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Commit | Line | Data |
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0a8165d7 | 1 | /* |
127e670a JK |
2 | * fs/f2fs/checkpoint.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/bio.h> | |
13 | #include <linux/mpage.h> | |
14 | #include <linux/writeback.h> | |
15 | #include <linux/blkdev.h> | |
16 | #include <linux/f2fs_fs.h> | |
17 | #include <linux/pagevec.h> | |
18 | #include <linux/swap.h> | |
19 | ||
20 | #include "f2fs.h" | |
21 | #include "node.h" | |
22 | #include "segment.h" | |
9e4ded3f | 23 | #include "trace.h" |
2af4bd6c | 24 | #include <trace/events/f2fs.h> |
127e670a | 25 | |
6451e041 | 26 | static struct kmem_cache *ino_entry_slab; |
06292073 | 27 | struct kmem_cache *inode_entry_slab; |
127e670a | 28 | |
38f91ca8 JK |
29 | void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io) |
30 | { | |
aaec2b1d | 31 | set_ckpt_flags(sbi, CP_ERROR_FLAG); |
38f91ca8 JK |
32 | sbi->sb->s_flags |= MS_RDONLY; |
33 | if (!end_io) | |
34 | f2fs_flush_merged_bios(sbi); | |
35 | } | |
36 | ||
0a8165d7 | 37 | /* |
127e670a JK |
38 | * We guarantee no failure on the returned page. |
39 | */ | |
40 | struct page *grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index) | |
41 | { | |
9df27d98 | 42 | struct address_space *mapping = META_MAPPING(sbi); |
127e670a JK |
43 | struct page *page = NULL; |
44 | repeat: | |
300e129c | 45 | page = f2fs_grab_cache_page(mapping, index, false); |
127e670a JK |
46 | if (!page) { |
47 | cond_resched(); | |
48 | goto repeat; | |
49 | } | |
fec1d657 | 50 | f2fs_wait_on_page_writeback(page, META, true); |
237c0790 JK |
51 | if (!PageUptodate(page)) |
52 | SetPageUptodate(page); | |
127e670a JK |
53 | return page; |
54 | } | |
55 | ||
0a8165d7 | 56 | /* |
127e670a JK |
57 | * We guarantee no failure on the returned page. |
58 | */ | |
2b947003 CY |
59 | static struct page *__get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index, |
60 | bool is_meta) | |
127e670a | 61 | { |
9df27d98 | 62 | struct address_space *mapping = META_MAPPING(sbi); |
127e670a | 63 | struct page *page; |
cf04e8eb | 64 | struct f2fs_io_info fio = { |
05ca3632 | 65 | .sbi = sbi, |
cf04e8eb | 66 | .type = META, |
04d328de | 67 | .op = REQ_OP_READ, |
70fd7614 | 68 | .op_flags = REQ_META | REQ_PRIO, |
7a9d7548 CY |
69 | .old_blkaddr = index, |
70 | .new_blkaddr = index, | |
4375a336 | 71 | .encrypted_page = NULL, |
cf04e8eb | 72 | }; |
2b947003 CY |
73 | |
74 | if (unlikely(!is_meta)) | |
04d328de | 75 | fio.op_flags &= ~REQ_META; |
127e670a | 76 | repeat: |
300e129c | 77 | page = f2fs_grab_cache_page(mapping, index, false); |
127e670a JK |
78 | if (!page) { |
79 | cond_resched(); | |
80 | goto repeat; | |
81 | } | |
393ff91f JK |
82 | if (PageUptodate(page)) |
83 | goto out; | |
84 | ||
05ca3632 JK |
85 | fio.page = page; |
86 | ||
86531d6b JK |
87 | if (f2fs_submit_page_bio(&fio)) { |
88 | f2fs_put_page(page, 1); | |
127e670a | 89 | goto repeat; |
86531d6b | 90 | } |
127e670a | 91 | |
393ff91f | 92 | lock_page(page); |
6bacf52f | 93 | if (unlikely(page->mapping != mapping)) { |
afcb7ca0 JK |
94 | f2fs_put_page(page, 1); |
95 | goto repeat; | |
96 | } | |
f3f338ca CY |
97 | |
98 | /* | |
99 | * if there is any IO error when accessing device, make our filesystem | |
100 | * readonly and make sure do not write checkpoint with non-uptodate | |
101 | * meta page. | |
102 | */ | |
103 | if (unlikely(!PageUptodate(page))) | |
38f91ca8 | 104 | f2fs_stop_checkpoint(sbi, false); |
393ff91f | 105 | out: |
127e670a JK |
106 | return page; |
107 | } | |
108 | ||
2b947003 CY |
109 | struct page *get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index) |
110 | { | |
111 | return __get_meta_page(sbi, index, true); | |
112 | } | |
113 | ||
114 | /* for POR only */ | |
115 | struct page *get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index) | |
116 | { | |
117 | return __get_meta_page(sbi, index, false); | |
118 | } | |
119 | ||
f0c9cada | 120 | bool is_valid_blkaddr(struct f2fs_sb_info *sbi, block_t blkaddr, int type) |
662befda CY |
121 | { |
122 | switch (type) { | |
123 | case META_NAT: | |
66b00c18 | 124 | break; |
662befda | 125 | case META_SIT: |
66b00c18 CY |
126 | if (unlikely(blkaddr >= SIT_BLK_CNT(sbi))) |
127 | return false; | |
128 | break; | |
81c1a0f1 | 129 | case META_SSA: |
66b00c18 CY |
130 | if (unlikely(blkaddr >= MAIN_BLKADDR(sbi) || |
131 | blkaddr < SM_I(sbi)->ssa_blkaddr)) | |
132 | return false; | |
133 | break; | |
662befda | 134 | case META_CP: |
66b00c18 CY |
135 | if (unlikely(blkaddr >= SIT_I(sbi)->sit_base_addr || |
136 | blkaddr < __start_cp_addr(sbi))) | |
137 | return false; | |
138 | break; | |
4c521f49 | 139 | case META_POR: |
66b00c18 CY |
140 | if (unlikely(blkaddr >= MAX_BLKADDR(sbi) || |
141 | blkaddr < MAIN_BLKADDR(sbi))) | |
142 | return false; | |
143 | break; | |
662befda CY |
144 | default: |
145 | BUG(); | |
146 | } | |
66b00c18 CY |
147 | |
148 | return true; | |
662befda CY |
149 | } |
150 | ||
151 | /* | |
81c1a0f1 | 152 | * Readahead CP/NAT/SIT/SSA pages |
662befda | 153 | */ |
26879fb1 CY |
154 | int ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages, |
155 | int type, bool sync) | |
662befda | 156 | { |
662befda | 157 | struct page *page; |
4c521f49 | 158 | block_t blkno = start; |
662befda | 159 | struct f2fs_io_info fio = { |
05ca3632 | 160 | .sbi = sbi, |
662befda | 161 | .type = META, |
04d328de | 162 | .op = REQ_OP_READ, |
70fd7614 | 163 | .op_flags = sync ? (REQ_META | REQ_PRIO) : REQ_RAHEAD, |
4375a336 | 164 | .encrypted_page = NULL, |
662befda | 165 | }; |
e9f5b8b8 | 166 | struct blk_plug plug; |
662befda | 167 | |
2b947003 | 168 | if (unlikely(type == META_POR)) |
04d328de | 169 | fio.op_flags &= ~REQ_META; |
2b947003 | 170 | |
e9f5b8b8 | 171 | blk_start_plug(&plug); |
662befda | 172 | for (; nrpages-- > 0; blkno++) { |
662befda | 173 | |
66b00c18 CY |
174 | if (!is_valid_blkaddr(sbi, blkno, type)) |
175 | goto out; | |
176 | ||
662befda CY |
177 | switch (type) { |
178 | case META_NAT: | |
66b00c18 CY |
179 | if (unlikely(blkno >= |
180 | NAT_BLOCK_OFFSET(NM_I(sbi)->max_nid))) | |
662befda | 181 | blkno = 0; |
66b00c18 | 182 | /* get nat block addr */ |
7a9d7548 | 183 | fio.new_blkaddr = current_nat_addr(sbi, |
662befda CY |
184 | blkno * NAT_ENTRY_PER_BLOCK); |
185 | break; | |
186 | case META_SIT: | |
187 | /* get sit block addr */ | |
7a9d7548 | 188 | fio.new_blkaddr = current_sit_addr(sbi, |
662befda | 189 | blkno * SIT_ENTRY_PER_BLOCK); |
662befda | 190 | break; |
81c1a0f1 | 191 | case META_SSA: |
662befda | 192 | case META_CP: |
4c521f49 | 193 | case META_POR: |
7a9d7548 | 194 | fio.new_blkaddr = blkno; |
