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 | |
0a8165d7 | 29 | /* |
127e670a JK |
30 | * We guarantee no failure on the returned page. |
31 | */ | |
32 | struct page *grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index) | |
33 | { | |
9df27d98 | 34 | struct address_space *mapping = META_MAPPING(sbi); |
127e670a JK |
35 | struct page *page = NULL; |
36 | repeat: | |
bde44686 | 37 | page = grab_cache_page(mapping, index); |
127e670a JK |
38 | if (!page) { |
39 | cond_resched(); | |
40 | goto repeat; | |
41 | } | |
fec1d657 | 42 | f2fs_wait_on_page_writeback(page, META, true); |
127e670a JK |
43 | SetPageUptodate(page); |
44 | return page; | |
45 | } | |
46 | ||
0a8165d7 | 47 | /* |
127e670a JK |
48 | * We guarantee no failure on the returned page. |
49 | */ | |
2b947003 CY |
50 | static struct page *__get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index, |
51 | bool is_meta) | |
127e670a | 52 | { |
9df27d98 | 53 | struct address_space *mapping = META_MAPPING(sbi); |
127e670a | 54 | struct page *page; |
cf04e8eb | 55 | struct f2fs_io_info fio = { |
05ca3632 | 56 | .sbi = sbi, |
cf04e8eb JK |
57 | .type = META, |
58 | .rw = READ_SYNC | REQ_META | REQ_PRIO, | |
7a9d7548 CY |
59 | .old_blkaddr = index, |
60 | .new_blkaddr = index, | |
4375a336 | 61 | .encrypted_page = NULL, |
cf04e8eb | 62 | }; |
2b947003 CY |
63 | |
64 | if (unlikely(!is_meta)) | |
65 | fio.rw &= ~REQ_META; | |
127e670a JK |
66 | repeat: |
67 | page = grab_cache_page(mapping, index); | |
68 | if (!page) { | |
69 | cond_resched(); | |
70 | goto repeat; | |
71 | } | |
393ff91f JK |
72 | if (PageUptodate(page)) |
73 | goto out; | |
74 | ||
05ca3632 JK |
75 | fio.page = page; |
76 | ||
86531d6b JK |
77 | if (f2fs_submit_page_bio(&fio)) { |
78 | f2fs_put_page(page, 1); | |
127e670a | 79 | goto repeat; |
86531d6b | 80 | } |
127e670a | 81 | |
393ff91f | 82 | lock_page(page); |
6bacf52f | 83 | if (unlikely(page->mapping != mapping)) { |
afcb7ca0 JK |
84 | f2fs_put_page(page, 1); |
85 | goto repeat; | |
86 | } | |
f3f338ca CY |
87 | |
88 | /* | |
89 | * if there is any IO error when accessing device, make our filesystem | |
90 | * readonly and make sure do not write checkpoint with non-uptodate | |
91 | * meta page. | |
92 | */ | |
93 | if (unlikely(!PageUptodate(page))) | |
94 | f2fs_stop_checkpoint(sbi); | |
393ff91f | 95 | out: |
127e670a JK |
96 | return page; |
97 | } | |
98 | ||
2b947003 CY |
99 | struct page *get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index) |
100 | { | |
101 | return __get_meta_page(sbi, index, true); | |
102 | } | |
103 | ||
104 | /* for POR only */ | |
105 | struct page *get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index) | |
106 | { | |
107 | return __get_meta_page(sbi, index, false); | |
108 | } | |
109 | ||
f0c9cada | 110 | bool is_valid_blkaddr(struct f2fs_sb_info *sbi, block_t blkaddr, int type) |
662befda CY |
111 | { |
112 | switch (type) { | |
113 | case META_NAT: | |
66b00c18 | 114 | break; |
662befda | 115 | case META_SIT: |
66b00c18 CY |
116 | if (unlikely(blkaddr >= SIT_BLK_CNT(sbi))) |
117 | return false; | |
118 | break; | |
81c1a0f1 | 119 | case META_SSA: |
66b00c18 CY |
120 | if (unlikely(blkaddr >= MAIN_BLKADDR(sbi) || |
121 | blkaddr < SM_I(sbi)->ssa_blkaddr)) | |
122 | return false; | |
123 | break; | |
662befda | 124 | case META_CP: |
66b00c18 CY |
125 | if (unlikely(blkaddr >= SIT_I(sbi)->sit_base_addr || |
126 | blkaddr < __start_cp_addr(sbi))) | |
127 | return false; | |
128 | break; | |
4c521f49 | 129 | case META_POR: |
66b00c18 CY |
130 | if (unlikely(blkaddr >= MAX_BLKADDR(sbi) || |
131 | blkaddr < MAIN_BLKADDR(sbi))) | |
132 | return false; | |
133 | break; | |
662befda CY |
134 | default: |
135 | BUG(); | |
136 | } | |
66b00c18 CY |
137 | |
138 | return true; | |
662befda CY |
139 | } |
140 | ||
141 | /* | |
81c1a0f1 | 142 | * Readahead CP/NAT/SIT/SSA pages |
662befda | 143 | */ |
26879fb1 CY |
144 | int ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages, |
145 | int type, bool sync) | |
662befda | 146 | { |
662befda | 147 | struct page *page; |
4c521f49 | 148 | block_t blkno = start; |
662befda | 149 | struct f2fs_io_info fio = { |
05ca3632 | 150 | .sbi = sbi, |
662befda | 151 | .type = META, |
26879fb1 | 152 | .rw = sync ? (READ_SYNC | REQ_META | REQ_PRIO) : READA, |
4375a336 | 153 | .encrypted_page = NULL, |
662befda | 154 | }; |
e9f5b8b8 | 155 | struct blk_plug plug; |
662befda | 156 | |
2b947003 CY |
157 | if (unlikely(type == META_POR)) |
158 | fio.rw &= ~REQ_META; | |
159 | ||
e9f5b8b8 | 160 | blk_start_plug(&plug); |
662befda | 161 | for (; nrpages-- > 0; blkno++) { |
662befda | 162 | |
66b00c18 CY |
163 | if (!is_valid_blkaddr(sbi, blkno, type)) |
164 | goto out; | |
165 | ||
662befda CY |
166 | switch (type) { |
167 | case META_NAT: | |
66b00c18 CY |
168 | if (unlikely(blkno >= |
169 | NAT_BLOCK_OFFSET(NM_I(sbi)->max_nid))) | |
662befda | 170 | blkno = 0; |
66b00c18 | 171 | /* get nat block addr */ |
7a9d7548 | 172 | fio.new_blkaddr = current_nat_addr(sbi, |
662befda CY |
173 | blkno * NAT_ENTRY_PER_BLOCK); |
174 | break; | |
175 | case META_SIT: | |
176 | /* get sit block addr */ | |
7a9d7548 | 177 | fio.new_blkaddr = current_sit_addr(sbi, |
662befda | 178 | blkno * SIT_ENTRY_PER_BLOCK); |
662befda | 179 | break; |
81c1a0f1 | 180 | case META_SSA: |
662befda | 181 | case META_CP: |
4c521f49 | 182 | case META_POR: |
7a9d7548 | 183 | fio.new_blkaddr = blkno; |
662befda CY |
184 | break; |
185 | default: | |
186 | BUG(); | |
187 | } | |
188 | ||
7a9d7548 | 189 | page = grab_cache_page(META_MAPPING(sbi), fio.new_blkaddr); |
662befda CY |
190 | if (!page) |
191 | continue; | |
192 | if (PageUptodate(page)) { | |
662befda CY |
193 | f2fs_put_page(page, 1); |
194 | continue; | |
