Commit | Line | Data |
---|---|---|
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 | { | |
31 | set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG); | |
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 MC |
67 | .op = REQ_OP_READ, |
68 | .op_flags = READ_SYNC | 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, |
70246286 | 163 | .op_flags = sync ? (READ_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; |
7a9d7548 | 210 | fio.old_blkaddr = fio.new_blkaddr; |
05ca3632 | 211 | f2fs_submit_page_mbio(&fio); |
662befda CY |
212 | f2fs_put_page(page, 0); |
213 | } | |
214 | out: | |
215 | f2fs_submit_merged_bio(sbi, META, READ); | |
e9f5b8b8 | 216 | blk_finish_plug(&plug); |
662befda CY |
217 | return blkno - start; |
218 | } | |
219 | ||
635aee1f CY |
220 | void ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index) |
221 | { | |
222 | struct page *page; | |
223 | bool readahead = false; | |
224 | ||
225 | page = find_get_page(META_MAPPING(sbi), index); | |
4da7bf5a | 226 | if (!page || !PageUptodate(page)) |
635aee1f CY |
227 | readahead = true; |
228 | f2fs_put_page(page, 0); | |
229 | ||
230 | if (readahead) | |
26879fb1 | 231 | ra_meta_pages(sbi, index, MAX_BIO_BLOCKS(sbi), META_POR, true); |
635aee1f CY |
232 | } |
233 | ||
127e670a JK |
234 | static int f2fs_write_meta_page(struct page *page, |
235 | struct writeback_control *wbc) | |
236 | { | |
4081363f | 237 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); |
127e670a | 238 | |
ecda0de3 CY |
239 | trace_f2fs_writepage(page, META); |
240 | ||
caf0047e | 241 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
cfb271d4 | 242 | goto redirty_out; |
857dc4e0 | 243 | if (wbc->for_reclaim && page->index < GET_SUM_BLOCK(sbi, 0)) |
cfb271d4 | 244 | goto redirty_out; |
1e968fdf | 245 | if (unlikely(f2fs_cp_error(sbi))) |
cf779cab | 246 | goto redirty_out; |
127e670a | 247 | |
577e3495 JK |
248 | write_meta_page(sbi, page); |
249 | dec_page_count(sbi, F2FS_DIRTY_META); | |
0c3a5797 CY |
250 | |
251 | if (wbc->for_reclaim) | |
252 | f2fs_submit_merged_bio_cond(sbi, NULL, page, 0, META, WRITE); | |
253 | ||
577e3495 | 254 | unlock_page(page); |
857dc4e0 | 255 | |
0c3a5797 | 256 | if (unlikely(f2fs_cp_error(sbi))) |
857dc4e0 | 257 | f2fs_submit_merged_bio(sbi, META, WRITE); |
0c3a5797 | 258 | |
577e3495 | 259 | return 0; |
cfb271d4 CY |
260 | |
261 | redirty_out: | |
76f60268 | 262 | redirty_page_for_writepage(wbc, page); |
cfb271d4 | 263 | return AOP_WRITEPAGE_ACTIVATE; |
127e670a JK |
264 | } |
265 | ||
266 | static int f2fs_write_meta_pages(struct address_space *mapping, | |
267 | struct writeback_control *wbc) | |
268 | { | |
4081363f | 269 | struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); |
9dfa1baf | 270 | struct blk_plug plug; |
50c8cdb3 | 271 | long diff, written; |
127e670a | 272 | |
5459aa97 | 273 | /* collect a number of dirty meta pages and write together */ |
50c8cdb3 JK |
274 | if (wbc->for_kupdate || |
275 | get_pages(sbi, F2FS_DIRTY_META) < nr_pages_to_skip(sbi, META)) | |
d3baf95d | 276 | goto skip_write; |
127e670a | 277 | |
d31c7c3f YH |
278 | trace_f2fs_writepages(mapping->host, wbc, META); |
279 | ||
127e670a JK |
280 | /* if mounting is failed, skip writing node pages */ |
281 | mutex_lock(&sbi->cp_mutex); | |
50c8cdb3 | 282 | diff = nr_pages_to_write(sbi, META, wbc); |
9dfa1baf | 283 | blk_start_plug(&plug); |
50c8cdb3 | 284 | written = sync_meta_pages(sbi, META, wbc->nr_to_write); |
9dfa1baf | 285 | blk_finish_plug(&plug); |
127e670a | 286 | mutex_unlock(&sbi->cp_mutex); |
50c8cdb3 | 287 | wbc->nr_to_write = max((long)0, wbc->nr_to_write - written - diff); |
127e670a | 288 | return 0; |
d3baf95d JK |
289 | |
290 | skip_write: | |
291 | wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_META); | |
d31c7c3f | 292 | trace_f2fs_writepages(mapping->host, wbc, META); |
d3baf95d | 293 | return 0; |
127e670a JK |
294 | } |
295 | ||
296 | long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type, | |
297 | long nr_to_write) | |
298 | { | |
9df27d98 | 299 | struct address_space *mapping = META_MAPPING(sbi); |
80dd9c0e | 300 | pgoff_t index = 0, end = ULONG_MAX, prev = ULONG_MAX; |
127e670a JK |
301 | struct pagevec pvec; |
302 | long nwritten = 0; | |
303 | struct writeback_control wbc = { | |
304 | .for_reclaim = 0, | |
305 | }; | |
e9f5b8b8 | 306 | struct blk_plug plug; |
127e670a JK |
307 | |
308 | pagevec_init(&pvec, 0); | |
309 | ||
e9f5b8b8 CY |
310 | blk_start_plug(&plug); |
311 | ||
127e670a JK |
312 | while (index <= end) { |
313 | int i, nr_pages; | |
314 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &index, | |
315 | PAGECACHE_TAG_DIRTY, | |
316 | min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); | |
cfb271d4 | 317 | if (unlikely(nr_pages == 0)) |
127e670a JK |
318 | break; |
319 | ||
320 | for (i = 0; i < nr_pages; i++) { | |
321 | struct page *page = pvec.pages[i]; | |