662befda CY |
195 | break; |
196 | default: | |
197 | BUG(); | |
198 | } | |
199 | ||
300e129c JK |
200 | page = f2fs_grab_cache_page(META_MAPPING(sbi), |
201 | fio.new_blkaddr, false); | |
662befda CY |
202 | if (!page) |
203 | continue; | |
204 | if (PageUptodate(page)) { | |
662befda CY |
205 | f2fs_put_page(page, 1); |
206 | continue; | |
207 | } | |
208 | ||
05ca3632 | 209 | fio.page = page; |
1919ffc0 | 210 | f2fs_submit_page_bio(&fio); |
662befda CY |
211 | f2fs_put_page(page, 0); |
212 | } | |
213 | out: | |
e9f5b8b8 | 214 | blk_finish_plug(&plug); |
662befda CY |
215 | return blkno - start; |
216 | } | |
217 | ||
635aee1f CY |
218 | void ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index) |
219 | { | |
220 | struct page *page; | |
221 | bool readahead = false; | |
222 | ||
223 | page = find_get_page(META_MAPPING(sbi), index); | |
4da7bf5a | 224 | if (!page || !PageUptodate(page)) |
635aee1f CY |
225 | readahead = true; |
226 | f2fs_put_page(page, 0); | |
227 | ||
228 | if (readahead) | |
664ba972 | 229 | ra_meta_pages(sbi, index, BIO_MAX_PAGES, META_POR, true); |
635aee1f CY |
230 | } |
231 | ||
127e670a JK |
232 | static int f2fs_write_meta_page(struct page *page, |
233 | struct writeback_control *wbc) | |
234 | { | |
4081363f | 235 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); |
127e670a | 236 | |
ecda0de3 CY |
237 | trace_f2fs_writepage(page, META); |
238 | ||
caf0047e | 239 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
cfb271d4 | 240 | goto redirty_out; |
857dc4e0 | 241 | if (wbc->for_reclaim && page->index < GET_SUM_BLOCK(sbi, 0)) |
cfb271d4 | 242 | goto redirty_out; |
1e968fdf | 243 | if (unlikely(f2fs_cp_error(sbi))) |
cf779cab | 244 | goto redirty_out; |
127e670a | 245 | |
577e3495 JK |
246 | write_meta_page(sbi, page); |
247 | dec_page_count(sbi, F2FS_DIRTY_META); | |
0c3a5797 CY |
248 | |
249 | if (wbc->for_reclaim) | |
942fd319 JK |
250 | f2fs_submit_merged_bio_cond(sbi, page->mapping->host, |
251 | 0, page->index, META, WRITE); | |
0c3a5797 | 252 | |
577e3495 | 253 | unlock_page(page); |
857dc4e0 | 254 | |
0c3a5797 | 255 | if (unlikely(f2fs_cp_error(sbi))) |
857dc4e0 | 256 | f2fs_submit_merged_bio(sbi, META, WRITE); |
0c3a5797 | 257 | |
577e3495 | 258 | return 0; |
cfb271d4 CY |
259 | |
260 | redirty_out: | |
76f60268 | 261 | redirty_page_for_writepage(wbc, page); |
cfb271d4 | 262 | return AOP_WRITEPAGE_ACTIVATE; |
127e670a JK |
263 | } |
264 | ||
265 | static int f2fs_write_meta_pages(struct address_space *mapping, | |
266 | struct writeback_control *wbc) | |
267 | { | |
4081363f | 268 | struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); |
50c8cdb3 | 269 | long diff, written; |
127e670a | 270 | |
5459aa97 | 271 | /* collect a number of dirty meta pages and write together */ |
50c8cdb3 JK |
272 | if (wbc->for_kupdate || |
273 | get_pages(sbi, F2FS_DIRTY_META) < nr_pages_to_skip(sbi, META)) | |
d3baf95d | 274 | goto skip_write; |
127e670a | 275 | |
a29d0e0b YH |
276 | /* if locked failed, cp will flush dirty pages instead */ |
277 | if (!mutex_trylock(&sbi->cp_mutex)) | |
278 | goto skip_write; | |
d31c7c3f | 279 | |
a29d0e0b | 280 | trace_f2fs_writepages(mapping->host, wbc, META); |
50c8cdb3 JK |
281 | diff = nr_pages_to_write(sbi, META, wbc); |
282 | written = sync_meta_pages(sbi, META, wbc->nr_to_write); | |
127e670a | 283 | mutex_unlock(&sbi->cp_mutex); |
50c8cdb3 | 284 | wbc->nr_to_write = max((long)0, wbc->nr_to_write - written - diff); |
127e670a | 285 | return 0; |
d3baf95d JK |
286 | |
287 | skip_write: | |
288 | wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_META); | |
d31c7c3f | 289 | trace_f2fs_writepages(mapping->host, wbc, META); |
d3baf95d | 290 | return 0; |
127e670a JK |
291 | } |
292 | ||
293 | long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type, | |
294 | long nr_to_write) | |
295 | { | |
9df27d98 | 296 | struct address_space *mapping = META_MAPPING(sbi); |
80dd9c0e | 297 | pgoff_t index = 0, end = ULONG_MAX, prev = ULONG_MAX; |
127e670a JK |
298 | struct pagevec pvec; |
299 | long nwritten = 0; | |
300 | struct writeback_control wbc = { | |
301 | .for_reclaim = 0, | |
302 | }; | |
e9f5b8b8 | 303 | struct blk_plug plug; |
127e670a JK |
304 | |
305 | pagevec_init(&pvec, 0); | |
306 | ||
e9f5b8b8 CY |
307 | blk_start_plug(&plug); |
308 | ||
127e670a JK |
309 | while (index <= end) { |
310 | int i, nr_pages; | |
311 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &index, | |
312 | PAGECACHE_TAG_DIRTY, | |
313 | min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); | |
cfb271d4 | 314 | if (unlikely(nr_pages == 0)) |
127e670a JK |
315 | break; |
316 | ||
317 | for (i = 0; i < nr_pages; i++) { | |
318 | struct page *page = pvec.pages[i]; | |
203681f6 | 319 | |
80dd9c0e | 320 | if (prev == ULONG_MAX) |
6066d8cd JK |
321 | prev = page->index - 1; |
322 | if (nr_to_write != LONG_MAX && page->index != prev + 1) { | |
323 | pagevec_release(&pvec); | |
324 | goto stop; | |
325 | } | |
326 | ||
127e670a | 327 | lock_page(page); |
203681f6 JK |
328 | |
329 | if (unlikely(page->mapping != mapping)) { | |
330 | continue_unlock: | |
331 | unlock_page(page); | |
332 | continue; | |
333 | } | |
334 | if (!PageDirty(page)) { | |
335 | /* someone wrote it for us */ | |
336 | goto continue_unlock; | |
337 | } | |
338 | ||
fa3d2bdf JK |
339 | f2fs_wait_on_page_writeback(page, META, true); |
340 | ||
341 | BUG_ON(PageWriteback(page)); | |
203681f6 JK |
342 | if (!clear_page_dirty_for_io(page)) |
343 | goto continue_unlock; | |
344 | ||
97dc3fd2 | 345 | if (mapping->a_ops->writepage(page, &wbc)) { |
577e3495 JK |
346 | unlock_page(page); |
347 | break; | |
348 | } | |
cfb271d4 | 349 | nwritten++; |
6066d8cd | 350 | prev = page->index; |
cfb271d4 | 351 | if (unlikely(nwritten >= nr_to_write)) |
127e670a JK |
352 | break; |
353 | } | |
354 | pagevec_release(&pvec); | |
355 | cond_resched(); | |
356 | } | |
6066d8cd | 357 | stop: |
127e670a | 358 | if (nwritten) |
458e6197 | 359 | f2fs_submit_merged_bio(sbi, type, WRITE); |
127e670a | 360 | |
e9f5b8b8 CY |
361 | blk_finish_plug(&plug); |
362 | ||
127e670a JK |
363 | return nwritten; |
364 | } | |
365 | ||
366 | static int f2fs_set_meta_page_dirty(struct page *page) | |
367 | { | |
26c6b887 JK |
368 | trace_f2fs_set_page_dirty(page, META); |
369 | ||
237c0790 JK |
370 | if (!PageUptodate(page)) |
371 | SetPageUptodate(page); | |
127e670a | 372 | if (!PageDirty(page)) { |
fe76b796 | 373 | f2fs_set_page_dirty_nobuffers(page); |
4081363f | 374 | inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_META); |
1601839e | 375 | SetPagePrivate(page); |
9e4ded3f | 376 | f2fs_trace_pid(page); |
127e670a JK |
377 | return 1; |