195 | } | |
196 | ||
05ca3632 | 197 | fio.page = page; |
7a9d7548 | 198 | fio.old_blkaddr = fio.new_blkaddr; |
05ca3632 | 199 | f2fs_submit_page_mbio(&fio); |
662befda CY |
200 | f2fs_put_page(page, 0); |
201 | } | |
202 | out: | |
203 | f2fs_submit_merged_bio(sbi, META, READ); | |
e9f5b8b8 | 204 | blk_finish_plug(&plug); |
662befda CY |
205 | return blkno - start; |
206 | } | |
207 | ||
635aee1f CY |
208 | void ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index) |
209 | { | |
210 | struct page *page; | |
211 | bool readahead = false; | |
212 | ||
213 | page = find_get_page(META_MAPPING(sbi), index); | |
214 | if (!page || (page && !PageUptodate(page))) | |
215 | readahead = true; | |
216 | f2fs_put_page(page, 0); | |
217 | ||
218 | if (readahead) | |
26879fb1 | 219 | ra_meta_pages(sbi, index, MAX_BIO_BLOCKS(sbi), META_POR, true); |
635aee1f CY |
220 | } |
221 | ||
127e670a JK |
222 | static int f2fs_write_meta_page(struct page *page, |
223 | struct writeback_control *wbc) | |
224 | { | |
4081363f | 225 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); |
127e670a | 226 | |
ecda0de3 CY |
227 | trace_f2fs_writepage(page, META); |
228 | ||
caf0047e | 229 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
cfb271d4 | 230 | goto redirty_out; |
857dc4e0 | 231 | if (wbc->for_reclaim && page->index < GET_SUM_BLOCK(sbi, 0)) |
cfb271d4 | 232 | goto redirty_out; |
1e968fdf | 233 | if (unlikely(f2fs_cp_error(sbi))) |
cf779cab | 234 | goto redirty_out; |
127e670a | 235 | |
577e3495 JK |
236 | write_meta_page(sbi, page); |
237 | dec_page_count(sbi, F2FS_DIRTY_META); | |
0c3a5797 CY |
238 | |
239 | if (wbc->for_reclaim) | |
240 | f2fs_submit_merged_bio_cond(sbi, NULL, page, 0, META, WRITE); | |
241 | ||
577e3495 | 242 | unlock_page(page); |
857dc4e0 | 243 | |
0c3a5797 | 244 | if (unlikely(f2fs_cp_error(sbi))) |
857dc4e0 | 245 | f2fs_submit_merged_bio(sbi, META, WRITE); |
0c3a5797 | 246 | |
577e3495 | 247 | return 0; |
cfb271d4 CY |
248 | |
249 | redirty_out: | |
76f60268 | 250 | redirty_page_for_writepage(wbc, page); |
cfb271d4 | 251 | return AOP_WRITEPAGE_ACTIVATE; |
127e670a JK |
252 | } |
253 | ||
254 | static int f2fs_write_meta_pages(struct address_space *mapping, | |
255 | struct writeback_control *wbc) | |
256 | { | |
4081363f | 257 | struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); |
50c8cdb3 | 258 | long diff, written; |
127e670a | 259 | |
5459aa97 | 260 | /* collect a number of dirty meta pages and write together */ |
50c8cdb3 JK |
261 | if (wbc->for_kupdate || |
262 | get_pages(sbi, F2FS_DIRTY_META) < nr_pages_to_skip(sbi, META)) | |
d3baf95d | 263 | goto skip_write; |
127e670a | 264 | |
d31c7c3f YH |
265 | trace_f2fs_writepages(mapping->host, wbc, META); |
266 | ||
127e670a JK |
267 | /* if mounting is failed, skip writing node pages */ |
268 | mutex_lock(&sbi->cp_mutex); | |
50c8cdb3 JK |
269 | diff = nr_pages_to_write(sbi, META, wbc); |
270 | written = sync_meta_pages(sbi, META, wbc->nr_to_write); | |
127e670a | 271 | mutex_unlock(&sbi->cp_mutex); |
50c8cdb3 | 272 | wbc->nr_to_write = max((long)0, wbc->nr_to_write - written - diff); |
127e670a | 273 | return 0; |
d3baf95d JK |
274 | |
275 | skip_write: | |
276 | wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_META); | |
d31c7c3f | 277 | trace_f2fs_writepages(mapping->host, wbc, META); |
d3baf95d | 278 | return 0; |
127e670a JK |
279 | } |
280 | ||
281 | long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type, | |
282 | long nr_to_write) | |
283 | { | |
9df27d98 | 284 | struct address_space *mapping = META_MAPPING(sbi); |
80dd9c0e | 285 | pgoff_t index = 0, end = ULONG_MAX, prev = ULONG_MAX; |
127e670a JK |
286 | struct pagevec pvec; |
287 | long nwritten = 0; | |
288 | struct writeback_control wbc = { | |
289 | .for_reclaim = 0, | |
290 | }; | |
e9f5b8b8 | 291 | struct blk_plug plug; |
127e670a JK |
292 | |
293 | pagevec_init(&pvec, 0); | |
294 | ||
e9f5b8b8 CY |
295 | blk_start_plug(&plug); |
296 | ||
127e670a JK |
297 | while (index <= end) { |
298 | int i, nr_pages; | |
299 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &index, | |
300 | PAGECACHE_TAG_DIRTY, | |
301 | min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); | |
cfb271d4 | 302 | if (unlikely(nr_pages == 0)) |
127e670a JK |
303 | break; |
304 | ||
305 | for (i = 0; i < nr_pages; i++) { | |
306 | struct page *page = pvec.pages[i]; | |
203681f6 | 307 | |
80dd9c0e | 308 | if (prev == ULONG_MAX) |
6066d8cd JK |
309 | prev = page->index - 1; |
310 | if (nr_to_write != LONG_MAX && page->index != prev + 1) { | |
311 | pagevec_release(&pvec); | |
312 | goto stop; | |
313 | } | |
314 | ||
127e670a | 315 | lock_page(page); |
203681f6 JK |
316 | |
317 | if (unlikely(page->mapping != mapping)) { | |
318 | continue_unlock: | |
319 | unlock_page(page); | |
320 | continue; | |
321 | } | |
322 | if (!PageDirty(page)) { | |
323 | /* someone wrote it for us */ | |
324 | goto continue_unlock; | |
325 | } | |
326 | ||
fa3d2bdf JK |
327 | f2fs_wait_on_page_writeback(page, META, true); |
328 | ||
329 | BUG_ON(PageWriteback(page)); | |
203681f6 JK |
330 | if (!clear_page_dirty_for_io(page)) |
331 | goto continue_unlock; | |
332 | ||
97dc3fd2 | 333 | if (mapping->a_ops->writepage(page, &wbc)) { |
577e3495 JK |
334 | unlock_page(page); |
335 | break; | |
336 | } | |
cfb271d4 | 337 | nwritten++; |
6066d8cd | 338 | prev = page->index; |
cfb271d4 | 339 | if (unlikely(nwritten >= nr_to_write)) |
127e670a JK |
340 | break; |
341 | } | |
342 | pagevec_release(&pvec); | |
343 | cond_resched(); | |
344 | } | |
6066d8cd | 345 | stop: |
127e670a | 346 | if (nwritten) |
458e6197 | 347 | f2fs_submit_merged_bio(sbi, type, WRITE); |
127e670a | 348 | |
e9f5b8b8 CY |
349 | blk_finish_plug(&plug); |
350 | ||