203681f6 | 322 | |
80dd9c0e | 323 | if (prev == ULONG_MAX) |
6066d8cd JK |
324 | prev = page->index - 1; |
325 | if (nr_to_write != LONG_MAX && page->index != prev + 1) { | |
326 | pagevec_release(&pvec); | |
327 | goto stop; | |
328 | } | |
329 | ||
127e670a | 330 | lock_page(page); |
203681f6 JK |
331 | |
332 | if (unlikely(page->mapping != mapping)) { | |
333 | continue_unlock: | |
334 | unlock_page(page); | |
335 | continue; | |
336 | } | |
337 | if (!PageDirty(page)) { | |
338 | /* someone wrote it for us */ | |
339 | goto continue_unlock; | |
340 | } | |
341 | ||
fa3d2bdf JK |
342 | f2fs_wait_on_page_writeback(page, META, true); |
343 | ||
344 | BUG_ON(PageWriteback(page)); | |
203681f6 JK |
345 | if (!clear_page_dirty_for_io(page)) |
346 | goto continue_unlock; | |
347 | ||
97dc3fd2 | 348 | if (mapping->a_ops->writepage(page, &wbc)) { |
577e3495 JK |
349 | unlock_page(page); |
350 | break; | |
351 | } | |
cfb271d4 | 352 | nwritten++; |
6066d8cd | 353 | prev = page->index; |
cfb271d4 | 354 | if (unlikely(nwritten >= nr_to_write)) |
127e670a JK |
355 | break; |
356 | } | |
357 | pagevec_release(&pvec); | |
358 | cond_resched(); | |
359 | } | |
6066d8cd | 360 | stop: |
127e670a | 361 | if (nwritten) |
458e6197 | 362 | f2fs_submit_merged_bio(sbi, type, WRITE); |
127e670a | 363 | |
e9f5b8b8 CY |
364 | blk_finish_plug(&plug); |
365 | ||
127e670a JK |
366 | return nwritten; |
367 | } | |
368 | ||
369 | static int f2fs_set_meta_page_dirty(struct page *page) | |
370 | { | |
26c6b887 JK |
371 | trace_f2fs_set_page_dirty(page, META); |
372 | ||
237c0790 JK |
373 | if (!PageUptodate(page)) |
374 | SetPageUptodate(page); | |
127e670a | 375 | if (!PageDirty(page)) { |
fe76b796 | 376 | f2fs_set_page_dirty_nobuffers(page); |
4081363f | 377 | inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_META); |
1601839e | 378 | SetPagePrivate(page); |
9e4ded3f | 379 | f2fs_trace_pid(page); |
127e670a JK |
380 | return 1; |
381 | } | |
382 | return 0; | |
383 | } | |
384 | ||
385 | const struct address_space_operations f2fs_meta_aops = { | |
386 | .writepage = f2fs_write_meta_page, | |
387 | .writepages = f2fs_write_meta_pages, | |
388 | .set_page_dirty = f2fs_set_meta_page_dirty, | |
487261f3 CY |
389 | .invalidatepage = f2fs_invalidate_page, |
390 | .releasepage = f2fs_release_page, | |
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 | |
494 | if (time_to_inject(FAULT_ORPHAN)) { | |
495 | spin_unlock(&im->ino_lock); | |
496 | return -ENOSPC; | |
497 | } | |
498 | #endif | |
67298804 | 499 | if (unlikely(im->ino_num >= sbi->max_orphans)) |
127e670a | 500 | err = -ENOSPC; |
cbd56e7d | 501 | else |
67298804 CY |
502 | im->ino_num++; |
503 | spin_unlock(&im->ino_lock); | |
0d47c1ad | 504 | |
127e670a JK |
505 | return err; |
506 | } | |
507 | ||
cbd56e7d JK |
508 | void release_orphan_inode(struct f2fs_sb_info *sbi) |
509 | { | |
67298804 CY |
510 | struct inode_management *im = &sbi->im[ORPHAN_INO]; |
511 | ||
512 | spin_lock(&im->ino_lock); | |
513 | f2fs_bug_on(sbi, im->ino_num == 0); | |
514 | im->ino_num--; | |
515 | spin_unlock(&im->ino_lock); | |
cbd56e7d JK |
516 | } |
517 | ||
67c3758d | 518 | void add_orphan_inode(struct inode *inode) |
127e670a | 519 | { |
39efac41 | 520 | /* add new orphan ino entry into list */ |
67c3758d JK |
521 | __add_ino_entry(F2FS_I_SB(inode), inode->i_ino, ORPHAN_INO); |
522 | update_inode_page(inode); | |
127e670a JK |
523 | } |
524 | ||
525 | void remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) | |
526 | { | |
953e6cc6 | 527 | /* remove orphan entry from orphan list */ |
6451e041 | 528 | __remove_ino_entry(sbi, ino, ORPHAN_INO); |
127e670a JK |
529 | } |
530 | ||
8c14bfad | 531 | static int recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) |
127e670a | 532 | { |
8c14bfad CY |
533 | struct inode *inode; |
534 | ||
535 | inode = f2fs_iget(sbi->sb, ino); | |
536 | if (IS_ERR(inode)) { | |
537 | /* | |
538 | * there should be a bug that we can't find the entry | |
539 | * to orphan inode. | |
540 | */ | |
541 | f2fs_bug_on(sbi, PTR_ERR(inode) == -ENOENT); | |
542 | return PTR_ERR(inode); | |
543 | } | |
544 | ||
127e670a JK |
545 | clear_nlink(inode); |
546 | ||
547 | /* truncate all the data during iput */ | |
548 | iput(inode); | |
8c14bfad | 549 | return 0; |
127e670a JK |
550 | } |
551 | ||
8c14bfad | 552 | int recover_orphan_inodes(struct f2fs_sb_info *sbi) |
127e670a | 553 | { |
3c642985 | 554 | block_t start_blk, orphan_blocks, i, j; |
8c14bfad | 555 | int err; |
127e670a | 556 | |
25ca923b | 557 | if (!is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG)) |
8c14bfad | 558 | return 0; |
127e670a | 559 | |
55141486 | 560 | start_blk = __start_cp_addr(sbi) + 1 + __cp_payload(sbi); |
3c642985 | 561 | orphan_blocks = __start_sum_addr(sbi) - 1 - __cp_payload(sbi); |
127e670a | 562 | |
