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Commit | Line | Data |
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7c1a000d | 1 | // SPDX-License-Identifier: GPL-2.0 |
0a8165d7 | 2 | /* |
351df4b2 JK |
3 | * fs/f2fs/segment.c |
4 | * | |
5 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
6 | * http://www.samsung.com/ | |
351df4b2 JK |
7 | */ |
8 | #include <linux/fs.h> | |
9 | #include <linux/f2fs_fs.h> | |
10 | #include <linux/bio.h> | |
11 | #include <linux/blkdev.h> | |
690e4a3e | 12 | #include <linux/prefetch.h> |
6b4afdd7 | 13 | #include <linux/kthread.h> |
74de593a | 14 | #include <linux/swap.h> |
60b99b48 | 15 | #include <linux/timer.h> |
1d7be270 | 16 | #include <linux/freezer.h> |
1eb1ef4a | 17 | #include <linux/sched/signal.h> |
351df4b2 JK |
18 | |
19 | #include "f2fs.h" | |
20 | #include "segment.h" | |
21 | #include "node.h" | |
5f656541 | 22 | #include "gc.h" |
9e4ded3f | 23 | #include "trace.h" |
6ec178da | 24 | #include <trace/events/f2fs.h> |
351df4b2 | 25 | |
9a7f143a CL |
26 | #define __reverse_ffz(x) __reverse_ffs(~(x)) |
27 | ||
7fd9e544 | 28 | static struct kmem_cache *discard_entry_slab; |
b01a9201 | 29 | static struct kmem_cache *discard_cmd_slab; |
184a5cd2 | 30 | static struct kmem_cache *sit_entry_set_slab; |
88b88a66 | 31 | static struct kmem_cache *inmem_entry_slab; |
7fd9e544 | 32 | |
f96999c3 JK |
33 | static unsigned long __reverse_ulong(unsigned char *str) |
34 | { | |
35 | unsigned long tmp = 0; | |
36 | int shift = 24, idx = 0; | |
37 | ||
38 | #if BITS_PER_LONG == 64 | |
39 | shift = 56; | |
40 | #endif | |
41 | while (shift >= 0) { | |
42 | tmp |= (unsigned long)str[idx++] << shift; | |
43 | shift -= BITS_PER_BYTE; | |
44 | } | |
45 | return tmp; | |
46 | } | |
47 | ||
9a7f143a CL |
48 | /* |
49 | * __reverse_ffs is copied from include/asm-generic/bitops/__ffs.h since | |
50 | * MSB and LSB are reversed in a byte by f2fs_set_bit. | |
51 | */ | |
52 | static inline unsigned long __reverse_ffs(unsigned long word) | |
53 | { | |
54 | int num = 0; | |
55 | ||
56 | #if BITS_PER_LONG == 64 | |
f96999c3 | 57 | if ((word & 0xffffffff00000000UL) == 0) |
9a7f143a | 58 | num += 32; |
f96999c3 | 59 | else |
9a7f143a | 60 | word >>= 32; |
9a7f143a | 61 | #endif |
f96999c3 | 62 | if ((word & 0xffff0000) == 0) |
9a7f143a | 63 | num += 16; |
f96999c3 | 64 | else |
9a7f143a | 65 | word >>= 16; |
f96999c3 JK |
66 | |
67 | if ((word & 0xff00) == 0) | |
9a7f143a | 68 | num += 8; |
f96999c3 | 69 | else |
9a7f143a | 70 | word >>= 8; |
f96999c3 | 71 | |
9a7f143a CL |
72 | if ((word & 0xf0) == 0) |
73 | num += 4; | |
74 | else | |
75 | word >>= 4; | |
f96999c3 | 76 | |
9a7f143a CL |
77 | if ((word & 0xc) == 0) |
78 | num += 2; | |
79 | else | |
80 | word >>= 2; | |
f96999c3 | 81 | |
9a7f143a CL |
82 | if ((word & 0x2) == 0) |
83 | num += 1; | |
84 | return num; | |
85 | } | |
86 | ||
87 | /* | |
e1c42045 | 88 | * __find_rev_next(_zero)_bit is copied from lib/find_next_bit.c because |
9a7f143a | 89 | * f2fs_set_bit makes MSB and LSB reversed in a byte. |
692223d1 | 90 | * @size must be integral times of unsigned long. |
9a7f143a | 91 | * Example: |
f96999c3 JK |
92 | * MSB <--> LSB |
93 | * f2fs_set_bit(0, bitmap) => 1000 0000 | |
94 | * f2fs_set_bit(7, bitmap) => 0000 0001 | |
9a7f143a CL |
95 | */ |
96 | static unsigned long __find_rev_next_bit(const unsigned long *addr, | |
97 | unsigned long size, unsigned long offset) | |
98 | { | |
99 | const unsigned long *p = addr + BIT_WORD(offset); | |
692223d1 | 100 | unsigned long result = size; |
9a7f143a | 101 | unsigned long tmp; |
9a7f143a CL |
102 | |
103 | if (offset >= size) | |
104 | return size; | |
105 | ||
692223d1 | 106 | size -= (offset & ~(BITS_PER_LONG - 1)); |
9a7f143a | 107 | offset %= BITS_PER_LONG; |
f96999c3 | 108 | |
692223d1 FL |
109 | while (1) { |
110 | if (*p == 0) | |
111 | goto pass; | |
9a7f143a | 112 | |
f96999c3 | 113 | tmp = __reverse_ulong((unsigned char *)p); |
692223d1 FL |
114 | |
115 | tmp &= ~0UL >> offset; | |
116 | if (size < BITS_PER_LONG) | |
117 | tmp &= (~0UL << (BITS_PER_LONG - size)); | |
9a7f143a | 118 | if (tmp) |
692223d1 FL |
119 | goto found; |
120 | pass: | |
121 | if (size <= BITS_PER_LONG) | |
122 | break; | |
9a7f143a | 123 | size -= BITS_PER_LONG; |
692223d1 | 124 | offset = 0; |
f96999c3 | 125 | p++; |
9a7f143a | 126 | } |
692223d1 FL |
127 | return result; |
128 | found: | |
129 | return result - size + __reverse_ffs(tmp); | |
9a7f143a CL |
130 | } |
131 | ||
132 | static unsigned long __find_rev_next_zero_bit(const unsigned long *addr, | |
133 | unsigned long size, unsigned long offset) | |
134 | { | |
135 | const unsigned long *p = addr + BIT_WORD(offset); | |
80609448 | 136 | unsigned long result = size; |
9a7f143a | 137 | unsigned long tmp; |
9a7f143a CL |
138 | |
139 | if (offset >= size) | |
140 | return size; | |
141 | ||
80609448 | 142 | size -= (offset & ~(BITS_PER_LONG - 1)); |
9a7f143a | 143 | offset %= BITS_PER_LONG; |
80609448 JK |
144 | |
145 | while (1) { | |
146 | if (*p == ~0UL) | |
147 | goto pass; | |
148 | ||
f96999c3 | 149 | tmp = __reverse_ulong((unsigned char *)p); |
80609448 JK |
150 | |
151 | if (offset) | |
152 | tmp |= ~0UL << (BITS_PER_LONG - offset); | |
153 | if (size < BITS_PER_LONG) | |
154 | tmp |= ~0UL >> size; | |
f96999c3 | 155 | if (tmp != ~0UL) |
80609448 JK |
156 | goto found; |
157 | pass: | |
158 | if (size <= BITS_PER_LONG) | |
159 | break; | |
9a7f143a | 160 | size -= BITS_PER_LONG; |
80609448 | 161 | offset = 0; |
f96999c3 | 162 | p++; |
9a7f143a | 163 | } |
80609448 JK |
164 | return result; |
165 | found: | |
166 | return result - size + __reverse_ffz(tmp); | |
9a7f143a CL |
167 | } |
168 | ||
4d57b86d | 169 | bool f2fs_need_SSR(struct f2fs_sb_info *sbi) |
b3a97a2a JK |
170 | { |
171 | int node_secs = get_blocktype_secs(sbi, F2FS_DIRTY_NODES); | |
172 | int dent_secs = get_blocktype_secs(sbi, F2FS_DIRTY_DENTS); | |
173 | int imeta_secs = get_blocktype_secs(sbi, F2FS_DIRTY_IMETA); | |
174 | ||
175 | if (test_opt(sbi, LFS)) | |
176 | return false; | |
5b0e9539 | 177 | if (sbi->gc_mode == GC_URGENT) |
b3a97a2a | 178 | return true; |
4354994f DR |
179 | if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) |
180 | return true; | |
b3a97a2a JK |
181 | |
182 | return free_sections(sbi) <= (node_secs + 2 * dent_secs + imeta_secs + | |
a2a12b67 | 183 | SM_I(sbi)->min_ssr_sections + reserved_sections(sbi)); |
b3a97a2a JK |
184 | } |
185 | ||
4d57b86d | 186 | void f2fs_register_inmem_page(struct inode *inode, struct page *page) |
88b88a66 | 187 | { |
57864ae5 | 188 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
88b88a66 JK |
189 | struct f2fs_inode_info *fi = F2FS_I(inode); |
190 | struct inmem_pages *new; | |
9be32d72 | 191 | |
9e4ded3f | 192 | f2fs_trace_pid(page); |
0722b101 | 193 | |
240a5915 | 194 | f2fs_set_page_private(page, (unsigned long)ATOMIC_WRITTEN_PAGE); |
decd36b6 | 195 | |
88b88a66 JK |
196 | new = f2fs_kmem_cache_alloc(inmem_entry_slab, GFP_NOFS); |
197 | ||
198 | /* add atomic page indices to the list */ | |
199 | new->page = page; | |
200 | INIT_LIST_HEAD(&new->list); | |
decd36b6 | 201 | |
88b88a66 JK |
202 | /* increase reference count with clean state */ |
203 | mutex_lock(&fi->inmem_lock); | |
204 | get_page(page); | |
205 | list_add_tail(&new->list, &fi->inmem_pages); | |
57864ae5 JK |
206 | spin_lock(&sbi->inode_lock[ATOMIC_FILE]); |
207 | if (list_empty(&fi->inmem_ilist)) | |
208 | list_add_tail(&fi->inmem_ilist, &sbi->inode_list[ATOMIC_FILE]); | |
209 | spin_unlock(&sbi->inode_lock[ATOMIC_FILE]); | |
8dcf2ff7 | 210 | inc_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES); |
88b88a66 | 211 | mutex_unlock(&fi->inmem_lock); |
8ce67cb0 JK |
212 | |
213 | trace_f2fs_register_inmem_page(page, INMEM); | |
88b88a66 JK |
214 | } |
215 | ||
28bc106b | 216 | static int __revoke_inmem_pages(struct inode *inode, |
48432984 CY |
217 | struct list_head *head, bool drop, bool recover, |
218 | bool trylock) | |
29b96b54 | 219 | { |
28bc106b | 220 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
29b96b54 | 221 | struct inmem_pages *cur, *tmp; |
28bc106b | 222 | int err = 0; |
29b96b54 CY |
223 | |
224 | list_for_each_entry_safe(cur, tmp, head, list) { | |
28bc106b CY |
225 | struct page *page = cur->page; |
226 | ||
227 | if (drop) | |
228 | trace_f2fs_commit_inmem_page(page, INMEM_DROP); | |
229 | ||
48432984 CY |
230 | if (trylock) { |
231 | /* | |
232 | * to avoid deadlock in between page lock and | |
233 | * inmem_lock. | |
234 | */ | |
235 | if (!trylock_page(page)) | |
236 | continue; | |
237 | } else { | |
238 | lock_page(page); | |
239 | } | |
29b96b54 | 240 | |
bae0ee7a | 241 | f2fs_wait_on_page_writeback(page, DATA, true, true); |
e5e5732d | 242 | |
28bc106b CY |
243 | if (recover) { |
244 | struct dnode_of_data dn; | |
245 | struct node_info ni; | |
246 | ||
247 | trace_f2fs_commit_inmem_page(page, INMEM_REVOKE); | |
7f2b4e8e | 248 | retry: |
28bc106b | 249 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d CY |
250 | err = f2fs_get_dnode_of_data(&dn, page->index, |
251 | LOOKUP_NODE); | |
7f2b4e8e CY |
252 | if (err) { |
253 | if (err == -ENOMEM) { | |
254 | congestion_wait(BLK_RW_ASYNC, HZ/50); | |
255 | cond_resched(); | |
256 | goto retry; | |
257 | } | |
28bc106b CY |
258 | err = -EAGAIN; |
259 | goto next; | |
260 | } | |
7735730d CY |
261 | |
262 | err = f2fs_get_node_info(sbi, dn.nid, &ni); | |
263 | if (err) { | |
264 | f2fs_put_dnode(&dn); | |
265 | return err; | |
266 | } | |
267 | ||
f1d2564a | 268 | if (cur->old_addr == NEW_ADDR) { |
4d57b86d | 269 | f2fs_invalidate_blocks(sbi, dn.data_blkaddr); |
f1d2564a DJ |
270 | f2fs_update_data_blkaddr(&dn, NEW_ADDR); |
271 | } else | |
272 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, | |
28bc106b CY |
273 | cur->old_addr, ni.version, true, true); |
274 | f2fs_put_dnode(&dn); | |
275 | } | |
276 | next: | |
63c52d78 | 277 | /* we don't need to invalidate this in the sccessful status */ |
2baf0781 | 278 | if (drop || recover) { |
63c52d78 | 279 | ClearPageUptodate(page); |
2baf0781 CY |
280 | clear_cold_data(page); |
281 | } | |
240a5915 | 282 | f2fs_clear_page_private(page); |
28bc106b | 283 | f2fs_put_page(page, 1); |
29b96b54 CY |
284 | |
285 | list_del(&cur->list); | |
286 | kmem_cache_free(inmem_entry_slab, cur); | |
287 | dec_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES); | |
288 | } | |
28bc106b | 289 | return err; |
29b96b54 CY |
290 | } |
291 | ||
4d57b86d | 292 | void f2fs_drop_inmem_pages_all(struct f2fs_sb_info *sbi, bool gc_failure) |
57864ae5 JK |
293 | { |
294 | struct list_head *head = &sbi->inode_list[ATOMIC_FILE]; | |
295 | struct inode *inode; | |
296 | struct f2fs_inode_info *fi; | |
297 | next: | |
298 | spin_lock(&sbi->inode_lock[ATOMIC_FILE]); | |
299 | if (list_empty(head)) { | |
300 | spin_unlock(&sbi->inode_lock[ATOMIC_FILE]); | |
301 | return; | |
302 | } | |
303 | fi = list_first_entry(head, struct f2fs_inode_info, inmem_ilist); | |
304 | inode = igrab(&fi->vfs_inode); | |
305 | spin_unlock(&sbi->inode_lock[ATOMIC_FILE]); | |
306 | ||
307 | if (inode) { | |
2ef79ecb CY |
308 | if (gc_failure) { |
309 | if (fi->i_gc_failures[GC_FAILURE_ATOMIC]) | |
310 | goto drop; | |
311 | goto skip; | |
312 | } | |
313 | drop: | |
314 | set_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST); | |
4d57b86d | 315 | f2fs_drop_inmem_pages(inode); |
57864ae5 JK |
316 | iput(inode); |
317 | } | |
2ef79ecb | 318 | skip: |
57864ae5 JK |
319 | congestion_wait(BLK_RW_ASYNC, HZ/50); |
320 | cond_resched(); | |
321 | goto next; | |
322 | } | |
323 | ||
4d57b86d | 324 | void f2fs_drop_inmem_pages(struct inode *inode) |
29b96b54 | 325 | { |
57864ae5 | 326 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
29b96b54 CY |
327 | struct f2fs_inode_info *fi = F2FS_I(inode); |
328 | ||
48432984 CY |
329 | while (!list_empty(&fi->inmem_pages)) { |
330 | mutex_lock(&fi->inmem_lock); | |
331 | __revoke_inmem_pages(inode, &fi->inmem_pages, | |
332 | true, false, true); | |
333 | ||
334 | if (list_empty(&fi->inmem_pages)) { | |
335 | spin_lock(&sbi->inode_lock[ATOMIC_FILE]); | |
336 | if (!list_empty(&fi->inmem_ilist)) | |
337 | list_del_init(&fi->inmem_ilist); | |
338 | spin_unlock(&sbi->inode_lock[ATOMIC_FILE]); | |
339 | } | |
340 | mutex_unlock(&fi->inmem_lock); | |
341 | } | |
5fe45743 CY |
342 | |
343 | clear_inode_flag(inode, FI_ATOMIC_FILE); | |
2ef79ecb | 344 | fi->i_gc_failures[GC_FAILURE_ATOMIC] = 0; |
5fe45743 | 345 | stat_dec_atomic_write(inode); |
29b96b54 CY |
346 | } |
347 | ||
4d57b86d | 348 | void f2fs_drop_inmem_page(struct inode *inode, struct page *page) |
8c242db9 JK |
349 | { |
350 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
351 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
352 | struct list_head *head = &fi->inmem_pages; | |
353 | struct inmem_pages *cur = NULL; | |
354 | ||
355 | f2fs_bug_on(sbi, !IS_ATOMIC_WRITTEN_PAGE(page)); | |
356 | ||
357 | mutex_lock(&fi->inmem_lock); | |
358 | list_for_each_entry(cur, head, list) { | |
359 | if (cur->page == page) | |
360 | break; | |
361 | } | |
362 | ||
d0891e84 | 363 | f2fs_bug_on(sbi, list_empty(head) || cur->page != page); |
8c242db9 JK |
364 | list_del(&cur->list); |
365 | mutex_unlock(&fi->inmem_lock); | |
366 | ||
367 | dec_page_count(sbi, F2FS_INMEM_PAGES); | |
368 | kmem_cache_free(inmem_entry_slab, cur); | |
369 | ||
370 | ClearPageUptodate(page); | |
240a5915 | 371 | f2fs_clear_page_private(page); |
8c242db9 JK |
372 | f2fs_put_page(page, 0); |
373 | ||
374 | trace_f2fs_commit_inmem_page(page, INMEM_INVALIDATE); | |
375 | } | |
376 | ||
4d57b86d | 377 | static int __f2fs_commit_inmem_pages(struct inode *inode) |
88b88a66 JK |
378 | { |
379 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
380 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
381 | struct inmem_pages *cur, *tmp; | |
88b88a66 | 382 | struct f2fs_io_info fio = { |
05ca3632 | 383 | .sbi = sbi, |
39d787be | 384 | .ino = inode->i_ino, |
88b88a66 | 385 | .type = DATA, |
04d328de | 386 | .op = REQ_OP_WRITE, |
70fd7614 | 387 | .op_flags = REQ_SYNC | REQ_PRIO, |
b0af6d49 | 388 | .io_type = FS_DATA_IO, |
88b88a66 | 389 | }; |
cf52b27a | 390 | struct list_head revoke_list; |
bab475c5 | 391 | bool submit_bio = false; |
edb27dee | 392 | int err = 0; |
88b88a66 | 393 | |
cf52b27a CY |
394 | INIT_LIST_HEAD(&revoke_list); |
395 | ||
88b88a66 | 396 | list_for_each_entry_safe(cur, tmp, &fi->inmem_pages, list) { |
28bc106b CY |
397 | struct page *page = cur->page; |
398 | ||
399 | lock_page(page); | |
400 | if (page->mapping == inode->i_mapping) { | |
401 | trace_f2fs_commit_inmem_page(page, INMEM); | |
402 | ||
bae0ee7a | 403 | f2fs_wait_on_page_writeback(page, DATA, true, true); |
8d64d365 CY |
404 | |
405 | set_page_dirty(page); | |
933439c8 | 406 | if (clear_page_dirty_for_io(page)) { |
29b96b54 | 407 | inode_dec_dirty_pages(inode); |
4d57b86d | 408 | f2fs_remove_dirty_inode(inode); |
933439c8 | 409 | } |
640cc189 | 410 | retry: |
28bc106b | 411 | fio.page = page; |
e959c8f5 | 412 | fio.old_blkaddr = NULL_ADDR; |
4d978078 | 413 | fio.encrypted_page = NULL; |
cc15620b | 414 | fio.need_lock = LOCK_DONE; |
4d57b86d | 415 | err = f2fs_do_write_data_page(&fio); |
29b96b54 | 416 | if (err) { |
640cc189 JK |
417 | if (err == -ENOMEM) { |
418 | congestion_wait(BLK_RW_ASYNC, HZ/50); | |
419 | cond_resched(); | |
420 | goto retry; | |
421 | } | |
28bc106b | 422 | unlock_page(page); |
29b96b54 | 423 | break; |
70c640b1 | 424 | } |
28bc106b CY |
425 | /* record old blkaddr for revoking */ |
426 | cur->old_addr = fio.old_blkaddr; | |
bab475c5 | 427 | submit_bio = true; |
28bc106b CY |
428 | } |
429 | unlock_page(page); | |
cf52b27a | 430 | list_move_tail(&cur->list, &revoke_list); |
88b88a66 | 431 | } |
29b96b54 | 432 | |
bab475c5 CY |
433 | if (submit_bio) |
434 | f2fs_submit_merged_write_cond(sbi, inode, NULL, 0, DATA); | |
28bc106b | 435 | |
cf52b27a CY |
436 | if (err) { |
437 | /* | |
438 | * try to revoke all committed pages, but still we could fail | |
439 | * due to no memory or other reason, if that happened, EAGAIN | |
440 | * will be returned, which means in such case, transaction is | |
441 | * already not integrity, caller should use journal to do the | |
442 | * recovery or rewrite & commit last transaction. For other | |
443 | * error number, revoking was done by filesystem itself. | |
444 | */ | |
48432984 CY |
445 | err = __revoke_inmem_pages(inode, &revoke_list, |
446 | false, true, false); | |
cf52b27a CY |
447 | |
448 | /* drop all uncommitted pages */ | |
48432984 CY |
449 | __revoke_inmem_pages(inode, &fi->inmem_pages, |
450 | true, false, false); | |
cf52b27a | 451 | } else { |
48432984 CY |
452 | __revoke_inmem_pages(inode, &revoke_list, |
453 | false, false, false); | |
cf52b27a | 454 | } |
28bc106b | 455 | |
29b96b54 CY |
456 | return err; |
457 | } | |
458 | ||
4d57b86d | 459 | int f2fs_commit_inmem_pages(struct inode *inode) |
29b96b54 CY |
460 | { |
461 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
462 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
28bc106b | 463 | int err; |
29b96b54 CY |
464 | |
465 | f2fs_balance_fs(sbi, true); | |
29b96b54 | 466 | |
6f8d4455 JK |
467 | down_write(&fi->i_gc_rwsem[WRITE]); |
468 | ||
469 | f2fs_lock_op(sbi); | |
5fe45743 CY |
470 | set_inode_flag(inode, FI_ATOMIC_COMMIT); |
471 | ||
29b96b54 | 472 | mutex_lock(&fi->inmem_lock); |
4d57b86d | 473 | err = __f2fs_commit_inmem_pages(inode); |
28bc106b | 474 | |
57864ae5 JK |
475 | spin_lock(&sbi->inode_lock[ATOMIC_FILE]); |
476 | if (!list_empty(&fi->inmem_ilist)) | |
477 | list_del_init(&fi->inmem_ilist); | |
478 | spin_unlock(&sbi->inode_lock[ATOMIC_FILE]); | |
88b88a66 JK |
479 | mutex_unlock(&fi->inmem_lock); |
480 | ||
5fe45743 CY |
481 | clear_inode_flag(inode, FI_ATOMIC_COMMIT); |
482 | ||
29b96b54 | 483 | f2fs_unlock_op(sbi); |
6f8d4455 JK |
484 | up_write(&fi->i_gc_rwsem[WRITE]); |
485 | ||
edb27dee | 486 | return err; |
88b88a66 JK |
487 | } |
488 | ||
0a8165d7 | 489 | /* |
351df4b2 JK |
490 | * This function balances dirty node and dentry pages. |
491 | * In addition, it controls garbage collection. | |
492 | */ | |
2c4db1a6 | 493 | void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need) |
351df4b2 | 494 | { |
55523519 CY |
495 | if (time_to_inject(sbi, FAULT_CHECKPOINT)) { |
496 | f2fs_show_injection_info(FAULT_CHECKPOINT); | |
0f348028 | 497 | f2fs_stop_checkpoint(sbi, false); |
55523519 | 498 | } |
0f348028 | 499 | |
e589c2c4 | 500 | /* balance_fs_bg is able to be pending */ |
a7881893 | 501 | if (need && excess_cached_nats(sbi)) |
e589c2c4 JK |
502 | f2fs_balance_fs_bg(sbi); |
503 | ||
4354994f DR |
504 | if (f2fs_is_checkpoint_ready(sbi)) |
505 | return; | |
506 | ||
351df4b2 | 507 | /* |
029cd28c JK |
508 | * We should do GC or end up with checkpoint, if there are so many dirty |
509 | * dir/node pages without enough free segments. | |
351df4b2 | 510 | */ |
7f3037a5 | 511 | if (has_not_enough_free_secs(sbi, 0, 0)) { |
351df4b2 | 512 | mutex_lock(&sbi->gc_mutex); |
e066b83c | 513 | f2fs_gc(sbi, false, false, NULL_SEGNO); |
351df4b2 JK |
514 | } |
515 | } | |
516 | ||
4660f9c0 JK |
517 | void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi) |
518 | { | |
64c74a7a CY |
519 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
520 | return; | |
521 | ||
1dcc336b | 522 | /* try to shrink extent cache when there is no enough memory */ |
4d57b86d | 523 | if (!f2fs_available_free_memory(sbi, EXTENT_CACHE)) |
554df79e | 524 | f2fs_shrink_extent_tree(sbi, EXTENT_CACHE_SHRINK_NUMBER); |
1dcc336b | 525 | |
1b38dc8e | 526 | /* check the # of cached NAT entries */ |
4d57b86d CY |
527 | if (!f2fs_available_free_memory(sbi, NAT_ENTRIES)) |
528 | f2fs_try_to_free_nats(sbi, NAT_ENTRY_PER_BLOCK); | |
1b38dc8e | 529 | |
4d57b86d CY |
530 | if (!f2fs_available_free_memory(sbi, FREE_NIDS)) |
531 | f2fs_try_to_free_nids(sbi, MAX_FREE_NIDS); | |
ad4edb83 | 532 | else |
4d57b86d | 533 | f2fs_build_free_nids(sbi, false, false); |
31696580 | 534 | |
a7d10cf3 | 535 | if (!is_idle(sbi, REQ_TIME) && |
fd8c8caf | 536 | (!excess_dirty_nats(sbi) && !excess_dirty_nodes(sbi))) |
f455c8a5 | 537 | return; |
31696580 | 538 | |
1b38dc8e | 539 | /* checkpoint is the only way to shrink partial cached entries */ |
4d57b86d CY |
540 | if (!f2fs_available_free_memory(sbi, NAT_ENTRIES) || |
541 | !f2fs_available_free_memory(sbi, INO_ENTRIES) || | |
7d768d2c CY |
542 | excess_prefree_segs(sbi) || |
543 | excess_dirty_nats(sbi) || | |
fd8c8caf | 544 | excess_dirty_nodes(sbi) || |
f455c8a5 | 545 | f2fs_time_over(sbi, CP_TIME)) { |
e9f5b8b8 CY |
546 | if (test_opt(sbi, DATA_FLUSH)) { |
547 | struct blk_plug plug; | |
548 | ||
549 | blk_start_plug(&plug); | |
4d57b86d | 550 | f2fs_sync_dirty_inodes(sbi, FILE_INODE); |
e9f5b8b8 CY |
551 | blk_finish_plug(&plug); |
552 | } | |
4660f9c0 | 553 | f2fs_sync_fs(sbi->sb, true); |
42190d2a | 554 | stat_inc_bg_cp_count(sbi->stat_info); |
36b35a0d | 555 | } |
4660f9c0 JK |
556 | } |
557 | ||
20fda56b KM |
558 | static int __submit_flush_wait(struct f2fs_sb_info *sbi, |
559 | struct block_device *bdev) | |
3c62be17 | 560 | { |
dc37910d | 561 | struct bio *bio; |
3c62be17 JK |
562 | int ret; |
563 | ||
dc37910d CY |
564 | bio = f2fs_bio_alloc(sbi, 0, false); |
565 | if (!bio) | |
566 | return -ENOMEM; | |
567 | ||
3adc5fcb | 568 | bio->bi_opf = REQ_OP_WRITE | REQ_SYNC | REQ_PREFLUSH; |
74d46992 | 569 | bio_set_dev(bio, bdev); |
3c62be17 JK |
570 | ret = submit_bio_wait(bio); |
571 | bio_put(bio); | |
20fda56b KM |
572 | |
573 | trace_f2fs_issue_flush(bdev, test_opt(sbi, NOBARRIER), | |
574 | test_opt(sbi, FLUSH_MERGE), ret); | |
3c62be17 JK |
575 | return ret; |
576 | } | |
577 | ||
39d787be | 578 | static int submit_flush_wait(struct f2fs_sb_info *sbi, nid_t ino) |
3c62be17 | 579 | { |
39d787be | 580 | int ret = 0; |
3c62be17 JK |
581 | int i; |
582 | ||
0916878d | 583 | if (!f2fs_is_multi_device(sbi)) |
39d787be | 584 | return __submit_flush_wait(sbi, sbi->sb->s_bdev); |
20fda56b | 585 | |