127e670a JK |
351 | return nwritten; |
352 | } | |
353 | ||
354 | static int f2fs_set_meta_page_dirty(struct page *page) | |
355 | { | |
26c6b887 JK |
356 | trace_f2fs_set_page_dirty(page, META); |
357 | ||
127e670a JK |
358 | SetPageUptodate(page); |
359 | if (!PageDirty(page)) { | |
360 | __set_page_dirty_nobuffers(page); | |
4081363f | 361 | inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_META); |
1601839e | 362 | SetPagePrivate(page); |
9e4ded3f | 363 | f2fs_trace_pid(page); |
127e670a JK |
364 | return 1; |
365 | } | |
366 | return 0; | |
367 | } | |
368 | ||
369 | const struct address_space_operations f2fs_meta_aops = { | |
370 | .writepage = f2fs_write_meta_page, | |
371 | .writepages = f2fs_write_meta_pages, | |
372 | .set_page_dirty = f2fs_set_meta_page_dirty, | |
487261f3 CY |
373 | .invalidatepage = f2fs_invalidate_page, |
374 | .releasepage = f2fs_release_page, | |
127e670a JK |
375 | }; |
376 | ||
6451e041 | 377 | static void __add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
953e6cc6 | 378 | { |
67298804 | 379 | struct inode_management *im = &sbi->im[type]; |
80c54505 JK |
380 | struct ino_entry *e, *tmp; |
381 | ||
382 | tmp = f2fs_kmem_cache_alloc(ino_entry_slab, GFP_NOFS); | |
39efac41 | 383 | retry: |
80c54505 | 384 | radix_tree_preload(GFP_NOFS | __GFP_NOFAIL); |
769ec6e5 | 385 | |
67298804 | 386 | spin_lock(&im->ino_lock); |
67298804 | 387 | e = radix_tree_lookup(&im->ino_root, ino); |
39efac41 | 388 | if (!e) { |
80c54505 | 389 | e = tmp; |
67298804 CY |
390 | if (radix_tree_insert(&im->ino_root, ino, e)) { |
391 | spin_unlock(&im->ino_lock); | |
769ec6e5 | 392 | radix_tree_preload_end(); |
39efac41 JK |
393 | goto retry; |
394 | } | |
395 | memset(e, 0, sizeof(struct ino_entry)); | |
396 | e->ino = ino; | |
953e6cc6 | 397 | |
67298804 | 398 | list_add_tail(&e->list, &im->ino_list); |
8c402946 | 399 | if (type != ORPHAN_INO) |
67298804 | 400 | im->ino_num++; |
39efac41 | 401 | } |
67298804 | 402 | spin_unlock(&im->ino_lock); |
769ec6e5 | 403 | radix_tree_preload_end(); |
80c54505 JK |
404 | |
405 | if (e != tmp) | |
406 | kmem_cache_free(ino_entry_slab, tmp); | |
953e6cc6 JK |
407 | } |
408 | ||
6451e041 | 409 | static void __remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
953e6cc6 | 410 | { |
67298804 | 411 | struct inode_management *im = &sbi->im[type]; |
6451e041 | 412 | struct ino_entry *e; |
953e6cc6 | 413 | |
67298804 CY |
414 | spin_lock(&im->ino_lock); |
415 | e = radix_tree_lookup(&im->ino_root, ino); | |
39efac41 JK |
416 | if (e) { |
417 | list_del(&e->list); | |
67298804 CY |
418 | radix_tree_delete(&im->ino_root, ino); |
419 | im->ino_num--; | |
420 | spin_unlock(&im->ino_lock); | |
39efac41 JK |
421 | kmem_cache_free(ino_entry_slab, e); |
422 | return; | |
953e6cc6 | 423 | } |
67298804 | 424 | spin_unlock(&im->ino_lock); |
953e6cc6 JK |
425 | } |
426 | ||
a49324f1 | 427 | void add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
fff04f90 JK |
428 | { |
429 | /* add new dirty ino entry into list */ | |
430 | __add_ino_entry(sbi, ino, type); | |
431 | } | |
432 | ||
a49324f1 | 433 | void remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
fff04f90 JK |
434 | { |
435 | /* remove dirty ino entry from list */ | |
436 | __remove_ino_entry(sbi, ino, type); | |
437 | } | |
438 | ||
439 | /* mode should be APPEND_INO or UPDATE_INO */ | |
440 | bool exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode) | |
441 | { | |
67298804 | 442 | struct inode_management *im = &sbi->im[mode]; |
fff04f90 | 443 | struct ino_entry *e; |
67298804 CY |
444 | |
445 | spin_lock(&im->ino_lock); | |
446 | e = radix_tree_lookup(&im->ino_root, ino); | |
447 | spin_unlock(&im->ino_lock); | |
fff04f90 JK |
448 | return e ? true : false; |
449 | } | |
450 | ||
a49324f1 | 451 | void release_ino_entry(struct f2fs_sb_info *sbi) |
fff04f90 JK |
452 | { |
453 | struct ino_entry *e, *tmp; | |
454 | int i; | |
455 | ||
456 | for (i = APPEND_INO; i <= UPDATE_INO; i++) { | |
67298804 CY |
457 | struct inode_management *im = &sbi->im[i]; |
458 | ||
459 | spin_lock(&im->ino_lock); | |
460 | list_for_each_entry_safe(e, tmp, &im->ino_list, list) { | |
fff04f90 | 461 | list_del(&e->list); |
67298804 | 462 | radix_tree_delete(&im->ino_root, e->ino); |
fff04f90 | 463 | kmem_cache_free(ino_entry_slab, e); |
67298804 | 464 | im->ino_num--; |
fff04f90 | 465 | } |
67298804 | 466 | spin_unlock(&im->ino_lock); |
fff04f90 JK |
467 | } |
468 | } | |
469 | ||
cbd56e7d | 470 | int acquire_orphan_inode(struct f2fs_sb_info *sbi) |
127e670a | 471 | { |
67298804 | 472 | struct inode_management *im = &sbi->im[ORPHAN_INO]; |
127e670a JK |
473 | int err = 0; |
474 | ||
67298804 CY |
475 | spin_lock(&im->ino_lock); |
476 | if (unlikely(im->ino_num >= sbi->max_orphans)) | |
127e670a | 477 | err = -ENOSPC; |
cbd56e7d | 478 | else |
67298804 CY |
479 | im->ino_num++; |
480 | spin_unlock(&im->ino_lock); | |
0d47c1ad | 481 | |
127e670a JK |
482 | return err; |
483 | } | |
484 | ||
cbd56e7d JK |
485 | void release_orphan_inode(struct f2fs_sb_info *sbi) |
486 | { | |
67298804 CY |
487 | struct inode_management *im = &sbi->im[ORPHAN_INO]; |
488 | ||
489 | spin_lock(&im->ino_lock); | |
490 | f2fs_bug_on(sbi, im->ino_num == 0); | |
491 | im->ino_num--; | |
492 | spin_unlock(&im->ino_lock); | |
cbd56e7d JK |
493 | } |
494 | ||
127e670a JK |
495 | void add_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) |
496 | { | |
39efac41 | 497 | /* add new orphan ino entry into list */ |
6451e041 | 498 | __add_ino_entry(sbi, ino, ORPHAN_INO); |
127e670a JK |
499 | } |
500 | ||
501 | void remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) | |
502 | { | |
953e6cc6 | 503 | /* remove orphan entry from orphan list */ |
