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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> |
351df4b2 JK |
19 | |
20 | #include "f2fs.h" | |
21 | #include "segment.h" | |
22 | #include "node.h" | |
9e4ded3f | 23 | #include "trace.h" |
6ec178da | 24 | #include <trace/events/f2fs.h> |
351df4b2 | 25 | |
9a7f143a CL |
26 | #define __reverse_ffz(x) __reverse_ffs(~(x)) |
27 | ||
7fd9e544 | 28 | static struct kmem_cache *discard_entry_slab; |
b01a9201 | 29 | static struct kmem_cache *discard_cmd_slab; |
184a5cd2 | 30 | static struct kmem_cache *sit_entry_set_slab; |
88b88a66 | 31 | static struct kmem_cache *inmem_entry_slab; |
7fd9e544 | 32 | |
f96999c3 JK |
33 | static unsigned long __reverse_ulong(unsigned char *str) |
34 | { | |
35 | unsigned long tmp = 0; | |
36 | int shift = 24, idx = 0; | |
37 | ||
38 | #if BITS_PER_LONG == 64 | |
39 | shift = 56; | |
40 | #endif | |
41 | while (shift >= 0) { | |
42 | tmp |= (unsigned long)str[idx++] << shift; | |
43 | shift -= BITS_PER_BYTE; | |
44 | } | |
45 | return tmp; | |
46 | } | |
47 | ||
9a7f143a CL |
48 | /* |
49 | * __reverse_ffs is copied from include/asm-generic/bitops/__ffs.h since | |
50 | * MSB and LSB are reversed in a byte by f2fs_set_bit. | |
51 | */ | |
52 | static inline unsigned long __reverse_ffs(unsigned long word) | |
53 | { | |
54 | int num = 0; | |
55 | ||
56 | #if BITS_PER_LONG == 64 | |
f96999c3 | 57 | if ((word & 0xffffffff00000000UL) == 0) |
9a7f143a | 58 | num += 32; |
f96999c3 | 59 | else |
9a7f143a | 60 | word >>= 32; |
9a7f143a | 61 | #endif |
f96999c3 | 62 | if ((word & 0xffff0000) == 0) |
9a7f143a | 63 | num += 16; |
f96999c3 | 64 | else |
9a7f143a | 65 | word >>= 16; |
f96999c3 JK |
66 | |
67 | if ((word & 0xff00) == 0) | |
9a7f143a | 68 | num += 8; |
f96999c3 | 69 | else |
9a7f143a | 70 | word >>= 8; |
f96999c3 | 71 | |
9a7f143a CL |
72 | if ((word & 0xf0) == 0) |
73 | num += 4; | |
74 | else | |
75 | word >>= 4; | |
f96999c3 | 76 | |
9a7f143a CL |
77 | if ((word & 0xc) == 0) |
78 | num += 2; | |
79 | else | |
80 | word >>= 2; | |
f96999c3 | 81 | |
9a7f143a CL |
82 | if ((word & 0x2) == 0) |
83 | num += 1; | |
84 | return num; | |
85 | } | |
86 | ||
87 | /* | |
e1c42045 | 88 | * __find_rev_next(_zero)_bit is copied from lib/find_next_bit.c because |
9a7f143a | 89 | * f2fs_set_bit makes MSB and LSB reversed in a byte. |
692223d1 | 90 | * @size must be integral times of unsigned long. |
9a7f143a | 91 | * Example: |
f96999c3 JK |
92 | * MSB <--> LSB |
93 | * f2fs_set_bit(0, bitmap) => 1000 0000 | |
94 | * f2fs_set_bit(7, bitmap) => 0000 0001 | |
9a7f143a CL |
95 | */ |
96 | static unsigned long __find_rev_next_bit(const unsigned long *addr, | |
97 | unsigned long size, unsigned long offset) | |
98 | { | |
99 | const unsigned long *p = addr + BIT_WORD(offset); | |
692223d1 | 100 | unsigned long result = size; |
9a7f143a | 101 | unsigned long tmp; |
9a7f143a CL |
102 | |
103 | if (offset >= size) | |
104 | return size; | |
105 | ||
692223d1 | 106 | size -= (offset & ~(BITS_PER_LONG - 1)); |
9a7f143a | 107 | offset %= BITS_PER_LONG; |
f96999c3 | 108 | |
692223d1 FL |
109 | while (1) { |
110 | if (*p == 0) | |
111 | goto pass; | |
9a7f143a | 112 | |
f96999c3 | 113 | tmp = __reverse_ulong((unsigned char *)p); |
692223d1 FL |
114 | |
115 | tmp &= ~0UL >> offset; | |
116 | if (size < BITS_PER_LONG) | |
117 | tmp &= (~0UL << (BITS_PER_LONG - size)); | |
9a7f143a | 118 | if (tmp) |
692223d1 FL |
119 | goto found; |
120 | pass: | |
121 | if (size <= BITS_PER_LONG) | |
122 | break; | |
9a7f143a | 123 | size -= BITS_PER_LONG; |
692223d1 | 124 | offset = 0; |
f96999c3 | 125 | p++; |
9a7f143a | 126 | } |
692223d1 FL |
127 | return result; |
128 | found: | |
129 | return result - size + __reverse_ffs(tmp); | |
9a7f143a CL |
130 | } |
131 | ||
132 | static unsigned long __find_rev_next_zero_bit(const unsigned long *addr, | |
133 | unsigned long size, unsigned long offset) | |
134 | { | |
135 | const unsigned long *p = addr + BIT_WORD(offset); | |
80609448 | 136 | unsigned long result = size; |
9a7f143a | 137 | unsigned long tmp; |
9a7f143a CL |
138 | |
139 | if (offset >= size) | |
140 | return size; | |
141 | ||
80609448 | 142 | size -= (offset & ~(BITS_PER_LONG - 1)); |
9a7f143a | 143 | offset %= BITS_PER_LONG; |
80609448 JK |
144 | |
145 | while (1) { | |
146 | if (*p == ~0UL) | |
147 | goto pass; | |
148 | ||
f96999c3 | 149 | tmp = __reverse_ulong((unsigned char *)p); |
80609448 JK |
150 | |
151 | if (offset) | |
152 | tmp |= ~0UL << (BITS_PER_LONG - offset); | |
153 | if (size < BITS_PER_LONG) | |
154 | tmp |= ~0UL >> size; | |
f96999c3 | 155 | if (tmp != ~0UL) |
80609448 JK |
156 | goto found; |
157 | pass: | |
158 | if (size <= BITS_PER_LONG) | |
159 | break; | |
9a7f143a | 160 | size -= BITS_PER_LONG; |
80609448 | 161 | offset = 0; |
f96999c3 | 162 | p++; |
9a7f143a | 163 | } |
80609448 JK |
164 | return result; |
165 | found: | |
166 | return result - size + __reverse_ffz(tmp); | |
9a7f143a CL |
167 | } |
168 | ||
88b88a66 JK |
169 | void register_inmem_page(struct inode *inode, struct page *page) |
170 | { | |
171 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
172 | struct inmem_pages *new; | |
9be32d72 | 173 | |
9e4ded3f | 174 | f2fs_trace_pid(page); |
0722b101 | 175 | |
decd36b6 CY |
176 | set_page_private(page, (unsigned long)ATOMIC_WRITTEN_PAGE); |
177 | SetPagePrivate(page); | |
178 | ||
88b88a66 JK |
179 | new = f2fs_kmem_cache_alloc(inmem_entry_slab, GFP_NOFS); |
180 | ||
181 | /* add atomic page indices to the list */ | |
182 | new->page = page; | |
183 | INIT_LIST_HEAD(&new->list); | |
decd36b6 | 184 | |
88b88a66 JK |
185 | /* increase reference count with clean state */ |
186 | mutex_lock(&fi->inmem_lock); | |
187 | get_page(page); | |
188 | list_add_tail(&new->list, &fi->inmem_pages); | |
8dcf2ff7 | 189 | inc_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES); |
88b88a66 | 190 | mutex_unlock(&fi->inmem_lock); |
8ce67cb0 JK |
191 | |
192 | trace_f2fs_register_inmem_page(page, INMEM); | |
88b88a66 JK |
193 | } |
194 | ||
28bc106b CY |
195 | static int __revoke_inmem_pages(struct inode *inode, |
196 | struct list_head *head, bool drop, bool recover) | |
29b96b54 | 197 | { |
28bc106b | 198 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
29b96b54 | 199 | struct inmem_pages *cur, *tmp; |
28bc106b | 200 | int err = 0; |
29b96b54 CY |
201 | |
202 | list_for_each_entry_safe(cur, tmp, head, list) { | |
28bc106b CY |
203 | struct page *page = cur->page; |
204 | ||
205 | if (drop) | |
206 | trace_f2fs_commit_inmem_page(page, INMEM_DROP); | |
207 | ||
208 | lock_page(page); | |
29b96b54 | 209 | |
28bc106b CY |
210 | if (recover) { |
211 | struct dnode_of_data dn; | |
212 | struct node_info ni; | |
213 | ||
214 | trace_f2fs_commit_inmem_page(page, INMEM_REVOKE); | |
215 | ||
216 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
217 | if (get_dnode_of_data(&dn, page->index, LOOKUP_NODE)) { | |
218 | err = -EAGAIN; | |
219 | goto next; | |
220 | } | |
221 | get_node_info(sbi, dn.nid, &ni); | |
222 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, | |
223 | cur->old_addr, ni.version, true, true); | |
224 | f2fs_put_dnode(&dn); | |
225 | } | |
226 | next: | |
63c52d78 JK |
227 | /* we don't need to invalidate this in the sccessful status */ |
228 | if (drop || recover) | |
229 | ClearPageUptodate(page); | |
28bc106b | 230 | set_page_private(page, 0); |
c81ced05 | 231 | ClearPagePrivate(page); |
28bc106b | 232 | f2fs_put_page(page, 1); |
29b96b54 CY |
233 | |
234 | list_del(&cur->list); | |
235 | kmem_cache_free(inmem_entry_slab, cur); | |
236 | dec_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES); | |
237 | } | |
28bc106b | 238 | return err; |
29b96b54 CY |
239 | } |
240 | ||
241 | void drop_inmem_pages(struct inode *inode) | |
242 | { | |
243 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
244 | ||
245 | mutex_lock(&fi->inmem_lock); | |
28bc106b | 246 | __revoke_inmem_pages(inode, &fi->inmem_pages, true, false); |
29b96b54 | 247 | mutex_unlock(&fi->inmem_lock); |
5fe45743 CY |
248 | |
249 | clear_inode_flag(inode, FI_ATOMIC_FILE); | |
250 | stat_dec_atomic_write(inode); | |
29b96b54 CY |
251 | } |
252 | ||
28bc106b CY |
253 | static int __commit_inmem_pages(struct inode *inode, |
254 | struct list_head *revoke_list) | |
88b88a66 JK |
255 | { |
256 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
257 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
258 | struct inmem_pages *cur, *tmp; | |
88b88a66 | 259 | struct f2fs_io_info fio = { |
05ca3632 | 260 | .sbi = sbi, |
88b88a66 | 261 | .type = DATA, |
04d328de | 262 | .op = REQ_OP_WRITE, |
70fd7614 | 263 | .op_flags = REQ_SYNC | REQ_PRIO, |
4375a336 | 264 | .encrypted_page = NULL, |
88b88a66 | 265 | }; |
942fd319 | 266 | pgoff_t last_idx = ULONG_MAX; |
edb27dee | 267 | int err = 0; |
88b88a66 | 268 | |
88b88a66 | 269 | list_for_each_entry_safe(cur, tmp, &fi->inmem_pages, list) { |
28bc106b CY |
270 | struct page *page = cur->page; |
271 | ||
272 | lock_page(page); | |
273 | if (page->mapping == inode->i_mapping) { | |
274 | trace_f2fs_commit_inmem_page(page, INMEM); | |
275 | ||
276 | set_page_dirty(page); | |
277 | f2fs_wait_on_page_writeback(page, DATA, true); | |
933439c8 | 278 | if (clear_page_dirty_for_io(page)) { |
29b96b54 | 279 | inode_dec_dirty_pages(inode); |
933439c8 CY |
280 | remove_dirty_inode(inode); |
281 | } | |
28bc106b CY |
282 | |
283 | fio.page = page; | |
29b96b54 CY |
284 | err = do_write_data_page(&fio); |
285 | if (err) { | |
28bc106b | 286 | unlock_page(page); |
29b96b54 | 287 | break; |
70c640b1 | 288 | } |
29b96b54 | 289 | |
28bc106b CY |
290 | /* record old blkaddr for revoking */ |
291 | cur->old_addr = fio.old_blkaddr; | |
942fd319 | 292 | last_idx = page->index; |
28bc106b CY |
293 | } |
294 | unlock_page(page); | |
295 | list_move_tail(&cur->list, revoke_list); | |
88b88a66 | 296 | } |
29b96b54 | 297 | |
942fd319 JK |
298 | if (last_idx != ULONG_MAX) |
299 | f2fs_submit_merged_bio_cond(sbi, inode, 0, last_idx, | |
300 | DATA, WRITE); | |
28bc106b CY |
301 | |
302 | if (!err) | |
303 | __revoke_inmem_pages(inode, revoke_list, false, false); | |
304 | ||
29b96b54 CY |
305 | return err; |
306 | } | |
307 | ||
308 | int commit_inmem_pages(struct inode *inode) | |
309 | { | |
310 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
311 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
28bc106b CY |
312 | struct list_head revoke_list; |
313 | int err; | |
29b96b54 | 314 | |
28bc106b | 315 | INIT_LIST_HEAD(&revoke_list); |
29b96b54 CY |
316 | f2fs_balance_fs(sbi, true); |
317 | f2fs_lock_op(sbi); | |
318 | ||
5fe45743 CY |
319 | set_inode_flag(inode, FI_ATOMIC_COMMIT); |
320 | ||
29b96b54 | 321 | mutex_lock(&fi->inmem_lock); |
28bc106b CY |
322 | err = __commit_inmem_pages(inode, &revoke_list); |
323 | if (err) { | |
324 | int ret; | |
325 | /* | |
326 | * try to revoke all committed pages, but still we could fail | |
327 | * due to no memory or other reason, if that happened, EAGAIN | |
328 | * will be returned, which means in such case, transaction is | |
329 | * already not integrity, caller should use journal to do the | |
330 | * recovery or rewrite & commit last transaction. For other | |
331 | * error number, revoking was done by filesystem itself. | |
332 | */ | |
333 | ret = __revoke_inmem_pages(inode, &revoke_list, false, true); | |
334 | if (ret) | |
335 | err = ret; | |
336 | ||
337 | /* drop all uncommitted pages */ | |
338 | __revoke_inmem_pages(inode, &fi->inmem_pages, true, false); | |
339 | } | |
88b88a66 JK |
340 | mutex_unlock(&fi->inmem_lock); |
341 | ||
5fe45743 CY |
342 | clear_inode_flag(inode, FI_ATOMIC_COMMIT); |
343 | ||
29b96b54 | 344 | f2fs_unlock_op(sbi); |
edb27dee | 345 | return err; |
88b88a66 JK |
346 | } |
347 | ||
0a8165d7 | 348 | /* |
351df4b2 JK |
349 | * This function balances dirty node and dentry pages. |
350 | * In addition, it controls garbage collection. | |
351 | */ | |
2c4db1a6 | 352 | void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need) |
351df4b2 | 353 | { |
0f348028 | 354 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
55523519 CY |
355 | if (time_to_inject(sbi, FAULT_CHECKPOINT)) { |
356 | f2fs_show_injection_info(FAULT_CHECKPOINT); | |
0f348028 | 357 | f2fs_stop_checkpoint(sbi, false); |
55523519 | 358 | } |
0f348028 CY |
359 | #endif |
360 | ||
2c4db1a6 JK |
361 | if (!need) |
362 | return; | |
e589c2c4 JK |
363 | |
364 | /* balance_fs_bg is able to be pending */ | |
365 | if (excess_cached_nats(sbi)) | |
366 | f2fs_balance_fs_bg(sbi); | |
367 | ||
351df4b2 | 368 | /* |
029cd28c JK |
369 | * We should do GC or end up with checkpoint, if there are so many dirty |
370 | * dir/node pages without enough free segments. | |
351df4b2 | 371 | */ |
7f3037a5 | 372 | if (has_not_enough_free_secs(sbi, 0, 0)) { |
351df4b2 | 373 | mutex_lock(&sbi->gc_mutex); |
7702bdbe | 374 | f2fs_gc(sbi, false, false); |
351df4b2 JK |
375 | } |
376 | } | |
377 | ||
4660f9c0 JK |
378 | void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi) |
379 | { | |
1dcc336b | 380 | /* try to shrink extent cache when there is no enough memory */ |
554df79e JK |
381 | if (!available_free_memory(sbi, EXTENT_CACHE)) |
382 | f2fs_shrink_extent_tree(sbi, EXTENT_CACHE_SHRINK_NUMBER); | |
1dcc336b | 383 | |
1b38dc8e JK |
384 | /* check the # of cached NAT entries */ |
385 | if (!available_free_memory(sbi, NAT_ENTRIES)) | |
386 | try_to_free_nats(sbi, NAT_ENTRY_PER_BLOCK); | |
387 | ||
31696580 | 388 | if (!available_free_memory(sbi, FREE_NIDS)) |
ad4edb83 JK |
389 | try_to_free_nids(sbi, MAX_FREE_NIDS); |
390 | else | |
22ad0b6a | 391 | build_free_nids(sbi, false, false); |
31696580 | 392 | |
f455c8a5 JK |
393 | if (!is_idle(sbi)) |
394 | return; | |
31696580 | 395 | |
1b38dc8e JK |
396 | /* checkpoint is the only way to shrink partial cached entries */ |
397 | if (!available_free_memory(sbi, NAT_ENTRIES) || | |
60b99b48 | 398 | !available_free_memory(sbi, INO_ENTRIES) || |
7d768d2c CY |
399 | excess_prefree_segs(sbi) || |
400 | excess_dirty_nats(sbi) || | |
f455c8a5 | 401 | f2fs_time_over(sbi, CP_TIME)) { |
e9f5b8b8 CY |
402 | if (test_opt(sbi, DATA_FLUSH)) { |
403 | struct blk_plug plug; | |
404 | ||
405 | blk_start_plug(&plug); | |
36b35a0d | 406 | sync_dirty_inodes(sbi, FILE_INODE); |
e9f5b8b8 CY |
407 | blk_finish_plug(&plug); |
408 | } | |
4660f9c0 | 409 | f2fs_sync_fs(sbi->sb, true); |
42190d2a | 410 | stat_inc_bg_cp_count(sbi->stat_info); |