39d787be | 586 | for (i = 0; i < sbi->s_ndevs; i++) { |
4d57b86d | 587 | if (!f2fs_is_dirty_device(sbi, ino, i, FLUSH_INO)) |
39d787be | 588 | continue; |
20fda56b KM |
589 | ret = __submit_flush_wait(sbi, FDEV(i).bdev); |
590 | if (ret) | |
591 | break; | |
3c62be17 JK |
592 | } |
593 | return ret; | |
594 | } | |
595 | ||
2163d198 | 596 | static int issue_flush_thread(void *data) |
6b4afdd7 JK |
597 | { |
598 | struct f2fs_sb_info *sbi = data; | |
b01a9201 | 599 | struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info; |
a688b9d9 | 600 | wait_queue_head_t *q = &fcc->flush_wait_queue; |
6b4afdd7 JK |
601 | repeat: |
602 | if (kthread_should_stop()) | |
603 | return 0; | |
604 | ||
dc6febb6 CY |
605 | sb_start_intwrite(sbi->sb); |
606 | ||
721bd4d5 | 607 | if (!llist_empty(&fcc->issue_list)) { |
6b4afdd7 JK |
608 | struct flush_cmd *cmd, *next; |
609 | int ret; | |
610 | ||
721bd4d5 GZ |
611 | fcc->dispatch_list = llist_del_all(&fcc->issue_list); |
612 | fcc->dispatch_list = llist_reverse_order(fcc->dispatch_list); | |
613 | ||
39d787be CY |
614 | cmd = llist_entry(fcc->dispatch_list, struct flush_cmd, llnode); |
615 | ||
616 | ret = submit_flush_wait(sbi, cmd->ino); | |
8b8dd65f CY |
617 | atomic_inc(&fcc->issued_flush); |
618 | ||
721bd4d5 GZ |
619 | llist_for_each_entry_safe(cmd, next, |
620 | fcc->dispatch_list, llnode) { | |
6b4afdd7 | 621 | cmd->ret = ret; |
6b4afdd7 JK |
622 | complete(&cmd->wait); |
623 | } | |
a688b9d9 | 624 | fcc->dispatch_list = NULL; |
6b4afdd7 JK |
625 | } |
626 | ||
dc6febb6 CY |
627 | sb_end_intwrite(sbi->sb); |
628 | ||
a688b9d9 | 629 | wait_event_interruptible(*q, |
721bd4d5 | 630 | kthread_should_stop() || !llist_empty(&fcc->issue_list)); |
6b4afdd7 JK |
631 | goto repeat; |
632 | } | |
633 | ||
39d787be | 634 | int f2fs_issue_flush(struct f2fs_sb_info *sbi, nid_t ino) |
6b4afdd7 | 635 | { |
b01a9201 | 636 | struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info; |
adf8d90b | 637 | struct flush_cmd cmd; |
8b8dd65f | 638 | int ret; |
6b4afdd7 | 639 | |
0f7b2abd JK |
640 | if (test_opt(sbi, NOBARRIER)) |
641 | return 0; | |
642 | ||
8b8dd65f | 643 | if (!test_opt(sbi, FLUSH_MERGE)) { |
72691af6 | 644 | atomic_inc(&fcc->queued_flush); |
39d787be | 645 | ret = submit_flush_wait(sbi, ino); |
72691af6 | 646 | atomic_dec(&fcc->queued_flush); |
8b8dd65f CY |
647 | atomic_inc(&fcc->issued_flush); |
648 | return ret; | |
649 | } | |
740432f8 | 650 | |
0916878d DLM |
651 | if (atomic_inc_return(&fcc->queued_flush) == 1 || |
652 | f2fs_is_multi_device(sbi)) { | |
39d787be | 653 | ret = submit_flush_wait(sbi, ino); |
72691af6 | 654 | atomic_dec(&fcc->queued_flush); |
8b8dd65f CY |
655 | |
656 | atomic_inc(&fcc->issued_flush); | |
740432f8 JK |
657 | return ret; |
658 | } | |
6b4afdd7 | 659 | |
39d787be | 660 | cmd.ino = ino; |
adf8d90b | 661 | init_completion(&cmd.wait); |
6b4afdd7 | 662 | |
721bd4d5 | 663 | llist_add(&cmd.llnode, &fcc->issue_list); |
6b4afdd7 | 664 | |
6f890df0 CY |
665 | /* update issue_list before we wake up issue_flush thread */ |
666 | smp_mb(); | |
667 | ||
668 | if (waitqueue_active(&fcc->flush_wait_queue)) | |
a688b9d9 | 669 | wake_up(&fcc->flush_wait_queue); |
6b4afdd7 | 670 | |
5eba8c5d JK |
671 | if (fcc->f2fs_issue_flush) { |
672 | wait_for_completion(&cmd.wait); | |
72691af6 | 673 | atomic_dec(&fcc->queued_flush); |
5eba8c5d | 674 | } else { |
d3238691 CY |
675 | struct llist_node *list; |
676 | ||
677 | list = llist_del_all(&fcc->issue_list); | |
678 | if (!list) { | |
679 | wait_for_completion(&cmd.wait); | |
72691af6 | 680 | atomic_dec(&fcc->queued_flush); |
d3238691 CY |
681 | } else { |
682 | struct flush_cmd *tmp, *next; | |
683 | ||
39d787be | 684 | ret = submit_flush_wait(sbi, ino); |
d3238691 CY |
685 | |
686 | llist_for_each_entry_safe(tmp, next, list, llnode) { | |
687 | if (tmp == &cmd) { | |
688 | cmd.ret = ret; | |
72691af6 | 689 | atomic_dec(&fcc->queued_flush); |
d3238691 CY |
690 | continue; |
691 | } | |
692 | tmp->ret = ret; | |
693 | complete(&tmp->wait); | |
694 | } | |
695 | } | |
5eba8c5d | 696 | } |
adf8d90b CY |
697 | |
698 | return cmd.ret; | |
6b4afdd7 JK |
699 | } |
700 | ||
4d57b86d | 701 | int f2fs_create_flush_cmd_control(struct f2fs_sb_info *sbi) |
2163d198 GZ |
702 | { |
703 | dev_t dev = sbi->sb->s_bdev->bd_dev; | |
704 | struct flush_cmd_control *fcc; | |
705 | int err = 0; | |
706 | ||
b01a9201 JK |
707 | if (SM_I(sbi)->fcc_info) { |
708 | fcc = SM_I(sbi)->fcc_info; | |
d871cd04 YS |
709 | if (fcc->f2fs_issue_flush) |
710 | return err; | |
5eba8c5d JK |
711 | goto init_thread; |
712 | } | |
713 | ||
acbf054d | 714 | fcc = f2fs_kzalloc(sbi, sizeof(struct flush_cmd_control), GFP_KERNEL); |
2163d198 GZ |
715 | if (!fcc) |
716 | return -ENOMEM; | |
8b8dd65f | 717 | atomic_set(&fcc->issued_flush, 0); |
72691af6 | 718 | atomic_set(&fcc->queued_flush, 0); |
2163d198 | 719 | init_waitqueue_head(&fcc->flush_wait_queue); |
721bd4d5 | 720 | init_llist_head(&fcc->issue_list); |
b01a9201 | 721 | SM_I(sbi)->fcc_info = fcc; |
d4fdf8ba YH |
722 | if (!test_opt(sbi, FLUSH_MERGE)) |
723 | return err; | |
724 | ||
5eba8c5d | 725 | init_thread: |
2163d198 GZ |
726 | fcc->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi, |
727 | "f2fs_flush-%u:%u", MAJOR(dev), MINOR(dev)); | |
728 | if (IS_ERR(fcc->f2fs_issue_flush)) { | |
729 | err = PTR_ERR(fcc->f2fs_issue_flush); | |
5222595d | 730 | kvfree(fcc); |
b01a9201 | 731 | SM_I(sbi)->fcc_info = NULL; |
2163d198 GZ |
732 | return err; |
733 | } | |
2163d198 GZ |
734 | |
735 | return err; | |
736 | } | |
737 | ||
4d57b86d | 738 | void f2fs_destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free) |
2163d198 | 739 | { |
b01a9201 | 740 | struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info; |
2163d198 | 741 | |
5eba8c5d JK |
742 | if (fcc && fcc->f2fs_issue_flush) { |
743 | struct task_struct *flush_thread = fcc->f2fs_issue_flush; | |
744 | ||
745 | fcc->f2fs_issue_flush = NULL; | |
746 | kthread_stop(flush_thread); | |
747 | } | |
748 | if (free) { | |
5222595d | 749 | kvfree(fcc); |
b01a9201 | 750 | SM_I(sbi)->fcc_info = NULL; |
5eba8c5d | 751 | } |
2163d198 GZ |
752 | } |
753 | ||
1228b482 CY |
754 | int f2fs_flush_device_cache(struct f2fs_sb_info *sbi) |
755 | { | |
756 | int ret = 0, i; | |
757 | ||
0916878d | 758 | if (!f2fs_is_multi_device(sbi)) |
1228b482 CY |
759 | return 0; |
760 | ||
761 | for (i = 1; i < sbi->s_ndevs; i++) { | |
762 | if (!f2fs_test_bit(i, (char *)&sbi->dirty_device)) | |
763 | continue; | |
764 | ret = __submit_flush_wait(sbi, FDEV(i).bdev); | |
765 | if (ret) | |
766 | break; | |
767 | ||
768 | spin_lock(&sbi->dev_lock); | |
769 | f2fs_clear_bit(i, (char *)&sbi->dirty_device); | |
770 | spin_unlock(&sbi->dev_lock); | |
771 | } | |
772 | ||
773 | return ret; | |
774 | } | |
775 | ||
351df4b2 JK |
776 | static void __locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno, |
777 | enum dirty_type dirty_type) | |
778 | { | |
779 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
780 | ||
781 | /* need not be added */ | |
782 | if (IS_CURSEG(sbi, segno)) | |
783 | return; | |
784 | ||
785 | if (!test_and_set_bit(segno, dirty_i->dirty_segmap[dirty_type])) | |
786 | dirty_i->nr_dirty[dirty_type]++; | |
787 | ||
788 | if (dirty_type == DIRTY) { | |
789 | struct seg_entry *sentry = get_seg_entry(sbi, segno); | |
4625d6aa | 790 | enum dirty_type t = sentry->type; |
b2f2c390 | 791 | |
ec325b52 JK |
792 | if (unlikely(t >= DIRTY)) { |
793 | f2fs_bug_on(sbi, 1); | |
794 | return; | |
795 | } | |
4625d6aa CL |
796 | if (!test_and_set_bit(segno, dirty_i->dirty_segmap[t])) |
797 | dirty_i->nr_dirty[t]++; | |
351df4b2 JK |
798 | } |
799 | } | |
800 | ||
801 | static void __remove_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno, | |
802 | enum dirty_type dirty_type) | |
803 | { | |
804 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
805 | ||
806 | if (test_and_clear_bit(segno, dirty_i->dirty_segmap[dirty_type])) | |
807 | dirty_i->nr_dirty[dirty_type]--; | |
808 | ||
809 | if (dirty_type == DIRTY) { | |
4625d6aa CL |
810 | struct seg_entry *sentry = get_seg_entry(sbi, segno); |
811 | enum dirty_type t = sentry->type; | |
812 | ||
813 | if (test_and_clear_bit(segno, dirty_i->dirty_segmap[t])) | |
814 | dirty_i->nr_dirty[t]--; | |
b2f2c390 | 815 | |
302bd348 | 816 | if (get_valid_blocks(sbi, segno, true) == 0) |
4ddb1a4d | 817 | clear_bit(GET_SEC_FROM_SEG(sbi, segno), |
5ec4e49f | 818 | dirty_i->victim_secmap); |
351df4b2 JK |
819 | } |
820 | } | |
821 | ||
0a8165d7 | 822 | /* |
351df4b2 JK |
823 | * Should not occur error such as -ENOMEM. |
824 | * Adding dirty entry into seglist is not critical operation. | |
825 | * If a given segment is one of current working segments, it won't be added. | |
826 | */ | |
8d8451af | 827 | static void locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno) |
351df4b2 JK |
828 | { |
829 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
4354994f | 830 | unsigned short valid_blocks, ckpt_valid_blocks; |
351df4b2 JK |
831 | |
832 | if (segno == NULL_SEGNO || IS_CURSEG(sbi, segno)) | |
833 | return; | |
834 | ||
835 | mutex_lock(&dirty_i->seglist_lock); | |
836 | ||
302bd348 | 837 | valid_blocks = get_valid_blocks(sbi, segno, false); |
4354994f | 838 | ckpt_valid_blocks = get_ckpt_valid_blocks(sbi, segno); |
351df4b2 | 839 | |
4354994f DR |
840 | if (valid_blocks == 0 && (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) || |
841 | ckpt_valid_blocks == sbi->blocks_per_seg)) { | |
351df4b2 JK |
842 | __locate_dirty_segment(sbi, segno, PRE); |
843 | __remove_dirty_segment(sbi, segno, DIRTY); | |
844 | } else if (valid_blocks < sbi->blocks_per_seg) { | |
845 | __locate_dirty_segment(sbi, segno, DIRTY); | |
846 | } else { | |
847 | /* Recovery routine with SSR needs this */ | |
848 | __remove_dirty_segment(sbi, segno, DIRTY); | |
849 | } | |
850 | ||
851 | mutex_unlock(&dirty_i->seglist_lock); | |
351df4b2 JK |
852 | } |
853 | ||
4354994f DR |
854 | /* This moves currently empty dirty blocks to prefree. Must hold seglist_lock */ |
855 | void f2fs_dirty_to_prefree(struct f2fs_sb_info *sbi) | |
856 | { | |
857 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
858 | unsigned int segno; | |
859 | ||
860 | mutex_lock(&dirty_i->seglist_lock); | |
861 | for_each_set_bit(segno, dirty_i->dirty_segmap[DIRTY], MAIN_SEGS(sbi)) { | |
862 | if (get_valid_blocks(sbi, segno, false)) | |
863 | continue; | |
864 | if (IS_CURSEG(sbi, segno)) | |
865 | continue; | |
866 | __locate_dirty_segment(sbi, segno, PRE); | |
867 | __remove_dirty_segment(sbi, segno, DIRTY); | |
868 | } | |
869 | mutex_unlock(&dirty_i->seglist_lock); | |
870 | } | |
871 | ||
872 | int f2fs_disable_cp_again(struct f2fs_sb_info *sbi) | |
873 | { | |
874 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
875 | block_t ovp = overprovision_segments(sbi) << sbi->log_blocks_per_seg; | |
876 | block_t holes[2] = {0, 0}; /* DATA and NODE */ | |
877 | struct seg_entry *se; | |
878 | unsigned int segno; | |
879 | ||
880 | mutex_lock(&dirty_i->seglist_lock); | |
881 | for_each_set_bit(segno, dirty_i->dirty_segmap[DIRTY], MAIN_SEGS(sbi)) { | |
882 | se = get_seg_entry(sbi, segno); | |
883 | if (IS_NODESEG(se->type)) | |
884 | holes[NODE] += sbi->blocks_per_seg - se->valid_blocks; | |
885 | else | |
886 | holes[DATA] += sbi->blocks_per_seg - se->valid_blocks; | |
887 | } | |
888 | mutex_unlock(&dirty_i->seglist_lock); | |
889 | ||
890 | if (holes[DATA] > ovp || holes[NODE] > ovp) | |
891 | return -EAGAIN; | |
db610a64 JK |
892 | if (is_sbi_flag_set(sbi, SBI_CP_DISABLED_QUICK) && |
893 | dirty_segments(sbi) > overprovision_segments(sbi)) | |
894 | return -EAGAIN; | |
4354994f DR |
895 | return 0; |
896 | } | |
897 | ||
898 | /* This is only used by SBI_CP_DISABLED */ | |
899 | static unsigned int get_free_segment(struct f2fs_sb_info *sbi) | |
900 | { | |
901 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
902 | unsigned int segno = 0; | |
903 | ||
904 | mutex_lock(&dirty_i->seglist_lock); | |
905 | for_each_set_bit(segno, dirty_i->dirty_segmap[DIRTY], MAIN_SEGS(sbi)) { | |
906 | if (get_valid_blocks(sbi, segno, false)) | |
907 | continue; | |
908 | if (get_ckpt_valid_blocks(sbi, segno)) | |
909 | continue; | |
910 | mutex_unlock(&dirty_i->seglist_lock); | |
911 | return segno; | |
912 | } | |
913 | mutex_unlock(&dirty_i->seglist_lock); | |
914 | return NULL_SEGNO; | |
915 | } | |
916 | ||
004b6862 | 917 | static struct discard_cmd *__create_discard_cmd(struct f2fs_sb_info *sbi, |
c81abe34 JK |
918 | struct block_device *bdev, block_t lstart, |
919 | block_t start, block_t len) | |
275b66b0 | 920 | { |
0b54fb84 | 921 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
ba48a33e | 922 | struct list_head *pend_list; |
b01a9201 | 923 | struct discard_cmd *dc; |
275b66b0 | 924 | |
ba48a33e CY |
925 | f2fs_bug_on(sbi, !len); |
926 | ||
927 | pend_list = &dcc->pend_list[plist_idx(len)]; | |
928 | ||
b01a9201 JK |
929 | dc = f2fs_kmem_cache_alloc(discard_cmd_slab, GFP_NOFS); |
930 | INIT_LIST_HEAD(&dc->list); | |
c81abe34 | 931 | dc->bdev = bdev; |
b01a9201 | 932 | dc->lstart = lstart; |
c81abe34 | 933 | dc->start = start; |
b01a9201 | 934 | dc->len = len; |
ec9895ad | 935 | dc->ref = 0; |
15469963 | 936 | dc->state = D_PREP; |
72691af6 | 937 | dc->queued = 0; |
c81abe34 | 938 | dc->error = 0; |
b01a9201 | 939 | init_completion(&dc->wait); |
22d375dd | 940 | list_add_tail(&dc->list, pend_list); |
35ec7d57 CY |
941 | spin_lock_init(&dc->lock); |
942 | dc->bio_ref = 0; | |
5f32366a | 943 | atomic_inc(&dcc->discard_cmd_cnt); |
d84d1cbd | 944 | dcc->undiscard_blks += len; |
004b6862 CY |
945 | |
946 | return dc; | |
947 | } | |
948 | ||
949 | static struct discard_cmd *__attach_discard_cmd(struct f2fs_sb_info *sbi, | |
950 | struct block_device *bdev, block_t lstart, | |
951 | block_t start, block_t len, | |
4dada3fd CY |
952 | struct rb_node *parent, struct rb_node **p, |
953 | bool leftmost) | |
004b6862 CY |
954 | { |
955 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
956 | struct discard_cmd *dc; | |
957 | ||
958 | dc = __create_discard_cmd(sbi, bdev, lstart, start, len); | |
959 | ||
960 | rb_link_node(&dc->rb_node, parent, p); | |
4dada3fd | 961 | rb_insert_color_cached(&dc->rb_node, &dcc->root, leftmost); |
004b6862 CY |
962 | |
963 | return dc; | |
15469963 JK |
964 | } |
965 | ||
004b6862 CY |
966 | static void __detach_discard_cmd(struct discard_cmd_control *dcc, |
967 | struct discard_cmd *dc) | |
15469963 | 968 | { |
dcc9165d | 969 | if (dc->state == D_DONE) |
72691af6 | 970 | atomic_sub(dc->queued, &dcc->queued_discard); |
004b6862 CY |
971 | |
972 | list_del(&dc->list); | |
4dada3fd | 973 | rb_erase_cached(&dc->rb_node, &dcc->root); |
d84d1cbd | 974 | dcc->undiscard_blks -= dc->len; |
004b6862 CY |
975 | |
976 | kmem_cache_free(discard_cmd_slab, dc); | |
977 | ||
978 | atomic_dec(&dcc->discard_cmd_cnt); | |
979 | } | |
980 | ||
981 | static void __remove_discard_cmd(struct f2fs_sb_info *sbi, | |
982 | struct discard_cmd *dc) | |
983 | { | |
984 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
35ec7d57 | 985 | unsigned long flags; |
dcc9165d | 986 | |
2ec6f2ef CY |
987 | trace_f2fs_remove_discard(dc->bdev, dc->start, dc->len); |
988 | ||
35ec7d57 CY |
989 | spin_lock_irqsave(&dc->lock, flags); |
990 | if (dc->bio_ref) { | |
991 | spin_unlock_irqrestore(&dc->lock, flags); | |
992 | return; | |
993 | } | |
994 | spin_unlock_irqrestore(&dc->lock, flags); | |
995 | ||
d9703d90 CY |
996 | f2fs_bug_on(sbi, dc->ref); |
997 | ||
c81abe34 JK |
998 | if (dc->error == -EOPNOTSUPP) |
999 | dc->error = 0; | |
15469963 | 1000 | |
c81abe34 | 1001 | if (dc->error) |
22d7ea13 CY |
1002 | printk_ratelimited( |
1003 | "%sF2FS-fs: Issue discard(%u, %u, %u) failed, ret: %d", | |
1004 | KERN_INFO, dc->lstart, dc->start, dc->len, dc->error); | |
004b6862 | 1005 | __detach_discard_cmd(dcc, dc); |
275b66b0 CY |
1006 | } |
1007 | ||
c81abe34 JK |
1008 | static void f2fs_submit_discard_endio(struct bio *bio) |
1009 | { | |
1010 | struct discard_cmd *dc = (struct discard_cmd *)bio->bi_private; | |
35ec7d57 | 1011 | unsigned long flags; |
c81abe34 | 1012 | |
4e4cbee9 | 1013 | dc->error = blk_status_to_errno(bio->bi_status); |
35ec7d57 CY |
1014 | |
1015 | spin_lock_irqsave(&dc->lock, flags); | |
1016 | dc->bio_ref--; | |
1017 | if (!dc->bio_ref && dc->state == D_SUBMIT) { | |
1018 | dc->state = D_DONE; | |
1019 | complete_all(&dc->wait); | |
1020 | } | |
1021 | spin_unlock_irqrestore(&dc->lock, flags); | |
c81abe34 JK |
1022 | bio_put(bio); |
1023 | } | |
1024 | ||
94b1e10e | 1025 | static void __check_sit_bitmap(struct f2fs_sb_info *sbi, |
6915ea9d CY |
1026 | block_t start, block_t end) |
1027 | { | |
1028 | #ifdef CONFIG_F2FS_CHECK_FS | |
1029 | struct seg_entry *sentry; | |
1030 | unsigned int segno; | |
1031 | block_t blk = start; | |
1032 | unsigned long offset, size, max_blocks = sbi->blocks_per_seg; | |
1033 | unsigned long *map; | |
1034 | ||
1035 | while (blk < end) { | |
1036 | segno = GET_SEGNO(sbi, blk); | |
1037 | sentry = get_seg_entry(sbi, segno); | |
1038 | offset = GET_BLKOFF_FROM_SEG0(sbi, blk); | |
1039 | ||
008396e1 YS |
1040 | if (end < START_BLOCK(sbi, segno + 1)) |
1041 | size = GET_BLKOFF_FROM_SEG0(sbi, end); | |
1042 | else | |
1043 | size = max_blocks; | |
6915ea9d CY |
1044 | map = (unsigned long *)(sentry->cur_valid_map); |
1045 | offset = __find_rev_next_bit(map, size, offset); | |
1046 | f2fs_bug_on(sbi, offset != size); | |
008396e1 | 1047 | blk = START_BLOCK(sbi, segno + 1); |
6915ea9d CY |
1048 | } |
1049 | #endif | |
1050 | } | |
1051 | ||
8bb4f253 JK |
1052 | static void __init_discard_policy(struct f2fs_sb_info *sbi, |
1053 | struct discard_policy *dpolicy, | |
1054 | int discard_type, unsigned int granularity) | |
1055 | { | |
1056 | /* common policy */ | |
1057 | dpolicy->type = discard_type; | |
1058 | dpolicy->sync = true; | |
20ee4382 | 1059 | dpolicy->ordered = false; |
8bb4f253 JK |
1060 | dpolicy->granularity = granularity; |
1061 | ||
1062 | dpolicy->max_requests = DEF_MAX_DISCARD_REQUEST; | |
1063 | dpolicy->io_aware_gran = MAX_PLIST_NUM; | |
03f2c02d | 1064 | dpolicy->timeout = 0; |
8bb4f253 JK |
1065 | |
1066 | if (discard_type == DPOLICY_BG) { | |
1067 | dpolicy->min_interval = DEF_MIN_DISCARD_ISSUE_TIME; | |
f9d1dced | 1068 | dpolicy->mid_interval = DEF_MID_DISCARD_ISSUE_TIME; |
8bb4f253 JK |
1069 | dpolicy->max_interval = DEF_MAX_DISCARD_ISSUE_TIME; |
1070 | dpolicy->io_aware = true; | |
cba60849 | 1071 | dpolicy->sync = false; |
20ee4382 | 1072 | dpolicy->ordered = true; |
8bb4f253 JK |
1073 | if (utilization(sbi) > DEF_DISCARD_URGENT_UTIL) { |
1074 | dpolicy->granularity = 1; | |
1075 | dpolicy->max_interval = DEF_MIN_DISCARD_ISSUE_TIME; | |
1076 | } | |
1077 | } else if (discard_type == DPOLICY_FORCE) { | |
1078 | dpolicy->min_interval = DEF_MIN_DISCARD_ISSUE_TIME; | |
f9d1dced | 1079 | dpolicy->mid_interval = DEF_MID_DISCARD_ISSUE_TIME; |
8bb4f253 JK |
1080 | dpolicy->max_interval = DEF_MAX_DISCARD_ISSUE_TIME; |
1081 | dpolicy->io_aware = false; | |
1082 | } else if (discard_type == DPOLICY_FSTRIM) { | |
1083 | dpolicy->io_aware = false; | |
1084 | } else if (discard_type == DPOLICY_UMOUNT) { | |
241b493d | 1085 | dpolicy->max_requests = UINT_MAX; |
8bb4f253 | 1086 | dpolicy->io_aware = false; |
b8623253 JK |
1087 | /* we need to issue all to keep CP_TRIMMED_FLAG */ |
1088 | dpolicy->granularity = 1; | |
8bb4f253 JK |
1089 | } |
1090 | } | |
1091 | ||
35ec7d57 CY |
1092 | static void __update_discard_tree_range(struct f2fs_sb_info *sbi, |
1093 | struct block_device *bdev, block_t lstart, | |
1094 | block_t start, block_t len); | |
c81abe34 | 1095 | /* this function is copied from blkdev_issue_discard from block/blk-lib.c */ |
6b9cb124 | 1096 | static int __submit_discard_cmd(struct f2fs_sb_info *sbi, |
78997b56 | 1097 | struct discard_policy *dpolicy, |
35ec7d57 CY |
1098 | struct discard_cmd *dc, |
1099 | unsigned int *issued) | |
c81abe34 | 1100 | { |
35ec7d57 CY |
1101 | struct block_device *bdev = dc->bdev; |
1102 | struct request_queue *q = bdev_get_queue(bdev); | |
1103 | unsigned int max_discard_blocks = | |
1104 | SECTOR_TO_BLOCK(q->limits.max_discard_sectors); | |
c81abe34 | 1105 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
78997b56 CY |
1106 | struct list_head *wait_list = (dpolicy->type == DPOLICY_FSTRIM) ? |
1107 | &(dcc->fstrim_list) : &(dcc->wait_list); | |
78997b56 | 1108 | int flag = dpolicy->sync ? REQ_SYNC : 0; |
35ec7d57 CY |
1109 | block_t lstart, start, len, total_len; |
1110 | int err = 0; | |
c81abe34 JK |
1111 | |
1112 | if (dc->state != D_PREP) | |
6b9cb124 | 1113 | return 0; |
c81abe34 | 1114 | |
d6184774 | 1115 | if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) |
6b9cb124 | 1116 | return 0; |
d6184774 | 1117 | |
35ec7d57 CY |
1118 | trace_f2fs_issue_discard(bdev, dc->start, dc->len); |
1119 | ||
1120 | lstart = dc->lstart; | |
1121 | start = dc->start; | |
1122 | len = dc->len; | |
1123 | total_len = len; | |
1124 | ||
1125 | dc->len = 0; | |
1126 | ||
1127 | while (total_len && *issued < dpolicy->max_requests && !err) { | |
1128 | struct bio *bio = NULL; | |
1129 | unsigned long flags; | |
1130 | bool last = true; | |
1131 | ||
1132 | if (len > max_discard_blocks) { | |
1133 | len = max_discard_blocks; | |
1134 | last = false; | |
1135 | } | |
1136 | ||
1137 | (*issued)++; | |
1138 | if (*issued == dpolicy->max_requests) | |
1139 | last = true; | |
1140 | ||
1141 | dc->len += len; | |
1142 | ||
b83dcfe6 CY |
1143 | if (time_to_inject(sbi, FAULT_DISCARD)) { |
1144 | f2fs_show_injection_info(FAULT_DISCARD); | |
1145 | err = -EIO; | |
1146 | goto submit; | |
1147 | } | |
35ec7d57 CY |
1148 | err = __blkdev_issue_discard(bdev, |
1149 | SECTOR_FROM_BLOCK(start), | |
1150 | SECTOR_FROM_BLOCK(len), | |
1151 | GFP_NOFS, 0, &bio); | |
b83dcfe6 | 1152 | submit: |
6b9cb124 | 1153 | if (err) { |
35ec7d57 | 1154 | spin_lock_irqsave(&dc->lock, flags); |
6b9cb124 | 1155 | if (dc->state == D_PARTIAL) |
35ec7d57 | 1156 | dc->state = D_SUBMIT; |