6451e041 | 504 | __remove_ino_entry(sbi, ino, ORPHAN_INO); |
127e670a JK |
505 | } |
506 | ||
8c14bfad | 507 | static int recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) |
127e670a | 508 | { |
8c14bfad CY |
509 | struct inode *inode; |
510 | ||
511 | inode = f2fs_iget(sbi->sb, ino); | |
512 | if (IS_ERR(inode)) { | |
513 | /* | |
514 | * there should be a bug that we can't find the entry | |
515 | * to orphan inode. | |
516 | */ | |
517 | f2fs_bug_on(sbi, PTR_ERR(inode) == -ENOENT); | |
518 | return PTR_ERR(inode); | |
519 | } | |
520 | ||
127e670a JK |
521 | clear_nlink(inode); |
522 | ||
523 | /* truncate all the data during iput */ | |
524 | iput(inode); | |
8c14bfad | 525 | return 0; |
127e670a JK |
526 | } |
527 | ||
8c14bfad | 528 | int recover_orphan_inodes(struct f2fs_sb_info *sbi) |
127e670a | 529 | { |
3c642985 | 530 | block_t start_blk, orphan_blocks, i, j; |
8c14bfad | 531 | int err; |
127e670a | 532 | |
25ca923b | 533 | if (!is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG)) |
8c14bfad | 534 | return 0; |
127e670a | 535 | |
55141486 | 536 | start_blk = __start_cp_addr(sbi) + 1 + __cp_payload(sbi); |
3c642985 | 537 | orphan_blocks = __start_sum_addr(sbi) - 1 - __cp_payload(sbi); |
127e670a | 538 | |
26879fb1 | 539 | ra_meta_pages(sbi, start_blk, orphan_blocks, META_CP, true); |
662befda | 540 | |
3c642985 | 541 | for (i = 0; i < orphan_blocks; i++) { |
127e670a JK |
542 | struct page *page = get_meta_page(sbi, start_blk + i); |
543 | struct f2fs_orphan_block *orphan_blk; | |
544 | ||
545 | orphan_blk = (struct f2fs_orphan_block *)page_address(page); | |
546 | for (j = 0; j < le32_to_cpu(orphan_blk->entry_count); j++) { | |
547 | nid_t ino = le32_to_cpu(orphan_blk->ino[j]); | |
8c14bfad CY |
548 | err = recover_orphan_inode(sbi, ino); |
549 | if (err) { | |
550 | f2fs_put_page(page, 1); | |
8c14bfad CY |
551 | return err; |
552 | } | |
127e670a JK |
553 | } |
554 | f2fs_put_page(page, 1); | |
555 | } | |
556 | /* clear Orphan Flag */ | |
25ca923b | 557 | clear_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG); |
8c14bfad | 558 | return 0; |
127e670a JK |
559 | } |
560 | ||
561 | static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk) | |
562 | { | |
502c6e0b | 563 | struct list_head *head; |
127e670a | 564 | struct f2fs_orphan_block *orphan_blk = NULL; |
127e670a | 565 | unsigned int nentries = 0; |
bd936f84 | 566 | unsigned short index = 1; |
8c402946 | 567 | unsigned short orphan_blocks; |
4531929e | 568 | struct page *page = NULL; |
6451e041 | 569 | struct ino_entry *orphan = NULL; |
67298804 | 570 | struct inode_management *im = &sbi->im[ORPHAN_INO]; |
127e670a | 571 | |
67298804 | 572 | orphan_blocks = GET_ORPHAN_BLOCKS(im->ino_num); |
8c402946 | 573 | |
d6c67a4f JK |
574 | /* |
575 | * we don't need to do spin_lock(&im->ino_lock) here, since all the | |
576 | * orphan inode operations are covered under f2fs_lock_op(). | |
577 | * And, spin_lock should be avoided due to page operations below. | |
578 | */ | |
67298804 | 579 | head = &im->ino_list; |
127e670a JK |
580 | |
581 | /* loop for each orphan inode entry and write them in Jornal block */ | |
502c6e0b GZ |
582 | list_for_each_entry(orphan, head, list) { |
583 | if (!page) { | |
bd936f84 | 584 | page = grab_meta_page(sbi, start_blk++); |
502c6e0b GZ |
585 | orphan_blk = |
586 | (struct f2fs_orphan_block *)page_address(page); | |
587 | memset(orphan_blk, 0, sizeof(*orphan_blk)); | |
588 | } | |
127e670a | 589 | |
36795567 | 590 | orphan_blk->ino[nentries++] = cpu_to_le32(orphan->ino); |
127e670a | 591 | |
36795567 | 592 | if (nentries == F2FS_ORPHANS_PER_BLOCK) { |
127e670a JK |
593 | /* |
594 | * an orphan block is full of 1020 entries, | |
595 | * then we need to flush current orphan blocks | |
596 | * and bring another one in memory | |
597 | */ | |
598 | orphan_blk->blk_addr = cpu_to_le16(index); | |
599 | orphan_blk->blk_count = cpu_to_le16(orphan_blocks); | |
600 | orphan_blk->entry_count = cpu_to_le32(nentries); | |
601 | set_page_dirty(page); | |
602 | f2fs_put_page(page, 1); | |
603 | index++; | |
127e670a JK |
604 | nentries = 0; |
605 | page = NULL; | |
606 | } | |
502c6e0b | 607 | } |
127e670a | 608 | |
502c6e0b GZ |
609 | if (page) { |
610 | orphan_blk->blk_addr = cpu_to_le16(index); | |
611 | orphan_blk->blk_count = cpu_to_le16(orphan_blocks); | |
612 | orphan_blk->entry_count = cpu_to_le32(nentries); | |
613 | set_page_dirty(page); | |
614 | f2fs_put_page(page, 1); | |
127e670a | 615 | } |
127e670a JK |
616 | } |
617 | ||
618 | static struct page *validate_checkpoint(struct f2fs_sb_info *sbi, | |
619 | block_t cp_addr, unsigned long long *version) | |
620 | { | |
621 | struct page *cp_page_1, *cp_page_2 = NULL; | |
622 | unsigned long blk_size = sbi->blocksize; | |
623 | struct f2fs_checkpoint *cp_block; | |
624 | unsigned long long cur_version = 0, pre_version = 0; | |
127e670a | 625 | size_t crc_offset; |
7e586fa0 | 626 | __u32 crc = 0; |
127e670a JK |
627 | |
628 | /* Read the 1st cp block in this CP pack */ | |
629 | cp_page_1 = get_meta_page(sbi, cp_addr); | |
630 | ||
631 | /* get the version number */ | |
632 | cp_block = (struct f2fs_checkpoint *)page_address(cp_page_1); | |
633 | crc_offset = le32_to_cpu(cp_block->checksum_offset); | |
634 | if (crc_offset >= blk_size) | |
635 | goto invalid_cp1; | |
636 | ||
29e7043f | 637 | crc = le32_to_cpu(*((__le32 *)((unsigned char *)cp_block + crc_offset))); |
43b6573b | 638 | if (!f2fs_crc_valid(sbi, crc, cp_block, crc_offset)) |
127e670a JK |
639 | goto invalid_cp1; |
640 | ||
d71b5564 | 641 | pre_version = cur_cp_version(cp_block); |
127e670a JK |
642 | |
643 | /* Read the 2nd cp block in this CP pack */ | |
25ca923b | 644 | cp_addr += le32_to_cpu(cp_block->cp_pack_total_block_count) - 1; |
127e670a JK |
