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Commit | Line | Data |
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0a8165d7 | 1 | /* |
351df4b2 JK |
2 | * fs/f2fs/segment.c |
3 | * | |
4 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
5 | * http://www.samsung.com/ | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | #include <linux/fs.h> | |
12 | #include <linux/f2fs_fs.h> | |
13 | #include <linux/bio.h> | |
14 | #include <linux/blkdev.h> | |
690e4a3e | 15 | #include <linux/prefetch.h> |
6b4afdd7 | 16 | #include <linux/kthread.h> |
74de593a | 17 | #include <linux/swap.h> |
60b99b48 | 18 | #include <linux/timer.h> |
1d7be270 | 19 | #include <linux/freezer.h> |
1eb1ef4a | 20 | #include <linux/sched/signal.h> |
351df4b2 JK |
21 | |
22 | #include "f2fs.h" | |
23 | #include "segment.h" | |
24 | #include "node.h" | |
5f656541 | 25 | #include "gc.h" |
9e4ded3f | 26 | #include "trace.h" |
6ec178da | 27 | #include <trace/events/f2fs.h> |
351df4b2 | 28 | |
9a7f143a CL |
29 | #define __reverse_ffz(x) __reverse_ffs(~(x)) |
30 | ||
7fd9e544 | 31 | static struct kmem_cache *discard_entry_slab; |
b01a9201 | 32 | static struct kmem_cache *discard_cmd_slab; |
184a5cd2 | 33 | static struct kmem_cache *sit_entry_set_slab; |
88b88a66 | 34 | static struct kmem_cache *inmem_entry_slab; |
7fd9e544 | 35 | |
f96999c3 JK |
36 | static unsigned long __reverse_ulong(unsigned char *str) |
37 | { | |
38 | unsigned long tmp = 0; | |
39 | int shift = 24, idx = 0; | |
40 | ||
41 | #if BITS_PER_LONG == 64 | |
42 | shift = 56; | |
43 | #endif | |
44 | while (shift >= 0) { | |
45 | tmp |= (unsigned long)str[idx++] << shift; | |
46 | shift -= BITS_PER_BYTE; | |
47 | } | |
48 | return tmp; | |
49 | } | |
50 | ||
9a7f143a CL |
51 | /* |
52 | * __reverse_ffs is copied from include/asm-generic/bitops/__ffs.h since | |
53 | * MSB and LSB are reversed in a byte by f2fs_set_bit. | |
54 | */ | |
55 | static inline unsigned long __reverse_ffs(unsigned long word) | |
56 | { | |
57 | int num = 0; | |
58 | ||
59 | #if BITS_PER_LONG == 64 | |
f96999c3 | 60 | if ((word & 0xffffffff00000000UL) == 0) |
9a7f143a | 61 | num += 32; |
f96999c3 | 62 | else |
9a7f143a | 63 | word >>= 32; |
9a7f143a | 64 | #endif |
f96999c3 | 65 | if ((word & 0xffff0000) == 0) |
9a7f143a | 66 | num += 16; |
f96999c3 | 67 | else |
9a7f143a | 68 | word >>= 16; |
f96999c3 JK |
69 | |
70 | if ((word & 0xff00) == 0) | |
9a7f143a | 71 | num += 8; |
f96999c3 | 72 | else |
9a7f143a | 73 | word >>= 8; |
f96999c3 | 74 | |
9a7f143a CL |
75 | if ((word & 0xf0) == 0) |
76 | num += 4; | |
77 | else | |
78 | word >>= 4; | |
f96999c3 | 79 | |
9a7f143a CL |
80 | if ((word & 0xc) == 0) |
81 | num += 2; | |
82 | else | |
83 | word >>= 2; | |
f96999c3 | 84 | |
9a7f143a CL |
85 | if ((word & 0x2) == 0) |
86 | num += 1; | |
87 | return num; | |
88 | } | |
89 | ||
90 | /* | |
e1c42045 | 91 | * __find_rev_next(_zero)_bit is copied from lib/find_next_bit.c because |
9a7f143a | 92 | * f2fs_set_bit makes MSB and LSB reversed in a byte. |
692223d1 | 93 | * @size must be integral times of unsigned long. |
9a7f143a | 94 | * Example: |
f96999c3 JK |
95 | * MSB <--> LSB |
96 | * f2fs_set_bit(0, bitmap) => 1000 0000 | |
97 | * f2fs_set_bit(7, bitmap) => 0000 0001 | |
9a7f143a CL |
98 | */ |
99 | static unsigned long __find_rev_next_bit(const unsigned long *addr, | |
100 | unsigned long size, unsigned long offset) | |
101 | { | |
102 | const unsigned long *p = addr + BIT_WORD(offset); | |
692223d1 | 103 | unsigned long result = size; |
9a7f143a | 104 | unsigned long tmp; |
9a7f143a CL |
105 | |
106 | if (offset >= size) | |
107 | return size; | |
108 | ||
692223d1 | 109 | size -= (offset & ~(BITS_PER_LONG - 1)); |
9a7f143a | 110 | offset %= BITS_PER_LONG; |
f96999c3 | 111 | |
692223d1 FL |
112 | while (1) { |
113 | if (*p == 0) | |
114 | goto pass; | |
9a7f143a | 115 | |
f96999c3 | 116 | tmp = __reverse_ulong((unsigned char *)p); |
692223d1 FL |
117 | |
118 | tmp &= ~0UL >> offset; | |
119 | if (size < BITS_PER_LONG) | |
120 | tmp &= (~0UL << (BITS_PER_LONG - size)); | |
9a7f143a | 121 | if (tmp) |
692223d1 FL |
122 | goto found; |
123 | pass: | |
124 | if (size <= BITS_PER_LONG) | |
125 | break; | |
9a7f143a | 126 | size -= BITS_PER_LONG; |
692223d1 | 127 | offset = 0; |
f96999c3 | 128 | p++; |
9a7f143a | 129 | } |
692223d1 FL |
130 | return result; |
131 | found: | |
132 | return result - size + __reverse_ffs(tmp); | |
9a7f143a CL |
133 | } |
134 | ||
135 | static unsigned long __find_rev_next_zero_bit(const unsigned long *addr, | |
136 | unsigned long size, unsigned long offset) | |
137 | { | |
138 | const unsigned long *p = addr + BIT_WORD(offset); | |
80609448 | 139 | unsigned long result = size; |
9a7f143a | 140 | unsigned long tmp; |
9a7f143a CL |
141 | |
142 | if (offset >= size) | |
143 | return size; | |
144 | ||
80609448 | 145 | size -= (offset & ~(BITS_PER_LONG - 1)); |
9a7f143a | 146 | offset %= BITS_PER_LONG; |
80609448 JK |
147 | |
148 | while (1) { | |
149 | if (*p == ~0UL) | |
150 | goto pass; | |
151 | ||
f96999c3 | 152 | tmp = __reverse_ulong((unsigned char *)p); |
80609448 JK |
153 | |
154 | if (offset) | |
155 | tmp |= ~0UL << (BITS_PER_LONG - offset); | |
156 | if (size < BITS_PER_LONG) | |
157 | tmp |= ~0UL >> size; | |
f96999c3 | 158 | if (tmp != ~0UL) |
80609448 JK |
159 | goto found; |
160 | pass: | |
161 | if (size <= BITS_PER_LONG) | |
162 | break; | |
9a7f143a | 163 | size -= BITS_PER_LONG; |
80609448 | 164 | offset = 0; |
f96999c3 | 165 | p++; |
9a7f143a | 166 | } |
80609448 JK |
167 | return result; |
168 | found: | |
169 | return result - size + __reverse_ffz(tmp); | |
9a7f143a CL |
170 | } |
171 | ||
b3a97a2a JK |
172 | bool need_SSR(struct f2fs_sb_info *sbi) |
173 | { | |
174 | int node_secs = get_blocktype_secs(sbi, F2FS_DIRTY_NODES); | |
175 | int dent_secs = get_blocktype_secs(sbi, F2FS_DIRTY_DENTS); | |
176 | int imeta_secs = get_blocktype_secs(sbi, F2FS_DIRTY_IMETA); | |
177 | ||
178 | if (test_opt(sbi, LFS)) | |
179 | return false; | |
180 | if (sbi->gc_thread && sbi->gc_thread->gc_urgent) | |
181 | return true; | |
182 | ||
183 | return free_sections(sbi) <= (node_secs + 2 * dent_secs + imeta_secs + | |
a2a12b67 | 184 | SM_I(sbi)->min_ssr_sections + reserved_sections(sbi)); |
b3a97a2a JK |
185 | } |
186 | ||
88b88a66 JK |
187 | void register_inmem_page(struct inode *inode, struct page *page) |
188 | { | |
57864ae5 | 189 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
88b88a66 JK |
190 | struct f2fs_inode_info *fi = F2FS_I(inode); |
191 | struct inmem_pages *new; | |
9be32d72 | 192 | |
9e4ded3f | 193 | f2fs_trace_pid(page); |
0722b101 | 194 | |
decd36b6 CY |
195 | set_page_private(page, (unsigned long)ATOMIC_WRITTEN_PAGE); |
196 | SetPagePrivate(page); | |
197 | ||
88b88a66 JK |
198 | new = f2fs_kmem_cache_alloc(inmem_entry_slab, GFP_NOFS); |
199 | ||
200 | /* add atomic page indices to the list */ | |
201 | new->page = page; | |
202 | INIT_LIST_HEAD(&new->list); | |
decd36b6 | 203 | |
88b88a66 JK |
204 | /* increase reference count with clean state */ |
205 | mutex_lock(&fi->inmem_lock); | |
206 | get_page(page); | |
207 | list_add_tail(&new->list, &fi->inmem_pages); | |
57864ae5 JK |
208 | spin_lock(&sbi->inode_lock[ATOMIC_FILE]); |
209 | if (list_empty(&fi->inmem_ilist)) | |
210 | list_add_tail(&fi->inmem_ilist, &sbi->inode_list[ATOMIC_FILE]); | |
211 | spin_unlock(&sbi->inode_lock[ATOMIC_FILE]); | |
8dcf2ff7 | 212 | inc_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES); |
88b88a66 | 213 | mutex_unlock(&fi->inmem_lock); |
8ce67cb0 JK |
214 | |
215 | trace_f2fs_register_inmem_page(page, INMEM); | |
88b88a66 JK |
216 | } |
217 | ||
28bc106b CY |
218 | static int __revoke_inmem_pages(struct inode *inode, |
219 | struct list_head *head, bool drop, bool recover) | |
29b96b54 | 220 | { |
28bc106b | 221 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
29b96b54 | 222 | struct inmem_pages *cur, *tmp; |
28bc106b | 223 | int err = 0; |
29b96b54 CY |
224 | |
225 | list_for_each_entry_safe(cur, tmp, head, list) { | |
28bc106b CY |
226 | struct page *page = cur->page; |
227 | ||
228 | if (drop) | |
229 | trace_f2fs_commit_inmem_page(page, INMEM_DROP); | |
230 | ||
231 | lock_page(page); | |
29b96b54 | 232 | |
28bc106b CY |
233 | if (recover) { |
234 | struct dnode_of_data dn; | |
235 | struct node_info ni; | |
236 | ||
237 | trace_f2fs_commit_inmem_page(page, INMEM_REVOKE); | |
7f2b4e8e | 238 | retry: |
28bc106b | 239 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
7f2b4e8e CY |
240 | err = get_dnode_of_data(&dn, page->index, LOOKUP_NODE); |
241 | if (err) { | |
242 | if (err == -ENOMEM) { | |
243 | congestion_wait(BLK_RW_ASYNC, HZ/50); | |
244 | cond_resched(); | |
245 | goto retry; | |
246 | } | |
28bc106b CY |
247 | err = -EAGAIN; |
248 | goto next; | |
249 | } | |
250 | get_node_info(sbi, dn.nid, &ni); | |
f1d2564a DJ |
251 | if (cur->old_addr == NEW_ADDR) { |
252 | invalidate_blocks(sbi, dn.data_blkaddr); | |
253 | f2fs_update_data_blkaddr(&dn, NEW_ADDR); | |
254 | } else | |
255 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, | |
28bc106b CY |
256 | cur->old_addr, ni.version, true, true); |
257 | f2fs_put_dnode(&dn); | |
258 | } | |
259 | next: | |
63c52d78 JK |
260 | /* we don't need to invalidate this in the sccessful status */ |
261 | if (drop || recover) | |
262 | ClearPageUptodate(page); | |
28bc106b | 263 | set_page_private(page, 0); |
c81ced05 | 264 | ClearPagePrivate(page); |
28bc106b | 265 | f2fs_put_page(page, 1); |
29b96b54 CY |
266 | |
267 | list_del(&cur->list); | |
268 | kmem_cache_free(inmem_entry_slab, cur); | |
269 | dec_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES); | |
270 | } | |
28bc106b | 271 | return err; |
29b96b54 CY |
272 | } |
273 | ||
57864ae5 JK |
274 | void drop_inmem_pages_all(struct f2fs_sb_info *sbi) |
275 | { | |
276 | struct list_head *head = &sbi->inode_list[ATOMIC_FILE]; | |
277 | struct inode *inode; | |
278 | struct f2fs_inode_info *fi; | |
279 | next: | |
280 | spin_lock(&sbi->inode_lock[ATOMIC_FILE]); | |
281 | if (list_empty(head)) { | |
282 | spin_unlock(&sbi->inode_lock[ATOMIC_FILE]); | |
283 | return; | |
284 | } | |
285 | fi = list_first_entry(head, struct f2fs_inode_info, inmem_ilist); | |
286 | inode = igrab(&fi->vfs_inode); | |
287 | spin_unlock(&sbi->inode_lock[ATOMIC_FILE]); | |
288 | ||
289 | if (inode) { | |
290 | drop_inmem_pages(inode); | |
291 | iput(inode); | |
292 | } | |
293 | congestion_wait(BLK_RW_ASYNC, HZ/50); | |
294 | cond_resched(); | |
295 | goto next; | |
296 | } | |
297 | ||
29b96b54 CY |
298 | void drop_inmem_pages(struct inode *inode) |
299 | { | |
57864ae5 | 300 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
29b96b54 CY |
301 | struct f2fs_inode_info *fi = F2FS_I(inode); |
302 | ||
303 | mutex_lock(&fi->inmem_lock); | |
28bc106b | 304 | __revoke_inmem_pages(inode, &fi->inmem_pages, true, false); |
57864ae5 JK |
305 | spin_lock(&sbi->inode_lock[ATOMIC_FILE]); |
306 | if (!list_empty(&fi->inmem_ilist)) | |
307 | list_del_init(&fi->inmem_ilist); | |
308 | spin_unlock(&sbi->inode_lock[ATOMIC_FILE]); | |
29b96b54 | 309 | mutex_unlock(&fi->inmem_lock); |
5fe45743 CY |
310 | |
311 | clear_inode_flag(inode, FI_ATOMIC_FILE); | |
84a23fbe | 312 | clear_inode_flag(inode, FI_HOT_DATA); |
5fe45743 | 313 | stat_dec_atomic_write(inode); |
29b96b54 CY |
314 | } |
315 | ||
8c242db9 JK |
316 | void drop_inmem_page(struct inode *inode, struct page *page) |
317 | { | |
318 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
319 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
320 | struct list_head *head = &fi->inmem_pages; | |
321 | struct inmem_pages *cur = NULL; | |
322 | ||
323 | f2fs_bug_on(sbi, !IS_ATOMIC_WRITTEN_PAGE(page)); | |
324 | ||
325 | mutex_lock(&fi->inmem_lock); | |
326 | list_for_each_entry(cur, head, list) { | |
327 | if (cur->page == page) | |
328 | break; | |
329 | } | |
330 | ||
331 | f2fs_bug_on(sbi, !cur || cur->page != page); | |
332 | list_del(&cur->list); | |
333 | mutex_unlock(&fi->inmem_lock); | |
334 | ||
335 | dec_page_count(sbi, F2FS_INMEM_PAGES); | |
336 | kmem_cache_free(inmem_entry_slab, cur); | |
337 | ||
338 | ClearPageUptodate(page); | |
339 | set_page_private(page, 0); | |
340 | ClearPagePrivate(page); | |
341 | f2fs_put_page(page, 0); | |
342 | ||
343 | trace_f2fs_commit_inmem_page(page, INMEM_INVALIDATE); | |
344 | } | |
345 | ||
28bc106b CY |
346 | static int __commit_inmem_pages(struct inode *inode, |
347 | struct list_head *revoke_list) | |
88b88a66 JK |
348 | { |
349 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
350 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
351 | struct inmem_pages *cur, *tmp; | |
88b88a66 | 352 | struct f2fs_io_info fio = { |
05ca3632 | 353 | .sbi = sbi, |
39d787be | 354 | .ino = inode->i_ino, |
88b88a66 | 355 | .type = DATA, |
04d328de | 356 | .op = REQ_OP_WRITE, |
70fd7614 | 357 | .op_flags = REQ_SYNC | REQ_PRIO, |
b0af6d49 | 358 | .io_type = FS_DATA_IO, |
88b88a66 | 359 | }; |
942fd319 | 360 | pgoff_t last_idx = ULONG_MAX; |
edb27dee | 361 | int err = 0; |
88b88a66 | 362 | |
88b88a66 | 363 | list_for_each_entry_safe(cur, tmp, &fi->inmem_pages, list) { |
28bc106b CY |
364 | struct page *page = cur->page; |
365 | ||
366 | lock_page(page); | |
367 | if (page->mapping == inode->i_mapping) { | |
368 | trace_f2fs_commit_inmem_page(page, INMEM); | |
369 | ||
370 | set_page_dirty(page); | |
371 | f2fs_wait_on_page_writeback(page, DATA, true); | |
933439c8 | 372 | if (clear_page_dirty_for_io(page)) { |
29b96b54 | 373 | inode_dec_dirty_pages(inode); |
933439c8 CY |
374 | remove_dirty_inode(inode); |
375 | } | |
640cc189 | 376 | retry: |
28bc106b | 377 | fio.page = page; |
e959c8f5 | 378 | fio.old_blkaddr = NULL_ADDR; |
4d978078 | 379 | fio.encrypted_page = NULL; |
cc15620b | 380 | fio.need_lock = LOCK_DONE; |
29b96b54 CY |
381 | err = do_write_data_page(&fio); |
382 | if (err) { | |
640cc189 JK |
383 | if (err == -ENOMEM) { |
384 | congestion_wait(BLK_RW_ASYNC, HZ/50); | |
385 | cond_resched(); | |
386 | goto retry; | |
387 | } | |
28bc106b | 388 | unlock_page(page); |
29b96b54 | 389 | break; |
70c640b1 | 390 | } |
28bc106b CY |
391 | /* record old blkaddr for revoking */ |
392 | cur->old_addr = fio.old_blkaddr; | |
942fd319 | 393 | last_idx = page->index; |
28bc106b CY |
394 | } |
395 | unlock_page(page); | |
396 | list_move_tail(&cur->list, revoke_list); | |
88b88a66 | 397 | } |
29b96b54 | 398 | |
942fd319 | 399 | if (last_idx != ULONG_MAX) |
b9109b0e | 400 | f2fs_submit_merged_write_cond(sbi, inode, 0, last_idx, DATA); |
28bc106b CY |
401 | |
402 | if (!err) | |
403 | __revoke_inmem_pages(inode, revoke_list, false, false); | |
404 | ||
29b96b54 CY |
405 | return err; |
406 | } | |
407 | ||
408 | int commit_inmem_pages(struct inode *inode) | |
409 | { | |
410 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
411 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
28bc106b CY |
412 | struct list_head revoke_list; |
413 | int err; | |
29b96b54 | 414 | |
28bc106b | 415 | INIT_LIST_HEAD(&revoke_list); |
29b96b54 CY |
416 | f2fs_balance_fs(sbi, true); |
417 | f2fs_lock_op(sbi); | |
418 | ||
5fe45743 CY |
419 | set_inode_flag(inode, FI_ATOMIC_COMMIT); |
420 | ||
29b96b54 | 421 | mutex_lock(&fi->inmem_lock); |
28bc106b CY |
422 | err = __commit_inmem_pages(inode, &revoke_list); |
423 | if (err) { | |
424 | int ret; | |
425 | /* | |
426 | * try to revoke all committed pages, but still we could fail | |
427 | * due to no memory or other reason, if that happened, EAGAIN | |
428 | * will be returned, which means in such case, transaction is | |
429 | * already not integrity, caller should use journal to do the | |
430 | * recovery or rewrite & commit last transaction. For other | |
431 | * error number, revoking was done by filesystem itself. | |
432 | */ | |
433 | ret = __revoke_inmem_pages(inode, &revoke_list, false, true); | |
434 | if (ret) | |
435 | err = ret; | |
436 | ||
437 | /* drop all uncommitted pages */ | |
438 | __revoke_inmem_pages(inode, &fi->inmem_pages, true, false); | |
439 | } | |
57864ae5 JK |
440 | spin_lock(&sbi->inode_lock[ATOMIC_FILE]); |
441 | if (!list_empty(&fi->inmem_ilist)) | |
442 | list_del_init(&fi->inmem_ilist); | |
443 | spin_unlock(&sbi->inode_lock[ATOMIC_FILE]); | |
88b88a66 JK |
444 | mutex_unlock(&fi->inmem_lock); |
445 | ||
5fe45743 CY |
446 | clear_inode_flag(inode, FI_ATOMIC_COMMIT); |
447 | ||
29b96b54 | 448 | f2fs_unlock_op(sbi); |
edb27dee | 449 | return err; |
88b88a66 JK |
450 | } |
451 | ||
0a8165d7 | 452 | /* |
351df4b2 JK |
453 | * This function balances dirty node and dentry pages. |
454 | * In addition, it controls garbage collection. | |
455 | */ | |
2c4db1a6 | 456 | void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need) |
351df4b2 | 457 | { |
0f348028 | 458 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
55523519 CY |
459 | if (time_to_inject(sbi, FAULT_CHECKPOINT)) { |
460 | f2fs_show_injection_info(FAULT_CHECKPOINT); | |
0f348028 | 461 | f2fs_stop_checkpoint(sbi, false); |
55523519 | 462 | } |
0f348028 CY |
463 | #endif |
464 | ||
e589c2c4 | 465 | /* balance_fs_bg is able to be pending */ |
a7881893 | 466 | if (need && excess_cached_nats(sbi)) |
e589c2c4 JK |
467 | f2fs_balance_fs_bg(sbi); |
468 | ||
351df4b2 | 469 | /* |
029cd28c JK |
470 | * We should do GC or end up with checkpoint, if there are so many dirty |
471 | * dir/node pages without enough free segments. | |
351df4b2 | 472 | */ |
7f3037a5 | 473 | if (has_not_enough_free_secs(sbi, 0, 0)) { |
351df4b2 | 474 | mutex_lock(&sbi->gc_mutex); |
e066b83c | 475 | f2fs_gc(sbi, false, false, NULL_SEGNO); |
351df4b2 JK |
476 | } |
477 | } | |
478 | ||
4660f9c0 JK |
479 | void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi) |
480 | { | |
1dcc336b | 481 | /* try to shrink extent cache when there is no enough memory */ |
554df79e JK |
482 | if (!available_free_memory(sbi, EXTENT_CACHE)) |
483 | f2fs_shrink_extent_tree(sbi, EXTENT_CACHE_SHRINK_NUMBER); | |
1dcc336b | 484 | |
1b38dc8e JK |
485 | /* check the # of cached NAT entries */ |
486 | if (!available_free_memory(sbi, NAT_ENTRIES)) | |
487 | try_to_free_nats(sbi, NAT_ENTRY_PER_BLOCK); | |
488 | ||
31696580 | 489 | if (!available_free_memory(sbi, FREE_NIDS)) |
ad4edb83 JK |
490 | try_to_free_nids(sbi, MAX_FREE_NIDS); |
491 | else | |
22ad0b6a | 492 | build_free_nids(sbi, false, false); |
31696580 | 493 | |
1c0f4bf5 | 494 | if (!is_idle(sbi) && !excess_dirty_nats(sbi)) |
f455c8a5 | 495 | return; |
31696580 | 496 | |
1b38dc8e JK |
497 | /* checkpoint is the only way to shrink partial cached entries */ |
498 | if (!available_free_memory(sbi, NAT_ENTRIES) || | |
60b99b48 | 499 | !available_free_memory(sbi, INO_ENTRIES) || |
7d768d2c CY |
500 | excess_prefree_segs(sbi) || |
501 | excess_dirty_nats(sbi) || | |
f455c8a5 | 502 | f2fs_time_over(sbi, CP_TIME)) { |
e9f5b8b8 CY |
503 | if (test_opt(sbi, DATA_FLUSH)) { |
504 | struct blk_plug plug; | |
505 | ||
506 | blk_start_plug(&plug); | |
36b35a0d | 507 | sync_dirty_inodes(sbi, FILE_INODE); |
e9f5b8b8 CY |
508 | blk_finish_plug(&plug); |
509 | } | |
4660f9c0 | 510 | f2fs_sync_fs(sbi->sb, true); |
42190d2a | 511 | stat_inc_bg_cp_count(sbi->stat_info); |
36b35a0d | 512 | } |
4660f9c0 JK |
513 | } |
514 | ||
20fda56b KM |
515 | static int __submit_flush_wait(struct f2fs_sb_info *sbi, |
516 | struct block_device *bdev) | |
3c62be17 | 517 | { |