35ec7d57 CY |
1157 | spin_unlock_irqrestore(&dc->lock, flags); |
1158 | ||
6b9cb124 CY |
1159 | break; |
1160 | } | |
35ec7d57 | 1161 | |
6b9cb124 | 1162 | f2fs_bug_on(sbi, !bio); |
35ec7d57 | 1163 | |
6b9cb124 CY |
1164 | /* |
1165 | * should keep before submission to avoid D_DONE | |
1166 | * right away | |
1167 | */ | |
1168 | spin_lock_irqsave(&dc->lock, flags); | |
1169 | if (last) | |
1170 | dc->state = D_SUBMIT; | |
1171 | else | |
1172 | dc->state = D_PARTIAL; | |
1173 | dc->bio_ref++; | |
1174 | spin_unlock_irqrestore(&dc->lock, flags); | |
35ec7d57 | 1175 | |
72691af6 JK |
1176 | atomic_inc(&dcc->queued_discard); |
1177 | dc->queued++; | |
6b9cb124 | 1178 | list_move_tail(&dc->list, wait_list); |
b0af6d49 | 1179 | |
6b9cb124 | 1180 | /* sanity check on discard range */ |
9249dded | 1181 | __check_sit_bitmap(sbi, lstart, lstart + len); |
35ec7d57 | 1182 | |
6b9cb124 CY |
1183 | bio->bi_private = dc; |
1184 | bio->bi_end_io = f2fs_submit_discard_endio; | |
1185 | bio->bi_opf |= flag; | |
1186 | submit_bio(bio); | |
1187 | ||
1188 | atomic_inc(&dcc->issued_discard); | |
1189 | ||
1190 | f2fs_update_iostat(sbi, FS_DISCARD, 1); | |
35ec7d57 CY |
1191 | |
1192 | lstart += len; | |
1193 | start += len; | |
1194 | total_len -= len; | |
1195 | len = total_len; | |
c81abe34 | 1196 | } |
35ec7d57 | 1197 | |
6b9cb124 | 1198 | if (!err && len) |
35ec7d57 | 1199 | __update_discard_tree_range(sbi, bdev, lstart, start, len); |
6b9cb124 | 1200 | return err; |
c81abe34 JK |
1201 | } |
1202 | ||
004b6862 CY |
1203 | static struct discard_cmd *__insert_discard_tree(struct f2fs_sb_info *sbi, |
1204 | struct block_device *bdev, block_t lstart, | |
1205 | block_t start, block_t len, | |
1206 | struct rb_node **insert_p, | |
1207 | struct rb_node *insert_parent) | |
c81abe34 | 1208 | { |
004b6862 | 1209 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
dca6951f | 1210 | struct rb_node **p; |
004b6862 CY |
1211 | struct rb_node *parent = NULL; |
1212 | struct discard_cmd *dc = NULL; | |
4dada3fd | 1213 | bool leftmost = true; |
004b6862 CY |
1214 | |
1215 | if (insert_p && insert_parent) { | |
1216 | parent = insert_parent; | |
1217 | p = insert_p; | |
1218 | goto do_insert; | |
1219 | } | |
c81abe34 | 1220 | |
4dada3fd CY |
1221 | p = f2fs_lookup_rb_tree_for_insert(sbi, &dcc->root, &parent, |
1222 | lstart, &leftmost); | |
004b6862 | 1223 | do_insert: |
4dada3fd CY |
1224 | dc = __attach_discard_cmd(sbi, bdev, lstart, start, len, parent, |
1225 | p, leftmost); | |
004b6862 CY |
1226 | if (!dc) |
1227 | return NULL; | |
c81abe34 | 1228 | |
004b6862 | 1229 | return dc; |
c81abe34 JK |
1230 | } |
1231 | ||
ba48a33e CY |
1232 | static void __relocate_discard_cmd(struct discard_cmd_control *dcc, |
1233 | struct discard_cmd *dc) | |
1234 | { | |
1235 | list_move_tail(&dc->list, &dcc->pend_list[plist_idx(dc->len)]); | |
1236 | } | |
1237 | ||
3d6a650f YH |
1238 | static void __punch_discard_cmd(struct f2fs_sb_info *sbi, |
1239 | struct discard_cmd *dc, block_t blkaddr) | |
1240 | { | |
ba48a33e | 1241 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
004b6862 CY |
1242 | struct discard_info di = dc->di; |
1243 | bool modified = false; | |
3d6a650f | 1244 | |
004b6862 | 1245 | if (dc->state == D_DONE || dc->len == 1) { |
3d6a650f YH |
1246 | __remove_discard_cmd(sbi, dc); |
1247 | return; | |
1248 | } | |
1249 | ||
d84d1cbd CY |
1250 | dcc->undiscard_blks -= di.len; |
1251 | ||
004b6862 | 1252 | if (blkaddr > di.lstart) { |
3d6a650f | 1253 | dc->len = blkaddr - dc->lstart; |
d84d1cbd | 1254 | dcc->undiscard_blks += dc->len; |
ba48a33e | 1255 | __relocate_discard_cmd(dcc, dc); |
004b6862 CY |
1256 | modified = true; |
1257 | } | |
1258 | ||
1259 | if (blkaddr < di.lstart + di.len - 1) { | |
1260 | if (modified) { | |
1261 | __insert_discard_tree(sbi, dc->bdev, blkaddr + 1, | |
1262 | di.start + blkaddr + 1 - di.lstart, | |
1263 | di.lstart + di.len - 1 - blkaddr, | |
1264 | NULL, NULL); | |
1265 | } else { | |
1266 | dc->lstart++; | |
1267 | dc->len--; | |
1268 | dc->start++; | |
d84d1cbd | 1269 | dcc->undiscard_blks += dc->len; |
ba48a33e | 1270 | __relocate_discard_cmd(dcc, dc); |
004b6862 | 1271 | } |
3d6a650f YH |
1272 | } |
1273 | } | |
1274 | ||
004b6862 CY |
1275 | static void __update_discard_tree_range(struct f2fs_sb_info *sbi, |
1276 | struct block_device *bdev, block_t lstart, | |
1277 | block_t start, block_t len) | |
275b66b0 | 1278 | { |
0b54fb84 | 1279 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
004b6862 CY |
1280 | struct discard_cmd *prev_dc = NULL, *next_dc = NULL; |
1281 | struct discard_cmd *dc; | |
1282 | struct discard_info di = {0}; | |
1283 | struct rb_node **insert_p = NULL, *insert_parent = NULL; | |
35ec7d57 CY |
1284 | struct request_queue *q = bdev_get_queue(bdev); |
1285 | unsigned int max_discard_blocks = | |
1286 | SECTOR_TO_BLOCK(q->limits.max_discard_sectors); | |
004b6862 | 1287 | block_t end = lstart + len; |
275b66b0 | 1288 | |
4d57b86d | 1289 | dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root, |
004b6862 CY |
1290 | NULL, lstart, |
1291 | (struct rb_entry **)&prev_dc, | |
1292 | (struct rb_entry **)&next_dc, | |
4dada3fd | 1293 | &insert_p, &insert_parent, true, NULL); |
004b6862 CY |
1294 | if (dc) |
1295 | prev_dc = dc; | |
1296 | ||
1297 | if (!prev_dc) { | |
1298 | di.lstart = lstart; | |
1299 | di.len = next_dc ? next_dc->lstart - lstart : len; | |
1300 | di.len = min(di.len, len); | |
1301 | di.start = start; | |
22d375dd | 1302 | } |
15469963 | 1303 | |
004b6862 CY |
1304 | while (1) { |
1305 | struct rb_node *node; | |
1306 | bool merged = false; | |
1307 | struct discard_cmd *tdc = NULL; | |
1308 | ||
1309 | if (prev_dc) { | |
1310 | di.lstart = prev_dc->lstart + prev_dc->len; | |
1311 | if (di.lstart < lstart) | |
1312 | di.lstart = lstart; | |
1313 | if (di.lstart >= end) | |
1314 | break; | |
1315 | ||
1316 | if (!next_dc || next_dc->lstart > end) | |
1317 | di.len = end - di.lstart; | |
1318 | else | |
1319 | di.len = next_dc->lstart - di.lstart; | |
1320 | di.start = start + di.lstart - lstart; | |
1321 | } | |
1322 | ||
1323 | if (!di.len) | |
1324 | goto next; | |
1325 | ||
1326 | if (prev_dc && prev_dc->state == D_PREP && | |
1327 | prev_dc->bdev == bdev && | |
35ec7d57 CY |
1328 | __is_discard_back_mergeable(&di, &prev_dc->di, |
1329 | max_discard_blocks)) { | |
004b6862 | 1330 | prev_dc->di.len += di.len; |
d84d1cbd | 1331 | dcc->undiscard_blks += di.len; |
ba48a33e | 1332 | __relocate_discard_cmd(dcc, prev_dc); |
004b6862 CY |
1333 | di = prev_dc->di; |
1334 | tdc = prev_dc; | |
1335 | merged = true; | |
1336 | } | |
1337 | ||
1338 | if (next_dc && next_dc->state == D_PREP && | |
1339 | next_dc->bdev == bdev && | |
35ec7d57 CY |
1340 | __is_discard_front_mergeable(&di, &next_dc->di, |
1341 | max_discard_blocks)) { | |
004b6862 CY |
1342 | next_dc->di.lstart = di.lstart; |
1343 | next_dc->di.len += di.len; | |
1344 | next_dc->di.start = di.start; | |
d84d1cbd | 1345 | dcc->undiscard_blks += di.len; |
ba48a33e | 1346 | __relocate_discard_cmd(dcc, next_dc); |
004b6862 CY |
1347 | if (tdc) |
1348 | __remove_discard_cmd(sbi, tdc); | |
004b6862 | 1349 | merged = true; |
4e6a8d9b | 1350 | } |
004b6862 | 1351 | |
df0f6b44 | 1352 | if (!merged) { |
004b6862 CY |
1353 | __insert_discard_tree(sbi, bdev, di.lstart, di.start, |
1354 | di.len, NULL, NULL); | |
df0f6b44 | 1355 | } |
004b6862 CY |
1356 | next: |
1357 | prev_dc = next_dc; | |
1358 | if (!prev_dc) | |
1359 | break; | |
1360 | ||
1361 | node = rb_next(&prev_dc->rb_node); | |
1362 | next_dc = rb_entry_safe(node, struct discard_cmd, rb_node); | |
1363 | } | |
004b6862 CY |
1364 | } |
1365 | ||
1366 | static int __queue_discard_cmd(struct f2fs_sb_info *sbi, | |
1367 | struct block_device *bdev, block_t blkstart, block_t blklen) | |
1368 | { | |
1369 | block_t lblkstart = blkstart; | |
1370 | ||
7f3d7719 DLM |
1371 | if (!f2fs_bdev_support_discard(bdev)) |
1372 | return 0; | |
1373 | ||
0243a5f9 | 1374 | trace_f2fs_queue_discard(bdev, blkstart, blklen); |
004b6862 | 1375 | |
0916878d | 1376 | if (f2fs_is_multi_device(sbi)) { |
004b6862 CY |
1377 | int devi = f2fs_target_device_index(sbi, blkstart); |
1378 | ||
1379 | blkstart -= FDEV(devi).start_blk; | |
1380 | } | |
35ec7d57 | 1381 | mutex_lock(&SM_I(sbi)->dcc_info->cmd_lock); |
004b6862 | 1382 | __update_discard_tree_range(sbi, bdev, lblkstart, blkstart, blklen); |
35ec7d57 | 1383 | mutex_unlock(&SM_I(sbi)->dcc_info->cmd_lock); |
004b6862 CY |
1384 | return 0; |
1385 | } | |
1386 | ||
20ee4382 CY |
1387 | static unsigned int __issue_discard_cmd_orderly(struct f2fs_sb_info *sbi, |
1388 | struct discard_policy *dpolicy) | |
1389 | { | |
1390 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1391 | struct discard_cmd *prev_dc = NULL, *next_dc = NULL; | |
1392 | struct rb_node **insert_p = NULL, *insert_parent = NULL; | |
1393 | struct discard_cmd *dc; | |
1394 | struct blk_plug plug; | |
1395 | unsigned int pos = dcc->next_pos; | |
1396 | unsigned int issued = 0; | |
1397 | bool io_interrupted = false; | |
1398 | ||
1399 | mutex_lock(&dcc->cmd_lock); | |
1400 | dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root, | |
1401 | NULL, pos, | |
1402 | (struct rb_entry **)&prev_dc, | |
1403 | (struct rb_entry **)&next_dc, | |
4dada3fd | 1404 | &insert_p, &insert_parent, true, NULL); |
20ee4382 CY |
1405 | if (!dc) |
1406 | dc = next_dc; | |
1407 | ||
1408 | blk_start_plug(&plug); | |
1409 | ||
1410 | while (dc) { | |
1411 | struct rb_node *node; | |
6b9cb124 | 1412 | int err = 0; |
20ee4382 CY |
1413 | |
1414 | if (dc->state != D_PREP) | |
1415 | goto next; | |
1416 | ||
a7d10cf3 | 1417 | if (dpolicy->io_aware && !is_idle(sbi, DISCARD_TIME)) { |
20ee4382 CY |
1418 | io_interrupted = true; |
1419 | break; | |
1420 | } | |
1421 | ||
1422 | dcc->next_pos = dc->lstart + dc->len; | |
6b9cb124 | 1423 | err = __submit_discard_cmd(sbi, dpolicy, dc, &issued); |
20ee4382 | 1424 | |
35ec7d57 | 1425 | if (issued >= dpolicy->max_requests) |
20ee4382 CY |
1426 | break; |
1427 | next: | |
1428 | node = rb_next(&dc->rb_node); | |
6b9cb124 CY |
1429 | if (err) |
1430 | __remove_discard_cmd(sbi, dc); | |
20ee4382 CY |
1431 | dc = rb_entry_safe(node, struct discard_cmd, rb_node); |
1432 | } | |
1433 | ||
1434 | blk_finish_plug(&plug); | |
1435 | ||
1436 | if (!dc) | |
1437 | dcc->next_pos = 0; | |
1438 | ||
1439 | mutex_unlock(&dcc->cmd_lock); | |
1440 | ||
1441 | if (!issued && io_interrupted) | |
1442 | issued = -1; | |
1443 | ||
1444 | return issued; | |
1445 | } | |
1446 | ||
78997b56 CY |
1447 | static int __issue_discard_cmd(struct f2fs_sb_info *sbi, |
1448 | struct discard_policy *dpolicy) | |
bd5b0738 CY |
1449 | { |
1450 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1451 | struct list_head *pend_list; | |
1452 | struct discard_cmd *dc, *tmp; | |
1453 | struct blk_plug plug; | |
522d1711 | 1454 | int i, issued = 0; |
e6c6de18 | 1455 | bool io_interrupted = false; |
bd5b0738 | 1456 | |
03f2c02d JK |
1457 | if (dpolicy->timeout != 0) |
1458 | f2fs_update_time(sbi, dpolicy->timeout); | |
1459 | ||
78997b56 | 1460 | for (i = MAX_PLIST_NUM - 1; i >= 0; i--) { |
03f2c02d JK |
1461 | if (dpolicy->timeout != 0 && |
1462 | f2fs_time_over(sbi, dpolicy->timeout)) | |
1463 | break; | |
1464 | ||
78997b56 CY |
1465 | if (i + 1 < dpolicy->granularity) |
1466 | break; | |
20ee4382 CY |
1467 | |
1468 | if (i < DEFAULT_DISCARD_GRANULARITY && dpolicy->ordered) | |
1469 | return __issue_discard_cmd_orderly(sbi, dpolicy); | |
1470 | ||
bd5b0738 | 1471 | pend_list = &dcc->pend_list[i]; |
33da62cf CY |
1472 | |
1473 | mutex_lock(&dcc->cmd_lock); | |
49c60c67 CY |
1474 | if (list_empty(pend_list)) |
1475 | goto next; | |
67fce70b CY |
1476 | if (unlikely(dcc->rbtree_check)) |
1477 | f2fs_bug_on(sbi, !f2fs_check_rb_tree_consistence(sbi, | |
1478 | &dcc->root)); | |
33da62cf | 1479 | blk_start_plug(&plug); |
bd5b0738 CY |
1480 | list_for_each_entry_safe(dc, tmp, pend_list, list) { |
1481 | f2fs_bug_on(sbi, dc->state != D_PREP); | |
1482 | ||
ecc9aa00 | 1483 | if (dpolicy->io_aware && i < dpolicy->io_aware_gran && |
a7d10cf3 | 1484 | !is_idle(sbi, DISCARD_TIME)) { |
e6c6de18 | 1485 | io_interrupted = true; |
522d1711 | 1486 | break; |
969d1b18 | 1487 | } |
e6c6de18 | 1488 | |
35ec7d57 | 1489 | __submit_discard_cmd(sbi, dpolicy, dc, &issued); |
522d1711 | 1490 | |
35ec7d57 | 1491 | if (issued >= dpolicy->max_requests) |
33da62cf | 1492 | break; |
bd5b0738 | 1493 | } |
33da62cf | 1494 | blk_finish_plug(&plug); |
49c60c67 | 1495 | next: |
33da62cf CY |
1496 | mutex_unlock(&dcc->cmd_lock); |
1497 | ||
522d1711 | 1498 | if (issued >= dpolicy->max_requests || io_interrupted) |
33da62cf | 1499 | break; |
bd5b0738 | 1500 | } |
969d1b18 | 1501 | |
e6c6de18 CY |
1502 | if (!issued && io_interrupted) |
1503 | issued = -1; | |
1504 | ||
969d1b18 CY |
1505 | return issued; |
1506 | } | |
1507 | ||
cf5c759f | 1508 | static bool __drop_discard_cmd(struct f2fs_sb_info *sbi) |
969d1b18 CY |
1509 | { |
1510 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1511 | struct list_head *pend_list; | |
1512 | struct discard_cmd *dc, *tmp; | |
1513 | int i; | |
cf5c759f | 1514 | bool dropped = false; |
969d1b18 CY |
1515 | |
1516 | mutex_lock(&dcc->cmd_lock); | |
1517 | for (i = MAX_PLIST_NUM - 1; i >= 0; i--) { | |
1518 | pend_list = &dcc->pend_list[i]; | |
1519 | list_for_each_entry_safe(dc, tmp, pend_list, list) { | |
1520 | f2fs_bug_on(sbi, dc->state != D_PREP); | |
1521 | __remove_discard_cmd(sbi, dc); | |
cf5c759f | 1522 | dropped = true; |
969d1b18 CY |
1523 | } |
1524 | } | |
1525 | mutex_unlock(&dcc->cmd_lock); | |
cf5c759f CY |
1526 | |
1527 | return dropped; | |
bd5b0738 CY |
1528 | } |
1529 | ||
4d57b86d | 1530 | void f2fs_drop_discard_cmd(struct f2fs_sb_info *sbi) |
7950e9ac CY |
1531 | { |
1532 | __drop_discard_cmd(sbi); | |
1533 | } | |
1534 | ||
0ea80512 | 1535 | static unsigned int __wait_one_discard_bio(struct f2fs_sb_info *sbi, |
2a510c00 CY |
1536 | struct discard_cmd *dc) |
1537 | { | |
1538 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
0ea80512 | 1539 | unsigned int len = 0; |
2a510c00 CY |
1540 | |
1541 | wait_for_completion_io(&dc->wait); | |
1542 | mutex_lock(&dcc->cmd_lock); | |
1543 | f2fs_bug_on(sbi, dc->state != D_DONE); | |
1544 | dc->ref--; | |
0ea80512 CY |
1545 | if (!dc->ref) { |
1546 | if (!dc->error) | |
1547 | len = dc->len; | |
2a510c00 | 1548 | __remove_discard_cmd(sbi, dc); |
0ea80512 | 1549 | } |
2a510c00 | 1550 | mutex_unlock(&dcc->cmd_lock); |
0ea80512 CY |
1551 | |
1552 | return len; | |
2a510c00 CY |
1553 | } |
1554 | ||
0ea80512 | 1555 | static unsigned int __wait_discard_cmd_range(struct f2fs_sb_info *sbi, |
78997b56 CY |
1556 | struct discard_policy *dpolicy, |
1557 | block_t start, block_t end) | |
63a94fa1 CY |
1558 | { |
1559 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
78997b56 CY |
1560 | struct list_head *wait_list = (dpolicy->type == DPOLICY_FSTRIM) ? |
1561 | &(dcc->fstrim_list) : &(dcc->wait_list); | |
63a94fa1 | 1562 | struct discard_cmd *dc, *tmp; |
6afae633 | 1563 | bool need_wait; |
0ea80512 | 1564 | unsigned int trimmed = 0; |
6afae633 CY |
1565 | |
1566 | next: | |
1567 | need_wait = false; | |
63a94fa1 CY |
1568 | |
1569 | mutex_lock(&dcc->cmd_lock); | |
1570 | list_for_each_entry_safe(dc, tmp, wait_list, list) { | |
8412663d CY |
1571 | if (dc->lstart + dc->len <= start || end <= dc->lstart) |
1572 | continue; | |
78997b56 | 1573 | if (dc->len < dpolicy->granularity) |
8412663d | 1574 | continue; |
78997b56 | 1575 | if (dc->state == D_DONE && !dc->ref) { |
63a94fa1 | 1576 | wait_for_completion_io(&dc->wait); |
0ea80512 CY |
1577 | if (!dc->error) |
1578 | trimmed += dc->len; | |
63a94fa1 | 1579 | __remove_discard_cmd(sbi, dc); |
6afae633 CY |
1580 | } else { |
1581 | dc->ref++; | |
1582 | need_wait = true; | |
1583 | break; | |
63a94fa1 CY |
1584 | } |
1585 | } | |
1586 | mutex_unlock(&dcc->cmd_lock); | |
6afae633 CY |
1587 | |
1588 | if (need_wait) { | |
0ea80512 | 1589 | trimmed += __wait_one_discard_bio(sbi, dc); |
6afae633 CY |
1590 | goto next; |
1591 | } | |
0ea80512 CY |
1592 | |
1593 | return trimmed; | |
63a94fa1 CY |
1594 | } |
1595 | ||
01f9cf6d | 1596 | static unsigned int __wait_all_discard_cmd(struct f2fs_sb_info *sbi, |
78997b56 | 1597 | struct discard_policy *dpolicy) |
8412663d | 1598 | { |
9a997188 | 1599 | struct discard_policy dp; |
01f9cf6d | 1600 | unsigned int discard_blks; |
9a997188 | 1601 | |
01f9cf6d CY |
1602 | if (dpolicy) |
1603 | return __wait_discard_cmd_range(sbi, dpolicy, 0, UINT_MAX); | |
9a997188 JK |
1604 | |
1605 | /* wait all */ | |
8bb4f253 | 1606 | __init_discard_policy(sbi, &dp, DPOLICY_FSTRIM, 1); |
01f9cf6d | 1607 | discard_blks = __wait_discard_cmd_range(sbi, &dp, 0, UINT_MAX); |
8bb4f253 | 1608 | __init_discard_policy(sbi, &dp, DPOLICY_UMOUNT, 1); |
01f9cf6d CY |
1609 | discard_blks += __wait_discard_cmd_range(sbi, &dp, 0, UINT_MAX); |
1610 | ||
1611 | return discard_blks; | |
8412663d CY |
1612 | } |
1613 | ||
004b6862 | 1614 | /* This should be covered by global mutex, &sit_i->sentry_lock */ |
94b1e10e | 1615 | static void f2fs_wait_discard_bio(struct f2fs_sb_info *sbi, block_t blkaddr) |
004b6862 CY |
1616 | { |
1617 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1618 | struct discard_cmd *dc; | |
ec9895ad | 1619 | bool need_wait = false; |
004b6862 CY |
1620 | |
1621 | mutex_lock(&dcc->cmd_lock); | |
4d57b86d CY |
1622 | dc = (struct discard_cmd *)f2fs_lookup_rb_tree(&dcc->root, |
1623 | NULL, blkaddr); | |
004b6862 | 1624 | if (dc) { |
ec9895ad CY |
1625 | if (dc->state == D_PREP) { |
1626 | __punch_discard_cmd(sbi, dc, blkaddr); | |
1627 | } else { | |
1628 | dc->ref++; | |
1629 | need_wait = true; | |
1630 | } | |
275b66b0 | 1631 | } |
d431413f | 1632 | mutex_unlock(&dcc->cmd_lock); |
ec9895ad | 1633 | |
2a510c00 CY |
1634 | if (need_wait) |
1635 | __wait_one_discard_bio(sbi, dc); | |
d431413f CY |
1636 | } |
1637 | ||
4d57b86d | 1638 | void f2fs_stop_discard_thread(struct f2fs_sb_info *sbi) |
cce13252 CY |
1639 | { |
1640 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1641 | ||
1642 | if (dcc && dcc->f2fs_issue_discard) { | |
1643 | struct task_struct *discard_thread = dcc->f2fs_issue_discard; | |
1644 | ||
1645 | dcc->f2fs_issue_discard = NULL; | |
1646 | kthread_stop(discard_thread); | |
ec9895ad | 1647 | } |
d431413f CY |
1648 | } |
1649 | ||
8412663d | 1650 | /* This comes from f2fs_put_super */ |
03f2c02d | 1651 | bool f2fs_issue_discard_timeout(struct f2fs_sb_info *sbi) |
969d1b18 CY |
1652 | { |
1653 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
78997b56 | 1654 | struct discard_policy dpolicy; |
cf5c759f | 1655 | bool dropped; |
969d1b18 | 1656 | |
8bb4f253 JK |
1657 | __init_discard_policy(sbi, &dpolicy, DPOLICY_UMOUNT, |
1658 | dcc->discard_granularity); | |
03f2c02d | 1659 | dpolicy.timeout = UMOUNT_DISCARD_TIMEOUT; |
78997b56 | 1660 | __issue_discard_cmd(sbi, &dpolicy); |
cf5c759f | 1661 | dropped = __drop_discard_cmd(sbi); |
cf5c759f | 1662 | |
9a997188 JK |
1663 | /* just to make sure there is no pending discard commands */ |
1664 | __wait_all_discard_cmd(sbi, NULL); | |
2482c432 CY |
1665 | |
1666 | f2fs_bug_on(sbi, atomic_read(&dcc->discard_cmd_cnt)); | |
cf5c759f | 1667 | return dropped; |
969d1b18 CY |
1668 | } |
1669 | ||
15469963 JK |
1670 | static int issue_discard_thread(void *data) |
1671 | { | |
1672 | struct f2fs_sb_info *sbi = data; | |
1673 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1674 | wait_queue_head_t *q = &dcc->discard_wait_queue; | |
78997b56 | 1675 | struct discard_policy dpolicy; |
969d1b18 CY |
1676 | unsigned int wait_ms = DEF_MIN_DISCARD_ISSUE_TIME; |
1677 | int issued; | |
15469963 | 1678 | |
1d7be270 | 1679 | set_freezable(); |
15469963 | 1680 | |
1d7be270 | 1681 | do { |
8bb4f253 | 1682 | __init_discard_policy(sbi, &dpolicy, DPOLICY_BG, |
78997b56 CY |
1683 | dcc->discard_granularity); |
1684 | ||
969d1b18 CY |
1685 | wait_event_interruptible_timeout(*q, |
1686 | kthread_should_stop() || freezing(current) || | |
1687 | dcc->discard_wake, | |
1688 | msecs_to_jiffies(wait_ms)); | |
35a9a766 SY |
1689 | |
1690 | if (dcc->discard_wake) | |
1691 | dcc->discard_wake = 0; | |
1692 | ||
76c7bfb3 JK |
1693 | /* clean up pending candidates before going to sleep */ |
1694 | if (atomic_read(&dcc->queued_discard)) | |
1695 | __wait_all_discard_cmd(sbi, NULL); | |
1696 | ||
1d7be270 JK |
1697 | if (try_to_freeze()) |
1698 | continue; | |
3b60d802 CY |
1699 | if (f2fs_readonly(sbi->sb)) |
1700 | continue; | |
1d7be270 JK |
1701 | if (kthread_should_stop()) |
1702 | return 0; | |
d6184774 YH |
1703 | if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) { |
1704 | wait_ms = dpolicy.max_interval; | |
1705 | continue; | |
1706 | } | |
15469963 | 1707 | |
5b0e9539 | 1708 | if (sbi->gc_mode == GC_URGENT) |
8bb4f253 | 1709 | __init_discard_policy(sbi, &dpolicy, DPOLICY_FORCE, 1); |
969d1b18 | 1710 | |
dc6febb6 CY |
1711 | sb_start_intwrite(sbi->sb); |
1712 | ||
78997b56 | 1713 | issued = __issue_discard_cmd(sbi, &dpolicy); |
f9d1dced | 1714 | if (issued > 0) { |
78997b56 CY |
1715 | __wait_all_discard_cmd(sbi, &dpolicy); |
1716 | wait_ms = dpolicy.min_interval; | |
f9d1dced | 1717 | } else if (issued == -1){ |
a7d10cf3 ST |
1718 | wait_ms = f2fs_time_to_wait(sbi, DISCARD_TIME); |
1719 | if (!wait_ms) | |
abde73c7 | 1720 | wait_ms = dpolicy.mid_interval; |
969d1b18 | 1721 | } else { |
78997b56 | 1722 | wait_ms = dpolicy.max_interval; |
969d1b18 | 1723 | } |
1d7be270 | 1724 | |
dc6febb6 | 1725 | sb_end_intwrite(sbi->sb); |
1d7be270 | 1726 | |
1d7be270 JK |
1727 | } while (!kthread_should_stop()); |
1728 | return 0; | |
15469963 JK |
1729 | } |
1730 | ||
f46e8809 | 1731 | #ifdef CONFIG_BLK_DEV_ZONED |
3c62be17 JK |
1732 | static int __f2fs_issue_discard_zone(struct f2fs_sb_info *sbi, |
1733 | struct block_device *bdev, block_t blkstart, block_t blklen) | |
f46e8809 | 1734 | { |
92592285 | 1735 | sector_t sector, nr_sects; |
10a875f8 | 1736 | block_t lblkstart = blkstart; |