645 | cp_page_2 = get_meta_page(sbi, cp_addr); |
646 | ||
647 | cp_block = (struct f2fs_checkpoint *)page_address(cp_page_2); | |
648 | crc_offset = le32_to_cpu(cp_block->checksum_offset); | |
649 | if (crc_offset >= blk_size) | |
650 | goto invalid_cp2; | |
651 | ||
29e7043f | 652 | crc = le32_to_cpu(*((__le32 *)((unsigned char *)cp_block + crc_offset))); |
43b6573b | 653 | if (!f2fs_crc_valid(sbi, crc, cp_block, crc_offset)) |
127e670a JK |
654 | goto invalid_cp2; |
655 | ||
d71b5564 | 656 | cur_version = cur_cp_version(cp_block); |
127e670a JK |
657 | |
658 | if (cur_version == pre_version) { | |
659 | *version = cur_version; | |
660 | f2fs_put_page(cp_page_2, 1); | |
661 | return cp_page_1; | |
662 | } | |
663 | invalid_cp2: | |
664 | f2fs_put_page(cp_page_2, 1); | |
665 | invalid_cp1: | |
666 | f2fs_put_page(cp_page_1, 1); | |
667 | return NULL; | |
668 | } | |
669 | ||
670 | int get_valid_checkpoint(struct f2fs_sb_info *sbi) | |
671 | { | |
672 | struct f2fs_checkpoint *cp_block; | |
673 | struct f2fs_super_block *fsb = sbi->raw_super; | |
674 | struct page *cp1, *cp2, *cur_page; | |
675 | unsigned long blk_size = sbi->blocksize; | |
676 | unsigned long long cp1_version = 0, cp2_version = 0; | |
677 | unsigned long long cp_start_blk_no; | |
55141486 | 678 | unsigned int cp_blks = 1 + __cp_payload(sbi); |
1dbe4152 CL |
679 | block_t cp_blk_no; |
680 | int i; | |
127e670a | 681 | |
1dbe4152 | 682 | sbi->ckpt = kzalloc(cp_blks * blk_size, GFP_KERNEL); |
127e670a JK |
683 | if (!sbi->ckpt) |
684 | return -ENOMEM; | |
685 | /* | |
686 | * Finding out valid cp block involves read both | |
687 | * sets( cp pack1 and cp pack 2) | |
688 | */ | |
689 | cp_start_blk_no = le32_to_cpu(fsb->cp_blkaddr); | |
690 | cp1 = validate_checkpoint(sbi, cp_start_blk_no, &cp1_version); | |
691 | ||
692 | /* The second checkpoint pack should start at the next segment */ | |
f9a4e6df JK |
693 | cp_start_blk_no += ((unsigned long long)1) << |
694 | le32_to_cpu(fsb->log_blocks_per_seg); | |
127e670a JK |
695 | cp2 = validate_checkpoint(sbi, cp_start_blk_no, &cp2_version); |
696 | ||
697 | if (cp1 && cp2) { | |
698 | if (ver_after(cp2_version, cp1_version)) | |
699 | cur_page = cp2; | |
700 | else | |
701 | cur_page = cp1; | |
702 | } else if (cp1) { | |
703 | cur_page = cp1; | |
704 | } else if (cp2) { | |
705 | cur_page = cp2; | |
706 | } else { | |
707 | goto fail_no_cp; | |
708 | } | |
709 | ||
710 | cp_block = (struct f2fs_checkpoint *)page_address(cur_page); | |
711 | memcpy(sbi->ckpt, cp_block, blk_size); | |
712 | ||
984ec63c SL |
713 | /* Sanity checking of checkpoint */ |
714 | if (sanity_check_ckpt(sbi)) | |
715 | goto fail_no_cp; | |
716 | ||
1dbe4152 CL |
717 | if (cp_blks <= 1) |
718 | goto done; | |
719 | ||
720 | cp_blk_no = le32_to_cpu(fsb->cp_blkaddr); | |
721 | if (cur_page == cp2) | |
722 | cp_blk_no += 1 << le32_to_cpu(fsb->log_blocks_per_seg); | |
723 | ||
724 | for (i = 1; i < cp_blks; i++) { | |
725 | void *sit_bitmap_ptr; | |
726 | unsigned char *ckpt = (unsigned char *)sbi->ckpt; | |
727 | ||
728 | cur_page = get_meta_page(sbi, cp_blk_no + i); | |
729 | sit_bitmap_ptr = page_address(cur_page); | |
730 | memcpy(ckpt + i * blk_size, sit_bitmap_ptr, blk_size); | |
731 | f2fs_put_page(cur_page, 1); | |
732 | } | |
733 | done: | |
127e670a JK |
734 | f2fs_put_page(cp1, 1); |
735 | f2fs_put_page(cp2, 1); | |
736 | return 0; | |
737 | ||
738 | fail_no_cp: | |
739 | kfree(sbi->ckpt); | |
740 | return -EINVAL; | |
741 | } | |
742 | ||
c227f912 | 743 | static void __add_dirty_inode(struct inode *inode, enum inode_type type) |
127e670a | 744 | { |
4081363f | 745 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2710fd7e | 746 | struct f2fs_inode_info *fi = F2FS_I(inode); |
c227f912 | 747 | int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE; |
127e670a | 748 | |
c227f912 | 749 | if (is_inode_flag_set(fi, flag)) |
2710fd7e | 750 | return; |
2d7b822a | 751 | |
c227f912 CY |
752 | set_inode_flag(fi, flag); |
753 | list_add_tail(&fi->dirty_list, &sbi->inode_list[type]); | |
33fbd510 | 754 | stat_inc_dirty_inode(sbi, type); |
5deb8267 JK |
755 | } |
756 | ||
c227f912 | 757 | static void __remove_dirty_inode(struct inode *inode, enum inode_type type) |
6ad7609a | 758 | { |
6ad7609a | 759 | struct f2fs_inode_info *fi = F2FS_I(inode); |
c227f912 | 760 | int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE; |
6ad7609a CY |
761 | |
762 | if (get_dirty_pages(inode) || | |
c227f912 | 763 | !is_inode_flag_set(F2FS_I(inode), flag)) |
6ad7609a CY |
764 | return; |
765 | ||
766 | list_del_init(&fi->dirty_list); | |
c227f912 | 767 | clear_inode_flag(fi, flag); |
33fbd510 | 768 | stat_dec_dirty_inode(F2FS_I_SB(inode), type); |
6ad7609a CY |
769 | } |
770 | ||
a7ffdbe2 | 771 | void update_dirty_page(struct inode *inode, struct page *page) |
5deb8267 | 772 | { |
4081363f | 773 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
c227f912 | 774 | enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE; |
5deb8267 | 775 | |
5ac9f36f CY |
776 | if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) && |
777 | !S_ISLNK(inode->i_mode)) | |
127e670a | 778 | return; |
7bd59381 | 779 | |
c227f912 CY |
780 | spin_lock(&sbi->inode_lock[type]); |
781 | __add_dirty_inode(inode, type); | |
a7ffdbe2 | 782 | inode_inc_dirty_pages(inode); |
c227f912 | 783 | spin_unlock(&sbi->inode_lock[type]); |
cf0ee0f0 | 784 | |
a7ffdbe2 | 785 | SetPagePrivate(page); |
9e4ded3f | 786 | f2fs_trace_pid(page); |
5deb8267 JK |
787 | } |
788 | ||
789 | void add_dirty_dir_inode(struct inode *inode) | |
790 | { | |
4081363f | 791 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
127e670a | 792 | |
c227f912 CY |
793 | spin_lock(&sbi->inode_lock[DIR_INODE]); |