d62fe971 | 518 | struct bio *bio = f2fs_bio_alloc(sbi, 0, true); |
3c62be17 JK |
519 | int ret; |
520 | ||
3adc5fcb | 521 | bio->bi_opf = REQ_OP_WRITE | REQ_SYNC | REQ_PREFLUSH; |
74d46992 | 522 | bio_set_dev(bio, bdev); |
3c62be17 JK |
523 | ret = submit_bio_wait(bio); |
524 | bio_put(bio); | |
20fda56b KM |
525 | |
526 | trace_f2fs_issue_flush(bdev, test_opt(sbi, NOBARRIER), | |
527 | test_opt(sbi, FLUSH_MERGE), ret); | |
3c62be17 JK |
528 | return ret; |
529 | } | |
530 | ||
39d787be | 531 | static int submit_flush_wait(struct f2fs_sb_info *sbi, nid_t ino) |
3c62be17 | 532 | { |
39d787be | 533 | int ret = 0; |
3c62be17 JK |
534 | int i; |
535 | ||
39d787be CY |
536 | if (!sbi->s_ndevs) |
537 | return __submit_flush_wait(sbi, sbi->sb->s_bdev); | |
20fda56b | 538 | |
39d787be CY |
539 | for (i = 0; i < sbi->s_ndevs; i++) { |
540 | if (!is_dirty_device(sbi, ino, i, FLUSH_INO)) | |
541 | continue; | |
20fda56b KM |
542 | ret = __submit_flush_wait(sbi, FDEV(i).bdev); |
543 | if (ret) | |
544 | break; | |
3c62be17 JK |
545 | } |
546 | return ret; | |
547 | } | |
548 | ||
2163d198 | 549 | static int issue_flush_thread(void *data) |
6b4afdd7 JK |
550 | { |
551 | struct f2fs_sb_info *sbi = data; | |
b01a9201 | 552 | struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info; |
a688b9d9 | 553 | wait_queue_head_t *q = &fcc->flush_wait_queue; |
6b4afdd7 JK |
554 | repeat: |
555 | if (kthread_should_stop()) | |
556 | return 0; | |
557 | ||
dc6febb6 CY |
558 | sb_start_intwrite(sbi->sb); |
559 | ||
721bd4d5 | 560 | if (!llist_empty(&fcc->issue_list)) { |
6b4afdd7 JK |
561 | struct flush_cmd *cmd, *next; |
562 | int ret; | |
563 | ||
721bd4d5 GZ |
564 | fcc->dispatch_list = llist_del_all(&fcc->issue_list); |
565 | fcc->dispatch_list = llist_reverse_order(fcc->dispatch_list); | |
566 | ||
39d787be CY |
567 | cmd = llist_entry(fcc->dispatch_list, struct flush_cmd, llnode); |
568 | ||
569 | ret = submit_flush_wait(sbi, cmd->ino); | |
8b8dd65f CY |
570 | atomic_inc(&fcc->issued_flush); |
571 | ||
721bd4d5 GZ |
572 | llist_for_each_entry_safe(cmd, next, |
573 | fcc->dispatch_list, llnode) { | |
6b4afdd7 | 574 | cmd->ret = ret; |
6b4afdd7 JK |
575 | complete(&cmd->wait); |
576 | } | |
a688b9d9 | 577 | fcc->dispatch_list = NULL; |
6b4afdd7 JK |
578 | } |
579 | ||
dc6febb6 CY |
580 | sb_end_intwrite(sbi->sb); |
581 | ||
a688b9d9 | 582 | wait_event_interruptible(*q, |
721bd4d5 | 583 | kthread_should_stop() || !llist_empty(&fcc->issue_list)); |
6b4afdd7 JK |
584 | goto repeat; |
585 | } | |
586 | ||
39d787be | 587 | int f2fs_issue_flush(struct f2fs_sb_info *sbi, nid_t ino) |
6b4afdd7 | 588 | { |
b01a9201 | 589 | struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info; |
adf8d90b | 590 | struct flush_cmd cmd; |
8b8dd65f | 591 | int ret; |
6b4afdd7 | 592 | |
0f7b2abd JK |
593 | if (test_opt(sbi, NOBARRIER)) |
594 | return 0; | |
595 | ||
8b8dd65f | 596 | if (!test_opt(sbi, FLUSH_MERGE)) { |
39d787be | 597 | ret = submit_flush_wait(sbi, ino); |
8b8dd65f CY |
598 | atomic_inc(&fcc->issued_flush); |
599 | return ret; | |
600 | } | |
740432f8 | 601 | |
39d787be CY |
602 | if (atomic_inc_return(&fcc->issing_flush) == 1 || sbi->s_ndevs > 1) { |
603 | ret = submit_flush_wait(sbi, ino); | |
8b8dd65f CY |
604 | atomic_dec(&fcc->issing_flush); |
605 | ||
606 | atomic_inc(&fcc->issued_flush); | |
740432f8 JK |
607 | return ret; |
608 | } | |
6b4afdd7 | 609 | |
39d787be | 610 | cmd.ino = ino; |
adf8d90b | 611 | init_completion(&cmd.wait); |
6b4afdd7 | 612 | |
721bd4d5 | 613 | llist_add(&cmd.llnode, &fcc->issue_list); |
6b4afdd7 | 614 | |
6f890df0 CY |
615 | /* update issue_list before we wake up issue_flush thread */ |
616 | smp_mb(); | |
617 | ||
618 | if (waitqueue_active(&fcc->flush_wait_queue)) | |
a688b9d9 | 619 | wake_up(&fcc->flush_wait_queue); |
6b4afdd7 | 620 | |
5eba8c5d JK |
621 | if (fcc->f2fs_issue_flush) { |
622 | wait_for_completion(&cmd.wait); | |
8b8dd65f | 623 | atomic_dec(&fcc->issing_flush); |
5eba8c5d | 624 | } else { |
d3238691 CY |
625 | struct llist_node *list; |
626 | ||
627 | list = llist_del_all(&fcc->issue_list); | |
628 | if (!list) { | |
629 | wait_for_completion(&cmd.wait); | |
630 | atomic_dec(&fcc->issing_flush); | |
631 | } else { | |
632 | struct flush_cmd *tmp, *next; | |
633 | ||
39d787be | 634 | ret = submit_flush_wait(sbi, ino); |
d3238691 CY |
635 | |
636 | llist_for_each_entry_safe(tmp, next, list, llnode) { | |
637 | if (tmp == &cmd) { | |
638 | cmd.ret = ret; | |
639 | atomic_dec(&fcc->issing_flush); | |
640 | continue; | |
641 | } | |
642 | tmp->ret = ret; | |
643 | complete(&tmp->wait); | |
644 | } | |
645 | } | |
5eba8c5d | 646 | } |
adf8d90b CY |
647 | |
648 | return cmd.ret; | |
6b4afdd7 JK |
649 | } |
650 | ||
2163d198 GZ |
651 | int create_flush_cmd_control(struct f2fs_sb_info *sbi) |
652 | { | |
653 | dev_t dev = sbi->sb->s_bdev->bd_dev; | |
654 | struct flush_cmd_control *fcc; | |
655 | int err = 0; | |
656 | ||
b01a9201 JK |
657 | if (SM_I(sbi)->fcc_info) { |
658 | fcc = SM_I(sbi)->fcc_info; | |
d871cd04 YS |
659 | if (fcc->f2fs_issue_flush) |
660 | return err; | |
5eba8c5d JK |
661 | goto init_thread; |
662 | } | |
663 | ||
acbf054d | 664 | fcc = f2fs_kzalloc(sbi, sizeof(struct flush_cmd_control), GFP_KERNEL); |
2163d198 GZ |
665 | if (!fcc) |
666 | return -ENOMEM; | |
8b8dd65f CY |
667 | atomic_set(&fcc->issued_flush, 0); |
668 | atomic_set(&fcc->issing_flush, 0); | |
2163d198 | 669 | init_waitqueue_head(&fcc->flush_wait_queue); |
721bd4d5 | 670 | init_llist_head(&fcc->issue_list); |
b01a9201 | 671 | SM_I(sbi)->fcc_info = fcc; |
d4fdf8ba YH |
672 | if (!test_opt(sbi, FLUSH_MERGE)) |
673 | return err; | |
674 | ||
5eba8c5d | 675 | init_thread: |
2163d198 GZ |
676 | fcc->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi, |
677 | "f2fs_flush-%u:%u", MAJOR(dev), MINOR(dev)); | |
678 | if (IS_ERR(fcc->f2fs_issue_flush)) { | |
679 | err = PTR_ERR(fcc->f2fs_issue_flush); | |
680 | kfree(fcc); | |
b01a9201 | 681 | SM_I(sbi)->fcc_info = NULL; |
2163d198 GZ |
682 | return err; |
683 | } | |
2163d198 GZ |
684 | |
685 | return err; | |
686 | } | |
687 | ||
5eba8c5d | 688 | void destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free) |
2163d198 | 689 | { |
b01a9201 | 690 | struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info; |
2163d198 | 691 | |
5eba8c5d JK |
692 | if (fcc && fcc->f2fs_issue_flush) { |
693 | struct task_struct *flush_thread = fcc->f2fs_issue_flush; | |
694 | ||
695 | fcc->f2fs_issue_flush = NULL; | |
696 | kthread_stop(flush_thread); | |
697 | } | |
698 | if (free) { | |
699 | kfree(fcc); | |
b01a9201 | 700 | SM_I(sbi)->fcc_info = NULL; |
5eba8c5d | 701 | } |
2163d198 GZ |
702 | } |
703 | ||
1228b482 CY |
704 | int f2fs_flush_device_cache(struct f2fs_sb_info *sbi) |
705 | { | |
706 | int ret = 0, i; | |
707 | ||
708 | if (!sbi->s_ndevs) | |
709 | return 0; | |
710 | ||
711 | for (i = 1; i < sbi->s_ndevs; i++) { | |
712 | if (!f2fs_test_bit(i, (char *)&sbi->dirty_device)) | |
713 | continue; | |
714 | ret = __submit_flush_wait(sbi, FDEV(i).bdev); | |
715 | if (ret) | |
716 | break; | |
717 | ||
718 | spin_lock(&sbi->dev_lock); | |
719 | f2fs_clear_bit(i, (char *)&sbi->dirty_device); | |
720 | spin_unlock(&sbi->dev_lock); | |
721 | } | |
722 | ||
723 | return ret; | |
724 | } | |
725 | ||
351df4b2 JK |
726 | static void __locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno, |
727 | enum dirty_type dirty_type) | |
728 | { | |
729 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
730 | ||
731 | /* need not be added */ | |
732 | if (IS_CURSEG(sbi, segno)) | |
733 | return; | |
734 | ||
735 | if (!test_and_set_bit(segno, dirty_i->dirty_segmap[dirty_type])) | |
736 | dirty_i->nr_dirty[dirty_type]++; | |
737 | ||
738 | if (dirty_type == DIRTY) { | |
739 | struct seg_entry *sentry = get_seg_entry(sbi, segno); | |
4625d6aa | 740 | enum dirty_type t = sentry->type; |
b2f2c390 | 741 | |
ec325b52 JK |
742 | if (unlikely(t >= DIRTY)) { |
743 | f2fs_bug_on(sbi, 1); | |
744 | return; | |
745 | } | |
4625d6aa CL |
746 | if (!test_and_set_bit(segno, dirty_i->dirty_segmap[t])) |
747 | dirty_i->nr_dirty[t]++; | |
351df4b2 JK |
748 | } |
749 | } | |
750 | ||
751 | static void __remove_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno, | |
752 | enum dirty_type dirty_type) | |
753 | { | |
754 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
755 | ||
756 | if (test_and_clear_bit(segno, dirty_i->dirty_segmap[dirty_type])) | |
757 | dirty_i->nr_dirty[dirty_type]--; | |
758 | ||
759 | if (dirty_type == DIRTY) { | |
4625d6aa CL |
760 | struct seg_entry *sentry = get_seg_entry(sbi, segno); |
761 | enum dirty_type t = sentry->type; | |
762 | ||
763 | if (test_and_clear_bit(segno, dirty_i->dirty_segmap[t])) | |
764 | dirty_i->nr_dirty[t]--; | |
b2f2c390 | 765 | |
302bd348 | 766 | if (get_valid_blocks(sbi, segno, true) == 0) |
4ddb1a4d | 767 | clear_bit(GET_SEC_FROM_SEG(sbi, segno), |
5ec4e49f | 768 | dirty_i->victim_secmap); |
351df4b2 JK |
769 | } |
770 | } | |
771 | ||
0a8165d7 | 772 | /* |
351df4b2 JK |
773 | * Should not occur error such as -ENOMEM. |
774 | * Adding dirty entry into seglist is not critical operation. | |
775 | * If a given segment is one of current working segments, it won't be added. | |
776 | */ | |
8d8451af | 777 | static void locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno) |
351df4b2 JK |
778 | { |
779 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
780 | unsigned short valid_blocks; | |
781 | ||
782 | if (segno == NULL_SEGNO || IS_CURSEG(sbi, segno)) | |
783 | return; | |
784 | ||
785 | mutex_lock(&dirty_i->seglist_lock); | |
786 | ||
302bd348 | 787 | valid_blocks = get_valid_blocks(sbi, segno, false); |
351df4b2 JK |
788 | |
789 | if (valid_blocks == 0) { | |
790 | __locate_dirty_segment(sbi, segno, PRE); | |
791 | __remove_dirty_segment(sbi, segno, DIRTY); | |
792 | } else if (valid_blocks < sbi->blocks_per_seg) { | |
793 | __locate_dirty_segment(sbi, segno, DIRTY); | |
794 | } else { | |
795 | /* Recovery routine with SSR needs this */ | |
796 | __remove_dirty_segment(sbi, segno, DIRTY); | |
797 | } | |
798 | ||
799 | mutex_unlock(&dirty_i->seglist_lock); | |
351df4b2 JK |
800 | } |
801 | ||
004b6862 | 802 | static struct discard_cmd *__create_discard_cmd(struct f2fs_sb_info *sbi, |
c81abe34 JK |
803 | struct block_device *bdev, block_t lstart, |
804 | block_t start, block_t len) | |
275b66b0 | 805 | { |
0b54fb84 | 806 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
ba48a33e | 807 | struct list_head *pend_list; |
b01a9201 | 808 | struct discard_cmd *dc; |
275b66b0 | 809 | |
ba48a33e CY |
810 | f2fs_bug_on(sbi, !len); |
811 | ||
812 | pend_list = &dcc->pend_list[plist_idx(len)]; | |
813 | ||
b01a9201 JK |
814 | dc = f2fs_kmem_cache_alloc(discard_cmd_slab, GFP_NOFS); |
815 | INIT_LIST_HEAD(&dc->list); | |
c81abe34 | 816 | dc->bdev = bdev; |
b01a9201 | 817 | dc->lstart = lstart; |
c81abe34 | 818 | dc->start = start; |
b01a9201 | 819 | dc->len = len; |
ec9895ad | 820 | dc->ref = 0; |
15469963 | 821 | dc->state = D_PREP; |
c81abe34 | 822 | dc->error = 0; |
b01a9201 | 823 | init_completion(&dc->wait); |
22d375dd | 824 | list_add_tail(&dc->list, pend_list); |
5f32366a | 825 | atomic_inc(&dcc->discard_cmd_cnt); |
d84d1cbd | 826 | dcc->undiscard_blks += len; |
004b6862 CY |
827 | |
828 | return dc; | |
829 | } | |
830 | ||
831 | static struct discard_cmd *__attach_discard_cmd(struct f2fs_sb_info *sbi, | |
832 | struct block_device *bdev, block_t lstart, | |
833 | block_t start, block_t len, | |
834 | struct rb_node *parent, struct rb_node **p) | |
835 | { | |
836 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
837 | struct discard_cmd *dc; | |
838 | ||
839 | dc = __create_discard_cmd(sbi, bdev, lstart, start, len); | |
840 | ||
841 | rb_link_node(&dc->rb_node, parent, p); | |
842 | rb_insert_color(&dc->rb_node, &dcc->root); | |
843 | ||
844 | return dc; | |
15469963 JK |
845 | } |
846 | ||
004b6862 CY |
847 | static void __detach_discard_cmd(struct discard_cmd_control *dcc, |
848 | struct discard_cmd *dc) | |
15469963 | 849 | { |
dcc9165d | 850 | if (dc->state == D_DONE) |
004b6862 CY |
851 | atomic_dec(&dcc->issing_discard); |
852 | ||
853 | list_del(&dc->list); | |
854 | rb_erase(&dc->rb_node, &dcc->root); | |
d84d1cbd | 855 | dcc->undiscard_blks -= dc->len; |
004b6862 CY |
856 | |
857 | kmem_cache_free(discard_cmd_slab, dc); | |
858 | ||
859 | atomic_dec(&dcc->discard_cmd_cnt); | |
860 | } | |
861 | ||
862 | static void __remove_discard_cmd(struct f2fs_sb_info *sbi, | |
863 | struct discard_cmd *dc) | |
864 | { | |
865 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
dcc9165d | 866 | |
2ec6f2ef CY |
867 | trace_f2fs_remove_discard(dc->bdev, dc->start, dc->len); |
868 | ||
d9703d90 CY |
869 | f2fs_bug_on(sbi, dc->ref); |
870 | ||
c81abe34 JK |
871 | if (dc->error == -EOPNOTSUPP) |
872 | dc->error = 0; | |
15469963 | 873 | |
c81abe34 | 874 | if (dc->error) |
15469963 | 875 | f2fs_msg(sbi->sb, KERN_INFO, |
04dfc230 CY |
876 | "Issue discard(%u, %u, %u) failed, ret: %d", |
877 | dc->lstart, dc->start, dc->len, dc->error); | |
004b6862 | 878 | __detach_discard_cmd(dcc, dc); |
275b66b0 CY |
879 | } |
880 | ||
c81abe34 JK |
881 | static void f2fs_submit_discard_endio(struct bio *bio) |
882 | { | |
883 | struct discard_cmd *dc = (struct discard_cmd *)bio->bi_private; | |
884 | ||
4e4cbee9 | 885 | dc->error = blk_status_to_errno(bio->bi_status); |
c81abe34 | 886 | dc->state = D_DONE; |
e31b9821 | 887 | complete_all(&dc->wait); |
c81abe34 JK |
888 | bio_put(bio); |
889 | } | |
890 | ||
94b1e10e | 891 | static void __check_sit_bitmap(struct f2fs_sb_info *sbi, |
6915ea9d CY |
892 | block_t start, block_t end) |
893 | { | |
894 | #ifdef CONFIG_F2FS_CHECK_FS | |
895 | struct seg_entry *sentry; | |
896 | unsigned int segno; | |
897 | block_t blk = start; | |
898 | unsigned long offset, size, max_blocks = sbi->blocks_per_seg; | |
899 | unsigned long *map; | |
900 | ||
901 | while (blk < end) { | |
902 | segno = GET_SEGNO(sbi, blk); | |
903 | sentry = get_seg_entry(sbi, segno); | |
904 | offset = GET_BLKOFF_FROM_SEG0(sbi, blk); | |
905 | ||
008396e1 YS |
906 | if (end < START_BLOCK(sbi, segno + 1)) |
907 | size = GET_BLKOFF_FROM_SEG0(sbi, end); | |
908 | else | |
909 | size = max_blocks; | |
6915ea9d CY |
910 | map = (unsigned long *)(sentry->cur_valid_map); |
911 | offset = __find_rev_next_bit(map, size, offset); | |
912 | f2fs_bug_on(sbi, offset != size); | |
008396e1 | 913 | blk = START_BLOCK(sbi, segno + 1); |
6915ea9d CY |
914 | } |
915 | #endif | |
916 | } | |
917 | ||
c81abe34 JK |
918 | /* this function is copied from blkdev_issue_discard from block/blk-lib.c */ |
919 | static void __submit_discard_cmd(struct f2fs_sb_info *sbi, | |
78997b56 CY |
920 | struct discard_policy *dpolicy, |
921 | struct discard_cmd *dc) | |
c81abe34 JK |
922 | { |
923 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
78997b56 CY |
924 | struct list_head *wait_list = (dpolicy->type == DPOLICY_FSTRIM) ? |
925 | &(dcc->fstrim_list) : &(dcc->wait_list); | |
c81abe34 | 926 | struct bio *bio = NULL; |
78997b56 | 927 | int flag = dpolicy->sync ? REQ_SYNC : 0; |
c81abe34 JK |
928 | |
929 | if (dc->state != D_PREP) | |
930 | return; | |
931 | ||
0243a5f9 CY |
932 | trace_f2fs_issue_discard(dc->bdev, dc->start, dc->len); |
933 | ||
c81abe34 JK |
934 | dc->error = __blkdev_issue_discard(dc->bdev, |
935 | SECTOR_FROM_BLOCK(dc->start), | |
936 | SECTOR_FROM_BLOCK(dc->len), | |
937 | GFP_NOFS, 0, &bio); | |
938 | if (!dc->error) { | |
939 | /* should keep before submission to avoid D_DONE right away */ | |
940 | dc->state = D_SUBMIT; | |
8b8dd65f CY |
941 | atomic_inc(&dcc->issued_discard); |
942 | atomic_inc(&dcc->issing_discard); | |
c81abe34 JK |
943 | if (bio) { |
944 | bio->bi_private = dc; | |
945 | bio->bi_end_io = f2fs_submit_discard_endio; | |
ecc9aa00 | 946 | bio->bi_opf |= flag; |
c81abe34 | 947 | submit_bio(bio); |
8412663d | 948 | list_move_tail(&dc->list, wait_list); |
6915ea9d | 949 | __check_sit_bitmap(sbi, dc->start, dc->start + dc->len); |
b0af6d49 CY |
950 | |
951 | f2fs_update_iostat(sbi, FS_DISCARD, 1); | |
c81abe34 JK |
952 | } |
953 | } else { | |
954 | __remove_discard_cmd(sbi, dc); | |
955 | } | |
956 | } | |
957 | ||
004b6862 CY |
958 | static struct discard_cmd *__insert_discard_tree(struct f2fs_sb_info *sbi, |
959 | struct block_device *bdev, block_t lstart, | |
960 | block_t start, block_t len, | |
961 | struct rb_node **insert_p, | |
962 | struct rb_node *insert_parent) | |
c81abe34 | 963 | { |
004b6862 | 964 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
dca6951f | 965 | struct rb_node **p; |
004b6862 CY |
966 | struct rb_node *parent = NULL; |
967 | struct discard_cmd *dc = NULL; | |
968 | ||
969 | if (insert_p && insert_parent) { | |
970 | parent = insert_parent; | |
971 | p = insert_p; | |
972 | goto do_insert; | |
973 | } | |
c81abe34 | 974 | |
004b6862 CY |
975 | p = __lookup_rb_tree_for_insert(sbi, &dcc->root, &parent, lstart); |
976 | do_insert: | |
977 | dc = __attach_discard_cmd(sbi, bdev, lstart, start, len, parent, p); | |
978 | if (!dc) | |
979 | return NULL; | |
c81abe34 | 980 | |
004b6862 | 981 | return dc; |
c81abe34 JK |
982 | } |
983 | ||
ba48a33e CY |
984 | static void __relocate_discard_cmd(struct discard_cmd_control *dcc, |
985 | struct discard_cmd *dc) | |
986 | { | |
987 | list_move_tail(&dc->list, &dcc->pend_list[plist_idx(dc->len)]); | |
988 | } | |
989 | ||
3d6a650f YH |
990 | static void __punch_discard_cmd(struct f2fs_sb_info *sbi, |
991 | struct discard_cmd *dc, block_t blkaddr) | |
992 | { | |
ba48a33e | 993 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
004b6862 CY |
994 | struct discard_info di = dc->di; |
995 | bool modified = false; | |
3d6a650f | 996 | |
004b6862 | 997 | if (dc->state == D_DONE || dc->len == 1) { |
3d6a650f YH |
998 | __remove_discard_cmd(sbi, dc); |
999 | return; | |
1000 | } | |
1001 | ||
d84d1cbd CY |
1002 | dcc->undiscard_blks -= di.len; |
1003 | ||
004b6862 | 1004 | if (blkaddr > di.lstart) { |
3d6a650f | 1005 | dc->len = blkaddr - dc->lstart; |
d84d1cbd | 1006 | dcc->undiscard_blks += dc->len; |
ba48a33e | 1007 | __relocate_discard_cmd(dcc, dc); |
004b6862 CY |
1008 | modified = true; |
1009 | } | |
1010 | ||
1011 | if (blkaddr < di.lstart + di.len - 1) { | |
1012 | if (modified) { | |
1013 | __insert_discard_tree(sbi, dc->bdev, blkaddr + 1, | |
1014 | di.start + blkaddr + 1 - di.lstart, | |
1015 | di.lstart + di.len - 1 - blkaddr, | |
1016 | NULL, NULL); | |
1017 | } else { | |
1018 | dc->lstart++; | |
1019 | dc->len--; | |
1020 | dc->start++; | |
d84d1cbd | 1021 | dcc->undiscard_blks += dc->len; |
ba48a33e | 1022 | __relocate_discard_cmd(dcc, dc); |
004b6862 | 1023 | } |
3d6a650f YH |
1024 | } |
1025 | } | |
1026 | ||
004b6862 CY |
1027 | static void __update_discard_tree_range(struct f2fs_sb_info *sbi, |
1028 | struct block_device *bdev, block_t lstart, | |
1029 | block_t start, block_t len) | |
275b66b0 | 1030 | { |
0b54fb84 | 1031 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
004b6862 CY |
1032 | struct discard_cmd *prev_dc = NULL, *next_dc = NULL; |
1033 | struct discard_cmd *dc; | |
1034 | struct discard_info di = {0}; | |
1035 | struct rb_node **insert_p = NULL, *insert_parent = NULL; | |
1036 | block_t end = lstart + len; | |
275b66b0 | 1037 | |
15469963 | 1038 | mutex_lock(&dcc->cmd_lock); |
40465257 | 1039 | |
004b6862 CY |