3c62be17 JK |
1737 | int devi = 0; |
1738 | ||
0916878d | 1739 | if (f2fs_is_multi_device(sbi)) { |
3c62be17 | 1740 | devi = f2fs_target_device_index(sbi, blkstart); |
95175daf DLM |
1741 | if (blkstart < FDEV(devi).start_blk || |
1742 | blkstart > FDEV(devi).end_blk) { | |
1743 | f2fs_msg(sbi->sb, KERN_ERR, "Invalid block %x", | |
1744 | blkstart); | |
1745 | return -EIO; | |
1746 | } | |
3c62be17 JK |
1747 | blkstart -= FDEV(devi).start_blk; |
1748 | } | |
f46e8809 | 1749 | |
95175daf DLM |
1750 | /* For sequential zones, reset the zone write pointer */ |
1751 | if (f2fs_blkz_is_seq(sbi, devi, blkstart)) { | |
92592285 JK |
1752 | sector = SECTOR_FROM_BLOCK(blkstart); |
1753 | nr_sects = SECTOR_FROM_BLOCK(blklen); | |
1754 | ||
1755 | if (sector & (bdev_zone_sectors(bdev) - 1) || | |
1756 | nr_sects != bdev_zone_sectors(bdev)) { | |
95175daf DLM |
1757 | f2fs_msg(sbi->sb, KERN_ERR, |
1758 | "(%d) %s: Unaligned zone reset attempted (block %x + %x)", | |
92592285 JK |
1759 | devi, sbi->s_ndevs ? FDEV(devi).path: "", |
1760 | blkstart, blklen); | |
1761 | return -EIO; | |
1762 | } | |
d50aaeec | 1763 | trace_f2fs_issue_reset_zone(bdev, blkstart); |
95175daf | 1764 | return blkdev_reset_zones(bdev, sector, nr_sects, GFP_NOFS); |
f46e8809 | 1765 | } |
95175daf DLM |
1766 | |
1767 | /* For conventional zones, use regular discard if supported */ | |
95175daf | 1768 | return __queue_discard_cmd(sbi, bdev, lblkstart, blklen); |
f46e8809 DLM |
1769 | } |
1770 | #endif | |
1771 | ||
3c62be17 JK |
1772 | static int __issue_discard_async(struct f2fs_sb_info *sbi, |
1773 | struct block_device *bdev, block_t blkstart, block_t blklen) | |
1774 | { | |
1775 | #ifdef CONFIG_BLK_DEV_ZONED | |
7f3d7719 | 1776 | if (f2fs_sb_has_blkzoned(sbi) && bdev_is_zoned(bdev)) |
3c62be17 JK |
1777 | return __f2fs_issue_discard_zone(sbi, bdev, blkstart, blklen); |
1778 | #endif | |
c81abe34 | 1779 | return __queue_discard_cmd(sbi, bdev, blkstart, blklen); |
3c62be17 JK |
1780 | } |
1781 | ||
1e87a78d | 1782 | static int f2fs_issue_discard(struct f2fs_sb_info *sbi, |
37208879 JK |
1783 | block_t blkstart, block_t blklen) |
1784 | { | |
3c62be17 JK |
1785 | sector_t start = blkstart, len = 0; |
1786 | struct block_device *bdev; | |
a66cdd98 JK |
1787 | struct seg_entry *se; |
1788 | unsigned int offset; | |
1789 | block_t i; | |
3c62be17 JK |
1790 | int err = 0; |
1791 | ||
1792 | bdev = f2fs_target_device(sbi, blkstart, NULL); | |
1793 | ||
1794 | for (i = blkstart; i < blkstart + blklen; i++, len++) { | |
1795 | if (i != start) { | |
1796 | struct block_device *bdev2 = | |
1797 | f2fs_target_device(sbi, i, NULL); | |
1798 | ||
1799 | if (bdev2 != bdev) { | |
1800 | err = __issue_discard_async(sbi, bdev, | |
1801 | start, len); | |
1802 | if (err) | |
1803 | return err; | |
1804 | bdev = bdev2; | |
1805 | start = i; | |
1806 | len = 0; | |
1807 | } | |
1808 | } | |
a66cdd98 | 1809 | |
a66cdd98 JK |
1810 | se = get_seg_entry(sbi, GET_SEGNO(sbi, i)); |
1811 | offset = GET_BLKOFF_FROM_SEG0(sbi, i); | |
1812 | ||
1813 | if (!f2fs_test_and_set_bit(offset, se->discard_map)) | |
1814 | sbi->discard_blks--; | |
1815 | } | |
f46e8809 | 1816 | |
3c62be17 JK |
1817 | if (len) |
1818 | err = __issue_discard_async(sbi, bdev, start, len); | |
1819 | return err; | |
1e87a78d JK |
1820 | } |
1821 | ||
25290fa5 JK |
1822 | static bool add_discard_addrs(struct f2fs_sb_info *sbi, struct cp_control *cpc, |
1823 | bool check_only) | |
adf4983b | 1824 | { |
b2955550 JK |
1825 | int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long); |
1826 | int max_blocks = sbi->blocks_per_seg; | |
4b2fecc8 | 1827 | struct seg_entry *se = get_seg_entry(sbi, cpc->trim_start); |
b2955550 JK |
1828 | unsigned long *cur_map = (unsigned long *)se->cur_valid_map; |
1829 | unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map; | |
a66cdd98 | 1830 | unsigned long *discard_map = (unsigned long *)se->discard_map; |
60a3b782 | 1831 | unsigned long *dmap = SIT_I(sbi)->tmp_map; |
b2955550 | 1832 | unsigned int start = 0, end = -1; |
c473f1a9 | 1833 | bool force = (cpc->reason & CP_DISCARD); |
a7eeb823 | 1834 | struct discard_entry *de = NULL; |
46f84c2c | 1835 | struct list_head *head = &SM_I(sbi)->dcc_info->entry_list; |
b2955550 JK |
1836 | int i; |
1837 | ||
7d20c8ab | 1838 | if (se->valid_blocks == max_blocks || !f2fs_hw_support_discard(sbi)) |
25290fa5 | 1839 | return false; |
b2955550 | 1840 | |
a66cdd98 | 1841 | if (!force) { |
7d20c8ab | 1842 | if (!f2fs_realtime_discard_enable(sbi) || !se->valid_blocks || |
0b54fb84 JK |
1843 | SM_I(sbi)->dcc_info->nr_discards >= |
1844 | SM_I(sbi)->dcc_info->max_discards) | |
25290fa5 | 1845 | return false; |
4b2fecc8 JK |
1846 | } |
1847 | ||
b2955550 JK |
1848 | /* SIT_VBLOCK_MAP_SIZE should be multiple of sizeof(unsigned long) */ |
1849 | for (i = 0; i < entries; i++) | |
a66cdd98 | 1850 | dmap[i] = force ? ~ckpt_map[i] & ~discard_map[i] : |
d7bc2484 | 1851 | (cur_map[i] ^ ckpt_map[i]) & ckpt_map[i]; |
b2955550 | 1852 | |
0b54fb84 JK |
1853 | while (force || SM_I(sbi)->dcc_info->nr_discards <= |
1854 | SM_I(sbi)->dcc_info->max_discards) { | |
b2955550 JK |
1855 | start = __find_rev_next_bit(dmap, max_blocks, end + 1); |
1856 | if (start >= max_blocks) | |
1857 | break; | |
1858 | ||
1859 | end = __find_rev_next_zero_bit(dmap, max_blocks, start + 1); | |
c7b41e16 YH |
1860 | if (force && start && end != max_blocks |
1861 | && (end - start) < cpc->trim_minlen) | |
1862 | continue; | |
1863 | ||
25290fa5 JK |
1864 | if (check_only) |
1865 | return true; | |
1866 | ||
a7eeb823 CY |
1867 | if (!de) { |
1868 | de = f2fs_kmem_cache_alloc(discard_entry_slab, | |
1869 | GFP_F2FS_ZERO); | |
1870 | de->start_blkaddr = START_BLOCK(sbi, cpc->trim_start); | |
1871 | list_add_tail(&de->list, head); | |
1872 | } | |
1873 | ||
1874 | for (i = start; i < end; i++) | |
1875 | __set_bit_le(i, (void *)de->discard_map); | |
1876 | ||
1877 | SM_I(sbi)->dcc_info->nr_discards += end - start; | |
b2955550 | 1878 | } |
25290fa5 | 1879 | return false; |
b2955550 JK |
1880 | } |
1881 | ||
af8ff65b CY |
1882 | static void release_discard_addr(struct discard_entry *entry) |
1883 | { | |
1884 | list_del(&entry->list); | |
1885 | kmem_cache_free(discard_entry_slab, entry); | |
1886 | } | |
1887 | ||
4d57b86d | 1888 | void f2fs_release_discard_addrs(struct f2fs_sb_info *sbi) |
4b2fecc8 | 1889 | { |
46f84c2c | 1890 | struct list_head *head = &(SM_I(sbi)->dcc_info->entry_list); |
4b2fecc8 JK |
1891 | struct discard_entry *entry, *this; |
1892 | ||
1893 | /* drop caches */ | |
af8ff65b CY |
1894 | list_for_each_entry_safe(entry, this, head, list) |
1895 | release_discard_addr(entry); | |
4b2fecc8 JK |
1896 | } |
1897 | ||
0a8165d7 | 1898 | /* |
4d57b86d | 1899 | * Should call f2fs_clear_prefree_segments after checkpoint is done. |
351df4b2 JK |
1900 | */ |
1901 | static void set_prefree_as_free_segments(struct f2fs_sb_info *sbi) | |
1902 | { | |
1903 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
b65ee148 | 1904 | unsigned int segno; |
351df4b2 JK |
1905 | |
1906 | mutex_lock(&dirty_i->seglist_lock); | |
7cd8558b | 1907 | for_each_set_bit(segno, dirty_i->dirty_segmap[PRE], MAIN_SEGS(sbi)) |
351df4b2 | 1908 | __set_test_and_free(sbi, segno); |
351df4b2 JK |
1909 | mutex_unlock(&dirty_i->seglist_lock); |
1910 | } | |
1911 | ||
4d57b86d CY |
1912 | void f2fs_clear_prefree_segments(struct f2fs_sb_info *sbi, |
1913 | struct cp_control *cpc) | |
351df4b2 | 1914 | { |
969d1b18 CY |
1915 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
1916 | struct list_head *head = &dcc->entry_list; | |
2d7b822a | 1917 | struct discard_entry *entry, *this; |
351df4b2 | 1918 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); |
29e59c14 | 1919 | unsigned long *prefree_map = dirty_i->dirty_segmap[PRE]; |
29e59c14 | 1920 | unsigned int start = 0, end = -1; |
36abef4e | 1921 | unsigned int secno, start_segno; |
c473f1a9 | 1922 | bool force = (cpc->reason & CP_DISCARD); |
2c70c5e3 | 1923 | bool need_align = test_opt(sbi, LFS) && __is_large_section(sbi); |
351df4b2 JK |
1924 | |
1925 | mutex_lock(&dirty_i->seglist_lock); | |
29e59c14 | 1926 | |
351df4b2 | 1927 | while (1) { |
29e59c14 | 1928 | int i; |
ad6672bb YS |
1929 | |
1930 | if (need_align && end != -1) | |
1931 | end--; | |
7cd8558b JK |
1932 | start = find_next_bit(prefree_map, MAIN_SEGS(sbi), end + 1); |
1933 | if (start >= MAIN_SEGS(sbi)) | |
351df4b2 | 1934 | break; |
7cd8558b JK |
1935 | end = find_next_zero_bit(prefree_map, MAIN_SEGS(sbi), |
1936 | start + 1); | |
29e59c14 | 1937 | |
ad6672bb YS |
1938 | if (need_align) { |
1939 | start = rounddown(start, sbi->segs_per_sec); | |
1940 | end = roundup(end, sbi->segs_per_sec); | |
1941 | } | |
29e59c14 | 1942 | |
ad6672bb YS |
1943 | for (i = start; i < end; i++) { |
1944 | if (test_and_clear_bit(i, prefree_map)) | |
1945 | dirty_i->nr_dirty[PRE]--; | |
1946 | } | |
29e59c14 | 1947 | |
7d20c8ab | 1948 | if (!f2fs_realtime_discard_enable(sbi)) |
29e59c14 | 1949 | continue; |
351df4b2 | 1950 | |
650d3c4e YH |
1951 | if (force && start >= cpc->trim_start && |
1952 | (end - 1) <= cpc->trim_end) | |
1953 | continue; | |
1954 | ||
2c70c5e3 | 1955 | if (!test_opt(sbi, LFS) || !__is_large_section(sbi)) { |
36abef4e | 1956 | f2fs_issue_discard(sbi, START_BLOCK(sbi, start), |
37208879 | 1957 | (end - start) << sbi->log_blocks_per_seg); |
36abef4e JK |
1958 | continue; |
1959 | } | |
1960 | next: | |
4ddb1a4d JK |
1961 | secno = GET_SEC_FROM_SEG(sbi, start); |
1962 | start_segno = GET_SEG_FROM_SEC(sbi, secno); | |
36abef4e | 1963 | if (!IS_CURSEC(sbi, secno) && |
302bd348 | 1964 | !get_valid_blocks(sbi, start, true)) |
36abef4e JK |
1965 | f2fs_issue_discard(sbi, START_BLOCK(sbi, start_segno), |
1966 | sbi->segs_per_sec << sbi->log_blocks_per_seg); | |
1967 | ||
1968 | start = start_segno + sbi->segs_per_sec; | |
1969 | if (start < end) | |
1970 | goto next; | |
8b107f5b JK |
1971 | else |
1972 | end = start - 1; | |
351df4b2 JK |
1973 | } |
1974 | mutex_unlock(&dirty_i->seglist_lock); | |
b2955550 JK |
1975 | |
1976 | /* send small discards */ | |
2d7b822a | 1977 | list_for_each_entry_safe(entry, this, head, list) { |
a7eeb823 CY |
1978 | unsigned int cur_pos = 0, next_pos, len, total_len = 0; |
1979 | bool is_valid = test_bit_le(0, entry->discard_map); | |
1980 | ||
1981 | find_next: | |
1982 | if (is_valid) { | |
1983 | next_pos = find_next_zero_bit_le(entry->discard_map, | |
1984 | sbi->blocks_per_seg, cur_pos); | |
1985 | len = next_pos - cur_pos; | |
1986 | ||
7beb01f7 | 1987 | if (f2fs_sb_has_blkzoned(sbi) || |
acfd2810 | 1988 | (force && len < cpc->trim_minlen)) |
a7eeb823 CY |
1989 | goto skip; |
1990 | ||
1991 | f2fs_issue_discard(sbi, entry->start_blkaddr + cur_pos, | |
1992 | len); | |
a7eeb823 CY |
1993 | total_len += len; |
1994 | } else { | |
1995 | next_pos = find_next_bit_le(entry->discard_map, | |
1996 | sbi->blocks_per_seg, cur_pos); | |
1997 | } | |
836b5a63 | 1998 | skip: |
a7eeb823 CY |
1999 | cur_pos = next_pos; |
2000 | is_valid = !is_valid; | |
2001 | ||
2002 | if (cur_pos < sbi->blocks_per_seg) | |
2003 | goto find_next; | |
2004 | ||
af8ff65b | 2005 | release_discard_addr(entry); |
969d1b18 | 2006 | dcc->nr_discards -= total_len; |
b2955550 | 2007 | } |
34e159da | 2008 | |
01983c71 | 2009 | wake_up_discard_thread(sbi, false); |
351df4b2 JK |
2010 | } |
2011 | ||
8ed59745 | 2012 | static int create_discard_cmd_control(struct f2fs_sb_info *sbi) |
0b54fb84 | 2013 | { |
15469963 | 2014 | dev_t dev = sbi->sb->s_bdev->bd_dev; |
0b54fb84 | 2015 | struct discard_cmd_control *dcc; |
ba48a33e | 2016 | int err = 0, i; |
0b54fb84 JK |
2017 | |
2018 | if (SM_I(sbi)->dcc_info) { | |
2019 | dcc = SM_I(sbi)->dcc_info; | |
2020 | goto init_thread; | |
2021 | } | |
2022 | ||
acbf054d | 2023 | dcc = f2fs_kzalloc(sbi, sizeof(struct discard_cmd_control), GFP_KERNEL); |
0b54fb84 JK |
2024 | if (!dcc) |
2025 | return -ENOMEM; | |
2026 | ||
969d1b18 | 2027 | dcc->discard_granularity = DEFAULT_DISCARD_GRANULARITY; |
46f84c2c | 2028 | INIT_LIST_HEAD(&dcc->entry_list); |
78997b56 | 2029 | for (i = 0; i < MAX_PLIST_NUM; i++) |
ba48a33e | 2030 | INIT_LIST_HEAD(&dcc->pend_list[i]); |
46f84c2c | 2031 | INIT_LIST_HEAD(&dcc->wait_list); |
8412663d | 2032 | INIT_LIST_HEAD(&dcc->fstrim_list); |
15469963 | 2033 | mutex_init(&dcc->cmd_lock); |
8b8dd65f | 2034 | atomic_set(&dcc->issued_discard, 0); |
72691af6 | 2035 | atomic_set(&dcc->queued_discard, 0); |
5f32366a | 2036 | atomic_set(&dcc->discard_cmd_cnt, 0); |
0b54fb84 | 2037 | dcc->nr_discards = 0; |
d618ebaf | 2038 | dcc->max_discards = MAIN_SEGS(sbi) << sbi->log_blocks_per_seg; |
d84d1cbd | 2039 | dcc->undiscard_blks = 0; |
20ee4382 | 2040 | dcc->next_pos = 0; |
4dada3fd | 2041 | dcc->root = RB_ROOT_CACHED; |
67fce70b | 2042 | dcc->rbtree_check = false; |
0b54fb84 | 2043 | |
15469963 | 2044 | init_waitqueue_head(&dcc->discard_wait_queue); |
0b54fb84 JK |
2045 | SM_I(sbi)->dcc_info = dcc; |
2046 | init_thread: | |
15469963 JK |
2047 | dcc->f2fs_issue_discard = kthread_run(issue_discard_thread, sbi, |
2048 | "f2fs_discard-%u:%u", MAJOR(dev), MINOR(dev)); | |
2049 | if (IS_ERR(dcc->f2fs_issue_discard)) { | |
2050 | err = PTR_ERR(dcc->f2fs_issue_discard); | |
5222595d | 2051 | kvfree(dcc); |
15469963 JK |
2052 | SM_I(sbi)->dcc_info = NULL; |
2053 | return err; | |
2054 | } | |
2055 | ||
0b54fb84 JK |
2056 | return err; |
2057 | } | |
2058 | ||
f099405f | 2059 | static void destroy_discard_cmd_control(struct f2fs_sb_info *sbi) |
0b54fb84 JK |
2060 | { |
2061 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
2062 | ||
f099405f CY |
2063 | if (!dcc) |
2064 | return; | |
2065 | ||
4d57b86d | 2066 | f2fs_stop_discard_thread(sbi); |
f099405f | 2067 | |
5222595d | 2068 | kvfree(dcc); |
f099405f | 2069 | SM_I(sbi)->dcc_info = NULL; |
0b54fb84 JK |
2070 | } |
2071 | ||
184a5cd2 | 2072 | static bool __mark_sit_entry_dirty(struct f2fs_sb_info *sbi, unsigned int segno) |
351df4b2 JK |
2073 | { |
2074 | struct sit_info *sit_i = SIT_I(sbi); | |
184a5cd2 CY |
2075 | |
2076 | if (!__test_and_set_bit(segno, sit_i->dirty_sentries_bitmap)) { | |
351df4b2 | 2077 | sit_i->dirty_sentries++; |
184a5cd2 CY |
2078 | return false; |
2079 | } | |
2080 | ||
2081 | return true; | |
351df4b2 JK |
2082 | } |
2083 | ||
2084 | static void __set_sit_entry_type(struct f2fs_sb_info *sbi, int type, | |
2085 | unsigned int segno, int modified) | |
2086 | { | |
2087 | struct seg_entry *se = get_seg_entry(sbi, segno); | |
2088 | se->type = type; | |
2089 | if (modified) | |
2090 | __mark_sit_entry_dirty(sbi, segno); | |
2091 | } | |
2092 | ||
2093 | static void update_sit_entry(struct f2fs_sb_info *sbi, block_t blkaddr, int del) | |
2094 | { | |
2095 | struct seg_entry *se; | |
2096 | unsigned int segno, offset; | |
2097 | long int new_vblocks; | |
6415fedc YS |
2098 | bool exist; |
2099 | #ifdef CONFIG_F2FS_CHECK_FS | |
2100 | bool mir_exist; | |
2101 | #endif | |
351df4b2 JK |
2102 | |
2103 | segno = GET_SEGNO(sbi, blkaddr); | |
2104 | ||
2105 | se = get_seg_entry(sbi, segno); | |
2106 | new_vblocks = se->valid_blocks + del; | |
491c0854 | 2107 | offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); |
351df4b2 | 2108 | |
9850cf4a | 2109 | f2fs_bug_on(sbi, (new_vblocks >> (sizeof(unsigned short) << 3) || |
351df4b2 JK |
2110 | (new_vblocks > sbi->blocks_per_seg))); |
2111 | ||
2112 | se->valid_blocks = new_vblocks; | |
a1f72ac2 CY |
2113 | se->mtime = get_mtime(sbi, false); |
2114 | if (se->mtime > SIT_I(sbi)->max_mtime) | |
2115 | SIT_I(sbi)->max_mtime = se->mtime; | |
351df4b2 JK |
2116 | |
2117 | /* Update valid block bitmap */ | |
2118 | if (del > 0) { | |
6415fedc | 2119 | exist = f2fs_test_and_set_bit(offset, se->cur_valid_map); |
355e7891 | 2120 | #ifdef CONFIG_F2FS_CHECK_FS |
6415fedc YS |
2121 | mir_exist = f2fs_test_and_set_bit(offset, |
2122 | se->cur_valid_map_mir); | |
2123 | if (unlikely(exist != mir_exist)) { | |
2124 | f2fs_msg(sbi->sb, KERN_ERR, "Inconsistent error " | |
2125 | "when setting bitmap, blk:%u, old bit:%d", | |
2126 | blkaddr, exist); | |
05796763 | 2127 | f2fs_bug_on(sbi, 1); |
6415fedc | 2128 | } |
355e7891 | 2129 | #endif |
6415fedc YS |
2130 | if (unlikely(exist)) { |
2131 | f2fs_msg(sbi->sb, KERN_ERR, | |
2132 | "Bitmap was wrongly set, blk:%u", blkaddr); | |
2133 | f2fs_bug_on(sbi, 1); | |
35ee82ca YS |
2134 | se->valid_blocks--; |
2135 | del = 0; | |
355e7891 | 2136 | } |
6415fedc | 2137 | |
7d20c8ab | 2138 | if (!f2fs_test_and_set_bit(offset, se->discard_map)) |
a66cdd98 | 2139 | sbi->discard_blks--; |
720037f9 JK |
2140 | |
2141 | /* don't overwrite by SSR to keep node chain */ | |
4354994f DR |
2142 | if (IS_NODESEG(se->type) && |
2143 | !is_sbi_flag_set(sbi, SBI_CP_DISABLED)) { | |
720037f9 JK |
2144 | if (!f2fs_test_and_set_bit(offset, se->ckpt_valid_map)) |
2145 | se->ckpt_valid_blocks++; | |
2146 | } | |
351df4b2 | 2147 | } else { |
6415fedc | 2148 | exist = f2fs_test_and_clear_bit(offset, se->cur_valid_map); |
355e7891 | 2149 | #ifdef CONFIG_F2FS_CHECK_FS |
6415fedc YS |
2150 | mir_exist = f2fs_test_and_clear_bit(offset, |
2151 | se->cur_valid_map_mir); | |
2152 | if (unlikely(exist != mir_exist)) { | |
2153 | f2fs_msg(sbi->sb, KERN_ERR, "Inconsistent error " | |
2154 | "when clearing bitmap, blk:%u, old bit:%d", | |
2155 | blkaddr, exist); | |
05796763 | 2156 | f2fs_bug_on(sbi, 1); |
6415fedc | 2157 | } |
355e7891 | 2158 | #endif |
6415fedc YS |
2159 | if (unlikely(!exist)) { |
2160 | f2fs_msg(sbi->sb, KERN_ERR, | |
2161 | "Bitmap was wrongly cleared, blk:%u", blkaddr); | |
2162 | f2fs_bug_on(sbi, 1); | |
35ee82ca YS |
2163 | se->valid_blocks++; |
2164 | del = 0; | |
4354994f DR |
2165 | } else if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { |
2166 | /* | |
2167 | * If checkpoints are off, we must not reuse data that | |
2168 | * was used in the previous checkpoint. If it was used | |
2169 | * before, we must track that to know how much space we | |
2170 | * really have. | |
2171 | */ | |
c9c8ed50 CY |
2172 | if (f2fs_test_bit(offset, se->ckpt_valid_map)) { |
2173 | spin_lock(&sbi->stat_lock); | |
4354994f | 2174 | sbi->unusable_block_count++; |
c9c8ed50 CY |
2175 | spin_unlock(&sbi->stat_lock); |
2176 | } | |
355e7891 | 2177 | } |
6415fedc | 2178 | |
7d20c8ab | 2179 | if (f2fs_test_and_clear_bit(offset, se->discard_map)) |
a66cdd98 | 2180 | sbi->discard_blks++; |
351df4b2 JK |
2181 | } |
2182 | if (!f2fs_test_bit(offset, se->ckpt_valid_map)) | |
2183 | se->ckpt_valid_blocks += del; | |
2184 | ||
2185 | __mark_sit_entry_dirty(sbi, segno); | |
2186 | ||
2187 | /* update total number of valid blocks to be written in ckpt area */ | |
2188 | SIT_I(sbi)->written_valid_blocks += del; | |
2189 | ||
2c70c5e3 | 2190 | if (__is_large_section(sbi)) |
351df4b2 JK |
2191 | get_sec_entry(sbi, segno)->valid_blocks += del; |
2192 | } | |
2193 | ||
4d57b86d | 2194 | void f2fs_invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr) |
351df4b2 JK |
2195 | { |
2196 | unsigned int segno = GET_SEGNO(sbi, addr); | |
2197 | struct sit_info *sit_i = SIT_I(sbi); | |
2198 | ||
9850cf4a | 2199 | f2fs_bug_on(sbi, addr == NULL_ADDR); |
351df4b2 JK |
2200 | if (addr == NEW_ADDR) |
2201 | return; | |
2202 | ||
6aa58d8a CY |
2203 | invalidate_mapping_pages(META_MAPPING(sbi), addr, addr); |
2204 | ||
351df4b2 | 2205 | /* add it into sit main buffer */ |
3d26fa6b | 2206 | down_write(&sit_i->sentry_lock); |
351df4b2 JK |
2207 | |
2208 | update_sit_entry(sbi, addr, -1); | |
2209 | ||
2210 | /* add it into dirty seglist */ | |
2211 | locate_dirty_segment(sbi, segno); | |
2212 | ||
3d26fa6b | 2213 | up_write(&sit_i->sentry_lock); |
351df4b2 JK |
2214 | } |
2215 | ||
4d57b86d | 2216 | bool f2fs_is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr) |
6e2c64ad JK |
2217 | { |
2218 | struct sit_info *sit_i = SIT_I(sbi); | |
2219 | unsigned int segno, offset; | |
2220 | struct seg_entry *se; | |
2221 | bool is_cp = false; | |
2222 | ||
93770ab7 | 2223 | if (!__is_valid_data_blkaddr(blkaddr)) |
6e2c64ad JK |
2224 | return true; |
2225 | ||
3d26fa6b | 2226 | down_read(&sit_i->sentry_lock); |
6e2c64ad JK |
2227 | |
2228 | segno = GET_SEGNO(sbi, blkaddr); | |
2229 | se = get_seg_entry(sbi, segno); | |
2230 | offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); | |
2231 | ||
2232 | if (f2fs_test_bit(offset, se->ckpt_valid_map)) | |
2233 | is_cp = true; | |
2234 | ||
3d26fa6b | 2235 | up_read(&sit_i->sentry_lock); |
6e2c64ad JK |
2236 | |
2237 | return is_cp; | |
2238 | } | |
2239 | ||
0a8165d7 | 2240 | /* |
351df4b2 JK |
2241 | * This function should be resided under the curseg_mutex lock |
2242 | */ | |
2243 | static void __add_sum_entry(struct f2fs_sb_info *sbi, int type, | |
e79efe3b | 2244 | struct f2fs_summary *sum) |
351df4b2 JK |
2245 | { |
2246 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2247 | void *addr = curseg->sum_blk; | |
e79efe3b | 2248 | addr += curseg->next_blkoff * sizeof(struct f2fs_summary); |
351df4b2 | 2249 | memcpy(addr, sum, sizeof(struct f2fs_summary)); |
351df4b2 JK |
2250 | } |
2251 | ||
0a8165d7 | 2252 | /* |
351df4b2 JK |
2253 | * Calculate the number of current summary pages for writing |
2254 | */ | |
4d57b86d | 2255 | int f2fs_npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra) |
351df4b2 | 2256 | { |
351df4b2 | 2257 | int valid_sum_count = 0; |
9a47938b | 2258 | int i, sum_in_page; |
351df4b2 JK |
2259 | |
2260 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
2261 | if (sbi->ckpt->alloc_type[i] == SSR) | |
2262 | valid_sum_count += sbi->blocks_per_seg; | |
3fa06d7b CY |
2263 | else { |
2264 | if (for_ra) | |
2265 | valid_sum_count += le16_to_cpu( | |
2266 | F2FS_CKPT(sbi)->cur_data_blkoff[i]); | |
2267 | else | |
2268 | valid_sum_count += curseg_blkoff(sbi, i); | |
2269 | } | |
351df4b2 JK |
2270 | } |
2271 | ||
09cbfeaf | 2272 | sum_in_page = (PAGE_SIZE - 2 * SUM_JOURNAL_SIZE - |
9a47938b FL |
2273 | SUM_FOOTER_SIZE) / SUMMARY_SIZE; |
2274 | if (valid_sum_count <= sum_in_page) | |
351df4b2 | 2275 | return 1; |
9a47938b | 2276 | else if ((valid_sum_count - sum_in_page) <= |