794 | __add_dirty_inode(inode, DIR_INODE); | |
795 | spin_unlock(&sbi->inode_lock[DIR_INODE]); | |
127e670a JK |
796 | } |
797 | ||
c227f912 | 798 | void remove_dirty_inode(struct inode *inode) |
127e670a | 799 | { |
4081363f | 800 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2710fd7e | 801 | struct f2fs_inode_info *fi = F2FS_I(inode); |
c227f912 | 802 | enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE; |
127e670a | 803 | |
c227f912 CY |
804 | if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) && |
805 | !S_ISLNK(inode->i_mode)) | |
127e670a JK |
806 | return; |
807 | ||
c227f912 CY |
808 | spin_lock(&sbi->inode_lock[type]); |
809 | __remove_dirty_inode(inode, type); | |
810 | spin_unlock(&sbi->inode_lock[type]); | |
74d0b917 JK |
811 | |
812 | /* Only from the recovery routine */ | |
2710fd7e CY |
813 | if (is_inode_flag_set(fi, FI_DELAY_IPUT)) { |
814 | clear_inode_flag(fi, FI_DELAY_IPUT); | |
74d0b917 | 815 | iput(inode); |
afc3eda2 | 816 | } |
74d0b917 JK |
817 | } |
818 | ||
6d5a1495 | 819 | int sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type) |
127e670a | 820 | { |
ce3b7d80 | 821 | struct list_head *head; |
127e670a | 822 | struct inode *inode; |
2710fd7e | 823 | struct f2fs_inode_info *fi; |
4cf18537 CY |
824 | bool is_dir = (type == DIR_INODE); |
825 | ||
826 | trace_f2fs_sync_dirty_inodes_enter(sbi->sb, is_dir, | |
827 | get_pages(sbi, is_dir ? | |
828 | F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA)); | |
127e670a | 829 | retry: |
af41d3ee | 830 | if (unlikely(f2fs_cp_error(sbi))) |
6d5a1495 | 831 | return -EIO; |
af41d3ee | 832 | |
c227f912 | 833 | spin_lock(&sbi->inode_lock[type]); |
ce3b7d80 | 834 | |
c227f912 | 835 | head = &sbi->inode_list[type]; |
127e670a | 836 | if (list_empty(head)) { |
c227f912 | 837 | spin_unlock(&sbi->inode_lock[type]); |
4cf18537 CY |
838 | trace_f2fs_sync_dirty_inodes_exit(sbi->sb, is_dir, |
839 | get_pages(sbi, is_dir ? | |
840 | F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA)); | |
6d5a1495 | 841 | return 0; |
127e670a | 842 | } |
2710fd7e CY |
843 | fi = list_entry(head->next, struct f2fs_inode_info, dirty_list); |
844 | inode = igrab(&fi->vfs_inode); | |
c227f912 | 845 | spin_unlock(&sbi->inode_lock[type]); |
127e670a | 846 | if (inode) { |
87d6f890 | 847 | filemap_fdatawrite(inode->i_mapping); |
127e670a JK |
848 | iput(inode); |
849 | } else { | |
850 | /* | |
851 | * We should submit bio, since it exists several | |
852 | * wribacking dentry pages in the freeing inode. | |
853 | */ | |
458e6197 | 854 | f2fs_submit_merged_bio(sbi, DATA, WRITE); |
7ecebe5e | 855 | cond_resched(); |
127e670a JK |
856 | } |
857 | goto retry; | |
858 | } | |
859 | ||
0a8165d7 | 860 | /* |
127e670a JK |
861 | * Freeze all the FS-operations for checkpoint. |
862 | */ | |
cf779cab | 863 | static int block_operations(struct f2fs_sb_info *sbi) |
127e670a | 864 | { |
127e670a JK |
865 | struct writeback_control wbc = { |
866 | .sync_mode = WB_SYNC_ALL, | |
867 | .nr_to_write = LONG_MAX, | |
868 | .for_reclaim = 0, | |
869 | }; | |
c718379b | 870 | struct blk_plug plug; |
cf779cab | 871 | int err = 0; |
c718379b JK |
872 | |
873 | blk_start_plug(&plug); | |
874 | ||
39936837 | 875 | retry_flush_dents: |
e479556b | 876 | f2fs_lock_all(sbi); |
127e670a | 877 | /* write all the dirty dentry pages */ |
127e670a | 878 | if (get_pages(sbi, F2FS_DIRTY_DENTS)) { |
e479556b | 879 | f2fs_unlock_all(sbi); |
6d5a1495 CY |
880 | err = sync_dirty_inodes(sbi, DIR_INODE); |
881 | if (err) | |
cf779cab | 882 | goto out; |
39936837 | 883 | goto retry_flush_dents; |
127e670a JK |
884 | } |
885 | ||
127e670a | 886 | /* |
e1c42045 | 887 | * POR: we should ensure that there are no dirty node pages |
127e670a JK |
888 | * until finishing nat/sit flush. |
889 | */ | |
39936837 | 890 | retry_flush_nodes: |
b3582c68 | 891 | down_write(&sbi->node_write); |
127e670a JK |
892 | |
893 | if (get_pages(sbi, F2FS_DIRTY_NODES)) { | |
b3582c68 | 894 | up_write(&sbi->node_write); |
6d5a1495 CY |
895 | err = sync_node_pages(sbi, 0, &wbc); |
896 | if (err) { | |
cf779cab | 897 | f2fs_unlock_all(sbi); |
cf779cab JK |
898 | goto out; |
899 | } | |
39936837 | 900 | goto retry_flush_nodes; |
127e670a | 901 | } |
cf779cab | 902 | out: |
c718379b | 903 | blk_finish_plug(&plug); |
cf779cab | 904 | return err; |
127e670a JK |
905 | } |
906 | ||
907 | static void unblock_operations(struct f2fs_sb_info *sbi) | |
908 | { | |
b3582c68 | 909 | up_write(&sbi->node_write); |
e479556b | 910 | f2fs_unlock_all(sbi); |
127e670a JK |
911 | } |
912 | ||
fb51b5ef CL |
913 | static void wait_on_all_pages_writeback(struct f2fs_sb_info *sbi) |
914 | { | |
915 | DEFINE_WAIT(wait); | |
916 | ||
917 | for (;;) { | |
918 | prepare_to_wait(&sbi->cp_wait, &wait, TASK_UNINTERRUPTIBLE); | |
919 | ||
920 | if (!get_pages(sbi, F2FS_WRITEBACK)) | |
921 | break; | |
922 | ||
0ff21646 | 923 | io_schedule_timeout(5*HZ); |
fb51b5ef CL |
924 | } |
925 | finish_wait(&sbi->cp_wait, &wait); | |
926 | } | |
927 | ||
c34f42e2 | 928 | static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
127e670a JK |
929 | { |
930 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
cf2271e7 | 931 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_WARM_NODE); |
77041823 | 932 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
67298804 | 933 | unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num; |
77041823 | 934 | nid_t last_nid = nm_i->next_scan_nid; |
127e670a | 935 | block_t start_blk; |
127e670a | 936 | unsigned int data_sum_blocks, orphan_blocks; |
7e586fa0 | 937 | __u32 crc32 = 0; |
127e670a | 938 | int i; |
55141486 | 939 | int cp_payload_blks = __cp_payload(sbi); |
e90c2d28 CY |
940 | block_t discard_blk = NEXT_FREE_BLKADDR(sbi, curseg); |
941 | bool invalidate = false; | |