1040 | dc = (struct discard_cmd *)__lookup_rb_tree_ret(&dcc->root, |
1041 | NULL, lstart, | |
1042 | (struct rb_entry **)&prev_dc, | |
1043 | (struct rb_entry **)&next_dc, | |
1044 | &insert_p, &insert_parent, true); | |
1045 | if (dc) | |
1046 | prev_dc = dc; | |
1047 | ||
1048 | if (!prev_dc) { | |
1049 | di.lstart = lstart; | |
1050 | di.len = next_dc ? next_dc->lstart - lstart : len; | |
1051 | di.len = min(di.len, len); | |
1052 | di.start = start; | |
22d375dd | 1053 | } |
15469963 | 1054 | |
004b6862 CY |
1055 | while (1) { |
1056 | struct rb_node *node; | |
1057 | bool merged = false; | |
1058 | struct discard_cmd *tdc = NULL; | |
1059 | ||
1060 | if (prev_dc) { | |
1061 | di.lstart = prev_dc->lstart + prev_dc->len; | |
1062 | if (di.lstart < lstart) | |
1063 | di.lstart = lstart; | |
1064 | if (di.lstart >= end) | |
1065 | break; | |
1066 | ||
1067 | if (!next_dc || next_dc->lstart > end) | |
1068 | di.len = end - di.lstart; | |
1069 | else | |
1070 | di.len = next_dc->lstart - di.lstart; | |
1071 | di.start = start + di.lstart - lstart; | |
1072 | } | |
1073 | ||
1074 | if (!di.len) | |
1075 | goto next; | |
1076 | ||
1077 | if (prev_dc && prev_dc->state == D_PREP && | |
1078 | prev_dc->bdev == bdev && | |
1079 | __is_discard_back_mergeable(&di, &prev_dc->di)) { | |
1080 | prev_dc->di.len += di.len; | |
d84d1cbd | 1081 | dcc->undiscard_blks += di.len; |
ba48a33e | 1082 | __relocate_discard_cmd(dcc, prev_dc); |
004b6862 CY |
1083 | di = prev_dc->di; |
1084 | tdc = prev_dc; | |
1085 | merged = true; | |
1086 | } | |
1087 | ||
1088 | if (next_dc && next_dc->state == D_PREP && | |
1089 | next_dc->bdev == bdev && | |
1090 | __is_discard_front_mergeable(&di, &next_dc->di)) { | |
1091 | next_dc->di.lstart = di.lstart; | |
1092 | next_dc->di.len += di.len; | |
1093 | next_dc->di.start = di.start; | |
d84d1cbd | 1094 | dcc->undiscard_blks += di.len; |
ba48a33e | 1095 | __relocate_discard_cmd(dcc, next_dc); |
004b6862 CY |
1096 | if (tdc) |
1097 | __remove_discard_cmd(sbi, tdc); | |
004b6862 | 1098 | merged = true; |
4e6a8d9b | 1099 | } |
004b6862 | 1100 | |
df0f6b44 | 1101 | if (!merged) { |
004b6862 CY |
1102 | __insert_discard_tree(sbi, bdev, di.lstart, di.start, |
1103 | di.len, NULL, NULL); | |
df0f6b44 | 1104 | } |
004b6862 CY |
1105 | next: |
1106 | prev_dc = next_dc; | |
1107 | if (!prev_dc) | |
1108 | break; | |
1109 | ||
1110 | node = rb_next(&prev_dc->rb_node); | |
1111 | next_dc = rb_entry_safe(node, struct discard_cmd, rb_node); | |
1112 | } | |
1113 | ||
1114 | mutex_unlock(&dcc->cmd_lock); | |
1115 | } | |
1116 | ||
1117 | static int __queue_discard_cmd(struct f2fs_sb_info *sbi, | |
1118 | struct block_device *bdev, block_t blkstart, block_t blklen) | |
1119 | { | |
1120 | block_t lblkstart = blkstart; | |
1121 | ||
0243a5f9 | 1122 | trace_f2fs_queue_discard(bdev, blkstart, blklen); |
004b6862 CY |
1123 | |
1124 | if (sbi->s_ndevs) { | |
1125 | int devi = f2fs_target_device_index(sbi, blkstart); | |
1126 | ||
1127 | blkstart -= FDEV(devi).start_blk; | |
1128 | } | |
1129 | __update_discard_tree_range(sbi, bdev, lblkstart, blkstart, blklen); | |
004b6862 CY |
1130 | return 0; |
1131 | } | |
1132 | ||
8412663d | 1133 | static void __issue_discard_cmd_range(struct f2fs_sb_info *sbi, |
78997b56 CY |
1134 | struct discard_policy *dpolicy, |
1135 | unsigned int start, unsigned int end) | |
8412663d CY |
1136 | { |
1137 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1138 | struct discard_cmd *prev_dc = NULL, *next_dc = NULL; | |
1139 | struct rb_node **insert_p = NULL, *insert_parent = NULL; | |
1140 | struct discard_cmd *dc; | |
1141 | struct blk_plug plug; | |
1142 | int issued; | |
1143 | ||
1144 | next: | |
1145 | issued = 0; | |
1146 | ||
1147 | mutex_lock(&dcc->cmd_lock); | |
1148 | f2fs_bug_on(sbi, !__check_rb_tree_consistence(sbi, &dcc->root)); | |
1149 | ||
1150 | dc = (struct discard_cmd *)__lookup_rb_tree_ret(&dcc->root, | |
1151 | NULL, start, | |
1152 | (struct rb_entry **)&prev_dc, | |
1153 | (struct rb_entry **)&next_dc, | |
1154 | &insert_p, &insert_parent, true); | |
1155 | if (!dc) | |
1156 | dc = next_dc; | |
1157 | ||
1158 | blk_start_plug(&plug); | |
1159 | ||
1160 | while (dc && dc->lstart <= end) { | |
1161 | struct rb_node *node; | |
1162 | ||
78997b56 | 1163 | if (dc->len < dpolicy->granularity) |
8412663d CY |
1164 | goto skip; |
1165 | ||
1166 | if (dc->state != D_PREP) { | |
1167 | list_move_tail(&dc->list, &dcc->fstrim_list); | |
1168 | goto skip; | |
1169 | } | |
1170 | ||
78997b56 | 1171 | __submit_discard_cmd(sbi, dpolicy, dc); |
8412663d | 1172 | |
ecc9aa00 | 1173 | if (++issued >= dpolicy->max_requests) { |
8412663d CY |
1174 | start = dc->lstart + dc->len; |
1175 | ||
1176 | blk_finish_plug(&plug); | |
1177 | mutex_unlock(&dcc->cmd_lock); | |
1178 | ||
1179 | schedule(); | |
1180 | ||
1181 | goto next; | |
1182 | } | |
1183 | skip: | |
1184 | node = rb_next(&dc->rb_node); | |
1185 | dc = rb_entry_safe(node, struct discard_cmd, rb_node); | |
1186 | ||
1187 | if (fatal_signal_pending(current)) | |
1188 | break; | |
1189 | } | |
1190 | ||
1191 | blk_finish_plug(&plug); | |
1192 | mutex_unlock(&dcc->cmd_lock); | |
1193 | } | |
1194 | ||
78997b56 CY |
1195 | static int __issue_discard_cmd(struct f2fs_sb_info *sbi, |
1196 | struct discard_policy *dpolicy) | |
bd5b0738 CY |
1197 | { |
1198 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1199 | struct list_head *pend_list; | |
1200 | struct discard_cmd *dc, *tmp; | |
1201 | struct blk_plug plug; | |
78997b56 | 1202 | int i, iter = 0, issued = 0; |
e6c6de18 | 1203 | bool io_interrupted = false; |
bd5b0738 | 1204 | |
78997b56 CY |
1205 | for (i = MAX_PLIST_NUM - 1; i >= 0; i--) { |
1206 | if (i + 1 < dpolicy->granularity) | |
1207 | break; | |
bd5b0738 | 1208 | pend_list = &dcc->pend_list[i]; |
33da62cf CY |
1209 | |
1210 | mutex_lock(&dcc->cmd_lock); | |
49c60c67 CY |
1211 | if (list_empty(pend_list)) |
1212 | goto next; | |
33da62cf CY |
1213 | f2fs_bug_on(sbi, !__check_rb_tree_consistence(sbi, &dcc->root)); |
1214 | blk_start_plug(&plug); | |
bd5b0738 CY |
1215 | list_for_each_entry_safe(dc, tmp, pend_list, list) { |
1216 | f2fs_bug_on(sbi, dc->state != D_PREP); | |
1217 | ||
ecc9aa00 CY |
1218 | if (dpolicy->io_aware && i < dpolicy->io_aware_gran && |
1219 | !is_idle(sbi)) { | |
e6c6de18 | 1220 | io_interrupted = true; |
ecc9aa00 | 1221 | goto skip; |
969d1b18 | 1222 | } |
e6c6de18 | 1223 | |
78997b56 | 1224 | __submit_discard_cmd(sbi, dpolicy, dc); |
ecc9aa00 CY |
1225 | issued++; |
1226 | skip: | |
1227 | if (++iter >= dpolicy->max_requests) | |
33da62cf | 1228 | break; |
bd5b0738 | 1229 | } |
33da62cf | 1230 | blk_finish_plug(&plug); |
49c60c67 | 1231 | next: |
33da62cf CY |
1232 | mutex_unlock(&dcc->cmd_lock); |
1233 | ||
1234 | if (iter >= dpolicy->max_requests) | |
1235 | break; | |
bd5b0738 | 1236 | } |
969d1b18 | 1237 | |
e6c6de18 CY |
1238 | if (!issued && io_interrupted) |
1239 | issued = -1; | |
1240 | ||
969d1b18 CY |
1241 | return issued; |
1242 | } | |
1243 | ||
cf5c759f | 1244 | static bool __drop_discard_cmd(struct f2fs_sb_info *sbi) |
969d1b18 CY |
1245 | { |
1246 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1247 | struct list_head *pend_list; | |
1248 | struct discard_cmd *dc, *tmp; | |
1249 | int i; | |
cf5c759f | 1250 | bool dropped = false; |
969d1b18 CY |
1251 | |
1252 | mutex_lock(&dcc->cmd_lock); | |
1253 | for (i = MAX_PLIST_NUM - 1; i >= 0; i--) { | |
1254 | pend_list = &dcc->pend_list[i]; | |
1255 | list_for_each_entry_safe(dc, tmp, pend_list, list) { | |
1256 | f2fs_bug_on(sbi, dc->state != D_PREP); | |
1257 | __remove_discard_cmd(sbi, dc); | |
cf5c759f | 1258 | dropped = true; |
969d1b18 CY |
1259 | } |
1260 | } | |
1261 | mutex_unlock(&dcc->cmd_lock); | |
cf5c759f CY |
1262 | |
1263 | return dropped; | |
bd5b0738 CY |
1264 | } |
1265 | ||
7950e9ac CY |
1266 | void drop_discard_cmd(struct f2fs_sb_info *sbi) |
1267 | { | |
1268 | __drop_discard_cmd(sbi); | |
1269 | } | |
1270 | ||
0ea80512 | 1271 | static unsigned int __wait_one_discard_bio(struct f2fs_sb_info *sbi, |
2a510c00 CY |
1272 | struct discard_cmd *dc) |
1273 | { | |
1274 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
0ea80512 | 1275 | unsigned int len = 0; |
2a510c00 CY |
1276 | |
1277 | wait_for_completion_io(&dc->wait); | |
1278 | mutex_lock(&dcc->cmd_lock); | |
1279 | f2fs_bug_on(sbi, dc->state != D_DONE); | |
1280 | dc->ref--; | |
0ea80512 CY |
1281 | if (!dc->ref) { |
1282 | if (!dc->error) | |
1283 | len = dc->len; | |
2a510c00 | 1284 | __remove_discard_cmd(sbi, dc); |
0ea80512 | 1285 | } |
2a510c00 | 1286 | mutex_unlock(&dcc->cmd_lock); |
0ea80512 CY |
1287 | |
1288 | return len; | |
2a510c00 CY |
1289 | } |
1290 | ||
0ea80512 | 1291 | static unsigned int __wait_discard_cmd_range(struct f2fs_sb_info *sbi, |
78997b56 CY |
1292 | struct discard_policy *dpolicy, |
1293 | block_t start, block_t end) | |
63a94fa1 CY |
1294 | { |
1295 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
78997b56 CY |
1296 | struct list_head *wait_list = (dpolicy->type == DPOLICY_FSTRIM) ? |
1297 | &(dcc->fstrim_list) : &(dcc->wait_list); | |
63a94fa1 | 1298 | struct discard_cmd *dc, *tmp; |
6afae633 | 1299 | bool need_wait; |
0ea80512 | 1300 | unsigned int trimmed = 0; |
6afae633 CY |
1301 | |
1302 | next: | |
1303 | need_wait = false; | |
63a94fa1 CY |
1304 | |
1305 | mutex_lock(&dcc->cmd_lock); | |
1306 | list_for_each_entry_safe(dc, tmp, wait_list, list) { | |
8412663d CY |
1307 | if (dc->lstart + dc->len <= start || end <= dc->lstart) |
1308 | continue; | |
78997b56 | 1309 | if (dc->len < dpolicy->granularity) |
8412663d | 1310 | continue; |
78997b56 | 1311 | if (dc->state == D_DONE && !dc->ref) { |
63a94fa1 | 1312 | wait_for_completion_io(&dc->wait); |
0ea80512 CY |
1313 | if (!dc->error) |
1314 | trimmed += dc->len; | |
63a94fa1 | 1315 | __remove_discard_cmd(sbi, dc); |
6afae633 CY |
1316 | } else { |
1317 | dc->ref++; | |
1318 | need_wait = true; | |
1319 | break; | |
63a94fa1 CY |
1320 | } |
1321 | } | |
1322 | mutex_unlock(&dcc->cmd_lock); | |
6afae633 CY |
1323 | |
1324 | if (need_wait) { | |
0ea80512 | 1325 | trimmed += __wait_one_discard_bio(sbi, dc); |
6afae633 CY |
1326 | goto next; |
1327 | } | |
0ea80512 CY |
1328 | |
1329 | return trimmed; | |
63a94fa1 CY |
1330 | } |
1331 | ||
78997b56 CY |
1332 | static void __wait_all_discard_cmd(struct f2fs_sb_info *sbi, |
1333 | struct discard_policy *dpolicy) | |
8412663d | 1334 | { |
78997b56 | 1335 | __wait_discard_cmd_range(sbi, dpolicy, 0, UINT_MAX); |
8412663d CY |
1336 | } |
1337 | ||
004b6862 | 1338 | /* This should be covered by global mutex, &sit_i->sentry_lock */ |
94b1e10e | 1339 | static void f2fs_wait_discard_bio(struct f2fs_sb_info *sbi, block_t blkaddr) |
004b6862 CY |
1340 | { |
1341 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1342 | struct discard_cmd *dc; | |
ec9895ad | 1343 | bool need_wait = false; |
004b6862 CY |
1344 | |
1345 | mutex_lock(&dcc->cmd_lock); | |
004b6862 CY |
1346 | dc = (struct discard_cmd *)__lookup_rb_tree(&dcc->root, NULL, blkaddr); |
1347 | if (dc) { | |
ec9895ad CY |
1348 | if (dc->state == D_PREP) { |
1349 | __punch_discard_cmd(sbi, dc, blkaddr); | |
1350 | } else { | |
1351 | dc->ref++; | |
1352 | need_wait = true; | |
1353 | } | |
275b66b0 | 1354 | } |
d431413f | 1355 | mutex_unlock(&dcc->cmd_lock); |
ec9895ad | 1356 | |
2a510c00 CY |
1357 | if (need_wait) |
1358 | __wait_one_discard_bio(sbi, dc); | |
d431413f CY |
1359 | } |
1360 | ||
cce13252 CY |
1361 | void stop_discard_thread(struct f2fs_sb_info *sbi) |
1362 | { | |
1363 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1364 | ||
1365 | if (dcc && dcc->f2fs_issue_discard) { | |
1366 | struct task_struct *discard_thread = dcc->f2fs_issue_discard; | |
1367 | ||
1368 | dcc->f2fs_issue_discard = NULL; | |
1369 | kthread_stop(discard_thread); | |
ec9895ad | 1370 | } |
d431413f CY |
1371 | } |
1372 | ||
8412663d | 1373 | /* This comes from f2fs_put_super */ |
cf5c759f | 1374 | bool f2fs_wait_discard_bios(struct f2fs_sb_info *sbi) |
969d1b18 CY |
1375 | { |
1376 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
78997b56 | 1377 | struct discard_policy dpolicy; |
cf5c759f | 1378 | bool dropped; |
969d1b18 | 1379 | |
78997b56 CY |
1380 | init_discard_policy(&dpolicy, DPOLICY_UMOUNT, dcc->discard_granularity); |
1381 | __issue_discard_cmd(sbi, &dpolicy); | |
cf5c759f | 1382 | dropped = __drop_discard_cmd(sbi); |
78997b56 | 1383 | __wait_all_discard_cmd(sbi, &dpolicy); |
cf5c759f CY |
1384 | |
1385 | return dropped; | |
969d1b18 CY |
1386 | } |
1387 | ||
15469963 JK |
1388 | static int issue_discard_thread(void *data) |
1389 | { | |
1390 | struct f2fs_sb_info *sbi = data; | |
1391 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1392 | wait_queue_head_t *q = &dcc->discard_wait_queue; | |
78997b56 | 1393 | struct discard_policy dpolicy; |
969d1b18 CY |
1394 | unsigned int wait_ms = DEF_MIN_DISCARD_ISSUE_TIME; |
1395 | int issued; | |
15469963 | 1396 | |
1d7be270 | 1397 | set_freezable(); |
15469963 | 1398 | |
1d7be270 | 1399 | do { |
78997b56 CY |
1400 | init_discard_policy(&dpolicy, DPOLICY_BG, |
1401 | dcc->discard_granularity); | |
1402 | ||
969d1b18 CY |
1403 | wait_event_interruptible_timeout(*q, |
1404 | kthread_should_stop() || freezing(current) || | |
1405 | dcc->discard_wake, | |
1406 | msecs_to_jiffies(wait_ms)); | |
1d7be270 JK |
1407 | if (try_to_freeze()) |
1408 | continue; | |
3b60d802 CY |
1409 | if (f2fs_readonly(sbi->sb)) |
1410 | continue; | |
1d7be270 JK |
1411 | if (kthread_should_stop()) |
1412 | return 0; | |
15469963 | 1413 | |
dee02f0d | 1414 | if (dcc->discard_wake) |
969d1b18 | 1415 | dcc->discard_wake = 0; |
dee02f0d JK |
1416 | |
1417 | if (sbi->gc_thread && sbi->gc_thread->gc_urgent) | |
1418 | init_discard_policy(&dpolicy, DPOLICY_FORCE, 1); | |
969d1b18 | 1419 | |
dc6febb6 CY |
1420 | sb_start_intwrite(sbi->sb); |
1421 | ||
78997b56 | 1422 | issued = __issue_discard_cmd(sbi, &dpolicy); |
969d1b18 | 1423 | if (issued) { |
78997b56 CY |
1424 | __wait_all_discard_cmd(sbi, &dpolicy); |
1425 | wait_ms = dpolicy.min_interval; | |
969d1b18 | 1426 | } else { |
78997b56 | 1427 | wait_ms = dpolicy.max_interval; |
969d1b18 | 1428 | } |
1d7be270 | 1429 | |
dc6febb6 | 1430 | sb_end_intwrite(sbi->sb); |
1d7be270 | 1431 | |
1d7be270 JK |
1432 | } while (!kthread_should_stop()); |
1433 | return 0; | |
15469963 JK |
1434 | } |
1435 | ||
f46e8809 | 1436 | #ifdef CONFIG_BLK_DEV_ZONED |
3c62be17 JK |
1437 | static int __f2fs_issue_discard_zone(struct f2fs_sb_info *sbi, |
1438 | struct block_device *bdev, block_t blkstart, block_t blklen) | |
f46e8809 | 1439 | { |
92592285 | 1440 | sector_t sector, nr_sects; |
10a875f8 | 1441 | block_t lblkstart = blkstart; |
3c62be17 JK |
1442 | int devi = 0; |
1443 | ||
1444 | if (sbi->s_ndevs) { | |
1445 | devi = f2fs_target_device_index(sbi, blkstart); | |
1446 | blkstart -= FDEV(devi).start_blk; | |
1447 | } | |
f46e8809 DLM |
1448 | |
1449 | /* | |
1450 | * We need to know the type of the zone: for conventional zones, | |
1451 | * use regular discard if the drive supports it. For sequential | |
1452 | * zones, reset the zone write pointer. | |
1453 | */ | |
3c62be17 | 1454 | switch (get_blkz_type(sbi, bdev, blkstart)) { |
f46e8809 DLM |
1455 | |
1456 | case BLK_ZONE_TYPE_CONVENTIONAL: | |
1457 | if (!blk_queue_discard(bdev_get_queue(bdev))) | |
1458 | return 0; | |
c81abe34 | 1459 | return __queue_discard_cmd(sbi, bdev, lblkstart, blklen); |
f46e8809 DLM |
1460 | case BLK_ZONE_TYPE_SEQWRITE_REQ: |
1461 | case BLK_ZONE_TYPE_SEQWRITE_PREF: | |
92592285 JK |
1462 | sector = SECTOR_FROM_BLOCK(blkstart); |
1463 | nr_sects = SECTOR_FROM_BLOCK(blklen); | |
1464 | ||
1465 | if (sector & (bdev_zone_sectors(bdev) - 1) || | |
1466 | nr_sects != bdev_zone_sectors(bdev)) { | |
1467 | f2fs_msg(sbi->sb, KERN_INFO, | |
1468 | "(%d) %s: Unaligned discard attempted (block %x + %x)", | |
1469 | devi, sbi->s_ndevs ? FDEV(devi).path: "", | |
1470 | blkstart, blklen); | |
1471 | return -EIO; | |
1472 | } | |
d50aaeec | 1473 | trace_f2fs_issue_reset_zone(bdev, blkstart); |
f46e8809 DLM |
1474 | return blkdev_reset_zones(bdev, sector, |
1475 | nr_sects, GFP_NOFS); | |
1476 | default: | |
1477 | /* Unknown zone type: broken device ? */ | |
1478 | return -EIO; | |
1479 | } | |
1480 | } | |
1481 | #endif | |
1482 | ||
3c62be17 JK |
1483 | static int __issue_discard_async(struct f2fs_sb_info *sbi, |
1484 | struct block_device *bdev, block_t blkstart, block_t blklen) | |
1485 | { | |
1486 | #ifdef CONFIG_BLK_DEV_ZONED | |
ccd31cb2 | 1487 | if (f2fs_sb_has_blkzoned(sbi->sb) && |
3c62be17 JK |
1488 | bdev_zoned_model(bdev) != BLK_ZONED_NONE) |
1489 | return __f2fs_issue_discard_zone(sbi, bdev, blkstart, blklen); | |
1490 | #endif | |
c81abe34 | 1491 | return __queue_discard_cmd(sbi, bdev, blkstart, blklen); |
3c62be17 JK |
1492 | } |
1493 | ||
1e87a78d | 1494 | static int f2fs_issue_discard(struct f2fs_sb_info *sbi, |
37208879 JK |
1495 | block_t blkstart, block_t blklen) |
1496 | { | |
3c62be17 JK |
1497 | sector_t start = blkstart, len = 0; |
1498 | struct block_device *bdev; | |
a66cdd98 JK |
1499 | struct seg_entry *se; |
1500 | unsigned int offset; | |
1501 | block_t i; | |
3c62be17 JK |
1502 | int err = 0; |
1503 | ||
1504 | bdev = f2fs_target_device(sbi, blkstart, NULL); | |
1505 | ||
1506 | for (i = blkstart; i < blkstart + blklen; i++, len++) { | |
1507 | if (i != start) { | |
1508 | struct block_device *bdev2 = | |
1509 | f2fs_target_device(sbi, i, NULL); | |
1510 | ||
1511 | if (bdev2 != bdev) { | |
1512 | err = __issue_discard_async(sbi, bdev, | |
1513 | start, len); | |
1514 | if (err) | |
1515 | return err; | |
1516 | bdev = bdev2; | |
1517 | start = i; | |
1518 | len = 0; | |
1519 | } | |
1520 | } | |
a66cdd98 | 1521 | |
a66cdd98 JK |
1522 | se = get_seg_entry(sbi, GET_SEGNO(sbi, i)); |
1523 | offset = GET_BLKOFF_FROM_SEG0(sbi, i); | |
1524 | ||
1525 | if (!f2fs_test_and_set_bit(offset, se->discard_map)) | |
1526 | sbi->discard_blks--; | |
1527 | } | |
f46e8809 | 1528 | |
3c62be17 JK |
1529 | if (len) |
1530 | err = __issue_discard_async(sbi, bdev, start, len); | |
1531 | return err; | |
1e87a78d JK |
1532 | } |
1533 | ||
25290fa5 JK |
1534 | static bool add_discard_addrs(struct f2fs_sb_info *sbi, struct cp_control *cpc, |
1535 | bool check_only) | |
adf4983b | 1536 | { |
b2955550 JK |
1537 | int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long); |
1538 | int max_blocks = sbi->blocks_per_seg; | |
4b2fecc8 | 1539 | struct seg_entry *se = get_seg_entry(sbi, cpc->trim_start); |
b2955550 JK |
1540 | unsigned long *cur_map = (unsigned long *)se->cur_valid_map; |
1541 | unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map; | |
a66cdd98 | 1542 | unsigned long *discard_map = (unsigned long *)se->discard_map; |
60a3b782 | 1543 | unsigned long *dmap = SIT_I(sbi)->tmp_map; |
b2955550 | 1544 | unsigned int start = 0, end = -1; |
c473f1a9 | 1545 | bool force = (cpc->reason & CP_DISCARD); |
a7eeb823 | 1546 | struct discard_entry *de = NULL; |
46f84c2c | 1547 | struct list_head *head = &SM_I(sbi)->dcc_info->entry_list; |
b2955550 JK |
1548 | int i; |
1549 | ||
3e025740 | 1550 | if (se->valid_blocks == max_blocks || !f2fs_discard_en(sbi)) |
25290fa5 | 1551 | return false; |
b2955550 | 1552 | |
a66cdd98 JK |
1553 | if (!force) { |
1554 | if (!test_opt(sbi, DISCARD) || !se->valid_blocks || | |
0b54fb84 JK |