36b35a0d | 411 | } |
4660f9c0 JK |
412 | } |
413 | ||
3c62be17 JK |
414 | static int __submit_flush_wait(struct block_device *bdev) |
415 | { | |
416 | struct bio *bio = f2fs_bio_alloc(0); | |
417 | int ret; | |
418 | ||
09cb6464 | 419 | bio->bi_opf = REQ_OP_WRITE | REQ_PREFLUSH; |
3c62be17 JK |
420 | bio->bi_bdev = bdev; |
421 | ret = submit_bio_wait(bio); | |
422 | bio_put(bio); | |
423 | return ret; | |
424 | } | |
425 | ||
426 | static int submit_flush_wait(struct f2fs_sb_info *sbi) | |
427 | { | |
428 | int ret = __submit_flush_wait(sbi->sb->s_bdev); | |
429 | int i; | |
430 | ||
431 | if (sbi->s_ndevs && !ret) { | |
432 | for (i = 1; i < sbi->s_ndevs; i++) { | |
d50aaeec JK |
433 | trace_f2fs_issue_flush(FDEV(i).bdev, |
434 | test_opt(sbi, NOBARRIER), | |
435 | test_opt(sbi, FLUSH_MERGE)); | |
3c62be17 JK |
436 | ret = __submit_flush_wait(FDEV(i).bdev); |
437 | if (ret) | |
438 | break; | |
439 | } | |
440 | } | |
441 | return ret; | |
442 | } | |
443 | ||
2163d198 | 444 | static int issue_flush_thread(void *data) |
6b4afdd7 JK |
445 | { |
446 | struct f2fs_sb_info *sbi = data; | |
b01a9201 | 447 | struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info; |
a688b9d9 | 448 | wait_queue_head_t *q = &fcc->flush_wait_queue; |
6b4afdd7 JK |
449 | repeat: |
450 | if (kthread_should_stop()) | |
451 | return 0; | |
452 | ||
721bd4d5 | 453 | if (!llist_empty(&fcc->issue_list)) { |
6b4afdd7 JK |
454 | struct flush_cmd *cmd, *next; |
455 | int ret; | |
456 | ||
721bd4d5 GZ |
457 | fcc->dispatch_list = llist_del_all(&fcc->issue_list); |
458 | fcc->dispatch_list = llist_reverse_order(fcc->dispatch_list); | |
459 | ||
3c62be17 | 460 | ret = submit_flush_wait(sbi); |
721bd4d5 GZ |
461 | llist_for_each_entry_safe(cmd, next, |
462 | fcc->dispatch_list, llnode) { | |
6b4afdd7 | 463 | cmd->ret = ret; |
6b4afdd7 JK |
464 | complete(&cmd->wait); |
465 | } | |
a688b9d9 | 466 | fcc->dispatch_list = NULL; |
6b4afdd7 JK |
467 | } |
468 | ||
a688b9d9 | 469 | wait_event_interruptible(*q, |
721bd4d5 | 470 | kthread_should_stop() || !llist_empty(&fcc->issue_list)); |
6b4afdd7 JK |
471 | goto repeat; |
472 | } | |
473 | ||
474 | int f2fs_issue_flush(struct f2fs_sb_info *sbi) | |
475 | { | |
b01a9201 | 476 | struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info; |
adf8d90b | 477 | struct flush_cmd cmd; |
6b4afdd7 | 478 | |
0f7b2abd JK |
479 | if (test_opt(sbi, NOBARRIER)) |
480 | return 0; | |
481 | ||
73545817 CY |
482 | if (!test_opt(sbi, FLUSH_MERGE)) |
483 | return submit_flush_wait(sbi); | |
484 | ||
485 | if (!atomic_read(&fcc->submit_flush)) { | |
740432f8 JK |
486 | int ret; |
487 | ||
0a87f664 | 488 | atomic_inc(&fcc->submit_flush); |
3c62be17 | 489 | ret = submit_flush_wait(sbi); |
0a87f664 | 490 | atomic_dec(&fcc->submit_flush); |
740432f8 JK |
491 | return ret; |
492 | } | |
6b4afdd7 | 493 | |
adf8d90b | 494 | init_completion(&cmd.wait); |
6b4afdd7 | 495 | |
0a87f664 | 496 | atomic_inc(&fcc->submit_flush); |
721bd4d5 | 497 | llist_add(&cmd.llnode, &fcc->issue_list); |
6b4afdd7 | 498 | |
a688b9d9 GZ |
499 | if (!fcc->dispatch_list) |
500 | wake_up(&fcc->flush_wait_queue); | |
6b4afdd7 | 501 | |
5eba8c5d JK |
502 | if (fcc->f2fs_issue_flush) { |
503 | wait_for_completion(&cmd.wait); | |
504 | atomic_dec(&fcc->submit_flush); | |
505 | } else { | |
506 | llist_del_all(&fcc->issue_list); | |
507 | atomic_set(&fcc->submit_flush, 0); | |
508 | } | |
adf8d90b CY |
509 | |
510 | return cmd.ret; | |
6b4afdd7 JK |
511 | } |
512 | ||
2163d198 GZ |
513 | int create_flush_cmd_control(struct f2fs_sb_info *sbi) |
514 | { | |
515 | dev_t dev = sbi->sb->s_bdev->bd_dev; | |
516 | struct flush_cmd_control *fcc; | |
517 | int err = 0; | |
518 | ||
b01a9201 JK |
519 | if (SM_I(sbi)->fcc_info) { |
520 | fcc = SM_I(sbi)->fcc_info; | |
5eba8c5d JK |
521 | goto init_thread; |
522 | } | |
523 | ||
2163d198 GZ |
524 | fcc = kzalloc(sizeof(struct flush_cmd_control), GFP_KERNEL); |
525 | if (!fcc) | |
526 | return -ENOMEM; | |
0a87f664 | 527 | atomic_set(&fcc->submit_flush, 0); |
2163d198 | 528 | init_waitqueue_head(&fcc->flush_wait_queue); |
721bd4d5 | 529 | init_llist_head(&fcc->issue_list); |
b01a9201 | 530 | SM_I(sbi)->fcc_info = fcc; |
5eba8c5d | 531 | init_thread: |
2163d198 GZ |
532 | fcc->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi, |
533 | "f2fs_flush-%u:%u", MAJOR(dev), MINOR(dev)); | |
534 | if (IS_ERR(fcc->f2fs_issue_flush)) { | |
535 | err = PTR_ERR(fcc->f2fs_issue_flush); | |
536 | kfree(fcc); | |
b01a9201 | 537 | SM_I(sbi)->fcc_info = NULL; |
2163d198 GZ |
538 | return err; |
539 | } | |
2163d198 GZ |
540 | |
541 | return err; | |
542 | } | |
543 | ||
5eba8c5d | 544 | void destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free) |
2163d198 | 545 | { |
b01a9201 | 546 | struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info; |
2163d198 | 547 | |
5eba8c5d JK |
548 | if (fcc && fcc->f2fs_issue_flush) { |
549 | struct task_struct *flush_thread = fcc->f2fs_issue_flush; | |
550 | ||
551 | fcc->f2fs_issue_flush = NULL; | |
552 | kthread_stop(flush_thread); | |
553 | } | |
554 | if (free) { | |
555 | kfree(fcc); | |
b01a9201 | 556 | SM_I(sbi)->fcc_info = NULL; |
5eba8c5d | 557 | } |
2163d198 GZ |
558 | } |
559 | ||
351df4b2 JK |
560 | static void __locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno, |
561 | enum dirty_type dirty_type) | |
562 | { | |
563 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
564 | ||
565 | /* need not be added */ | |
566 | if (IS_CURSEG(sbi, segno)) | |
567 | return; | |
568 | ||
569 | if (!test_and_set_bit(segno, dirty_i->dirty_segmap[dirty_type])) | |
570 | dirty_i->nr_dirty[dirty_type]++; | |
571 | ||
572 | if (dirty_type == DIRTY) { | |
573 | struct seg_entry *sentry = get_seg_entry(sbi, segno); | |
4625d6aa | 574 | enum dirty_type t = sentry->type; |
b2f2c390 | 575 | |
ec325b52 JK |
576 | if (unlikely(t >= DIRTY)) { |
577 | f2fs_bug_on(sbi, 1); | |
578 | return; | |
579 | } | |
4625d6aa CL |
580 | if (!test_and_set_bit(segno, dirty_i->dirty_segmap[t])) |
581 | dirty_i->nr_dirty[t]++; | |
351df4b2 JK |
582 | } |
583 | } | |
584 | ||
585 | static void __remove_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno, | |
586 | enum dirty_type dirty_type) | |
587 | { | |
588 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
589 | ||
590 | if (test_and_clear_bit(segno, dirty_i->dirty_segmap[dirty_type])) | |
591 | dirty_i->nr_dirty[dirty_type]--; | |
592 | ||
593 | if (dirty_type == DIRTY) { | |
4625d6aa CL |
594 | struct seg_entry *sentry = get_seg_entry(sbi, segno); |
595 | enum dirty_type t = sentry->type; | |
596 | ||
597 | if (test_and_clear_bit(segno, dirty_i->dirty_segmap[t])) | |
598 | dirty_i->nr_dirty[t]--; | |
b2f2c390 | 599 | |
5ec4e49f JK |
600 | if (get_valid_blocks(sbi, segno, sbi->segs_per_sec) == 0) |
601 | clear_bit(GET_SECNO(sbi, segno), | |
602 | dirty_i->victim_secmap); | |
351df4b2 JK |
603 | } |
604 | } | |
605 | ||
0a8165d7 | 606 | /* |
351df4b2 JK |
607 | * Should not occur error such as -ENOMEM. |
608 | * Adding dirty entry into seglist is not critical operation. | |
609 | * If a given segment is one of current working segments, it won't be added. | |
610 | */ | |
8d8451af | 611 | static void locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno) |
351df4b2 JK |
612 | { |
613 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
614 | unsigned short valid_blocks; | |
615 | ||
616 | if (segno == NULL_SEGNO || IS_CURSEG(sbi, segno)) | |
617 | return; | |
618 | ||
619 | mutex_lock(&dirty_i->seglist_lock); | |
620 | ||
621 | valid_blocks = get_valid_blocks(sbi, segno, 0); | |
622 | ||
623 | if (valid_blocks == 0) { | |
624 | __locate_dirty_segment(sbi, segno, PRE); | |
625 | __remove_dirty_segment(sbi, segno, DIRTY); | |
626 | } else if (valid_blocks < sbi->blocks_per_seg) { | |
627 | __locate_dirty_segment(sbi, segno, DIRTY); | |
628 | } else { | |
629 | /* Recovery routine with SSR needs this */ | |
630 | __remove_dirty_segment(sbi, segno, DIRTY); | |
631 | } | |
632 | ||
633 | mutex_unlock(&dirty_i->seglist_lock); | |
351df4b2 JK |
634 | } |
635 | ||
15469963 | 636 | static void __add_discard_cmd(struct f2fs_sb_info *sbi, |
4e6a8d9b | 637 | struct bio *bio, block_t lstart, block_t len) |
275b66b0 | 638 | { |
0b54fb84 JK |
639 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
640 | struct list_head *cmd_list = &(dcc->discard_cmd_list); | |
b01a9201 | 641 | struct discard_cmd *dc; |
275b66b0 | 642 | |
b01a9201 JK |
643 | dc = f2fs_kmem_cache_alloc(discard_cmd_slab, GFP_NOFS); |
644 | INIT_LIST_HEAD(&dc->list); | |
645 | dc->bio = bio; | |
15469963 | 646 | bio->bi_private = dc; |
b01a9201 JK |
647 | dc->lstart = lstart; |
648 | dc->len = len; | |
15469963 | 649 | dc->state = D_PREP; |
b01a9201 | 650 | init_completion(&dc->wait); |
15469963 JK |
651 | |
652 | mutex_lock(&dcc->cmd_lock); | |
0b54fb84 | 653 | list_add_tail(&dc->list, cmd_list); |
15469963 JK |
654 | mutex_unlock(&dcc->cmd_lock); |
655 | } | |
656 | ||
657 | static void __remove_discard_cmd(struct f2fs_sb_info *sbi, struct discard_cmd *dc) | |
658 | { | |
659 | int err = dc->bio->bi_error; | |
275b66b0 | 660 | |
dcc9165d JK |
661 | if (dc->state == D_DONE) |
662 | atomic_dec(&(SM_I(sbi)->dcc_info->submit_discard)); | |
663 | ||
15469963 JK |
664 | if (err == -EOPNOTSUPP) |
665 | err = 0; | |
666 | ||
667 | if (err) | |
668 | f2fs_msg(sbi->sb, KERN_INFO, | |
669 | "Issue discard failed, ret: %d", err); | |
670 | bio_put(dc->bio); | |
671 | list_del(&dc->list); | |
672 | kmem_cache_free(discard_cmd_slab, dc); | |
275b66b0 CY |
673 | } |
674 | ||
4e6a8d9b JK |
675 | /* This should be covered by global mutex, &sit_i->sentry_lock */ |
676 | void f2fs_wait_discard_bio(struct f2fs_sb_info *sbi, block_t blkaddr) | |
275b66b0 | 677 | { |
0b54fb84 JK |
678 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
679 | struct list_head *wait_list = &(dcc->discard_cmd_list); | |
b01a9201 | 680 | struct discard_cmd *dc, *tmp; |
40465257 | 681 | struct blk_plug plug; |
275b66b0 | 682 | |
15469963 | 683 | mutex_lock(&dcc->cmd_lock); |
40465257 JK |
684 | |
685 | blk_start_plug(&plug); | |
686 | ||
b01a9201 | 687 | list_for_each_entry_safe(dc, tmp, wait_list, list) { |
275b66b0 | 688 | |
15469963 JK |
689 | if (blkaddr == NULL_ADDR) { |
690 | if (dc->state == D_PREP) { | |
691 | dc->state = D_SUBMIT; | |
692 | submit_bio(dc->bio); | |
dcc9165d | 693 | atomic_inc(&dcc->submit_discard); |
15469963 | 694 | } |
15469963 JK |
695 | continue; |
696 | } | |
697 | ||
698 | if (dc->lstart <= blkaddr && blkaddr < dc->lstart + dc->len) { | |
699 | if (dc->state == D_SUBMIT) | |
b01a9201 | 700 | wait_for_completion_io(&dc->wait); |
4e6a8d9b | 701 | else |
15469963 | 702 | __remove_discard_cmd(sbi, dc); |
4e6a8d9b | 703 | } |
275b66b0 | 704 | } |
40465257 JK |
705 | blk_finish_plug(&plug); |
706 | ||
707 | /* this comes from f2fs_put_super */ | |
708 | if (blkaddr == NULL_ADDR) { | |
709 | list_for_each_entry_safe(dc, tmp, wait_list, list) { | |
710 | wait_for_completion_io(&dc->wait); | |
711 | __remove_discard_cmd(sbi, dc); | |
712 | } | |
713 | } | |
15469963 | 714 | mutex_unlock(&dcc->cmd_lock); |
275b66b0 CY |
715 | } |
716 | ||
b01a9201 | 717 | static void f2fs_submit_discard_endio(struct bio *bio) |
275b66b0 | 718 | { |
b01a9201 | 719 | struct discard_cmd *dc = (struct discard_cmd *)bio->bi_private; |
275b66b0 | 720 | |
b01a9201 | 721 | complete(&dc->wait); |
15469963 | 722 | dc->state = D_DONE; |
275b66b0 CY |
723 | } |
724 | ||
15469963 JK |
725 | static int issue_discard_thread(void *data) |
726 | { | |
727 | struct f2fs_sb_info *sbi = data; | |
728 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
729 | wait_queue_head_t *q = &dcc->discard_wait_queue; | |
730 | struct list_head *cmd_list = &dcc->discard_cmd_list; | |
731 | struct discard_cmd *dc, *tmp; | |
732 | struct blk_plug plug; | |
733 | int iter = 0; | |
734 | repeat: | |
735 | if (kthread_should_stop()) | |
736 | return 0; | |
737 | ||
738 | blk_start_plug(&plug); | |
739 | ||
740 | mutex_lock(&dcc->cmd_lock); | |
741 | list_for_each_entry_safe(dc, tmp, cmd_list, list) { | |
742 | if (dc->state == D_PREP) { | |
743 | dc->state = D_SUBMIT; | |
744 | submit_bio(dc->bio); | |
dcc9165d | 745 | atomic_inc(&dcc->submit_discard); |
15469963 JK |
746 | if (iter++ > DISCARD_ISSUE_RATE) |
747 | break; | |
748 | } else if (dc->state == D_DONE) { | |
749 | __remove_discard_cmd(sbi, dc); | |
750 | } | |
751 | } | |
752 | mutex_unlock(&dcc->cmd_lock); | |
753 | ||
754 | blk_finish_plug(&plug); | |
755 | ||
756 | iter = 0; | |
757 | congestion_wait(BLK_RW_SYNC, HZ/50); | |
758 | ||
759 | wait_event_interruptible(*q, | |
760 | kthread_should_stop() || !list_empty(&dcc->discard_cmd_list)); | |
761 | goto repeat; | |
762 | } | |
763 | ||
764 | ||
275b66b0 | 765 | /* this function is copied from blkdev_issue_discard from block/blk-lib.c */ |
f46e8809 | 766 | static int __f2fs_issue_discard_async(struct f2fs_sb_info *sbi, |
3c62be17 | 767 | struct block_device *bdev, block_t blkstart, block_t blklen) |
275b66b0 | 768 | { |
275b66b0 | 769 | struct bio *bio = NULL; |
4e6a8d9b | 770 | block_t lblkstart = blkstart; |
275b66b0 CY |
771 | int err; |
772 | ||
d50aaeec | 773 | trace_f2fs_issue_discard(bdev, blkstart, blklen); |
f46e8809 | 774 | |
3c62be17 JK |
775 | if (sbi->s_ndevs) { |
776 | int devi = f2fs_target_device_index(sbi, blkstart); | |
777 | ||
778 | blkstart -= FDEV(devi).start_blk; | |
779 | } | |
f46e8809 DLM |
780 | err = __blkdev_issue_discard(bdev, |
781 | SECTOR_FROM_BLOCK(blkstart), | |
782 | SECTOR_FROM_BLOCK(blklen), | |
783 | GFP_NOFS, 0, &bio); | |
275b66b0 | 784 | if (!err && bio) { |
b01a9201 | 785 | bio->bi_end_io = f2fs_submit_discard_endio; |
275b66b0 | 786 | bio->bi_opf |= REQ_SYNC; |
15469963 JK |
787 | |
788 | __add_discard_cmd(sbi, bio, lblkstart, blklen); | |
789 | wake_up(&SM_I(sbi)->dcc_info->discard_wait_queue); | |
275b66b0 | 790 | } |
275b66b0 CY |
791 | return err; |
792 | } | |
793 | ||
f46e8809 | 794 | #ifdef CONFIG_BLK_DEV_ZONED |
3c62be17 JK |
795 | static int __f2fs_issue_discard_zone(struct f2fs_sb_info *sbi, |
796 | struct block_device *bdev, block_t blkstart, block_t blklen) | |
f46e8809 | 797 | { |
92592285 | 798 | sector_t sector, nr_sects; |
3c62be17 JK |
799 | int devi = 0; |
800 | ||
801 | if (sbi->s_ndevs) { | |
802 | devi = f2fs_target_device_index(sbi, blkstart); | |
803 | blkstart -= FDEV(devi).start_blk; | |
804 | } | |
f46e8809 DLM |
805 | |
806 | /* | |