26879fb1 | 563 | ra_meta_pages(sbi, start_blk, orphan_blocks, META_CP, true); |
662befda | 564 | |
3c642985 | 565 | for (i = 0; i < orphan_blocks; i++) { |
127e670a JK |
566 | struct page *page = get_meta_page(sbi, start_blk + i); |
567 | struct f2fs_orphan_block *orphan_blk; | |
568 | ||
569 | orphan_blk = (struct f2fs_orphan_block *)page_address(page); | |
570 | for (j = 0; j < le32_to_cpu(orphan_blk->entry_count); j++) { | |
571 | nid_t ino = le32_to_cpu(orphan_blk->ino[j]); | |
8c14bfad CY |
572 | err = recover_orphan_inode(sbi, ino); |
573 | if (err) { | |
574 | f2fs_put_page(page, 1); | |
8c14bfad CY |
575 | return err; |
576 | } | |
127e670a JK |
577 | } |
578 | f2fs_put_page(page, 1); | |
579 | } | |
580 | /* clear Orphan Flag */ | |
25ca923b | 581 | clear_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG); |
8c14bfad | 582 | return 0; |
127e670a JK |
583 | } |
584 | ||
585 | static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk) | |
586 | { | |
502c6e0b | 587 | struct list_head *head; |
127e670a | 588 | struct f2fs_orphan_block *orphan_blk = NULL; |
127e670a | 589 | unsigned int nentries = 0; |
bd936f84 | 590 | unsigned short index = 1; |
8c402946 | 591 | unsigned short orphan_blocks; |
4531929e | 592 | struct page *page = NULL; |
6451e041 | 593 | struct ino_entry *orphan = NULL; |
67298804 | 594 | struct inode_management *im = &sbi->im[ORPHAN_INO]; |
127e670a | 595 | |
67298804 | 596 | orphan_blocks = GET_ORPHAN_BLOCKS(im->ino_num); |
8c402946 | 597 | |
d6c67a4f JK |
598 | /* |
599 | * we don't need to do spin_lock(&im->ino_lock) here, since all the | |
600 | * orphan inode operations are covered under f2fs_lock_op(). | |
601 | * And, spin_lock should be avoided due to page operations below. | |
602 | */ | |
67298804 | 603 | head = &im->ino_list; |
127e670a JK |
604 | |
605 | /* loop for each orphan inode entry and write them in Jornal block */ | |
502c6e0b GZ |
606 | list_for_each_entry(orphan, head, list) { |
607 | if (!page) { | |
bd936f84 | 608 | page = grab_meta_page(sbi, start_blk++); |
502c6e0b GZ |
609 | orphan_blk = |
610 | (struct f2fs_orphan_block *)page_address(page); | |
611 | memset(orphan_blk, 0, sizeof(*orphan_blk)); | |
612 | } | |
127e670a | 613 | |
36795567 | 614 | orphan_blk->ino[nentries++] = cpu_to_le32(orphan->ino); |
127e670a | 615 | |
36795567 | 616 | if (nentries == F2FS_ORPHANS_PER_BLOCK) { |
127e670a JK |
617 | /* |
618 | * an orphan block is full of 1020 entries, | |
619 | * then we need to flush current orphan blocks | |
620 | * and bring another one in memory | |
621 | */ | |
622 | orphan_blk->blk_addr = cpu_to_le16(index); | |
623 | orphan_blk->blk_count = cpu_to_le16(orphan_blocks); | |
624 | orphan_blk->entry_count = cpu_to_le32(nentries); | |
625 | set_page_dirty(page); | |
626 | f2fs_put_page(page, 1); | |
627 | index++; | |
127e670a JK |
628 | nentries = 0; |
629 | page = NULL; | |
630 | } | |
502c6e0b | 631 | } |
127e670a | 632 | |
502c6e0b GZ |
633 | if (page) { |
634 | orphan_blk->blk_addr = cpu_to_le16(index); | |
635 | orphan_blk->blk_count = cpu_to_le16(orphan_blocks); | |
636 | orphan_blk->entry_count = cpu_to_le32(nentries); | |
637 | set_page_dirty(page); | |
638 | f2fs_put_page(page, 1); | |
127e670a | 639 | } |
127e670a JK |
640 | } |
641 | ||
642 | static struct page *validate_checkpoint(struct f2fs_sb_info *sbi, | |
643 | block_t cp_addr, unsigned long long *version) | |
644 | { | |
645 | struct page *cp_page_1, *cp_page_2 = NULL; | |
646 | unsigned long blk_size = sbi->blocksize; | |
647 | struct f2fs_checkpoint *cp_block; | |
648 | unsigned long long cur_version = 0, pre_version = 0; | |
127e670a | 649 | size_t crc_offset; |
7e586fa0 | 650 | __u32 crc = 0; |
127e670a JK |
651 | |
652 | /* Read the 1st cp block in this CP pack */ | |
653 | cp_page_1 = get_meta_page(sbi, cp_addr); | |
654 | ||
655 | /* get the version number */ | |
656 | cp_block = (struct f2fs_checkpoint *)page_address(cp_page_1); | |
657 | crc_offset = le32_to_cpu(cp_block->checksum_offset); | |
658 | if (crc_offset >= blk_size) | |
659 | goto invalid_cp1; | |
660 | ||
29e7043f | 661 | crc = le32_to_cpu(*((__le32 *)((unsigned char *)cp_block + crc_offset))); |
43b6573b | 662 | if (!f2fs_crc_valid(sbi, crc, cp_block, crc_offset)) |
127e670a JK |
663 | goto invalid_cp1; |
664 | ||
d71b5564 | 665 | pre_version = cur_cp_version(cp_block); |
127e670a JK |
666 | |
667 | /* Read the 2nd cp block in this CP pack */ | |
25ca923b | 668 | cp_addr += le32_to_cpu(cp_block->cp_pack_total_block_count) - 1; |
127e670a JK |
669 | cp_page_2 = get_meta_page(sbi, cp_addr); |
670 | ||
671 | cp_block = (struct f2fs_checkpoint *)page_address(cp_page_2); | |
672 | crc_offset = le32_to_cpu(cp_block->checksum_offset); | |
673 | if (crc_offset >= blk_size) | |
674 | goto invalid_cp2; | |
675 | ||
29e7043f | 676 | crc = le32_to_cpu(*((__le32 *)((unsigned char *)cp_block + crc_offset))); |