1555 | SM_I(sbi)->dcc_info->nr_discards >= |
1556 | SM_I(sbi)->dcc_info->max_discards) | |
25290fa5 | 1557 | return false; |
4b2fecc8 JK |
1558 | } |
1559 | ||
b2955550 JK |
1560 | /* SIT_VBLOCK_MAP_SIZE should be multiple of sizeof(unsigned long) */ |
1561 | for (i = 0; i < entries; i++) | |
a66cdd98 | 1562 | dmap[i] = force ? ~ckpt_map[i] & ~discard_map[i] : |
d7bc2484 | 1563 | (cur_map[i] ^ ckpt_map[i]) & ckpt_map[i]; |
b2955550 | 1564 | |
0b54fb84 JK |
1565 | while (force || SM_I(sbi)->dcc_info->nr_discards <= |
1566 | SM_I(sbi)->dcc_info->max_discards) { | |
b2955550 JK |
1567 | start = __find_rev_next_bit(dmap, max_blocks, end + 1); |
1568 | if (start >= max_blocks) | |
1569 | break; | |
1570 | ||
1571 | end = __find_rev_next_zero_bit(dmap, max_blocks, start + 1); | |
c7b41e16 YH |
1572 | if (force && start && end != max_blocks |
1573 | && (end - start) < cpc->trim_minlen) | |
1574 | continue; | |
1575 | ||
25290fa5 JK |
1576 | if (check_only) |
1577 | return true; | |
1578 | ||
a7eeb823 CY |
1579 | if (!de) { |
1580 | de = f2fs_kmem_cache_alloc(discard_entry_slab, | |
1581 | GFP_F2FS_ZERO); | |
1582 | de->start_blkaddr = START_BLOCK(sbi, cpc->trim_start); | |
1583 | list_add_tail(&de->list, head); | |
1584 | } | |
1585 | ||
1586 | for (i = start; i < end; i++) | |
1587 | __set_bit_le(i, (void *)de->discard_map); | |
1588 | ||
1589 | SM_I(sbi)->dcc_info->nr_discards += end - start; | |
b2955550 | 1590 | } |
25290fa5 | 1591 | return false; |
b2955550 JK |
1592 | } |
1593 | ||
4b2fecc8 JK |
1594 | void release_discard_addrs(struct f2fs_sb_info *sbi) |
1595 | { | |
46f84c2c | 1596 | struct list_head *head = &(SM_I(sbi)->dcc_info->entry_list); |
4b2fecc8 JK |
1597 | struct discard_entry *entry, *this; |
1598 | ||
1599 | /* drop caches */ | |
1600 | list_for_each_entry_safe(entry, this, head, list) { | |
1601 | list_del(&entry->list); | |
1602 | kmem_cache_free(discard_entry_slab, entry); | |
1603 | } | |
1604 | } | |
1605 | ||
0a8165d7 | 1606 | /* |
351df4b2 JK |
1607 | * Should call clear_prefree_segments after checkpoint is done. |
1608 | */ | |
1609 | static void set_prefree_as_free_segments(struct f2fs_sb_info *sbi) | |
1610 | { | |
1611 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
b65ee148 | 1612 | unsigned int segno; |
351df4b2 JK |
1613 | |
1614 | mutex_lock(&dirty_i->seglist_lock); | |
7cd8558b | 1615 | for_each_set_bit(segno, dirty_i->dirty_segmap[PRE], MAIN_SEGS(sbi)) |
351df4b2 | 1616 | __set_test_and_free(sbi, segno); |
351df4b2 JK |
1617 | mutex_unlock(&dirty_i->seglist_lock); |
1618 | } | |
1619 | ||
836b5a63 | 1620 | void clear_prefree_segments(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
351df4b2 | 1621 | { |
969d1b18 CY |
1622 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
1623 | struct list_head *head = &dcc->entry_list; | |
2d7b822a | 1624 | struct discard_entry *entry, *this; |
351df4b2 | 1625 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); |
29e59c14 | 1626 | unsigned long *prefree_map = dirty_i->dirty_segmap[PRE]; |
29e59c14 | 1627 | unsigned int start = 0, end = -1; |
36abef4e | 1628 | unsigned int secno, start_segno; |
c473f1a9 | 1629 | bool force = (cpc->reason & CP_DISCARD); |
351df4b2 JK |
1630 | |
1631 | mutex_lock(&dirty_i->seglist_lock); | |
29e59c14 | 1632 | |
351df4b2 | 1633 | while (1) { |
29e59c14 | 1634 | int i; |
7cd8558b JK |
1635 | start = find_next_bit(prefree_map, MAIN_SEGS(sbi), end + 1); |
1636 | if (start >= MAIN_SEGS(sbi)) | |
351df4b2 | 1637 | break; |
7cd8558b JK |
1638 | end = find_next_zero_bit(prefree_map, MAIN_SEGS(sbi), |
1639 | start + 1); | |
29e59c14 CL |
1640 | |
1641 | for (i = start; i < end; i++) | |
1642 | clear_bit(i, prefree_map); | |
1643 | ||
1644 | dirty_i->nr_dirty[PRE] -= end - start; | |
1645 | ||
650d3c4e | 1646 | if (!test_opt(sbi, DISCARD)) |
29e59c14 | 1647 | continue; |
351df4b2 | 1648 | |
650d3c4e YH |
1649 | if (force && start >= cpc->trim_start && |
1650 | (end - 1) <= cpc->trim_end) | |
1651 | continue; | |
1652 | ||
36abef4e JK |
1653 | if (!test_opt(sbi, LFS) || sbi->segs_per_sec == 1) { |
1654 | f2fs_issue_discard(sbi, START_BLOCK(sbi, start), | |
37208879 | 1655 | (end - start) << sbi->log_blocks_per_seg); |
36abef4e JK |
1656 | continue; |
1657 | } | |
1658 | next: | |
4ddb1a4d JK |
1659 | secno = GET_SEC_FROM_SEG(sbi, start); |
1660 | start_segno = GET_SEG_FROM_SEC(sbi, secno); | |
36abef4e | 1661 | if (!IS_CURSEC(sbi, secno) && |
302bd348 | 1662 | !get_valid_blocks(sbi, start, true)) |
36abef4e JK |
1663 | f2fs_issue_discard(sbi, START_BLOCK(sbi, start_segno), |
1664 | sbi->segs_per_sec << sbi->log_blocks_per_seg); | |
1665 | ||
1666 | start = start_segno + sbi->segs_per_sec; | |
1667 | if (start < end) | |
1668 | goto next; | |
8b107f5b JK |
1669 | else |
1670 | end = start - 1; | |
351df4b2 JK |
1671 | } |
1672 | mutex_unlock(&dirty_i->seglist_lock); | |
b2955550 JK |
1673 | |
1674 | /* send small discards */ | |
2d7b822a | 1675 | list_for_each_entry_safe(entry, this, head, list) { |
a7eeb823 CY |
1676 | unsigned int cur_pos = 0, next_pos, len, total_len = 0; |
1677 | bool is_valid = test_bit_le(0, entry->discard_map); | |
1678 | ||
1679 | find_next: | |
1680 | if (is_valid) { | |
1681 | next_pos = find_next_zero_bit_le(entry->discard_map, | |
1682 | sbi->blocks_per_seg, cur_pos); | |
1683 | len = next_pos - cur_pos; | |
1684 | ||
ccd31cb2 | 1685 | if (f2fs_sb_has_blkzoned(sbi->sb) || |
acfd2810 | 1686 | (force && len < cpc->trim_minlen)) |
a7eeb823 CY |
1687 | goto skip; |
1688 | ||
1689 | f2fs_issue_discard(sbi, entry->start_blkaddr + cur_pos, | |
1690 | len); | |
a7eeb823 CY |
1691 | total_len += len; |
1692 | } else { | |
1693 | next_pos = find_next_bit_le(entry->discard_map, | |
1694 | sbi->blocks_per_seg, cur_pos); | |
1695 | } | |
836b5a63 | 1696 | skip: |
a7eeb823 CY |
1697 | cur_pos = next_pos; |
1698 | is_valid = !is_valid; | |
1699 | ||
1700 | if (cur_pos < sbi->blocks_per_seg) | |
1701 | goto find_next; | |
1702 | ||
b2955550 | 1703 | list_del(&entry->list); |
969d1b18 | 1704 | dcc->nr_discards -= total_len; |
b2955550 JK |
1705 | kmem_cache_free(discard_entry_slab, entry); |
1706 | } | |
34e159da | 1707 | |
01983c71 | 1708 | wake_up_discard_thread(sbi, false); |
351df4b2 JK |
1709 | } |
1710 | ||
78997b56 CY |
1711 | void init_discard_policy(struct discard_policy *dpolicy, |
1712 | int discard_type, unsigned int granularity) | |
ecc9aa00 | 1713 | { |
78997b56 CY |
1714 | /* common policy */ |
1715 | dpolicy->type = discard_type; | |
ecc9aa00 | 1716 | dpolicy->sync = true; |
78997b56 CY |
1717 | dpolicy->granularity = granularity; |
1718 | ||
6819b884 CY |
1719 | dpolicy->max_requests = DEF_MAX_DISCARD_REQUEST; |
1720 | dpolicy->io_aware_gran = MAX_PLIST_NUM; | |
1721 | ||
78997b56 CY |
1722 | if (discard_type == DPOLICY_BG) { |
1723 | dpolicy->min_interval = DEF_MIN_DISCARD_ISSUE_TIME; | |
1724 | dpolicy->max_interval = DEF_MAX_DISCARD_ISSUE_TIME; | |
78997b56 CY |
1725 | dpolicy->io_aware = true; |
1726 | } else if (discard_type == DPOLICY_FORCE) { | |
1727 | dpolicy->min_interval = DEF_MIN_DISCARD_ISSUE_TIME; | |
1728 | dpolicy->max_interval = DEF_MAX_DISCARD_ISSUE_TIME; | |
dee02f0d | 1729 | dpolicy->io_aware = false; |
78997b56 | 1730 | } else if (discard_type == DPOLICY_FSTRIM) { |
78997b56 CY |
1731 | dpolicy->io_aware = false; |
1732 | } else if (discard_type == DPOLICY_UMOUNT) { | |
78997b56 CY |
1733 | dpolicy->io_aware = false; |
1734 | } | |
ecc9aa00 CY |
1735 | } |
1736 | ||
8ed59745 | 1737 | static int create_discard_cmd_control(struct f2fs_sb_info *sbi) |
0b54fb84 | 1738 | { |
15469963 | 1739 | dev_t dev = sbi->sb->s_bdev->bd_dev; |
0b54fb84 | 1740 | struct discard_cmd_control *dcc; |
ba48a33e | 1741 | int err = 0, i; |
0b54fb84 JK |
1742 | |
1743 | if (SM_I(sbi)->dcc_info) { | |
1744 | dcc = SM_I(sbi)->dcc_info; | |
1745 | goto init_thread; | |
1746 | } | |
1747 | ||
acbf054d | 1748 | dcc = f2fs_kzalloc(sbi, sizeof(struct discard_cmd_control), GFP_KERNEL); |
0b54fb84 JK |
1749 | if (!dcc) |
1750 | return -ENOMEM; | |
1751 | ||
969d1b18 | 1752 | dcc->discard_granularity = DEFAULT_DISCARD_GRANULARITY; |
46f84c2c | 1753 | INIT_LIST_HEAD(&dcc->entry_list); |
78997b56 | 1754 | for (i = 0; i < MAX_PLIST_NUM; i++) |
ba48a33e | 1755 | INIT_LIST_HEAD(&dcc->pend_list[i]); |
46f84c2c | 1756 | INIT_LIST_HEAD(&dcc->wait_list); |
8412663d | 1757 | INIT_LIST_HEAD(&dcc->fstrim_list); |
15469963 | 1758 | mutex_init(&dcc->cmd_lock); |
8b8dd65f CY |
1759 | atomic_set(&dcc->issued_discard, 0); |
1760 | atomic_set(&dcc->issing_discard, 0); | |
5f32366a | 1761 | atomic_set(&dcc->discard_cmd_cnt, 0); |
0b54fb84 | 1762 | dcc->nr_discards = 0; |
d618ebaf | 1763 | dcc->max_discards = MAIN_SEGS(sbi) << sbi->log_blocks_per_seg; |
d84d1cbd | 1764 | dcc->undiscard_blks = 0; |
004b6862 | 1765 | dcc->root = RB_ROOT; |
0b54fb84 | 1766 | |
15469963 | 1767 | init_waitqueue_head(&dcc->discard_wait_queue); |
0b54fb84 JK |
1768 | SM_I(sbi)->dcc_info = dcc; |
1769 | init_thread: | |
15469963 JK |
1770 | dcc->f2fs_issue_discard = kthread_run(issue_discard_thread, sbi, |
1771 | "f2fs_discard-%u:%u", MAJOR(dev), MINOR(dev)); | |
1772 | if (IS_ERR(dcc->f2fs_issue_discard)) { | |
1773 | err = PTR_ERR(dcc->f2fs_issue_discard); | |
1774 | kfree(dcc); | |
1775 | SM_I(sbi)->dcc_info = NULL; | |
1776 | return err; | |
1777 | } | |
1778 | ||
0b54fb84 JK |
1779 | return err; |
1780 | } | |
1781 | ||
f099405f | 1782 | static void destroy_discard_cmd_control(struct f2fs_sb_info *sbi) |
0b54fb84 JK |
1783 | { |
1784 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1785 | ||
f099405f CY |
1786 | if (!dcc) |
1787 | return; | |
1788 | ||
cce13252 | 1789 | stop_discard_thread(sbi); |
f099405f CY |
1790 | |
1791 | kfree(dcc); | |
1792 | SM_I(sbi)->dcc_info = NULL; | |
0b54fb84 JK |
1793 | } |
1794 | ||
184a5cd2 | 1795 | static bool __mark_sit_entry_dirty(struct f2fs_sb_info *sbi, unsigned int segno) |
351df4b2 JK |
1796 | { |
1797 | struct sit_info *sit_i = SIT_I(sbi); | |
184a5cd2 CY |
1798 | |
1799 | if (!__test_and_set_bit(segno, sit_i->dirty_sentries_bitmap)) { | |
351df4b2 | 1800 | sit_i->dirty_sentries++; |
184a5cd2 CY |
1801 | return false; |
1802 | } | |
1803 | ||
1804 | return true; | |
351df4b2 JK |
1805 | } |
1806 | ||
1807 | static void __set_sit_entry_type(struct f2fs_sb_info *sbi, int type, | |
1808 | unsigned int segno, int modified) | |
1809 | { | |
1810 | struct seg_entry *se = get_seg_entry(sbi, segno); | |
1811 | se->type = type; | |
1812 | if (modified) | |
1813 | __mark_sit_entry_dirty(sbi, segno); | |
1814 | } | |
1815 | ||
1816 | static void update_sit_entry(struct f2fs_sb_info *sbi, block_t blkaddr, int del) | |
1817 | { | |
1818 | struct seg_entry *se; | |
1819 | unsigned int segno, offset; | |
1820 | long int new_vblocks; | |
6415fedc YS |
1821 | bool exist; |
1822 | #ifdef CONFIG_F2FS_CHECK_FS | |
1823 | bool mir_exist; | |
1824 | #endif | |
351df4b2 JK |
1825 | |
1826 | segno = GET_SEGNO(sbi, blkaddr); | |
1827 | ||
1828 | se = get_seg_entry(sbi, segno); | |
1829 | new_vblocks = se->valid_blocks + del; | |
491c0854 | 1830 | offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); |
351df4b2 | 1831 | |
9850cf4a | 1832 | f2fs_bug_on(sbi, (new_vblocks >> (sizeof(unsigned short) << 3) || |
351df4b2 JK |
1833 | (new_vblocks > sbi->blocks_per_seg))); |
1834 | ||
1835 | se->valid_blocks = new_vblocks; | |
1836 | se->mtime = get_mtime(sbi); | |
1837 | SIT_I(sbi)->max_mtime = se->mtime; | |
1838 | ||
1839 | /* Update valid block bitmap */ | |
1840 | if (del > 0) { | |
6415fedc | 1841 | exist = f2fs_test_and_set_bit(offset, se->cur_valid_map); |
355e7891 | 1842 | #ifdef CONFIG_F2FS_CHECK_FS |
6415fedc YS |
1843 | mir_exist = f2fs_test_and_set_bit(offset, |
1844 | se->cur_valid_map_mir); | |
1845 | if (unlikely(exist != mir_exist)) { | |
1846 | f2fs_msg(sbi->sb, KERN_ERR, "Inconsistent error " | |
1847 | "when setting bitmap, blk:%u, old bit:%d", | |
1848 | blkaddr, exist); | |
05796763 | 1849 | f2fs_bug_on(sbi, 1); |
6415fedc | 1850 | } |
355e7891 | 1851 | #endif |
6415fedc YS |
1852 | if (unlikely(exist)) { |
1853 | f2fs_msg(sbi->sb, KERN_ERR, | |
1854 | "Bitmap was wrongly set, blk:%u", blkaddr); | |
1855 | f2fs_bug_on(sbi, 1); | |
35ee82ca YS |
1856 | se->valid_blocks--; |
1857 | del = 0; | |
355e7891 | 1858 | } |
6415fedc | 1859 | |
3e025740 JK |
1860 | if (f2fs_discard_en(sbi) && |
1861 | !f2fs_test_and_set_bit(offset, se->discard_map)) | |
a66cdd98 | 1862 | sbi->discard_blks--; |
720037f9 JK |
1863 | |
1864 | /* don't overwrite by SSR to keep node chain */ | |
1865 | if (se->type == CURSEG_WARM_NODE) { | |
1866 | if (!f2fs_test_and_set_bit(offset, se->ckpt_valid_map)) | |
1867 | se->ckpt_valid_blocks++; | |
1868 | } | |
351df4b2 | 1869 | } else { |
6415fedc | 1870 | exist = f2fs_test_and_clear_bit(offset, se->cur_valid_map); |
355e7891 | 1871 | #ifdef CONFIG_F2FS_CHECK_FS |
6415fedc YS |
1872 | mir_exist = f2fs_test_and_clear_bit(offset, |
1873 | se->cur_valid_map_mir); | |
1874 | if (unlikely(exist != mir_exist)) { | |
1875 | f2fs_msg(sbi->sb, KERN_ERR, "Inconsistent error " | |
1876 | "when clearing bitmap, blk:%u, old bit:%d", | |
1877 | blkaddr, exist); | |
05796763 | 1878 | f2fs_bug_on(sbi, 1); |
6415fedc | 1879 | } |
355e7891 | 1880 | #endif |
6415fedc YS |
1881 | if (unlikely(!exist)) { |
1882 | f2fs_msg(sbi->sb, KERN_ERR, | |
1883 | "Bitmap was wrongly cleared, blk:%u", blkaddr); | |
1884 | f2fs_bug_on(sbi, 1); | |
35ee82ca YS |
1885 | se->valid_blocks++; |
1886 | del = 0; | |
355e7891 | 1887 | } |
6415fedc | 1888 | |
3e025740 JK |
1889 | if (f2fs_discard_en(sbi) && |
1890 | f2fs_test_and_clear_bit(offset, se->discard_map)) | |
a66cdd98 | 1891 | sbi->discard_blks++; |
351df4b2 JK |
1892 | } |
1893 | if (!f2fs_test_bit(offset, se->ckpt_valid_map)) | |
1894 | se->ckpt_valid_blocks += del; | |
1895 | ||
1896 | __mark_sit_entry_dirty(sbi, segno); | |
1897 | ||
1898 | /* update total number of valid blocks to be written in ckpt area */ | |
1899 | SIT_I(sbi)->written_valid_blocks += del; | |
1900 | ||
1901 | if (sbi->segs_per_sec > 1) | |
1902 | get_sec_entry(sbi, segno)->valid_blocks += del; | |
1903 | } | |
1904 | ||
351df4b2 JK |
1905 | void invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr) |
1906 | { | |
1907 | unsigned int segno = GET_SEGNO(sbi, addr); | |
1908 | struct sit_info *sit_i = SIT_I(sbi); | |
1909 | ||
9850cf4a | 1910 | f2fs_bug_on(sbi, addr == NULL_ADDR); |
351df4b2 JK |
1911 | if (addr == NEW_ADDR) |
1912 | return; | |
1913 | ||
1914 | /* add it into sit main buffer */ | |
3d26fa6b | 1915 | down_write(&sit_i->sentry_lock); |
351df4b2 JK |
1916 | |
1917 | update_sit_entry(sbi, addr, -1); | |
1918 | ||
1919 | /* add it into dirty seglist */ | |
1920 | locate_dirty_segment(sbi, segno); | |
1921 | ||
3d26fa6b | 1922 | up_write(&sit_i->sentry_lock); |
351df4b2 JK |
1923 | } |
1924 | ||
6e2c64ad JK |
1925 | bool is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr) |
1926 | { | |
1927 | struct sit_info *sit_i = SIT_I(sbi); | |
1928 | unsigned int segno, offset; | |
1929 | struct seg_entry *se; | |
1930 | bool is_cp = false; | |
1931 | ||
1932 | if (blkaddr == NEW_ADDR || blkaddr == NULL_ADDR) | |
1933 | return true; | |
1934 | ||
3d26fa6b | 1935 | down_read(&sit_i->sentry_lock); |
6e2c64ad JK |
1936 | |
1937 | segno = GET_SEGNO(sbi, blkaddr); | |
1938 | se = get_seg_entry(sbi, segno); | |
1939 | offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); | |
1940 | ||
1941 | if (f2fs_test_bit(offset, se->ckpt_valid_map)) | |
1942 | is_cp = true; | |
1943 | ||
3d26fa6b | 1944 | up_read(&sit_i->sentry_lock); |
6e2c64ad JK |
1945 | |
1946 | return is_cp; | |
1947 | } | |
1948 | ||
0a8165d7 | 1949 | /* |
351df4b2 JK |
1950 | * This function should be resided under the curseg_mutex lock |
1951 | */ | |
1952 | static void __add_sum_entry(struct f2fs_sb_info *sbi, int type, | |
e79efe3b | 1953 | struct f2fs_summary *sum) |
351df4b2 JK |
1954 | { |
1955 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1956 | void *addr = curseg->sum_blk; | |
e79efe3b | 1957 | addr += curseg->next_blkoff * sizeof(struct f2fs_summary); |
351df4b2 | 1958 | memcpy(addr, sum, sizeof(struct f2fs_summary)); |
351df4b2 JK |
1959 | } |
1960 | ||
0a8165d7 | 1961 | /* |
351df4b2 JK |
1962 | * Calculate the number of current summary pages for writing |
1963 | */ | |
3fa06d7b | 1964 | int npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra) |
351df4b2 | 1965 | { |
351df4b2 | 1966 | int valid_sum_count = 0; |
9a47938b | 1967 | int i, sum_in_page; |
351df4b2 JK |
1968 | |
1969 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
1970 | if (sbi->ckpt->alloc_type[i] == SSR) | |
1971 | valid_sum_count += sbi->blocks_per_seg; | |
3fa06d7b CY |
1972 | else { |
1973 | if (for_ra) | |
1974 | valid_sum_count += le16_to_cpu( | |
1975 | F2FS_CKPT(sbi)->cur_data_blkoff[i]); | |
1976 | else | |
1977 | valid_sum_count += curseg_blkoff(sbi, i); | |
1978 | } | |
351df4b2 JK |
1979 | } |
1980 | ||
09cbfeaf | 1981 | sum_in_page = (PAGE_SIZE - 2 * SUM_JOURNAL_SIZE - |
9a47938b FL |
1982 | SUM_FOOTER_SIZE) / SUMMARY_SIZE; |
1983 | if (valid_sum_count <= sum_in_page) | |
351df4b2 | 1984 | return 1; |
9a47938b | 1985 | else if ((valid_sum_count - sum_in_page) <= |
09cbfeaf | 1986 | (PAGE_SIZE - SUM_FOOTER_SIZE) / SUMMARY_SIZE) |
351df4b2 JK |
1987 | return 2; |
1988 | return 3; | |
1989 | } | |
1990 | ||
0a8165d7 | 1991 | /* |
351df4b2 JK |
1992 | * Caller should put this summary page |
1993 | */ | |
1994 | struct page *get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno) | |
1995 | { | |
1996 | return get_meta_page(sbi, GET_SUM_BLOCK(sbi, segno)); | |
1997 | } | |
1998 | ||
381722d2 | 1999 | void update_meta_page(struct f2fs_sb_info *sbi, void *src, block_t blk_addr) |
351df4b2 JK |
2000 | { |
2001 | struct page *page = grab_meta_page(sbi, blk_addr); | |
381722d2 | 2002 | |
0537b811 | 2003 | memcpy(page_address(page), src, PAGE_SIZE); |
351df4b2 JK |
2004 | set_page_dirty(page); |
2005 | f2fs_put_page(page, 1); | |
2006 | } | |
2007 | ||
381722d2 CY |
2008 | static void write_sum_page(struct f2fs_sb_info *sbi, |
2009 | struct f2fs_summary_block *sum_blk, block_t blk_addr) | |
2010 | { | |
2011 | update_meta_page(sbi, (void *)sum_blk, blk_addr); | |
2012 | } | |
2013 | ||
b7ad7512 CY |
2014 | static void write_current_sum_page(struct f2fs_sb_info *sbi, |
2015 | int type, block_t blk_addr) | |
2016 | { | |
2017 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2018 | struct page *page = grab_meta_page(sbi, blk_addr); | |
2019 | struct f2fs_summary_block *src = curseg->sum_blk; | |
2020 | struct f2fs_summary_block *dst; | |
2021 | ||
2022 | dst = (struct f2fs_summary_block *)page_address(page); | |
2023 | ||
2024 | mutex_lock(&curseg->curseg_mutex); | |
2025 | ||
2026 | down_read(&curseg->journal_rwsem); | |
2027 | memcpy(&dst->journal, curseg->journal, SUM_JOURNAL_SIZE); | |
2028 | up_read(&curseg->journal_rwsem); | |
2029 | ||
2030 | memcpy(dst->entries, src->entries, SUM_ENTRY_SIZE); | |
2031 | memcpy(&dst->footer, &src->footer, SUM_FOOTER_SIZE); | |
2032 | ||
2033 | mutex_unlock(&curseg->curseg_mutex); | |
2034 | ||
2035 | set_page_dirty(page); | |
2036 | f2fs_put_page(page, 1); | |
2037 | } | |
2038 | ||
a7881893 JK |
2039 | static int is_next_segment_free(struct f2fs_sb_info *sbi, int type) |
2040 | { | |
2041 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2042 | unsigned int segno = curseg->segno + 1; | |