378 | } | |
379 | return 0; | |
380 | } | |
381 | ||
382 | const struct address_space_operations f2fs_meta_aops = { | |
383 | .writepage = f2fs_write_meta_page, | |
384 | .writepages = f2fs_write_meta_pages, | |
385 | .set_page_dirty = f2fs_set_meta_page_dirty, | |
487261f3 CY |
386 | .invalidatepage = f2fs_invalidate_page, |
387 | .releasepage = f2fs_release_page, | |
5b7a487c WG |
388 | #ifdef CONFIG_MIGRATION |
389 | .migratepage = f2fs_migrate_page, | |
390 | #endif | |
127e670a JK |
391 | }; |
392 | ||
6451e041 | 393 | static void __add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
953e6cc6 | 394 | { |
67298804 | 395 | struct inode_management *im = &sbi->im[type]; |
80c54505 JK |
396 | struct ino_entry *e, *tmp; |
397 | ||
398 | tmp = f2fs_kmem_cache_alloc(ino_entry_slab, GFP_NOFS); | |
39efac41 | 399 | retry: |
80c54505 | 400 | radix_tree_preload(GFP_NOFS | __GFP_NOFAIL); |
769ec6e5 | 401 | |
67298804 | 402 | spin_lock(&im->ino_lock); |
67298804 | 403 | e = radix_tree_lookup(&im->ino_root, ino); |
39efac41 | 404 | if (!e) { |
80c54505 | 405 | e = tmp; |
67298804 CY |
406 | if (radix_tree_insert(&im->ino_root, ino, e)) { |
407 | spin_unlock(&im->ino_lock); | |
769ec6e5 | 408 | radix_tree_preload_end(); |
39efac41 JK |
409 | goto retry; |
410 | } | |
411 | memset(e, 0, sizeof(struct ino_entry)); | |
412 | e->ino = ino; | |
953e6cc6 | 413 | |
67298804 | 414 | list_add_tail(&e->list, &im->ino_list); |
8c402946 | 415 | if (type != ORPHAN_INO) |
67298804 | 416 | im->ino_num++; |
39efac41 | 417 | } |
67298804 | 418 | spin_unlock(&im->ino_lock); |
769ec6e5 | 419 | radix_tree_preload_end(); |
80c54505 JK |
420 | |
421 | if (e != tmp) | |
422 | kmem_cache_free(ino_entry_slab, tmp); | |
953e6cc6 JK |
423 | } |
424 | ||
6451e041 | 425 | static void __remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
953e6cc6 | 426 | { |
67298804 | 427 | struct inode_management *im = &sbi->im[type]; |
6451e041 | 428 | struct ino_entry *e; |
953e6cc6 | 429 | |
67298804 CY |
430 | spin_lock(&im->ino_lock); |
431 | e = radix_tree_lookup(&im->ino_root, ino); | |
39efac41 JK |
432 | if (e) { |
433 | list_del(&e->list); | |
67298804 CY |
434 | radix_tree_delete(&im->ino_root, ino); |
435 | im->ino_num--; | |
436 | spin_unlock(&im->ino_lock); | |
39efac41 JK |
437 | kmem_cache_free(ino_entry_slab, e); |
438 | return; | |
953e6cc6 | 439 | } |
67298804 | 440 | spin_unlock(&im->ino_lock); |
953e6cc6 JK |
441 | } |
442 | ||
a49324f1 | 443 | void add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
fff04f90 JK |
444 | { |
445 | /* add new dirty ino entry into list */ | |
446 | __add_ino_entry(sbi, ino, type); | |
447 | } | |
448 | ||
a49324f1 | 449 | void remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
fff04f90 JK |
450 | { |
451 | /* remove dirty ino entry from list */ | |
452 | __remove_ino_entry(sbi, ino, type); | |
453 | } | |
454 | ||
455 | /* mode should be APPEND_INO or UPDATE_INO */ | |
456 | bool exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode) | |
457 | { | |
67298804 | 458 | struct inode_management *im = &sbi->im[mode]; |
fff04f90 | 459 | struct ino_entry *e; |
67298804 CY |
460 | |
461 | spin_lock(&im->ino_lock); | |
462 | e = radix_tree_lookup(&im->ino_root, ino); | |
463 | spin_unlock(&im->ino_lock); | |
fff04f90 JK |
464 | return e ? true : false; |
465 | } | |
466 | ||
74ef9241 | 467 | void release_ino_entry(struct f2fs_sb_info *sbi, bool all) |
fff04f90 JK |
468 | { |
469 | struct ino_entry *e, *tmp; | |
470 | int i; | |
471 | ||
74ef9241 | 472 | for (i = all ? ORPHAN_INO: APPEND_INO; i <= UPDATE_INO; i++) { |
67298804 CY |
473 | struct inode_management *im = &sbi->im[i]; |
474 | ||
475 | spin_lock(&im->ino_lock); | |
476 | list_for_each_entry_safe(e, tmp, &im->ino_list, list) { | |
fff04f90 | 477 | list_del(&e->list); |
67298804 | 478 | radix_tree_delete(&im->ino_root, e->ino); |
fff04f90 | 479 | kmem_cache_free(ino_entry_slab, e); |
67298804 | 480 | im->ino_num--; |
fff04f90 | 481 | } |
67298804 | 482 | spin_unlock(&im->ino_lock); |
fff04f90 JK |
483 | } |
484 | } | |
485 | ||
cbd56e7d | 486 | int acquire_orphan_inode(struct f2fs_sb_info *sbi) |
127e670a | 487 | { |
67298804 | 488 | struct inode_management *im = &sbi->im[ORPHAN_INO]; |
127e670a JK |
489 | int err = 0; |
490 | ||
67298804 | 491 | spin_lock(&im->ino_lock); |
cb78942b JK |
492 | |
493 | #ifdef CONFIG_F2FS_FAULT_INJECTION | |
1ecc0c5c | 494 | if (time_to_inject(sbi, FAULT_ORPHAN)) { |
cb78942b | 495 | spin_unlock(&im->ino_lock); |
55523519 | 496 | f2fs_show_injection_info(FAULT_ORPHAN); |
cb78942b JK |
497 | return -ENOSPC; |
498 | } | |
499 | #endif | |
67298804 | 500 | if (unlikely(im->ino_num >= sbi->max_orphans)) |
127e670a | 501 | err = -ENOSPC; |
cbd56e7d | 502 | else |
67298804 CY |
503 | im->ino_num++; |
504 | spin_unlock(&im->ino_lock); | |
0d47c1ad | 505 | |
127e670a JK |
506 | return err; |
507 | } | |
508 | ||
cbd56e7d JK |
509 | void release_orphan_inode(struct f2fs_sb_info *sbi) |
510 | { | |
67298804 CY |
511 | struct inode_management *im = &sbi->im[ORPHAN_INO]; |
512 | ||
513 | spin_lock(&im->ino_lock); | |
514 | f2fs_bug_on(sbi, im->ino_num == 0); | |
515 | im->ino_num--; | |
516 | spin_unlock(&im->ino_lock); | |
cbd56e7d JK |
517 | } |
518 | ||
67c3758d | 519 | void add_orphan_inode(struct inode *inode) |
127e670a | 520 | { |
39efac41 | 521 | /* add new orphan ino entry into list */ |
67c3758d JK |
522 | __add_ino_entry(F2FS_I_SB(inode), inode->i_ino, ORPHAN_INO); |
523 | update_inode_page(inode); | |
127e670a JK |
524 | } |
525 | ||
526 | void remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) | |
527 | { | |
953e6cc6 | 528 | /* remove orphan entry from orphan list */ |
6451e041 | 529 | __remove_ino_entry(sbi, ino, ORPHAN_INO); |
127e670a JK |
530 | } |
531 | ||
8c14bfad | 532 | static int recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) |
127e670a | 533 | { |
8c14bfad | 534 | struct inode *inode; |
5905f9af | 535 | struct node_info ni; |
d41065e2 JK |
536 | int err = acquire_orphan_inode(sbi); |
537 | ||
538 | if (err) { | |
539 | set_sbi_flag(sbi, SBI_NEED_FSCK); | |
540 | f2fs_msg(sbi->sb, KERN_WARNING, | |
541 | "%s: orphan failed (ino=%x), run fsck to fix.", | |
542 | __func__, ino); | |
543 | return err; | |
544 | } | |
545 | ||
546 | __add_ino_entry(sbi, ino, ORPHAN_INO); | |
8c14bfad | 547 | |
5905f9af | 548 | inode = f2fs_iget_retry(sbi->sb, ino); |
8c14bfad CY |
549 | if (IS_ERR(inode)) { |
550 | /* | |
551 | * there should be a bug that we can't find the entry | |
552 | * to orphan inode. | |
553 | */ | |
554 | f2fs_bug_on(sbi, PTR_ERR(inode) == -ENOENT); | |
555 | return PTR_ERR(inode); | |
556 | } | |