43b6573b | 677 | if (!f2fs_crc_valid(sbi, crc, cp_block, crc_offset)) |
127e670a JK |
678 | goto invalid_cp2; |
679 | ||
d71b5564 | 680 | cur_version = cur_cp_version(cp_block); |
127e670a JK |
681 | |
682 | if (cur_version == pre_version) { | |
683 | *version = cur_version; | |
684 | f2fs_put_page(cp_page_2, 1); | |
685 | return cp_page_1; | |
686 | } | |
687 | invalid_cp2: | |
688 | f2fs_put_page(cp_page_2, 1); | |
689 | invalid_cp1: | |
690 | f2fs_put_page(cp_page_1, 1); | |
691 | return NULL; | |
692 | } | |
693 | ||
694 | int get_valid_checkpoint(struct f2fs_sb_info *sbi) | |
695 | { | |
696 | struct f2fs_checkpoint *cp_block; | |
697 | struct f2fs_super_block *fsb = sbi->raw_super; | |
698 | struct page *cp1, *cp2, *cur_page; | |
699 | unsigned long blk_size = sbi->blocksize; | |
700 | unsigned long long cp1_version = 0, cp2_version = 0; | |
701 | unsigned long long cp_start_blk_no; | |
55141486 | 702 | unsigned int cp_blks = 1 + __cp_payload(sbi); |
1dbe4152 CL |
703 | block_t cp_blk_no; |
704 | int i; | |
127e670a | 705 | |
1dbe4152 | 706 | sbi->ckpt = kzalloc(cp_blks * blk_size, GFP_KERNEL); |
127e670a JK |
707 | if (!sbi->ckpt) |
708 | return -ENOMEM; | |
709 | /* | |
710 | * Finding out valid cp block involves read both | |
711 | * sets( cp pack1 and cp pack 2) | |
712 | */ | |
713 | cp_start_blk_no = le32_to_cpu(fsb->cp_blkaddr); | |
714 | cp1 = validate_checkpoint(sbi, cp_start_blk_no, &cp1_version); | |
715 | ||
716 | /* The second checkpoint pack should start at the next segment */ | |
f9a4e6df JK |
717 | cp_start_blk_no += ((unsigned long long)1) << |
718 | le32_to_cpu(fsb->log_blocks_per_seg); | |
127e670a JK |
719 | cp2 = validate_checkpoint(sbi, cp_start_blk_no, &cp2_version); |
720 | ||
721 | if (cp1 && cp2) { | |
722 | if (ver_after(cp2_version, cp1_version)) | |
723 | cur_page = cp2; | |
724 | else | |
725 | cur_page = cp1; | |
726 | } else if (cp1) { | |
727 | cur_page = cp1; | |
728 | } else if (cp2) { | |
729 | cur_page = cp2; | |
730 | } else { | |
731 | goto fail_no_cp; | |
732 | } | |
733 | ||
734 | cp_block = (struct f2fs_checkpoint *)page_address(cur_page); | |
735 | memcpy(sbi->ckpt, cp_block, blk_size); | |
736 | ||
984ec63c SL |
737 | /* Sanity checking of checkpoint */ |
738 | if (sanity_check_ckpt(sbi)) | |
739 | goto fail_no_cp; | |
740 | ||
1dbe4152 CL |
741 | if (cp_blks <= 1) |
742 | goto done; | |
743 | ||
744 | cp_blk_no = le32_to_cpu(fsb->cp_blkaddr); | |
745 | if (cur_page == cp2) | |
746 | cp_blk_no += 1 << le32_to_cpu(fsb->log_blocks_per_seg); | |
747 | ||
748 | for (i = 1; i < cp_blks; i++) { | |
749 | void *sit_bitmap_ptr; | |
750 | unsigned char *ckpt = (unsigned char *)sbi->ckpt; | |
751 | ||
752 | cur_page = get_meta_page(sbi, cp_blk_no + i); | |
753 | sit_bitmap_ptr = page_address(cur_page); | |
754 | memcpy(ckpt + i * blk_size, sit_bitmap_ptr, blk_size); | |
755 | f2fs_put_page(cur_page, 1); | |
756 | } | |
757 | done: | |
127e670a JK |
758 | f2fs_put_page(cp1, 1); |
759 | f2fs_put_page(cp2, 1); | |
760 | return 0; | |
761 | ||
762 | fail_no_cp: | |
763 | kfree(sbi->ckpt); | |
764 | return -EINVAL; | |
765 | } | |
766 | ||
c227f912 | 767 | static void __add_dirty_inode(struct inode *inode, enum inode_type type) |
127e670a | 768 | { |
4081363f | 769 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
c227f912 | 770 | int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE; |
127e670a | 771 | |
91942321 | 772 | if (is_inode_flag_set(inode, flag)) |
2710fd7e | 773 | return; |
2d7b822a | 774 | |
91942321 JK |
775 | set_inode_flag(inode, flag); |
776 | list_add_tail(&F2FS_I(inode)->dirty_list, &sbi->inode_list[type]); | |
33fbd510 | 777 | stat_inc_dirty_inode(sbi, type); |
5deb8267 JK |
778 | } |
779 | ||
c227f912 | 780 | static void __remove_dirty_inode(struct inode *inode, enum inode_type type) |
6ad7609a | 781 | { |
c227f912 | 782 | int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE; |
6ad7609a | 783 | |
91942321 | 784 | if (get_dirty_pages(inode) || !is_inode_flag_set(inode, flag)) |
6ad7609a CY |
785 | return; |
786 | ||
91942321 JK |
787 | list_del_init(&F2FS_I(inode)->dirty_list); |
788 | clear_inode_flag(inode, flag); | |
33fbd510 | 789 | stat_dec_dirty_inode(F2FS_I_SB(inode), type); |
6ad7609a CY |
790 | } |
791 | ||
a7ffdbe2 | 792 | void update_dirty_page(struct inode *inode, struct page *page) |
5deb8267 | 793 | { |
4081363f | 794 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
c227f912 | 795 | enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE; |
5deb8267 | 796 | |
5ac9f36f CY |
797 | if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) && |
798 | !S_ISLNK(inode->i_mode)) | |
127e670a | 799 | return; |
7bd59381 | 800 | |
1c4bf763 JK |
801 | spin_lock(&sbi->inode_lock[type]); |
802 | if (type != FILE_INODE || test_opt(sbi, DATA_FLUSH)) | |
10aa97c3 | 803 | __add_dirty_inode(inode, type); |
b951a4ec | 804 | inode_inc_dirty_pages(inode); |