807 | * We need to know the type of the zone: for conventional zones, | |
808 | * use regular discard if the drive supports it. For sequential | |
809 | * zones, reset the zone write pointer. | |
810 | */ | |
3c62be17 | 811 | switch (get_blkz_type(sbi, bdev, blkstart)) { |
f46e8809 DLM |
812 | |
813 | case BLK_ZONE_TYPE_CONVENTIONAL: | |
814 | if (!blk_queue_discard(bdev_get_queue(bdev))) | |
815 | return 0; | |
3c62be17 | 816 | return __f2fs_issue_discard_async(sbi, bdev, blkstart, blklen); |
f46e8809 DLM |
817 | case BLK_ZONE_TYPE_SEQWRITE_REQ: |
818 | case BLK_ZONE_TYPE_SEQWRITE_PREF: | |
92592285 JK |
819 | sector = SECTOR_FROM_BLOCK(blkstart); |
820 | nr_sects = SECTOR_FROM_BLOCK(blklen); | |
821 | ||
822 | if (sector & (bdev_zone_sectors(bdev) - 1) || | |
823 | nr_sects != bdev_zone_sectors(bdev)) { | |
824 | f2fs_msg(sbi->sb, KERN_INFO, | |
825 | "(%d) %s: Unaligned discard attempted (block %x + %x)", | |
826 | devi, sbi->s_ndevs ? FDEV(devi).path: "", | |
827 | blkstart, blklen); | |
828 | return -EIO; | |
829 | } | |
d50aaeec | 830 | trace_f2fs_issue_reset_zone(bdev, blkstart); |
f46e8809 DLM |
831 | return blkdev_reset_zones(bdev, sector, |
832 | nr_sects, GFP_NOFS); | |
833 | default: | |
834 | /* Unknown zone type: broken device ? */ | |
835 | return -EIO; | |
836 | } | |
837 | } | |
838 | #endif | |
839 | ||
3c62be17 JK |
840 | static int __issue_discard_async(struct f2fs_sb_info *sbi, |
841 | struct block_device *bdev, block_t blkstart, block_t blklen) | |
842 | { | |
843 | #ifdef CONFIG_BLK_DEV_ZONED | |
844 | if (f2fs_sb_mounted_blkzoned(sbi->sb) && | |
845 | bdev_zoned_model(bdev) != BLK_ZONED_NONE) | |
846 | return __f2fs_issue_discard_zone(sbi, bdev, blkstart, blklen); | |
847 | #endif | |
848 | return __f2fs_issue_discard_async(sbi, bdev, blkstart, blklen); | |
849 | } | |
850 | ||
1e87a78d | 851 | static int f2fs_issue_discard(struct f2fs_sb_info *sbi, |
37208879 JK |
852 | block_t blkstart, block_t blklen) |
853 | { | |
3c62be17 JK |
854 | sector_t start = blkstart, len = 0; |
855 | struct block_device *bdev; | |
a66cdd98 JK |
856 | struct seg_entry *se; |
857 | unsigned int offset; | |
858 | block_t i; | |
3c62be17 JK |
859 | int err = 0; |
860 | ||
861 | bdev = f2fs_target_device(sbi, blkstart, NULL); | |
862 | ||
863 | for (i = blkstart; i < blkstart + blklen; i++, len++) { | |
864 | if (i != start) { | |
865 | struct block_device *bdev2 = | |
866 | f2fs_target_device(sbi, i, NULL); | |
867 | ||
868 | if (bdev2 != bdev) { | |
869 | err = __issue_discard_async(sbi, bdev, | |
870 | start, len); | |
871 | if (err) | |
872 | return err; | |
873 | bdev = bdev2; | |
874 | start = i; | |
875 | len = 0; | |
876 | } | |
877 | } | |
a66cdd98 | 878 | |
a66cdd98 JK |
879 | se = get_seg_entry(sbi, GET_SEGNO(sbi, i)); |
880 | offset = GET_BLKOFF_FROM_SEG0(sbi, i); | |
881 | ||
882 | if (!f2fs_test_and_set_bit(offset, se->discard_map)) | |
883 | sbi->discard_blks--; | |
884 | } | |
f46e8809 | 885 | |
3c62be17 JK |
886 | if (len) |
887 | err = __issue_discard_async(sbi, bdev, start, len); | |
888 | return err; | |
1e87a78d JK |
889 | } |
890 | ||
adf4983b | 891 | static void __add_discard_entry(struct f2fs_sb_info *sbi, |
a66cdd98 JK |
892 | struct cp_control *cpc, struct seg_entry *se, |
893 | unsigned int start, unsigned int end) | |
b2955550 | 894 | { |
0b54fb84 | 895 | struct list_head *head = &SM_I(sbi)->dcc_info->discard_entry_list; |
adf4983b JK |
896 | struct discard_entry *new, *last; |
897 | ||
898 | if (!list_empty(head)) { | |
899 | last = list_last_entry(head, struct discard_entry, list); | |
900 | if (START_BLOCK(sbi, cpc->trim_start) + start == | |
ad4d307f JK |
901 | last->blkaddr + last->len && |
902 | last->len < MAX_DISCARD_BLOCKS(sbi)) { | |
adf4983b JK |
903 | last->len += end - start; |
904 | goto done; | |
905 | } | |
906 | } | |
907 | ||
908 | new = f2fs_kmem_cache_alloc(discard_entry_slab, GFP_NOFS); | |
909 | INIT_LIST_HEAD(&new->list); | |
910 | new->blkaddr = START_BLOCK(sbi, cpc->trim_start) + start; | |
911 | new->len = end - start; | |
912 | list_add_tail(&new->list, head); | |
913 | done: | |
0b54fb84 | 914 | SM_I(sbi)->dcc_info->nr_discards += end - start; |
adf4983b JK |
915 | } |
916 | ||
25290fa5 JK |
917 | static bool add_discard_addrs(struct f2fs_sb_info *sbi, struct cp_control *cpc, |
918 | bool check_only) | |
adf4983b | 919 | { |
b2955550 JK |
920 | int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long); |
921 | int max_blocks = sbi->blocks_per_seg; | |
4b2fecc8 | 922 | struct seg_entry *se = get_seg_entry(sbi, cpc->trim_start); |
b2955550 JK |
923 | unsigned long *cur_map = (unsigned long *)se->cur_valid_map; |
924 | unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map; | |
a66cdd98 | 925 | unsigned long *discard_map = (unsigned long *)se->discard_map; |
60a3b782 | 926 | unsigned long *dmap = SIT_I(sbi)->tmp_map; |
b2955550 | 927 | unsigned int start = 0, end = -1; |
4b2fecc8 | 928 | bool force = (cpc->reason == CP_DISCARD); |
b2955550 JK |
929 | int i; |
930 | ||
3e025740 | 931 | if (se->valid_blocks == max_blocks || !f2fs_discard_en(sbi)) |
25290fa5 | 932 | return false; |
b2955550 | 933 | |
a66cdd98 JK |
934 | if (!force) { |
935 | if (!test_opt(sbi, DISCARD) || !se->valid_blocks || | |
0b54fb84 JK |
936 | SM_I(sbi)->dcc_info->nr_discards >= |
937 | SM_I(sbi)->dcc_info->max_discards) | |
25290fa5 | 938 | return false; |
4b2fecc8 JK |
939 | } |
940 | ||
b2955550 JK |
941 | /* SIT_VBLOCK_MAP_SIZE should be multiple of sizeof(unsigned long) */ |
942 | for (i = 0; i < entries; i++) | |
a66cdd98 | 943 | dmap[i] = force ? ~ckpt_map[i] & ~discard_map[i] : |
d7bc2484 | 944 | (cur_map[i] ^ ckpt_map[i]) & ckpt_map[i]; |
b2955550 | 945 | |
0b54fb84 JK |
946 | while (force || SM_I(sbi)->dcc_info->nr_discards <= |
947 | SM_I(sbi)->dcc_info->max_discards) { | |
b2955550 JK |
948 | start = __find_rev_next_bit(dmap, max_blocks, end + 1); |
949 | if (start >= max_blocks) | |
950 | break; | |
951 | ||
952 | end = __find_rev_next_zero_bit(dmap, max_blocks, start + 1); | |
c7b41e16 YH |
953 | if (force && start && end != max_blocks |
954 | && (end - start) < cpc->trim_minlen) | |
955 | continue; | |
956 | ||
25290fa5 JK |
957 | if (check_only) |
958 | return true; | |
959 | ||
a66cdd98 | 960 | __add_discard_entry(sbi, cpc, se, start, end); |
b2955550 | 961 | } |
25290fa5 | 962 | return false; |
b2955550 JK |
963 | } |
964 | ||
4b2fecc8 JK |
965 | void release_discard_addrs(struct f2fs_sb_info *sbi) |
966 | { | |
0b54fb84 | 967 | struct list_head *head = &(SM_I(sbi)->dcc_info->discard_entry_list); |
4b2fecc8 JK |
968 | struct discard_entry *entry, *this; |
969 | ||
970 | /* drop caches */ | |
971 | list_for_each_entry_safe(entry, this, head, list) { | |
972 | list_del(&entry->list); | |
973 | kmem_cache_free(discard_entry_slab, entry); | |
974 | } | |
975 | } | |
976 | ||
0a8165d7 | 977 | /* |
351df4b2 JK |
978 | * Should call clear_prefree_segments after checkpoint is done. |
979 | */ | |
980 | static void set_prefree_as_free_segments(struct f2fs_sb_info *sbi) | |
981 | { | |
982 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
b65ee148 | 983 | unsigned int segno; |
351df4b2 JK |
984 | |
985 | mutex_lock(&dirty_i->seglist_lock); | |
7cd8558b | 986 | for_each_set_bit(segno, dirty_i->dirty_segmap[PRE], MAIN_SEGS(sbi)) |
351df4b2 | 987 | __set_test_and_free(sbi, segno); |
351df4b2 JK |
988 | mutex_unlock(&dirty_i->seglist_lock); |
989 | } | |
990 | ||
836b5a63 | 991 | void clear_prefree_segments(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
351df4b2 | 992 | { |
0b54fb84 | 993 | struct list_head *head = &(SM_I(sbi)->dcc_info->discard_entry_list); |
2d7b822a | 994 | struct discard_entry *entry, *this; |
351df4b2 | 995 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); |
29e59c14 | 996 | unsigned long *prefree_map = dirty_i->dirty_segmap[PRE]; |
29e59c14 | 997 | unsigned int start = 0, end = -1; |
36abef4e | 998 | unsigned int secno, start_segno; |
c24a0fd6 | 999 | bool force = (cpc->reason == CP_DISCARD); |
351df4b2 JK |
1000 | |
1001 | mutex_lock(&dirty_i->seglist_lock); | |
29e59c14 | 1002 | |
351df4b2 | 1003 | while (1) { |
29e59c14 | 1004 | int i; |
7cd8558b JK |
1005 | start = find_next_bit(prefree_map, MAIN_SEGS(sbi), end + 1); |
1006 | if (start >= MAIN_SEGS(sbi)) | |
351df4b2 | 1007 | break; |
7cd8558b JK |
1008 | end = find_next_zero_bit(prefree_map, MAIN_SEGS(sbi), |
1009 | start + 1); | |
29e59c14 CL |
1010 | |
1011 | for (i = start; i < end; i++) | |
1012 | clear_bit(i, prefree_map); | |
1013 | ||
1014 | dirty_i->nr_dirty[PRE] -= end - start; | |
1015 | ||
650d3c4e | 1016 | if (!test_opt(sbi, DISCARD)) |
29e59c14 | 1017 | continue; |
351df4b2 | 1018 | |
650d3c4e YH |
1019 | if (force && start >= cpc->trim_start && |
1020 | (end - 1) <= cpc->trim_end) | |
1021 | continue; | |
1022 | ||
36abef4e JK |
1023 | if (!test_opt(sbi, LFS) || sbi->segs_per_sec == 1) { |
1024 | f2fs_issue_discard(sbi, START_BLOCK(sbi, start), | |
37208879 | 1025 | (end - start) << sbi->log_blocks_per_seg); |
36abef4e JK |
1026 | continue; |
1027 | } | |
1028 | next: | |
1029 | secno = GET_SECNO(sbi, start); | |
1030 | start_segno = secno * sbi->segs_per_sec; | |
1031 | if (!IS_CURSEC(sbi, secno) && | |
1032 | !get_valid_blocks(sbi, start, sbi->segs_per_sec)) | |
1033 | f2fs_issue_discard(sbi, START_BLOCK(sbi, start_segno), | |
1034 | sbi->segs_per_sec << sbi->log_blocks_per_seg); | |
1035 | ||
1036 | start = start_segno + sbi->segs_per_sec; | |
1037 | if (start < end) | |
1038 | goto next; | |
351df4b2 JK |
1039 | } |
1040 | mutex_unlock(&dirty_i->seglist_lock); | |
b2955550 JK |
1041 | |
1042 | /* send small discards */ | |
2d7b822a | 1043 | list_for_each_entry_safe(entry, this, head, list) { |
c24a0fd6 | 1044 | if (force && entry->len < cpc->trim_minlen) |
836b5a63 | 1045 | goto skip; |
37208879 | 1046 | f2fs_issue_discard(sbi, entry->blkaddr, entry->len); |
f56aa1c5 | 1047 | cpc->trimmed += entry->len; |
836b5a63 | 1048 | skip: |
b2955550 | 1049 | list_del(&entry->list); |
0b54fb84 | 1050 | SM_I(sbi)->dcc_info->nr_discards -= entry->len; |
b2955550 JK |
1051 | kmem_cache_free(discard_entry_slab, entry); |
1052 | } | |
351df4b2 JK |
1053 | } |
1054 | ||
8ed59745 | 1055 | static int create_discard_cmd_control(struct f2fs_sb_info *sbi) |
0b54fb84 | 1056 | { |
15469963 | 1057 | dev_t dev = sbi->sb->s_bdev->bd_dev; |
0b54fb84 JK |
1058 | struct discard_cmd_control *dcc; |
1059 | int err = 0; | |
1060 | ||
1061 | if (SM_I(sbi)->dcc_info) { | |
1062 | dcc = SM_I(sbi)->dcc_info; | |
1063 | goto init_thread; | |
1064 | } | |
1065 | ||
1066 | dcc = kzalloc(sizeof(struct discard_cmd_control), GFP_KERNEL); | |
1067 | if (!dcc) | |
1068 | return -ENOMEM; | |
1069 | ||
1070 | INIT_LIST_HEAD(&dcc->discard_entry_list); | |
1071 | INIT_LIST_HEAD(&dcc->discard_cmd_list); | |
15469963 | 1072 | mutex_init(&dcc->cmd_lock); |
dcc9165d | 1073 | atomic_set(&dcc->submit_discard, 0); |
0b54fb84 JK |
1074 | dcc->nr_discards = 0; |
1075 | dcc->max_discards = 0; | |
1076 | ||
15469963 | 1077 | init_waitqueue_head(&dcc->discard_wait_queue); |
0b54fb84 JK |
1078 | SM_I(sbi)->dcc_info = dcc; |
1079 | init_thread: | |
15469963 JK |
1080 | dcc->f2fs_issue_discard = kthread_run(issue_discard_thread, sbi, |
1081 | "f2fs_discard-%u:%u", MAJOR(dev), MINOR(dev)); | |
1082 | if (IS_ERR(dcc->f2fs_issue_discard)) { | |
1083 | err = PTR_ERR(dcc->f2fs_issue_discard); | |
1084 | kfree(dcc); | |
1085 | SM_I(sbi)->dcc_info = NULL; | |
1086 | return err; | |
1087 | } | |
1088 | ||
0b54fb84 JK |
1089 | return err; |
1090 | } | |
1091 | ||
8ed59745 | 1092 | static void destroy_discard_cmd_control(struct f2fs_sb_info *sbi, bool free) |
0b54fb84 JK |
1093 | { |
1094 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1095 | ||
15469963 JK |
1096 | if (dcc && dcc->f2fs_issue_discard) { |
1097 | struct task_struct *discard_thread = dcc->f2fs_issue_discard; | |
1098 | ||
1099 | dcc->f2fs_issue_discard = NULL; | |
1100 | kthread_stop(discard_thread); | |
1101 | } | |
0b54fb84 JK |
1102 | if (free) { |
1103 | kfree(dcc); | |
1104 | SM_I(sbi)->dcc_info = NULL; | |
1105 | } | |
1106 | } | |
1107 | ||
184a5cd2 | 1108 | static bool __mark_sit_entry_dirty(struct f2fs_sb_info *sbi, unsigned int segno) |
351df4b2 JK |
1109 | { |
1110 | struct sit_info *sit_i = SIT_I(sbi); | |
184a5cd2 CY |
1111 | |
1112 | if (!__test_and_set_bit(segno, sit_i->dirty_sentries_bitmap)) { | |
351df4b2 | 1113 | sit_i->dirty_sentries++; |
184a5cd2 CY |
1114 | return false; |
1115 | } | |
1116 | ||
1117 | return true; | |
351df4b2 JK |
1118 | } |
1119 | ||
1120 | static void __set_sit_entry_type(struct f2fs_sb_info *sbi, int type, | |
1121 | unsigned int segno, int modified) | |
1122 | { | |
1123 | struct seg_entry *se = get_seg_entry(sbi, segno); | |
1124 | se->type = type; | |
1125 | if (modified) | |
1126 | __mark_sit_entry_dirty(sbi, segno); | |
1127 | } | |
1128 | ||
1129 | static void update_sit_entry(struct f2fs_sb_info *sbi, block_t blkaddr, int del) | |
1130 | { | |
1131 | struct seg_entry *se; | |
1132 | unsigned int segno, offset; | |
1133 | long int new_vblocks; | |
1134 | ||
1135 | segno = GET_SEGNO(sbi, blkaddr); | |
1136 | ||
1137 | se = get_seg_entry(sbi, segno); | |
1138 | new_vblocks = se->valid_blocks + del; | |
491c0854 | 1139 | offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); |
351df4b2 | 1140 | |
9850cf4a | 1141 | f2fs_bug_on(sbi, (new_vblocks >> (sizeof(unsigned short) << 3) || |
351df4b2 JK |
1142 | (new_vblocks > sbi->blocks_per_seg))); |
1143 | ||
1144 | se->valid_blocks = new_vblocks; | |
1145 | se->mtime = get_mtime(sbi); | |
1146 | SIT_I(sbi)->max_mtime = se->mtime; | |
1147 | ||
1148 | /* Update valid block bitmap */ | |
1149 | if (del > 0) { | |
355e7891 CY |
1150 | if (f2fs_test_and_set_bit(offset, se->cur_valid_map)) { |
1151 | #ifdef CONFIG_F2FS_CHECK_FS | |
1152 | if (f2fs_test_and_set_bit(offset, | |
1153 | se->cur_valid_map_mir)) | |
1154 | f2fs_bug_on(sbi, 1); | |
1155 | else | |
1156 | WARN_ON(1); | |
1157 | #else | |
05796763 | 1158 | f2fs_bug_on(sbi, 1); |
355e7891 CY |
1159 | #endif |
1160 | } | |
3e025740 JK |
1161 | if (f2fs_discard_en(sbi) && |
1162 | !f2fs_test_and_set_bit(offset, se->discard_map)) | |
a66cdd98 | 1163 | sbi->discard_blks--; |
351df4b2 | 1164 | } else { |
355e7891 CY |
1165 | if (!f2fs_test_and_clear_bit(offset, se->cur_valid_map)) { |
1166 | #ifdef CONFIG_F2FS_CHECK_FS | |
1167 | if (!f2fs_test_and_clear_bit(offset, | |
1168 | se->cur_valid_map_mir)) | |