2043 | struct free_segmap_info *free_i = FREE_I(sbi); | |
2044 | ||
2045 | if (segno < MAIN_SEGS(sbi) && segno % sbi->segs_per_sec) | |
2046 | return !test_bit(segno, free_i->free_segmap); | |
2047 | return 0; | |
2048 | } | |
2049 | ||
0a8165d7 | 2050 | /* |
351df4b2 JK |
2051 | * Find a new segment from the free segments bitmap to right order |
2052 | * This function should be returned with success, otherwise BUG | |
2053 | */ | |
2054 | static void get_new_segment(struct f2fs_sb_info *sbi, | |
2055 | unsigned int *newseg, bool new_sec, int dir) | |
2056 | { | |
2057 | struct free_segmap_info *free_i = FREE_I(sbi); | |
351df4b2 | 2058 | unsigned int segno, secno, zoneno; |
7cd8558b | 2059 | unsigned int total_zones = MAIN_SECS(sbi) / sbi->secs_per_zone; |
4ddb1a4d JK |
2060 | unsigned int hint = GET_SEC_FROM_SEG(sbi, *newseg); |
2061 | unsigned int old_zoneno = GET_ZONE_FROM_SEG(sbi, *newseg); | |
351df4b2 JK |
2062 | unsigned int left_start = hint; |
2063 | bool init = true; | |
2064 | int go_left = 0; | |
2065 | int i; | |
2066 | ||
1a118ccf | 2067 | spin_lock(&free_i->segmap_lock); |
351df4b2 JK |
2068 | |
2069 | if (!new_sec && ((*newseg + 1) % sbi->segs_per_sec)) { | |
2070 | segno = find_next_zero_bit(free_i->free_segmap, | |
4ddb1a4d JK |
2071 | GET_SEG_FROM_SEC(sbi, hint + 1), *newseg + 1); |
2072 | if (segno < GET_SEG_FROM_SEC(sbi, hint + 1)) | |
351df4b2 JK |
2073 | goto got_it; |
2074 | } | |
2075 | find_other_zone: | |
7cd8558b JK |
2076 | secno = find_next_zero_bit(free_i->free_secmap, MAIN_SECS(sbi), hint); |
2077 | if (secno >= MAIN_SECS(sbi)) { | |
351df4b2 JK |
2078 | if (dir == ALLOC_RIGHT) { |
2079 | secno = find_next_zero_bit(free_i->free_secmap, | |
7cd8558b JK |
2080 | MAIN_SECS(sbi), 0); |
2081 | f2fs_bug_on(sbi, secno >= MAIN_SECS(sbi)); | |
351df4b2 JK |
2082 | } else { |
2083 | go_left = 1; | |
2084 | left_start = hint - 1; | |
2085 | } | |
2086 | } | |
2087 | if (go_left == 0) | |
2088 | goto skip_left; | |
2089 | ||
2090 | while (test_bit(left_start, free_i->free_secmap)) { | |
2091 | if (left_start > 0) { | |
2092 | left_start--; | |
2093 | continue; | |
2094 | } | |
2095 | left_start = find_next_zero_bit(free_i->free_secmap, | |
7cd8558b JK |
2096 | MAIN_SECS(sbi), 0); |
2097 | f2fs_bug_on(sbi, left_start >= MAIN_SECS(sbi)); | |
351df4b2 JK |
2098 | break; |
2099 | } | |
2100 | secno = left_start; | |
2101 | skip_left: | |
4ddb1a4d JK |
2102 | segno = GET_SEG_FROM_SEC(sbi, secno); |
2103 | zoneno = GET_ZONE_FROM_SEC(sbi, secno); | |
351df4b2 JK |
2104 | |
2105 | /* give up on finding another zone */ | |
2106 | if (!init) | |
2107 | goto got_it; | |
2108 | if (sbi->secs_per_zone == 1) | |
2109 | goto got_it; | |
2110 | if (zoneno == old_zoneno) | |
2111 | goto got_it; | |
2112 | if (dir == ALLOC_LEFT) { | |
2113 | if (!go_left && zoneno + 1 >= total_zones) | |
2114 | goto got_it; | |
2115 | if (go_left && zoneno == 0) | |
2116 | goto got_it; | |
2117 | } | |
2118 | for (i = 0; i < NR_CURSEG_TYPE; i++) | |
2119 | if (CURSEG_I(sbi, i)->zone == zoneno) | |
2120 | break; | |
2121 | ||
2122 | if (i < NR_CURSEG_TYPE) { | |
2123 | /* zone is in user, try another */ | |
2124 | if (go_left) | |
2125 | hint = zoneno * sbi->secs_per_zone - 1; | |
2126 | else if (zoneno + 1 >= total_zones) | |
2127 | hint = 0; | |
2128 | else | |
2129 | hint = (zoneno + 1) * sbi->secs_per_zone; | |
2130 | init = false; | |
2131 | goto find_other_zone; | |
2132 | } | |
2133 | got_it: | |
2134 | /* set it as dirty segment in free segmap */ | |
9850cf4a | 2135 | f2fs_bug_on(sbi, test_bit(segno, free_i->free_segmap)); |
351df4b2 JK |
2136 | __set_inuse(sbi, segno); |
2137 | *newseg = segno; | |
1a118ccf | 2138 | spin_unlock(&free_i->segmap_lock); |
351df4b2 JK |
2139 | } |
2140 | ||
2141 | static void reset_curseg(struct f2fs_sb_info *sbi, int type, int modified) | |
2142 | { | |
2143 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2144 | struct summary_footer *sum_footer; | |
2145 | ||
2146 | curseg->segno = curseg->next_segno; | |
4ddb1a4d | 2147 | curseg->zone = GET_ZONE_FROM_SEG(sbi, curseg->segno); |
351df4b2 JK |
2148 | curseg->next_blkoff = 0; |
2149 | curseg->next_segno = NULL_SEGNO; | |
2150 | ||
2151 | sum_footer = &(curseg->sum_blk->footer); | |
2152 | memset(sum_footer, 0, sizeof(struct summary_footer)); | |
2153 | if (IS_DATASEG(type)) | |
2154 | SET_SUM_TYPE(sum_footer, SUM_TYPE_DATA); | |
2155 | if (IS_NODESEG(type)) | |
2156 | SET_SUM_TYPE(sum_footer, SUM_TYPE_NODE); | |
2157 | __set_sit_entry_type(sbi, type, curseg->segno, modified); | |
2158 | } | |
2159 | ||
7a20b8a6 JK |
2160 | static unsigned int __get_next_segno(struct f2fs_sb_info *sbi, int type) |
2161 | { | |
a7881893 JK |
2162 | /* if segs_per_sec is large than 1, we need to keep original policy. */ |
2163 | if (sbi->segs_per_sec != 1) | |
2164 | return CURSEG_I(sbi, type)->segno; | |
2165 | ||
b94929d9 YS |
2166 | if (test_opt(sbi, NOHEAP) && |
2167 | (type == CURSEG_HOT_DATA || IS_NODESEG(type))) | |
7a20b8a6 JK |
2168 | return 0; |
2169 | ||
e066b83c JK |
2170 | if (SIT_I(sbi)->last_victim[ALLOC_NEXT]) |
2171 | return SIT_I(sbi)->last_victim[ALLOC_NEXT]; | |
07939627 JK |
2172 | |
2173 | /* find segments from 0 to reuse freed segments */ | |
2174 | if (sbi->alloc_mode == ALLOC_MODE_REUSE) | |
2175 | return 0; | |
2176 | ||
7a20b8a6 JK |
2177 | return CURSEG_I(sbi, type)->segno; |
2178 | } | |
2179 | ||
0a8165d7 | 2180 | /* |
351df4b2 JK |
2181 | * Allocate a current working segment. |
2182 | * This function always allocates a free segment in LFS manner. | |
2183 | */ | |
2184 | static void new_curseg(struct f2fs_sb_info *sbi, int type, bool new_sec) | |
2185 | { | |
2186 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2187 | unsigned int segno = curseg->segno; | |
2188 | int dir = ALLOC_LEFT; | |
2189 | ||
2190 | write_sum_page(sbi, curseg->sum_blk, | |
81fb5e87 | 2191 | GET_SUM_BLOCK(sbi, segno)); |
351df4b2 JK |
2192 | if (type == CURSEG_WARM_DATA || type == CURSEG_COLD_DATA) |
2193 | dir = ALLOC_RIGHT; | |
2194 | ||
2195 | if (test_opt(sbi, NOHEAP)) | |
2196 | dir = ALLOC_RIGHT; | |
2197 | ||
7a20b8a6 | 2198 | segno = __get_next_segno(sbi, type); |
351df4b2 JK |
2199 | get_new_segment(sbi, &segno, new_sec, dir); |
2200 | curseg->next_segno = segno; | |
2201 | reset_curseg(sbi, type, 1); | |
2202 | curseg->alloc_type = LFS; | |
2203 | } | |
2204 | ||
2205 | static void __next_free_blkoff(struct f2fs_sb_info *sbi, | |
2206 | struct curseg_info *seg, block_t start) | |
2207 | { | |
2208 | struct seg_entry *se = get_seg_entry(sbi, seg->segno); | |
e81c93cf | 2209 | int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long); |
60a3b782 | 2210 | unsigned long *target_map = SIT_I(sbi)->tmp_map; |
e81c93cf CL |
2211 | unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map; |
2212 | unsigned long *cur_map = (unsigned long *)se->cur_valid_map; | |
2213 | int i, pos; | |
2214 | ||
2215 | for (i = 0; i < entries; i++) | |
2216 | target_map[i] = ckpt_map[i] | cur_map[i]; | |
2217 | ||
2218 | pos = __find_rev_next_zero_bit(target_map, sbi->blocks_per_seg, start); | |
2219 | ||
2220 | seg->next_blkoff = pos; | |
351df4b2 JK |
2221 | } |
2222 | ||
0a8165d7 | 2223 | /* |
351df4b2 JK |
2224 | * If a segment is written by LFS manner, next block offset is just obtained |
2225 | * by increasing the current block offset. However, if a segment is written by | |
2226 | * SSR manner, next block offset obtained by calling __next_free_blkoff | |
2227 | */ | |
2228 | static void __refresh_next_blkoff(struct f2fs_sb_info *sbi, | |
2229 | struct curseg_info *seg) | |
2230 | { | |
2231 | if (seg->alloc_type == SSR) | |
2232 | __next_free_blkoff(sbi, seg, seg->next_blkoff + 1); | |
2233 | else | |
2234 | seg->next_blkoff++; | |
2235 | } | |
2236 | ||
0a8165d7 | 2237 | /* |
e1c42045 | 2238 | * This function always allocates a used segment(from dirty seglist) by SSR |
351df4b2 JK |
2239 | * manner, so it should recover the existing segment information of valid blocks |
2240 | */ | |
025d63a4 | 2241 | static void change_curseg(struct f2fs_sb_info *sbi, int type) |
351df4b2 JK |
2242 | { |
2243 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
2244 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2245 | unsigned int new_segno = curseg->next_segno; | |
2246 | struct f2fs_summary_block *sum_node; | |
2247 | struct page *sum_page; | |
2248 | ||
2249 | write_sum_page(sbi, curseg->sum_blk, | |
2250 | GET_SUM_BLOCK(sbi, curseg->segno)); | |
2251 | __set_test_and_inuse(sbi, new_segno); | |
2252 | ||
2253 | mutex_lock(&dirty_i->seglist_lock); | |
2254 | __remove_dirty_segment(sbi, new_segno, PRE); | |
2255 | __remove_dirty_segment(sbi, new_segno, DIRTY); | |
2256 | mutex_unlock(&dirty_i->seglist_lock); | |
2257 | ||
2258 | reset_curseg(sbi, type, 1); | |
2259 | curseg->alloc_type = SSR; | |
2260 | __next_free_blkoff(sbi, curseg, 0); | |
2261 | ||
025d63a4 CY |
2262 | sum_page = get_sum_page(sbi, new_segno); |
2263 | sum_node = (struct f2fs_summary_block *)page_address(sum_page); | |
2264 | memcpy(curseg->sum_blk, sum_node, SUM_ENTRY_SIZE); | |
2265 | f2fs_put_page(sum_page, 1); | |
351df4b2 JK |
2266 | } |
2267 | ||
43727527 JK |
2268 | static int get_ssr_segment(struct f2fs_sb_info *sbi, int type) |
2269 | { | |
2270 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2271 | const struct victim_selection *v_ops = DIRTY_I(sbi)->v_ops; | |
e066b83c | 2272 | unsigned segno = NULL_SEGNO; |
d27c3d89 CY |
2273 | int i, cnt; |
2274 | bool reversed = false; | |
c192f7a4 JK |
2275 | |
2276 | /* need_SSR() already forces to do this */ | |
e066b83c JK |
2277 | if (v_ops->get_victim(sbi, &segno, BG_GC, type, SSR)) { |
2278 | curseg->next_segno = segno; | |
c192f7a4 | 2279 | return 1; |
e066b83c | 2280 | } |
43727527 | 2281 | |
70d625cb JK |
2282 | /* For node segments, let's do SSR more intensively */ |
2283 | if (IS_NODESEG(type)) { | |
d27c3d89 CY |
2284 | if (type >= CURSEG_WARM_NODE) { |
2285 | reversed = true; | |
2286 | i = CURSEG_COLD_NODE; | |
2287 | } else { | |
2288 | i = CURSEG_HOT_NODE; | |
2289 | } | |
2290 | cnt = NR_CURSEG_NODE_TYPE; | |
70d625cb | 2291 | } else { |
d27c3d89 CY |
2292 | if (type >= CURSEG_WARM_DATA) { |
2293 | reversed = true; | |
2294 | i = CURSEG_COLD_DATA; | |
2295 | } else { | |
2296 | i = CURSEG_HOT_DATA; | |
2297 | } | |
2298 | cnt = NR_CURSEG_DATA_TYPE; | |
70d625cb | 2299 | } |
43727527 | 2300 | |
d27c3d89 | 2301 | for (; cnt-- > 0; reversed ? i-- : i++) { |
c192f7a4 JK |
2302 | if (i == type) |
2303 | continue; | |
e066b83c JK |
2304 | if (v_ops->get_victim(sbi, &segno, BG_GC, i, SSR)) { |
2305 | curseg->next_segno = segno; | |
43727527 | 2306 | return 1; |
e066b83c | 2307 | } |
c192f7a4 | 2308 | } |
43727527 JK |
2309 | return 0; |
2310 | } | |
2311 | ||
351df4b2 JK |
2312 | /* |
2313 | * flush out current segment and replace it with new segment | |
2314 | * This function should be returned with success, otherwise BUG | |
2315 | */ | |
2316 | static void allocate_segment_by_default(struct f2fs_sb_info *sbi, | |
2317 | int type, bool force) | |
2318 | { | |
a7881893 JK |
2319 | struct curseg_info *curseg = CURSEG_I(sbi, type); |
2320 | ||
7b405275 | 2321 | if (force) |
351df4b2 | 2322 | new_curseg(sbi, type, true); |
5b6c6be2 JK |
2323 | else if (!is_set_ckpt_flags(sbi, CP_CRC_RECOVERY_FLAG) && |
2324 | type == CURSEG_WARM_NODE) | |
351df4b2 | 2325 | new_curseg(sbi, type, false); |
a7881893 JK |
2326 | else if (curseg->alloc_type == LFS && is_next_segment_free(sbi, type)) |
2327 | new_curseg(sbi, type, false); | |
351df4b2 | 2328 | else if (need_SSR(sbi) && get_ssr_segment(sbi, type)) |
025d63a4 | 2329 | change_curseg(sbi, type); |
351df4b2 JK |
2330 | else |
2331 | new_curseg(sbi, type, false); | |
dcdfff65 | 2332 | |
a7881893 | 2333 | stat_inc_seg_type(sbi, curseg); |
351df4b2 JK |
2334 | } |
2335 | ||
2336 | void allocate_new_segments(struct f2fs_sb_info *sbi) | |
2337 | { | |
6ae1be13 JK |
2338 | struct curseg_info *curseg; |
2339 | unsigned int old_segno; | |
351df4b2 JK |
2340 | int i; |
2341 | ||
3d26fa6b CY |
2342 | down_write(&SIT_I(sbi)->sentry_lock); |
2343 | ||
6ae1be13 JK |
2344 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { |
2345 | curseg = CURSEG_I(sbi, i); | |
2346 | old_segno = curseg->segno; | |
2347 | SIT_I(sbi)->s_ops->allocate_segment(sbi, i, true); | |
2348 | locate_dirty_segment(sbi, old_segno); | |
2349 | } | |
3d26fa6b CY |
2350 | |
2351 | up_write(&SIT_I(sbi)->sentry_lock); | |
351df4b2 JK |
2352 | } |
2353 | ||
2354 | static const struct segment_allocation default_salloc_ops = { | |
2355 | .allocate_segment = allocate_segment_by_default, | |
2356 | }; | |
2357 | ||
25290fa5 JK |
2358 | bool exist_trim_candidates(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
2359 | { | |
2360 | __u64 trim_start = cpc->trim_start; | |
2361 | bool has_candidate = false; | |
2362 | ||
3d26fa6b | 2363 | down_write(&SIT_I(sbi)->sentry_lock); |
25290fa5 JK |
2364 | for (; cpc->trim_start <= cpc->trim_end; cpc->trim_start++) { |
2365 | if (add_discard_addrs(sbi, cpc, true)) { | |
2366 | has_candidate = true; | |
2367 | break; | |
2368 | } | |
2369 | } | |
3d26fa6b | 2370 | up_write(&SIT_I(sbi)->sentry_lock); |
25290fa5 JK |
2371 | |
2372 | cpc->trim_start = trim_start; | |
2373 | return has_candidate; | |
2374 | } | |
2375 | ||
4b2fecc8 JK |
2376 | int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range) |
2377 | { | |
f7ef9b83 JK |
2378 | __u64 start = F2FS_BYTES_TO_BLK(range->start); |
2379 | __u64 end = start + F2FS_BYTES_TO_BLK(range->len) - 1; | |
8412663d CY |
2380 | unsigned int start_segno, end_segno, cur_segno; |
2381 | block_t start_block, end_block; | |
4b2fecc8 | 2382 | struct cp_control cpc; |
78997b56 | 2383 | struct discard_policy dpolicy; |
0ea80512 | 2384 | unsigned long long trimmed = 0; |
c34f42e2 | 2385 | int err = 0; |
4b2fecc8 | 2386 | |
836b5a63 | 2387 | if (start >= MAX_BLKADDR(sbi) || range->len < sbi->blocksize) |
4b2fecc8 JK |
2388 | return -EINVAL; |
2389 | ||
7cd8558b | 2390 | if (end <= MAIN_BLKADDR(sbi)) |
4b2fecc8 JK |
2391 | goto out; |
2392 | ||
ed214a11 YH |
2393 | if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) { |
2394 | f2fs_msg(sbi->sb, KERN_WARNING, | |
2395 | "Found FS corruption, run fsck to fix."); | |
2396 | goto out; | |
2397 | } | |
2398 | ||
4b2fecc8 | 2399 | /* start/end segment number in main_area */ |
7cd8558b JK |
2400 | start_segno = (start <= MAIN_BLKADDR(sbi)) ? 0 : GET_SEGNO(sbi, start); |
2401 | end_segno = (end >= MAX_BLKADDR(sbi)) ? MAIN_SEGS(sbi) - 1 : | |
2402 | GET_SEGNO(sbi, end); | |
8412663d | 2403 | |
4b2fecc8 | 2404 | cpc.reason = CP_DISCARD; |
836b5a63 | 2405 | cpc.trim_minlen = max_t(__u64, 1, F2FS_BYTES_TO_BLK(range->minlen)); |
4b2fecc8 JK |
2406 | |
2407 | /* do checkpoint to issue discard commands safely */ | |
8412663d CY |
2408 | for (cur_segno = start_segno; cur_segno <= end_segno; |
2409 | cur_segno = cpc.trim_end + 1) { | |
2410 | cpc.trim_start = cur_segno; | |
a66cdd98 JK |
2411 | |
2412 | if (sbi->discard_blks == 0) | |
2413 | break; | |
2414 | else if (sbi->discard_blks < BATCHED_TRIM_BLOCKS(sbi)) | |
2415 | cpc.trim_end = end_segno; | |
2416 | else | |
2417 | cpc.trim_end = min_t(unsigned int, | |
8412663d | 2418 | rounddown(cur_segno + |
bba681cb JK |
2419 | BATCHED_TRIM_SEGMENTS(sbi), |
2420 | sbi->segs_per_sec) - 1, end_segno); | |
2421 | ||
2422 | mutex_lock(&sbi->gc_mutex); | |
c34f42e2 | 2423 | err = write_checkpoint(sbi, &cpc); |
bba681cb | 2424 | mutex_unlock(&sbi->gc_mutex); |
e9328353 CY |
2425 | if (err) |
2426 | break; | |
74fa5f3d CY |
2427 | |
2428 | schedule(); | |
bba681cb | 2429 | } |
8412663d CY |
2430 | |
2431 | start_block = START_BLOCK(sbi, start_segno); | |
2432 | end_block = START_BLOCK(sbi, min(cur_segno, end_segno) + 1); | |
2433 | ||
78997b56 CY |
2434 | init_discard_policy(&dpolicy, DPOLICY_FSTRIM, cpc.trim_minlen); |
2435 | __issue_discard_cmd_range(sbi, &dpolicy, start_block, end_block); | |
0ea80512 CY |
2436 | trimmed = __wait_discard_cmd_range(sbi, &dpolicy, |
2437 | start_block, end_block); | |
4b2fecc8 | 2438 | out: |
0ea80512 | 2439 | range->len = F2FS_BLK_TO_BYTES(trimmed); |
c34f42e2 | 2440 | return err; |
4b2fecc8 JK |
2441 | } |
2442 | ||
351df4b2 JK |
2443 | static bool __has_curseg_space(struct f2fs_sb_info *sbi, int type) |
2444 | { | |
2445 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2446 | if (curseg->next_blkoff < sbi->blocks_per_seg) | |
2447 | return true; | |
2448 | return false; | |
2449 | } | |
2450 | ||
4f0a03d3 HL |
2451 | int rw_hint_to_seg_type(enum rw_hint hint) |
2452 | { | |
2453 | switch (hint) { | |
2454 | case WRITE_LIFE_SHORT: | |
2455 | return CURSEG_HOT_DATA; | |
2456 | case WRITE_LIFE_EXTREME: | |
2457 | return CURSEG_COLD_DATA; | |
2458 | default: | |
2459 | return CURSEG_WARM_DATA; | |
2460 | } | |
2461 | } | |
2462 | ||
0cdd3195 HL |
2463 | /* This returns write hints for each segment type. This hints will be |
2464 | * passed down to block layer. There are mapping tables which depend on | |
2465 | * the mount option 'whint_mode'. | |
2466 | * | |
2467 | * 1) whint_mode=off. F2FS only passes down WRITE_LIFE_NOT_SET. | |
2468 | * | |
2469 | * 2) whint_mode=user-based. F2FS tries to pass down hints given by users. | |
2470 | * | |
2471 | * User F2FS Block | |
2472 | * ---- ---- ----- | |
2473 | * META WRITE_LIFE_NOT_SET | |
2474 | * HOT_NODE " | |
2475 | * WARM_NODE " | |
2476 | * COLD_NODE " | |
2477 | * ioctl(COLD) COLD_DATA WRITE_LIFE_EXTREME | |
2478 | * extension list " " | |
2479 | * | |
2480 | * -- buffered io | |
2481 | * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME | |
2482 | * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT | |
2483 | * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET | |
2484 | * WRITE_LIFE_NONE " " | |
2485 | * WRITE_LIFE_MEDIUM " " | |
2486 | * WRITE_LIFE_LONG " " | |
2487 | * | |
2488 | * -- direct io | |
2489 | * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME | |
2490 | * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT | |
2491 | * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET | |
2492 | * WRITE_LIFE_NONE " WRITE_LIFE_NONE | |
2493 | * WRITE_LIFE_MEDIUM " WRITE_LIFE_MEDIUM | |
2494 | * WRITE_LIFE_LONG " WRITE_LIFE_LONG | |
2495 | * | |
f2e703f9 HL |
2496 | * 3) whint_mode=fs-based. F2FS passes down hints with its policy. |
2497 | * | |
2498 | * User F2FS Block | |
2499 | * ---- ---- ----- | |
2500 | * META WRITE_LIFE_MEDIUM; | |
2501 | * HOT_NODE WRITE_LIFE_NOT_SET | |
2502 | * WARM_NODE " | |
2503 | * COLD_NODE WRITE_LIFE_NONE | |
2504 | * ioctl(COLD) COLD_DATA WRITE_LIFE_EXTREME | |
2505 | * extension list " " | |
2506 | * | |
2507 | * -- buffered io | |
2508 | * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME | |
2509 | * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT | |
2510 | * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_LONG | |
2511 | * WRITE_LIFE_NONE " " | |
2512 | * WRITE_LIFE_MEDIUM " " | |
2513 | * WRITE_LIFE_LONG " " | |
2514 | * | |
2515 | * -- direct io | |
2516 | * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME | |
2517 | * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT | |
2518 | * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET | |
2519 | * WRITE_LIFE_NONE " WRITE_LIFE_NONE | |
2520 | * WRITE_LIFE_MEDIUM " WRITE_LIFE_MEDIUM | |
2521 | * WRITE_LIFE_LONG " WRITE_LIFE_LONG | |