1c4bf763 JK |
805 | spin_unlock(&sbi->inode_lock[type]); |
806 | ||
a7ffdbe2 | 807 | SetPagePrivate(page); |
9e4ded3f | 808 | f2fs_trace_pid(page); |
5deb8267 JK |
809 | } |
810 | ||
c227f912 | 811 | void remove_dirty_inode(struct inode *inode) |
127e670a | 812 | { |
4081363f | 813 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
c227f912 | 814 | enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE; |
127e670a | 815 | |
c227f912 CY |
816 | if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) && |
817 | !S_ISLNK(inode->i_mode)) | |
127e670a JK |
818 | return; |
819 | ||
10aa97c3 JK |
820 | if (type == FILE_INODE && !test_opt(sbi, DATA_FLUSH)) |
821 | return; | |
822 | ||
c227f912 CY |
823 | spin_lock(&sbi->inode_lock[type]); |
824 | __remove_dirty_inode(inode, type); | |
825 | spin_unlock(&sbi->inode_lock[type]); | |
74d0b917 JK |
826 | } |
827 | ||
6d5a1495 | 828 | int sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type) |
127e670a | 829 | { |
ce3b7d80 | 830 | struct list_head *head; |
127e670a | 831 | struct inode *inode; |
2710fd7e | 832 | struct f2fs_inode_info *fi; |
4cf18537 CY |
833 | bool is_dir = (type == DIR_INODE); |
834 | ||
835 | trace_f2fs_sync_dirty_inodes_enter(sbi->sb, is_dir, | |
836 | get_pages(sbi, is_dir ? | |
837 | F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA)); | |
127e670a | 838 | retry: |
af41d3ee | 839 | if (unlikely(f2fs_cp_error(sbi))) |
6d5a1495 | 840 | return -EIO; |
af41d3ee | 841 | |
c227f912 | 842 | spin_lock(&sbi->inode_lock[type]); |
ce3b7d80 | 843 | |
c227f912 | 844 | head = &sbi->inode_list[type]; |
127e670a | 845 | if (list_empty(head)) { |
c227f912 | 846 | spin_unlock(&sbi->inode_lock[type]); |
4cf18537 CY |
847 | trace_f2fs_sync_dirty_inodes_exit(sbi->sb, is_dir, |
848 | get_pages(sbi, is_dir ? | |
849 | F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA)); | |
6d5a1495 | 850 | return 0; |
127e670a | 851 | } |
2710fd7e CY |
852 | fi = list_entry(head->next, struct f2fs_inode_info, dirty_list); |
853 | inode = igrab(&fi->vfs_inode); | |
c227f912 | 854 | spin_unlock(&sbi->inode_lock[type]); |
127e670a | 855 | if (inode) { |
87d6f890 | 856 | filemap_fdatawrite(inode->i_mapping); |
127e670a JK |
857 | iput(inode); |
858 | } else { | |
859 | /* | |
860 | * We should submit bio, since it exists several | |
861 | * wribacking dentry pages in the freeing inode. | |
862 | */ | |
458e6197 | 863 | f2fs_submit_merged_bio(sbi, DATA, WRITE); |
7ecebe5e | 864 | cond_resched(); |
127e670a JK |
865 | } |
866 | goto retry; | |
867 | } | |
868 | ||
0f18b462 JK |
869 | int f2fs_sync_inode_meta(struct f2fs_sb_info *sbi) |
870 | { | |
871 | struct list_head *head = &sbi->inode_list[DIRTY_META]; | |
872 | struct inode *inode; | |
873 | struct f2fs_inode_info *fi; | |
874 | s64 total = get_pages(sbi, F2FS_DIRTY_IMETA); | |
875 | ||
876 | while (total--) { | |
877 | if (unlikely(f2fs_cp_error(sbi))) | |
878 | return -EIO; | |
879 | ||
880 | spin_lock(&sbi->inode_lock[DIRTY_META]); | |
881 | if (list_empty(head)) { | |
882 | spin_unlock(&sbi->inode_lock[DIRTY_META]); | |
883 | return 0; | |
884 | } | |
885 | fi = list_entry(head->next, struct f2fs_inode_info, | |
886 | gdirty_list); | |
887 | inode = igrab(&fi->vfs_inode); | |
888 | spin_unlock(&sbi->inode_lock[DIRTY_META]); | |
889 | if (inode) { | |
890 | update_inode_page(inode); | |
891 | iput(inode); | |
892 | } | |
893 | }; | |
894 | return 0; | |
895 | } | |
896 | ||
0a8165d7 | 897 | /* |
127e670a JK |
898 | * Freeze all the FS-operations for checkpoint. |
899 | */ | |
cf779cab | 900 | static int block_operations(struct f2fs_sb_info *sbi) |
127e670a | 901 | { |
127e670a JK |
902 | struct writeback_control wbc = { |
903 | .sync_mode = WB_SYNC_ALL, | |
904 | .nr_to_write = LONG_MAX, | |
905 | .for_reclaim = 0, | |
906 | }; | |
c718379b | 907 | struct blk_plug plug; |
cf779cab | 908 | int err = 0; |
c718379b JK |
909 | |
910 | blk_start_plug(&plug); | |
911 | ||
39936837 | 912 | retry_flush_dents: |
e479556b | 913 | f2fs_lock_all(sbi); |
127e670a | 914 | /* write all the dirty dentry pages */ |
127e670a | 915 | if (get_pages(sbi, F2FS_DIRTY_DENTS)) { |
e479556b | 916 | f2fs_unlock_all(sbi); |
6d5a1495 CY |
917 | err = sync_dirty_inodes(sbi, DIR_INODE); |
918 | if (err) | |
cf779cab | 919 | goto out; |
39936837 | 920 | goto retry_flush_dents; |
127e670a JK |
921 | } |
922 | ||
0f18b462 JK |
923 | if (get_pages(sbi, F2FS_DIRTY_IMETA)) { |
924 | f2fs_unlock_all(sbi); | |
925 | err = f2fs_sync_inode_meta(sbi); | |
926 | if (err) | |
927 | goto out; | |
928 | goto retry_flush_dents; | |
929 | } | |
930 | ||
127e670a | 931 | /* |
e1c42045 | 932 | * POR: we should ensure that there are no dirty node pages |
127e670a JK |
933 | * until finishing nat/sit flush. |
934 | */ | |
39936837 | 935 | retry_flush_nodes: |
b3582c68 | 936 | down_write(&sbi->node_write); |
127e670a JK |
937 | |