09cbfeaf | 2277 | (PAGE_SIZE - SUM_FOOTER_SIZE) / SUMMARY_SIZE) |
351df4b2 JK |
2278 | return 2; |
2279 | return 3; | |
2280 | } | |
2281 | ||
0a8165d7 | 2282 | /* |
351df4b2 JK |
2283 | * Caller should put this summary page |
2284 | */ | |
4d57b86d | 2285 | struct page *f2fs_get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno) |
351df4b2 | 2286 | { |
7735730d | 2287 | return f2fs_get_meta_page_nofail(sbi, GET_SUM_BLOCK(sbi, segno)); |
351df4b2 JK |
2288 | } |
2289 | ||
4d57b86d CY |
2290 | void f2fs_update_meta_page(struct f2fs_sb_info *sbi, |
2291 | void *src, block_t blk_addr) | |
351df4b2 | 2292 | { |
4d57b86d | 2293 | struct page *page = f2fs_grab_meta_page(sbi, blk_addr); |
381722d2 | 2294 | |
0537b811 | 2295 | memcpy(page_address(page), src, PAGE_SIZE); |
351df4b2 JK |
2296 | set_page_dirty(page); |
2297 | f2fs_put_page(page, 1); | |
2298 | } | |
2299 | ||
381722d2 CY |
2300 | static void write_sum_page(struct f2fs_sb_info *sbi, |
2301 | struct f2fs_summary_block *sum_blk, block_t blk_addr) | |
2302 | { | |
4d57b86d | 2303 | f2fs_update_meta_page(sbi, (void *)sum_blk, blk_addr); |
381722d2 CY |
2304 | } |
2305 | ||
b7ad7512 CY |
2306 | static void write_current_sum_page(struct f2fs_sb_info *sbi, |
2307 | int type, block_t blk_addr) | |
2308 | { | |
2309 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
4d57b86d | 2310 | struct page *page = f2fs_grab_meta_page(sbi, blk_addr); |
b7ad7512 CY |
2311 | struct f2fs_summary_block *src = curseg->sum_blk; |
2312 | struct f2fs_summary_block *dst; | |
2313 | ||
2314 | dst = (struct f2fs_summary_block *)page_address(page); | |
81114baa | 2315 | memset(dst, 0, PAGE_SIZE); |
b7ad7512 CY |
2316 | |
2317 | mutex_lock(&curseg->curseg_mutex); | |
2318 | ||
2319 | down_read(&curseg->journal_rwsem); | |
2320 | memcpy(&dst->journal, curseg->journal, SUM_JOURNAL_SIZE); | |
2321 | up_read(&curseg->journal_rwsem); | |
2322 | ||
2323 | memcpy(dst->entries, src->entries, SUM_ENTRY_SIZE); | |
2324 | memcpy(&dst->footer, &src->footer, SUM_FOOTER_SIZE); | |
2325 | ||
2326 | mutex_unlock(&curseg->curseg_mutex); | |
2327 | ||
2328 | set_page_dirty(page); | |
2329 | f2fs_put_page(page, 1); | |
2330 | } | |
2331 | ||
a7881893 JK |
2332 | static int is_next_segment_free(struct f2fs_sb_info *sbi, int type) |
2333 | { | |
2334 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2335 | unsigned int segno = curseg->segno + 1; | |
2336 | struct free_segmap_info *free_i = FREE_I(sbi); | |
2337 | ||
2338 | if (segno < MAIN_SEGS(sbi) && segno % sbi->segs_per_sec) | |
2339 | return !test_bit(segno, free_i->free_segmap); | |
2340 | return 0; | |
2341 | } | |
2342 | ||
0a8165d7 | 2343 | /* |
351df4b2 JK |
2344 | * Find a new segment from the free segments bitmap to right order |
2345 | * This function should be returned with success, otherwise BUG | |
2346 | */ | |
2347 | static void get_new_segment(struct f2fs_sb_info *sbi, | |
2348 | unsigned int *newseg, bool new_sec, int dir) | |
2349 | { | |
2350 | struct free_segmap_info *free_i = FREE_I(sbi); | |
351df4b2 | 2351 | unsigned int segno, secno, zoneno; |
7cd8558b | 2352 | unsigned int total_zones = MAIN_SECS(sbi) / sbi->secs_per_zone; |
4ddb1a4d JK |
2353 | unsigned int hint = GET_SEC_FROM_SEG(sbi, *newseg); |
2354 | unsigned int old_zoneno = GET_ZONE_FROM_SEG(sbi, *newseg); | |
351df4b2 JK |
2355 | unsigned int left_start = hint; |
2356 | bool init = true; | |
2357 | int go_left = 0; | |
2358 | int i; | |
2359 | ||
1a118ccf | 2360 | spin_lock(&free_i->segmap_lock); |
351df4b2 JK |
2361 | |
2362 | if (!new_sec && ((*newseg + 1) % sbi->segs_per_sec)) { | |
2363 | segno = find_next_zero_bit(free_i->free_segmap, | |
4ddb1a4d JK |
2364 | GET_SEG_FROM_SEC(sbi, hint + 1), *newseg + 1); |
2365 | if (segno < GET_SEG_FROM_SEC(sbi, hint + 1)) | |
351df4b2 JK |
2366 | goto got_it; |
2367 | } | |
2368 | find_other_zone: | |
7cd8558b JK |
2369 | secno = find_next_zero_bit(free_i->free_secmap, MAIN_SECS(sbi), hint); |
2370 | if (secno >= MAIN_SECS(sbi)) { | |
351df4b2 JK |
2371 | if (dir == ALLOC_RIGHT) { |
2372 | secno = find_next_zero_bit(free_i->free_secmap, | |
7cd8558b JK |
2373 | MAIN_SECS(sbi), 0); |
2374 | f2fs_bug_on(sbi, secno >= MAIN_SECS(sbi)); | |
351df4b2 JK |
2375 | } else { |
2376 | go_left = 1; | |
2377 | left_start = hint - 1; | |
2378 | } | |
2379 | } | |
2380 | if (go_left == 0) | |
2381 | goto skip_left; | |
2382 | ||
2383 | while (test_bit(left_start, free_i->free_secmap)) { | |
2384 | if (left_start > 0) { | |
2385 | left_start--; | |
2386 | continue; | |
2387 | } | |
2388 | left_start = find_next_zero_bit(free_i->free_secmap, | |
7cd8558b JK |
2389 | MAIN_SECS(sbi), 0); |
2390 | f2fs_bug_on(sbi, left_start >= MAIN_SECS(sbi)); | |
351df4b2 JK |
2391 | break; |
2392 | } | |
2393 | secno = left_start; | |
2394 | skip_left: | |
4ddb1a4d JK |
2395 | segno = GET_SEG_FROM_SEC(sbi, secno); |
2396 | zoneno = GET_ZONE_FROM_SEC(sbi, secno); | |
351df4b2 JK |
2397 | |
2398 | /* give up on finding another zone */ | |
2399 | if (!init) | |
2400 | goto got_it; | |
2401 | if (sbi->secs_per_zone == 1) | |
2402 | goto got_it; | |
2403 | if (zoneno == old_zoneno) | |
2404 | goto got_it; | |
2405 | if (dir == ALLOC_LEFT) { | |
2406 | if (!go_left && zoneno + 1 >= total_zones) | |
2407 | goto got_it; | |
2408 | if (go_left && zoneno == 0) | |
2409 | goto got_it; | |
2410 | } | |
2411 | for (i = 0; i < NR_CURSEG_TYPE; i++) | |
2412 | if (CURSEG_I(sbi, i)->zone == zoneno) | |
2413 | break; | |
2414 | ||
2415 | if (i < NR_CURSEG_TYPE) { | |
2416 | /* zone is in user, try another */ | |
2417 | if (go_left) | |
2418 | hint = zoneno * sbi->secs_per_zone - 1; | |
2419 | else if (zoneno + 1 >= total_zones) | |
2420 | hint = 0; | |
2421 | else | |
2422 | hint = (zoneno + 1) * sbi->secs_per_zone; | |
2423 | init = false; | |
2424 | goto find_other_zone; | |
2425 | } | |
2426 | got_it: | |
2427 | /* set it as dirty segment in free segmap */ | |
9850cf4a | 2428 | f2fs_bug_on(sbi, test_bit(segno, free_i->free_segmap)); |
351df4b2 JK |
2429 | __set_inuse(sbi, segno); |
2430 | *newseg = segno; | |
1a118ccf | 2431 | spin_unlock(&free_i->segmap_lock); |
351df4b2 JK |
2432 | } |
2433 | ||
2434 | static void reset_curseg(struct f2fs_sb_info *sbi, int type, int modified) | |
2435 | { | |
2436 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2437 | struct summary_footer *sum_footer; | |
2438 | ||
2439 | curseg->segno = curseg->next_segno; | |
4ddb1a4d | 2440 | curseg->zone = GET_ZONE_FROM_SEG(sbi, curseg->segno); |
351df4b2 JK |
2441 | curseg->next_blkoff = 0; |
2442 | curseg->next_segno = NULL_SEGNO; | |
2443 | ||
2444 | sum_footer = &(curseg->sum_blk->footer); | |
2445 | memset(sum_footer, 0, sizeof(struct summary_footer)); | |
2446 | if (IS_DATASEG(type)) | |
2447 | SET_SUM_TYPE(sum_footer, SUM_TYPE_DATA); | |
2448 | if (IS_NODESEG(type)) | |
2449 | SET_SUM_TYPE(sum_footer, SUM_TYPE_NODE); | |
2450 | __set_sit_entry_type(sbi, type, curseg->segno, modified); | |
2451 | } | |
2452 | ||
7a20b8a6 JK |
2453 | static unsigned int __get_next_segno(struct f2fs_sb_info *sbi, int type) |
2454 | { | |
a7881893 | 2455 | /* if segs_per_sec is large than 1, we need to keep original policy. */ |
2c70c5e3 | 2456 | if (__is_large_section(sbi)) |
a7881893 JK |
2457 | return CURSEG_I(sbi, type)->segno; |
2458 | ||
4354994f DR |
2459 | if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) |
2460 | return 0; | |
2461 | ||
b94929d9 YS |
2462 | if (test_opt(sbi, NOHEAP) && |
2463 | (type == CURSEG_HOT_DATA || IS_NODESEG(type))) | |
7a20b8a6 JK |
2464 | return 0; |
2465 | ||
e066b83c JK |
2466 | if (SIT_I(sbi)->last_victim[ALLOC_NEXT]) |
2467 | return SIT_I(sbi)->last_victim[ALLOC_NEXT]; | |
07939627 JK |
2468 | |
2469 | /* find segments from 0 to reuse freed segments */ | |
63189b78 | 2470 | if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE) |
07939627 JK |
2471 | return 0; |
2472 | ||
7a20b8a6 JK |
2473 | return CURSEG_I(sbi, type)->segno; |
2474 | } | |
2475 | ||
0a8165d7 | 2476 | /* |
351df4b2 JK |
2477 | * Allocate a current working segment. |
2478 | * This function always allocates a free segment in LFS manner. | |
2479 | */ | |
2480 | static void new_curseg(struct f2fs_sb_info *sbi, int type, bool new_sec) | |
2481 | { | |
2482 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2483 | unsigned int segno = curseg->segno; | |
2484 | int dir = ALLOC_LEFT; | |
2485 | ||
2486 | write_sum_page(sbi, curseg->sum_blk, | |
81fb5e87 | 2487 | GET_SUM_BLOCK(sbi, segno)); |
351df4b2 JK |
2488 | if (type == CURSEG_WARM_DATA || type == CURSEG_COLD_DATA) |
2489 | dir = ALLOC_RIGHT; | |
2490 | ||
2491 | if (test_opt(sbi, NOHEAP)) | |
2492 | dir = ALLOC_RIGHT; | |
2493 | ||
7a20b8a6 | 2494 | segno = __get_next_segno(sbi, type); |
351df4b2 JK |
2495 | get_new_segment(sbi, &segno, new_sec, dir); |
2496 | curseg->next_segno = segno; | |
2497 | reset_curseg(sbi, type, 1); | |
2498 | curseg->alloc_type = LFS; | |
2499 | } | |
2500 | ||
2501 | static void __next_free_blkoff(struct f2fs_sb_info *sbi, | |
2502 | struct curseg_info *seg, block_t start) | |
2503 | { | |
2504 | struct seg_entry *se = get_seg_entry(sbi, seg->segno); | |
e81c93cf | 2505 | int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long); |
60a3b782 | 2506 | unsigned long *target_map = SIT_I(sbi)->tmp_map; |
e81c93cf CL |
2507 | unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map; |
2508 | unsigned long *cur_map = (unsigned long *)se->cur_valid_map; | |
2509 | int i, pos; | |
2510 | ||
2511 | for (i = 0; i < entries; i++) | |
2512 | target_map[i] = ckpt_map[i] | cur_map[i]; | |
2513 | ||
2514 | pos = __find_rev_next_zero_bit(target_map, sbi->blocks_per_seg, start); | |
2515 | ||
2516 | seg->next_blkoff = pos; | |
351df4b2 JK |
2517 | } |
2518 | ||
0a8165d7 | 2519 | /* |
351df4b2 JK |
2520 | * If a segment is written by LFS manner, next block offset is just obtained |
2521 | * by increasing the current block offset. However, if a segment is written by | |
2522 | * SSR manner, next block offset obtained by calling __next_free_blkoff | |
2523 | */ | |
2524 | static void __refresh_next_blkoff(struct f2fs_sb_info *sbi, | |
2525 | struct curseg_info *seg) | |
2526 | { | |
2527 | if (seg->alloc_type == SSR) | |
2528 | __next_free_blkoff(sbi, seg, seg->next_blkoff + 1); | |
2529 | else | |
2530 | seg->next_blkoff++; | |
2531 | } | |
2532 | ||
0a8165d7 | 2533 | /* |
e1c42045 | 2534 | * This function always allocates a used segment(from dirty seglist) by SSR |
351df4b2 JK |
2535 | * manner, so it should recover the existing segment information of valid blocks |
2536 | */ | |
025d63a4 | 2537 | static void change_curseg(struct f2fs_sb_info *sbi, int type) |
351df4b2 JK |
2538 | { |
2539 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
2540 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2541 | unsigned int new_segno = curseg->next_segno; | |
2542 | struct f2fs_summary_block *sum_node; | |
2543 | struct page *sum_page; | |
2544 | ||
2545 | write_sum_page(sbi, curseg->sum_blk, | |
2546 | GET_SUM_BLOCK(sbi, curseg->segno)); | |
2547 | __set_test_and_inuse(sbi, new_segno); | |
2548 | ||
2549 | mutex_lock(&dirty_i->seglist_lock); | |
2550 | __remove_dirty_segment(sbi, new_segno, PRE); | |
2551 | __remove_dirty_segment(sbi, new_segno, DIRTY); | |
2552 | mutex_unlock(&dirty_i->seglist_lock); | |
2553 | ||
2554 | reset_curseg(sbi, type, 1); | |
2555 | curseg->alloc_type = SSR; | |
2556 | __next_free_blkoff(sbi, curseg, 0); | |
2557 | ||
4d57b86d | 2558 | sum_page = f2fs_get_sum_page(sbi, new_segno); |
edc55aaf | 2559 | f2fs_bug_on(sbi, IS_ERR(sum_page)); |
025d63a4 CY |
2560 | sum_node = (struct f2fs_summary_block *)page_address(sum_page); |
2561 | memcpy(curseg->sum_blk, sum_node, SUM_ENTRY_SIZE); | |
2562 | f2fs_put_page(sum_page, 1); | |
351df4b2 JK |
2563 | } |
2564 | ||
43727527 JK |
2565 | static int get_ssr_segment(struct f2fs_sb_info *sbi, int type) |
2566 | { | |
2567 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2568 | const struct victim_selection *v_ops = DIRTY_I(sbi)->v_ops; | |
e066b83c | 2569 | unsigned segno = NULL_SEGNO; |
d27c3d89 CY |
2570 | int i, cnt; |
2571 | bool reversed = false; | |
c192f7a4 | 2572 | |
4d57b86d | 2573 | /* f2fs_need_SSR() already forces to do this */ |
e066b83c JK |
2574 | if (v_ops->get_victim(sbi, &segno, BG_GC, type, SSR)) { |
2575 | curseg->next_segno = segno; | |
c192f7a4 | 2576 | return 1; |
e066b83c | 2577 | } |
43727527 | 2578 | |
70d625cb JK |
2579 | /* For node segments, let's do SSR more intensively */ |
2580 | if (IS_NODESEG(type)) { | |
d27c3d89 CY |
2581 | if (type >= CURSEG_WARM_NODE) { |
2582 | reversed = true; | |
2583 | i = CURSEG_COLD_NODE; | |
2584 | } else { | |
2585 | i = CURSEG_HOT_NODE; | |
2586 | } | |
2587 | cnt = NR_CURSEG_NODE_TYPE; | |
70d625cb | 2588 | } else { |
d27c3d89 CY |
2589 | if (type >= CURSEG_WARM_DATA) { |
2590 | reversed = true; | |
2591 | i = CURSEG_COLD_DATA; | |
2592 | } else { | |
2593 | i = CURSEG_HOT_DATA; | |
2594 | } | |
2595 | cnt = NR_CURSEG_DATA_TYPE; | |
70d625cb | 2596 | } |
43727527 | 2597 | |
d27c3d89 | 2598 | for (; cnt-- > 0; reversed ? i-- : i++) { |
c192f7a4 JK |
2599 | if (i == type) |
2600 | continue; | |
e066b83c JK |
2601 | if (v_ops->get_victim(sbi, &segno, BG_GC, i, SSR)) { |
2602 | curseg->next_segno = segno; | |
43727527 | 2603 | return 1; |
e066b83c | 2604 | } |
c192f7a4 | 2605 | } |
4354994f DR |
2606 | |
2607 | /* find valid_blocks=0 in dirty list */ | |
2608 | if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { | |
2609 | segno = get_free_segment(sbi); | |
2610 | if (segno != NULL_SEGNO) { | |
2611 | curseg->next_segno = segno; | |
2612 | return 1; | |
2613 | } | |
2614 | } | |
43727527 JK |
2615 | return 0; |
2616 | } | |
2617 | ||
351df4b2 JK |
2618 | /* |
2619 | * flush out current segment and replace it with new segment | |
2620 | * This function should be returned with success, otherwise BUG | |
2621 | */ | |
2622 | static void allocate_segment_by_default(struct f2fs_sb_info *sbi, | |
2623 | int type, bool force) | |
2624 | { | |
a7881893 JK |
2625 | struct curseg_info *curseg = CURSEG_I(sbi, type); |
2626 | ||
7b405275 | 2627 | if (force) |
351df4b2 | 2628 | new_curseg(sbi, type, true); |
5b6c6be2 JK |
2629 | else if (!is_set_ckpt_flags(sbi, CP_CRC_RECOVERY_FLAG) && |
2630 | type == CURSEG_WARM_NODE) | |
351df4b2 | 2631 | new_curseg(sbi, type, false); |
4354994f DR |
2632 | else if (curseg->alloc_type == LFS && is_next_segment_free(sbi, type) && |
2633 | likely(!is_sbi_flag_set(sbi, SBI_CP_DISABLED))) | |
a7881893 | 2634 | new_curseg(sbi, type, false); |
4d57b86d | 2635 | else if (f2fs_need_SSR(sbi) && get_ssr_segment(sbi, type)) |
025d63a4 | 2636 | change_curseg(sbi, type); |
351df4b2 JK |
2637 | else |
2638 | new_curseg(sbi, type, false); | |
dcdfff65 | 2639 | |
a7881893 | 2640 | stat_inc_seg_type(sbi, curseg); |
351df4b2 JK |
2641 | } |
2642 | ||
4d57b86d | 2643 | void f2fs_allocate_new_segments(struct f2fs_sb_info *sbi) |
351df4b2 | 2644 | { |
6ae1be13 JK |
2645 | struct curseg_info *curseg; |
2646 | unsigned int old_segno; | |
351df4b2 JK |
2647 | int i; |
2648 | ||
3d26fa6b CY |
2649 | down_write(&SIT_I(sbi)->sentry_lock); |
2650 | ||
6ae1be13 JK |
2651 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { |
2652 | curseg = CURSEG_I(sbi, i); | |
2653 | old_segno = curseg->segno; | |
2654 | SIT_I(sbi)->s_ops->allocate_segment(sbi, i, true); | |
2655 | locate_dirty_segment(sbi, old_segno); | |
2656 | } | |
3d26fa6b CY |
2657 | |
2658 | up_write(&SIT_I(sbi)->sentry_lock); | |
351df4b2 JK |
2659 | } |
2660 | ||
2661 | static const struct segment_allocation default_salloc_ops = { | |
2662 | .allocate_segment = allocate_segment_by_default, | |
2663 | }; | |
2664 | ||
4d57b86d CY |
2665 | bool f2fs_exist_trim_candidates(struct f2fs_sb_info *sbi, |
2666 | struct cp_control *cpc) | |
25290fa5 JK |
2667 | { |
2668 | __u64 trim_start = cpc->trim_start; | |
2669 | bool has_candidate = false; | |
2670 | ||
3d26fa6b | 2671 | down_write(&SIT_I(sbi)->sentry_lock); |
25290fa5 JK |
2672 | for (; cpc->trim_start <= cpc->trim_end; cpc->trim_start++) { |
2673 | if (add_discard_addrs(sbi, cpc, true)) { | |
2674 | has_candidate = true; | |
2675 | break; | |
2676 | } | |
2677 | } | |
3d26fa6b | 2678 | up_write(&SIT_I(sbi)->sentry_lock); |
25290fa5 JK |
2679 | |
2680 | cpc->trim_start = trim_start; | |
2681 | return has_candidate; | |
2682 | } | |
2683 | ||
01f9cf6d | 2684 | static unsigned int __issue_discard_cmd_range(struct f2fs_sb_info *sbi, |
9a997188 JK |
2685 | struct discard_policy *dpolicy, |
2686 | unsigned int start, unsigned int end) | |
2687 | { | |
2688 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
2689 | struct discard_cmd *prev_dc = NULL, *next_dc = NULL; | |
2690 | struct rb_node **insert_p = NULL, *insert_parent = NULL; | |
2691 | struct discard_cmd *dc; | |
2692 | struct blk_plug plug; | |
2693 | int issued; | |
01f9cf6d | 2694 | unsigned int trimmed = 0; |
9a997188 JK |
2695 | |
2696 | next: | |
2697 | issued = 0; | |
2698 | ||
2699 | mutex_lock(&dcc->cmd_lock); | |
67fce70b CY |
2700 | if (unlikely(dcc->rbtree_check)) |
2701 | f2fs_bug_on(sbi, !f2fs_check_rb_tree_consistence(sbi, | |
2702 | &dcc->root)); | |
9a997188 | 2703 | |
4d57b86d | 2704 | dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root, |
9a997188 JK |
2705 | NULL, start, |
2706 | (struct rb_entry **)&prev_dc, | |
2707 | (struct rb_entry **)&next_dc, | |
4dada3fd | 2708 | &insert_p, &insert_parent, true, NULL); |
9a997188 JK |
2709 | if (!dc) |
2710 | dc = next_dc; | |
2711 | ||
2712 | blk_start_plug(&plug); | |
2713 | ||
2714 | while (dc && dc->lstart <= end) { | |
2715 | struct rb_node *node; | |
6b9cb124 | 2716 | int err = 0; |
9a997188 JK |
2717 | |
2718 | if (dc->len < dpolicy->granularity) | |
2719 | goto skip; | |
2720 | ||
2721 | if (dc->state != D_PREP) { | |
2722 | list_move_tail(&dc->list, &dcc->fstrim_list); | |
2723 | goto skip; | |
2724 | } | |
2725 | ||
6b9cb124 | 2726 | err = __submit_discard_cmd(sbi, dpolicy, dc, &issued); |
9a997188 | 2727 | |
35ec7d57 | 2728 | if (issued >= dpolicy->max_requests) { |
9a997188 JK |
2729 | start = dc->lstart + dc->len; |
2730 | ||
6b9cb124 CY |
2731 | if (err) |
2732 | __remove_discard_cmd(sbi, dc); | |
2733 | ||
9a997188 JK |
2734 | blk_finish_plug(&plug); |
2735 | mutex_unlock(&dcc->cmd_lock); | |
01f9cf6d | 2736 | trimmed += __wait_all_discard_cmd(sbi, NULL); |
9a997188 JK |
2737 | congestion_wait(BLK_RW_ASYNC, HZ/50); |
2738 | goto next; | |
2739 | } | |
2740 | skip: | |
2741 | node = rb_next(&dc->rb_node); | |
6b9cb124 CY |
2742 | if (err) |
2743 | __remove_discard_cmd(sbi, dc); | |
9a997188 JK |
2744 | dc = rb_entry_safe(node, struct discard_cmd, rb_node); |
2745 | ||
2746 | if (fatal_signal_pending(current)) | |
2747 | break; | |
2748 | } | |
2749 | ||
2750 | blk_finish_plug(&plug); | |
2751 | mutex_unlock(&dcc->cmd_lock); | |
01f9cf6d CY |
2752 | |
2753 | return trimmed; | |
9a997188 JK |
2754 | } |
2755 | ||
4b2fecc8 JK |
2756 | int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range) |
2757 | { | |
f7ef9b83 JK |
2758 | __u64 start = F2FS_BYTES_TO_BLK(range->start); |
2759 | __u64 end = start + F2FS_BYTES_TO_BLK(range->len) - 1; | |
377224c4 | 2760 | unsigned int start_segno, end_segno; |
8412663d | 2761 | block_t start_block, end_block; |
4b2fecc8 | 2762 | struct cp_control cpc; |
78997b56 | 2763 | struct discard_policy dpolicy; |
0ea80512 | 2764 | unsigned long long trimmed = 0; |
c34f42e2 | 2765 | int err = 0; |
2c70c5e3 | 2766 | bool need_align = test_opt(sbi, LFS) && __is_large_section(sbi); |
4b2fecc8 | 2767 | |
836b5a63 | 2768 | if (start >= MAX_BLKADDR(sbi) || range->len < sbi->blocksize) |
4b2fecc8 JK |
2769 | return -EINVAL; |
2770 | ||
3f16ecd9 CY |
2771 | if (end < MAIN_BLKADDR(sbi)) |
2772 | goto out; | |
4b2fecc8 | 2773 | |
ed214a11 YH |
2774 | if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) { |
2775 | f2fs_msg(sbi->sb, KERN_WARNING, | |
2776 | "Found FS corruption, run fsck to fix."); | |
3d165dc3 | 2777 | return -EIO; |
ed214a11 YH |
2778 | } |
2779 | ||
4b2fecc8 | 2780 | /* start/end segment number in main_area */ |
7cd8558b JK |
2781 | start_segno = (start <= MAIN_BLKADDR(sbi)) ? 0 : GET_SEGNO(sbi, start); |
2782 | end_segno = (end >= MAX_BLKADDR(sbi)) ? MAIN_SEGS(sbi) - 1 : | |
2783 | GET_SEGNO(sbi, end); | |
ad6672bb YS |
2784 | if (need_align) { |
2785 | start_segno = rounddown(start_segno, sbi->segs_per_sec); | |
2786 | end_segno = roundup(end_segno + 1, sbi->segs_per_sec) - 1; | |
2787 | } | |
8412663d | 2788 | |
4b2fecc8 | 2789 | cpc.reason = CP_DISCARD; |
836b5a63 | 2790 | cpc.trim_minlen = max_t(__u64, 1, F2FS_BYTES_TO_BLK(range->minlen)); |
377224c4 CY |
2791 | cpc.trim_start = start_segno; |
2792 | cpc.trim_end = end_segno; | |
4b2fecc8 | 2793 | |
377224c4 CY |
2794 | if (sbi->discard_blks == 0) |
2795 | goto out; | |
74fa5f3d | 2796 | |
377224c4 | 2797 | mutex_lock(&sbi->gc_mutex); |
4d57b86d | 2798 | err = f2fs_write_checkpoint(sbi, &cpc); |
377224c4 CY |
2799 | mutex_unlock(&sbi->gc_mutex); |
2800 | if (err) | |
2801 | goto out; | |
8412663d | 2802 | |
e555da9f JK |
2803 | /* |
2804 | * We filed discard candidates, but actually we don't need to wait for | |
2805 | * all of them, since they'll be issued in idle time along with runtime | |
2806 | * discard option. User configuration looks like using runtime discard | |
2807 | * or periodic fstrim instead of it. | |
2808 | */ | |
7d20c8ab | 2809 | if (f2fs_realtime_discard_enable(sbi)) |
5a615492 JK |
2810 | goto out; |
2811 | ||
2812 | start_block = START_BLOCK(sbi, start_segno); | |
2813 | end_block = START_BLOCK(sbi, end_segno + 1); | |
2814 | ||
2815 | __init_discard_policy(sbi, &dpolicy, DPOLICY_FSTRIM, cpc.trim_minlen); | |
01f9cf6d CY |
2816 | trimmed = __issue_discard_cmd_range(sbi, &dpolicy, |
2817 | start_block, end_block); | |
5a615492 | 2818 | |
01f9cf6d | 2819 | trimmed += __wait_discard_cmd_range(sbi, &dpolicy, |
0ea80512 | 2820 | start_block, end_block); |
377224c4 | 2821 | out: |