0cdd3195 HL |
2522 | */ |
2523 | ||
2524 | enum rw_hint io_type_to_rw_hint(struct f2fs_sb_info *sbi, | |
2525 | enum page_type type, enum temp_type temp) | |
2526 | { | |
2527 | if (sbi->whint_mode == WHINT_MODE_USER) { | |
2528 | if (type == DATA) { | |
f2e703f9 | 2529 | if (temp == WARM) |
0cdd3195 | 2530 | return WRITE_LIFE_NOT_SET; |
f2e703f9 HL |
2531 | else if (temp == HOT) |
2532 | return WRITE_LIFE_SHORT; | |
2533 | else if (temp == COLD) | |
2534 | return WRITE_LIFE_EXTREME; | |
0cdd3195 HL |
2535 | } else { |
2536 | return WRITE_LIFE_NOT_SET; | |
2537 | } | |
f2e703f9 HL |
2538 | } else if (sbi->whint_mode == WHINT_MODE_FS) { |
2539 | if (type == DATA) { | |
2540 | if (temp == WARM) | |
2541 | return WRITE_LIFE_LONG; | |
2542 | else if (temp == HOT) | |
2543 | return WRITE_LIFE_SHORT; | |
2544 | else if (temp == COLD) | |
2545 | return WRITE_LIFE_EXTREME; | |
2546 | } else if (type == NODE) { | |
2547 | if (temp == WARM || temp == HOT) | |
2548 | return WRITE_LIFE_NOT_SET; | |
2549 | else if (temp == COLD) | |
2550 | return WRITE_LIFE_NONE; | |
2551 | } else if (type == META) { | |
2552 | return WRITE_LIFE_MEDIUM; | |
2553 | } | |
0cdd3195 | 2554 | } |
f2e703f9 | 2555 | return WRITE_LIFE_NOT_SET; |
0cdd3195 HL |
2556 | } |
2557 | ||
81377bd6 | 2558 | static int __get_segment_type_2(struct f2fs_io_info *fio) |
351df4b2 | 2559 | { |
81377bd6 | 2560 | if (fio->type == DATA) |
351df4b2 JK |
2561 | return CURSEG_HOT_DATA; |
2562 | else | |
2563 | return CURSEG_HOT_NODE; | |
2564 | } | |
2565 | ||
81377bd6 | 2566 | static int __get_segment_type_4(struct f2fs_io_info *fio) |
351df4b2 | 2567 | { |
81377bd6 JK |
2568 | if (fio->type == DATA) { |
2569 | struct inode *inode = fio->page->mapping->host; | |
351df4b2 JK |
2570 | |
2571 | if (S_ISDIR(inode->i_mode)) | |
2572 | return CURSEG_HOT_DATA; | |
2573 | else | |
2574 | return CURSEG_COLD_DATA; | |
2575 | } else { | |
81377bd6 | 2576 | if (IS_DNODE(fio->page) && is_cold_node(fio->page)) |
a344b9fd | 2577 | return CURSEG_WARM_NODE; |
351df4b2 JK |
2578 | else |
2579 | return CURSEG_COLD_NODE; | |
2580 | } | |
2581 | } | |
2582 | ||
81377bd6 | 2583 | static int __get_segment_type_6(struct f2fs_io_info *fio) |
351df4b2 | 2584 | { |
81377bd6 JK |
2585 | if (fio->type == DATA) { |
2586 | struct inode *inode = fio->page->mapping->host; | |
351df4b2 | 2587 | |
81377bd6 | 2588 | if (is_cold_data(fio->page) || file_is_cold(inode)) |
351df4b2 | 2589 | return CURSEG_COLD_DATA; |
ef095d19 JK |
2590 | if (is_inode_flag_set(inode, FI_HOT_DATA)) |
2591 | return CURSEG_HOT_DATA; | |
4f0a03d3 | 2592 | return rw_hint_to_seg_type(inode->i_write_hint); |
351df4b2 | 2593 | } else { |
81377bd6 JK |
2594 | if (IS_DNODE(fio->page)) |
2595 | return is_cold_node(fio->page) ? CURSEG_WARM_NODE : | |
351df4b2 | 2596 | CURSEG_HOT_NODE; |
ef095d19 | 2597 | return CURSEG_COLD_NODE; |
351df4b2 JK |
2598 | } |
2599 | } | |
2600 | ||
81377bd6 | 2601 | static int __get_segment_type(struct f2fs_io_info *fio) |
351df4b2 | 2602 | { |
a912b54d JK |
2603 | int type = 0; |
2604 | ||
81377bd6 | 2605 | switch (fio->sbi->active_logs) { |
351df4b2 | 2606 | case 2: |
a912b54d JK |
2607 | type = __get_segment_type_2(fio); |
2608 | break; | |
351df4b2 | 2609 | case 4: |
a912b54d JK |
2610 | type = __get_segment_type_4(fio); |
2611 | break; | |
2612 | case 6: | |
2613 | type = __get_segment_type_6(fio); | |
2614 | break; | |
2615 | default: | |
2616 | f2fs_bug_on(fio->sbi, true); | |
351df4b2 | 2617 | } |
81377bd6 | 2618 | |
a912b54d JK |
2619 | if (IS_HOT(type)) |
2620 | fio->temp = HOT; | |
2621 | else if (IS_WARM(type)) | |
2622 | fio->temp = WARM; | |
2623 | else | |
2624 | fio->temp = COLD; | |
2625 | return type; | |
351df4b2 JK |
2626 | } |
2627 | ||
bfad7c2d JK |
2628 | void allocate_data_block(struct f2fs_sb_info *sbi, struct page *page, |
2629 | block_t old_blkaddr, block_t *new_blkaddr, | |
fb830fc5 CY |
2630 | struct f2fs_summary *sum, int type, |
2631 | struct f2fs_io_info *fio, bool add_list) | |
351df4b2 JK |
2632 | { |
2633 | struct sit_info *sit_i = SIT_I(sbi); | |
6ae1be13 | 2634 | struct curseg_info *curseg = CURSEG_I(sbi, type); |
351df4b2 | 2635 | |
2b60311d CY |
2636 | down_read(&SM_I(sbi)->curseg_lock); |
2637 | ||
351df4b2 | 2638 | mutex_lock(&curseg->curseg_mutex); |
3d26fa6b | 2639 | down_write(&sit_i->sentry_lock); |
351df4b2 JK |
2640 | |
2641 | *new_blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); | |
351df4b2 | 2642 | |
4e6a8d9b JK |
2643 | f2fs_wait_discard_bio(sbi, *new_blkaddr); |
2644 | ||
351df4b2 JK |
2645 | /* |
2646 | * __add_sum_entry should be resided under the curseg_mutex | |
2647 | * because, this function updates a summary entry in the | |
2648 | * current summary block. | |
2649 | */ | |
e79efe3b | 2650 | __add_sum_entry(sbi, type, sum); |
351df4b2 | 2651 | |
351df4b2 | 2652 | __refresh_next_blkoff(sbi, curseg); |
dcdfff65 JK |
2653 | |
2654 | stat_inc_block_count(sbi, curseg); | |
351df4b2 | 2655 | |
65f1b80b YS |
2656 | /* |
2657 | * SIT information should be updated before segment allocation, | |
2658 | * since SSR needs latest valid block information. | |
2659 | */ | |
2660 | update_sit_entry(sbi, *new_blkaddr, 1); | |
2661 | if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) | |
2662 | update_sit_entry(sbi, old_blkaddr, -1); | |
2663 | ||
c6f82fe9 JK |
2664 | if (!__has_curseg_space(sbi, type)) |
2665 | sit_i->s_ops->allocate_segment(sbi, type, false); | |
65f1b80b | 2666 | |
351df4b2 | 2667 | /* |
65f1b80b YS |
2668 | * segment dirty status should be updated after segment allocation, |
2669 | * so we just need to update status only one time after previous | |
2670 | * segment being closed. | |
351df4b2 | 2671 | */ |
65f1b80b YS |
2672 | locate_dirty_segment(sbi, GET_SEGNO(sbi, old_blkaddr)); |
2673 | locate_dirty_segment(sbi, GET_SEGNO(sbi, *new_blkaddr)); | |
5e443818 | 2674 | |
3d26fa6b | 2675 | up_write(&sit_i->sentry_lock); |
351df4b2 | 2676 | |
704956ec | 2677 | if (page && IS_NODESEG(type)) { |
351df4b2 JK |
2678 | fill_node_footer_blkaddr(page, NEXT_FREE_BLKADDR(sbi, curseg)); |
2679 | ||
704956ec CY |
2680 | f2fs_inode_chksum_set(sbi, page); |
2681 | } | |
2682 | ||
fb830fc5 CY |
2683 | if (add_list) { |
2684 | struct f2fs_bio_info *io; | |
2685 | ||
2686 | INIT_LIST_HEAD(&fio->list); | |
2687 | fio->in_list = true; | |
2688 | io = sbi->write_io[fio->type] + fio->temp; | |
2689 | spin_lock(&io->io_lock); | |
2690 | list_add_tail(&fio->list, &io->io_list); | |
2691 | spin_unlock(&io->io_lock); | |
2692 | } | |
2693 | ||
bfad7c2d | 2694 | mutex_unlock(&curseg->curseg_mutex); |
2b60311d CY |
2695 | |
2696 | up_read(&SM_I(sbi)->curseg_lock); | |
bfad7c2d JK |
2697 | } |
2698 | ||
39d787be CY |
2699 | static void update_device_state(struct f2fs_io_info *fio) |
2700 | { | |
2701 | struct f2fs_sb_info *sbi = fio->sbi; | |
2702 | unsigned int devidx; | |
2703 | ||
2704 | if (!sbi->s_ndevs) | |
2705 | return; | |
2706 | ||
2707 | devidx = f2fs_target_device_index(sbi, fio->new_blkaddr); | |
2708 | ||
2709 | /* update device state for fsync */ | |
2710 | set_dirty_device(sbi, fio->ino, devidx, FLUSH_INO); | |
1228b482 CY |
2711 | |
2712 | /* update device state for checkpoint */ | |
2713 | if (!f2fs_test_bit(devidx, (char *)&sbi->dirty_device)) { | |
2714 | spin_lock(&sbi->dev_lock); | |
2715 | f2fs_set_bit(devidx, (char *)&sbi->dirty_device); | |
2716 | spin_unlock(&sbi->dev_lock); | |
2717 | } | |
39d787be CY |
2718 | } |
2719 | ||
05ca3632 | 2720 | static void do_write_page(struct f2fs_summary *sum, struct f2fs_io_info *fio) |
bfad7c2d | 2721 | { |
81377bd6 | 2722 | int type = __get_segment_type(fio); |
0a595eba | 2723 | int err; |
bfad7c2d | 2724 | |
0a595eba | 2725 | reallocate: |
7a9d7548 | 2726 | allocate_data_block(fio->sbi, fio->page, fio->old_blkaddr, |
fb830fc5 | 2727 | &fio->new_blkaddr, sum, type, fio, true); |
bfad7c2d | 2728 | |
351df4b2 | 2729 | /* writeout dirty page into bdev */ |
b9109b0e | 2730 | err = f2fs_submit_page_write(fio); |
0a595eba JK |
2731 | if (err == -EAGAIN) { |
2732 | fio->old_blkaddr = fio->new_blkaddr; | |
2733 | goto reallocate; | |
39d787be CY |
2734 | } else if (!err) { |
2735 | update_device_state(fio); | |
0a595eba | 2736 | } |
351df4b2 JK |
2737 | } |
2738 | ||
b0af6d49 CY |
2739 | void write_meta_page(struct f2fs_sb_info *sbi, struct page *page, |
2740 | enum iostat_type io_type) | |
351df4b2 | 2741 | { |
458e6197 | 2742 | struct f2fs_io_info fio = { |
05ca3632 | 2743 | .sbi = sbi, |
458e6197 | 2744 | .type = META, |
0cdd3195 | 2745 | .temp = HOT, |
04d328de | 2746 | .op = REQ_OP_WRITE, |
70fd7614 | 2747 | .op_flags = REQ_SYNC | REQ_META | REQ_PRIO, |
7a9d7548 CY |
2748 | .old_blkaddr = page->index, |
2749 | .new_blkaddr = page->index, | |
05ca3632 | 2750 | .page = page, |
4375a336 | 2751 | .encrypted_page = NULL, |
fb830fc5 | 2752 | .in_list = false, |
458e6197 JK |
2753 | }; |
2754 | ||
2b947003 | 2755 | if (unlikely(page->index >= MAIN_BLKADDR(sbi))) |
04d328de | 2756 | fio.op_flags &= ~REQ_META; |
2b947003 | 2757 | |
351df4b2 | 2758 | set_page_writeback(page); |
b9109b0e | 2759 | f2fs_submit_page_write(&fio); |
b0af6d49 CY |
2760 | |
2761 | f2fs_update_iostat(sbi, io_type, F2FS_BLKSIZE); | |
351df4b2 JK |
2762 | } |
2763 | ||
05ca3632 | 2764 | void write_node_page(unsigned int nid, struct f2fs_io_info *fio) |
351df4b2 JK |
2765 | { |
2766 | struct f2fs_summary sum; | |
05ca3632 | 2767 | |
351df4b2 | 2768 | set_summary(&sum, nid, 0, 0); |
05ca3632 | 2769 | do_write_page(&sum, fio); |
b0af6d49 CY |
2770 | |
2771 | f2fs_update_iostat(fio->sbi, fio->io_type, F2FS_BLKSIZE); | |
351df4b2 JK |
2772 | } |
2773 | ||
05ca3632 | 2774 | void write_data_page(struct dnode_of_data *dn, struct f2fs_io_info *fio) |
351df4b2 | 2775 | { |
05ca3632 | 2776 | struct f2fs_sb_info *sbi = fio->sbi; |
351df4b2 JK |
2777 | struct f2fs_summary sum; |
2778 | struct node_info ni; | |
2779 | ||
9850cf4a | 2780 | f2fs_bug_on(sbi, dn->data_blkaddr == NULL_ADDR); |
351df4b2 JK |
2781 | get_node_info(sbi, dn->nid, &ni); |
2782 | set_summary(&sum, dn->nid, dn->ofs_in_node, ni.version); | |
05ca3632 | 2783 | do_write_page(&sum, fio); |
f28b3434 | 2784 | f2fs_update_data_blkaddr(dn, fio->new_blkaddr); |
b0af6d49 CY |
2785 | |
2786 | f2fs_update_iostat(sbi, fio->io_type, F2FS_BLKSIZE); | |
351df4b2 JK |
2787 | } |
2788 | ||
d1b3e72d | 2789 | int rewrite_data_page(struct f2fs_io_info *fio) |
351df4b2 | 2790 | { |
b0af6d49 CY |
2791 | int err; |
2792 | ||
7a9d7548 | 2793 | fio->new_blkaddr = fio->old_blkaddr; |
0cdd3195 HL |
2794 | /* i/o temperature is needed for passing down write hints */ |
2795 | __get_segment_type(fio); | |
05ca3632 | 2796 | stat_inc_inplace_blocks(fio->sbi); |
b0af6d49 CY |
2797 | |
2798 | err = f2fs_submit_page_bio(fio); | |
39d787be CY |
2799 | if (!err) |
2800 | update_device_state(fio); | |
b0af6d49 CY |
2801 | |
2802 | f2fs_update_iostat(fio->sbi, fio->io_type, F2FS_BLKSIZE); | |
2803 | ||
2804 | return err; | |
351df4b2 JK |
2805 | } |
2806 | ||
2b60311d CY |
2807 | static inline int __f2fs_get_curseg(struct f2fs_sb_info *sbi, |
2808 | unsigned int segno) | |
2809 | { | |
2810 | int i; | |
2811 | ||
2812 | for (i = CURSEG_HOT_DATA; i < NO_CHECK_TYPE; i++) { | |
2813 | if (CURSEG_I(sbi, i)->segno == segno) | |
2814 | break; | |
2815 | } | |
2816 | return i; | |
2817 | } | |
2818 | ||
4356e48e | 2819 | void __f2fs_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum, |
19f106bc | 2820 | block_t old_blkaddr, block_t new_blkaddr, |
28bc106b | 2821 | bool recover_curseg, bool recover_newaddr) |
351df4b2 JK |
2822 | { |
2823 | struct sit_info *sit_i = SIT_I(sbi); | |
2824 | struct curseg_info *curseg; | |
2825 | unsigned int segno, old_cursegno; | |
2826 | struct seg_entry *se; | |
2827 | int type; | |
19f106bc | 2828 | unsigned short old_blkoff; |
351df4b2 JK |
2829 | |
2830 | segno = GET_SEGNO(sbi, new_blkaddr); | |
2831 | se = get_seg_entry(sbi, segno); | |
2832 | type = se->type; | |
2833 | ||
2b60311d CY |
2834 | down_write(&SM_I(sbi)->curseg_lock); |
2835 | ||
19f106bc CY |
2836 | if (!recover_curseg) { |
2837 | /* for recovery flow */ | |
2838 | if (se->valid_blocks == 0 && !IS_CURSEG(sbi, segno)) { | |
2839 | if (old_blkaddr == NULL_ADDR) | |
2840 | type = CURSEG_COLD_DATA; | |
2841 | else | |
2842 | type = CURSEG_WARM_DATA; | |
2843 | } | |
2844 | } else { | |
2b60311d CY |
2845 | if (IS_CURSEG(sbi, segno)) { |
2846 | /* se->type is volatile as SSR allocation */ | |
2847 | type = __f2fs_get_curseg(sbi, segno); | |
2848 | f2fs_bug_on(sbi, type == NO_CHECK_TYPE); | |
2849 | } else { | |
351df4b2 | 2850 | type = CURSEG_WARM_DATA; |
2b60311d | 2851 | } |
351df4b2 | 2852 | } |
19f106bc | 2853 | |
2c190504 | 2854 | f2fs_bug_on(sbi, !IS_DATASEG(type)); |
351df4b2 JK |
2855 | curseg = CURSEG_I(sbi, type); |
2856 | ||
2857 | mutex_lock(&curseg->curseg_mutex); | |
3d26fa6b | 2858 | down_write(&sit_i->sentry_lock); |
351df4b2 JK |
2859 | |
2860 | old_cursegno = curseg->segno; | |
19f106bc | 2861 | old_blkoff = curseg->next_blkoff; |
351df4b2 JK |
2862 | |
2863 | /* change the current segment */ | |
2864 | if (segno != curseg->segno) { | |
2865 | curseg->next_segno = segno; | |
025d63a4 | 2866 | change_curseg(sbi, type); |
351df4b2 JK |
2867 | } |
2868 | ||
491c0854 | 2869 | curseg->next_blkoff = GET_BLKOFF_FROM_SEG0(sbi, new_blkaddr); |
e79efe3b | 2870 | __add_sum_entry(sbi, type, sum); |
351df4b2 | 2871 | |
28bc106b | 2872 | if (!recover_curseg || recover_newaddr) |
6e2c64ad JK |
2873 | update_sit_entry(sbi, new_blkaddr, 1); |
2874 | if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) | |
2875 | update_sit_entry(sbi, old_blkaddr, -1); | |
2876 | ||
2877 | locate_dirty_segment(sbi, GET_SEGNO(sbi, old_blkaddr)); | |
2878 | locate_dirty_segment(sbi, GET_SEGNO(sbi, new_blkaddr)); | |
2879 | ||
351df4b2 | 2880 | locate_dirty_segment(sbi, old_cursegno); |
351df4b2 | 2881 | |
19f106bc CY |
2882 | if (recover_curseg) { |
2883 | if (old_cursegno != curseg->segno) { | |
2884 | curseg->next_segno = old_cursegno; | |
025d63a4 | 2885 | change_curseg(sbi, type); |
19f106bc CY |
2886 | } |
2887 | curseg->next_blkoff = old_blkoff; | |
2888 | } | |
2889 | ||
3d26fa6b | 2890 | up_write(&sit_i->sentry_lock); |
351df4b2 | 2891 | mutex_unlock(&curseg->curseg_mutex); |
2b60311d | 2892 | up_write(&SM_I(sbi)->curseg_lock); |
351df4b2 JK |
2893 | } |
2894 | ||
528e3459 CY |
2895 | void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn, |
2896 | block_t old_addr, block_t new_addr, | |
28bc106b CY |
2897 | unsigned char version, bool recover_curseg, |
2898 | bool recover_newaddr) | |
528e3459 CY |
2899 | { |
2900 | struct f2fs_summary sum; | |
2901 | ||
2902 | set_summary(&sum, dn->nid, dn->ofs_in_node, version); | |
2903 | ||
28bc106b CY |
2904 | __f2fs_replace_block(sbi, &sum, old_addr, new_addr, |
2905 | recover_curseg, recover_newaddr); | |
528e3459 | 2906 | |
f28b3434 | 2907 | f2fs_update_data_blkaddr(dn, new_addr); |
528e3459 CY |
2908 | } |
2909 | ||
93dfe2ac | 2910 | void f2fs_wait_on_page_writeback(struct page *page, |
fec1d657 | 2911 | enum page_type type, bool ordered) |
93dfe2ac | 2912 | { |
93dfe2ac | 2913 | if (PageWriteback(page)) { |
4081363f JK |
2914 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); |
2915 | ||
b9109b0e JK |
2916 | f2fs_submit_merged_write_cond(sbi, page->mapping->host, |
2917 | 0, page->index, type); | |
fec1d657 JK |
2918 | if (ordered) |
2919 | wait_on_page_writeback(page); | |
2920 | else | |
2921 | wait_for_stable_page(page); | |
93dfe2ac JK |
2922 | } |
2923 | } | |
2924 | ||
d4c759ee | 2925 | void f2fs_wait_on_block_writeback(struct f2fs_sb_info *sbi, block_t blkaddr) |
08b39fbd CY |
2926 | { |
2927 | struct page *cpage; | |
2928 | ||
5d4c0af4 | 2929 | if (blkaddr == NEW_ADDR || blkaddr == NULL_ADDR) |
08b39fbd CY |
2930 | return; |
2931 | ||
08b39fbd CY |
2932 | cpage = find_lock_page(META_MAPPING(sbi), blkaddr); |
2933 | if (cpage) { | |
fec1d657 | 2934 | f2fs_wait_on_page_writeback(cpage, DATA, true); |
08b39fbd CY |
2935 | f2fs_put_page(cpage, 1); |
2936 | } | |
2937 | } | |
2938 | ||
c376fc0f | 2939 | static void read_compacted_summaries(struct f2fs_sb_info *sbi) |
351df4b2 JK |
2940 | { |
2941 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
2942 | struct curseg_info *seg_i; | |
2943 | unsigned char *kaddr; | |
2944 | struct page *page; | |
2945 | block_t start; | |
2946 | int i, j, offset; | |
2947 | ||
2948 | start = start_sum_block(sbi); | |
2949 | ||
2950 | page = get_meta_page(sbi, start++); | |
2951 | kaddr = (unsigned char *)page_address(page); | |
2952 | ||
2953 | /* Step 1: restore nat cache */ | |
2954 | seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
b7ad7512 | 2955 | memcpy(seg_i->journal, kaddr, SUM_JOURNAL_SIZE); |
351df4b2 JK |
2956 | |
2957 | /* Step 2: restore sit cache */ | |
2958 | seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 2959 | memcpy(seg_i->journal, kaddr + SUM_JOURNAL_SIZE, SUM_JOURNAL_SIZE); |
351df4b2 JK |
2960 | offset = 2 * SUM_JOURNAL_SIZE; |
2961 | ||
2962 | /* Step 3: restore summary entries */ | |
2963 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
2964 | unsigned short blk_off; | |
2965 | unsigned int segno; | |
2966 | ||
2967 | seg_i = CURSEG_I(sbi, i); | |
2968 | segno = le32_to_cpu(ckpt->cur_data_segno[i]); | |
2969 | blk_off = le16_to_cpu(ckpt->cur_data_blkoff[i]); | |
2970 | seg_i->next_segno = segno; | |
2971 | reset_curseg(sbi, i, 0); | |
2972 | seg_i->alloc_type = ckpt->alloc_type[i]; | |
2973 | seg_i->next_blkoff = blk_off; | |
2974 | ||
2975 | if (seg_i->alloc_type == SSR) | |
2976 | blk_off = sbi->blocks_per_seg; | |
2977 | ||
2978 | for (j = 0; j < blk_off; j++) { | |
2979 | struct f2fs_summary *s; | |
2980 | s = (struct f2fs_summary *)(kaddr + offset); | |
2981 | seg_i->sum_blk->entries[j] = *s; | |
2982 | offset += SUMMARY_SIZE; | |
09cbfeaf | 2983 | if (offset + SUMMARY_SIZE <= PAGE_SIZE - |
351df4b2 JK |
2984 | SUM_FOOTER_SIZE) |
2985 | continue; | |
2986 | ||
2987 | f2fs_put_page(page, 1); | |
2988 | page = NULL; | |
2989 | ||
2990 | page = get_meta_page(sbi, start++); | |
2991 | kaddr = (unsigned char *)page_address(page); | |
2992 | offset = 0; | |
2993 | } | |
2994 | } | |
2995 | f2fs_put_page(page, 1); | |
351df4b2 JK |
2996 | } |
2997 | ||
2998 | static int read_normal_summaries(struct f2fs_sb_info *sbi, int type) | |
2999 | { | |
3000 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
3001 | struct f2fs_summary_block *sum; | |
3002 | struct curseg_info *curseg; | |
3003 | struct page *new; | |
3004 | unsigned short blk_off; | |
3005 | unsigned int segno = 0; | |
3006 | block_t blk_addr = 0; | |
3007 | ||
3008 | /* get segment number and block addr */ | |
3009 | if (IS_DATASEG(type)) { | |
3010 | segno = le32_to_cpu(ckpt->cur_data_segno[type]); | |
3011 | blk_off = le16_to_cpu(ckpt->cur_data_blkoff[type - | |
3012 | CURSEG_HOT_DATA]); | |
119ee914 | 3013 | if (__exist_node_summaries(sbi)) |
351df4b2 JK |
3014 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_TYPE, type); |
3015 | else | |
3016 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_DATA_TYPE, type); | |
3017 | } else { | |
3018 | segno = le32_to_cpu(ckpt->cur_node_segno[type - | |
3019 | CURSEG_HOT_NODE]); | |
3020 | blk_off = le16_to_cpu(ckpt->cur_node_blkoff[type - | |
3021 | CURSEG_HOT_NODE]); | |
119ee914 | 3022 | if (__exist_node_summaries(sbi)) |
351df4b2 JK |