1169 | f2fs_bug_on(sbi, 1); | |
1170 | else | |
1171 | WARN_ON(1); | |
1172 | #else | |
05796763 | 1173 | f2fs_bug_on(sbi, 1); |
355e7891 CY |
1174 | #endif |
1175 | } | |
3e025740 JK |
1176 | if (f2fs_discard_en(sbi) && |
1177 | f2fs_test_and_clear_bit(offset, se->discard_map)) | |
a66cdd98 | 1178 | sbi->discard_blks++; |
351df4b2 JK |
1179 | } |
1180 | if (!f2fs_test_bit(offset, se->ckpt_valid_map)) | |
1181 | se->ckpt_valid_blocks += del; | |
1182 | ||
1183 | __mark_sit_entry_dirty(sbi, segno); | |
1184 | ||
1185 | /* update total number of valid blocks to be written in ckpt area */ | |
1186 | SIT_I(sbi)->written_valid_blocks += del; | |
1187 | ||
1188 | if (sbi->segs_per_sec > 1) | |
1189 | get_sec_entry(sbi, segno)->valid_blocks += del; | |
1190 | } | |
1191 | ||
5e443818 | 1192 | void refresh_sit_entry(struct f2fs_sb_info *sbi, block_t old, block_t new) |
351df4b2 | 1193 | { |
5e443818 JK |
1194 | update_sit_entry(sbi, new, 1); |
1195 | if (GET_SEGNO(sbi, old) != NULL_SEGNO) | |
1196 | update_sit_entry(sbi, old, -1); | |
1197 | ||
1198 | locate_dirty_segment(sbi, GET_SEGNO(sbi, old)); | |
1199 | locate_dirty_segment(sbi, GET_SEGNO(sbi, new)); | |
351df4b2 JK |
1200 | } |
1201 | ||
1202 | void invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr) | |
1203 | { | |
1204 | unsigned int segno = GET_SEGNO(sbi, addr); | |
1205 | struct sit_info *sit_i = SIT_I(sbi); | |
1206 | ||
9850cf4a | 1207 | f2fs_bug_on(sbi, addr == NULL_ADDR); |
351df4b2 JK |
1208 | if (addr == NEW_ADDR) |
1209 | return; | |
1210 | ||
1211 | /* add it into sit main buffer */ | |
1212 | mutex_lock(&sit_i->sentry_lock); | |
1213 | ||
1214 | update_sit_entry(sbi, addr, -1); | |
1215 | ||
1216 | /* add it into dirty seglist */ | |
1217 | locate_dirty_segment(sbi, segno); | |
1218 | ||
1219 | mutex_unlock(&sit_i->sentry_lock); | |
1220 | } | |
1221 | ||
6e2c64ad JK |
1222 | bool is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr) |
1223 | { | |
1224 | struct sit_info *sit_i = SIT_I(sbi); | |
1225 | unsigned int segno, offset; | |
1226 | struct seg_entry *se; | |
1227 | bool is_cp = false; | |
1228 | ||
1229 | if (blkaddr == NEW_ADDR || blkaddr == NULL_ADDR) | |
1230 | return true; | |
1231 | ||
1232 | mutex_lock(&sit_i->sentry_lock); | |
1233 | ||
1234 | segno = GET_SEGNO(sbi, blkaddr); | |
1235 | se = get_seg_entry(sbi, segno); | |
1236 | offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); | |
1237 | ||
1238 | if (f2fs_test_bit(offset, se->ckpt_valid_map)) | |
1239 | is_cp = true; | |
1240 | ||
1241 | mutex_unlock(&sit_i->sentry_lock); | |
1242 | ||
1243 | return is_cp; | |
1244 | } | |
1245 | ||
0a8165d7 | 1246 | /* |
351df4b2 JK |
1247 | * This function should be resided under the curseg_mutex lock |
1248 | */ | |
1249 | static void __add_sum_entry(struct f2fs_sb_info *sbi, int type, | |
e79efe3b | 1250 | struct f2fs_summary *sum) |
351df4b2 JK |
1251 | { |
1252 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1253 | void *addr = curseg->sum_blk; | |
e79efe3b | 1254 | addr += curseg->next_blkoff * sizeof(struct f2fs_summary); |
351df4b2 | 1255 | memcpy(addr, sum, sizeof(struct f2fs_summary)); |
351df4b2 JK |
1256 | } |
1257 | ||
0a8165d7 | 1258 | /* |
351df4b2 JK |
1259 | * Calculate the number of current summary pages for writing |
1260 | */ | |
3fa06d7b | 1261 | int npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra) |
351df4b2 | 1262 | { |
351df4b2 | 1263 | int valid_sum_count = 0; |
9a47938b | 1264 | int i, sum_in_page; |
351df4b2 JK |
1265 | |
1266 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
1267 | if (sbi->ckpt->alloc_type[i] == SSR) | |
1268 | valid_sum_count += sbi->blocks_per_seg; | |
3fa06d7b CY |
1269 | else { |
1270 | if (for_ra) | |
1271 | valid_sum_count += le16_to_cpu( | |
1272 | F2FS_CKPT(sbi)->cur_data_blkoff[i]); | |
1273 | else | |
1274 | valid_sum_count += curseg_blkoff(sbi, i); | |
1275 | } | |
351df4b2 JK |
1276 | } |
1277 | ||
09cbfeaf | 1278 | sum_in_page = (PAGE_SIZE - 2 * SUM_JOURNAL_SIZE - |
9a47938b FL |
1279 | SUM_FOOTER_SIZE) / SUMMARY_SIZE; |
1280 | if (valid_sum_count <= sum_in_page) | |
351df4b2 | 1281 | return 1; |
9a47938b | 1282 | else if ((valid_sum_count - sum_in_page) <= |
09cbfeaf | 1283 | (PAGE_SIZE - SUM_FOOTER_SIZE) / SUMMARY_SIZE) |
351df4b2 JK |
1284 | return 2; |
1285 | return 3; | |
1286 | } | |
1287 | ||
0a8165d7 | 1288 | /* |
351df4b2 JK |
1289 | * Caller should put this summary page |
1290 | */ | |
1291 | struct page *get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno) | |
1292 | { | |
1293 | return get_meta_page(sbi, GET_SUM_BLOCK(sbi, segno)); | |
1294 | } | |
1295 | ||
381722d2 | 1296 | void update_meta_page(struct f2fs_sb_info *sbi, void *src, block_t blk_addr) |
351df4b2 JK |
1297 | { |
1298 | struct page *page = grab_meta_page(sbi, blk_addr); | |
381722d2 CY |
1299 | void *dst = page_address(page); |
1300 | ||
1301 | if (src) | |
09cbfeaf | 1302 | memcpy(dst, src, PAGE_SIZE); |
381722d2 | 1303 | else |
09cbfeaf | 1304 | memset(dst, 0, PAGE_SIZE); |
351df4b2 JK |
1305 | set_page_dirty(page); |
1306 | f2fs_put_page(page, 1); | |
1307 | } | |
1308 | ||
381722d2 CY |
1309 | static void write_sum_page(struct f2fs_sb_info *sbi, |
1310 | struct f2fs_summary_block *sum_blk, block_t blk_addr) | |
1311 | { | |
1312 | update_meta_page(sbi, (void *)sum_blk, blk_addr); | |
1313 | } | |
1314 | ||
b7ad7512 CY |
1315 | static void write_current_sum_page(struct f2fs_sb_info *sbi, |
1316 | int type, block_t blk_addr) | |
1317 | { | |
1318 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1319 | struct page *page = grab_meta_page(sbi, blk_addr); | |
1320 | struct f2fs_summary_block *src = curseg->sum_blk; | |
1321 | struct f2fs_summary_block *dst; | |
1322 | ||
1323 | dst = (struct f2fs_summary_block *)page_address(page); | |
1324 | ||
1325 | mutex_lock(&curseg->curseg_mutex); | |
1326 | ||
1327 | down_read(&curseg->journal_rwsem); | |
1328 | memcpy(&dst->journal, curseg->journal, SUM_JOURNAL_SIZE); | |
1329 | up_read(&curseg->journal_rwsem); | |
1330 | ||
1331 | memcpy(dst->entries, src->entries, SUM_ENTRY_SIZE); | |
1332 | memcpy(&dst->footer, &src->footer, SUM_FOOTER_SIZE); | |
1333 | ||
1334 | mutex_unlock(&curseg->curseg_mutex); | |
1335 | ||
1336 | set_page_dirty(page); | |
1337 | f2fs_put_page(page, 1); | |
1338 | } | |
1339 | ||
0a8165d7 | 1340 | /* |
351df4b2 JK |
1341 | * Find a new segment from the free segments bitmap to right order |
1342 | * This function should be returned with success, otherwise BUG | |
1343 | */ | |
1344 | static void get_new_segment(struct f2fs_sb_info *sbi, | |
1345 | unsigned int *newseg, bool new_sec, int dir) | |
1346 | { | |
1347 | struct free_segmap_info *free_i = FREE_I(sbi); | |
351df4b2 | 1348 | unsigned int segno, secno, zoneno; |
7cd8558b | 1349 | unsigned int total_zones = MAIN_SECS(sbi) / sbi->secs_per_zone; |
351df4b2 JK |
1350 | unsigned int hint = *newseg / sbi->segs_per_sec; |
1351 | unsigned int old_zoneno = GET_ZONENO_FROM_SEGNO(sbi, *newseg); | |
1352 | unsigned int left_start = hint; | |
1353 | bool init = true; | |
1354 | int go_left = 0; | |
1355 | int i; | |
1356 | ||
1a118ccf | 1357 | spin_lock(&free_i->segmap_lock); |
351df4b2 JK |
1358 | |
1359 | if (!new_sec && ((*newseg + 1) % sbi->segs_per_sec)) { | |
1360 | segno = find_next_zero_bit(free_i->free_segmap, | |
0ab14356 CY |
1361 | (hint + 1) * sbi->segs_per_sec, *newseg + 1); |
1362 | if (segno < (hint + 1) * sbi->segs_per_sec) | |
351df4b2 JK |
1363 | goto got_it; |
1364 | } | |
1365 | find_other_zone: | |
7cd8558b JK |
1366 | secno = find_next_zero_bit(free_i->free_secmap, MAIN_SECS(sbi), hint); |
1367 | if (secno >= MAIN_SECS(sbi)) { | |
351df4b2 JK |
1368 | if (dir == ALLOC_RIGHT) { |
1369 | secno = find_next_zero_bit(free_i->free_secmap, | |
7cd8558b JK |
1370 | MAIN_SECS(sbi), 0); |
1371 | f2fs_bug_on(sbi, secno >= MAIN_SECS(sbi)); | |
351df4b2 JK |
1372 | } else { |
1373 | go_left = 1; | |
1374 | left_start = hint - 1; | |
1375 | } | |
1376 | } | |
1377 | if (go_left == 0) | |
1378 | goto skip_left; | |
1379 | ||
1380 | while (test_bit(left_start, free_i->free_secmap)) { | |
1381 | if (left_start > 0) { | |
1382 | left_start--; | |
1383 | continue; | |
1384 | } | |
1385 | left_start = find_next_zero_bit(free_i->free_secmap, | |
7cd8558b JK |
1386 | MAIN_SECS(sbi), 0); |
1387 | f2fs_bug_on(sbi, left_start >= MAIN_SECS(sbi)); | |
351df4b2 JK |
1388 | break; |
1389 | } | |
1390 | secno = left_start; | |
1391 | skip_left: | |
1392 | hint = secno; | |
1393 | segno = secno * sbi->segs_per_sec; | |
1394 | zoneno = secno / sbi->secs_per_zone; | |
1395 | ||
1396 | /* give up on finding another zone */ | |
1397 | if (!init) | |
1398 | goto got_it; | |
1399 | if (sbi->secs_per_zone == 1) | |
1400 | goto got_it; | |
1401 | if (zoneno == old_zoneno) | |
1402 | goto got_it; | |
1403 | if (dir == ALLOC_LEFT) { | |
1404 | if (!go_left && zoneno + 1 >= total_zones) | |
1405 | goto got_it; | |
1406 | if (go_left && zoneno == 0) | |
1407 | goto got_it; | |
1408 | } | |
1409 | for (i = 0; i < NR_CURSEG_TYPE; i++) | |
1410 | if (CURSEG_I(sbi, i)->zone == zoneno) | |
1411 | break; | |
1412 | ||
1413 | if (i < NR_CURSEG_TYPE) { | |
1414 | /* zone is in user, try another */ | |
1415 | if (go_left) | |
1416 | hint = zoneno * sbi->secs_per_zone - 1; | |
1417 | else if (zoneno + 1 >= total_zones) | |
1418 | hint = 0; | |
1419 | else | |
1420 | hint = (zoneno + 1) * sbi->secs_per_zone; | |
1421 | init = false; | |
1422 | goto find_other_zone; | |
1423 | } | |
1424 | got_it: | |
1425 | /* set it as dirty segment in free segmap */ | |
9850cf4a | 1426 | f2fs_bug_on(sbi, test_bit(segno, free_i->free_segmap)); |
351df4b2 JK |
1427 | __set_inuse(sbi, segno); |
1428 | *newseg = segno; | |
1a118ccf | 1429 | spin_unlock(&free_i->segmap_lock); |
351df4b2 JK |
1430 | } |
1431 | ||
1432 | static void reset_curseg(struct f2fs_sb_info *sbi, int type, int modified) | |
1433 | { | |
1434 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1435 | struct summary_footer *sum_footer; | |
1436 | ||
1437 | curseg->segno = curseg->next_segno; | |
1438 | curseg->zone = GET_ZONENO_FROM_SEGNO(sbi, curseg->segno); | |
1439 | curseg->next_blkoff = 0; | |
1440 | curseg->next_segno = NULL_SEGNO; | |
1441 | ||
1442 | sum_footer = &(curseg->sum_blk->footer); | |
1443 | memset(sum_footer, 0, sizeof(struct summary_footer)); | |
1444 | if (IS_DATASEG(type)) | |
1445 | SET_SUM_TYPE(sum_footer, SUM_TYPE_DATA); | |
1446 | if (IS_NODESEG(type)) | |
1447 | SET_SUM_TYPE(sum_footer, SUM_TYPE_NODE); | |
1448 | __set_sit_entry_type(sbi, type, curseg->segno, modified); | |
1449 | } | |
1450 | ||
0a8165d7 | 1451 | /* |
351df4b2 JK |
1452 | * Allocate a current working segment. |
1453 | * This function always allocates a free segment in LFS manner. | |
1454 | */ | |
1455 | static void new_curseg(struct f2fs_sb_info *sbi, int type, bool new_sec) | |
1456 | { | |
1457 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1458 | unsigned int segno = curseg->segno; | |
1459 | int dir = ALLOC_LEFT; | |
1460 | ||
1461 | write_sum_page(sbi, curseg->sum_blk, | |
81fb5e87 | 1462 | GET_SUM_BLOCK(sbi, segno)); |
351df4b2 JK |
1463 | if (type == CURSEG_WARM_DATA || type == CURSEG_COLD_DATA) |
1464 | dir = ALLOC_RIGHT; | |
1465 | ||
1466 | if (test_opt(sbi, NOHEAP)) | |
1467 | dir = ALLOC_RIGHT; | |
1468 | ||
1469 | get_new_segment(sbi, &segno, new_sec, dir); | |
1470 | curseg->next_segno = segno; | |
1471 | reset_curseg(sbi, type, 1); | |
1472 | curseg->alloc_type = LFS; | |
1473 | } | |
1474 | ||
1475 | static void __next_free_blkoff(struct f2fs_sb_info *sbi, | |
1476 | struct curseg_info *seg, block_t start) | |
1477 | { | |
1478 | struct seg_entry *se = get_seg_entry(sbi, seg->segno); | |
e81c93cf | 1479 | int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long); |
60a3b782 | 1480 | unsigned long *target_map = SIT_I(sbi)->tmp_map; |
e81c93cf CL |
1481 | unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map; |
1482 | unsigned long *cur_map = (unsigned long *)se->cur_valid_map; | |
1483 | int i, pos; | |
1484 | ||
1485 | for (i = 0; i < entries; i++) | |
1486 | target_map[i] = ckpt_map[i] | cur_map[i]; | |
1487 | ||
1488 | pos = __find_rev_next_zero_bit(target_map, sbi->blocks_per_seg, start); | |
1489 | ||
1490 | seg->next_blkoff = pos; | |
351df4b2 JK |
1491 | } |
1492 | ||
0a8165d7 | 1493 | /* |
351df4b2 JK |
1494 | * If a segment is written by LFS manner, next block offset is just obtained |
1495 | * by increasing the current block offset. However, if a segment is written by | |
1496 | * SSR manner, next block offset obtained by calling __next_free_blkoff | |
1497 | */ | |
1498 | static void __refresh_next_blkoff(struct f2fs_sb_info *sbi, | |
1499 | struct curseg_info *seg) | |
1500 | { | |
1501 | if (seg->alloc_type == SSR) | |
1502 | __next_free_blkoff(sbi, seg, seg->next_blkoff + 1); | |
1503 | else | |
1504 | seg->next_blkoff++; | |
1505 | } | |
1506 | ||
0a8165d7 | 1507 | /* |
e1c42045 | 1508 | * This function always allocates a used segment(from dirty seglist) by SSR |
351df4b2 JK |
1509 | * manner, so it should recover the existing segment information of valid blocks |
1510 | */ | |
1511 | static void change_curseg(struct f2fs_sb_info *sbi, int type, bool reuse) | |
1512 | { | |
1513 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
1514 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1515 | unsigned int new_segno = curseg->next_segno; | |
1516 | struct f2fs_summary_block *sum_node; | |
1517 | struct page *sum_page; | |
1518 | ||
1519 | write_sum_page(sbi, curseg->sum_blk, | |
1520 | GET_SUM_BLOCK(sbi, curseg->segno)); | |
1521 | __set_test_and_inuse(sbi, new_segno); | |
1522 | ||
1523 | mutex_lock(&dirty_i->seglist_lock); | |
1524 | __remove_dirty_segment(sbi, new_segno, PRE); | |
1525 | __remove_dirty_segment(sbi, new_segno, DIRTY); | |
1526 | mutex_unlock(&dirty_i->seglist_lock); | |
1527 | ||
1528 | reset_curseg(sbi, type, 1); | |
1529 | curseg->alloc_type = SSR; | |
1530 | __next_free_blkoff(sbi, curseg, 0); | |
1531 | ||
1532 | if (reuse) { | |
1533 | sum_page = get_sum_page(sbi, new_segno); | |
1534 | sum_node = (struct f2fs_summary_block *)page_address(sum_page); | |
1535 | memcpy(curseg->sum_blk, sum_node, SUM_ENTRY_SIZE); | |
1536 | f2fs_put_page(sum_page, 1); | |
1537 | } | |
1538 | } | |
1539 | ||
43727527 JK |
1540 | static int get_ssr_segment(struct f2fs_sb_info *sbi, int type) |
1541 | { | |