938 | if (get_pages(sbi, F2FS_DIRTY_NODES)) { | |
b3582c68 | 939 | up_write(&sbi->node_write); |
52681375 | 940 | err = sync_node_pages(sbi, &wbc); |
6d5a1495 | 941 | if (err) { |
cf779cab | 942 | f2fs_unlock_all(sbi); |
cf779cab JK |
943 | goto out; |
944 | } | |
39936837 | 945 | goto retry_flush_nodes; |
127e670a | 946 | } |
cf779cab | 947 | out: |
c718379b | 948 | blk_finish_plug(&plug); |
cf779cab | 949 | return err; |
127e670a JK |
950 | } |
951 | ||
952 | static void unblock_operations(struct f2fs_sb_info *sbi) | |
953 | { | |
b3582c68 | 954 | up_write(&sbi->node_write); |
ad4edb83 JK |
955 | |
956 | build_free_nids(sbi); | |
e479556b | 957 | f2fs_unlock_all(sbi); |
127e670a JK |
958 | } |
959 | ||
fb51b5ef CL |
960 | static void wait_on_all_pages_writeback(struct f2fs_sb_info *sbi) |
961 | { | |
962 | DEFINE_WAIT(wait); | |
963 | ||
964 | for (;;) { | |
965 | prepare_to_wait(&sbi->cp_wait, &wait, TASK_UNINTERRUPTIBLE); | |
966 | ||
f5730184 | 967 | if (!atomic_read(&sbi->nr_wb_bios)) |
fb51b5ef CL |
968 | break; |
969 | ||
0ff21646 | 970 | io_schedule_timeout(5*HZ); |
fb51b5ef CL |
971 | } |
972 | finish_wait(&sbi->cp_wait, &wait); | |
973 | } | |
974 | ||
c34f42e2 | 975 | static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
127e670a JK |
976 | { |
977 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
cf2271e7 | 978 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_WARM_NODE); |
77041823 | 979 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
67298804 | 980 | unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num; |
77041823 | 981 | nid_t last_nid = nm_i->next_scan_nid; |
127e670a | 982 | block_t start_blk; |
127e670a | 983 | unsigned int data_sum_blocks, orphan_blocks; |
7e586fa0 | 984 | __u32 crc32 = 0; |
127e670a | 985 | int i; |
55141486 | 986 | int cp_payload_blks = __cp_payload(sbi); |
e90c2d28 CY |
987 | block_t discard_blk = NEXT_FREE_BLKADDR(sbi, curseg); |
988 | bool invalidate = false; | |
8f1dbbbb SL |
989 | struct super_block *sb = sbi->sb; |
990 | struct curseg_info *seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE); | |
991 | u64 kbytes_written; | |
127e670a | 992 | |
1e87a78d JK |
993 | /* |
994 | * This avoids to conduct wrong roll-forward operations and uses | |
995 | * metapages, so should be called prior to sync_meta_pages below. | |
996 | */ | |
36abef4e | 997 | if (!test_opt(sbi, LFS) && discard_next_dnode(sbi, discard_blk)) |
e90c2d28 | 998 | invalidate = true; |
127e670a JK |
999 | |
1000 | /* Flush all the NAT/SIT pages */ | |
cf779cab | 1001 | while (get_pages(sbi, F2FS_DIRTY_META)) { |
127e670a | 1002 | sync_meta_pages(sbi, META, LONG_MAX); |
cf779cab | 1003 | if (unlikely(f2fs_cp_error(sbi))) |
c34f42e2 | 1004 | return -EIO; |
cf779cab | 1005 | } |
127e670a JK |
1006 | |
1007 | next_free_nid(sbi, &last_nid); | |
1008 | ||
1009 | /* | |
1010 | * modify checkpoint | |
1011 | * version number is already updated | |
1012 | */ | |
1013 | ckpt->elapsed_time = cpu_to_le64(get_mtime(sbi)); | |
1014 | ckpt->valid_block_count = cpu_to_le64(valid_user_blocks(sbi)); | |
1015 | ckpt->free_segment_count = cpu_to_le32(free_segments(sbi)); | |
b5b82205 | 1016 | for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { |
127e670a JK |
1017 | ckpt->cur_node_segno[i] = |
1018 | cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_NODE)); | |
1019 | ckpt->cur_node_blkoff[i] = | |
1020 | cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_NODE)); | |
1021 | ckpt->alloc_type[i + CURSEG_HOT_NODE] = | |
1022 | curseg_alloc_type(sbi, i + CURSEG_HOT_NODE); | |
1023 | } | |
b5b82205 | 1024 | for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) { |
127e670a JK |
1025 | ckpt->cur_data_segno[i] = |
1026 | cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_DATA)); | |
1027 | ckpt->cur_data_blkoff[i] = | |
1028 | cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_DATA)); | |
1029 | ckpt->alloc_type[i + CURSEG_HOT_DATA] = | |
1030 | curseg_alloc_type(sbi, i + CURSEG_HOT_DATA); | |
1031 | } | |
1032 | ||
1033 | ckpt->valid_node_count = cpu_to_le32(valid_node_count(sbi)); | |
1034 | ckpt->valid_inode_count = cpu_to_le32(valid_inode_count(sbi)); | |
1035 | ckpt->next_free_nid = cpu_to_le32(last_nid); | |
1036 | ||
1037 | /* 2 cp + n data seg summary + orphan inode blocks */ | |
3fa06d7b | 1038 | data_sum_blocks = npages_for_summary_flush(sbi, false); |
b5b82205 | 1039 | if (data_sum_blocks < NR_CURSEG_DATA_TYPE) |
25ca923b | 1040 | set_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); |
127e670a | 1041 | else |
25ca923b | 1042 | clear_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); |
127e670a | 1043 | |
67298804 | 1044 | orphan_blocks = GET_ORPHAN_BLOCKS(orphan_num); |
1dbe4152 CL |
1045 | ckpt->cp_pack_start_sum = cpu_to_le32(1 + cp_payload_blks + |
1046 | orphan_blocks); | |
127e670a | 1047 | |
119ee914 | 1048 | if (__remain_node_summaries(cpc->reason)) |