3023 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_NODE_TYPE, |
3024 | type - CURSEG_HOT_NODE); | |
3025 | else | |
3026 | blk_addr = GET_SUM_BLOCK(sbi, segno); | |
3027 | } | |
3028 | ||
3029 | new = get_meta_page(sbi, blk_addr); | |
3030 | sum = (struct f2fs_summary_block *)page_address(new); | |
3031 | ||
3032 | if (IS_NODESEG(type)) { | |
119ee914 | 3033 | if (__exist_node_summaries(sbi)) { |
351df4b2 JK |
3034 | struct f2fs_summary *ns = &sum->entries[0]; |
3035 | int i; | |
3036 | for (i = 0; i < sbi->blocks_per_seg; i++, ns++) { | |
3037 | ns->version = 0; | |
3038 | ns->ofs_in_node = 0; | |
3039 | } | |
3040 | } else { | |
c376fc0f | 3041 | restore_node_summary(sbi, segno, sum); |
351df4b2 JK |
3042 | } |
3043 | } | |
3044 | ||
3045 | /* set uncompleted segment to curseg */ | |
3046 | curseg = CURSEG_I(sbi, type); | |
3047 | mutex_lock(&curseg->curseg_mutex); | |
b7ad7512 CY |
3048 | |
3049 | /* update journal info */ | |
3050 | down_write(&curseg->journal_rwsem); | |
3051 | memcpy(curseg->journal, &sum->journal, SUM_JOURNAL_SIZE); | |
3052 | up_write(&curseg->journal_rwsem); | |
3053 | ||
3054 | memcpy(curseg->sum_blk->entries, sum->entries, SUM_ENTRY_SIZE); | |
3055 | memcpy(&curseg->sum_blk->footer, &sum->footer, SUM_FOOTER_SIZE); | |
351df4b2 JK |
3056 | curseg->next_segno = segno; |
3057 | reset_curseg(sbi, type, 0); | |
3058 | curseg->alloc_type = ckpt->alloc_type[type]; | |
3059 | curseg->next_blkoff = blk_off; | |
3060 | mutex_unlock(&curseg->curseg_mutex); | |
3061 | f2fs_put_page(new, 1); | |
3062 | return 0; | |
3063 | } | |
3064 | ||
3065 | static int restore_curseg_summaries(struct f2fs_sb_info *sbi) | |
3066 | { | |
21d3f8e1 JQ |
3067 | struct f2fs_journal *sit_j = CURSEG_I(sbi, CURSEG_COLD_DATA)->journal; |
3068 | struct f2fs_journal *nat_j = CURSEG_I(sbi, CURSEG_HOT_DATA)->journal; | |
351df4b2 | 3069 | int type = CURSEG_HOT_DATA; |
e4fc5fbf | 3070 | int err; |
351df4b2 | 3071 | |
aaec2b1d | 3072 | if (is_set_ckpt_flags(sbi, CP_COMPACT_SUM_FLAG)) { |
3fa06d7b CY |
3073 | int npages = npages_for_summary_flush(sbi, true); |
3074 | ||
3075 | if (npages >= 2) | |
3076 | ra_meta_pages(sbi, start_sum_block(sbi), npages, | |
26879fb1 | 3077 | META_CP, true); |
3fa06d7b | 3078 | |
351df4b2 | 3079 | /* restore for compacted data summary */ |
c376fc0f | 3080 | read_compacted_summaries(sbi); |
351df4b2 JK |
3081 | type = CURSEG_HOT_NODE; |
3082 | } | |
3083 | ||
119ee914 | 3084 | if (__exist_node_summaries(sbi)) |
3fa06d7b | 3085 | ra_meta_pages(sbi, sum_blk_addr(sbi, NR_CURSEG_TYPE, type), |
26879fb1 | 3086 | NR_CURSEG_TYPE - type, META_CP, true); |
3fa06d7b | 3087 | |
e4fc5fbf CY |
3088 | for (; type <= CURSEG_COLD_NODE; type++) { |
3089 | err = read_normal_summaries(sbi, type); | |
3090 | if (err) | |
3091 | return err; | |
3092 | } | |
3093 | ||
21d3f8e1 JQ |
3094 | /* sanity check for summary blocks */ |
3095 | if (nats_in_cursum(nat_j) > NAT_JOURNAL_ENTRIES || | |
3096 | sits_in_cursum(sit_j) > SIT_JOURNAL_ENTRIES) | |
3097 | return -EINVAL; | |
3098 | ||
351df4b2 JK |
3099 | return 0; |
3100 | } | |
3101 | ||
3102 | static void write_compacted_summaries(struct f2fs_sb_info *sbi, block_t blkaddr) | |
3103 | { | |
3104 | struct page *page; | |
3105 | unsigned char *kaddr; | |
3106 | struct f2fs_summary *summary; | |
3107 | struct curseg_info *seg_i; | |
3108 | int written_size = 0; | |
3109 | int i, j; | |
3110 | ||
3111 | page = grab_meta_page(sbi, blkaddr++); | |
3112 | kaddr = (unsigned char *)page_address(page); | |
3113 | ||
3114 | /* Step 1: write nat cache */ | |
3115 | seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
b7ad7512 | 3116 | memcpy(kaddr, seg_i->journal, SUM_JOURNAL_SIZE); |
351df4b2 JK |
3117 | written_size += SUM_JOURNAL_SIZE; |
3118 | ||
3119 | /* Step 2: write sit cache */ | |
3120 | seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 3121 | memcpy(kaddr + written_size, seg_i->journal, SUM_JOURNAL_SIZE); |
351df4b2 JK |
3122 | written_size += SUM_JOURNAL_SIZE; |
3123 | ||
351df4b2 JK |
3124 | /* Step 3: write summary entries */ |
3125 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
3126 | unsigned short blkoff; | |
3127 | seg_i = CURSEG_I(sbi, i); | |
3128 | if (sbi->ckpt->alloc_type[i] == SSR) | |
3129 | blkoff = sbi->blocks_per_seg; | |
3130 | else | |
3131 | blkoff = curseg_blkoff(sbi, i); | |
3132 | ||
3133 | for (j = 0; j < blkoff; j++) { | |
3134 | if (!page) { | |
3135 | page = grab_meta_page(sbi, blkaddr++); | |
3136 | kaddr = (unsigned char *)page_address(page); | |
3137 | written_size = 0; | |
3138 | } | |
3139 | summary = (struct f2fs_summary *)(kaddr + written_size); | |
3140 | *summary = seg_i->sum_blk->entries[j]; | |
3141 | written_size += SUMMARY_SIZE; | |
351df4b2 | 3142 | |
09cbfeaf | 3143 | if (written_size + SUMMARY_SIZE <= PAGE_SIZE - |
351df4b2 JK |
3144 | SUM_FOOTER_SIZE) |
3145 | continue; | |
3146 | ||
e8d61a74 | 3147 | set_page_dirty(page); |
351df4b2 JK |
3148 | f2fs_put_page(page, 1); |
3149 | page = NULL; | |
3150 | } | |
3151 | } | |
e8d61a74 CY |
3152 | if (page) { |
3153 | set_page_dirty(page); | |
351df4b2 | 3154 | f2fs_put_page(page, 1); |
e8d61a74 | 3155 | } |
351df4b2 JK |
3156 | } |
3157 | ||
3158 | static void write_normal_summaries(struct f2fs_sb_info *sbi, | |
3159 | block_t blkaddr, int type) | |
3160 | { | |
3161 | int i, end; | |
3162 | if (IS_DATASEG(type)) | |
3163 | end = type + NR_CURSEG_DATA_TYPE; | |
3164 | else | |
3165 | end = type + NR_CURSEG_NODE_TYPE; | |
3166 | ||
b7ad7512 CY |
3167 | for (i = type; i < end; i++) |
3168 | write_current_sum_page(sbi, i, blkaddr + (i - type)); | |
351df4b2 JK |
3169 | } |
3170 | ||
3171 | void write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk) | |
3172 | { | |
aaec2b1d | 3173 | if (is_set_ckpt_flags(sbi, CP_COMPACT_SUM_FLAG)) |
351df4b2 JK |
3174 | write_compacted_summaries(sbi, start_blk); |
3175 | else | |
3176 | write_normal_summaries(sbi, start_blk, CURSEG_HOT_DATA); | |
3177 | } | |
3178 | ||
3179 | void write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk) | |
3180 | { | |
119ee914 | 3181 | write_normal_summaries(sbi, start_blk, CURSEG_HOT_NODE); |
351df4b2 JK |
3182 | } |
3183 | ||
dfc08a12 | 3184 | int lookup_journal_in_cursum(struct f2fs_journal *journal, int type, |
351df4b2 JK |
3185 | unsigned int val, int alloc) |
3186 | { | |
3187 | int i; | |
3188 | ||
3189 | if (type == NAT_JOURNAL) { | |
dfc08a12 CY |
3190 | for (i = 0; i < nats_in_cursum(journal); i++) { |
3191 | if (le32_to_cpu(nid_in_journal(journal, i)) == val) | |
351df4b2 JK |
3192 | return i; |
3193 | } | |
dfc08a12 CY |
3194 | if (alloc && __has_cursum_space(journal, 1, NAT_JOURNAL)) |
3195 | return update_nats_in_cursum(journal, 1); | |
351df4b2 | 3196 | } else if (type == SIT_JOURNAL) { |
dfc08a12 CY |
3197 | for (i = 0; i < sits_in_cursum(journal); i++) |
3198 | if (le32_to_cpu(segno_in_journal(journal, i)) == val) | |
351df4b2 | 3199 | return i; |
dfc08a12 CY |
3200 | if (alloc && __has_cursum_space(journal, 1, SIT_JOURNAL)) |
3201 | return update_sits_in_cursum(journal, 1); | |
351df4b2 JK |
3202 | } |
3203 | return -1; | |
3204 | } | |
3205 | ||
3206 | static struct page *get_current_sit_page(struct f2fs_sb_info *sbi, | |
3207 | unsigned int segno) | |
3208 | { | |
2cc22186 | 3209 | return get_meta_page(sbi, current_sit_addr(sbi, segno)); |
351df4b2 JK |
3210 | } |
3211 | ||
3212 | static struct page *get_next_sit_page(struct f2fs_sb_info *sbi, | |
3213 | unsigned int start) | |
3214 | { | |
3215 | struct sit_info *sit_i = SIT_I(sbi); | |
068c3cd8 | 3216 | struct page *page; |
351df4b2 | 3217 | pgoff_t src_off, dst_off; |
351df4b2 JK |
3218 | |
3219 | src_off = current_sit_addr(sbi, start); | |
3220 | dst_off = next_sit_addr(sbi, src_off); | |
3221 | ||
068c3cd8 YH |
3222 | page = grab_meta_page(sbi, dst_off); |
3223 | seg_info_to_sit_page(sbi, page, start); | |
351df4b2 | 3224 | |
068c3cd8 | 3225 | set_page_dirty(page); |
351df4b2 JK |
3226 | set_to_next_sit(sit_i, start); |
3227 | ||
068c3cd8 | 3228 | return page; |
351df4b2 JK |
3229 | } |
3230 | ||
184a5cd2 CY |
3231 | static struct sit_entry_set *grab_sit_entry_set(void) |
3232 | { | |
3233 | struct sit_entry_set *ses = | |
80c54505 | 3234 | f2fs_kmem_cache_alloc(sit_entry_set_slab, GFP_NOFS); |
184a5cd2 CY |
3235 | |
3236 | ses->entry_cnt = 0; | |
3237 | INIT_LIST_HEAD(&ses->set_list); | |
3238 | return ses; | |
3239 | } | |
3240 | ||
3241 | static void release_sit_entry_set(struct sit_entry_set *ses) | |
3242 | { | |
3243 | list_del(&ses->set_list); | |
3244 | kmem_cache_free(sit_entry_set_slab, ses); | |
3245 | } | |
3246 | ||
3247 | static void adjust_sit_entry_set(struct sit_entry_set *ses, | |
3248 | struct list_head *head) | |
3249 | { | |
3250 | struct sit_entry_set *next = ses; | |
3251 | ||
3252 | if (list_is_last(&ses->set_list, head)) | |
3253 | return; | |
3254 | ||
3255 | list_for_each_entry_continue(next, head, set_list) | |
3256 | if (ses->entry_cnt <= next->entry_cnt) | |
3257 | break; | |
3258 | ||
3259 | list_move_tail(&ses->set_list, &next->set_list); | |
3260 | } | |
3261 | ||
3262 | static void add_sit_entry(unsigned int segno, struct list_head *head) | |
3263 | { | |
3264 | struct sit_entry_set *ses; | |
3265 | unsigned int start_segno = START_SEGNO(segno); | |
3266 | ||
3267 | list_for_each_entry(ses, head, set_list) { | |
3268 | if (ses->start_segno == start_segno) { | |
3269 | ses->entry_cnt++; | |
3270 | adjust_sit_entry_set(ses, head); | |
3271 | return; | |
3272 | } | |
3273 | } | |
3274 | ||
3275 | ses = grab_sit_entry_set(); | |
3276 | ||
3277 | ses->start_segno = start_segno; | |
3278 | ses->entry_cnt++; | |
3279 | list_add(&ses->set_list, head); | |
3280 | } | |
3281 | ||
3282 | static void add_sits_in_set(struct f2fs_sb_info *sbi) | |
3283 | { | |
3284 | struct f2fs_sm_info *sm_info = SM_I(sbi); | |
3285 | struct list_head *set_list = &sm_info->sit_entry_set; | |
3286 | unsigned long *bitmap = SIT_I(sbi)->dirty_sentries_bitmap; | |
184a5cd2 CY |
3287 | unsigned int segno; |
3288 | ||
7cd8558b | 3289 | for_each_set_bit(segno, bitmap, MAIN_SEGS(sbi)) |
184a5cd2 CY |
3290 | add_sit_entry(segno, set_list); |
3291 | } | |
3292 | ||
3293 | static void remove_sits_in_journal(struct f2fs_sb_info *sbi) | |
351df4b2 JK |
3294 | { |
3295 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 3296 | struct f2fs_journal *journal = curseg->journal; |
351df4b2 JK |
3297 | int i; |
3298 | ||
b7ad7512 | 3299 | down_write(&curseg->journal_rwsem); |
dfc08a12 | 3300 | for (i = 0; i < sits_in_cursum(journal); i++) { |
184a5cd2 CY |
3301 | unsigned int segno; |
3302 | bool dirtied; | |
3303 | ||
dfc08a12 | 3304 | segno = le32_to_cpu(segno_in_journal(journal, i)); |
184a5cd2 CY |
3305 | dirtied = __mark_sit_entry_dirty(sbi, segno); |
3306 | ||
3307 | if (!dirtied) | |
3308 | add_sit_entry(segno, &SM_I(sbi)->sit_entry_set); | |
351df4b2 | 3309 | } |
dfc08a12 | 3310 | update_sits_in_cursum(journal, -i); |
b7ad7512 | 3311 | up_write(&curseg->journal_rwsem); |
351df4b2 JK |
3312 | } |
3313 | ||
0a8165d7 | 3314 | /* |
351df4b2 JK |
3315 | * CP calls this function, which flushes SIT entries including sit_journal, |
3316 | * and moves prefree segs to free segs. | |
3317 | */ | |
4b2fecc8 | 3318 | void flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
351df4b2 JK |
3319 | { |
3320 | struct sit_info *sit_i = SIT_I(sbi); | |
3321 | unsigned long *bitmap = sit_i->dirty_sentries_bitmap; | |
3322 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 3323 | struct f2fs_journal *journal = curseg->journal; |
184a5cd2 CY |
3324 | struct sit_entry_set *ses, *tmp; |
3325 | struct list_head *head = &SM_I(sbi)->sit_entry_set; | |
184a5cd2 | 3326 | bool to_journal = true; |
4b2fecc8 | 3327 | struct seg_entry *se; |
351df4b2 | 3328 | |
3d26fa6b | 3329 | down_write(&sit_i->sentry_lock); |
351df4b2 | 3330 | |
2b11a74b WL |
3331 | if (!sit_i->dirty_sentries) |
3332 | goto out; | |
3333 | ||
351df4b2 | 3334 | /* |
184a5cd2 CY |
3335 | * add and account sit entries of dirty bitmap in sit entry |
3336 | * set temporarily | |
351df4b2 | 3337 | */ |
184a5cd2 | 3338 | add_sits_in_set(sbi); |
351df4b2 | 3339 | |
184a5cd2 CY |
3340 | /* |
3341 | * if there are no enough space in journal to store dirty sit | |
3342 | * entries, remove all entries from journal and add and account | |
3343 | * them in sit entry set. | |
3344 | */ | |
dfc08a12 | 3345 | if (!__has_cursum_space(journal, sit_i->dirty_sentries, SIT_JOURNAL)) |
184a5cd2 | 3346 | remove_sits_in_journal(sbi); |
b2955550 | 3347 | |
184a5cd2 CY |
3348 | /* |
3349 | * there are two steps to flush sit entries: | |
3350 | * #1, flush sit entries to journal in current cold data summary block. | |
3351 | * #2, flush sit entries to sit page. | |
3352 | */ | |
3353 | list_for_each_entry_safe(ses, tmp, head, set_list) { | |
4a257ed6 | 3354 | struct page *page = NULL; |
184a5cd2 CY |
3355 | struct f2fs_sit_block *raw_sit = NULL; |
3356 | unsigned int start_segno = ses->start_segno; | |
3357 | unsigned int end = min(start_segno + SIT_ENTRY_PER_BLOCK, | |
7cd8558b | 3358 | (unsigned long)MAIN_SEGS(sbi)); |
184a5cd2 CY |
3359 | unsigned int segno = start_segno; |
3360 | ||
3361 | if (to_journal && | |
dfc08a12 | 3362 | !__has_cursum_space(journal, ses->entry_cnt, SIT_JOURNAL)) |
184a5cd2 CY |
3363 | to_journal = false; |
3364 | ||
b7ad7512 CY |
3365 | if (to_journal) { |
3366 | down_write(&curseg->journal_rwsem); | |
3367 | } else { | |
184a5cd2 CY |
3368 | page = get_next_sit_page(sbi, start_segno); |
3369 | raw_sit = page_address(page); | |
351df4b2 | 3370 | } |
351df4b2 | 3371 | |
184a5cd2 CY |
3372 | /* flush dirty sit entries in region of current sit set */ |
3373 | for_each_set_bit_from(segno, bitmap, end) { | |
3374 | int offset, sit_offset; | |
4b2fecc8 JK |
3375 | |
3376 | se = get_seg_entry(sbi, segno); | |
184a5cd2 CY |
3377 | |
3378 | /* add discard candidates */ | |
c473f1a9 | 3379 | if (!(cpc->reason & CP_DISCARD)) { |
4b2fecc8 | 3380 | cpc->trim_start = segno; |
25290fa5 | 3381 | add_discard_addrs(sbi, cpc, false); |
4b2fecc8 | 3382 | } |
184a5cd2 CY |
3383 | |
3384 | if (to_journal) { | |
dfc08a12 | 3385 | offset = lookup_journal_in_cursum(journal, |
184a5cd2 CY |
3386 | SIT_JOURNAL, segno, 1); |
3387 | f2fs_bug_on(sbi, offset < 0); | |
dfc08a12 | 3388 | segno_in_journal(journal, offset) = |
184a5cd2 CY |
3389 | cpu_to_le32(segno); |
3390 | seg_info_to_raw_sit(se, | |
dfc08a12 | 3391 | &sit_in_journal(journal, offset)); |
184a5cd2 CY |
3392 | } else { |
3393 | sit_offset = SIT_ENTRY_OFFSET(sit_i, segno); | |
3394 | seg_info_to_raw_sit(se, | |
3395 | &raw_sit->entries[sit_offset]); | |
3396 | } | |
351df4b2 | 3397 | |
184a5cd2 CY |
3398 | __clear_bit(segno, bitmap); |
3399 | sit_i->dirty_sentries--; | |
3400 | ses->entry_cnt--; | |
351df4b2 JK |
3401 | } |
3402 | ||
b7ad7512 CY |
3403 | if (to_journal) |
3404 | up_write(&curseg->journal_rwsem); | |
3405 | else | |
184a5cd2 CY |
3406 | f2fs_put_page(page, 1); |
3407 | ||
3408 | f2fs_bug_on(sbi, ses->entry_cnt); | |
3409 | release_sit_entry_set(ses); | |
351df4b2 | 3410 | } |
184a5cd2 CY |
3411 | |
3412 | f2fs_bug_on(sbi, !list_empty(head)); | |
3413 | f2fs_bug_on(sbi, sit_i->dirty_sentries); | |
184a5cd2 | 3414 | out: |
c473f1a9 | 3415 | if (cpc->reason & CP_DISCARD) { |
650d3c4e YH |
3416 | __u64 trim_start = cpc->trim_start; |
3417 | ||
4b2fecc8 | 3418 | for (; cpc->trim_start <= cpc->trim_end; cpc->trim_start++) |
25290fa5 | 3419 | add_discard_addrs(sbi, cpc, false); |
650d3c4e YH |
3420 | |
3421 | cpc->trim_start = trim_start; | |
4b2fecc8 | 3422 | } |
3d26fa6b | 3423 | up_write(&sit_i->sentry_lock); |
351df4b2 | 3424 | |
351df4b2 JK |
3425 | set_prefree_as_free_segments(sbi); |
3426 | } | |
3427 | ||
3428 | static int build_sit_info(struct f2fs_sb_info *sbi) | |
3429 | { | |
3430 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); | |
351df4b2 JK |
3431 | struct sit_info *sit_i; |
3432 | unsigned int sit_segs, start; | |
ae27d62e | 3433 | char *src_bitmap; |
351df4b2 JK |
3434 | unsigned int bitmap_size; |
3435 | ||
3436 | /* allocate memory for SIT information */ | |
acbf054d | 3437 | sit_i = f2fs_kzalloc(sbi, sizeof(struct sit_info), GFP_KERNEL); |
351df4b2 JK |
3438 | if (!sit_i) |
3439 | return -ENOMEM; | |
3440 | ||
3441 | SM_I(sbi)->sit_info = sit_i; | |
3442 | ||
628b3d14 | 3443 | sit_i->sentries = f2fs_kvzalloc(sbi, MAIN_SEGS(sbi) * |
39307a8e | 3444 | sizeof(struct seg_entry), GFP_KERNEL); |
351df4b2 JK |
3445 | if (!sit_i->sentries) |
3446 | return -ENOMEM; | |
3447 | ||
7cd8558b | 3448 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
628b3d14 CY |
3449 | sit_i->dirty_sentries_bitmap = f2fs_kvzalloc(sbi, bitmap_size, |
3450 | GFP_KERNEL); | |
351df4b2 JK |
3451 | if (!sit_i->dirty_sentries_bitmap) |
3452 | return -ENOMEM; | |
3453 | ||
7cd8558b | 3454 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
351df4b2 | 3455 | sit_i->sentries[start].cur_valid_map |
acbf054d | 3456 | = f2fs_kzalloc(sbi, SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); |
351df4b2 | 3457 | sit_i->sentries[start].ckpt_valid_map |
acbf054d | 3458 | = f2fs_kzalloc(sbi, SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); |
a66cdd98 | 3459 | if (!sit_i->sentries[start].cur_valid_map || |
3e025740 | 3460 | !sit_i->sentries[start].ckpt_valid_map) |
351df4b2 | 3461 | return -ENOMEM; |
3e025740 | 3462 | |
355e7891 CY |
3463 | #ifdef CONFIG_F2FS_CHECK_FS |
3464 | sit_i->sentries[start].cur_valid_map_mir | |
acbf054d | 3465 | = f2fs_kzalloc(sbi, SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); |
355e7891 CY |
3466 | if (!sit_i->sentries[start].cur_valid_map_mir) |
3467 | return -ENOMEM; | |
3468 | #endif | |
3469 | ||
3e025740 JK |
3470 | if (f2fs_discard_en(sbi)) { |
3471 | sit_i->sentries[start].discard_map | |
acbf054d CY |
3472 | = f2fs_kzalloc(sbi, SIT_VBLOCK_MAP_SIZE, |
3473 | GFP_KERNEL); | |
3e025740 JK |
3474 | if (!sit_i->sentries[start].discard_map) |
3475 | return -ENOMEM; | |
3476 | } | |
351df4b2 JK |
3477 | } |
3478 | ||
acbf054d | 3479 | sit_i->tmp_map = f2fs_kzalloc(sbi, SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); |
60a3b782 JK |
3480 | if (!sit_i->tmp_map) |
3481 | return -ENOMEM; | |
3482 | ||
351df4b2 | 3483 | if (sbi->segs_per_sec > 1) { |
628b3d14 | 3484 | sit_i->sec_entries = f2fs_kvzalloc(sbi, MAIN_SECS(sbi) * |
39307a8e | 3485 | sizeof(struct sec_entry), GFP_KERNEL); |
351df4b2 JK |
3486 | if (!sit_i->sec_entries) |
3487 | return -ENOMEM; | |
3488 | } | |
3489 | ||
3490 | /* get information related with SIT */ | |
3491 | sit_segs = le32_to_cpu(raw_super->segment_count_sit) >> 1; | |
3492 | ||
3493 | /* setup SIT bitmap from ckeckpoint pack */ | |
3494 | bitmap_size = __bitmap_size(sbi, SIT_BITMAP); | |
3495 | src_bitmap = __bitmap_ptr(sbi, SIT_BITMAP); | |
3496 | ||
ae27d62e CY |
3497 | sit_i->sit_bitmap = kmemdup(src_bitmap, bitmap_size, GFP_KERNEL); |
3498 | if (!sit_i->sit_bitmap) | |
351df4b2 | 3499 | return -ENOMEM; |
351df4b2 | 3500 | |
ae27d62e CY |
3501 | #ifdef CONFIG_F2FS_CHECK_FS |
3502 | sit_i->sit_bitmap_mir = kmemdup(src_bitmap, bitmap_size, GFP_KERNEL); | |
3503 | if (!sit_i->sit_bitmap_mir) | |
3504 | return -ENOMEM; | |
3505 | #endif | |
3506 | ||
351df4b2 JK |
3507 | /* init SIT information */ |
3508 | sit_i->s_ops = &default_salloc_ops; | |
3509 | ||
3510 | sit_i->sit_base_addr = le32_to_cpu(raw_super->sit_blkaddr); | |
3511 | sit_i->sit_blocks = sit_segs << sbi->log_blocks_per_seg; | |