557 | ||
127e670a JK |
558 | clear_nlink(inode); |
559 | ||
560 | /* truncate all the data during iput */ | |
561 | iput(inode); | |
5905f9af JK |
562 | |
563 | get_node_info(sbi, ino, &ni); | |
564 | ||
565 | /* ENOMEM was fully retried in f2fs_evict_inode. */ | |
566 | if (ni.blk_addr != NULL_ADDR) { | |
d41065e2 JK |
567 | set_sbi_flag(sbi, SBI_NEED_FSCK); |
568 | f2fs_msg(sbi->sb, KERN_WARNING, | |
5ce4738a | 569 | "%s: orphan failed (ino=%x) by kernel, retry mount.", |
d41065e2 JK |
570 | __func__, ino); |
571 | return -EIO; | |
5905f9af | 572 | } |
d41065e2 | 573 | __remove_ino_entry(sbi, ino, ORPHAN_INO); |
8c14bfad | 574 | return 0; |
127e670a JK |
575 | } |
576 | ||
8c14bfad | 577 | int recover_orphan_inodes(struct f2fs_sb_info *sbi) |
127e670a | 578 | { |
3c642985 | 579 | block_t start_blk, orphan_blocks, i, j; |
8c14bfad | 580 | int err; |
127e670a | 581 | |
aaec2b1d | 582 | if (!is_set_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG)) |
8c14bfad | 583 | return 0; |
127e670a | 584 | |
55141486 | 585 | start_blk = __start_cp_addr(sbi) + 1 + __cp_payload(sbi); |
3c642985 | 586 | orphan_blocks = __start_sum_addr(sbi) - 1 - __cp_payload(sbi); |
127e670a | 587 | |
26879fb1 | 588 | ra_meta_pages(sbi, start_blk, orphan_blocks, META_CP, true); |
662befda | 589 | |
3c642985 | 590 | for (i = 0; i < orphan_blocks; i++) { |
127e670a JK |
591 | struct page *page = get_meta_page(sbi, start_blk + i); |
592 | struct f2fs_orphan_block *orphan_blk; | |
593 | ||
594 | orphan_blk = (struct f2fs_orphan_block *)page_address(page); | |
595 | for (j = 0; j < le32_to_cpu(orphan_blk->entry_count); j++) { | |
596 | nid_t ino = le32_to_cpu(orphan_blk->ino[j]); | |
8c14bfad CY |
597 | err = recover_orphan_inode(sbi, ino); |
598 | if (err) { | |
599 | f2fs_put_page(page, 1); | |
8c14bfad CY |
600 | return err; |
601 | } | |
127e670a JK |
602 | } |
603 | f2fs_put_page(page, 1); | |
604 | } | |
605 | /* clear Orphan Flag */ | |
aaec2b1d | 606 | clear_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG); |
8c14bfad | 607 | return 0; |
127e670a JK |
608 | } |
609 | ||
610 | static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk) | |
611 | { | |
502c6e0b | 612 | struct list_head *head; |
127e670a | 613 | struct f2fs_orphan_block *orphan_blk = NULL; |
127e670a | 614 | unsigned int nentries = 0; |
bd936f84 | 615 | unsigned short index = 1; |
8c402946 | 616 | unsigned short orphan_blocks; |
4531929e | 617 | struct page *page = NULL; |
6451e041 | 618 | struct ino_entry *orphan = NULL; |
67298804 | 619 | struct inode_management *im = &sbi->im[ORPHAN_INO]; |
127e670a | 620 | |
67298804 | 621 | orphan_blocks = GET_ORPHAN_BLOCKS(im->ino_num); |
8c402946 | 622 | |
d6c67a4f JK |
623 | /* |
624 | * we don't need to do spin_lock(&im->ino_lock) here, since all the | |
625 | * orphan inode operations are covered under f2fs_lock_op(). | |
626 | * And, spin_lock should be avoided due to page operations below. | |
627 | */ | |
67298804 | 628 | head = &im->ino_list; |
127e670a JK |
629 | |
630 | /* loop for each orphan inode entry and write them in Jornal block */ | |
502c6e0b GZ |
631 | list_for_each_entry(orphan, head, list) { |
632 | if (!page) { | |
bd936f84 | 633 | page = grab_meta_page(sbi, start_blk++); |
502c6e0b GZ |
634 | orphan_blk = |
635 | (struct f2fs_orphan_block *)page_address(page); | |
636 | memset(orphan_blk, 0, sizeof(*orphan_blk)); | |
637 | } | |
127e670a | 638 | |
36795567 | 639 | orphan_blk->ino[nentries++] = cpu_to_le32(orphan->ino); |
127e670a | 640 | |
36795567 | 641 | if (nentries == F2FS_ORPHANS_PER_BLOCK) { |
127e670a JK |
642 | /* |
643 | * an orphan block is full of 1020 entries, | |
644 | * then we need to flush current orphan blocks | |
645 | * and bring another one in memory | |
646 | */ | |
647 | orphan_blk->blk_addr = cpu_to_le16(index); | |
648 | orphan_blk->blk_count = cpu_to_le16(orphan_blocks); | |
649 | orphan_blk->entry_count = cpu_to_le32(nentries); | |
650 | set_page_dirty(page); | |
651 | f2fs_put_page(page, 1); | |
652 | index++; | |
127e670a JK |
653 | nentries = 0; |
654 | page = NULL; | |
655 | } | |
502c6e0b | 656 | } |
127e670a | 657 | |
502c6e0b GZ |
658 | if (page) { |
659 | orphan_blk->blk_addr = cpu_to_le16(index); | |
660 | orphan_blk->blk_count = cpu_to_le16(orphan_blocks); | |
661 | orphan_blk->entry_count = cpu_to_le32(nentries); | |
662 | set_page_dirty(page); | |
663 | f2fs_put_page(page, 1); | |
127e670a | 664 | } |
127e670a JK |
665 | } |
666 | ||
fc0065ad TY |
667 | static int get_checkpoint_version(struct f2fs_sb_info *sbi, block_t cp_addr, |
668 | struct f2fs_checkpoint **cp_block, struct page **cp_page, | |
669 | unsigned long long *version) | |
127e670a | 670 | { |
127e670a | 671 | unsigned long blk_size = sbi->blocksize; |
fc0065ad | 672 | size_t crc_offset = 0; |
7e586fa0 | 673 | __u32 crc = 0; |
127e670a | 674 | |
fc0065ad TY |
675 | *cp_page = get_meta_page(sbi, cp_addr); |
676 | *cp_block = (struct f2fs_checkpoint *)page_address(*cp_page); | |
127e670a | 677 | |
fc0065ad | 678 | crc_offset = le32_to_cpu((*cp_block)->checksum_offset); |
c6f89dfd | 679 | if (crc_offset > (blk_size - sizeof(__le32))) { |
fc0065ad TY |
680 | f2fs_msg(sbi->sb, KERN_WARNING, |
681 | "invalid crc_offset: %zu", crc_offset); | |
682 | return -EINVAL; | |
683 | } | |
127e670a | 684 | |
ced2c7ea | 685 | crc = cur_cp_crc(*cp_block); |
fc0065ad TY |
686 | if (!f2fs_crc_valid(sbi, crc, *cp_block, crc_offset)) { |
687 | f2fs_msg(sbi->sb, KERN_WARNING, "invalid crc value"); | |
688 | return -EINVAL; | |
689 | } | |
127e670a | 690 | |
fc0065ad TY |
691 | *version = cur_cp_version(*cp_block); |
692 | return 0; | |
693 | } | |
127e670a | 694 | |
fc0065ad TY |
695 | static struct page *validate_checkpoint(struct f2fs_sb_info *sbi, |
696 | block_t cp_addr, unsigned long long *version) | |
697 | { | |
698 | struct page *cp_page_1 = NULL, *cp_page_2 = NULL; | |
699 | struct f2fs_checkpoint *cp_block = NULL; | |
700 | unsigned long long cur_version = 0, pre_version = 0; | |
701 | int err; | |
127e670a | 702 | |
fc0065ad TY |
703 | err = get_checkpoint_version(sbi, cp_addr, &cp_block, |
704 | &cp_page_1, version); | |
705 | if (err) | |
706 | goto invalid_cp1; | |
707 | pre_version = *version; | |
127e670a | 708 | |
fc0065ad TY |
709 | cp_addr += le32_to_cpu(cp_block->cp_pack_total_block_count) - 1; |
710 | err = get_checkpoint_version(sbi, cp_addr, &cp_block, | |
711 | &cp_page_2, version); | |
712 | if (err) | |
127e670a | 713 | goto invalid_cp2; |
fc0065ad | 714 | cur_version = *version; |
127e670a JK |
715 | |
716 | if (cur_version == pre_version) { | |
717 | *version = cur_version; | |
718 | f2fs_put_page(cp_page_2, 1); | |