6eae2694 CY |
2822 | if (!err) |
2823 | range->len = F2FS_BLK_TO_BYTES(trimmed); | |
c34f42e2 | 2824 | return err; |
4b2fecc8 JK |
2825 | } |
2826 | ||
351df4b2 JK |
2827 | static bool __has_curseg_space(struct f2fs_sb_info *sbi, int type) |
2828 | { | |
2829 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2830 | if (curseg->next_blkoff < sbi->blocks_per_seg) | |
2831 | return true; | |
2832 | return false; | |
2833 | } | |
2834 | ||
4d57b86d | 2835 | int f2fs_rw_hint_to_seg_type(enum rw_hint hint) |
4f0a03d3 HL |
2836 | { |
2837 | switch (hint) { | |
2838 | case WRITE_LIFE_SHORT: | |
2839 | return CURSEG_HOT_DATA; | |
2840 | case WRITE_LIFE_EXTREME: | |
2841 | return CURSEG_COLD_DATA; | |
2842 | default: | |
2843 | return CURSEG_WARM_DATA; | |
2844 | } | |
2845 | } | |
2846 | ||
0cdd3195 HL |
2847 | /* This returns write hints for each segment type. This hints will be |
2848 | * passed down to block layer. There are mapping tables which depend on | |
2849 | * the mount option 'whint_mode'. | |
2850 | * | |
2851 | * 1) whint_mode=off. F2FS only passes down WRITE_LIFE_NOT_SET. | |
2852 | * | |
2853 | * 2) whint_mode=user-based. F2FS tries to pass down hints given by users. | |
2854 | * | |
2855 | * User F2FS Block | |
2856 | * ---- ---- ----- | |
2857 | * META WRITE_LIFE_NOT_SET | |
2858 | * HOT_NODE " | |
2859 | * WARM_NODE " | |
2860 | * COLD_NODE " | |
2861 | * ioctl(COLD) COLD_DATA WRITE_LIFE_EXTREME | |
2862 | * extension list " " | |
2863 | * | |
2864 | * -- buffered io | |
2865 | * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME | |
2866 | * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT | |
2867 | * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET | |
2868 | * WRITE_LIFE_NONE " " | |
2869 | * WRITE_LIFE_MEDIUM " " | |
2870 | * WRITE_LIFE_LONG " " | |
2871 | * | |
2872 | * -- direct io | |
2873 | * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME | |
2874 | * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT | |
2875 | * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET | |
2876 | * WRITE_LIFE_NONE " WRITE_LIFE_NONE | |
2877 | * WRITE_LIFE_MEDIUM " WRITE_LIFE_MEDIUM | |
2878 | * WRITE_LIFE_LONG " WRITE_LIFE_LONG | |
2879 | * | |
f2e703f9 HL |
2880 | * 3) whint_mode=fs-based. F2FS passes down hints with its policy. |
2881 | * | |
2882 | * User F2FS Block | |
2883 | * ---- ---- ----- | |
2884 | * META WRITE_LIFE_MEDIUM; | |
2885 | * HOT_NODE WRITE_LIFE_NOT_SET | |
2886 | * WARM_NODE " | |
2887 | * COLD_NODE WRITE_LIFE_NONE | |
2888 | * ioctl(COLD) COLD_DATA WRITE_LIFE_EXTREME | |
2889 | * extension list " " | |
2890 | * | |
2891 | * -- buffered io | |
2892 | * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME | |
2893 | * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT | |
2894 | * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_LONG | |
2895 | * WRITE_LIFE_NONE " " | |
2896 | * WRITE_LIFE_MEDIUM " " | |
2897 | * WRITE_LIFE_LONG " " | |
2898 | * | |
2899 | * -- direct io | |
2900 | * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME | |
2901 | * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT | |
2902 | * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET | |
2903 | * WRITE_LIFE_NONE " WRITE_LIFE_NONE | |
2904 | * WRITE_LIFE_MEDIUM " WRITE_LIFE_MEDIUM | |
2905 | * WRITE_LIFE_LONG " WRITE_LIFE_LONG | |
0cdd3195 HL |
2906 | */ |
2907 | ||
4d57b86d | 2908 | enum rw_hint f2fs_io_type_to_rw_hint(struct f2fs_sb_info *sbi, |
0cdd3195 HL |
2909 | enum page_type type, enum temp_type temp) |
2910 | { | |
63189b78 | 2911 | if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER) { |
0cdd3195 | 2912 | if (type == DATA) { |
f2e703f9 | 2913 | if (temp == WARM) |
0cdd3195 | 2914 | return WRITE_LIFE_NOT_SET; |
f2e703f9 HL |
2915 | else if (temp == HOT) |
2916 | return WRITE_LIFE_SHORT; | |
2917 | else if (temp == COLD) | |
2918 | return WRITE_LIFE_EXTREME; | |
0cdd3195 HL |
2919 | } else { |
2920 | return WRITE_LIFE_NOT_SET; | |
2921 | } | |
63189b78 | 2922 | } else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS) { |
f2e703f9 HL |
2923 | if (type == DATA) { |
2924 | if (temp == WARM) | |
2925 | return WRITE_LIFE_LONG; | |
2926 | else if (temp == HOT) | |
2927 | return WRITE_LIFE_SHORT; | |
2928 | else if (temp == COLD) | |
2929 | return WRITE_LIFE_EXTREME; | |
2930 | } else if (type == NODE) { | |
2931 | if (temp == WARM || temp == HOT) | |
2932 | return WRITE_LIFE_NOT_SET; | |
2933 | else if (temp == COLD) | |
2934 | return WRITE_LIFE_NONE; | |
2935 | } else if (type == META) { | |
2936 | return WRITE_LIFE_MEDIUM; | |
2937 | } | |
0cdd3195 | 2938 | } |
f2e703f9 | 2939 | return WRITE_LIFE_NOT_SET; |
0cdd3195 HL |
2940 | } |
2941 | ||
81377bd6 | 2942 | static int __get_segment_type_2(struct f2fs_io_info *fio) |
351df4b2 | 2943 | { |
81377bd6 | 2944 | if (fio->type == DATA) |
351df4b2 JK |
2945 | return CURSEG_HOT_DATA; |
2946 | else | |
2947 | return CURSEG_HOT_NODE; | |
2948 | } | |
2949 | ||
81377bd6 | 2950 | static int __get_segment_type_4(struct f2fs_io_info *fio) |
351df4b2 | 2951 | { |
81377bd6 JK |
2952 | if (fio->type == DATA) { |
2953 | struct inode *inode = fio->page->mapping->host; | |
351df4b2 JK |
2954 | |
2955 | if (S_ISDIR(inode->i_mode)) | |
2956 | return CURSEG_HOT_DATA; | |
2957 | else | |
2958 | return CURSEG_COLD_DATA; | |
2959 | } else { | |
81377bd6 | 2960 | if (IS_DNODE(fio->page) && is_cold_node(fio->page)) |
a344b9fd | 2961 | return CURSEG_WARM_NODE; |
351df4b2 JK |
2962 | else |
2963 | return CURSEG_COLD_NODE; | |
2964 | } | |
2965 | } | |
2966 | ||
81377bd6 | 2967 | static int __get_segment_type_6(struct f2fs_io_info *fio) |
351df4b2 | 2968 | { |
81377bd6 JK |
2969 | if (fio->type == DATA) { |
2970 | struct inode *inode = fio->page->mapping->host; | |
351df4b2 | 2971 | |
81377bd6 | 2972 | if (is_cold_data(fio->page) || file_is_cold(inode)) |
351df4b2 | 2973 | return CURSEG_COLD_DATA; |
b6a06cbb | 2974 | if (file_is_hot(inode) || |
b4c3ca8b | 2975 | is_inode_flag_set(inode, FI_HOT_DATA) || |
2079f115 CY |
2976 | f2fs_is_atomic_file(inode) || |
2977 | f2fs_is_volatile_file(inode)) | |
ef095d19 | 2978 | return CURSEG_HOT_DATA; |
4d57b86d | 2979 | return f2fs_rw_hint_to_seg_type(inode->i_write_hint); |
351df4b2 | 2980 | } else { |
81377bd6 JK |
2981 | if (IS_DNODE(fio->page)) |
2982 | return is_cold_node(fio->page) ? CURSEG_WARM_NODE : | |
351df4b2 | 2983 | CURSEG_HOT_NODE; |
ef095d19 | 2984 | return CURSEG_COLD_NODE; |
351df4b2 JK |
2985 | } |
2986 | } | |
2987 | ||
81377bd6 | 2988 | static int __get_segment_type(struct f2fs_io_info *fio) |
351df4b2 | 2989 | { |
a912b54d JK |
2990 | int type = 0; |
2991 | ||
63189b78 | 2992 | switch (F2FS_OPTION(fio->sbi).active_logs) { |
351df4b2 | 2993 | case 2: |
a912b54d JK |
2994 | type = __get_segment_type_2(fio); |
2995 | break; | |
351df4b2 | 2996 | case 4: |
a912b54d JK |
2997 | type = __get_segment_type_4(fio); |
2998 | break; | |
2999 | case 6: | |
3000 | type = __get_segment_type_6(fio); | |
3001 | break; | |
3002 | default: | |
3003 | f2fs_bug_on(fio->sbi, true); | |
351df4b2 | 3004 | } |
81377bd6 | 3005 | |
a912b54d JK |
3006 | if (IS_HOT(type)) |
3007 | fio->temp = HOT; | |
3008 | else if (IS_WARM(type)) | |
3009 | fio->temp = WARM; | |
3010 | else | |
3011 | fio->temp = COLD; | |
3012 | return type; | |
351df4b2 JK |
3013 | } |
3014 | ||
4d57b86d | 3015 | void f2fs_allocate_data_block(struct f2fs_sb_info *sbi, struct page *page, |
bfad7c2d | 3016 | block_t old_blkaddr, block_t *new_blkaddr, |
fb830fc5 CY |
3017 | struct f2fs_summary *sum, int type, |
3018 | struct f2fs_io_info *fio, bool add_list) | |
351df4b2 JK |
3019 | { |
3020 | struct sit_info *sit_i = SIT_I(sbi); | |
6ae1be13 | 3021 | struct curseg_info *curseg = CURSEG_I(sbi, type); |
351df4b2 | 3022 | |
2b60311d CY |
3023 | down_read(&SM_I(sbi)->curseg_lock); |
3024 | ||
351df4b2 | 3025 | mutex_lock(&curseg->curseg_mutex); |
3d26fa6b | 3026 | down_write(&sit_i->sentry_lock); |
351df4b2 JK |
3027 | |
3028 | *new_blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); | |
351df4b2 | 3029 | |
4e6a8d9b JK |
3030 | f2fs_wait_discard_bio(sbi, *new_blkaddr); |
3031 | ||
351df4b2 JK |
3032 | /* |
3033 | * __add_sum_entry should be resided under the curseg_mutex | |
3034 | * because, this function updates a summary entry in the | |
3035 | * current summary block. | |
3036 | */ | |
e79efe3b | 3037 | __add_sum_entry(sbi, type, sum); |
351df4b2 | 3038 | |
351df4b2 | 3039 | __refresh_next_blkoff(sbi, curseg); |
dcdfff65 JK |
3040 | |
3041 | stat_inc_block_count(sbi, curseg); | |
351df4b2 | 3042 | |
65f1b80b YS |
3043 | /* |
3044 | * SIT information should be updated before segment allocation, | |
3045 | * since SSR needs latest valid block information. | |
3046 | */ | |
3047 | update_sit_entry(sbi, *new_blkaddr, 1); | |
3048 | if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) | |
3049 | update_sit_entry(sbi, old_blkaddr, -1); | |
3050 | ||
c6f82fe9 JK |
3051 | if (!__has_curseg_space(sbi, type)) |
3052 | sit_i->s_ops->allocate_segment(sbi, type, false); | |
65f1b80b | 3053 | |
351df4b2 | 3054 | /* |
65f1b80b YS |
3055 | * segment dirty status should be updated after segment allocation, |
3056 | * so we just need to update status only one time after previous | |
3057 | * segment being closed. | |
351df4b2 | 3058 | */ |
65f1b80b YS |
3059 | locate_dirty_segment(sbi, GET_SEGNO(sbi, old_blkaddr)); |
3060 | locate_dirty_segment(sbi, GET_SEGNO(sbi, *new_blkaddr)); | |
5e443818 | 3061 | |
3d26fa6b | 3062 | up_write(&sit_i->sentry_lock); |
351df4b2 | 3063 | |
704956ec | 3064 | if (page && IS_NODESEG(type)) { |
351df4b2 JK |
3065 | fill_node_footer_blkaddr(page, NEXT_FREE_BLKADDR(sbi, curseg)); |
3066 | ||
704956ec CY |
3067 | f2fs_inode_chksum_set(sbi, page); |
3068 | } | |
3069 | ||
fb830fc5 CY |
3070 | if (add_list) { |
3071 | struct f2fs_bio_info *io; | |
3072 | ||
3073 | INIT_LIST_HEAD(&fio->list); | |
3074 | fio->in_list = true; | |
fe16efe6 | 3075 | fio->retry = false; |
fb830fc5 CY |
3076 | io = sbi->write_io[fio->type] + fio->temp; |
3077 | spin_lock(&io->io_lock); | |
3078 | list_add_tail(&fio->list, &io->io_list); | |
3079 | spin_unlock(&io->io_lock); | |
3080 | } | |
3081 | ||
bfad7c2d | 3082 | mutex_unlock(&curseg->curseg_mutex); |
2b60311d CY |
3083 | |
3084 | up_read(&SM_I(sbi)->curseg_lock); | |
bfad7c2d JK |
3085 | } |
3086 | ||
39d787be CY |
3087 | static void update_device_state(struct f2fs_io_info *fio) |
3088 | { | |
3089 | struct f2fs_sb_info *sbi = fio->sbi; | |
3090 | unsigned int devidx; | |
3091 | ||
0916878d | 3092 | if (!f2fs_is_multi_device(sbi)) |
39d787be CY |
3093 | return; |
3094 | ||
3095 | devidx = f2fs_target_device_index(sbi, fio->new_blkaddr); | |
3096 | ||
3097 | /* update device state for fsync */ | |
4d57b86d | 3098 | f2fs_set_dirty_device(sbi, fio->ino, devidx, FLUSH_INO); |
1228b482 CY |
3099 | |
3100 | /* update device state for checkpoint */ | |
3101 | if (!f2fs_test_bit(devidx, (char *)&sbi->dirty_device)) { | |
3102 | spin_lock(&sbi->dev_lock); | |
3103 | f2fs_set_bit(devidx, (char *)&sbi->dirty_device); | |
3104 | spin_unlock(&sbi->dev_lock); | |
3105 | } | |
39d787be CY |
3106 | } |
3107 | ||
05ca3632 | 3108 | static void do_write_page(struct f2fs_summary *sum, struct f2fs_io_info *fio) |
bfad7c2d | 3109 | { |
81377bd6 | 3110 | int type = __get_segment_type(fio); |
107a805d | 3111 | bool keep_order = (test_opt(fio->sbi, LFS) && type == CURSEG_COLD_DATA); |
bfad7c2d | 3112 | |
107a805d CY |
3113 | if (keep_order) |
3114 | down_read(&fio->sbi->io_order_lock); | |
0a595eba | 3115 | reallocate: |
4d57b86d | 3116 | f2fs_allocate_data_block(fio->sbi, fio->page, fio->old_blkaddr, |
fb830fc5 | 3117 | &fio->new_blkaddr, sum, type, fio, true); |
6aa58d8a CY |
3118 | if (GET_SEGNO(fio->sbi, fio->old_blkaddr) != NULL_SEGNO) |
3119 | invalidate_mapping_pages(META_MAPPING(fio->sbi), | |
3120 | fio->old_blkaddr, fio->old_blkaddr); | |
bfad7c2d | 3121 | |
351df4b2 | 3122 | /* writeout dirty page into bdev */ |
fe16efe6 CY |
3123 | f2fs_submit_page_write(fio); |
3124 | if (fio->retry) { | |
0a595eba JK |
3125 | fio->old_blkaddr = fio->new_blkaddr; |
3126 | goto reallocate; | |
3127 | } | |
fe16efe6 CY |
3128 | |
3129 | update_device_state(fio); | |
3130 | ||
107a805d CY |
3131 | if (keep_order) |
3132 | up_read(&fio->sbi->io_order_lock); | |
351df4b2 JK |
3133 | } |
3134 | ||
4d57b86d | 3135 | void f2fs_do_write_meta_page(struct f2fs_sb_info *sbi, struct page *page, |
b0af6d49 | 3136 | enum iostat_type io_type) |
351df4b2 | 3137 | { |
458e6197 | 3138 | struct f2fs_io_info fio = { |
05ca3632 | 3139 | .sbi = sbi, |
458e6197 | 3140 | .type = META, |
0cdd3195 | 3141 | .temp = HOT, |
04d328de | 3142 | .op = REQ_OP_WRITE, |
70fd7614 | 3143 | .op_flags = REQ_SYNC | REQ_META | REQ_PRIO, |
7a9d7548 CY |
3144 | .old_blkaddr = page->index, |
3145 | .new_blkaddr = page->index, | |
05ca3632 | 3146 | .page = page, |
4375a336 | 3147 | .encrypted_page = NULL, |
fb830fc5 | 3148 | .in_list = false, |
458e6197 JK |
3149 | }; |
3150 | ||
2b947003 | 3151 | if (unlikely(page->index >= MAIN_BLKADDR(sbi))) |
04d328de | 3152 | fio.op_flags &= ~REQ_META; |
2b947003 | 3153 | |
351df4b2 | 3154 | set_page_writeback(page); |
17c50035 | 3155 | ClearPageError(page); |
b9109b0e | 3156 | f2fs_submit_page_write(&fio); |
b0af6d49 | 3157 | |
b63e7be5 | 3158 | stat_inc_meta_count(sbi, page->index); |
b0af6d49 | 3159 | f2fs_update_iostat(sbi, io_type, F2FS_BLKSIZE); |
351df4b2 JK |
3160 | } |
3161 | ||
4d57b86d | 3162 | void f2fs_do_write_node_page(unsigned int nid, struct f2fs_io_info *fio) |
351df4b2 JK |
3163 | { |
3164 | struct f2fs_summary sum; | |
05ca3632 | 3165 | |
351df4b2 | 3166 | set_summary(&sum, nid, 0, 0); |
05ca3632 | 3167 | do_write_page(&sum, fio); |
b0af6d49 CY |
3168 | |
3169 | f2fs_update_iostat(fio->sbi, fio->io_type, F2FS_BLKSIZE); | |
351df4b2 JK |
3170 | } |
3171 | ||
4d57b86d CY |
3172 | void f2fs_outplace_write_data(struct dnode_of_data *dn, |
3173 | struct f2fs_io_info *fio) | |
351df4b2 | 3174 | { |
05ca3632 | 3175 | struct f2fs_sb_info *sbi = fio->sbi; |
351df4b2 | 3176 | struct f2fs_summary sum; |
351df4b2 | 3177 | |
9850cf4a | 3178 | f2fs_bug_on(sbi, dn->data_blkaddr == NULL_ADDR); |
7735730d | 3179 | set_summary(&sum, dn->nid, dn->ofs_in_node, fio->version); |
05ca3632 | 3180 | do_write_page(&sum, fio); |
f28b3434 | 3181 | f2fs_update_data_blkaddr(dn, fio->new_blkaddr); |
b0af6d49 CY |
3182 | |
3183 | f2fs_update_iostat(sbi, fio->io_type, F2FS_BLKSIZE); | |
351df4b2 JK |
3184 | } |
3185 | ||
4d57b86d | 3186 | int f2fs_inplace_write_data(struct f2fs_io_info *fio) |
351df4b2 | 3187 | { |
b0af6d49 | 3188 | int err; |
d21b0f23 | 3189 | struct f2fs_sb_info *sbi = fio->sbi; |
05573d6c | 3190 | unsigned int segno; |
b0af6d49 | 3191 | |
7a9d7548 | 3192 | fio->new_blkaddr = fio->old_blkaddr; |
0cdd3195 HL |
3193 | /* i/o temperature is needed for passing down write hints */ |
3194 | __get_segment_type(fio); | |
d21b0f23 | 3195 | |
05573d6c CY |
3196 | segno = GET_SEGNO(sbi, fio->new_blkaddr); |
3197 | ||
3198 | if (!IS_DATASEG(get_seg_entry(sbi, segno)->type)) { | |
3199 | set_sbi_flag(sbi, SBI_NEED_FSCK); | |
3200 | return -EFAULT; | |
3201 | } | |
d21b0f23 | 3202 | |
05ca3632 | 3203 | stat_inc_inplace_blocks(fio->sbi); |
b0af6d49 CY |
3204 | |
3205 | err = f2fs_submit_page_bio(fio); | |
e46f6bd8 | 3206 | if (!err) { |
39d787be | 3207 | update_device_state(fio); |
e46f6bd8 CY |
3208 | f2fs_update_iostat(fio->sbi, fio->io_type, F2FS_BLKSIZE); |
3209 | } | |
b0af6d49 CY |
3210 | |
3211 | return err; | |
351df4b2 JK |
3212 | } |
3213 | ||
2b60311d CY |
3214 | static inline int __f2fs_get_curseg(struct f2fs_sb_info *sbi, |
3215 | unsigned int segno) | |
3216 | { | |
3217 | int i; | |
3218 | ||
3219 | for (i = CURSEG_HOT_DATA; i < NO_CHECK_TYPE; i++) { | |
3220 | if (CURSEG_I(sbi, i)->segno == segno) | |
3221 | break; | |
3222 | } | |
3223 | return i; | |
3224 | } | |
3225 | ||
4d57b86d | 3226 | void f2fs_do_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum, |
19f106bc | 3227 | block_t old_blkaddr, block_t new_blkaddr, |
28bc106b | 3228 | bool recover_curseg, bool recover_newaddr) |
351df4b2 JK |
3229 | { |
3230 | struct sit_info *sit_i = SIT_I(sbi); | |
3231 | struct curseg_info *curseg; | |
3232 | unsigned int segno, old_cursegno; | |
3233 | struct seg_entry *se; | |
3234 | int type; | |
19f106bc | 3235 | unsigned short old_blkoff; |
351df4b2 JK |
3236 | |
3237 | segno = GET_SEGNO(sbi, new_blkaddr); | |
3238 | se = get_seg_entry(sbi, segno); | |
3239 | type = se->type; | |
3240 | ||
2b60311d CY |
3241 | down_write(&SM_I(sbi)->curseg_lock); |
3242 | ||
19f106bc CY |
3243 | if (!recover_curseg) { |
3244 | /* for recovery flow */ | |
3245 | if (se->valid_blocks == 0 && !IS_CURSEG(sbi, segno)) { | |
3246 | if (old_blkaddr == NULL_ADDR) | |
3247 | type = CURSEG_COLD_DATA; | |
3248 | else | |
3249 | type = CURSEG_WARM_DATA; | |
3250 | } | |
3251 | } else { | |
2b60311d CY |
3252 | if (IS_CURSEG(sbi, segno)) { |
3253 | /* se->type is volatile as SSR allocation */ | |
3254 | type = __f2fs_get_curseg(sbi, segno); | |
3255 | f2fs_bug_on(sbi, type == NO_CHECK_TYPE); | |
3256 | } else { | |
351df4b2 | 3257 | type = CURSEG_WARM_DATA; |
2b60311d | 3258 | } |
351df4b2 | 3259 | } |
19f106bc | 3260 | |
2c190504 | 3261 | f2fs_bug_on(sbi, !IS_DATASEG(type)); |
351df4b2 JK |
3262 | curseg = CURSEG_I(sbi, type); |
3263 | ||
3264 | mutex_lock(&curseg->curseg_mutex); | |
3d26fa6b | 3265 | down_write(&sit_i->sentry_lock); |
351df4b2 JK |
3266 | |
3267 | old_cursegno = curseg->segno; | |
19f106bc | 3268 | old_blkoff = curseg->next_blkoff; |
351df4b2 JK |
3269 | |
3270 | /* change the current segment */ | |
3271 | if (segno != curseg->segno) { | |
3272 | curseg->next_segno = segno; | |
025d63a4 | 3273 | change_curseg(sbi, type); |
351df4b2 JK |
3274 | } |
3275 | ||
491c0854 | 3276 | curseg->next_blkoff = GET_BLKOFF_FROM_SEG0(sbi, new_blkaddr); |
e79efe3b | 3277 | __add_sum_entry(sbi, type, sum); |
351df4b2 | 3278 | |
28bc106b | 3279 | if (!recover_curseg || recover_newaddr) |
6e2c64ad | 3280 | update_sit_entry(sbi, new_blkaddr, 1); |
6aa58d8a CY |
3281 | if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) { |
3282 | invalidate_mapping_pages(META_MAPPING(sbi), | |
3283 | old_blkaddr, old_blkaddr); | |
6e2c64ad | 3284 | update_sit_entry(sbi, old_blkaddr, -1); |
6aa58d8a | 3285 | } |
6e2c64ad JK |
3286 | |
3287 | locate_dirty_segment(sbi, GET_SEGNO(sbi, old_blkaddr)); | |
3288 | locate_dirty_segment(sbi, GET_SEGNO(sbi, new_blkaddr)); | |
3289 | ||
351df4b2 | 3290 | locate_dirty_segment(sbi, old_cursegno); |
351df4b2 | 3291 | |
19f106bc CY |
3292 | if (recover_curseg) { |
3293 | if (old_cursegno != curseg->segno) { | |
3294 | curseg->next_segno = old_cursegno; | |
025d63a4 | 3295 | change_curseg(sbi, type); |
19f106bc CY |
3296 | } |
3297 | curseg->next_blkoff = old_blkoff; | |
3298 | } | |
3299 | ||
3d26fa6b | 3300 | up_write(&sit_i->sentry_lock); |
351df4b2 | 3301 | mutex_unlock(&curseg->curseg_mutex); |
2b60311d | 3302 | up_write(&SM_I(sbi)->curseg_lock); |
351df4b2 JK |
3303 | } |
3304 | ||
528e3459 CY |
3305 | void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn, |
3306 | block_t old_addr, block_t new_addr, | |
28bc106b CY |
3307 | unsigned char version, bool recover_curseg, |
3308 | bool recover_newaddr) | |
528e3459 CY |
3309 | { |
3310 | struct f2fs_summary sum; | |
3311 | ||
3312 | set_summary(&sum, dn->nid, dn->ofs_in_node, version); | |
3313 | ||
4d57b86d | 3314 | f2fs_do_replace_block(sbi, &sum, old_addr, new_addr, |
28bc106b | 3315 | recover_curseg, recover_newaddr); |
528e3459 | 3316 | |
f28b3434 | 3317 | f2fs_update_data_blkaddr(dn, new_addr); |
528e3459 CY |
3318 | } |
3319 | ||
93dfe2ac | 3320 | void f2fs_wait_on_page_writeback(struct page *page, |
bae0ee7a | 3321 | enum page_type type, bool ordered, bool locked) |
93dfe2ac | 3322 | { |
93dfe2ac | 3323 | if (PageWriteback(page)) { |
4081363f JK |
3324 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); |
3325 | ||
bab475c5 | 3326 | f2fs_submit_merged_write_cond(sbi, NULL, page, 0, type); |
bae0ee7a | 3327 | if (ordered) { |
fec1d657 | 3328 | wait_on_page_writeback(page); |
bae0ee7a CY |
3329 | f2fs_bug_on(sbi, locked && PageWriteback(page)); |
3330 | } else { | |
fec1d657 | 3331 | wait_for_stable_page(page); |
bae0ee7a | 3332 | } |
93dfe2ac JK |
3333 | } |
3334 | } | |
3335 | ||
0ded69f6 | 3336 | void f2fs_wait_on_block_writeback(struct inode *inode, block_t blkaddr) |
08b39fbd | 3337 | { |
0ded69f6 | 3338 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
08b39fbd CY |
3339 | struct page *cpage; |
3340 | ||
0ded69f6 JK |
3341 | if (!f2fs_post_read_required(inode)) |
3342 | return; | |
3343 | ||
93770ab7 | 3344 | if (!__is_valid_data_blkaddr(blkaddr)) |
08b39fbd CY |
3345 | return; |
3346 | ||
08b39fbd CY |
3347 | cpage = find_lock_page(META_MAPPING(sbi), blkaddr); |
3348 | if (cpage) { | |
bae0ee7a | 3349 | f2fs_wait_on_page_writeback(cpage, DATA, true, true); |
08b39fbd CY |
3350 | f2fs_put_page(cpage, 1); |
3351 | } | |
3352 | } | |
3353 | ||
1e78e8bd ST |
3354 | void f2fs_wait_on_block_writeback_range(struct inode *inode, block_t blkaddr, |
3355 | block_t len) | |
3356 | { | |
3357 | block_t i; | |
3358 | ||
3359 | for (i = 0; i < len; i++) | |
3360 | f2fs_wait_on_block_writeback(inode, blkaddr + i); | |
3361 | } | |
3362 | ||
7735730d | 3363 | static int read_compacted_summaries(struct f2fs_sb_info *sbi) |
351df4b2 JK |
3364 | { |
3365 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
3366 | struct curseg_info *seg_i; | |
3367 | unsigned char *kaddr; | |
3368 | struct page *page; | |
3369 | block_t start; | |
3370 | int i, j, offset; | |
3371 | ||
3372 | start = start_sum_block(sbi); | |
3373 | ||
4d57b86d | 3374 | page = f2fs_get_meta_page(sbi, start++); |
7735730d CY |
3375 | if (IS_ERR(page)) |
3376 | return PTR_ERR(page); | |
351df4b2 JK |
3377 | kaddr = (unsigned char *)page_address(page); |
3378 | ||
3379 | /* Step 1: restore nat cache */ | |
3380 | seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