1542 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1543 | const struct victim_selection *v_ops = DIRTY_I(sbi)->v_ops; | |
d27c3d89 CY |
1544 | int i, cnt; |
1545 | bool reversed = false; | |
c192f7a4 JK |
1546 | |
1547 | /* need_SSR() already forces to do this */ | |
1548 | if (v_ops->get_victim(sbi, &(curseg)->next_segno, BG_GC, type, SSR)) | |
1549 | return 1; | |
43727527 | 1550 | |
70d625cb JK |
1551 | /* For node segments, let's do SSR more intensively */ |
1552 | if (IS_NODESEG(type)) { | |
d27c3d89 CY |
1553 | if (type >= CURSEG_WARM_NODE) { |
1554 | reversed = true; | |
1555 | i = CURSEG_COLD_NODE; | |
1556 | } else { | |
1557 | i = CURSEG_HOT_NODE; | |
1558 | } | |
1559 | cnt = NR_CURSEG_NODE_TYPE; | |
70d625cb | 1560 | } else { |
d27c3d89 CY |
1561 | if (type >= CURSEG_WARM_DATA) { |
1562 | reversed = true; | |
1563 | i = CURSEG_COLD_DATA; | |
1564 | } else { | |
1565 | i = CURSEG_HOT_DATA; | |
1566 | } | |
1567 | cnt = NR_CURSEG_DATA_TYPE; | |
70d625cb | 1568 | } |
43727527 | 1569 | |
d27c3d89 | 1570 | for (; cnt-- > 0; reversed ? i-- : i++) { |
c192f7a4 JK |
1571 | if (i == type) |
1572 | continue; | |
43727527 | 1573 | if (v_ops->get_victim(sbi, &(curseg)->next_segno, |
c192f7a4 | 1574 | BG_GC, i, SSR)) |
43727527 | 1575 | return 1; |
c192f7a4 | 1576 | } |
43727527 JK |
1577 | return 0; |
1578 | } | |
1579 | ||
351df4b2 JK |
1580 | /* |
1581 | * flush out current segment and replace it with new segment | |
1582 | * This function should be returned with success, otherwise BUG | |
1583 | */ | |
1584 | static void allocate_segment_by_default(struct f2fs_sb_info *sbi, | |
1585 | int type, bool force) | |
1586 | { | |
7b405275 | 1587 | if (force) |
351df4b2 | 1588 | new_curseg(sbi, type, true); |
5b6c6be2 JK |
1589 | else if (!is_set_ckpt_flags(sbi, CP_CRC_RECOVERY_FLAG) && |
1590 | type == CURSEG_WARM_NODE) | |
351df4b2 JK |
1591 | new_curseg(sbi, type, false); |
1592 | else if (need_SSR(sbi) && get_ssr_segment(sbi, type)) | |
1593 | change_curseg(sbi, type, true); | |
1594 | else | |
1595 | new_curseg(sbi, type, false); | |
dcdfff65 | 1596 | |
d0db7703 | 1597 | stat_inc_seg_type(sbi, CURSEG_I(sbi, type)); |
351df4b2 JK |
1598 | } |
1599 | ||
1600 | void allocate_new_segments(struct f2fs_sb_info *sbi) | |
1601 | { | |
6ae1be13 JK |
1602 | struct curseg_info *curseg; |
1603 | unsigned int old_segno; | |
351df4b2 JK |
1604 | int i; |
1605 | ||
6ae1be13 JK |
1606 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { |
1607 | curseg = CURSEG_I(sbi, i); | |
1608 | old_segno = curseg->segno; | |
1609 | SIT_I(sbi)->s_ops->allocate_segment(sbi, i, true); | |
1610 | locate_dirty_segment(sbi, old_segno); | |
1611 | } | |
351df4b2 JK |
1612 | } |
1613 | ||
1614 | static const struct segment_allocation default_salloc_ops = { | |
1615 | .allocate_segment = allocate_segment_by_default, | |
1616 | }; | |
1617 | ||
25290fa5 JK |
1618 | bool exist_trim_candidates(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
1619 | { | |
1620 | __u64 trim_start = cpc->trim_start; | |
1621 | bool has_candidate = false; | |
1622 | ||
1623 | mutex_lock(&SIT_I(sbi)->sentry_lock); | |
1624 | for (; cpc->trim_start <= cpc->trim_end; cpc->trim_start++) { | |
1625 | if (add_discard_addrs(sbi, cpc, true)) { | |
1626 | has_candidate = true; | |
1627 | break; | |
1628 | } | |
1629 | } | |
1630 | mutex_unlock(&SIT_I(sbi)->sentry_lock); | |
1631 | ||
1632 | cpc->trim_start = trim_start; | |
1633 | return has_candidate; | |
1634 | } | |
1635 | ||
4b2fecc8 JK |
1636 | int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range) |
1637 | { | |
f7ef9b83 JK |
1638 | __u64 start = F2FS_BYTES_TO_BLK(range->start); |
1639 | __u64 end = start + F2FS_BYTES_TO_BLK(range->len) - 1; | |
4b2fecc8 JK |
1640 | unsigned int start_segno, end_segno; |
1641 | struct cp_control cpc; | |
c34f42e2 | 1642 | int err = 0; |
4b2fecc8 | 1643 | |
836b5a63 | 1644 | if (start >= MAX_BLKADDR(sbi) || range->len < sbi->blocksize) |
4b2fecc8 JK |
1645 | return -EINVAL; |
1646 | ||
9bd27ae4 | 1647 | cpc.trimmed = 0; |
7cd8558b | 1648 | if (end <= MAIN_BLKADDR(sbi)) |
4b2fecc8 JK |
1649 | goto out; |
1650 | ||
ed214a11 YH |
1651 | if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) { |
1652 | f2fs_msg(sbi->sb, KERN_WARNING, | |
1653 | "Found FS corruption, run fsck to fix."); | |
1654 | goto out; | |
1655 | } | |
1656 | ||
4b2fecc8 | 1657 | /* start/end segment number in main_area */ |
7cd8558b JK |
1658 | start_segno = (start <= MAIN_BLKADDR(sbi)) ? 0 : GET_SEGNO(sbi, start); |
1659 | end_segno = (end >= MAX_BLKADDR(sbi)) ? MAIN_SEGS(sbi) - 1 : | |
1660 | GET_SEGNO(sbi, end); | |
4b2fecc8 | 1661 | cpc.reason = CP_DISCARD; |
836b5a63 | 1662 | cpc.trim_minlen = max_t(__u64, 1, F2FS_BYTES_TO_BLK(range->minlen)); |
4b2fecc8 JK |
1663 | |
1664 | /* do checkpoint to issue discard commands safely */ | |
bba681cb JK |
1665 | for (; start_segno <= end_segno; start_segno = cpc.trim_end + 1) { |
1666 | cpc.trim_start = start_segno; | |
a66cdd98 JK |
1667 | |
1668 | if (sbi->discard_blks == 0) | |
1669 | break; | |
1670 | else if (sbi->discard_blks < BATCHED_TRIM_BLOCKS(sbi)) | |
1671 | cpc.trim_end = end_segno; | |
1672 | else | |
1673 | cpc.trim_end = min_t(unsigned int, | |
1674 | rounddown(start_segno + | |
bba681cb JK |
1675 | BATCHED_TRIM_SEGMENTS(sbi), |
1676 | sbi->segs_per_sec) - 1, end_segno); | |
1677 | ||
1678 | mutex_lock(&sbi->gc_mutex); | |
c34f42e2 | 1679 | err = write_checkpoint(sbi, &cpc); |
bba681cb | 1680 | mutex_unlock(&sbi->gc_mutex); |
e9328353 CY |
1681 | if (err) |
1682 | break; | |
74fa5f3d CY |
1683 | |
1684 | schedule(); | |
bba681cb | 1685 | } |
4b2fecc8 | 1686 | out: |
f7ef9b83 | 1687 | range->len = F2FS_BLK_TO_BYTES(cpc.trimmed); |
c34f42e2 | 1688 | return err; |
4b2fecc8 JK |
1689 | } |
1690 | ||
351df4b2 JK |
1691 | static bool __has_curseg_space(struct f2fs_sb_info *sbi, int type) |
1692 | { | |
1693 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1694 | if (curseg->next_blkoff < sbi->blocks_per_seg) | |
1695 | return true; | |
1696 | return false; | |
1697 | } | |
1698 | ||
1699 | static int __get_segment_type_2(struct page *page, enum page_type p_type) | |
1700 | { | |
1701 | if (p_type == DATA) | |
1702 | return CURSEG_HOT_DATA; | |
1703 | else | |
1704 | return CURSEG_HOT_NODE; | |
1705 | } | |
1706 | ||
1707 | static int __get_segment_type_4(struct page *page, enum page_type p_type) | |
1708 | { | |
1709 | if (p_type == DATA) { | |
1710 | struct inode *inode = page->mapping->host; | |
1711 | ||
1712 | if (S_ISDIR(inode->i_mode)) | |
1713 | return CURSEG_HOT_DATA; | |
1714 | else | |
1715 | return CURSEG_COLD_DATA; | |
1716 | } else { | |
a344b9fd JK |
1717 | if (IS_DNODE(page) && is_cold_node(page)) |
1718 | return CURSEG_WARM_NODE; | |
351df4b2 JK |
1719 | else |
1720 | return CURSEG_COLD_NODE; | |
1721 | } | |
1722 | } | |
1723 | ||
1724 | static int __get_segment_type_6(struct page *page, enum page_type p_type) | |
1725 | { | |
1726 | if (p_type == DATA) { | |
1727 | struct inode *inode = page->mapping->host; | |
1728 | ||
1729 | if (S_ISDIR(inode->i_mode)) | |
1730 | return CURSEG_HOT_DATA; | |
354a3399 | 1731 | else if (is_cold_data(page) || file_is_cold(inode)) |
351df4b2 JK |
1732 | return CURSEG_COLD_DATA; |
1733 | else | |
1734 | return CURSEG_WARM_DATA; | |
1735 | } else { | |
1736 | if (IS_DNODE(page)) | |
1737 | return is_cold_node(page) ? CURSEG_WARM_NODE : | |
1738 | CURSEG_HOT_NODE; | |
1739 | else | |
1740 | return CURSEG_COLD_NODE; | |
1741 | } | |
1742 | } | |
1743 | ||
1744 | static int __get_segment_type(struct page *page, enum page_type p_type) | |
1745 | { | |
4081363f | 1746 | switch (F2FS_P_SB(page)->active_logs) { |
351df4b2 JK |
1747 | case 2: |
1748 | return __get_segment_type_2(page, p_type); | |
1749 | case 4: | |
1750 | return __get_segment_type_4(page, p_type); | |
351df4b2 | 1751 | } |
12a67146 | 1752 | /* NR_CURSEG_TYPE(6) logs by default */ |
9850cf4a JK |
1753 | f2fs_bug_on(F2FS_P_SB(page), |
1754 | F2FS_P_SB(page)->active_logs != NR_CURSEG_TYPE); | |
12a67146 | 1755 | return __get_segment_type_6(page, p_type); |
351df4b2 JK |
1756 | } |
1757 | ||
bfad7c2d JK |
1758 | void allocate_data_block(struct f2fs_sb_info *sbi, struct page *page, |
1759 | block_t old_blkaddr, block_t *new_blkaddr, | |
1760 | struct f2fs_summary *sum, int type) | |
351df4b2 JK |
1761 | { |
1762 | struct sit_info *sit_i = SIT_I(sbi); | |
6ae1be13 | 1763 | struct curseg_info *curseg = CURSEG_I(sbi, type); |
351df4b2 JK |
1764 | |
1765 | mutex_lock(&curseg->curseg_mutex); | |
21cb1d99 | 1766 | mutex_lock(&sit_i->sentry_lock); |
351df4b2 JK |
1767 | |
1768 | *new_blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); | |
351df4b2 | 1769 | |
4e6a8d9b JK |
1770 | f2fs_wait_discard_bio(sbi, *new_blkaddr); |
1771 | ||
351df4b2 JK |
1772 | /* |
1773 | * __add_sum_entry should be resided under the curseg_mutex | |
1774 | * because, this function updates a summary entry in the | |
1775 | * current summary block. | |
1776 | */ | |
e79efe3b | 1777 | __add_sum_entry(sbi, type, sum); |
351df4b2 | 1778 | |
351df4b2 | 1779 | __refresh_next_blkoff(sbi, curseg); |
dcdfff65 JK |
1780 | |
1781 | stat_inc_block_count(sbi, curseg); | |
351df4b2 JK |
1782 | |
1783 | /* | |
1784 | * SIT information should be updated before segment allocation, | |
1785 | * since SSR needs latest valid block information. | |
1786 | */ | |
1787 | refresh_sit_entry(sbi, old_blkaddr, *new_blkaddr); | |
5e443818 | 1788 | |
3436c4bd YS |
1789 | if (!__has_curseg_space(sbi, type)) |
1790 | sit_i->s_ops->allocate_segment(sbi, type, false); | |
1791 | ||
351df4b2 JK |
1792 | mutex_unlock(&sit_i->sentry_lock); |
1793 | ||
bfad7c2d | 1794 | if (page && IS_NODESEG(type)) |
351df4b2 JK |
1795 | fill_node_footer_blkaddr(page, NEXT_FREE_BLKADDR(sbi, curseg)); |
1796 | ||
bfad7c2d JK |
1797 | mutex_unlock(&curseg->curseg_mutex); |
1798 | } | |
1799 | ||
05ca3632 | 1800 | static void do_write_page(struct f2fs_summary *sum, struct f2fs_io_info *fio) |
bfad7c2d | 1801 | { |
05ca3632 | 1802 | int type = __get_segment_type(fio->page, fio->type); |
0a595eba | 1803 | int err; |
bfad7c2d | 1804 | |
7dfeaa32 JK |
1805 | if (fio->type == NODE || fio->type == DATA) |
1806 | mutex_lock(&fio->sbi->wio_mutex[fio->type]); | |
0a595eba | 1807 | reallocate: |
7a9d7548 CY |
1808 | allocate_data_block(fio->sbi, fio->page, fio->old_blkaddr, |
1809 | &fio->new_blkaddr, sum, type); | |
bfad7c2d | 1810 | |
351df4b2 | 1811 | /* writeout dirty page into bdev */ |
0a595eba JK |
1812 | err = f2fs_submit_page_mbio(fio); |
1813 | if (err == -EAGAIN) { | |
1814 | fio->old_blkaddr = fio->new_blkaddr; | |
1815 | goto reallocate; | |
1816 | } | |
7dfeaa32 JK |
1817 | |
1818 | if (fio->type == NODE || fio->type == DATA) | |
1819 | mutex_unlock(&fio->sbi->wio_mutex[fio->type]); | |
351df4b2 JK |
1820 | } |
1821 | ||
577e3495 | 1822 | void write_meta_page(struct f2fs_sb_info *sbi, struct page *page) |
351df4b2 | 1823 | { |
458e6197 | 1824 | struct f2fs_io_info fio = { |
05ca3632 | 1825 | .sbi = sbi, |
458e6197 | 1826 | .type = META, |
04d328de | 1827 | .op = REQ_OP_WRITE, |
70fd7614 | 1828 | .op_flags = REQ_SYNC | REQ_META | REQ_PRIO, |
7a9d7548 CY |
1829 | .old_blkaddr = page->index, |
1830 | .new_blkaddr = page->index, | |
05ca3632 | 1831 | .page = page, |
4375a336 | 1832 | .encrypted_page = NULL, |
458e6197 JK |
1833 | }; |
1834 | ||
2b947003 | 1835 | if (unlikely(page->index >= MAIN_BLKADDR(sbi))) |
04d328de | 1836 | fio.op_flags &= ~REQ_META; |
2b947003 | 1837 | |
351df4b2 | 1838 | set_page_writeback(page); |
05ca3632 | 1839 | f2fs_submit_page_mbio(&fio); |
351df4b2 JK |
1840 | } |
1841 | ||
05ca3632 | 1842 | void write_node_page(unsigned int nid, struct f2fs_io_info *fio) |
351df4b2 JK |
1843 | { |
1844 | struct f2fs_summary sum; | |
05ca3632 | 1845 | |
351df4b2 | 1846 | set_summary(&sum, nid, 0, 0); |
05ca3632 | 1847 | do_write_page(&sum, fio); |
351df4b2 JK |
1848 | } |
1849 | ||
05ca3632 | 1850 | void write_data_page(struct dnode_of_data *dn, struct f2fs_io_info *fio) |
351df4b2 | 1851 | { |
05ca3632 | 1852 | struct f2fs_sb_info *sbi = fio->sbi; |
351df4b2 JK |
1853 | struct f2fs_summary sum; |
1854 | struct node_info ni; | |
1855 | ||
9850cf4a | 1856 | f2fs_bug_on(sbi, dn->data_blkaddr == NULL_ADDR); |
351df4b2 JK |
1857 | get_node_info(sbi, dn->nid, &ni); |
1858 | set_summary(&sum, dn->nid, dn->ofs_in_node, ni.version); | |
05ca3632 | 1859 | do_write_page(&sum, fio); |
f28b3434 | 1860 | f2fs_update_data_blkaddr(dn, fio->new_blkaddr); |
351df4b2 JK |
1861 | } |
1862 | ||
05ca3632 | 1863 | void rewrite_data_page(struct f2fs_io_info *fio) |
351df4b2 | 1864 | { |
7a9d7548 | 1865 | fio->new_blkaddr = fio->old_blkaddr; |
05ca3632 JK |
1866 | stat_inc_inplace_blocks(fio->sbi); |
1867 | f2fs_submit_page_mbio(fio); | |
351df4b2 JK |
1868 | } |
1869 | ||
4356e48e | 1870 | void __f2fs_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum, |
19f106bc | 1871 | block_t old_blkaddr, block_t new_blkaddr, |
28bc106b | 1872 | bool recover_curseg, bool recover_newaddr) |
351df4b2 JK |
1873 | { |
1874 | struct sit_info *sit_i = SIT_I(sbi); | |
1875 | struct curseg_info *curseg; | |
1876 | unsigned int segno, old_cursegno; | |
1877 | struct seg_entry *se; | |
1878 | int type; | |
19f106bc | 1879 | unsigned short old_blkoff; |
351df4b2 JK |
1880 | |
1881 | segno = GET_SEGNO(sbi, new_blkaddr); | |
1882 | se = get_seg_entry(sbi, segno); | |
1883 | type = se->type; | |
1884 | ||
19f106bc CY |
1885 | if (!recover_curseg) { |
1886 | /* for recovery flow */ | |
1887 | if (se->valid_blocks == 0 && !IS_CURSEG(sbi, segno)) { | |
1888 | if (old_blkaddr == NULL_ADDR) | |
1889 | type = CURSEG_COLD_DATA; | |
1890 | else | |
1891 | type = CURSEG_WARM_DATA; | |
1892 | } | |
1893 | } else { | |
1894 | if (!IS_CURSEG(sbi, segno)) | |
351df4b2 JK |
1895 | type = CURSEG_WARM_DATA; |
1896 | } | |
19f106bc | 1897 | |
351df4b2 JK |
1898 | curseg = CURSEG_I(sbi, type); |
1899 | ||
1900 | mutex_lock(&curseg->curseg_mutex); | |
1901 | mutex_lock(&sit_i->sentry_lock); | |
1902 | ||
1903 | old_cursegno = curseg->segno; | |
19f106bc | 1904 | old_blkoff = curseg->next_blkoff; |
351df4b2 JK |
1905 | |
1906 | /* change the current segment */ | |
1907 | if (segno != curseg->segno) { | |
1908 | curseg->next_segno = segno; | |
1909 | change_curseg(sbi, type, true); | |
1910 | } | |
1911 | ||
491c0854 | 1912 | curseg->next_blkoff = GET_BLKOFF_FROM_SEG0(sbi, new_blkaddr); |
e79efe3b | 1913 | __add_sum_entry(sbi, type, sum); |
351df4b2 | 1914 | |