719 | return cp_page_1; | |
720 | } | |
721 | invalid_cp2: | |
722 | f2fs_put_page(cp_page_2, 1); | |
723 | invalid_cp1: | |
724 | f2fs_put_page(cp_page_1, 1); | |
725 | return NULL; | |
726 | } | |
727 | ||
728 | int get_valid_checkpoint(struct f2fs_sb_info *sbi) | |
729 | { | |
730 | struct f2fs_checkpoint *cp_block; | |
731 | struct f2fs_super_block *fsb = sbi->raw_super; | |
732 | struct page *cp1, *cp2, *cur_page; | |
733 | unsigned long blk_size = sbi->blocksize; | |
734 | unsigned long long cp1_version = 0, cp2_version = 0; | |
735 | unsigned long long cp_start_blk_no; | |
55141486 | 736 | unsigned int cp_blks = 1 + __cp_payload(sbi); |
1dbe4152 CL |
737 | block_t cp_blk_no; |
738 | int i; | |
127e670a | 739 | |
1dbe4152 | 740 | sbi->ckpt = kzalloc(cp_blks * blk_size, GFP_KERNEL); |
127e670a JK |
741 | if (!sbi->ckpt) |
742 | return -ENOMEM; | |
743 | /* | |
744 | * Finding out valid cp block involves read both | |
745 | * sets( cp pack1 and cp pack 2) | |
746 | */ | |
747 | cp_start_blk_no = le32_to_cpu(fsb->cp_blkaddr); | |
748 | cp1 = validate_checkpoint(sbi, cp_start_blk_no, &cp1_version); | |
749 | ||
750 | /* The second checkpoint pack should start at the next segment */ | |
f9a4e6df JK |
751 | cp_start_blk_no += ((unsigned long long)1) << |
752 | le32_to_cpu(fsb->log_blocks_per_seg); | |
127e670a JK |
753 | cp2 = validate_checkpoint(sbi, cp_start_blk_no, &cp2_version); |
754 | ||
755 | if (cp1 && cp2) { | |
756 | if (ver_after(cp2_version, cp1_version)) | |
757 | cur_page = cp2; | |
758 | else | |
759 | cur_page = cp1; | |
760 | } else if (cp1) { | |
761 | cur_page = cp1; | |
762 | } else if (cp2) { | |
763 | cur_page = cp2; | |
764 | } else { | |
765 | goto fail_no_cp; | |
766 | } | |
767 | ||
768 | cp_block = (struct f2fs_checkpoint *)page_address(cur_page); | |
769 | memcpy(sbi->ckpt, cp_block, blk_size); | |
770 | ||
984ec63c SL |
771 | /* Sanity checking of checkpoint */ |
772 | if (sanity_check_ckpt(sbi)) | |
a2125ff7 | 773 | goto free_fail_no_cp; |
984ec63c | 774 | |
8508e44a JK |
775 | if (cur_page == cp1) |
776 | sbi->cur_cp_pack = 1; | |
777 | else | |
778 | sbi->cur_cp_pack = 2; | |
984ec63c | 779 | |
1dbe4152 CL |
780 | if (cp_blks <= 1) |
781 | goto done; | |
782 | ||
783 | cp_blk_no = le32_to_cpu(fsb->cp_blkaddr); | |
784 | if (cur_page == cp2) | |
785 | cp_blk_no += 1 << le32_to_cpu(fsb->log_blocks_per_seg); | |
786 | ||
787 | for (i = 1; i < cp_blks; i++) { | |
788 | void *sit_bitmap_ptr; | |
789 | unsigned char *ckpt = (unsigned char *)sbi->ckpt; | |
790 | ||
791 | cur_page = get_meta_page(sbi, cp_blk_no + i); | |
792 | sit_bitmap_ptr = page_address(cur_page); | |
793 | memcpy(ckpt + i * blk_size, sit_bitmap_ptr, blk_size); | |
794 | f2fs_put_page(cur_page, 1); | |
795 | } | |
796 | done: | |
127e670a JK |
797 | f2fs_put_page(cp1, 1); |
798 | f2fs_put_page(cp2, 1); | |
799 | return 0; | |
800 | ||
a2125ff7 JK |
801 | free_fail_no_cp: |
802 | f2fs_put_page(cp1, 1); | |
803 | f2fs_put_page(cp2, 1); | |
127e670a JK |
804 | fail_no_cp: |
805 | kfree(sbi->ckpt); | |
806 | return -EINVAL; | |
807 | } | |
808 | ||
c227f912 | 809 | static void __add_dirty_inode(struct inode *inode, enum inode_type type) |
127e670a | 810 | { |
4081363f | 811 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
c227f912 | 812 | int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE; |
127e670a | 813 | |
91942321 | 814 | if (is_inode_flag_set(inode, flag)) |
2710fd7e | 815 | return; |
2d7b822a | 816 | |
91942321 | 817 | set_inode_flag(inode, flag); |
99f4b917 CY |
818 | if (!f2fs_is_volatile_file(inode)) |
819 | list_add_tail(&F2FS_I(inode)->dirty_list, | |
820 | &sbi->inode_list[type]); | |
33fbd510 | 821 | stat_inc_dirty_inode(sbi, type); |
5deb8267 JK |
822 | } |
823 | ||
c227f912 | 824 | static void __remove_dirty_inode(struct inode *inode, enum inode_type type) |
6ad7609a | 825 | { |
c227f912 | 826 | int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE; |
6ad7609a | 827 | |
91942321 | 828 | if (get_dirty_pages(inode) || !is_inode_flag_set(inode, flag)) |
6ad7609a CY |
829 | return; |
830 | ||
91942321 JK |
831 | list_del_init(&F2FS_I(inode)->dirty_list); |
832 | clear_inode_flag(inode, flag); | |
33fbd510 | 833 | stat_dec_dirty_inode(F2FS_I_SB(inode), type); |
6ad7609a CY |
834 | } |
835 | ||
a7ffdbe2 | 836 | void update_dirty_page(struct inode *inode, struct page *page) |
5deb8267 | 837 | { |
4081363f | 838 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
c227f912 | 839 | enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE; |
5deb8267 | 840 | |
5ac9f36f CY |
841 | if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) && |
842 | !S_ISLNK(inode->i_mode)) | |
127e670a | 843 | return; |
7bd59381 | 844 | |
1c4bf763 JK |
845 | spin_lock(&sbi->inode_lock[type]); |
846 | if (type != FILE_INODE || test_opt(sbi, DATA_FLUSH)) | |
10aa97c3 | 847 | __add_dirty_inode(inode, type); |
b951a4ec | 848 | inode_inc_dirty_pages(inode); |
1c4bf763 JK |
849 | spin_unlock(&sbi->inode_lock[type]); |
850 | ||
a7ffdbe2 | 851 | SetPagePrivate(page); |
9e4ded3f | 852 | f2fs_trace_pid(page); |
5deb8267 JK |
853 | } |
854 | ||
c227f912 | 855 | void remove_dirty_inode(struct inode *inode) |
127e670a | 856 | { |
4081363f | 857 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
c227f912 | 858 | enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE; |
127e670a | 859 | |
c227f912 CY |
860 | if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) && |
861 | !S_ISLNK(inode->i_mode)) | |
127e670a JK |
862 | return; |
863 | ||
10aa97c3 JK |
864 | if (type == FILE_INODE && !test_opt(sbi, DATA_FLUSH)) |
865 | return; | |
866 | ||
c227f912 CY |
867 | spin_lock(&sbi->inode_lock[type]); |
868 | __remove_dirty_inode(inode, type); | |
869 | spin_unlock(&sbi->inode_lock[type]); | |
74d0b917 JK |
870 | } |
871 | ||
6d5a1495 | 872 | int sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type) |
127e670a | 873 | { |
ce3b7d80 | 874 | struct list_head *head; |
127e670a | 875 | struct inode *inode; |
2710fd7e | 876 | struct f2fs_inode_info *fi; |
4cf18537 CY |
877 | bool is_dir = (type == DIR_INODE); |
878 | ||
879 | trace_f2fs_sync_dirty_inodes_enter(sbi->sb, is_dir, | |
880 | get_pages(sbi, is_dir ? | |
881 | F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA)); | |
127e670a | 882 | retry: |
af41d3ee | 883 | if (unlikely(f2fs_cp_error(sbi))) |
6d5a1495 | 884 | return -EIO; |
af41d3ee | 885 | |
c227f912 | 886 | spin_lock(&sbi->inode_lock[type]); |
ce3b7d80 | 887 | |
c227f912 | 888 | head = &sbi->inode_list[type]; |
127e670a | 889 | if (list_empty(head)) { |
c227f912 | 890 | spin_unlock(&sbi->inode_lock[type]); |
4cf18537 CY |