b7ad7512 | 3381 | memcpy(seg_i->journal, kaddr, SUM_JOURNAL_SIZE); |
351df4b2 JK |
3382 | |
3383 | /* Step 2: restore sit cache */ | |
3384 | seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 3385 | memcpy(seg_i->journal, kaddr + SUM_JOURNAL_SIZE, SUM_JOURNAL_SIZE); |
351df4b2 JK |
3386 | offset = 2 * SUM_JOURNAL_SIZE; |
3387 | ||
3388 | /* Step 3: restore summary entries */ | |
3389 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
3390 | unsigned short blk_off; | |
3391 | unsigned int segno; | |
3392 | ||
3393 | seg_i = CURSEG_I(sbi, i); | |
3394 | segno = le32_to_cpu(ckpt->cur_data_segno[i]); | |
3395 | blk_off = le16_to_cpu(ckpt->cur_data_blkoff[i]); | |
3396 | seg_i->next_segno = segno; | |
3397 | reset_curseg(sbi, i, 0); | |
3398 | seg_i->alloc_type = ckpt->alloc_type[i]; | |
3399 | seg_i->next_blkoff = blk_off; | |
3400 | ||
3401 | if (seg_i->alloc_type == SSR) | |
3402 | blk_off = sbi->blocks_per_seg; | |
3403 | ||
3404 | for (j = 0; j < blk_off; j++) { | |
3405 | struct f2fs_summary *s; | |
3406 | s = (struct f2fs_summary *)(kaddr + offset); | |
3407 | seg_i->sum_blk->entries[j] = *s; | |
3408 | offset += SUMMARY_SIZE; | |
09cbfeaf | 3409 | if (offset + SUMMARY_SIZE <= PAGE_SIZE - |
351df4b2 JK |
3410 | SUM_FOOTER_SIZE) |
3411 | continue; | |
3412 | ||
3413 | f2fs_put_page(page, 1); | |
3414 | page = NULL; | |
3415 | ||
4d57b86d | 3416 | page = f2fs_get_meta_page(sbi, start++); |
7735730d CY |
3417 | if (IS_ERR(page)) |
3418 | return PTR_ERR(page); | |
351df4b2 JK |
3419 | kaddr = (unsigned char *)page_address(page); |
3420 | offset = 0; | |
3421 | } | |
3422 | } | |
3423 | f2fs_put_page(page, 1); | |
7735730d | 3424 | return 0; |
351df4b2 JK |
3425 | } |
3426 | ||
3427 | static int read_normal_summaries(struct f2fs_sb_info *sbi, int type) | |
3428 | { | |
3429 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
3430 | struct f2fs_summary_block *sum; | |
3431 | struct curseg_info *curseg; | |
3432 | struct page *new; | |
3433 | unsigned short blk_off; | |
3434 | unsigned int segno = 0; | |
3435 | block_t blk_addr = 0; | |
7735730d | 3436 | int err = 0; |
351df4b2 JK |
3437 | |
3438 | /* get segment number and block addr */ | |
3439 | if (IS_DATASEG(type)) { | |
3440 | segno = le32_to_cpu(ckpt->cur_data_segno[type]); | |
3441 | blk_off = le16_to_cpu(ckpt->cur_data_blkoff[type - | |
3442 | CURSEG_HOT_DATA]); | |
119ee914 | 3443 | if (__exist_node_summaries(sbi)) |
351df4b2 JK |
3444 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_TYPE, type); |
3445 | else | |
3446 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_DATA_TYPE, type); | |
3447 | } else { | |
3448 | segno = le32_to_cpu(ckpt->cur_node_segno[type - | |
3449 | CURSEG_HOT_NODE]); | |
3450 | blk_off = le16_to_cpu(ckpt->cur_node_blkoff[type - | |
3451 | CURSEG_HOT_NODE]); | |
119ee914 | 3452 | if (__exist_node_summaries(sbi)) |
351df4b2 JK |
3453 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_NODE_TYPE, |
3454 | type - CURSEG_HOT_NODE); | |
3455 | else | |
3456 | blk_addr = GET_SUM_BLOCK(sbi, segno); | |
3457 | } | |
3458 | ||
4d57b86d | 3459 | new = f2fs_get_meta_page(sbi, blk_addr); |
7735730d CY |
3460 | if (IS_ERR(new)) |
3461 | return PTR_ERR(new); | |
351df4b2 JK |
3462 | sum = (struct f2fs_summary_block *)page_address(new); |
3463 | ||
3464 | if (IS_NODESEG(type)) { | |
119ee914 | 3465 | if (__exist_node_summaries(sbi)) { |
351df4b2 JK |
3466 | struct f2fs_summary *ns = &sum->entries[0]; |
3467 | int i; | |
3468 | for (i = 0; i < sbi->blocks_per_seg; i++, ns++) { | |
3469 | ns->version = 0; | |
3470 | ns->ofs_in_node = 0; | |
3471 | } | |
3472 | } else { | |
7735730d CY |
3473 | err = f2fs_restore_node_summary(sbi, segno, sum); |
3474 | if (err) | |
3475 | goto out; | |
351df4b2 JK |
3476 | } |
3477 | } | |
3478 | ||
3479 | /* set uncompleted segment to curseg */ | |
3480 | curseg = CURSEG_I(sbi, type); | |
3481 | mutex_lock(&curseg->curseg_mutex); | |
b7ad7512 CY |
3482 | |
3483 | /* update journal info */ | |
3484 | down_write(&curseg->journal_rwsem); | |
3485 | memcpy(curseg->journal, &sum->journal, SUM_JOURNAL_SIZE); | |
3486 | up_write(&curseg->journal_rwsem); | |
3487 | ||
3488 | memcpy(curseg->sum_blk->entries, sum->entries, SUM_ENTRY_SIZE); | |
3489 | memcpy(&curseg->sum_blk->footer, &sum->footer, SUM_FOOTER_SIZE); | |
351df4b2 JK |
3490 | curseg->next_segno = segno; |
3491 | reset_curseg(sbi, type, 0); | |
3492 | curseg->alloc_type = ckpt->alloc_type[type]; | |
3493 | curseg->next_blkoff = blk_off; | |
3494 | mutex_unlock(&curseg->curseg_mutex); | |
7735730d | 3495 | out: |
351df4b2 | 3496 | f2fs_put_page(new, 1); |
7735730d | 3497 | return err; |
351df4b2 JK |
3498 | } |
3499 | ||
3500 | static int restore_curseg_summaries(struct f2fs_sb_info *sbi) | |
3501 | { | |
21d3f8e1 JQ |
3502 | struct f2fs_journal *sit_j = CURSEG_I(sbi, CURSEG_COLD_DATA)->journal; |
3503 | struct f2fs_journal *nat_j = CURSEG_I(sbi, CURSEG_HOT_DATA)->journal; | |
351df4b2 | 3504 | int type = CURSEG_HOT_DATA; |
e4fc5fbf | 3505 | int err; |
351df4b2 | 3506 | |
aaec2b1d | 3507 | if (is_set_ckpt_flags(sbi, CP_COMPACT_SUM_FLAG)) { |
4d57b86d | 3508 | int npages = f2fs_npages_for_summary_flush(sbi, true); |
3fa06d7b CY |
3509 | |
3510 | if (npages >= 2) | |
4d57b86d | 3511 | f2fs_ra_meta_pages(sbi, start_sum_block(sbi), npages, |
26879fb1 | 3512 | META_CP, true); |
3fa06d7b | 3513 | |
351df4b2 | 3514 | /* restore for compacted data summary */ |
7735730d CY |
3515 | err = read_compacted_summaries(sbi); |
3516 | if (err) | |
3517 | return err; | |
351df4b2 JK |
3518 | type = CURSEG_HOT_NODE; |
3519 | } | |
3520 | ||
119ee914 | 3521 | if (__exist_node_summaries(sbi)) |
4d57b86d | 3522 | f2fs_ra_meta_pages(sbi, sum_blk_addr(sbi, NR_CURSEG_TYPE, type), |
26879fb1 | 3523 | NR_CURSEG_TYPE - type, META_CP, true); |
3fa06d7b | 3524 | |
e4fc5fbf CY |
3525 | for (; type <= CURSEG_COLD_NODE; type++) { |
3526 | err = read_normal_summaries(sbi, type); | |
3527 | if (err) | |
3528 | return err; | |
3529 | } | |
3530 | ||
21d3f8e1 JQ |
3531 | /* sanity check for summary blocks */ |
3532 | if (nats_in_cursum(nat_j) > NAT_JOURNAL_ENTRIES || | |
3533 | sits_in_cursum(sit_j) > SIT_JOURNAL_ENTRIES) | |
3534 | return -EINVAL; | |
3535 | ||
351df4b2 JK |
3536 | return 0; |
3537 | } | |
3538 | ||
3539 | static void write_compacted_summaries(struct f2fs_sb_info *sbi, block_t blkaddr) | |
3540 | { | |
3541 | struct page *page; | |
3542 | unsigned char *kaddr; | |
3543 | struct f2fs_summary *summary; | |
3544 | struct curseg_info *seg_i; | |
3545 | int written_size = 0; | |
3546 | int i, j; | |
3547 | ||
4d57b86d | 3548 | page = f2fs_grab_meta_page(sbi, blkaddr++); |
351df4b2 | 3549 | kaddr = (unsigned char *)page_address(page); |
81114baa | 3550 | memset(kaddr, 0, PAGE_SIZE); |
351df4b2 JK |
3551 | |
3552 | /* Step 1: write nat cache */ | |
3553 | seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
b7ad7512 | 3554 | memcpy(kaddr, seg_i->journal, SUM_JOURNAL_SIZE); |
351df4b2 JK |
3555 | written_size += SUM_JOURNAL_SIZE; |
3556 | ||
3557 | /* Step 2: write sit cache */ | |
3558 | seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 3559 | memcpy(kaddr + written_size, seg_i->journal, SUM_JOURNAL_SIZE); |
351df4b2 JK |
3560 | written_size += SUM_JOURNAL_SIZE; |
3561 | ||
351df4b2 JK |
3562 | /* Step 3: write summary entries */ |
3563 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
3564 | unsigned short blkoff; | |
3565 | seg_i = CURSEG_I(sbi, i); | |
3566 | if (sbi->ckpt->alloc_type[i] == SSR) | |
3567 | blkoff = sbi->blocks_per_seg; | |
3568 | else | |
3569 | blkoff = curseg_blkoff(sbi, i); | |
3570 | ||
3571 | for (j = 0; j < blkoff; j++) { | |
3572 | if (!page) { | |
4d57b86d | 3573 | page = f2fs_grab_meta_page(sbi, blkaddr++); |
351df4b2 | 3574 | kaddr = (unsigned char *)page_address(page); |
81114baa | 3575 | memset(kaddr, 0, PAGE_SIZE); |
351df4b2 JK |
3576 | written_size = 0; |
3577 | } | |
3578 | summary = (struct f2fs_summary *)(kaddr + written_size); | |
3579 | *summary = seg_i->sum_blk->entries[j]; | |
3580 | written_size += SUMMARY_SIZE; | |
351df4b2 | 3581 | |
09cbfeaf | 3582 | if (written_size + SUMMARY_SIZE <= PAGE_SIZE - |
351df4b2 JK |
3583 | SUM_FOOTER_SIZE) |
3584 | continue; | |
3585 | ||
e8d61a74 | 3586 | set_page_dirty(page); |
351df4b2 JK |
3587 | f2fs_put_page(page, 1); |
3588 | page = NULL; | |
3589 | } | |
3590 | } | |
e8d61a74 CY |
3591 | if (page) { |
3592 | set_page_dirty(page); | |
351df4b2 | 3593 | f2fs_put_page(page, 1); |
e8d61a74 | 3594 | } |
351df4b2 JK |
3595 | } |
3596 | ||
3597 | static void write_normal_summaries(struct f2fs_sb_info *sbi, | |
3598 | block_t blkaddr, int type) | |
3599 | { | |
3600 | int i, end; | |
3601 | if (IS_DATASEG(type)) | |
3602 | end = type + NR_CURSEG_DATA_TYPE; | |
3603 | else | |
3604 | end = type + NR_CURSEG_NODE_TYPE; | |
3605 | ||
b7ad7512 CY |
3606 | for (i = type; i < end; i++) |
3607 | write_current_sum_page(sbi, i, blkaddr + (i - type)); | |
351df4b2 JK |
3608 | } |
3609 | ||
4d57b86d | 3610 | void f2fs_write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk) |
351df4b2 | 3611 | { |
aaec2b1d | 3612 | if (is_set_ckpt_flags(sbi, CP_COMPACT_SUM_FLAG)) |
351df4b2 JK |
3613 | write_compacted_summaries(sbi, start_blk); |
3614 | else | |
3615 | write_normal_summaries(sbi, start_blk, CURSEG_HOT_DATA); | |
3616 | } | |
3617 | ||
4d57b86d | 3618 | void f2fs_write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk) |
351df4b2 | 3619 | { |
119ee914 | 3620 | write_normal_summaries(sbi, start_blk, CURSEG_HOT_NODE); |
351df4b2 JK |
3621 | } |
3622 | ||
4d57b86d | 3623 | int f2fs_lookup_journal_in_cursum(struct f2fs_journal *journal, int type, |
351df4b2 JK |
3624 | unsigned int val, int alloc) |
3625 | { | |
3626 | int i; | |
3627 | ||
3628 | if (type == NAT_JOURNAL) { | |
dfc08a12 CY |
3629 | for (i = 0; i < nats_in_cursum(journal); i++) { |
3630 | if (le32_to_cpu(nid_in_journal(journal, i)) == val) | |
351df4b2 JK |
3631 | return i; |
3632 | } | |
dfc08a12 CY |
3633 | if (alloc && __has_cursum_space(journal, 1, NAT_JOURNAL)) |
3634 | return update_nats_in_cursum(journal, 1); | |
351df4b2 | 3635 | } else if (type == SIT_JOURNAL) { |
dfc08a12 CY |
3636 | for (i = 0; i < sits_in_cursum(journal); i++) |
3637 | if (le32_to_cpu(segno_in_journal(journal, i)) == val) | |
351df4b2 | 3638 | return i; |
dfc08a12 CY |
3639 | if (alloc && __has_cursum_space(journal, 1, SIT_JOURNAL)) |
3640 | return update_sits_in_cursum(journal, 1); | |
351df4b2 JK |
3641 | } |
3642 | return -1; | |
3643 | } | |
3644 | ||
3645 | static struct page *get_current_sit_page(struct f2fs_sb_info *sbi, | |
3646 | unsigned int segno) | |
3647 | { | |
7735730d | 3648 | return f2fs_get_meta_page_nofail(sbi, current_sit_addr(sbi, segno)); |
351df4b2 JK |
3649 | } |
3650 | ||
3651 | static struct page *get_next_sit_page(struct f2fs_sb_info *sbi, | |
3652 | unsigned int start) | |
3653 | { | |
3654 | struct sit_info *sit_i = SIT_I(sbi); | |
068c3cd8 | 3655 | struct page *page; |
351df4b2 | 3656 | pgoff_t src_off, dst_off; |
351df4b2 JK |
3657 | |
3658 | src_off = current_sit_addr(sbi, start); | |
3659 | dst_off = next_sit_addr(sbi, src_off); | |
3660 | ||
4d57b86d | 3661 | page = f2fs_grab_meta_page(sbi, dst_off); |
068c3cd8 | 3662 | seg_info_to_sit_page(sbi, page, start); |
351df4b2 | 3663 | |
068c3cd8 | 3664 | set_page_dirty(page); |
351df4b2 JK |
3665 | set_to_next_sit(sit_i, start); |
3666 | ||
068c3cd8 | 3667 | return page; |
351df4b2 JK |
3668 | } |
3669 | ||
184a5cd2 CY |
3670 | static struct sit_entry_set *grab_sit_entry_set(void) |
3671 | { | |
3672 | struct sit_entry_set *ses = | |
80c54505 | 3673 | f2fs_kmem_cache_alloc(sit_entry_set_slab, GFP_NOFS); |
184a5cd2 CY |
3674 | |
3675 | ses->entry_cnt = 0; | |
3676 | INIT_LIST_HEAD(&ses->set_list); | |
3677 | return ses; | |
3678 | } | |
3679 | ||
3680 | static void release_sit_entry_set(struct sit_entry_set *ses) | |
3681 | { | |
3682 | list_del(&ses->set_list); | |
3683 | kmem_cache_free(sit_entry_set_slab, ses); | |
3684 | } | |
3685 | ||
3686 | static void adjust_sit_entry_set(struct sit_entry_set *ses, | |
3687 | struct list_head *head) | |
3688 | { | |
3689 | struct sit_entry_set *next = ses; | |
3690 | ||
3691 | if (list_is_last(&ses->set_list, head)) | |
3692 | return; | |
3693 | ||
3694 | list_for_each_entry_continue(next, head, set_list) | |
3695 | if (ses->entry_cnt <= next->entry_cnt) | |
3696 | break; | |
3697 | ||
3698 | list_move_tail(&ses->set_list, &next->set_list); | |
3699 | } | |
3700 | ||
3701 | static void add_sit_entry(unsigned int segno, struct list_head *head) | |
3702 | { | |
3703 | struct sit_entry_set *ses; | |
3704 | unsigned int start_segno = START_SEGNO(segno); | |
3705 | ||
3706 | list_for_each_entry(ses, head, set_list) { | |
3707 | if (ses->start_segno == start_segno) { | |
3708 | ses->entry_cnt++; | |
3709 | adjust_sit_entry_set(ses, head); | |
3710 | return; | |
3711 | } | |
3712 | } | |
3713 | ||
3714 | ses = grab_sit_entry_set(); | |
3715 | ||
3716 | ses->start_segno = start_segno; | |
3717 | ses->entry_cnt++; | |
3718 | list_add(&ses->set_list, head); | |
3719 | } | |
3720 | ||
3721 | static void add_sits_in_set(struct f2fs_sb_info *sbi) | |
3722 | { | |
3723 | struct f2fs_sm_info *sm_info = SM_I(sbi); | |
3724 | struct list_head *set_list = &sm_info->sit_entry_set; | |
3725 | unsigned long *bitmap = SIT_I(sbi)->dirty_sentries_bitmap; | |
184a5cd2 CY |
3726 | unsigned int segno; |
3727 | ||
7cd8558b | 3728 | for_each_set_bit(segno, bitmap, MAIN_SEGS(sbi)) |
184a5cd2 CY |
3729 | add_sit_entry(segno, set_list); |
3730 | } | |
3731 | ||
3732 | static void remove_sits_in_journal(struct f2fs_sb_info *sbi) | |
351df4b2 JK |
3733 | { |
3734 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 3735 | struct f2fs_journal *journal = curseg->journal; |
351df4b2 JK |
3736 | int i; |
3737 | ||
b7ad7512 | 3738 | down_write(&curseg->journal_rwsem); |
dfc08a12 | 3739 | for (i = 0; i < sits_in_cursum(journal); i++) { |
184a5cd2 CY |
3740 | unsigned int segno; |
3741 | bool dirtied; | |
3742 | ||
dfc08a12 | 3743 | segno = le32_to_cpu(segno_in_journal(journal, i)); |
184a5cd2 CY |
3744 | dirtied = __mark_sit_entry_dirty(sbi, segno); |
3745 | ||
3746 | if (!dirtied) | |
3747 | add_sit_entry(segno, &SM_I(sbi)->sit_entry_set); | |
351df4b2 | 3748 | } |
dfc08a12 | 3749 | update_sits_in_cursum(journal, -i); |
b7ad7512 | 3750 | up_write(&curseg->journal_rwsem); |
351df4b2 JK |
3751 | } |
3752 | ||
0a8165d7 | 3753 | /* |
351df4b2 JK |
3754 | * CP calls this function, which flushes SIT entries including sit_journal, |
3755 | * and moves prefree segs to free segs. | |
3756 | */ | |
4d57b86d | 3757 | void f2fs_flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
351df4b2 JK |
3758 | { |
3759 | struct sit_info *sit_i = SIT_I(sbi); | |
3760 | unsigned long *bitmap = sit_i->dirty_sentries_bitmap; | |
3761 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 3762 | struct f2fs_journal *journal = curseg->journal; |
184a5cd2 CY |
3763 | struct sit_entry_set *ses, *tmp; |
3764 | struct list_head *head = &SM_I(sbi)->sit_entry_set; | |
184a5cd2 | 3765 | bool to_journal = true; |
4b2fecc8 | 3766 | struct seg_entry *se; |
351df4b2 | 3767 | |
3d26fa6b | 3768 | down_write(&sit_i->sentry_lock); |
351df4b2 | 3769 | |
2b11a74b WL |
3770 | if (!sit_i->dirty_sentries) |
3771 | goto out; | |
3772 | ||
351df4b2 | 3773 | /* |
184a5cd2 CY |
3774 | * add and account sit entries of dirty bitmap in sit entry |
3775 | * set temporarily | |
351df4b2 | 3776 | */ |
184a5cd2 | 3777 | add_sits_in_set(sbi); |
351df4b2 | 3778 | |
184a5cd2 CY |
3779 | /* |
3780 | * if there are no enough space in journal to store dirty sit | |
3781 | * entries, remove all entries from journal and add and account | |
3782 | * them in sit entry set. | |
3783 | */ | |
dfc08a12 | 3784 | if (!__has_cursum_space(journal, sit_i->dirty_sentries, SIT_JOURNAL)) |
184a5cd2 | 3785 | remove_sits_in_journal(sbi); |
b2955550 | 3786 | |
184a5cd2 CY |
3787 | /* |
3788 | * there are two steps to flush sit entries: | |
3789 | * #1, flush sit entries to journal in current cold data summary block. | |
3790 | * #2, flush sit entries to sit page. | |
3791 | */ | |
3792 | list_for_each_entry_safe(ses, tmp, head, set_list) { | |
4a257ed6 | 3793 | struct page *page = NULL; |
184a5cd2 CY |
3794 | struct f2fs_sit_block *raw_sit = NULL; |
3795 | unsigned int start_segno = ses->start_segno; | |
3796 | unsigned int end = min(start_segno + SIT_ENTRY_PER_BLOCK, | |
7cd8558b | 3797 | (unsigned long)MAIN_SEGS(sbi)); |
184a5cd2 CY |
3798 | unsigned int segno = start_segno; |
3799 | ||
3800 | if (to_journal && | |
dfc08a12 | 3801 | !__has_cursum_space(journal, ses->entry_cnt, SIT_JOURNAL)) |
184a5cd2 CY |
3802 | to_journal = false; |
3803 | ||
b7ad7512 CY |
3804 | if (to_journal) { |
3805 | down_write(&curseg->journal_rwsem); | |
3806 | } else { | |
184a5cd2 CY |
3807 | page = get_next_sit_page(sbi, start_segno); |
3808 | raw_sit = page_address(page); | |
351df4b2 | 3809 | } |
351df4b2 | 3810 | |
184a5cd2 CY |
3811 | /* flush dirty sit entries in region of current sit set */ |
3812 | for_each_set_bit_from(segno, bitmap, end) { | |
3813 | int offset, sit_offset; | |
4b2fecc8 JK |
3814 | |
3815 | se = get_seg_entry(sbi, segno); | |
56b07e7e ZZ |
3816 | #ifdef CONFIG_F2FS_CHECK_FS |
3817 | if (memcmp(se->cur_valid_map, se->cur_valid_map_mir, | |
3818 | SIT_VBLOCK_MAP_SIZE)) | |
3819 | f2fs_bug_on(sbi, 1); | |
3820 | #endif | |
184a5cd2 CY |
3821 | |
3822 | /* add discard candidates */ | |
c473f1a9 | 3823 | if (!(cpc->reason & CP_DISCARD)) { |
4b2fecc8 | 3824 | cpc->trim_start = segno; |
25290fa5 | 3825 | add_discard_addrs(sbi, cpc, false); |
4b2fecc8 | 3826 | } |
184a5cd2 CY |
3827 | |
3828 | if (to_journal) { | |
4d57b86d | 3829 | offset = f2fs_lookup_journal_in_cursum(journal, |
184a5cd2 CY |
3830 | SIT_JOURNAL, segno, 1); |
3831 | f2fs_bug_on(sbi, offset < 0); | |
dfc08a12 | 3832 | segno_in_journal(journal, offset) = |
184a5cd2 CY |
3833 | cpu_to_le32(segno); |
3834 | seg_info_to_raw_sit(se, | |
dfc08a12 | 3835 | &sit_in_journal(journal, offset)); |
56b07e7e ZZ |
3836 | check_block_count(sbi, segno, |
3837 | &sit_in_journal(journal, offset)); | |
184a5cd2 CY |
3838 | } else { |
3839 | sit_offset = SIT_ENTRY_OFFSET(sit_i, segno); | |
3840 | seg_info_to_raw_sit(se, | |
3841 | &raw_sit->entries[sit_offset]); | |
56b07e7e ZZ |
3842 | check_block_count(sbi, segno, |
3843 | &raw_sit->entries[sit_offset]); | |
184a5cd2 | 3844 | } |
351df4b2 | 3845 | |
184a5cd2 CY |
3846 | __clear_bit(segno, bitmap); |
3847 | sit_i->dirty_sentries--; | |
3848 | ses->entry_cnt--; | |
351df4b2 JK |
3849 | } |
3850 | ||
b7ad7512 CY |
3851 | if (to_journal) |
3852 | up_write(&curseg->journal_rwsem); | |
3853 | else | |
184a5cd2 CY |
3854 | f2fs_put_page(page, 1); |
3855 | ||
3856 | f2fs_bug_on(sbi, ses->entry_cnt); | |
3857 | release_sit_entry_set(ses); | |
351df4b2 | 3858 | } |
184a5cd2 CY |
3859 | |
3860 | f2fs_bug_on(sbi, !list_empty(head)); | |
3861 | f2fs_bug_on(sbi, sit_i->dirty_sentries); | |
184a5cd2 | 3862 | out: |
c473f1a9 | 3863 | if (cpc->reason & CP_DISCARD) { |
650d3c4e YH |
3864 | __u64 trim_start = cpc->trim_start; |
3865 | ||
4b2fecc8 | 3866 | for (; cpc->trim_start <= cpc->trim_end; cpc->trim_start++) |
25290fa5 | 3867 | add_discard_addrs(sbi, cpc, false); |
650d3c4e YH |
3868 | |
3869 | cpc->trim_start = trim_start; | |
4b2fecc8 | 3870 | } |
3d26fa6b | 3871 | up_write(&sit_i->sentry_lock); |
351df4b2 | 3872 | |
351df4b2 JK |
3873 | set_prefree_as_free_segments(sbi); |
3874 | } | |
3875 | ||
3876 | static int build_sit_info(struct f2fs_sb_info *sbi) | |
3877 | { | |
3878 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); | |
351df4b2 JK |
3879 | struct sit_info *sit_i; |
3880 | unsigned int sit_segs, start; | |
ae27d62e | 3881 | char *src_bitmap; |
351df4b2 JK |
3882 | unsigned int bitmap_size; |
3883 | ||
3884 | /* allocate memory for SIT information */ | |
acbf054d | 3885 | sit_i = f2fs_kzalloc(sbi, sizeof(struct sit_info), GFP_KERNEL); |
351df4b2 JK |
3886 | if (!sit_i) |
3887 | return -ENOMEM; | |
3888 | ||
3889 | SM_I(sbi)->sit_info = sit_i; | |
3890 | ||
9d2a789c KC |
3891 | sit_i->sentries = |
3892 | f2fs_kvzalloc(sbi, array_size(sizeof(struct seg_entry), | |
3893 | MAIN_SEGS(sbi)), | |
3894 | GFP_KERNEL); | |
351df4b2 JK |
3895 | if (!sit_i->sentries) |
3896 | return -ENOMEM; | |
3897 | ||
7cd8558b | 3898 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
628b3d14 CY |
3899 | sit_i->dirty_sentries_bitmap = f2fs_kvzalloc(sbi, bitmap_size, |
3900 | GFP_KERNEL); | |
351df4b2 JK |
3901 | if (!sit_i->dirty_sentries_bitmap) |
3902 | return -ENOMEM; | |
3903 | ||
7cd8558b | 3904 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
351df4b2 | 3905 | sit_i->sentries[start].cur_valid_map |
acbf054d | 3906 | = f2fs_kzalloc(sbi, SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); |
351df4b2 | 3907 | sit_i->sentries[start].ckpt_valid_map |
acbf054d | 3908 | = f2fs_kzalloc(sbi, SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); |
a66cdd98 | 3909 | if (!sit_i->sentries[start].cur_valid_map || |
3e025740 | 3910 | !sit_i->sentries[start].ckpt_valid_map) |
351df4b2 | 3911 | return -ENOMEM; |
3e025740 | 3912 | |
355e7891 CY |
3913 | #ifdef CONFIG_F2FS_CHECK_FS |
3914 | sit_i->sentries[start].cur_valid_map_mir | |
acbf054d | 3915 | = f2fs_kzalloc(sbi, SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); |
355e7891 CY |
3916 | if (!sit_i->sentries[start].cur_valid_map_mir) |
3917 | return -ENOMEM; | |
3918 | #endif | |
3919 | ||
7d20c8ab CY |
3920 | sit_i->sentries[start].discard_map |
3921 | = f2fs_kzalloc(sbi, SIT_VBLOCK_MAP_SIZE, | |
3922 | GFP_KERNEL); | |
3923 | if (!sit_i->sentries[start].discard_map) | |
3924 | return -ENOMEM; | |
351df4b2 JK |
3925 | } |
3926 | ||
acbf054d | 3927 | sit_i->tmp_map = f2fs_kzalloc(sbi, SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); |
60a3b782 JK |
3928 | if (!sit_i->tmp_map) |
3929 | return -ENOMEM; | |
3930 | ||