28bc106b | 1915 | if (!recover_curseg || recover_newaddr) |
6e2c64ad JK |
1916 | update_sit_entry(sbi, new_blkaddr, 1); |
1917 | if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) | |
1918 | update_sit_entry(sbi, old_blkaddr, -1); | |
1919 | ||
1920 | locate_dirty_segment(sbi, GET_SEGNO(sbi, old_blkaddr)); | |
1921 | locate_dirty_segment(sbi, GET_SEGNO(sbi, new_blkaddr)); | |
1922 | ||
351df4b2 | 1923 | locate_dirty_segment(sbi, old_cursegno); |
351df4b2 | 1924 | |
19f106bc CY |
1925 | if (recover_curseg) { |
1926 | if (old_cursegno != curseg->segno) { | |
1927 | curseg->next_segno = old_cursegno; | |
1928 | change_curseg(sbi, type, true); | |
1929 | } | |
1930 | curseg->next_blkoff = old_blkoff; | |
1931 | } | |
1932 | ||
351df4b2 JK |
1933 | mutex_unlock(&sit_i->sentry_lock); |
1934 | mutex_unlock(&curseg->curseg_mutex); | |
1935 | } | |
1936 | ||
528e3459 CY |
1937 | void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn, |
1938 | block_t old_addr, block_t new_addr, | |
28bc106b CY |
1939 | unsigned char version, bool recover_curseg, |
1940 | bool recover_newaddr) | |
528e3459 CY |
1941 | { |
1942 | struct f2fs_summary sum; | |
1943 | ||
1944 | set_summary(&sum, dn->nid, dn->ofs_in_node, version); | |
1945 | ||
28bc106b CY |
1946 | __f2fs_replace_block(sbi, &sum, old_addr, new_addr, |
1947 | recover_curseg, recover_newaddr); | |
528e3459 | 1948 | |
f28b3434 | 1949 | f2fs_update_data_blkaddr(dn, new_addr); |
528e3459 CY |
1950 | } |
1951 | ||
93dfe2ac | 1952 | void f2fs_wait_on_page_writeback(struct page *page, |
fec1d657 | 1953 | enum page_type type, bool ordered) |
93dfe2ac | 1954 | { |
93dfe2ac | 1955 | if (PageWriteback(page)) { |
4081363f JK |
1956 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); |
1957 | ||
942fd319 JK |
1958 | f2fs_submit_merged_bio_cond(sbi, page->mapping->host, |
1959 | 0, page->index, type, WRITE); | |
fec1d657 JK |
1960 | if (ordered) |
1961 | wait_on_page_writeback(page); | |
1962 | else | |
1963 | wait_for_stable_page(page); | |
93dfe2ac JK |
1964 | } |
1965 | } | |
1966 | ||
08b39fbd CY |
1967 | void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info *sbi, |
1968 | block_t blkaddr) | |
1969 | { | |
1970 | struct page *cpage; | |
1971 | ||
5d4c0af4 | 1972 | if (blkaddr == NEW_ADDR || blkaddr == NULL_ADDR) |
08b39fbd CY |
1973 | return; |
1974 | ||
08b39fbd CY |
1975 | cpage = find_lock_page(META_MAPPING(sbi), blkaddr); |
1976 | if (cpage) { | |
fec1d657 | 1977 | f2fs_wait_on_page_writeback(cpage, DATA, true); |
08b39fbd CY |
1978 | f2fs_put_page(cpage, 1); |
1979 | } | |
1980 | } | |
1981 | ||
351df4b2 JK |
1982 | static int read_compacted_summaries(struct f2fs_sb_info *sbi) |
1983 | { | |
1984 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1985 | struct curseg_info *seg_i; | |
1986 | unsigned char *kaddr; | |
1987 | struct page *page; | |
1988 | block_t start; | |
1989 | int i, j, offset; | |
1990 | ||
1991 | start = start_sum_block(sbi); | |
1992 | ||
1993 | page = get_meta_page(sbi, start++); | |
1994 | kaddr = (unsigned char *)page_address(page); | |
1995 | ||
1996 | /* Step 1: restore nat cache */ | |
1997 | seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
b7ad7512 | 1998 | memcpy(seg_i->journal, kaddr, SUM_JOURNAL_SIZE); |
351df4b2 JK |
1999 | |
2000 | /* Step 2: restore sit cache */ | |
2001 | seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 2002 | memcpy(seg_i->journal, kaddr + SUM_JOURNAL_SIZE, SUM_JOURNAL_SIZE); |
351df4b2 JK |
2003 | offset = 2 * SUM_JOURNAL_SIZE; |
2004 | ||
2005 | /* Step 3: restore summary entries */ | |
2006 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
2007 | unsigned short blk_off; | |
2008 | unsigned int segno; | |
2009 | ||
2010 | seg_i = CURSEG_I(sbi, i); | |
2011 | segno = le32_to_cpu(ckpt->cur_data_segno[i]); | |
2012 | blk_off = le16_to_cpu(ckpt->cur_data_blkoff[i]); | |
2013 | seg_i->next_segno = segno; | |
2014 | reset_curseg(sbi, i, 0); | |
2015 | seg_i->alloc_type = ckpt->alloc_type[i]; | |
2016 | seg_i->next_blkoff = blk_off; | |
2017 | ||
2018 | if (seg_i->alloc_type == SSR) | |
2019 | blk_off = sbi->blocks_per_seg; | |
2020 | ||
2021 | for (j = 0; j < blk_off; j++) { | |
2022 | struct f2fs_summary *s; | |
2023 | s = (struct f2fs_summary *)(kaddr + offset); | |
2024 | seg_i->sum_blk->entries[j] = *s; | |
2025 | offset += SUMMARY_SIZE; | |
09cbfeaf | 2026 | if (offset + SUMMARY_SIZE <= PAGE_SIZE - |
351df4b2 JK |
2027 | SUM_FOOTER_SIZE) |
2028 | continue; | |
2029 | ||
2030 | f2fs_put_page(page, 1); | |
2031 | page = NULL; | |
2032 | ||
2033 | page = get_meta_page(sbi, start++); | |
2034 | kaddr = (unsigned char *)page_address(page); | |
2035 | offset = 0; | |
2036 | } | |
2037 | } | |
2038 | f2fs_put_page(page, 1); | |
2039 | return 0; | |
2040 | } | |
2041 | ||
2042 | static int read_normal_summaries(struct f2fs_sb_info *sbi, int type) | |
2043 | { | |
2044 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
2045 | struct f2fs_summary_block *sum; | |
2046 | struct curseg_info *curseg; | |
2047 | struct page *new; | |
2048 | unsigned short blk_off; | |
2049 | unsigned int segno = 0; | |
2050 | block_t blk_addr = 0; | |
2051 | ||
2052 | /* get segment number and block addr */ | |
2053 | if (IS_DATASEG(type)) { | |
2054 | segno = le32_to_cpu(ckpt->cur_data_segno[type]); | |
2055 | blk_off = le16_to_cpu(ckpt->cur_data_blkoff[type - | |
2056 | CURSEG_HOT_DATA]); | |
119ee914 | 2057 | if (__exist_node_summaries(sbi)) |
351df4b2 JK |
2058 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_TYPE, type); |
2059 | else | |
2060 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_DATA_TYPE, type); | |
2061 | } else { | |
2062 | segno = le32_to_cpu(ckpt->cur_node_segno[type - | |
2063 | CURSEG_HOT_NODE]); | |
2064 | blk_off = le16_to_cpu(ckpt->cur_node_blkoff[type - | |
2065 | CURSEG_HOT_NODE]); | |
119ee914 | 2066 | if (__exist_node_summaries(sbi)) |
351df4b2 JK |
2067 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_NODE_TYPE, |
2068 | type - CURSEG_HOT_NODE); | |
2069 | else | |
2070 | blk_addr = GET_SUM_BLOCK(sbi, segno); | |
2071 | } | |
2072 | ||
2073 | new = get_meta_page(sbi, blk_addr); | |
2074 | sum = (struct f2fs_summary_block *)page_address(new); | |
2075 | ||
2076 | if (IS_NODESEG(type)) { | |
119ee914 | 2077 | if (__exist_node_summaries(sbi)) { |
351df4b2 JK |
2078 | struct f2fs_summary *ns = &sum->entries[0]; |
2079 | int i; | |
2080 | for (i = 0; i < sbi->blocks_per_seg; i++, ns++) { | |
2081 | ns->version = 0; | |
2082 | ns->ofs_in_node = 0; | |
2083 | } | |
2084 | } else { | |
d653788a GZ |
2085 | int err; |
2086 | ||
2087 | err = restore_node_summary(sbi, segno, sum); | |
2088 | if (err) { | |
351df4b2 | 2089 | f2fs_put_page(new, 1); |
d653788a | 2090 | return err; |
351df4b2 JK |
2091 | } |
2092 | } | |
2093 | } | |
2094 | ||
2095 | /* set uncompleted segment to curseg */ | |
2096 | curseg = CURSEG_I(sbi, type); | |
2097 | mutex_lock(&curseg->curseg_mutex); | |
b7ad7512 CY |
2098 | |
2099 | /* update journal info */ | |
2100 | down_write(&curseg->journal_rwsem); | |
2101 | memcpy(curseg->journal, &sum->journal, SUM_JOURNAL_SIZE); | |
2102 | up_write(&curseg->journal_rwsem); | |
2103 | ||
2104 | memcpy(curseg->sum_blk->entries, sum->entries, SUM_ENTRY_SIZE); | |
2105 | memcpy(&curseg->sum_blk->footer, &sum->footer, SUM_FOOTER_SIZE); | |
351df4b2 JK |
2106 | curseg->next_segno = segno; |
2107 | reset_curseg(sbi, type, 0); | |
2108 | curseg->alloc_type = ckpt->alloc_type[type]; | |
2109 | curseg->next_blkoff = blk_off; | |
2110 | mutex_unlock(&curseg->curseg_mutex); | |
2111 | f2fs_put_page(new, 1); | |
2112 | return 0; | |
2113 | } | |
2114 | ||
2115 | static int restore_curseg_summaries(struct f2fs_sb_info *sbi) | |
2116 | { | |
2117 | int type = CURSEG_HOT_DATA; | |
e4fc5fbf | 2118 | int err; |
351df4b2 | 2119 | |
aaec2b1d | 2120 | if (is_set_ckpt_flags(sbi, CP_COMPACT_SUM_FLAG)) { |
3fa06d7b CY |
2121 | int npages = npages_for_summary_flush(sbi, true); |
2122 | ||
2123 | if (npages >= 2) | |
2124 | ra_meta_pages(sbi, start_sum_block(sbi), npages, | |
26879fb1 | 2125 | META_CP, true); |
3fa06d7b | 2126 | |
351df4b2 JK |
2127 | /* restore for compacted data summary */ |
2128 | if (read_compacted_summaries(sbi)) | |
2129 | return -EINVAL; | |
2130 | type = CURSEG_HOT_NODE; | |
2131 | } | |
2132 | ||
119ee914 | 2133 | if (__exist_node_summaries(sbi)) |
3fa06d7b | 2134 | ra_meta_pages(sbi, sum_blk_addr(sbi, NR_CURSEG_TYPE, type), |
26879fb1 | 2135 | NR_CURSEG_TYPE - type, META_CP, true); |
3fa06d7b | 2136 | |
e4fc5fbf CY |
2137 | for (; type <= CURSEG_COLD_NODE; type++) { |
2138 | err = read_normal_summaries(sbi, type); | |
2139 | if (err) | |
2140 | return err; | |
2141 | } | |
2142 | ||
351df4b2 JK |
2143 | return 0; |
2144 | } | |
2145 | ||
2146 | static void write_compacted_summaries(struct f2fs_sb_info *sbi, block_t blkaddr) | |
2147 | { | |
2148 | struct page *page; | |
2149 | unsigned char *kaddr; | |
2150 | struct f2fs_summary *summary; | |
2151 | struct curseg_info *seg_i; | |
2152 | int written_size = 0; | |
2153 | int i, j; | |
2154 | ||
2155 | page = grab_meta_page(sbi, blkaddr++); | |
2156 | kaddr = (unsigned char *)page_address(page); | |
2157 | ||
2158 | /* Step 1: write nat cache */ | |
2159 | seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
b7ad7512 | 2160 | memcpy(kaddr, seg_i->journal, SUM_JOURNAL_SIZE); |
351df4b2 JK |
2161 | written_size += SUM_JOURNAL_SIZE; |
2162 | ||
2163 | /* Step 2: write sit cache */ | |
2164 | seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 2165 | memcpy(kaddr + written_size, seg_i->journal, SUM_JOURNAL_SIZE); |
351df4b2 JK |
2166 | written_size += SUM_JOURNAL_SIZE; |
2167 | ||
351df4b2 JK |
2168 | /* Step 3: write summary entries */ |
2169 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
2170 | unsigned short blkoff; | |
2171 | seg_i = CURSEG_I(sbi, i); | |
2172 | if (sbi->ckpt->alloc_type[i] == SSR) | |
2173 | blkoff = sbi->blocks_per_seg; | |
2174 | else | |
2175 | blkoff = curseg_blkoff(sbi, i); | |
2176 | ||
2177 | for (j = 0; j < blkoff; j++) { | |
2178 | if (!page) { | |
2179 | page = grab_meta_page(sbi, blkaddr++); | |
2180 | kaddr = (unsigned char *)page_address(page); | |
2181 | written_size = 0; | |
2182 | } | |
2183 | summary = (struct f2fs_summary *)(kaddr + written_size); | |
2184 | *summary = seg_i->sum_blk->entries[j]; | |
2185 | written_size += SUMMARY_SIZE; | |
351df4b2 | 2186 | |
09cbfeaf | 2187 | if (written_size + SUMMARY_SIZE <= PAGE_SIZE - |
351df4b2 JK |
2188 | SUM_FOOTER_SIZE) |
2189 | continue; | |
2190 | ||
e8d61a74 | 2191 | set_page_dirty(page); |
351df4b2 JK |
2192 | f2fs_put_page(page, 1); |
2193 | page = NULL; | |
2194 | } | |
2195 | } | |
e8d61a74 CY |
2196 | if (page) { |
2197 | set_page_dirty(page); | |
351df4b2 | 2198 | f2fs_put_page(page, 1); |
e8d61a74 | 2199 | } |
351df4b2 JK |
2200 | } |
2201 | ||
2202 | static void write_normal_summaries(struct f2fs_sb_info *sbi, | |
2203 | block_t blkaddr, int type) | |
2204 | { | |
2205 | int i, end; | |
2206 | if (IS_DATASEG(type)) | |
2207 | end = type + NR_CURSEG_DATA_TYPE; | |
2208 | else | |
2209 | end = type + NR_CURSEG_NODE_TYPE; | |
2210 | ||
b7ad7512 CY |
2211 | for (i = type; i < end; i++) |
2212 | write_current_sum_page(sbi, i, blkaddr + (i - type)); | |
351df4b2 JK |
2213 | } |
2214 | ||
2215 | void write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk) | |
2216 | { | |
aaec2b1d | 2217 | if (is_set_ckpt_flags(sbi, CP_COMPACT_SUM_FLAG)) |
351df4b2 JK |
2218 | write_compacted_summaries(sbi, start_blk); |
2219 | else | |
2220 | write_normal_summaries(sbi, start_blk, CURSEG_HOT_DATA); | |
2221 | } | |
2222 | ||
2223 | void write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk) | |
2224 | { | |
119ee914 | 2225 | write_normal_summaries(sbi, start_blk, CURSEG_HOT_NODE); |
351df4b2 JK |
2226 | } |
2227 | ||
dfc08a12 | 2228 | int lookup_journal_in_cursum(struct f2fs_journal *journal, int type, |
351df4b2 JK |
2229 | unsigned int val, int alloc) |
2230 | { | |
2231 | int i; | |
2232 | ||
2233 | if (type == NAT_JOURNAL) { | |
dfc08a12 CY |
2234 | for (i = 0; i < nats_in_cursum(journal); i++) { |
2235 | if (le32_to_cpu(nid_in_journal(journal, i)) == val) | |
351df4b2 JK |
2236 | return i; |
2237 | } | |
dfc08a12 CY |
2238 | if (alloc && __has_cursum_space(journal, 1, NAT_JOURNAL)) |
2239 | return update_nats_in_cursum(journal, 1); | |
351df4b2 | 2240 | } else if (type == SIT_JOURNAL) { |
dfc08a12 CY |
2241 | for (i = 0; i < sits_in_cursum(journal); i++) |
2242 | if (le32_to_cpu(segno_in_journal(journal, i)) == val) | |
351df4b2 | 2243 | return i; |
dfc08a12 CY |
2244 | if (alloc && __has_cursum_space(journal, 1, SIT_JOURNAL)) |
2245 | return update_sits_in_cursum(journal, 1); | |
351df4b2 JK |
2246 | } |
2247 | return -1; | |
2248 | } | |
2249 | ||
2250 | static struct page *get_current_sit_page(struct f2fs_sb_info *sbi, | |
2251 | unsigned int segno) | |
2252 | { | |
2cc22186 | 2253 | return get_meta_page(sbi, current_sit_addr(sbi, segno)); |
351df4b2 JK |
2254 | } |
2255 | ||
2256 | static struct page *get_next_sit_page(struct f2fs_sb_info *sbi, | |
2257 | unsigned int start) | |
2258 | { | |
2259 | struct sit_info *sit_i = SIT_I(sbi); | |
2260 | struct page *src_page, *dst_page; | |
2261 | pgoff_t src_off, dst_off; | |
2262 | void *src_addr, *dst_addr; | |
2263 | ||
2264 | src_off = current_sit_addr(sbi, start); | |
2265 | dst_off = next_sit_addr(sbi, src_off); | |
2266 | ||
2267 | /* get current sit block page without lock */ | |
2268 | src_page = get_meta_page(sbi, src_off); | |
2269 | dst_page = grab_meta_page(sbi, dst_off); | |
9850cf4a | 2270 | f2fs_bug_on(sbi, PageDirty(src_page)); |
351df4b2 JK |
2271 | |
2272 | src_addr = page_address(src_page); | |
2273 | dst_addr = page_address(dst_page); | |
09cbfeaf | 2274 | memcpy(dst_addr, src_addr, PAGE_SIZE); |
351df4b2 JK |
2275 | |
2276 | set_page_dirty(dst_page); | |
2277 | f2fs_put_page(src_page, 1); | |
2278 | ||
2279 | set_to_next_sit(sit_i, start); | |
2280 | ||
2281 | return dst_page; | |
2282 | } | |
2283 | ||
184a5cd2 CY |
2284 | static struct sit_entry_set *grab_sit_entry_set(void) |
2285 | { | |
2286 | struct sit_entry_set *ses = | |
80c54505 | 2287 | f2fs_kmem_cache_alloc(sit_entry_set_slab, GFP_NOFS); |
184a5cd2 CY |
2288 | |
2289 | ses->entry_cnt = 0; | |
2290 | INIT_LIST_HEAD(&ses->set_list); | |
2291 | return ses; | |
2292 | } | |
2293 | ||
2294 | static void release_sit_entry_set(struct sit_entry_set *ses) | |
2295 | { | |