891 | trace_f2fs_sync_dirty_inodes_exit(sbi->sb, is_dir, |
892 | get_pages(sbi, is_dir ? | |
893 | F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA)); | |
6d5a1495 | 894 | return 0; |
127e670a | 895 | } |
939afa94 | 896 | fi = list_first_entry(head, struct f2fs_inode_info, dirty_list); |
2710fd7e | 897 | inode = igrab(&fi->vfs_inode); |
c227f912 | 898 | spin_unlock(&sbi->inode_lock[type]); |
127e670a | 899 | if (inode) { |
87d6f890 | 900 | filemap_fdatawrite(inode->i_mapping); |
127e670a JK |
901 | iput(inode); |
902 | } else { | |
903 | /* | |
904 | * We should submit bio, since it exists several | |
905 | * wribacking dentry pages in the freeing inode. | |
906 | */ | |
458e6197 | 907 | f2fs_submit_merged_bio(sbi, DATA, WRITE); |
7ecebe5e | 908 | cond_resched(); |
127e670a JK |
909 | } |
910 | goto retry; | |
911 | } | |
912 | ||
0f18b462 JK |
913 | int f2fs_sync_inode_meta(struct f2fs_sb_info *sbi) |
914 | { | |
915 | struct list_head *head = &sbi->inode_list[DIRTY_META]; | |
916 | struct inode *inode; | |
917 | struct f2fs_inode_info *fi; | |
918 | s64 total = get_pages(sbi, F2FS_DIRTY_IMETA); | |
919 | ||
920 | while (total--) { | |
921 | if (unlikely(f2fs_cp_error(sbi))) | |
922 | return -EIO; | |
923 | ||
924 | spin_lock(&sbi->inode_lock[DIRTY_META]); | |
925 | if (list_empty(head)) { | |
926 | spin_unlock(&sbi->inode_lock[DIRTY_META]); | |
927 | return 0; | |
928 | } | |
939afa94 | 929 | fi = list_first_entry(head, struct f2fs_inode_info, |
0f18b462 JK |
930 | gdirty_list); |
931 | inode = igrab(&fi->vfs_inode); | |
932 | spin_unlock(&sbi->inode_lock[DIRTY_META]); | |
933 | if (inode) { | |
18340edc JK |
934 | sync_inode_metadata(inode, 0); |
935 | ||
936 | /* it's on eviction */ | |
937 | if (is_inode_flag_set(inode, FI_DIRTY_INODE)) | |
938 | update_inode_page(inode); | |
0f18b462 JK |
939 | iput(inode); |
940 | } | |
941 | }; | |
942 | return 0; | |
943 | } | |
944 | ||
59c9081b YH |
945 | static void __prepare_cp_block(struct f2fs_sb_info *sbi) |
946 | { | |
947 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
948 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
949 | nid_t last_nid = nm_i->next_scan_nid; | |
950 | ||
951 | next_free_nid(sbi, &last_nid); | |
952 | ckpt->valid_block_count = cpu_to_le64(valid_user_blocks(sbi)); | |
953 | ckpt->valid_node_count = cpu_to_le32(valid_node_count(sbi)); | |
954 | ckpt->valid_inode_count = cpu_to_le32(valid_inode_count(sbi)); | |
955 | ckpt->next_free_nid = cpu_to_le32(last_nid); | |
956 | } | |
957 | ||
0a8165d7 | 958 | /* |
127e670a JK |
959 | * Freeze all the FS-operations for checkpoint. |
960 | */ | |
cf779cab | 961 | static int block_operations(struct f2fs_sb_info *sbi) |
127e670a | 962 | { |
127e670a JK |
963 | struct writeback_control wbc = { |
964 | .sync_mode = WB_SYNC_ALL, | |
965 | .nr_to_write = LONG_MAX, | |
966 | .for_reclaim = 0, | |
967 | }; | |
c718379b | 968 | struct blk_plug plug; |
cf779cab | 969 | int err = 0; |
c718379b JK |
970 | |
971 | blk_start_plug(&plug); | |
972 | ||
39936837 | 973 | retry_flush_dents: |
e479556b | 974 | f2fs_lock_all(sbi); |
127e670a | 975 | /* write all the dirty dentry pages */ |
127e670a | 976 | if (get_pages(sbi, F2FS_DIRTY_DENTS)) { |
e479556b | 977 | f2fs_unlock_all(sbi); |
6d5a1495 CY |
978 | err = sync_dirty_inodes(sbi, DIR_INODE); |
979 | if (err) | |
cf779cab | 980 | goto out; |
30973883 | 981 | cond_resched(); |
39936837 | 982 | goto retry_flush_dents; |
127e670a JK |
983 | } |
984 | ||
59c9081b YH |
985 | /* |
986 | * POR: we should ensure that there are no dirty node pages | |
987 | * until finishing nat/sit flush. inode->i_blocks can be updated. | |
988 | */ | |
989 | down_write(&sbi->node_change); | |
990 | ||
0f18b462 | 991 | if (get_pages(sbi, F2FS_DIRTY_IMETA)) { |
59c9081b | 992 | up_write(&sbi->node_change); |
0f18b462 JK |
993 | f2fs_unlock_all(sbi); |
994 | err = f2fs_sync_inode_meta(sbi); | |
995 | if (err) | |
996 | goto out; | |
30973883 | 997 | cond_resched(); |
0f18b462 JK |
998 | goto retry_flush_dents; |
999 | } | |
1000 | ||
39936837 | 1001 | retry_flush_nodes: |
b3582c68 | 1002 | down_write(&sbi->node_write); |
127e670a JK |
1003 | |
1004 | if (get_pages(sbi, F2FS_DIRTY_NODES)) { | |
b3582c68 | 1005 | up_write(&sbi->node_write); |
52681375 | 1006 | err = sync_node_pages(sbi, &wbc); |
6d5a1495 | 1007 | if (err) { |
59c9081b | 1008 | up_write(&sbi->node_change); |
cf779cab | 1009 | f2fs_unlock_all(sbi); |
cf779cab JK |
1010 | goto out; |
1011 | } | |
30973883 | 1012 | cond_resched(); |
39936837 | 1013 | goto retry_flush_nodes; |
127e670a | 1014 | } |
59c9081b YH |
1015 | |
1016 | /* | |
1017 | * sbi->node_change is used only for AIO write_begin path which produces | |
1018 | * dirty node blocks and some checkpoint values by block allocation. | |
1019 | */ | |
1020 | __prepare_cp_block(sbi); | |
1021 | up_write(&sbi->node_change); | |
cf779cab | 1022 | out: |
c718379b | 1023 | blk_finish_plug(&plug); |
cf779cab | 1024 | return err; |
127e670a JK |
1025 | } |
1026 | ||
1027 | static void unblock_operations(struct f2fs_sb_info *sbi) | |
1028 | { | |
b3582c68 | 1029 | up_write(&sbi->node_write); |
e479556b | 1030 | f2fs_unlock_all(sbi); |
127e670a JK |
1031 | } |
1032 | ||
fb51b5ef CL |
1033 | static void wait_on_all_pages_writeback(struct f2fs_sb_info *sbi) |
1034 | { | |
1035 | DEFINE_WAIT(wait); | |
1036 | ||
1037 | for (;;) { | |
1038 | prepare_to_wait(&sbi->cp_wait, &wait, TASK_UNINTERRUPTIBLE); | |
1039 | ||
36951b38 | 1040 | if (!get_pages(sbi, F2FS_WB_CP_DATA)) |
fb51b5ef CL |
1041 | break; |
1042 | ||
0ff21646 | 1043 | io_schedule_timeout(5*HZ); |
fb51b5ef CL |
1044 | } |
1045 | finish_wait(&sbi->cp_wait, &wait); | |
1046 | } | |
1047 | ||
e4c5d848 JK |
1048 | static void update_ckpt_flags(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
1049 | { | |
1050 | unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num; | |
1051 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1052 | ||
1053 | spin_lock(&sbi->cp_lock); | |
1054 | ||
c473f1a9 | 1055 | if ((cpc->reason & CP_UMOUNT) && |
10047f53 | 1056 | le32_to_cpu(ckpt->cp_pack_total_block_count) > |
22ad0b6a JK |
1057 | sbi->blocks_per_seg - NM_I(sbi)->nat_bits_blocks) |
1058 | disable_nat_bits(sbi, false); | |
1059 | ||
1f43e2ad CY |
1060 | if (cpc->reason & CP_TRIMMED) |
1061 | __set_ckpt_flags(ckpt, CP_TRIMMED_FLAG); | |
1062 | ||
c473f1a9 | 1063 | if (cpc->reason & CP_UMOUNT) |
e4c5d848 JK |
1064 | __set_ckpt_flags(ckpt, CP_UMOUNT_FLAG); |
1065 | else | |
1066 | __clear_ckpt_flags(ckpt, CP_UMOUNT_FLAG); | |
1067 | ||
c473f1a9 | 1068 | if (cpc->reason & CP_FASTBOOT) |
e4c5d848 JK |
1069 | __set_ckpt_flags(ckpt, CP_FASTBOOT_FLAG); |
1070 | else | |