b5b82205 | 1049 | ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS+ |
1dbe4152 CL |
1050 | cp_payload_blks + data_sum_blocks + |
1051 | orphan_blocks + NR_CURSEG_NODE_TYPE); | |
119ee914 | 1052 | else |
b5b82205 | 1053 | ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS + |
1dbe4152 CL |
1054 | cp_payload_blks + data_sum_blocks + |
1055 | orphan_blocks); | |
119ee914 JK |
1056 | |
1057 | if (cpc->reason == CP_UMOUNT) | |
1058 | set_ckpt_flags(ckpt, CP_UMOUNT_FLAG); | |
1059 | else | |
1060 | clear_ckpt_flags(ckpt, CP_UMOUNT_FLAG); | |
1061 | ||
1062 | if (cpc->reason == CP_FASTBOOT) | |
1063 | set_ckpt_flags(ckpt, CP_FASTBOOT_FLAG); | |
1064 | else | |
1065 | clear_ckpt_flags(ckpt, CP_FASTBOOT_FLAG); | |
127e670a | 1066 | |
67298804 | 1067 | if (orphan_num) |
25ca923b | 1068 | set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); |
127e670a | 1069 | else |
25ca923b | 1070 | clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); |
127e670a | 1071 | |
caf0047e | 1072 | if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) |
2ae4c673 JK |
1073 | set_ckpt_flags(ckpt, CP_FSCK_FLAG); |
1074 | ||
127e670a JK |
1075 | /* update SIT/NAT bitmap */ |
1076 | get_sit_bitmap(sbi, __bitmap_ptr(sbi, SIT_BITMAP)); | |
1077 | get_nat_bitmap(sbi, __bitmap_ptr(sbi, NAT_BITMAP)); | |
1078 | ||
43b6573b | 1079 | crc32 = f2fs_crc32(sbi, ckpt, le32_to_cpu(ckpt->checksum_offset)); |
7e586fa0 JK |
1080 | *((__le32 *)((unsigned char *)ckpt + |
1081 | le32_to_cpu(ckpt->checksum_offset))) | |
127e670a JK |
1082 | = cpu_to_le32(crc32); |
1083 | ||
1084 | start_blk = __start_cp_addr(sbi); | |
1085 | ||
a7230d16 JK |
1086 | /* need to wait for end_io results */ |
1087 | wait_on_all_pages_writeback(sbi); | |
1088 | if (unlikely(f2fs_cp_error(sbi))) | |
c34f42e2 | 1089 | return -EIO; |
a7230d16 | 1090 | |
127e670a | 1091 | /* write out checkpoint buffer at block 0 */ |
381722d2 CY |
1092 | update_meta_page(sbi, ckpt, start_blk++); |
1093 | ||
1094 | for (i = 1; i < 1 + cp_payload_blks; i++) | |
1095 | update_meta_page(sbi, (char *)ckpt + i * F2FS_BLKSIZE, | |
1096 | start_blk++); | |
1dbe4152 | 1097 | |
67298804 | 1098 | if (orphan_num) { |
127e670a JK |
1099 | write_orphan_inodes(sbi, start_blk); |
1100 | start_blk += orphan_blocks; | |
1101 | } | |
1102 | ||
1103 | write_data_summaries(sbi, start_blk); | |
1104 | start_blk += data_sum_blocks; | |
8f1dbbbb SL |
1105 | |
1106 | /* Record write statistics in the hot node summary */ | |
1107 | kbytes_written = sbi->kbytes_written; | |
1108 | if (sb->s_bdev->bd_part) | |
1109 | kbytes_written += BD_PART_WRITTEN(sbi); | |
1110 | ||
b7ad7512 | 1111 | seg_i->journal->info.kbytes_written = cpu_to_le64(kbytes_written); |
8f1dbbbb | 1112 | |
119ee914 | 1113 | if (__remain_node_summaries(cpc->reason)) { |
127e670a JK |
1114 | write_node_summaries(sbi, start_blk); |
1115 | start_blk += NR_CURSEG_NODE_TYPE; | |
1116 | } | |
1117 | ||
1118 | /* writeout checkpoint block */ | |
381722d2 | 1119 | update_meta_page(sbi, ckpt, start_blk); |
127e670a JK |
1120 | |
1121 | /* wait for previous submitted node/meta pages writeback */ | |
fb51b5ef | 1122 | wait_on_all_pages_writeback(sbi); |
127e670a | 1123 | |
cf779cab | 1124 | if (unlikely(f2fs_cp_error(sbi))) |
c34f42e2 | 1125 | return -EIO; |
cf779cab | 1126 | |
80dd9c0e CY |
1127 | filemap_fdatawait_range(NODE_MAPPING(sbi), 0, LLONG_MAX); |
1128 | filemap_fdatawait_range(META_MAPPING(sbi), 0, LLONG_MAX); | |
127e670a JK |
1129 | |
1130 | /* update user_block_counts */ | |
1131 | sbi->last_valid_block_count = sbi->total_valid_block_count; | |
41382ec4 | 1132 | percpu_counter_set(&sbi->alloc_valid_block_count, 0); |
127e670a JK |
1133 | |
1134 | /* Here, we only have one bio having CP pack */ | |
577e3495 | 1135 | sync_meta_pages(sbi, META_FLUSH, LONG_MAX); |
127e670a | 1136 | |
6a8f8ca5 JK |
1137 | /* wait for previous submitted meta pages writeback */ |
1138 | wait_on_all_pages_writeback(sbi); | |
1139 | ||
e90c2d28 CY |
1140 | /* |
1141 | * invalidate meta page which is used temporarily for zeroing out | |
1142 | * block at the end of warm node chain. | |
1143 | */ | |
1144 | if (invalidate) | |
1145 | invalidate_mapping_pages(META_MAPPING(sbi), discard_blk, | |
1146 | discard_blk); | |
1147 | ||
74ef9241 | 1148 | release_ino_entry(sbi, false); |
cf779cab JK |
1149 | |
1150 | if (unlikely(f2fs_cp_error(sbi))) | |
c34f42e2 | 1151 | return -EIO; |
cf779cab | 1152 | |
836b5a63 | 1153 | clear_prefree_segments(sbi, cpc); |
caf0047e | 1154 | clear_sbi_flag(sbi, SBI_IS_DIRTY); |
bbf156f7 | 1155 | clear_sbi_flag(sbi, SBI_NEED_CP); |
c34f42e2 | 1156 | |
c2a080ae CY |
1157 | /* |
1158 | * redirty superblock if metadata like node page or inode cache is | |
1159 | * updated during writing checkpoint. | |
1160 | */ | |
1161 | if (get_pages(sbi, F2FS_DIRTY_NODES) || | |
1162 | get_pages(sbi, F2FS_DIRTY_IMETA)) | |