c79b7ff1 | 3512 | sit_i->written_valid_blocks = 0; |
351df4b2 JK |
3513 | sit_i->bitmap_size = bitmap_size; |
3514 | sit_i->dirty_sentries = 0; | |
3515 | sit_i->sents_per_block = SIT_ENTRY_PER_BLOCK; | |
3516 | sit_i->elapsed_time = le64_to_cpu(sbi->ckpt->elapsed_time); | |
48fbfe50 | 3517 | sit_i->mounted_time = ktime_get_real_seconds(); |
3d26fa6b | 3518 | init_rwsem(&sit_i->sentry_lock); |
351df4b2 JK |
3519 | return 0; |
3520 | } | |
3521 | ||
3522 | static int build_free_segmap(struct f2fs_sb_info *sbi) | |
3523 | { | |
351df4b2 JK |
3524 | struct free_segmap_info *free_i; |
3525 | unsigned int bitmap_size, sec_bitmap_size; | |
3526 | ||
3527 | /* allocate memory for free segmap information */ | |
acbf054d | 3528 | free_i = f2fs_kzalloc(sbi, sizeof(struct free_segmap_info), GFP_KERNEL); |
351df4b2 JK |
3529 | if (!free_i) |
3530 | return -ENOMEM; | |
3531 | ||
3532 | SM_I(sbi)->free_info = free_i; | |
3533 | ||
7cd8558b | 3534 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
628b3d14 | 3535 | free_i->free_segmap = f2fs_kvmalloc(sbi, bitmap_size, GFP_KERNEL); |
351df4b2 JK |
3536 | if (!free_i->free_segmap) |
3537 | return -ENOMEM; | |
3538 | ||
7cd8558b | 3539 | sec_bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi)); |
628b3d14 | 3540 | free_i->free_secmap = f2fs_kvmalloc(sbi, sec_bitmap_size, GFP_KERNEL); |
351df4b2 JK |
3541 | if (!free_i->free_secmap) |
3542 | return -ENOMEM; | |
3543 | ||
3544 | /* set all segments as dirty temporarily */ | |
3545 | memset(free_i->free_segmap, 0xff, bitmap_size); | |
3546 | memset(free_i->free_secmap, 0xff, sec_bitmap_size); | |
3547 | ||
3548 | /* init free segmap information */ | |
7cd8558b | 3549 | free_i->start_segno = GET_SEGNO_FROM_SEG0(sbi, MAIN_BLKADDR(sbi)); |
351df4b2 JK |
3550 | free_i->free_segments = 0; |
3551 | free_i->free_sections = 0; | |
1a118ccf | 3552 | spin_lock_init(&free_i->segmap_lock); |
351df4b2 JK |
3553 | return 0; |
3554 | } | |
3555 | ||
3556 | static int build_curseg(struct f2fs_sb_info *sbi) | |
3557 | { | |
1042d60f | 3558 | struct curseg_info *array; |
351df4b2 JK |
3559 | int i; |
3560 | ||
4e6aad29 | 3561 | array = f2fs_kzalloc(sbi, sizeof(*array) * NR_CURSEG_TYPE, GFP_KERNEL); |
351df4b2 JK |
3562 | if (!array) |
3563 | return -ENOMEM; | |
3564 | ||
3565 | SM_I(sbi)->curseg_array = array; | |
3566 | ||
3567 | for (i = 0; i < NR_CURSEG_TYPE; i++) { | |
3568 | mutex_init(&array[i].curseg_mutex); | |
acbf054d | 3569 | array[i].sum_blk = f2fs_kzalloc(sbi, PAGE_SIZE, GFP_KERNEL); |
351df4b2 JK |
3570 | if (!array[i].sum_blk) |
3571 | return -ENOMEM; | |
b7ad7512 | 3572 | init_rwsem(&array[i].journal_rwsem); |
acbf054d CY |
3573 | array[i].journal = f2fs_kzalloc(sbi, |
3574 | sizeof(struct f2fs_journal), GFP_KERNEL); | |
b7ad7512 CY |
3575 | if (!array[i].journal) |
3576 | return -ENOMEM; | |
351df4b2 JK |
3577 | array[i].segno = NULL_SEGNO; |
3578 | array[i].next_blkoff = 0; | |
3579 | } | |
3580 | return restore_curseg_summaries(sbi); | |
3581 | } | |
3582 | ||
c39a1b34 | 3583 | static int build_sit_entries(struct f2fs_sb_info *sbi) |
351df4b2 JK |
3584 | { |
3585 | struct sit_info *sit_i = SIT_I(sbi); | |
3586 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 3587 | struct f2fs_journal *journal = curseg->journal; |
9c094040 YH |
3588 | struct seg_entry *se; |
3589 | struct f2fs_sit_entry sit; | |
74de593a CY |
3590 | int sit_blk_cnt = SIT_BLK_CNT(sbi); |
3591 | unsigned int i, start, end; | |
3592 | unsigned int readed, start_blk = 0; | |
c39a1b34 | 3593 | int err = 0; |
351df4b2 | 3594 | |
74de593a | 3595 | do { |
664ba972 JK |
3596 | readed = ra_meta_pages(sbi, start_blk, BIO_MAX_PAGES, |
3597 | META_SIT, true); | |
74de593a CY |
3598 | |
3599 | start = start_blk * sit_i->sents_per_block; | |
3600 | end = (start_blk + readed) * sit_i->sents_per_block; | |
3601 | ||
7cd8558b | 3602 | for (; start < end && start < MAIN_SEGS(sbi); start++) { |
74de593a | 3603 | struct f2fs_sit_block *sit_blk; |
74de593a CY |
3604 | struct page *page; |
3605 | ||
9c094040 | 3606 | se = &sit_i->sentries[start]; |
74de593a CY |
3607 | page = get_current_sit_page(sbi, start); |
3608 | sit_blk = (struct f2fs_sit_block *)page_address(page); | |
3609 | sit = sit_blk->entries[SIT_ENTRY_OFFSET(sit_i, start)]; | |
3610 | f2fs_put_page(page, 1); | |
d600af23 | 3611 | |
c39a1b34 JK |
3612 | err = check_block_count(sbi, start, &sit); |
3613 | if (err) | |
3614 | return err; | |
74de593a | 3615 | seg_info_from_raw_sit(se, &sit); |
a66cdd98 JK |
3616 | |
3617 | /* build discard map only one time */ | |
3e025740 | 3618 | if (f2fs_discard_en(sbi)) { |
1f43e2ad CY |
3619 | if (is_set_ckpt_flags(sbi, CP_TRIMMED_FLAG)) { |
3620 | memset(se->discard_map, 0xff, | |
3621 | SIT_VBLOCK_MAP_SIZE); | |
3622 | } else { | |
3623 | memcpy(se->discard_map, | |
3624 | se->cur_valid_map, | |
3625 | SIT_VBLOCK_MAP_SIZE); | |
3626 | sbi->discard_blks += | |
3627 | sbi->blocks_per_seg - | |
3628 | se->valid_blocks; | |
3629 | } | |
3e025740 | 3630 | } |
a66cdd98 | 3631 | |
d600af23 CY |
3632 | if (sbi->segs_per_sec > 1) |
3633 | get_sec_entry(sbi, start)->valid_blocks += | |
3634 | se->valid_blocks; | |
351df4b2 | 3635 | } |
74de593a CY |
3636 | start_blk += readed; |
3637 | } while (start_blk < sit_blk_cnt); | |
d600af23 CY |
3638 | |
3639 | down_read(&curseg->journal_rwsem); | |
3640 | for (i = 0; i < sits_in_cursum(journal); i++) { | |
d600af23 CY |
3641 | unsigned int old_valid_blocks; |
3642 | ||
3643 | start = le32_to_cpu(segno_in_journal(journal, i)); | |
3644 | se = &sit_i->sentries[start]; | |
3645 | sit = sit_in_journal(journal, i); | |
3646 | ||
3647 | old_valid_blocks = se->valid_blocks; | |
3648 | ||
c39a1b34 JK |
3649 | err = check_block_count(sbi, start, &sit); |
3650 | if (err) | |
3651 | break; | |
d600af23 CY |
3652 | seg_info_from_raw_sit(se, &sit); |
3653 | ||
3654 | if (f2fs_discard_en(sbi)) { | |
1f43e2ad CY |
3655 | if (is_set_ckpt_flags(sbi, CP_TRIMMED_FLAG)) { |
3656 | memset(se->discard_map, 0xff, | |
3657 | SIT_VBLOCK_MAP_SIZE); | |
3658 | } else { | |
3659 | memcpy(se->discard_map, se->cur_valid_map, | |
3660 | SIT_VBLOCK_MAP_SIZE); | |
3661 | sbi->discard_blks += old_valid_blocks - | |
3662 | se->valid_blocks; | |
3663 | } | |
d600af23 CY |
3664 | } |
3665 | ||
3666 | if (sbi->segs_per_sec > 1) | |
3667 | get_sec_entry(sbi, start)->valid_blocks += | |
3668 | se->valid_blocks - old_valid_blocks; | |
3669 | } | |
3670 | up_read(&curseg->journal_rwsem); | |
c39a1b34 | 3671 | return err; |
351df4b2 JK |
3672 | } |
3673 | ||
3674 | static void init_free_segmap(struct f2fs_sb_info *sbi) | |
3675 | { | |
3676 | unsigned int start; | |
3677 | int type; | |
3678 | ||
7cd8558b | 3679 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
351df4b2 JK |
3680 | struct seg_entry *sentry = get_seg_entry(sbi, start); |
3681 | if (!sentry->valid_blocks) | |
3682 | __set_free(sbi, start); | |
c79b7ff1 JK |
3683 | else |
3684 | SIT_I(sbi)->written_valid_blocks += | |
3685 | sentry->valid_blocks; | |
351df4b2 JK |
3686 | } |
3687 | ||
3688 | /* set use the current segments */ | |
3689 | for (type = CURSEG_HOT_DATA; type <= CURSEG_COLD_NODE; type++) { | |
3690 | struct curseg_info *curseg_t = CURSEG_I(sbi, type); | |
3691 | __set_test_and_inuse(sbi, curseg_t->segno); | |
3692 | } | |
3693 | } | |
3694 | ||
3695 | static void init_dirty_segmap(struct f2fs_sb_info *sbi) | |
3696 | { | |
3697 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
3698 | struct free_segmap_info *free_i = FREE_I(sbi); | |
7cd8558b | 3699 | unsigned int segno = 0, offset = 0; |
351df4b2 JK |
3700 | unsigned short valid_blocks; |
3701 | ||
8736fbf0 | 3702 | while (1) { |
351df4b2 | 3703 | /* find dirty segment based on free segmap */ |
7cd8558b JK |
3704 | segno = find_next_inuse(free_i, MAIN_SEGS(sbi), offset); |
3705 | if (segno >= MAIN_SEGS(sbi)) | |
351df4b2 JK |
3706 | break; |
3707 | offset = segno + 1; | |
302bd348 | 3708 | valid_blocks = get_valid_blocks(sbi, segno, false); |
ec325b52 | 3709 | if (valid_blocks == sbi->blocks_per_seg || !valid_blocks) |
351df4b2 | 3710 | continue; |
ec325b52 JK |
3711 | if (valid_blocks > sbi->blocks_per_seg) { |
3712 | f2fs_bug_on(sbi, 1); | |
3713 | continue; | |
3714 | } | |
351df4b2 JK |
3715 | mutex_lock(&dirty_i->seglist_lock); |
3716 | __locate_dirty_segment(sbi, segno, DIRTY); | |
3717 | mutex_unlock(&dirty_i->seglist_lock); | |
3718 | } | |
3719 | } | |
3720 | ||
5ec4e49f | 3721 | static int init_victim_secmap(struct f2fs_sb_info *sbi) |
351df4b2 JK |
3722 | { |
3723 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
7cd8558b | 3724 | unsigned int bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi)); |
351df4b2 | 3725 | |
628b3d14 | 3726 | dirty_i->victim_secmap = f2fs_kvzalloc(sbi, bitmap_size, GFP_KERNEL); |
5ec4e49f | 3727 | if (!dirty_i->victim_secmap) |
351df4b2 JK |
3728 | return -ENOMEM; |
3729 | return 0; | |
3730 | } | |
3731 | ||
3732 | static int build_dirty_segmap(struct f2fs_sb_info *sbi) | |
3733 | { | |
3734 | struct dirty_seglist_info *dirty_i; | |
3735 | unsigned int bitmap_size, i; | |
3736 | ||
3737 | /* allocate memory for dirty segments list information */ | |
acbf054d CY |
3738 | dirty_i = f2fs_kzalloc(sbi, sizeof(struct dirty_seglist_info), |
3739 | GFP_KERNEL); | |
351df4b2 JK |
3740 | if (!dirty_i) |
3741 | return -ENOMEM; | |
3742 | ||
3743 | SM_I(sbi)->dirty_info = dirty_i; | |
3744 | mutex_init(&dirty_i->seglist_lock); | |
3745 | ||
7cd8558b | 3746 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
351df4b2 JK |
3747 | |
3748 | for (i = 0; i < NR_DIRTY_TYPE; i++) { | |
628b3d14 CY |
3749 | dirty_i->dirty_segmap[i] = f2fs_kvzalloc(sbi, bitmap_size, |
3750 | GFP_KERNEL); | |
351df4b2 JK |
3751 | if (!dirty_i->dirty_segmap[i]) |
3752 | return -ENOMEM; | |
3753 | } | |
3754 | ||
3755 | init_dirty_segmap(sbi); | |
5ec4e49f | 3756 | return init_victim_secmap(sbi); |
351df4b2 JK |
3757 | } |
3758 | ||
0a8165d7 | 3759 | /* |
351df4b2 JK |
3760 | * Update min, max modified time for cost-benefit GC algorithm |
3761 | */ | |
3762 | static void init_min_max_mtime(struct f2fs_sb_info *sbi) | |
3763 | { | |
3764 | struct sit_info *sit_i = SIT_I(sbi); | |
3765 | unsigned int segno; | |
3766 | ||
3d26fa6b | 3767 | down_write(&sit_i->sentry_lock); |
351df4b2 JK |
3768 | |
3769 | sit_i->min_mtime = LLONG_MAX; | |
3770 | ||
7cd8558b | 3771 | for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) { |
351df4b2 JK |
3772 | unsigned int i; |
3773 | unsigned long long mtime = 0; | |
3774 | ||
3775 | for (i = 0; i < sbi->segs_per_sec; i++) | |
3776 | mtime += get_seg_entry(sbi, segno + i)->mtime; | |
3777 | ||
3778 | mtime = div_u64(mtime, sbi->segs_per_sec); | |
3779 | ||
3780 | if (sit_i->min_mtime > mtime) | |
3781 | sit_i->min_mtime = mtime; | |
3782 | } | |
3783 | sit_i->max_mtime = get_mtime(sbi); | |
3d26fa6b | 3784 | up_write(&sit_i->sentry_lock); |
351df4b2 JK |
3785 | } |
3786 | ||
3787 | int build_segment_manager(struct f2fs_sb_info *sbi) | |
3788 | { | |
3789 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); | |
3790 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1042d60f | 3791 | struct f2fs_sm_info *sm_info; |
351df4b2 JK |
3792 | int err; |
3793 | ||
acbf054d | 3794 | sm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_sm_info), GFP_KERNEL); |
351df4b2 JK |
3795 | if (!sm_info) |
3796 | return -ENOMEM; | |
3797 | ||
3798 | /* init sm info */ | |
3799 | sbi->sm_info = sm_info; | |
351df4b2 JK |
3800 | sm_info->seg0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); |
3801 | sm_info->main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); | |
3802 | sm_info->segment_count = le32_to_cpu(raw_super->segment_count); | |
3803 | sm_info->reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count); | |
3804 | sm_info->ovp_segments = le32_to_cpu(ckpt->overprov_segment_count); | |
3805 | sm_info->main_segments = le32_to_cpu(raw_super->segment_count_main); | |
3806 | sm_info->ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); | |
58c41035 JK |
3807 | sm_info->rec_prefree_segments = sm_info->main_segments * |
3808 | DEF_RECLAIM_PREFREE_SEGMENTS / 100; | |
44a83499 JK |
3809 | if (sm_info->rec_prefree_segments > DEF_MAX_RECLAIM_PREFREE_SEGMENTS) |
3810 | sm_info->rec_prefree_segments = DEF_MAX_RECLAIM_PREFREE_SEGMENTS; | |
3811 | ||
52763a4b JK |
3812 | if (!test_opt(sbi, LFS)) |
3813 | sm_info->ipu_policy = 1 << F2FS_IPU_FSYNC; | |
216fbd64 | 3814 | sm_info->min_ipu_util = DEF_MIN_IPU_UTIL; |
c1ce1b02 | 3815 | sm_info->min_fsync_blocks = DEF_MIN_FSYNC_BLOCKS; |
ef095d19 | 3816 | sm_info->min_hot_blocks = DEF_MIN_HOT_BLOCKS; |
a2a12b67 | 3817 | sm_info->min_ssr_sections = reserved_sections(sbi); |
351df4b2 | 3818 | |
bba681cb JK |
3819 | sm_info->trim_sections = DEF_BATCHED_TRIM_SECTIONS; |
3820 | ||
184a5cd2 CY |
3821 | INIT_LIST_HEAD(&sm_info->sit_entry_set); |
3822 | ||
2b60311d CY |
3823 | init_rwsem(&sm_info->curseg_lock); |
3824 | ||
d4fdf8ba | 3825 | if (!f2fs_readonly(sbi->sb)) { |
2163d198 GZ |
3826 | err = create_flush_cmd_control(sbi); |
3827 | if (err) | |
a688b9d9 | 3828 | return err; |
6b4afdd7 JK |
3829 | } |
3830 | ||
0b54fb84 JK |
3831 | err = create_discard_cmd_control(sbi); |
3832 | if (err) | |
3833 | return err; | |
3834 | ||
351df4b2 JK |
3835 | err = build_sit_info(sbi); |
3836 | if (err) | |
3837 | return err; | |
3838 | err = build_free_segmap(sbi); | |
3839 | if (err) | |
3840 | return err; | |
3841 | err = build_curseg(sbi); | |
3842 | if (err) | |
3843 | return err; | |
3844 | ||
3845 | /* reinit free segmap based on SIT */ | |
c39a1b34 JK |
3846 | err = build_sit_entries(sbi); |
3847 | if (err) | |
3848 | return err; | |
351df4b2 JK |
3849 | |
3850 | init_free_segmap(sbi); | |
3851 | err = build_dirty_segmap(sbi); | |
3852 | if (err) | |
3853 | return err; | |
3854 | ||
3855 | init_min_max_mtime(sbi); | |
3856 | return 0; | |
3857 | } | |
3858 | ||
3859 | static void discard_dirty_segmap(struct f2fs_sb_info *sbi, | |
3860 | enum dirty_type dirty_type) | |
3861 | { | |
3862 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
3863 | ||
3864 | mutex_lock(&dirty_i->seglist_lock); | |
39307a8e | 3865 | kvfree(dirty_i->dirty_segmap[dirty_type]); |
351df4b2 JK |
3866 | dirty_i->nr_dirty[dirty_type] = 0; |
3867 | mutex_unlock(&dirty_i->seglist_lock); | |
3868 | } | |
3869 | ||
5ec4e49f | 3870 | static void destroy_victim_secmap(struct f2fs_sb_info *sbi) |
351df4b2 JK |
3871 | { |
3872 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
39307a8e | 3873 | kvfree(dirty_i->victim_secmap); |
351df4b2 JK |
3874 | } |
3875 | ||
3876 | static void destroy_dirty_segmap(struct f2fs_sb_info *sbi) | |
3877 | { | |
3878 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
3879 | int i; | |
3880 | ||
3881 | if (!dirty_i) | |
3882 | return; | |
3883 | ||
3884 | /* discard pre-free/dirty segments list */ | |
3885 | for (i = 0; i < NR_DIRTY_TYPE; i++) | |
3886 | discard_dirty_segmap(sbi, i); | |
3887 | ||
5ec4e49f | 3888 | destroy_victim_secmap(sbi); |
351df4b2 JK |
3889 | SM_I(sbi)->dirty_info = NULL; |
3890 | kfree(dirty_i); | |
3891 | } | |
3892 | ||
3893 | static void destroy_curseg(struct f2fs_sb_info *sbi) | |
3894 | { | |
3895 | struct curseg_info *array = SM_I(sbi)->curseg_array; | |
3896 | int i; | |
3897 | ||
3898 | if (!array) | |
3899 | return; | |
3900 | SM_I(sbi)->curseg_array = NULL; | |
b7ad7512 | 3901 | for (i = 0; i < NR_CURSEG_TYPE; i++) { |
351df4b2 | 3902 | kfree(array[i].sum_blk); |
b7ad7512 CY |
3903 | kfree(array[i].journal); |
3904 | } | |
351df4b2 JK |
3905 | kfree(array); |
3906 | } | |
3907 | ||
3908 | static void destroy_free_segmap(struct f2fs_sb_info *sbi) | |
3909 | { | |
3910 | struct free_segmap_info *free_i = SM_I(sbi)->free_info; | |
3911 | if (!free_i) | |
3912 | return; | |
3913 | SM_I(sbi)->free_info = NULL; | |
39307a8e JK |
3914 | kvfree(free_i->free_segmap); |
3915 | kvfree(free_i->free_secmap); | |
351df4b2 JK |
3916 | kfree(free_i); |
3917 | } | |
3918 | ||
3919 | static void destroy_sit_info(struct f2fs_sb_info *sbi) | |
3920 | { | |
3921 | struct sit_info *sit_i = SIT_I(sbi); | |
3922 | unsigned int start; | |
3923 | ||
3924 | if (!sit_i) | |
3925 | return; | |
3926 | ||
3927 | if (sit_i->sentries) { | |
7cd8558b | 3928 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
351df4b2 | 3929 | kfree(sit_i->sentries[start].cur_valid_map); |
355e7891 CY |
3930 | #ifdef CONFIG_F2FS_CHECK_FS |
3931 | kfree(sit_i->sentries[start].cur_valid_map_mir); | |
3932 | #endif | |
351df4b2 | 3933 | kfree(sit_i->sentries[start].ckpt_valid_map); |
a66cdd98 | 3934 | kfree(sit_i->sentries[start].discard_map); |
351df4b2 JK |
3935 | } |
3936 | } | |
60a3b782 JK |
3937 | kfree(sit_i->tmp_map); |
3938 | ||
39307a8e JK |
3939 | kvfree(sit_i->sentries); |
3940 | kvfree(sit_i->sec_entries); | |
3941 | kvfree(sit_i->dirty_sentries_bitmap); | |
351df4b2 JK |
3942 | |
3943 | SM_I(sbi)->sit_info = NULL; | |
3944 | kfree(sit_i->sit_bitmap); | |
ae27d62e CY |
3945 | #ifdef CONFIG_F2FS_CHECK_FS |
3946 | kfree(sit_i->sit_bitmap_mir); | |
3947 | #endif | |
351df4b2 JK |
3948 | kfree(sit_i); |
3949 | } | |
3950 | ||
3951 | void destroy_segment_manager(struct f2fs_sb_info *sbi) | |
3952 | { | |
3953 | struct f2fs_sm_info *sm_info = SM_I(sbi); | |
a688b9d9 | 3954 | |
3b03f724 CY |
3955 | if (!sm_info) |
3956 | return; | |
5eba8c5d | 3957 | destroy_flush_cmd_control(sbi, true); |
f099405f | 3958 | destroy_discard_cmd_control(sbi); |
351df4b2 JK |
3959 | destroy_dirty_segmap(sbi); |
3960 | destroy_curseg(sbi); | |
3961 | destroy_free_segmap(sbi); | |
3962 | destroy_sit_info(sbi); | |
3963 | sbi->sm_info = NULL; | |
3964 | kfree(sm_info); | |
3965 | } | |
7fd9e544 JK |
3966 | |
3967 | int __init create_segment_manager_caches(void) | |
3968 | { | |
3969 | discard_entry_slab = f2fs_kmem_cache_create("discard_entry", | |
e8512d2e | 3970 | sizeof(struct discard_entry)); |
7fd9e544 | 3971 | if (!discard_entry_slab) |
184a5cd2 CY |
3972 | goto fail; |
3973 | ||
b01a9201 JK |
3974 | discard_cmd_slab = f2fs_kmem_cache_create("discard_cmd", |
3975 | sizeof(struct discard_cmd)); | |
3976 | if (!discard_cmd_slab) | |
6ab2a308 | 3977 | goto destroy_discard_entry; |
275b66b0 | 3978 | |
184a5cd2 | 3979 | sit_entry_set_slab = f2fs_kmem_cache_create("sit_entry_set", |
c9ee0085 | 3980 | sizeof(struct sit_entry_set)); |
184a5cd2 | 3981 | if (!sit_entry_set_slab) |
b01a9201 | 3982 | goto destroy_discard_cmd; |
88b88a66 JK |
3983 | |
3984 | inmem_entry_slab = f2fs_kmem_cache_create("inmem_page_entry", | |
3985 | sizeof(struct inmem_pages)); | |
3986 | if (!inmem_entry_slab) | |
3987 | goto destroy_sit_entry_set; | |
7fd9e544 | 3988 | return 0; |
184a5cd2 | 3989 | |
88b88a66 JK |
3990 | destroy_sit_entry_set: |
3991 | kmem_cache_destroy(sit_entry_set_slab); | |
b01a9201 JK |
3992 | destroy_discard_cmd: |
3993 | kmem_cache_destroy(discard_cmd_slab); | |
6ab2a308 | 3994 | destroy_discard_entry: |
184a5cd2 CY |
3995 | kmem_cache_destroy(discard_entry_slab); |
3996 | fail: | |
3997 | return -ENOMEM; | |
7fd9e544 JK |
3998 | } |
3999 | ||
4000 | void destroy_segment_manager_caches(void) | |
4001 | { | |
184a5cd2 | 4002 | kmem_cache_destroy(sit_entry_set_slab); |
b01a9201 | 4003 | kmem_cache_destroy(discard_cmd_slab); |
7fd9e544 | 4004 | kmem_cache_destroy(discard_entry_slab); |
88b88a66 | 4005 | kmem_cache_destroy(inmem_entry_slab); |
7fd9e544 | 4006 | } |