2296 | list_del(&ses->set_list); | |
2297 | kmem_cache_free(sit_entry_set_slab, ses); | |
2298 | } | |
2299 | ||
2300 | static void adjust_sit_entry_set(struct sit_entry_set *ses, | |
2301 | struct list_head *head) | |
2302 | { | |
2303 | struct sit_entry_set *next = ses; | |
2304 | ||
2305 | if (list_is_last(&ses->set_list, head)) | |
2306 | return; | |
2307 | ||
2308 | list_for_each_entry_continue(next, head, set_list) | |
2309 | if (ses->entry_cnt <= next->entry_cnt) | |
2310 | break; | |
2311 | ||
2312 | list_move_tail(&ses->set_list, &next->set_list); | |
2313 | } | |
2314 | ||
2315 | static void add_sit_entry(unsigned int segno, struct list_head *head) | |
2316 | { | |
2317 | struct sit_entry_set *ses; | |
2318 | unsigned int start_segno = START_SEGNO(segno); | |
2319 | ||
2320 | list_for_each_entry(ses, head, set_list) { | |
2321 | if (ses->start_segno == start_segno) { | |
2322 | ses->entry_cnt++; | |
2323 | adjust_sit_entry_set(ses, head); | |
2324 | return; | |
2325 | } | |
2326 | } | |
2327 | ||
2328 | ses = grab_sit_entry_set(); | |
2329 | ||
2330 | ses->start_segno = start_segno; | |
2331 | ses->entry_cnt++; | |
2332 | list_add(&ses->set_list, head); | |
2333 | } | |
2334 | ||
2335 | static void add_sits_in_set(struct f2fs_sb_info *sbi) | |
2336 | { | |
2337 | struct f2fs_sm_info *sm_info = SM_I(sbi); | |
2338 | struct list_head *set_list = &sm_info->sit_entry_set; | |
2339 | unsigned long *bitmap = SIT_I(sbi)->dirty_sentries_bitmap; | |
184a5cd2 CY |
2340 | unsigned int segno; |
2341 | ||
7cd8558b | 2342 | for_each_set_bit(segno, bitmap, MAIN_SEGS(sbi)) |
184a5cd2 CY |
2343 | add_sit_entry(segno, set_list); |
2344 | } | |
2345 | ||
2346 | static void remove_sits_in_journal(struct f2fs_sb_info *sbi) | |
351df4b2 JK |
2347 | { |
2348 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 2349 | struct f2fs_journal *journal = curseg->journal; |
351df4b2 JK |
2350 | int i; |
2351 | ||
b7ad7512 | 2352 | down_write(&curseg->journal_rwsem); |
dfc08a12 | 2353 | for (i = 0; i < sits_in_cursum(journal); i++) { |
184a5cd2 CY |
2354 | unsigned int segno; |
2355 | bool dirtied; | |
2356 | ||
dfc08a12 | 2357 | segno = le32_to_cpu(segno_in_journal(journal, i)); |
184a5cd2 CY |
2358 | dirtied = __mark_sit_entry_dirty(sbi, segno); |
2359 | ||
2360 | if (!dirtied) | |
2361 | add_sit_entry(segno, &SM_I(sbi)->sit_entry_set); | |
351df4b2 | 2362 | } |
dfc08a12 | 2363 | update_sits_in_cursum(journal, -i); |
b7ad7512 | 2364 | up_write(&curseg->journal_rwsem); |
351df4b2 JK |
2365 | } |
2366 | ||
0a8165d7 | 2367 | /* |
351df4b2 JK |
2368 | * CP calls this function, which flushes SIT entries including sit_journal, |
2369 | * and moves prefree segs to free segs. | |
2370 | */ | |
4b2fecc8 | 2371 | void flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
351df4b2 JK |
2372 | { |
2373 | struct sit_info *sit_i = SIT_I(sbi); | |
2374 | unsigned long *bitmap = sit_i->dirty_sentries_bitmap; | |
2375 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 2376 | struct f2fs_journal *journal = curseg->journal; |
184a5cd2 CY |
2377 | struct sit_entry_set *ses, *tmp; |
2378 | struct list_head *head = &SM_I(sbi)->sit_entry_set; | |
184a5cd2 | 2379 | bool to_journal = true; |
4b2fecc8 | 2380 | struct seg_entry *se; |
351df4b2 | 2381 | |
351df4b2 JK |
2382 | mutex_lock(&sit_i->sentry_lock); |
2383 | ||
2b11a74b WL |
2384 | if (!sit_i->dirty_sentries) |
2385 | goto out; | |
2386 | ||
351df4b2 | 2387 | /* |
184a5cd2 CY |
2388 | * add and account sit entries of dirty bitmap in sit entry |
2389 | * set temporarily | |
351df4b2 | 2390 | */ |
184a5cd2 | 2391 | add_sits_in_set(sbi); |
351df4b2 | 2392 | |
184a5cd2 CY |
2393 | /* |
2394 | * if there are no enough space in journal to store dirty sit | |
2395 | * entries, remove all entries from journal and add and account | |
2396 | * them in sit entry set. | |
2397 | */ | |
dfc08a12 | 2398 | if (!__has_cursum_space(journal, sit_i->dirty_sentries, SIT_JOURNAL)) |
184a5cd2 | 2399 | remove_sits_in_journal(sbi); |
b2955550 | 2400 | |
184a5cd2 CY |
2401 | /* |
2402 | * there are two steps to flush sit entries: | |
2403 | * #1, flush sit entries to journal in current cold data summary block. | |
2404 | * #2, flush sit entries to sit page. | |
2405 | */ | |
2406 | list_for_each_entry_safe(ses, tmp, head, set_list) { | |
4a257ed6 | 2407 | struct page *page = NULL; |
184a5cd2 CY |
2408 | struct f2fs_sit_block *raw_sit = NULL; |
2409 | unsigned int start_segno = ses->start_segno; | |
2410 | unsigned int end = min(start_segno + SIT_ENTRY_PER_BLOCK, | |
7cd8558b | 2411 | (unsigned long)MAIN_SEGS(sbi)); |
184a5cd2 CY |
2412 | unsigned int segno = start_segno; |
2413 | ||
2414 | if (to_journal && | |
dfc08a12 | 2415 | !__has_cursum_space(journal, ses->entry_cnt, SIT_JOURNAL)) |
184a5cd2 CY |
2416 | to_journal = false; |
2417 | ||
b7ad7512 CY |
2418 | if (to_journal) { |
2419 | down_write(&curseg->journal_rwsem); | |
2420 | } else { | |
184a5cd2 CY |
2421 | page = get_next_sit_page(sbi, start_segno); |
2422 | raw_sit = page_address(page); | |
351df4b2 | 2423 | } |
351df4b2 | 2424 | |
184a5cd2 CY |
2425 | /* flush dirty sit entries in region of current sit set */ |
2426 | for_each_set_bit_from(segno, bitmap, end) { | |
2427 | int offset, sit_offset; | |
4b2fecc8 JK |
2428 | |
2429 | se = get_seg_entry(sbi, segno); | |
184a5cd2 CY |
2430 | |
2431 | /* add discard candidates */ | |
d7bc2484 | 2432 | if (cpc->reason != CP_DISCARD) { |
4b2fecc8 | 2433 | cpc->trim_start = segno; |
25290fa5 | 2434 | add_discard_addrs(sbi, cpc, false); |
4b2fecc8 | 2435 | } |
184a5cd2 CY |
2436 | |
2437 | if (to_journal) { | |
dfc08a12 | 2438 | offset = lookup_journal_in_cursum(journal, |
184a5cd2 CY |
2439 | SIT_JOURNAL, segno, 1); |
2440 | f2fs_bug_on(sbi, offset < 0); | |
dfc08a12 | 2441 | segno_in_journal(journal, offset) = |
184a5cd2 CY |
2442 | cpu_to_le32(segno); |
2443 | seg_info_to_raw_sit(se, | |
dfc08a12 | 2444 | &sit_in_journal(journal, offset)); |
184a5cd2 CY |
2445 | } else { |
2446 | sit_offset = SIT_ENTRY_OFFSET(sit_i, segno); | |
2447 | seg_info_to_raw_sit(se, | |
2448 | &raw_sit->entries[sit_offset]); | |
2449 | } | |
351df4b2 | 2450 | |
184a5cd2 CY |
2451 | __clear_bit(segno, bitmap); |
2452 | sit_i->dirty_sentries--; | |
2453 | ses->entry_cnt--; | |
351df4b2 JK |
2454 | } |
2455 | ||
b7ad7512 CY |
2456 | if (to_journal) |
2457 | up_write(&curseg->journal_rwsem); | |
2458 | else | |
184a5cd2 CY |
2459 | f2fs_put_page(page, 1); |
2460 | ||
2461 | f2fs_bug_on(sbi, ses->entry_cnt); | |
2462 | release_sit_entry_set(ses); | |
351df4b2 | 2463 | } |
184a5cd2 CY |
2464 | |
2465 | f2fs_bug_on(sbi, !list_empty(head)); | |
2466 | f2fs_bug_on(sbi, sit_i->dirty_sentries); | |
184a5cd2 | 2467 | out: |
4b2fecc8 | 2468 | if (cpc->reason == CP_DISCARD) { |
650d3c4e YH |
2469 | __u64 trim_start = cpc->trim_start; |
2470 | ||
4b2fecc8 | 2471 | for (; cpc->trim_start <= cpc->trim_end; cpc->trim_start++) |
25290fa5 | 2472 | add_discard_addrs(sbi, cpc, false); |
650d3c4e YH |
2473 | |
2474 | cpc->trim_start = trim_start; | |
4b2fecc8 | 2475 | } |
351df4b2 | 2476 | mutex_unlock(&sit_i->sentry_lock); |
351df4b2 | 2477 | |
351df4b2 JK |
2478 | set_prefree_as_free_segments(sbi); |
2479 | } | |
2480 | ||
2481 | static int build_sit_info(struct f2fs_sb_info *sbi) | |
2482 | { | |
2483 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); | |
351df4b2 JK |
2484 | struct sit_info *sit_i; |
2485 | unsigned int sit_segs, start; | |
ae27d62e | 2486 | char *src_bitmap; |
351df4b2 JK |
2487 | unsigned int bitmap_size; |
2488 | ||
2489 | /* allocate memory for SIT information */ | |
2490 | sit_i = kzalloc(sizeof(struct sit_info), GFP_KERNEL); | |
2491 | if (!sit_i) | |
2492 | return -ENOMEM; | |
2493 | ||
2494 | SM_I(sbi)->sit_info = sit_i; | |
2495 | ||
39307a8e JK |
2496 | sit_i->sentries = f2fs_kvzalloc(MAIN_SEGS(sbi) * |
2497 | sizeof(struct seg_entry), GFP_KERNEL); | |
351df4b2 JK |
2498 | if (!sit_i->sentries) |
2499 | return -ENOMEM; | |
2500 | ||
7cd8558b | 2501 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
39307a8e | 2502 | sit_i->dirty_sentries_bitmap = f2fs_kvzalloc(bitmap_size, GFP_KERNEL); |
351df4b2 JK |
2503 | if (!sit_i->dirty_sentries_bitmap) |
2504 | return -ENOMEM; | |
2505 | ||
7cd8558b | 2506 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
351df4b2 JK |
2507 | sit_i->sentries[start].cur_valid_map |
2508 | = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); | |
2509 | sit_i->sentries[start].ckpt_valid_map | |
2510 | = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); | |
a66cdd98 | 2511 | if (!sit_i->sentries[start].cur_valid_map || |
3e025740 | 2512 | !sit_i->sentries[start].ckpt_valid_map) |
351df4b2 | 2513 | return -ENOMEM; |
3e025740 | 2514 | |
355e7891 CY |
2515 | #ifdef CONFIG_F2FS_CHECK_FS |
2516 | sit_i->sentries[start].cur_valid_map_mir | |
2517 | = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); | |
2518 | if (!sit_i->sentries[start].cur_valid_map_mir) | |
2519 | return -ENOMEM; | |
2520 | #endif | |
2521 | ||
3e025740 JK |
2522 | if (f2fs_discard_en(sbi)) { |
2523 | sit_i->sentries[start].discard_map | |
2524 | = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); | |
2525 | if (!sit_i->sentries[start].discard_map) | |
2526 | return -ENOMEM; | |
2527 | } | |
351df4b2 JK |
2528 | } |
2529 | ||
60a3b782 JK |
2530 | sit_i->tmp_map = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); |
2531 | if (!sit_i->tmp_map) | |
2532 | return -ENOMEM; | |
2533 | ||
351df4b2 | 2534 | if (sbi->segs_per_sec > 1) { |
39307a8e JK |
2535 | sit_i->sec_entries = f2fs_kvzalloc(MAIN_SECS(sbi) * |
2536 | sizeof(struct sec_entry), GFP_KERNEL); | |
351df4b2 JK |
2537 | if (!sit_i->sec_entries) |
2538 | return -ENOMEM; | |
2539 | } | |
2540 | ||
2541 | /* get information related with SIT */ | |
2542 | sit_segs = le32_to_cpu(raw_super->segment_count_sit) >> 1; | |
2543 | ||
2544 | /* setup SIT bitmap from ckeckpoint pack */ | |
2545 | bitmap_size = __bitmap_size(sbi, SIT_BITMAP); | |
2546 | src_bitmap = __bitmap_ptr(sbi, SIT_BITMAP); | |
2547 | ||
ae27d62e CY |
2548 | sit_i->sit_bitmap = kmemdup(src_bitmap, bitmap_size, GFP_KERNEL); |
2549 | if (!sit_i->sit_bitmap) | |
351df4b2 | 2550 | return -ENOMEM; |
351df4b2 | 2551 | |
ae27d62e CY |
2552 | #ifdef CONFIG_F2FS_CHECK_FS |
2553 | sit_i->sit_bitmap_mir = kmemdup(src_bitmap, bitmap_size, GFP_KERNEL); | |
2554 | if (!sit_i->sit_bitmap_mir) | |
2555 | return -ENOMEM; | |
2556 | #endif | |
2557 | ||
351df4b2 JK |
2558 | /* init SIT information */ |
2559 | sit_i->s_ops = &default_salloc_ops; | |
2560 | ||
2561 | sit_i->sit_base_addr = le32_to_cpu(raw_super->sit_blkaddr); | |
2562 | sit_i->sit_blocks = sit_segs << sbi->log_blocks_per_seg; | |
c79b7ff1 | 2563 | sit_i->written_valid_blocks = 0; |
351df4b2 JK |
2564 | sit_i->bitmap_size = bitmap_size; |
2565 | sit_i->dirty_sentries = 0; | |
2566 | sit_i->sents_per_block = SIT_ENTRY_PER_BLOCK; | |
2567 | sit_i->elapsed_time = le64_to_cpu(sbi->ckpt->elapsed_time); | |
2568 | sit_i->mounted_time = CURRENT_TIME_SEC.tv_sec; | |
2569 | mutex_init(&sit_i->sentry_lock); | |
2570 | return 0; | |
2571 | } | |
2572 | ||
2573 | static int build_free_segmap(struct f2fs_sb_info *sbi) | |
2574 | { | |
351df4b2 JK |
2575 | struct free_segmap_info *free_i; |
2576 | unsigned int bitmap_size, sec_bitmap_size; | |
2577 | ||
2578 | /* allocate memory for free segmap information */ | |
2579 | free_i = kzalloc(sizeof(struct free_segmap_info), GFP_KERNEL); | |
2580 | if (!free_i) | |
2581 | return -ENOMEM; | |
2582 | ||
2583 | SM_I(sbi)->free_info = free_i; | |
2584 | ||
7cd8558b | 2585 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
39307a8e | 2586 | free_i->free_segmap = f2fs_kvmalloc(bitmap_size, GFP_KERNEL); |
351df4b2 JK |
2587 | if (!free_i->free_segmap) |
2588 | return -ENOMEM; | |
2589 | ||
7cd8558b | 2590 | sec_bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi)); |
39307a8e | 2591 | free_i->free_secmap = f2fs_kvmalloc(sec_bitmap_size, GFP_KERNEL); |
351df4b2 JK |
2592 | if (!free_i->free_secmap) |
2593 | return -ENOMEM; | |
2594 | ||
2595 | /* set all segments as dirty temporarily */ | |
2596 | memset(free_i->free_segmap, 0xff, bitmap_size); | |
2597 | memset(free_i->free_secmap, 0xff, sec_bitmap_size); | |
2598 | ||
2599 | /* init free segmap information */ | |
7cd8558b | 2600 | free_i->start_segno = GET_SEGNO_FROM_SEG0(sbi, MAIN_BLKADDR(sbi)); |
351df4b2 JK |
2601 | free_i->free_segments = 0; |
2602 | free_i->free_sections = 0; | |
1a118ccf | 2603 | spin_lock_init(&free_i->segmap_lock); |
351df4b2 JK |
2604 | return 0; |
2605 | } | |
2606 | ||
2607 | static int build_curseg(struct f2fs_sb_info *sbi) | |
2608 | { | |
1042d60f | 2609 | struct curseg_info *array; |
351df4b2 JK |
2610 | int i; |
2611 | ||
b434babf | 2612 | array = kcalloc(NR_CURSEG_TYPE, sizeof(*array), GFP_KERNEL); |
351df4b2 JK |
2613 | if (!array) |
2614 | return -ENOMEM; | |
2615 | ||
2616 | SM_I(sbi)->curseg_array = array; | |
2617 | ||
2618 | for (i = 0; i < NR_CURSEG_TYPE; i++) { | |
2619 | mutex_init(&array[i].curseg_mutex); | |
09cbfeaf | 2620 | array[i].sum_blk = kzalloc(PAGE_SIZE, GFP_KERNEL); |
351df4b2 JK |
2621 | if (!array[i].sum_blk) |
2622 | return -ENOMEM; | |
b7ad7512 CY |
2623 | init_rwsem(&array[i].journal_rwsem); |
2624 | array[i].journal = kzalloc(sizeof(struct f2fs_journal), | |
2625 | GFP_KERNEL); | |
2626 | if (!array[i].journal) | |
2627 | return -ENOMEM; | |
351df4b2 JK |
2628 | array[i].segno = NULL_SEGNO; |
2629 | array[i].next_blkoff = 0; | |
2630 | } | |
2631 | return restore_curseg_summaries(sbi); | |
2632 | } | |
2633 | ||
2634 | static void build_sit_entries(struct f2fs_sb_info *sbi) | |
2635 | { | |
2636 | struct sit_info *sit_i = SIT_I(sbi); | |
2637 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 2638 | struct f2fs_journal *journal = curseg->journal; |
9c094040 YH |
2639 | struct seg_entry *se; |
2640 | struct f2fs_sit_entry sit; | |
74de593a CY |
2641 | int sit_blk_cnt = SIT_BLK_CNT(sbi); |
2642 | unsigned int i, start, end; | |
2643 | unsigned int readed, start_blk = 0; | |
351df4b2 | 2644 | |
74de593a | 2645 | do { |
664ba972 JK |
2646 | readed = ra_meta_pages(sbi, start_blk, BIO_MAX_PAGES, |
2647 | META_SIT, true); | |
74de593a CY |
2648 | |
2649 | start = start_blk * sit_i->sents_per_block; | |
2650 | end = (start_blk + readed) * sit_i->sents_per_block; | |
2651 | ||
7cd8558b | 2652 | for (; start < end && start < MAIN_SEGS(sbi); start++) { |