1163 | set_sbi_flag(sbi, SBI_IS_DIRTY); | |
1164 | ||
1165 | f2fs_bug_on(sbi, get_pages(sbi, F2FS_DIRTY_DENTS)); | |
1166 | ||
c34f42e2 | 1167 | return 0; |
127e670a JK |
1168 | } |
1169 | ||
0a8165d7 | 1170 | /* |
e1c42045 | 1171 | * We guarantee that this checkpoint procedure will not fail. |
127e670a | 1172 | */ |
c34f42e2 | 1173 | int write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
127e670a JK |
1174 | { |
1175 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1176 | unsigned long long ckpt_ver; | |
c34f42e2 | 1177 | int err = 0; |
127e670a | 1178 | |
43727527 | 1179 | mutex_lock(&sbi->cp_mutex); |
8501017e | 1180 | |
caf0047e | 1181 | if (!is_sbi_flag_set(sbi, SBI_IS_DIRTY) && |
a66cdd98 JK |
1182 | (cpc->reason == CP_FASTBOOT || cpc->reason == CP_SYNC || |
1183 | (cpc->reason == CP_DISCARD && !sbi->discard_blks))) | |
8501017e | 1184 | goto out; |
c34f42e2 CY |
1185 | if (unlikely(f2fs_cp_error(sbi))) { |
1186 | err = -EIO; | |
cf779cab | 1187 | goto out; |
c34f42e2 CY |
1188 | } |
1189 | if (f2fs_readonly(sbi->sb)) { | |
1190 | err = -EROFS; | |
11504a8e | 1191 | goto out; |
c34f42e2 | 1192 | } |
2bda542d WL |
1193 | |
1194 | trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "start block_ops"); | |
1195 | ||
c34f42e2 CY |
1196 | err = block_operations(sbi); |
1197 | if (err) | |
cf779cab | 1198 | goto out; |
127e670a | 1199 | |
75ab4cb8 | 1200 | trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish block_ops"); |
2af4bd6c | 1201 | |
406657dd | 1202 | f2fs_flush_merged_bios(sbi); |
127e670a | 1203 | |
58cce381 YH |
1204 | /* this is the case of multiple fstrims without any changes */ |
1205 | if (cpc->reason == CP_DISCARD && !is_sbi_flag_set(sbi, SBI_IS_DIRTY)) { | |
1206 | f2fs_bug_on(sbi, NM_I(sbi)->dirty_nat_cnt); | |
1207 | f2fs_bug_on(sbi, SIT_I(sbi)->dirty_sentries); | |
1208 | f2fs_bug_on(sbi, prefree_segments(sbi)); | |
1209 | flush_sit_entries(sbi, cpc); | |
1210 | clear_prefree_segments(sbi, cpc); | |
275b66b0 | 1211 | f2fs_wait_all_discard_bio(sbi); |
58cce381 YH |
1212 | unblock_operations(sbi); |
1213 | goto out; | |
1214 | } | |
1215 | ||
127e670a JK |
1216 | /* |
1217 | * update checkpoint pack index | |
1218 | * Increase the version number so that | |
1219 | * SIT entries and seg summaries are written at correct place | |
1220 | */ | |
d71b5564 | 1221 | ckpt_ver = cur_cp_version(ckpt); |
127e670a JK |
1222 | ckpt->checkpoint_ver = cpu_to_le64(++ckpt_ver); |
1223 | ||
1224 | /* write cached NAT/SIT entries to NAT/SIT area */ | |
1225 | flush_nat_entries(sbi); | |
4b2fecc8 | 1226 | flush_sit_entries(sbi, cpc); |
127e670a | 1227 | |
127e670a | 1228 | /* unlock all the fs_lock[] in do_checkpoint() */ |
c34f42e2 | 1229 | err = do_checkpoint(sbi, cpc); |
127e670a | 1230 | |
275b66b0 CY |
1231 | f2fs_wait_all_discard_bio(sbi); |
1232 | ||
127e670a | 1233 | unblock_operations(sbi); |
942e0be6 | 1234 | stat_inc_cp_count(sbi->stat_info); |
10027551 JK |
1235 | |
1236 | if (cpc->reason == CP_RECOVERY) | |
1237 | f2fs_msg(sbi->sb, KERN_NOTICE, | |
1238 | "checkpoint: version = %llx", ckpt_ver); | |
60b99b48 JK |
1239 | |
1240 | /* do checkpoint periodically */ | |
6beceb54 | 1241 | f2fs_update_time(sbi, CP_TIME); |
55d1cdb2 | 1242 | trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish checkpoint"); |
8501017e JK |
1243 | out: |
1244 | mutex_unlock(&sbi->cp_mutex); | |
c34f42e2 | 1245 | return err; |
127e670a JK |
1246 | } |
1247 | ||
6451e041 | 1248 | void init_ino_entry_info(struct f2fs_sb_info *sbi) |
127e670a | 1249 | { |
6451e041 JK |
1250 | int i; |
1251 | ||
1252 | for (i = 0; i < MAX_INO_ENTRY; i++) { | |
67298804 CY |
1253 | struct inode_management *im = &sbi->im[i]; |
1254 | ||
1255 | INIT_RADIX_TREE(&im->ino_root, GFP_ATOMIC); | |
1256 | spin_lock_init(&im->ino_lock); | |
1257 | INIT_LIST_HEAD(&im->ino_list); | |
1258 | im->ino_num = 0; | |
6451e041 JK |
1259 | } |
1260 | ||
b5b82205 | 1261 | sbi->max_orphans = (sbi->blocks_per_seg - F2FS_CP_PACKS - |
14b42817 WL |
1262 | NR_CURSEG_TYPE - __cp_payload(sbi)) * |
1263 | F2FS_ORPHANS_PER_BLOCK; | |
127e670a JK |
1264 | } |
1265 | ||
6e6093a8 | 1266 | int __init create_checkpoint_caches(void) |
127e670a | 1267 | { |
6451e041 JK |
1268 | ino_entry_slab = f2fs_kmem_cache_create("f2fs_ino_entry", |
1269 | sizeof(struct ino_entry)); | |
1270 | if (!ino_entry_slab) | |
127e670a | 1271 | return -ENOMEM; |
06292073 CY |
1272 | inode_entry_slab = f2fs_kmem_cache_create("f2fs_inode_entry", |
1273 | sizeof(struct inode_entry)); | |
6bacf52f | 1274 | if (!inode_entry_slab) { |
6451e041 | 1275 | kmem_cache_destroy(ino_entry_slab); |
127e670a JK |
1276 | return -ENOMEM; |
1277 | } | |
1278 | return 0; | |
1279 | } | |
1280 | ||
1281 | void destroy_checkpoint_caches(void) | |
1282 | { | |
6451e041 | 1283 | kmem_cache_destroy(ino_entry_slab); |
127e670a JK |
1284 | kmem_cache_destroy(inode_entry_slab); |
1285 | } |