1071 | __clear_ckpt_flags(ckpt, CP_FASTBOOT_FLAG); | |
1072 | ||
1073 | if (orphan_num) | |
1074 | __set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); | |
1075 | else | |
1076 | __clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); | |
1077 | ||
1078 | if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) | |
1079 | __set_ckpt_flags(ckpt, CP_FSCK_FLAG); | |
1080 | ||
1081 | /* set this flag to activate crc|cp_ver for recovery */ | |
1082 | __set_ckpt_flags(ckpt, CP_CRC_RECOVERY_FLAG); | |
1083 | ||
1084 | spin_unlock(&sbi->cp_lock); | |
1085 | } | |
1086 | ||
c34f42e2 | 1087 | static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
127e670a JK |
1088 | { |
1089 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
77041823 | 1090 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
67298804 | 1091 | unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num; |
127e670a | 1092 | block_t start_blk; |
127e670a | 1093 | unsigned int data_sum_blocks, orphan_blocks; |
7e586fa0 | 1094 | __u32 crc32 = 0; |
127e670a | 1095 | int i; |
55141486 | 1096 | int cp_payload_blks = __cp_payload(sbi); |
8f1dbbbb SL |
1097 | struct super_block *sb = sbi->sb; |
1098 | struct curseg_info *seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE); | |
1099 | u64 kbytes_written; | |
127e670a JK |
1100 | |
1101 | /* Flush all the NAT/SIT pages */ | |
cf779cab | 1102 | while (get_pages(sbi, F2FS_DIRTY_META)) { |
127e670a | 1103 | sync_meta_pages(sbi, META, LONG_MAX); |
cf779cab | 1104 | if (unlikely(f2fs_cp_error(sbi))) |
c34f42e2 | 1105 | return -EIO; |
cf779cab | 1106 | } |
127e670a | 1107 | |
127e670a JK |
1108 | /* |
1109 | * modify checkpoint | |
1110 | * version number is already updated | |
1111 | */ | |
1112 | ckpt->elapsed_time = cpu_to_le64(get_mtime(sbi)); | |
127e670a | 1113 | ckpt->free_segment_count = cpu_to_le32(free_segments(sbi)); |
b5b82205 | 1114 | for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { |
127e670a JK |
1115 | ckpt->cur_node_segno[i] = |
1116 | cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_NODE)); | |
1117 | ckpt->cur_node_blkoff[i] = | |
1118 | cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_NODE)); | |
1119 | ckpt->alloc_type[i + CURSEG_HOT_NODE] = | |
1120 | curseg_alloc_type(sbi, i + CURSEG_HOT_NODE); | |
1121 | } | |
b5b82205 | 1122 | for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) { |
127e670a JK |
1123 | ckpt->cur_data_segno[i] = |
1124 | cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_DATA)); | |
1125 | ckpt->cur_data_blkoff[i] = | |
1126 | cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_DATA)); | |
1127 | ckpt->alloc_type[i + CURSEG_HOT_DATA] = | |
1128 | curseg_alloc_type(sbi, i + CURSEG_HOT_DATA); | |
1129 | } | |
1130 | ||
127e670a | 1131 | /* 2 cp + n data seg summary + orphan inode blocks */ |
3fa06d7b | 1132 | data_sum_blocks = npages_for_summary_flush(sbi, false); |
aaec2b1d | 1133 | spin_lock(&sbi->cp_lock); |
b5b82205 | 1134 | if (data_sum_blocks < NR_CURSEG_DATA_TYPE) |
aaec2b1d | 1135 | __set_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); |
127e670a | 1136 | else |
aaec2b1d CY |
1137 | __clear_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); |
1138 | spin_unlock(&sbi->cp_lock); | |
127e670a | 1139 | |
67298804 | 1140 | orphan_blocks = GET_ORPHAN_BLOCKS(orphan_num); |
1dbe4152 CL |
1141 | ckpt->cp_pack_start_sum = cpu_to_le32(1 + cp_payload_blks + |
1142 | orphan_blocks); | |
127e670a | 1143 | |
119ee914 | 1144 | if (__remain_node_summaries(cpc->reason)) |
b5b82205 | 1145 | ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS+ |
1dbe4152 CL |
1146 | cp_payload_blks + data_sum_blocks + |
1147 | orphan_blocks + NR_CURSEG_NODE_TYPE); | |
119ee914 | 1148 | else |
b5b82205 | 1149 | ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS + |
1dbe4152 CL |
1150 | cp_payload_blks + data_sum_blocks + |
1151 | orphan_blocks); | |
119ee914 | 1152 | |
e4c5d848 JK |
1153 | /* update ckpt flag for checkpoint */ |
1154 | update_ckpt_flags(sbi, cpc); | |
a468f0ef | 1155 | |
127e670a JK |
1156 | /* update SIT/NAT bitmap */ |
1157 | get_sit_bitmap(sbi, __bitmap_ptr(sbi, SIT_BITMAP)); | |
1158 | get_nat_bitmap(sbi, __bitmap_ptr(sbi, NAT_BITMAP)); | |
1159 | ||
43b6573b | 1160 | crc32 = f2fs_crc32(sbi, ckpt, le32_to_cpu(ckpt->checksum_offset)); |
7e586fa0 JK |
1161 | *((__le32 *)((unsigned char *)ckpt + |
1162 | le32_to_cpu(ckpt->checksum_offset))) | |
127e670a JK |
1163 | = cpu_to_le32(crc32); |
1164 | ||
8508e44a | 1165 | start_blk = __start_cp_next_addr(sbi); |
127e670a | 1166 | |
22ad0b6a JK |
1167 | /* write nat bits */ |
1168 | if (enabled_nat_bits(sbi, cpc)) { | |
1169 | __u64 cp_ver = cur_cp_version(ckpt); | |
22ad0b6a JK |
1170 | block_t blk; |
1171 | ||
1172 | cp_ver |= ((__u64)crc32 << 32); | |
1173 | *(__le64 *)nm_i->nat_bits = cpu_to_le64(cp_ver); | |
1174 | ||
1175 | blk = start_blk + sbi->blocks_per_seg - nm_i->nat_bits_blocks; | |
1176 | for (i = 0; i < nm_i->nat_bits_blocks; i++) | |
1177 | update_meta_page(sbi, nm_i->nat_bits + | |
1178 | (i << F2FS_BLKSIZE_BITS), blk + i); | |
1179 | ||
1180 | /* Flush all the NAT BITS pages */ | |
1181 | while (get_pages(sbi, F2FS_DIRTY_META)) { | |
1182 | sync_meta_pages(sbi, META, LONG_MAX); | |
1183 | if (unlikely(f2fs_cp_error(sbi))) | |
1184 | return -EIO; | |
1185 | } | |
1186 | } | |
1187 | ||
a7230d16 JK |
1188 | /* need to wait for end_io results */ |
1189 | wait_on_all_pages_writeback(sbi); | |
1190 | if (unlikely(f2fs_cp_error(sbi))) | |
c34f42e2 | 1191 | return -EIO; |
a7230d16 | 1192 | |
127e670a | 1193 | /* write out checkpoint buffer at block 0 */ |
381722d2 CY |
1194 | update_meta_page(sbi, ckpt, start_blk++); |
1195 | ||
1196 | for (i = 1; i < 1 + cp_payload_blks; i++) | |
1197 | update_meta_page(sbi, (char *)ckpt + i * F2FS_BLKSIZE, | |
1198 | start_blk++); | |
1dbe4152 | 1199 | |
67298804 | 1200 | if (orphan_num) { |
127e670a JK |
1201 | write_orphan_inodes(sbi, start_blk); |
1202 | start_blk += orphan_blocks; | |
1203 | } | |
1204 | ||
1205 | write_data_summaries(sbi, start_blk); | |
1206 | start_blk += data_sum_blocks; | |
8f1dbbbb SL |
1207 | |
1208 | /* Record write statistics in the hot node summary */ | |
1209 | kbytes_written = sbi->kbytes_written; | |
1210 | if (sb->s_bdev->bd_part) | |
1211 | kbytes_written += BD_PART_WRITTEN(sbi); | |
1212 | ||
b7ad7512 | 1213 | seg_i->journal->info.kbytes_written = cpu_to_le64(kbytes_written); |
8f1dbbbb | 1214 | |
119ee914 | 1215 | if (__remain_node_summaries(cpc->reason)) { |
127e670a JK |
1216 | write_node_summaries(sbi, start_blk); |
1217 | start_blk += NR_CURSEG_NODE_TYPE; | |
1218 | } | |
1219 | ||
1220 | /* writeout checkpoint block */ | |