74de593a | 2653 | struct f2fs_sit_block *sit_blk; |
74de593a CY |
2654 | struct page *page; |
2655 | ||
9c094040 | 2656 | se = &sit_i->sentries[start]; |
74de593a CY |
2657 | page = get_current_sit_page(sbi, start); |
2658 | sit_blk = (struct f2fs_sit_block *)page_address(page); | |
2659 | sit = sit_blk->entries[SIT_ENTRY_OFFSET(sit_i, start)]; | |
2660 | f2fs_put_page(page, 1); | |
d600af23 | 2661 | |
74de593a CY |
2662 | check_block_count(sbi, start, &sit); |
2663 | seg_info_from_raw_sit(se, &sit); | |
a66cdd98 JK |
2664 | |
2665 | /* build discard map only one time */ | |
3e025740 JK |
2666 | if (f2fs_discard_en(sbi)) { |
2667 | memcpy(se->discard_map, se->cur_valid_map, | |
2668 | SIT_VBLOCK_MAP_SIZE); | |
2669 | sbi->discard_blks += sbi->blocks_per_seg - | |
2670 | se->valid_blocks; | |
2671 | } | |
a66cdd98 | 2672 | |
d600af23 CY |
2673 | if (sbi->segs_per_sec > 1) |
2674 | get_sec_entry(sbi, start)->valid_blocks += | |
2675 | se->valid_blocks; | |
351df4b2 | 2676 | } |
74de593a CY |
2677 | start_blk += readed; |
2678 | } while (start_blk < sit_blk_cnt); | |
d600af23 CY |
2679 | |
2680 | down_read(&curseg->journal_rwsem); | |
2681 | for (i = 0; i < sits_in_cursum(journal); i++) { | |
d600af23 CY |
2682 | unsigned int old_valid_blocks; |
2683 | ||
2684 | start = le32_to_cpu(segno_in_journal(journal, i)); | |
2685 | se = &sit_i->sentries[start]; | |
2686 | sit = sit_in_journal(journal, i); | |
2687 | ||
2688 | old_valid_blocks = se->valid_blocks; | |
2689 | ||
2690 | check_block_count(sbi, start, &sit); | |
2691 | seg_info_from_raw_sit(se, &sit); | |
2692 | ||
2693 | if (f2fs_discard_en(sbi)) { | |
2694 | memcpy(se->discard_map, se->cur_valid_map, | |
2695 | SIT_VBLOCK_MAP_SIZE); | |
2696 | sbi->discard_blks += old_valid_blocks - | |
2697 | se->valid_blocks; | |
2698 | } | |
2699 | ||
2700 | if (sbi->segs_per_sec > 1) | |
2701 | get_sec_entry(sbi, start)->valid_blocks += | |
2702 | se->valid_blocks - old_valid_blocks; | |
2703 | } | |
2704 | up_read(&curseg->journal_rwsem); | |
351df4b2 JK |
2705 | } |
2706 | ||
2707 | static void init_free_segmap(struct f2fs_sb_info *sbi) | |
2708 | { | |
2709 | unsigned int start; | |
2710 | int type; | |
2711 | ||
7cd8558b | 2712 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
351df4b2 JK |
2713 | struct seg_entry *sentry = get_seg_entry(sbi, start); |
2714 | if (!sentry->valid_blocks) | |
2715 | __set_free(sbi, start); | |
c79b7ff1 JK |
2716 | else |
2717 | SIT_I(sbi)->written_valid_blocks += | |
2718 | sentry->valid_blocks; | |
351df4b2 JK |
2719 | } |
2720 | ||
2721 | /* set use the current segments */ | |
2722 | for (type = CURSEG_HOT_DATA; type <= CURSEG_COLD_NODE; type++) { | |
2723 | struct curseg_info *curseg_t = CURSEG_I(sbi, type); | |
2724 | __set_test_and_inuse(sbi, curseg_t->segno); | |
2725 | } | |
2726 | } | |
2727 | ||
2728 | static void init_dirty_segmap(struct f2fs_sb_info *sbi) | |
2729 | { | |
2730 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
2731 | struct free_segmap_info *free_i = FREE_I(sbi); | |
7cd8558b | 2732 | unsigned int segno = 0, offset = 0; |
351df4b2 JK |
2733 | unsigned short valid_blocks; |
2734 | ||
8736fbf0 | 2735 | while (1) { |
351df4b2 | 2736 | /* find dirty segment based on free segmap */ |
7cd8558b JK |
2737 | segno = find_next_inuse(free_i, MAIN_SEGS(sbi), offset); |
2738 | if (segno >= MAIN_SEGS(sbi)) | |
351df4b2 JK |
2739 | break; |
2740 | offset = segno + 1; | |
2741 | valid_blocks = get_valid_blocks(sbi, segno, 0); | |
ec325b52 | 2742 | if (valid_blocks == sbi->blocks_per_seg || !valid_blocks) |
351df4b2 | 2743 | continue; |
ec325b52 JK |
2744 | if (valid_blocks > sbi->blocks_per_seg) { |
2745 | f2fs_bug_on(sbi, 1); | |
2746 | continue; | |
2747 | } | |
351df4b2 JK |
2748 | mutex_lock(&dirty_i->seglist_lock); |
2749 | __locate_dirty_segment(sbi, segno, DIRTY); | |
2750 | mutex_unlock(&dirty_i->seglist_lock); | |
2751 | } | |
2752 | } | |
2753 | ||
5ec4e49f | 2754 | static int init_victim_secmap(struct f2fs_sb_info *sbi) |
351df4b2 JK |
2755 | { |
2756 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
7cd8558b | 2757 | unsigned int bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi)); |
351df4b2 | 2758 | |
39307a8e | 2759 | dirty_i->victim_secmap = f2fs_kvzalloc(bitmap_size, GFP_KERNEL); |
5ec4e49f | 2760 | if (!dirty_i->victim_secmap) |
351df4b2 JK |
2761 | return -ENOMEM; |
2762 | return 0; | |
2763 | } | |
2764 | ||
2765 | static int build_dirty_segmap(struct f2fs_sb_info *sbi) | |
2766 | { | |
2767 | struct dirty_seglist_info *dirty_i; | |
2768 | unsigned int bitmap_size, i; | |
2769 | ||
2770 | /* allocate memory for dirty segments list information */ | |
2771 | dirty_i = kzalloc(sizeof(struct dirty_seglist_info), GFP_KERNEL); | |
2772 | if (!dirty_i) | |
2773 | return -ENOMEM; | |
2774 | ||
2775 | SM_I(sbi)->dirty_info = dirty_i; | |
2776 | mutex_init(&dirty_i->seglist_lock); | |
2777 | ||
7cd8558b | 2778 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
351df4b2 JK |
2779 | |
2780 | for (i = 0; i < NR_DIRTY_TYPE; i++) { | |
39307a8e | 2781 | dirty_i->dirty_segmap[i] = f2fs_kvzalloc(bitmap_size, GFP_KERNEL); |
351df4b2 JK |
2782 | if (!dirty_i->dirty_segmap[i]) |
2783 | return -ENOMEM; | |
2784 | } | |
2785 | ||
2786 | init_dirty_segmap(sbi); | |
5ec4e49f | 2787 | return init_victim_secmap(sbi); |
351df4b2 JK |
2788 | } |
2789 | ||
0a8165d7 | 2790 | /* |
351df4b2 JK |
2791 | * Update min, max modified time for cost-benefit GC algorithm |
2792 | */ | |
2793 | static void init_min_max_mtime(struct f2fs_sb_info *sbi) | |
2794 | { | |
2795 | struct sit_info *sit_i = SIT_I(sbi); | |
2796 | unsigned int segno; | |
2797 | ||
2798 | mutex_lock(&sit_i->sentry_lock); | |
2799 | ||
2800 | sit_i->min_mtime = LLONG_MAX; | |
2801 | ||
7cd8558b | 2802 | for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) { |
351df4b2 JK |
2803 | unsigned int i; |
2804 | unsigned long long mtime = 0; | |
2805 | ||
2806 | for (i = 0; i < sbi->segs_per_sec; i++) | |
2807 | mtime += get_seg_entry(sbi, segno + i)->mtime; | |
2808 | ||
2809 | mtime = div_u64(mtime, sbi->segs_per_sec); | |
2810 | ||
2811 | if (sit_i->min_mtime > mtime) | |
2812 | sit_i->min_mtime = mtime; | |
2813 | } | |
2814 | sit_i->max_mtime = get_mtime(sbi); | |
2815 | mutex_unlock(&sit_i->sentry_lock); | |
2816 | } | |
2817 | ||
2818 | int build_segment_manager(struct f2fs_sb_info *sbi) | |
2819 | { | |
2820 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); | |
2821 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1042d60f | 2822 | struct f2fs_sm_info *sm_info; |
351df4b2 JK |
2823 | int err; |
2824 | ||
2825 | sm_info = kzalloc(sizeof(struct f2fs_sm_info), GFP_KERNEL); | |
2826 | if (!sm_info) | |
2827 | return -ENOMEM; | |
2828 | ||
2829 | /* init sm info */ | |
2830 | sbi->sm_info = sm_info; | |
351df4b2 JK |
2831 | sm_info->seg0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); |
2832 | sm_info->main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); | |
2833 | sm_info->segment_count = le32_to_cpu(raw_super->segment_count); | |
2834 | sm_info->reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count); | |
2835 | sm_info->ovp_segments = le32_to_cpu(ckpt->overprov_segment_count); | |
2836 | sm_info->main_segments = le32_to_cpu(raw_super->segment_count_main); | |
2837 | sm_info->ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); | |
58c41035 JK |
2838 | sm_info->rec_prefree_segments = sm_info->main_segments * |
2839 | DEF_RECLAIM_PREFREE_SEGMENTS / 100; | |
44a83499 JK |
2840 | if (sm_info->rec_prefree_segments > DEF_MAX_RECLAIM_PREFREE_SEGMENTS) |
2841 | sm_info->rec_prefree_segments = DEF_MAX_RECLAIM_PREFREE_SEGMENTS; | |
2842 | ||
52763a4b JK |
2843 | if (!test_opt(sbi, LFS)) |
2844 | sm_info->ipu_policy = 1 << F2FS_IPU_FSYNC; | |
216fbd64 | 2845 | sm_info->min_ipu_util = DEF_MIN_IPU_UTIL; |
c1ce1b02 | 2846 | sm_info->min_fsync_blocks = DEF_MIN_FSYNC_BLOCKS; |
351df4b2 | 2847 | |
bba681cb JK |
2848 | sm_info->trim_sections = DEF_BATCHED_TRIM_SECTIONS; |
2849 | ||
184a5cd2 CY |
2850 | INIT_LIST_HEAD(&sm_info->sit_entry_set); |
2851 | ||
b270ad6f | 2852 | if (test_opt(sbi, FLUSH_MERGE) && !f2fs_readonly(sbi->sb)) { |
2163d198 GZ |
2853 | err = create_flush_cmd_control(sbi); |
2854 | if (err) | |
a688b9d9 | 2855 | return err; |
6b4afdd7 JK |
2856 | } |
2857 | ||
0b54fb84 JK |
2858 | err = create_discard_cmd_control(sbi); |
2859 | if (err) | |
2860 | return err; | |
2861 | ||
351df4b2 JK |
2862 | err = build_sit_info(sbi); |
2863 | if (err) | |
2864 | return err; | |
2865 | err = build_free_segmap(sbi); | |
2866 | if (err) | |
2867 | return err; | |
2868 | err = build_curseg(sbi); | |
2869 | if (err) | |
2870 | return err; | |
2871 | ||
2872 | /* reinit free segmap based on SIT */ | |
2873 | build_sit_entries(sbi); | |
2874 | ||
2875 | init_free_segmap(sbi); | |
2876 | err = build_dirty_segmap(sbi); | |
2877 | if (err) | |
2878 | return err; | |
2879 | ||
2880 | init_min_max_mtime(sbi); | |
2881 | return 0; | |
2882 | } | |
2883 | ||
2884 | static void discard_dirty_segmap(struct f2fs_sb_info *sbi, | |
2885 | enum dirty_type dirty_type) | |
2886 | { | |
2887 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
2888 | ||
2889 | mutex_lock(&dirty_i->seglist_lock); | |
39307a8e | 2890 | kvfree(dirty_i->dirty_segmap[dirty_type]); |
351df4b2 JK |
2891 | dirty_i->nr_dirty[dirty_type] = 0; |
2892 | mutex_unlock(&dirty_i->seglist_lock); | |
2893 | } | |
2894 | ||
5ec4e49f | 2895 | static void destroy_victim_secmap(struct f2fs_sb_info *sbi) |
351df4b2 JK |
2896 | { |
2897 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
39307a8e | 2898 | kvfree(dirty_i->victim_secmap); |
351df4b2 JK |
2899 | } |
2900 | ||
2901 | static void destroy_dirty_segmap(struct f2fs_sb_info *sbi) | |
2902 | { | |
2903 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
2904 | int i; | |
2905 | ||
2906 | if (!dirty_i) | |
2907 | return; | |
2908 | ||
2909 | /* discard pre-free/dirty segments list */ | |
2910 | for (i = 0; i < NR_DIRTY_TYPE; i++) | |
2911 | discard_dirty_segmap(sbi, i); | |
2912 | ||
5ec4e49f | 2913 | destroy_victim_secmap(sbi); |
351df4b2 JK |
2914 | SM_I(sbi)->dirty_info = NULL; |
2915 | kfree(dirty_i); | |
2916 | } | |
2917 | ||
2918 | static void destroy_curseg(struct f2fs_sb_info *sbi) | |
2919 | { | |
2920 | struct curseg_info *array = SM_I(sbi)->curseg_array; | |
2921 | int i; | |
2922 | ||
2923 | if (!array) | |
2924 | return; | |
2925 | SM_I(sbi)->curseg_array = NULL; | |
b7ad7512 | 2926 | for (i = 0; i < NR_CURSEG_TYPE; i++) { |
351df4b2 | 2927 | kfree(array[i].sum_blk); |
b7ad7512 CY |
2928 | kfree(array[i].journal); |
2929 | } | |
351df4b2 JK |
2930 | kfree(array); |
2931 | } | |
2932 | ||
2933 | static void destroy_free_segmap(struct f2fs_sb_info *sbi) | |
2934 | { | |
2935 | struct free_segmap_info *free_i = SM_I(sbi)->free_info; | |
2936 | if (!free_i) | |
2937 | return; | |
2938 | SM_I(sbi)->free_info = NULL; | |
39307a8e JK |
2939 | kvfree(free_i->free_segmap); |
2940 | kvfree(free_i->free_secmap); | |
351df4b2 JK |
2941 | kfree(free_i); |
2942 | } | |
2943 | ||
2944 | static void destroy_sit_info(struct f2fs_sb_info *sbi) | |
2945 | { | |
2946 | struct sit_info *sit_i = SIT_I(sbi); | |
2947 | unsigned int start; | |
2948 | ||
2949 | if (!sit_i) | |
2950 | return; | |
2951 | ||
2952 | if (sit_i->sentries) { | |
7cd8558b | 2953 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
351df4b2 | 2954 | kfree(sit_i->sentries[start].cur_valid_map); |
355e7891 CY |
2955 | #ifdef CONFIG_F2FS_CHECK_FS |
2956 | kfree(sit_i->sentries[start].cur_valid_map_mir); | |
2957 | #endif | |
351df4b2 | 2958 | kfree(sit_i->sentries[start].ckpt_valid_map); |
a66cdd98 | 2959 | kfree(sit_i->sentries[start].discard_map); |
351df4b2 JK |
2960 | } |
2961 | } | |
60a3b782 JK |
2962 | kfree(sit_i->tmp_map); |
2963 | ||
39307a8e JK |
2964 | kvfree(sit_i->sentries); |
2965 | kvfree(sit_i->sec_entries); | |
2966 | kvfree(sit_i->dirty_sentries_bitmap); | |
351df4b2 JK |
2967 | |
2968 | SM_I(sbi)->sit_info = NULL; | |
2969 | kfree(sit_i->sit_bitmap); | |
ae27d62e CY |
2970 | #ifdef CONFIG_F2FS_CHECK_FS |
2971 | kfree(sit_i->sit_bitmap_mir); | |
2972 | #endif | |
351df4b2 JK |
2973 | kfree(sit_i); |
2974 | } | |
2975 | ||
2976 | void destroy_segment_manager(struct f2fs_sb_info *sbi) | |
2977 | { | |
2978 | struct f2fs_sm_info *sm_info = SM_I(sbi); | |
a688b9d9 | 2979 | |
3b03f724 CY |
2980 | if (!sm_info) |
2981 | return; | |
5eba8c5d | 2982 | destroy_flush_cmd_control(sbi, true); |
0b54fb84 | 2983 | destroy_discard_cmd_control(sbi, true); |
351df4b2 JK |
2984 | destroy_dirty_segmap(sbi); |
2985 | destroy_curseg(sbi); | |
2986 | destroy_free_segmap(sbi); | |
2987 | destroy_sit_info(sbi); | |
2988 | sbi->sm_info = NULL; | |
2989 | kfree(sm_info); | |
2990 | } | |
7fd9e544 JK |
2991 | |
2992 | int __init create_segment_manager_caches(void) | |
2993 | { | |
2994 | discard_entry_slab = f2fs_kmem_cache_create("discard_entry", | |
e8512d2e | 2995 | sizeof(struct discard_entry)); |
7fd9e544 | 2996 | if (!discard_entry_slab) |
184a5cd2 CY |
2997 | goto fail; |
2998 | ||
b01a9201 JK |
2999 | discard_cmd_slab = f2fs_kmem_cache_create("discard_cmd", |
3000 | sizeof(struct discard_cmd)); | |
3001 | if (!discard_cmd_slab) | |
6ab2a308 | 3002 | goto destroy_discard_entry; |
275b66b0 | 3003 | |
184a5cd2 | 3004 | sit_entry_set_slab = f2fs_kmem_cache_create("sit_entry_set", |
c9ee0085 | 3005 | sizeof(struct sit_entry_set)); |
184a5cd2 | 3006 | if (!sit_entry_set_slab) |
b01a9201 | 3007 | goto destroy_discard_cmd; |
88b88a66 JK |
3008 | |
3009 | inmem_entry_slab = f2fs_kmem_cache_create("inmem_page_entry", | |
3010 | sizeof(struct inmem_pages)); | |
3011 | if (!inmem_entry_slab) | |
3012 | goto destroy_sit_entry_set; | |
7fd9e544 | 3013 | return 0; |
184a5cd2 | 3014 | |
88b88a66 JK |
3015 | destroy_sit_entry_set: |
3016 | kmem_cache_destroy(sit_entry_set_slab); | |
b01a9201 JK |
3017 | destroy_discard_cmd: |
3018 | kmem_cache_destroy(discard_cmd_slab); | |
6ab2a308 | 3019 | destroy_discard_entry: |
184a5cd2 CY |
3020 | kmem_cache_destroy(discard_entry_slab); |
3021 | fail: | |
3022 | return -ENOMEM; | |
7fd9e544 JK |
3023 | } |
3024 | ||
3025 | void destroy_segment_manager_caches(void) | |
3026 | { | |
184a5cd2 | 3027 | kmem_cache_destroy(sit_entry_set_slab); |
b01a9201 | 3028 | kmem_cache_destroy(discard_cmd_slab); |
7fd9e544 | 3029 | kmem_cache_destroy(discard_entry_slab); |
88b88a66 | 3030 | kmem_cache_destroy(inmem_entry_slab); |
7fd9e544 | 3031 | } |