8f1dbbbb SL |
942 | struct super_block *sb = sbi->sb; |
943 | struct curseg_info *seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE); | |
944 | u64 kbytes_written; | |
127e670a | 945 | |
1e87a78d JK |
946 | /* |
947 | * This avoids to conduct wrong roll-forward operations and uses | |
948 | * metapages, so should be called prior to sync_meta_pages below. | |
949 | */ | |
e90c2d28 CY |
950 | if (discard_next_dnode(sbi, discard_blk)) |
951 | invalidate = true; | |
127e670a JK |
952 | |
953 | /* Flush all the NAT/SIT pages */ | |
cf779cab | 954 | while (get_pages(sbi, F2FS_DIRTY_META)) { |
127e670a | 955 | sync_meta_pages(sbi, META, LONG_MAX); |
cf779cab | 956 | if (unlikely(f2fs_cp_error(sbi))) |
c34f42e2 | 957 | return -EIO; |
cf779cab | 958 | } |
127e670a JK |
959 | |
960 | next_free_nid(sbi, &last_nid); | |
961 | ||
962 | /* | |
963 | * modify checkpoint | |
964 | * version number is already updated | |
965 | */ | |
966 | ckpt->elapsed_time = cpu_to_le64(get_mtime(sbi)); | |
967 | ckpt->valid_block_count = cpu_to_le64(valid_user_blocks(sbi)); | |
968 | ckpt->free_segment_count = cpu_to_le32(free_segments(sbi)); | |
b5b82205 | 969 | for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { |
127e670a JK |
970 | ckpt->cur_node_segno[i] = |
971 | cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_NODE)); | |
972 | ckpt->cur_node_blkoff[i] = | |
973 | cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_NODE)); | |
974 | ckpt->alloc_type[i + CURSEG_HOT_NODE] = | |
975 | curseg_alloc_type(sbi, i + CURSEG_HOT_NODE); | |
976 | } | |
b5b82205 | 977 | for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) { |
127e670a JK |
978 | ckpt->cur_data_segno[i] = |
979 | cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_DATA)); | |
980 | ckpt->cur_data_blkoff[i] = | |
981 | cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_DATA)); | |
982 | ckpt->alloc_type[i + CURSEG_HOT_DATA] = | |
983 | curseg_alloc_type(sbi, i + CURSEG_HOT_DATA); | |
984 | } | |
985 | ||
986 | ckpt->valid_node_count = cpu_to_le32(valid_node_count(sbi)); | |
987 | ckpt->valid_inode_count = cpu_to_le32(valid_inode_count(sbi)); | |
988 | ckpt->next_free_nid = cpu_to_le32(last_nid); | |
989 | ||
990 | /* 2 cp + n data seg summary + orphan inode blocks */ | |
3fa06d7b | 991 | data_sum_blocks = npages_for_summary_flush(sbi, false); |
b5b82205 | 992 | if (data_sum_blocks < NR_CURSEG_DATA_TYPE) |
25ca923b | 993 | set_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); |
127e670a | 994 | else |
25ca923b | 995 | clear_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); |
127e670a | 996 | |
67298804 | 997 | orphan_blocks = GET_ORPHAN_BLOCKS(orphan_num); |
1dbe4152 CL |
998 | ckpt->cp_pack_start_sum = cpu_to_le32(1 + cp_payload_blks + |
999 | orphan_blocks); | |
127e670a | 1000 | |
119ee914 | 1001 | if (__remain_node_summaries(cpc->reason)) |
b5b82205 | 1002 | ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS+ |
1dbe4152 CL |
1003 | cp_payload_blks + data_sum_blocks + |
1004 | orphan_blocks + NR_CURSEG_NODE_TYPE); | |
119ee914 | 1005 | else |
b5b82205 | 1006 | ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS + |
1dbe4152 CL |
1007 | cp_payload_blks + data_sum_blocks + |
1008 | orphan_blocks); | |
119ee914 JK |
1009 | |
1010 | if (cpc->reason == CP_UMOUNT) | |
1011 | set_ckpt_flags(ckpt, CP_UMOUNT_FLAG); | |
1012 | else | |
1013 | clear_ckpt_flags(ckpt, CP_UMOUNT_FLAG); | |
1014 | ||
1015 | if (cpc->reason == CP_FASTBOOT) | |
1016 | set_ckpt_flags(ckpt, CP_FASTBOOT_FLAG); | |
1017 | else | |
1018 | clear_ckpt_flags(ckpt, CP_FASTBOOT_FLAG); | |
127e670a | 1019 | |
67298804 | 1020 | if (orphan_num) |
25ca923b | 1021 | set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); |
127e670a | 1022 | else |
25ca923b | 1023 | clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); |
127e670a | 1024 | |
caf0047e | 1025 | if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) |
2ae4c673 JK |
1026 | set_ckpt_flags(ckpt, CP_FSCK_FLAG); |
1027 | ||
127e670a JK |
1028 | /* update SIT/NAT bitmap */ |
1029 | get_sit_bitmap(sbi, __bitmap_ptr(sbi, SIT_BITMAP)); | |
1030 | get_nat_bitmap(sbi, __bitmap_ptr(sbi, NAT_BITMAP)); | |
1031 | ||
43b6573b | 1032 | crc32 = f2fs_crc32(sbi, ckpt, le32_to_cpu(ckpt->checksum_offset)); |
7e586fa0 JK |
1033 | *((__le32 *)((unsigned char *)ckpt + |
1034 | le32_to_cpu(ckpt->checksum_offset))) | |
127e670a JK |
1035 | = cpu_to_le32(crc32); |
1036 | ||
1037 | start_blk = __start_cp_addr(sbi); | |
1038 | ||
a7230d16 JK |
1039 | /* need to wait for end_io results */ |
1040 | wait_on_all_pages_writeback(sbi); | |
1041 | if (unlikely(f2fs_cp_error(sbi))) | |
c34f42e2 | 1042 | return -EIO; |
a7230d16 | 1043 | |
127e670a | 1044 | /* write out checkpoint buffer at block 0 */ |
381722d2 CY |
1045 | update_meta_page(sbi, ckpt, start_blk++); |
1046 | ||
1047 | for (i = 1; i < 1 + cp_payload_blks; i++) | |
1048 | update_meta_page(sbi, (char *)ckpt + i * F2FS_BLKSIZE, | |
1049 | start_blk++); | |
1dbe4152 | 1050 | |
67298804 | 1051 | if (orphan_num) { |
127e670a JK |
1052 | write_orphan_inodes(sbi, start_blk); |
1053 | start_blk += orphan_blocks; | |
1054 | } | |
1055 | ||
1056 | write_data_summaries(sbi, start_blk); | |
1057 | start_blk += data_sum_blocks; | |
8f1dbbbb SL |
1058 | |
1059 | /* Record write statistics in the hot node summary */ | |
1060 | kbytes_written = sbi->kbytes_written; | |
1061 | if (sb->s_bdev->bd_part) | |
1062 | kbytes_written += BD_PART_WRITTEN(sbi); | |
1063 | ||
b7ad7512 | 1064 | seg_i->journal->info.kbytes_written = cpu_to_le64(kbytes_written); |
8f1dbbbb | 1065 | |
119ee914 | 1066 | if (__remain_node_summaries(cpc->reason)) { |
127e670a JK |
1067 | write_node_summaries(sbi, start_blk); |