381722d2 | 1221 | update_meta_page(sbi, ckpt, start_blk); |
127e670a JK |
1222 | |
1223 | /* wait for previous submitted node/meta pages writeback */ | |
fb51b5ef | 1224 | wait_on_all_pages_writeback(sbi); |
127e670a | 1225 | |
cf779cab | 1226 | if (unlikely(f2fs_cp_error(sbi))) |
c34f42e2 | 1227 | return -EIO; |
cf779cab | 1228 | |
80dd9c0e CY |
1229 | filemap_fdatawait_range(NODE_MAPPING(sbi), 0, LLONG_MAX); |
1230 | filemap_fdatawait_range(META_MAPPING(sbi), 0, LLONG_MAX); | |
127e670a JK |
1231 | |
1232 | /* update user_block_counts */ | |
1233 | sbi->last_valid_block_count = sbi->total_valid_block_count; | |
41382ec4 | 1234 | percpu_counter_set(&sbi->alloc_valid_block_count, 0); |
127e670a JK |
1235 | |
1236 | /* Here, we only have one bio having CP pack */ | |
577e3495 | 1237 | sync_meta_pages(sbi, META_FLUSH, LONG_MAX); |
127e670a | 1238 | |
6a8f8ca5 JK |
1239 | /* wait for previous submitted meta pages writeback */ |
1240 | wait_on_all_pages_writeback(sbi); | |
1241 | ||
74ef9241 | 1242 | release_ino_entry(sbi, false); |
cf779cab JK |
1243 | |
1244 | if (unlikely(f2fs_cp_error(sbi))) | |
c34f42e2 | 1245 | return -EIO; |
cf779cab | 1246 | |
caf0047e | 1247 | clear_sbi_flag(sbi, SBI_IS_DIRTY); |
bbf156f7 | 1248 | clear_sbi_flag(sbi, SBI_NEED_CP); |
8508e44a | 1249 | __set_cp_next_pack(sbi); |
c34f42e2 | 1250 | |
c2a080ae CY |
1251 | /* |
1252 | * redirty superblock if metadata like node page or inode cache is | |
1253 | * updated during writing checkpoint. | |
1254 | */ | |
1255 | if (get_pages(sbi, F2FS_DIRTY_NODES) || | |
1256 | get_pages(sbi, F2FS_DIRTY_IMETA)) | |
1257 | set_sbi_flag(sbi, SBI_IS_DIRTY); | |
1258 | ||
1259 | f2fs_bug_on(sbi, get_pages(sbi, F2FS_DIRTY_DENTS)); | |
1260 | ||
c34f42e2 | 1261 | return 0; |
127e670a JK |
1262 | } |
1263 | ||
0a8165d7 | 1264 | /* |
e1c42045 | 1265 | * We guarantee that this checkpoint procedure will not fail. |
127e670a | 1266 | */ |
c34f42e2 | 1267 | int write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
127e670a JK |
1268 | { |
1269 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1270 | unsigned long long ckpt_ver; | |
c34f42e2 | 1271 | int err = 0; |
127e670a | 1272 | |
43727527 | 1273 | mutex_lock(&sbi->cp_mutex); |
8501017e | 1274 | |
caf0047e | 1275 | if (!is_sbi_flag_set(sbi, SBI_IS_DIRTY) && |
c473f1a9 CY |
1276 | ((cpc->reason & CP_FASTBOOT) || (cpc->reason & CP_SYNC) || |
1277 | ((cpc->reason & CP_DISCARD) && !sbi->discard_blks))) | |
8501017e | 1278 | goto out; |
c34f42e2 CY |
1279 | if (unlikely(f2fs_cp_error(sbi))) { |
1280 | err = -EIO; | |
cf779cab | 1281 | goto out; |
c34f42e2 CY |
1282 | } |
1283 | if (f2fs_readonly(sbi->sb)) { | |
1284 | err = -EROFS; | |
11504a8e | 1285 | goto out; |
c34f42e2 | 1286 | } |
2bda542d WL |
1287 | |
1288 | trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "start block_ops"); | |
1289 | ||
c34f42e2 CY |
1290 | err = block_operations(sbi); |
1291 | if (err) | |
cf779cab | 1292 | goto out; |
127e670a | 1293 | |
75ab4cb8 | 1294 | trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish block_ops"); |
2af4bd6c | 1295 | |
406657dd | 1296 | f2fs_flush_merged_bios(sbi); |
127e670a | 1297 | |
58cce381 | 1298 | /* this is the case of multiple fstrims without any changes */ |
c473f1a9 | 1299 | if (cpc->reason & CP_DISCARD) { |
25290fa5 JK |
1300 | if (!exist_trim_candidates(sbi, cpc)) { |
1301 | unblock_operations(sbi); | |
1302 | goto out; | |
1303 | } | |
1304 | ||
0333ad4e JK |
1305 | if (NM_I(sbi)->dirty_nat_cnt == 0 && |
1306 | SIT_I(sbi)->dirty_sentries == 0 && | |
1307 | prefree_segments(sbi) == 0) { | |
1308 | flush_sit_entries(sbi, cpc); | |
1309 | clear_prefree_segments(sbi, cpc); | |
1310 | unblock_operations(sbi); | |
1311 | goto out; | |
1312 | } | |
58cce381 YH |
1313 | } |
1314 | ||
127e670a JK |
1315 | /* |
1316 | * update checkpoint pack index | |
1317 | * Increase the version number so that | |
1318 | * SIT entries and seg summaries are written at correct place | |
1319 | */ | |
d71b5564 | 1320 | ckpt_ver = cur_cp_version(ckpt); |
127e670a JK |
1321 | ckpt->checkpoint_ver = cpu_to_le64(++ckpt_ver); |
1322 | ||
1323 | /* write cached NAT/SIT entries to NAT/SIT area */ | |
22ad0b6a | 1324 | flush_nat_entries(sbi, cpc); |
4b2fecc8 | 1325 | flush_sit_entries(sbi, cpc); |
127e670a | 1326 | |
127e670a | 1327 | /* unlock all the fs_lock[] in do_checkpoint() */ |
c34f42e2 | 1328 | err = do_checkpoint(sbi, cpc); |
4e6a8d9b | 1329 | if (err) |
2dd15654 | 1330 | release_discard_addrs(sbi); |
4e6a8d9b | 1331 | else |
2dd15654 | 1332 | clear_prefree_segments(sbi, cpc); |
275b66b0 | 1333 | |
127e670a | 1334 | unblock_operations(sbi); |
942e0be6 | 1335 | stat_inc_cp_count(sbi->stat_info); |
10027551 | 1336 | |
c473f1a9 | 1337 | if (cpc->reason & CP_RECOVERY) |
10027551 JK |
1338 | f2fs_msg(sbi->sb, KERN_NOTICE, |
1339 | "checkpoint: version = %llx", ckpt_ver); | |
60b99b48 JK |
1340 | |
1341 | /* do checkpoint periodically */ | |
6beceb54 | 1342 | f2fs_update_time(sbi, CP_TIME); |
55d1cdb2 | 1343 | trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish checkpoint"); |
8501017e JK |
1344 | out: |
1345 | mutex_unlock(&sbi->cp_mutex); | |
c34f42e2 | 1346 | return err; |
127e670a JK |
1347 | } |
1348 | ||
6451e041 | 1349 | void init_ino_entry_info(struct f2fs_sb_info *sbi) |
127e670a | 1350 | { |
6451e041 JK |
1351 | int i; |
1352 | ||
1353 | for (i = 0; i < MAX_INO_ENTRY; i++) { | |
67298804 CY |
1354 | struct inode_management *im = &sbi->im[i]; |
1355 | ||
1356 | INIT_RADIX_TREE(&im->ino_root, GFP_ATOMIC); | |
1357 | spin_lock_init(&im->ino_lock); | |
1358 | INIT_LIST_HEAD(&im->ino_list); | |
1359 | im->ino_num = 0; | |
6451e041 JK |
1360 | } |
1361 | ||
b5b82205 | 1362 | sbi->max_orphans = (sbi->blocks_per_seg - F2FS_CP_PACKS - |
14b42817 WL |
1363 | NR_CURSEG_TYPE - __cp_payload(sbi)) * |
1364 | F2FS_ORPHANS_PER_BLOCK; | |
127e670a JK |
1365 | } |
1366 | ||
6e6093a8 | 1367 | int __init create_checkpoint_caches(void) |
127e670a | 1368 | { |
6451e041 JK |
1369 | ino_entry_slab = f2fs_kmem_cache_create("f2fs_ino_entry", |
1370 | sizeof(struct ino_entry)); | |
1371 | if (!ino_entry_slab) | |
127e670a | 1372 | return -ENOMEM; |
06292073 CY |
1373 | inode_entry_slab = f2fs_kmem_cache_create("f2fs_inode_entry", |
1374 | sizeof(struct inode_entry)); | |
6bacf52f | 1375 | if (!inode_entry_slab) { |
6451e041 | 1376 | kmem_cache_destroy(ino_entry_slab); |
127e670a JK |
1377 | return -ENOMEM; |
1378 | } | |
1379 | return 0; | |
1380 | } | |
1381 | ||
1382 | void destroy_checkpoint_caches(void) | |
1383 | { | |
6451e041 | 1384 | kmem_cache_destroy(ino_entry_slab); |
127e670a JK |
1385 | kmem_cache_destroy(inode_entry_slab); |
1386 | } |