2c70c5e3 | 3931 | if (__is_large_section(sbi)) { |
9d2a789c KC |
3932 | sit_i->sec_entries = |
3933 | f2fs_kvzalloc(sbi, array_size(sizeof(struct sec_entry), | |
3934 | MAIN_SECS(sbi)), | |
3935 | GFP_KERNEL); | |
351df4b2 JK |
3936 | if (!sit_i->sec_entries) |
3937 | return -ENOMEM; | |
3938 | } | |
3939 | ||
3940 | /* get information related with SIT */ | |
3941 | sit_segs = le32_to_cpu(raw_super->segment_count_sit) >> 1; | |
3942 | ||
3943 | /* setup SIT bitmap from ckeckpoint pack */ | |
3944 | bitmap_size = __bitmap_size(sbi, SIT_BITMAP); | |
3945 | src_bitmap = __bitmap_ptr(sbi, SIT_BITMAP); | |
3946 | ||
ae27d62e CY |
3947 | sit_i->sit_bitmap = kmemdup(src_bitmap, bitmap_size, GFP_KERNEL); |
3948 | if (!sit_i->sit_bitmap) | |
351df4b2 | 3949 | return -ENOMEM; |
351df4b2 | 3950 | |
ae27d62e CY |
3951 | #ifdef CONFIG_F2FS_CHECK_FS |
3952 | sit_i->sit_bitmap_mir = kmemdup(src_bitmap, bitmap_size, GFP_KERNEL); | |
3953 | if (!sit_i->sit_bitmap_mir) | |
3954 | return -ENOMEM; | |
3955 | #endif | |
3956 | ||
351df4b2 JK |
3957 | /* init SIT information */ |
3958 | sit_i->s_ops = &default_salloc_ops; | |
3959 | ||
3960 | sit_i->sit_base_addr = le32_to_cpu(raw_super->sit_blkaddr); | |
3961 | sit_i->sit_blocks = sit_segs << sbi->log_blocks_per_seg; | |
c79b7ff1 | 3962 | sit_i->written_valid_blocks = 0; |
351df4b2 JK |
3963 | sit_i->bitmap_size = bitmap_size; |
3964 | sit_i->dirty_sentries = 0; | |
3965 | sit_i->sents_per_block = SIT_ENTRY_PER_BLOCK; | |
3966 | sit_i->elapsed_time = le64_to_cpu(sbi->ckpt->elapsed_time); | |
48fbfe50 | 3967 | sit_i->mounted_time = ktime_get_real_seconds(); |
3d26fa6b | 3968 | init_rwsem(&sit_i->sentry_lock); |
351df4b2 JK |
3969 | return 0; |
3970 | } | |
3971 | ||
3972 | static int build_free_segmap(struct f2fs_sb_info *sbi) | |
3973 | { | |
351df4b2 JK |
3974 | struct free_segmap_info *free_i; |
3975 | unsigned int bitmap_size, sec_bitmap_size; | |
3976 | ||
3977 | /* allocate memory for free segmap information */ | |
acbf054d | 3978 | free_i = f2fs_kzalloc(sbi, sizeof(struct free_segmap_info), GFP_KERNEL); |
351df4b2 JK |
3979 | if (!free_i) |
3980 | return -ENOMEM; | |
3981 | ||
3982 | SM_I(sbi)->free_info = free_i; | |
3983 | ||
7cd8558b | 3984 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
628b3d14 | 3985 | free_i->free_segmap = f2fs_kvmalloc(sbi, bitmap_size, GFP_KERNEL); |
351df4b2 JK |
3986 | if (!free_i->free_segmap) |
3987 | return -ENOMEM; | |
3988 | ||
7cd8558b | 3989 | sec_bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi)); |
628b3d14 | 3990 | free_i->free_secmap = f2fs_kvmalloc(sbi, sec_bitmap_size, GFP_KERNEL); |
351df4b2 JK |
3991 | if (!free_i->free_secmap) |
3992 | return -ENOMEM; | |
3993 | ||
3994 | /* set all segments as dirty temporarily */ | |
3995 | memset(free_i->free_segmap, 0xff, bitmap_size); | |
3996 | memset(free_i->free_secmap, 0xff, sec_bitmap_size); | |
3997 | ||
3998 | /* init free segmap information */ | |
7cd8558b | 3999 | free_i->start_segno = GET_SEGNO_FROM_SEG0(sbi, MAIN_BLKADDR(sbi)); |
351df4b2 JK |
4000 | free_i->free_segments = 0; |
4001 | free_i->free_sections = 0; | |
1a118ccf | 4002 | spin_lock_init(&free_i->segmap_lock); |
351df4b2 JK |
4003 | return 0; |
4004 | } | |
4005 | ||
4006 | static int build_curseg(struct f2fs_sb_info *sbi) | |
4007 | { | |
1042d60f | 4008 | struct curseg_info *array; |
351df4b2 JK |
4009 | int i; |
4010 | ||
026f0507 KC |
4011 | array = f2fs_kzalloc(sbi, array_size(NR_CURSEG_TYPE, sizeof(*array)), |
4012 | GFP_KERNEL); | |
351df4b2 JK |
4013 | if (!array) |
4014 | return -ENOMEM; | |
4015 | ||
4016 | SM_I(sbi)->curseg_array = array; | |
4017 | ||
4018 | for (i = 0; i < NR_CURSEG_TYPE; i++) { | |
4019 | mutex_init(&array[i].curseg_mutex); | |
acbf054d | 4020 | array[i].sum_blk = f2fs_kzalloc(sbi, PAGE_SIZE, GFP_KERNEL); |
351df4b2 JK |
4021 | if (!array[i].sum_blk) |
4022 | return -ENOMEM; | |
b7ad7512 | 4023 | init_rwsem(&array[i].journal_rwsem); |
acbf054d CY |
4024 | array[i].journal = f2fs_kzalloc(sbi, |
4025 | sizeof(struct f2fs_journal), GFP_KERNEL); | |
b7ad7512 CY |
4026 | if (!array[i].journal) |
4027 | return -ENOMEM; | |
351df4b2 JK |
4028 | array[i].segno = NULL_SEGNO; |
4029 | array[i].next_blkoff = 0; | |
4030 | } | |
4031 | return restore_curseg_summaries(sbi); | |
4032 | } | |
4033 | ||
c39a1b34 | 4034 | static int build_sit_entries(struct f2fs_sb_info *sbi) |
351df4b2 JK |
4035 | { |
4036 | struct sit_info *sit_i = SIT_I(sbi); | |
4037 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 4038 | struct f2fs_journal *journal = curseg->journal; |
9c094040 YH |
4039 | struct seg_entry *se; |
4040 | struct f2fs_sit_entry sit; | |
74de593a CY |
4041 | int sit_blk_cnt = SIT_BLK_CNT(sbi); |
4042 | unsigned int i, start, end; | |
4043 | unsigned int readed, start_blk = 0; | |
c39a1b34 | 4044 | int err = 0; |
8a29c126 | 4045 | block_t total_node_blocks = 0; |
351df4b2 | 4046 | |
74de593a | 4047 | do { |
4d57b86d | 4048 | readed = f2fs_ra_meta_pages(sbi, start_blk, BIO_MAX_PAGES, |
664ba972 | 4049 | META_SIT, true); |
74de593a CY |
4050 | |
4051 | start = start_blk * sit_i->sents_per_block; | |
4052 | end = (start_blk + readed) * sit_i->sents_per_block; | |
4053 | ||
7cd8558b | 4054 | for (; start < end && start < MAIN_SEGS(sbi); start++) { |
74de593a | 4055 | struct f2fs_sit_block *sit_blk; |
74de593a CY |
4056 | struct page *page; |
4057 | ||
9c094040 | 4058 | se = &sit_i->sentries[start]; |
74de593a | 4059 | page = get_current_sit_page(sbi, start); |
edc55aaf JK |
4060 | if (IS_ERR(page)) |
4061 | return PTR_ERR(page); | |
74de593a CY |
4062 | sit_blk = (struct f2fs_sit_block *)page_address(page); |
4063 | sit = sit_blk->entries[SIT_ENTRY_OFFSET(sit_i, start)]; | |
4064 | f2fs_put_page(page, 1); | |
d600af23 | 4065 | |
c39a1b34 JK |
4066 | err = check_block_count(sbi, start, &sit); |
4067 | if (err) | |
4068 | return err; | |
74de593a | 4069 | seg_info_from_raw_sit(se, &sit); |
8a29c126 JK |
4070 | if (IS_NODESEG(se->type)) |
4071 | total_node_blocks += se->valid_blocks; | |
a66cdd98 JK |
4072 | |
4073 | /* build discard map only one time */ | |
7d20c8ab CY |
4074 | if (is_set_ckpt_flags(sbi, CP_TRIMMED_FLAG)) { |
4075 | memset(se->discard_map, 0xff, | |
4076 | SIT_VBLOCK_MAP_SIZE); | |
4077 | } else { | |
4078 | memcpy(se->discard_map, | |
4079 | se->cur_valid_map, | |
4080 | SIT_VBLOCK_MAP_SIZE); | |
4081 | sbi->discard_blks += | |
4082 | sbi->blocks_per_seg - | |
4083 | se->valid_blocks; | |
3e025740 | 4084 | } |
a66cdd98 | 4085 | |
2c70c5e3 | 4086 | if (__is_large_section(sbi)) |
d600af23 CY |
4087 | get_sec_entry(sbi, start)->valid_blocks += |
4088 | se->valid_blocks; | |
351df4b2 | 4089 | } |
74de593a CY |
4090 | start_blk += readed; |
4091 | } while (start_blk < sit_blk_cnt); | |
d600af23 CY |
4092 | |
4093 | down_read(&curseg->journal_rwsem); | |
4094 | for (i = 0; i < sits_in_cursum(journal); i++) { | |
d600af23 CY |
4095 | unsigned int old_valid_blocks; |
4096 | ||
4097 | start = le32_to_cpu(segno_in_journal(journal, i)); | |
b2ca374f JK |
4098 | if (start >= MAIN_SEGS(sbi)) { |
4099 | f2fs_msg(sbi->sb, KERN_ERR, | |
4100 | "Wrong journal entry on segno %u", | |
4101 | start); | |
4102 | set_sbi_flag(sbi, SBI_NEED_FSCK); | |
4103 | err = -EINVAL; | |
4104 | break; | |
4105 | } | |
4106 | ||
d600af23 CY |
4107 | se = &sit_i->sentries[start]; |
4108 | sit = sit_in_journal(journal, i); | |
4109 | ||
4110 | old_valid_blocks = se->valid_blocks; | |
8a29c126 JK |
4111 | if (IS_NODESEG(se->type)) |
4112 | total_node_blocks -= old_valid_blocks; | |
d600af23 | 4113 | |
c39a1b34 JK |
4114 | err = check_block_count(sbi, start, &sit); |
4115 | if (err) | |
4116 | break; | |
d600af23 | 4117 | seg_info_from_raw_sit(se, &sit); |
8a29c126 JK |
4118 | if (IS_NODESEG(se->type)) |
4119 | total_node_blocks += se->valid_blocks; | |
d600af23 | 4120 | |
7d20c8ab CY |
4121 | if (is_set_ckpt_flags(sbi, CP_TRIMMED_FLAG)) { |
4122 | memset(se->discard_map, 0xff, SIT_VBLOCK_MAP_SIZE); | |
4123 | } else { | |
4124 | memcpy(se->discard_map, se->cur_valid_map, | |
4125 | SIT_VBLOCK_MAP_SIZE); | |
4126 | sbi->discard_blks += old_valid_blocks; | |
4127 | sbi->discard_blks -= se->valid_blocks; | |
d600af23 CY |
4128 | } |
4129 | ||
2c70c5e3 | 4130 | if (__is_large_section(sbi)) { |
d600af23 | 4131 | get_sec_entry(sbi, start)->valid_blocks += |
a9af3fdc CY |
4132 | se->valid_blocks; |
4133 | get_sec_entry(sbi, start)->valid_blocks -= | |
4134 | old_valid_blocks; | |
4135 | } | |
d600af23 CY |
4136 | } |
4137 | up_read(&curseg->journal_rwsem); | |
8a29c126 JK |
4138 | |
4139 | if (!err && total_node_blocks != valid_node_count(sbi)) { | |
4140 | f2fs_msg(sbi->sb, KERN_ERR, | |
4141 | "SIT is corrupted node# %u vs %u", | |
4142 | total_node_blocks, valid_node_count(sbi)); | |
4143 | set_sbi_flag(sbi, SBI_NEED_FSCK); | |
4144 | err = -EINVAL; | |
4145 | } | |
4146 | ||
c39a1b34 | 4147 | return err; |
351df4b2 JK |
4148 | } |
4149 | ||
4150 | static void init_free_segmap(struct f2fs_sb_info *sbi) | |
4151 | { | |
4152 | unsigned int start; | |
4153 | int type; | |
4154 | ||
7cd8558b | 4155 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
351df4b2 JK |
4156 | struct seg_entry *sentry = get_seg_entry(sbi, start); |
4157 | if (!sentry->valid_blocks) | |
4158 | __set_free(sbi, start); | |
c79b7ff1 JK |
4159 | else |
4160 | SIT_I(sbi)->written_valid_blocks += | |
4161 | sentry->valid_blocks; | |
351df4b2 JK |
4162 | } |
4163 | ||
4164 | /* set use the current segments */ | |
4165 | for (type = CURSEG_HOT_DATA; type <= CURSEG_COLD_NODE; type++) { | |
4166 | struct curseg_info *curseg_t = CURSEG_I(sbi, type); | |
4167 | __set_test_and_inuse(sbi, curseg_t->segno); | |
4168 | } | |
4169 | } | |
4170 | ||
4171 | static void init_dirty_segmap(struct f2fs_sb_info *sbi) | |
4172 | { | |
4173 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
4174 | struct free_segmap_info *free_i = FREE_I(sbi); | |
7cd8558b | 4175 | unsigned int segno = 0, offset = 0; |
351df4b2 JK |
4176 | unsigned short valid_blocks; |
4177 | ||
8736fbf0 | 4178 | while (1) { |
351df4b2 | 4179 | /* find dirty segment based on free segmap */ |
7cd8558b JK |
4180 | segno = find_next_inuse(free_i, MAIN_SEGS(sbi), offset); |
4181 | if (segno >= MAIN_SEGS(sbi)) | |
351df4b2 JK |
4182 | break; |
4183 | offset = segno + 1; | |
302bd348 | 4184 | valid_blocks = get_valid_blocks(sbi, segno, false); |
ec325b52 | 4185 | if (valid_blocks == sbi->blocks_per_seg || !valid_blocks) |
351df4b2 | 4186 | continue; |
ec325b52 JK |
4187 | if (valid_blocks > sbi->blocks_per_seg) { |
4188 | f2fs_bug_on(sbi, 1); | |
4189 | continue; | |
4190 | } | |
351df4b2 JK |
4191 | mutex_lock(&dirty_i->seglist_lock); |
4192 | __locate_dirty_segment(sbi, segno, DIRTY); | |
4193 | mutex_unlock(&dirty_i->seglist_lock); | |
4194 | } | |
4195 | } | |
4196 | ||
5ec4e49f | 4197 | static int init_victim_secmap(struct f2fs_sb_info *sbi) |
351df4b2 JK |
4198 | { |
4199 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
7cd8558b | 4200 | unsigned int bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi)); |
351df4b2 | 4201 | |
628b3d14 | 4202 | dirty_i->victim_secmap = f2fs_kvzalloc(sbi, bitmap_size, GFP_KERNEL); |
5ec4e49f | 4203 | if (!dirty_i->victim_secmap) |
351df4b2 JK |
4204 | return -ENOMEM; |
4205 | return 0; | |
4206 | } | |
4207 | ||
4208 | static int build_dirty_segmap(struct f2fs_sb_info *sbi) | |
4209 | { | |
4210 | struct dirty_seglist_info *dirty_i; | |
4211 | unsigned int bitmap_size, i; | |
4212 | ||
4213 | /* allocate memory for dirty segments list information */ | |
acbf054d CY |
4214 | dirty_i = f2fs_kzalloc(sbi, sizeof(struct dirty_seglist_info), |
4215 | GFP_KERNEL); | |
351df4b2 JK |
4216 | if (!dirty_i) |
4217 | return -ENOMEM; | |
4218 | ||
4219 | SM_I(sbi)->dirty_info = dirty_i; | |
4220 | mutex_init(&dirty_i->seglist_lock); | |
4221 | ||
7cd8558b | 4222 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
351df4b2 JK |
4223 | |
4224 | for (i = 0; i < NR_DIRTY_TYPE; i++) { | |
628b3d14 CY |
4225 | dirty_i->dirty_segmap[i] = f2fs_kvzalloc(sbi, bitmap_size, |
4226 | GFP_KERNEL); | |
351df4b2 JK |
4227 | if (!dirty_i->dirty_segmap[i]) |
4228 | return -ENOMEM; | |
4229 | } | |
4230 | ||
4231 | init_dirty_segmap(sbi); | |
5ec4e49f | 4232 | return init_victim_secmap(sbi); |
351df4b2 JK |
4233 | } |
4234 | ||
0a8165d7 | 4235 | /* |
351df4b2 JK |
4236 | * Update min, max modified time for cost-benefit GC algorithm |
4237 | */ | |
4238 | static void init_min_max_mtime(struct f2fs_sb_info *sbi) | |
4239 | { | |
4240 | struct sit_info *sit_i = SIT_I(sbi); | |
4241 | unsigned int segno; | |
4242 | ||
3d26fa6b | 4243 | down_write(&sit_i->sentry_lock); |
351df4b2 | 4244 | |
5ad25442 | 4245 | sit_i->min_mtime = ULLONG_MAX; |
351df4b2 | 4246 | |
7cd8558b | 4247 | for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) { |
351df4b2 JK |
4248 | unsigned int i; |
4249 | unsigned long long mtime = 0; | |
4250 | ||
4251 | for (i = 0; i < sbi->segs_per_sec; i++) | |
4252 | mtime += get_seg_entry(sbi, segno + i)->mtime; | |
4253 | ||
4254 | mtime = div_u64(mtime, sbi->segs_per_sec); | |
4255 | ||
4256 | if (sit_i->min_mtime > mtime) | |
4257 | sit_i->min_mtime = mtime; | |
4258 | } | |
a1f72ac2 | 4259 | sit_i->max_mtime = get_mtime(sbi, false); |
3d26fa6b | 4260 | up_write(&sit_i->sentry_lock); |
351df4b2 JK |
4261 | } |
4262 | ||
4d57b86d | 4263 | int f2fs_build_segment_manager(struct f2fs_sb_info *sbi) |
351df4b2 JK |
4264 | { |
4265 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); | |
4266 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1042d60f | 4267 | struct f2fs_sm_info *sm_info; |
351df4b2 JK |
4268 | int err; |
4269 | ||
acbf054d | 4270 | sm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_sm_info), GFP_KERNEL); |
351df4b2 JK |
4271 | if (!sm_info) |
4272 | return -ENOMEM; | |
4273 | ||
4274 | /* init sm info */ | |
4275 | sbi->sm_info = sm_info; | |
351df4b2 JK |
4276 | sm_info->seg0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); |
4277 | sm_info->main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); | |
4278 | sm_info->segment_count = le32_to_cpu(raw_super->segment_count); | |
4279 | sm_info->reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count); | |
4280 | sm_info->ovp_segments = le32_to_cpu(ckpt->overprov_segment_count); | |
4281 | sm_info->main_segments = le32_to_cpu(raw_super->segment_count_main); | |
4282 | sm_info->ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); | |
58c41035 JK |
4283 | sm_info->rec_prefree_segments = sm_info->main_segments * |
4284 | DEF_RECLAIM_PREFREE_SEGMENTS / 100; | |
44a83499 JK |
4285 | if (sm_info->rec_prefree_segments > DEF_MAX_RECLAIM_PREFREE_SEGMENTS) |
4286 | sm_info->rec_prefree_segments = DEF_MAX_RECLAIM_PREFREE_SEGMENTS; | |
4287 | ||
52763a4b JK |
4288 | if (!test_opt(sbi, LFS)) |
4289 | sm_info->ipu_policy = 1 << F2FS_IPU_FSYNC; | |
216fbd64 | 4290 | sm_info->min_ipu_util = DEF_MIN_IPU_UTIL; |
c1ce1b02 | 4291 | sm_info->min_fsync_blocks = DEF_MIN_FSYNC_BLOCKS; |
853137ce | 4292 | sm_info->min_seq_blocks = sbi->blocks_per_seg * sbi->segs_per_sec; |
ef095d19 | 4293 | sm_info->min_hot_blocks = DEF_MIN_HOT_BLOCKS; |
a2a12b67 | 4294 | sm_info->min_ssr_sections = reserved_sections(sbi); |
351df4b2 | 4295 | |
184a5cd2 CY |
4296 | INIT_LIST_HEAD(&sm_info->sit_entry_set); |
4297 | ||
2b60311d CY |
4298 | init_rwsem(&sm_info->curseg_lock); |
4299 | ||
d4fdf8ba | 4300 | if (!f2fs_readonly(sbi->sb)) { |
4d57b86d | 4301 | err = f2fs_create_flush_cmd_control(sbi); |
2163d198 | 4302 | if (err) |
a688b9d9 | 4303 | return err; |
6b4afdd7 JK |
4304 | } |
4305 | ||
0b54fb84 JK |
4306 | err = create_discard_cmd_control(sbi); |
4307 | if (err) | |
4308 | return err; | |
4309 | ||
351df4b2 JK |
4310 | err = build_sit_info(sbi); |
4311 | if (err) | |
4312 | return err; | |
4313 | err = build_free_segmap(sbi); | |
4314 | if (err) | |
4315 | return err; | |
4316 | err = build_curseg(sbi); | |
4317 | if (err) | |
4318 | return err; | |
4319 | ||
4320 | /* reinit free segmap based on SIT */ | |
c39a1b34 JK |
4321 | err = build_sit_entries(sbi); |
4322 | if (err) | |
4323 | return err; | |
351df4b2 JK |
4324 | |
4325 | init_free_segmap(sbi); | |
4326 | err = build_dirty_segmap(sbi); | |
4327 | if (err) | |
4328 | return err; | |
4329 | ||
4330 | init_min_max_mtime(sbi); | |
4331 | return 0; | |
4332 | } | |
4333 | ||
4334 | static void discard_dirty_segmap(struct f2fs_sb_info *sbi, | |
4335 | enum dirty_type dirty_type) | |
4336 | { | |
4337 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
4338 | ||
4339 | mutex_lock(&dirty_i->seglist_lock); | |
39307a8e | 4340 | kvfree(dirty_i->dirty_segmap[dirty_type]); |
351df4b2 JK |
4341 | dirty_i->nr_dirty[dirty_type] = 0; |
4342 | mutex_unlock(&dirty_i->seglist_lock); | |
4343 | } | |
4344 | ||
5ec4e49f | 4345 | static void destroy_victim_secmap(struct f2fs_sb_info *sbi) |
351df4b2 JK |
4346 | { |
4347 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
39307a8e | 4348 | kvfree(dirty_i->victim_secmap); |
351df4b2 JK |
4349 | } |
4350 | ||
4351 | static void destroy_dirty_segmap(struct f2fs_sb_info *sbi) | |
4352 | { | |
4353 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
4354 | int i; | |
4355 | ||
4356 | if (!dirty_i) | |
4357 | return; | |
4358 | ||
4359 | /* discard pre-free/dirty segments list */ | |
4360 | for (i = 0; i < NR_DIRTY_TYPE; i++) | |
4361 | discard_dirty_segmap(sbi, i); | |
4362 | ||
5ec4e49f | 4363 | destroy_victim_secmap(sbi); |
351df4b2 | 4364 | SM_I(sbi)->dirty_info = NULL; |
5222595d | 4365 | kvfree(dirty_i); |
351df4b2 JK |
4366 | } |
4367 | ||
4368 | static void destroy_curseg(struct f2fs_sb_info *sbi) | |
4369 | { | |
4370 | struct curseg_info *array = SM_I(sbi)->curseg_array; | |
4371 | int i; | |
4372 | ||
4373 | if (!array) | |
4374 | return; | |
4375 | SM_I(sbi)->curseg_array = NULL; | |
b7ad7512 | 4376 | for (i = 0; i < NR_CURSEG_TYPE; i++) { |
5222595d JK |
4377 | kvfree(array[i].sum_blk); |
4378 | kvfree(array[i].journal); | |
b7ad7512 | 4379 | } |
5222595d | 4380 | kvfree(array); |
351df4b2 JK |
4381 | } |
4382 | ||
4383 | static void destroy_free_segmap(struct f2fs_sb_info *sbi) | |
4384 | { | |
4385 | struct free_segmap_info *free_i = SM_I(sbi)->free_info; | |
4386 | if (!free_i) | |
4387 | return; | |
4388 | SM_I(sbi)->free_info = NULL; | |
39307a8e JK |
4389 | kvfree(free_i->free_segmap); |
4390 | kvfree(free_i->free_secmap); | |
5222595d | 4391 | kvfree(free_i); |
351df4b2 JK |
4392 | } |
4393 | ||
4394 | static void destroy_sit_info(struct f2fs_sb_info *sbi) | |
4395 | { | |
4396 | struct sit_info *sit_i = SIT_I(sbi); | |
4397 | unsigned int start; | |
4398 | ||
4399 | if (!sit_i) | |
4400 | return; | |
4401 | ||
4402 | if (sit_i->sentries) { | |
7cd8558b | 4403 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
5222595d | 4404 | kvfree(sit_i->sentries[start].cur_valid_map); |
355e7891 | 4405 | #ifdef CONFIG_F2FS_CHECK_FS |
5222595d | 4406 | kvfree(sit_i->sentries[start].cur_valid_map_mir); |
355e7891 | 4407 | #endif |
5222595d JK |
4408 | kvfree(sit_i->sentries[start].ckpt_valid_map); |
4409 | kvfree(sit_i->sentries[start].discard_map); | |
351df4b2 JK |
4410 | } |
4411 | } | |
5222595d | 4412 | kvfree(sit_i->tmp_map); |
60a3b782 | 4413 | |
39307a8e JK |
4414 | kvfree(sit_i->sentries); |
4415 | kvfree(sit_i->sec_entries); | |
4416 | kvfree(sit_i->dirty_sentries_bitmap); | |
351df4b2 JK |
4417 | |
4418 | SM_I(sbi)->sit_info = NULL; | |
5222595d | 4419 | kvfree(sit_i->sit_bitmap); |
ae27d62e | 4420 | #ifdef CONFIG_F2FS_CHECK_FS |
5222595d | 4421 | kvfree(sit_i->sit_bitmap_mir); |
ae27d62e | 4422 | #endif |
5222595d | 4423 | kvfree(sit_i); |
351df4b2 JK |
4424 | } |
4425 | ||
4d57b86d | 4426 | void f2fs_destroy_segment_manager(struct f2fs_sb_info *sbi) |
351df4b2 JK |
4427 | { |
4428 | struct f2fs_sm_info *sm_info = SM_I(sbi); | |
a688b9d9 | 4429 | |
3b03f724 CY |
4430 | if (!sm_info) |
4431 | return; | |
4d57b86d | 4432 | f2fs_destroy_flush_cmd_control(sbi, true); |
f099405f | 4433 | destroy_discard_cmd_control(sbi); |
351df4b2 JK |
4434 | destroy_dirty_segmap(sbi); |
4435 | destroy_curseg(sbi); | |
4436 | destroy_free_segmap(sbi); | |
4437 | destroy_sit_info(sbi); | |
4438 | sbi->sm_info = NULL; | |
5222595d | 4439 | kvfree(sm_info); |
351df4b2 | 4440 | } |
7fd9e544 | 4441 | |
4d57b86d | 4442 | int __init f2fs_create_segment_manager_caches(void) |
7fd9e544 JK |
4443 | { |
4444 | discard_entry_slab = f2fs_kmem_cache_create("discard_entry", | |
e8512d2e | 4445 | sizeof(struct discard_entry)); |
7fd9e544 | 4446 | if (!discard_entry_slab) |
184a5cd2 CY |
4447 | goto fail; |
4448 | ||
b01a9201 JK |
4449 | discard_cmd_slab = f2fs_kmem_cache_create("discard_cmd", |
4450 | sizeof(struct discard_cmd)); | |
4451 | if (!discard_cmd_slab) | |
6ab2a308 | 4452 | goto destroy_discard_entry; |
275b66b0 | 4453 | |
184a5cd2 | 4454 | sit_entry_set_slab = f2fs_kmem_cache_create("sit_entry_set", |
c9ee0085 | 4455 | sizeof(struct sit_entry_set)); |
184a5cd2 | 4456 | if (!sit_entry_set_slab) |
b01a9201 | 4457 | goto destroy_discard_cmd; |
88b88a66 JK |
4458 | |
4459 | inmem_entry_slab = f2fs_kmem_cache_create("inmem_page_entry", | |
4460 | sizeof(struct inmem_pages)); | |
4461 | if (!inmem_entry_slab) | |
4462 | goto destroy_sit_entry_set; | |
7fd9e544 | 4463 | return 0; |
184a5cd2 | 4464 | |
88b88a66 JK |
4465 | destroy_sit_entry_set: |
4466 | kmem_cache_destroy(sit_entry_set_slab); | |
b01a9201 JK |
4467 | destroy_discard_cmd: |
4468 | kmem_cache_destroy(discard_cmd_slab); | |
6ab2a308 | 4469 | destroy_discard_entry: |
184a5cd2 CY |
4470 | kmem_cache_destroy(discard_entry_slab); |
4471 | fail: | |
4472 | return -ENOMEM; | |
7fd9e544 JK |
4473 | } |
4474 | ||
4d57b86d | 4475 | void f2fs_destroy_segment_manager_caches(void) |
7fd9e544 | 4476 | { |
184a5cd2 | 4477 | kmem_cache_destroy(sit_entry_set_slab); |
b01a9201 | 4478 | kmem_cache_destroy(discard_cmd_slab); |
7fd9e544 | 4479 | kmem_cache_destroy(discard_entry_slab); |
88b88a66 | 4480 | kmem_cache_destroy(inmem_entry_slab); |
7fd9e544 | 4481 | } |