1068 | start_blk += NR_CURSEG_NODE_TYPE; | |
1069 | } | |
1070 | ||
1071 | /* writeout checkpoint block */ | |
381722d2 | 1072 | update_meta_page(sbi, ckpt, start_blk); |
127e670a JK |
1073 | |
1074 | /* wait for previous submitted node/meta pages writeback */ | |
fb51b5ef | 1075 | wait_on_all_pages_writeback(sbi); |
127e670a | 1076 | |
cf779cab | 1077 | if (unlikely(f2fs_cp_error(sbi))) |
c34f42e2 | 1078 | return -EIO; |
cf779cab | 1079 | |
80dd9c0e CY |
1080 | filemap_fdatawait_range(NODE_MAPPING(sbi), 0, LLONG_MAX); |
1081 | filemap_fdatawait_range(META_MAPPING(sbi), 0, LLONG_MAX); | |
127e670a JK |
1082 | |
1083 | /* update user_block_counts */ | |
1084 | sbi->last_valid_block_count = sbi->total_valid_block_count; | |
1085 | sbi->alloc_valid_block_count = 0; | |
1086 | ||
1087 | /* Here, we only have one bio having CP pack */ | |
577e3495 | 1088 | sync_meta_pages(sbi, META_FLUSH, LONG_MAX); |
127e670a | 1089 | |
6a8f8ca5 JK |
1090 | /* wait for previous submitted meta pages writeback */ |
1091 | wait_on_all_pages_writeback(sbi); | |
1092 | ||
e90c2d28 CY |
1093 | /* |
1094 | * invalidate meta page which is used temporarily for zeroing out | |
1095 | * block at the end of warm node chain. | |
1096 | */ | |
1097 | if (invalidate) | |
1098 | invalidate_mapping_pages(META_MAPPING(sbi), discard_blk, | |
1099 | discard_blk); | |
1100 | ||
a49324f1 | 1101 | release_ino_entry(sbi); |
cf779cab JK |
1102 | |
1103 | if (unlikely(f2fs_cp_error(sbi))) | |
c34f42e2 | 1104 | return -EIO; |
cf779cab | 1105 | |
836b5a63 | 1106 | clear_prefree_segments(sbi, cpc); |
caf0047e | 1107 | clear_sbi_flag(sbi, SBI_IS_DIRTY); |
c34f42e2 CY |
1108 | |
1109 | return 0; | |
127e670a JK |
1110 | } |
1111 | ||
0a8165d7 | 1112 | /* |
e1c42045 | 1113 | * We guarantee that this checkpoint procedure will not fail. |
127e670a | 1114 | */ |
c34f42e2 | 1115 | int write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
127e670a JK |
1116 | { |
1117 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1118 | unsigned long long ckpt_ver; | |
c34f42e2 | 1119 | int err = 0; |
127e670a | 1120 | |
43727527 | 1121 | mutex_lock(&sbi->cp_mutex); |
8501017e | 1122 | |
caf0047e | 1123 | if (!is_sbi_flag_set(sbi, SBI_IS_DIRTY) && |
a66cdd98 JK |
1124 | (cpc->reason == CP_FASTBOOT || cpc->reason == CP_SYNC || |
1125 | (cpc->reason == CP_DISCARD && !sbi->discard_blks))) | |
8501017e | 1126 | goto out; |
c34f42e2 CY |
1127 | if (unlikely(f2fs_cp_error(sbi))) { |
1128 | err = -EIO; | |
cf779cab | 1129 | goto out; |
c34f42e2 CY |
1130 | } |
1131 | if (f2fs_readonly(sbi->sb)) { | |
1132 | err = -EROFS; | |
11504a8e | 1133 | goto out; |
c34f42e2 | 1134 | } |
2bda542d WL |
1135 | |
1136 | trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "start block_ops"); | |
1137 | ||
c34f42e2 CY |
1138 | err = block_operations(sbi); |
1139 | if (err) | |
cf779cab | 1140 | goto out; |
127e670a | 1141 | |
75ab4cb8 | 1142 | trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish block_ops"); |
2af4bd6c | 1143 | |
406657dd | 1144 | f2fs_flush_merged_bios(sbi); |
127e670a JK |
1145 | |
1146 | /* | |
1147 | * update checkpoint pack index | |
1148 | * Increase the version number so that | |
1149 | * SIT entries and seg summaries are written at correct place | |
1150 | */ | |
d71b5564 | 1151 | ckpt_ver = cur_cp_version(ckpt); |
127e670a JK |
1152 | ckpt->checkpoint_ver = cpu_to_le64(++ckpt_ver); |
1153 | ||
1154 | /* write cached NAT/SIT entries to NAT/SIT area */ | |
1155 | flush_nat_entries(sbi); | |
4b2fecc8 | 1156 | flush_sit_entries(sbi, cpc); |
127e670a | 1157 | |
127e670a | 1158 | /* unlock all the fs_lock[] in do_checkpoint() */ |
c34f42e2 | 1159 | err = do_checkpoint(sbi, cpc); |
127e670a JK |
1160 | |
1161 | unblock_operations(sbi); | |
942e0be6 | 1162 | stat_inc_cp_count(sbi->stat_info); |
10027551 JK |
1163 | |
1164 | if (cpc->reason == CP_RECOVERY) | |
1165 | f2fs_msg(sbi->sb, KERN_NOTICE, | |
1166 | "checkpoint: version = %llx", ckpt_ver); | |
60b99b48 JK |
1167 | |
1168 | /* do checkpoint periodically */ | |
6beceb54 | 1169 | f2fs_update_time(sbi, CP_TIME); |
55d1cdb2 | 1170 | trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish checkpoint"); |
8501017e JK |
1171 | out: |
1172 | mutex_unlock(&sbi->cp_mutex); | |
c34f42e2 | 1173 | return err; |
127e670a JK |
1174 | } |
1175 | ||
6451e041 | 1176 | void init_ino_entry_info(struct f2fs_sb_info *sbi) |
127e670a | 1177 | { |
6451e041 JK |
1178 | int i; |
1179 | ||
1180 | for (i = 0; i < MAX_INO_ENTRY; i++) { | |
67298804 CY |
1181 | struct inode_management *im = &sbi->im[i]; |
1182 | ||
1183 | INIT_RADIX_TREE(&im->ino_root, GFP_ATOMIC); | |
1184 | spin_lock_init(&im->ino_lock); | |
1185 | INIT_LIST_HEAD(&im->ino_list); | |
1186 | im->ino_num = 0; | |
6451e041 JK |
1187 | } |
1188 | ||
b5b82205 | 1189 | sbi->max_orphans = (sbi->blocks_per_seg - F2FS_CP_PACKS - |
14b42817 WL |
1190 | NR_CURSEG_TYPE - __cp_payload(sbi)) * |
1191 | F2FS_ORPHANS_PER_BLOCK; | |
127e670a JK |
1192 | } |
1193 | ||
6e6093a8 | 1194 | int __init create_checkpoint_caches(void) |
127e670a | 1195 | { |
6451e041 JK |
1196 | ino_entry_slab = f2fs_kmem_cache_create("f2fs_ino_entry", |
1197 | sizeof(struct ino_entry)); | |
1198 | if (!ino_entry_slab) | |
127e670a | 1199 | return -ENOMEM; |
06292073 CY |
1200 | inode_entry_slab = f2fs_kmem_cache_create("f2fs_inode_entry", |
1201 | sizeof(struct inode_entry)); | |
6bacf52f | 1202 | if (!inode_entry_slab) { |
6451e041 | 1203 | kmem_cache_destroy(ino_entry_slab); |
127e670a JK |
1204 | return -ENOMEM; |
1205 | } | |
1206 | return 0; | |
1207 | } | |
1208 | ||
1209 | void destroy_checkpoint_caches(void) | |
1210 | { | |
6451e041 | 1211 | kmem_cache_destroy(ino_entry_slab); |
127e670a JK |
1212 | kmem_cache_destroy(inode_entry_slab); |
1213 | } |