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, | |
59 | .blk_addr = index, | |
4375a336 | 60 | .encrypted_page = NULL, |
cf04e8eb | 61 | }; |
2b947003 CY |
62 | |
63 | if (unlikely(!is_meta)) | |
64 | fio.rw &= ~REQ_META; | |
127e670a JK |
65 | repeat: |
66 | page = grab_cache_page(mapping, index); | |
67 | if (!page) { | |
68 | cond_resched(); | |
69 | goto repeat; | |
70 | } | |
393ff91f JK |
71 | if (PageUptodate(page)) |
72 | goto out; | |
73 | ||
05ca3632 JK |
74 | fio.page = page; |
75 | ||
86531d6b JK |
76 | if (f2fs_submit_page_bio(&fio)) { |
77 | f2fs_put_page(page, 1); | |
127e670a | 78 | goto repeat; |
86531d6b | 79 | } |
127e670a | 80 | |
393ff91f | 81 | lock_page(page); |
6bacf52f | 82 | if (unlikely(page->mapping != mapping)) { |
afcb7ca0 JK |
83 | f2fs_put_page(page, 1); |
84 | goto repeat; | |
85 | } | |
f3f338ca CY |
86 | |
87 | /* | |
88 | * if there is any IO error when accessing device, make our filesystem | |
89 | * readonly and make sure do not write checkpoint with non-uptodate | |
90 | * meta page. | |
91 | */ | |
92 | if (unlikely(!PageUptodate(page))) | |
93 | f2fs_stop_checkpoint(sbi); | |
393ff91f | 94 | out: |
127e670a JK |
95 | return page; |
96 | } | |
97 | ||
2b947003 CY |
98 | struct page *get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index) |
99 | { | |
100 | return __get_meta_page(sbi, index, true); | |
101 | } | |
102 | ||
103 | /* for POR only */ | |
104 | struct page *get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index) | |
105 | { | |
106 | return __get_meta_page(sbi, index, false); | |
107 | } | |
108 | ||
f0c9cada | 109 | bool is_valid_blkaddr(struct f2fs_sb_info *sbi, block_t blkaddr, int type) |
662befda CY |
110 | { |
111 | switch (type) { | |
112 | case META_NAT: | |
66b00c18 | 113 | break; |
662befda | 114 | case META_SIT: |
66b00c18 CY |
115 | if (unlikely(blkaddr >= SIT_BLK_CNT(sbi))) |
116 | return false; | |
117 | break; | |
81c1a0f1 | 118 | case META_SSA: |
66b00c18 CY |
119 | if (unlikely(blkaddr >= MAIN_BLKADDR(sbi) || |
120 | blkaddr < SM_I(sbi)->ssa_blkaddr)) | |
121 | return false; | |
122 | break; | |
662befda | 123 | case META_CP: |
66b00c18 CY |
124 | if (unlikely(blkaddr >= SIT_I(sbi)->sit_base_addr || |
125 | blkaddr < __start_cp_addr(sbi))) | |
126 | return false; | |
127 | break; | |
4c521f49 | 128 | case META_POR: |
66b00c18 CY |
129 | if (unlikely(blkaddr >= MAX_BLKADDR(sbi) || |
130 | blkaddr < MAIN_BLKADDR(sbi))) | |
131 | return false; | |
132 | break; | |
662befda CY |
133 | default: |
134 | BUG(); | |
135 | } | |
66b00c18 CY |
136 | |
137 | return true; | |
662befda CY |
138 | } |
139 | ||
140 | /* | |
81c1a0f1 | 141 | * Readahead CP/NAT/SIT/SSA pages |
662befda | 142 | */ |
26879fb1 CY |
143 | int ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages, |
144 | int type, bool sync) | |
662befda | 145 | { |
662befda | 146 | struct page *page; |
4c521f49 | 147 | block_t blkno = start; |
662befda | 148 | struct f2fs_io_info fio = { |
05ca3632 | 149 | .sbi = sbi, |
662befda | 150 | .type = META, |
26879fb1 | 151 | .rw = sync ? (READ_SYNC | REQ_META | REQ_PRIO) : READA, |
4375a336 | 152 | .encrypted_page = NULL, |
662befda | 153 | }; |
e9f5b8b8 | 154 | struct blk_plug plug; |
662befda | 155 | |
2b947003 CY |
156 | if (unlikely(type == META_POR)) |
157 | fio.rw &= ~REQ_META; | |
158 | ||
e9f5b8b8 | 159 | blk_start_plug(&plug); |
662befda | 160 | for (; nrpages-- > 0; blkno++) { |
662befda | 161 | |
66b00c18 CY |
162 | if (!is_valid_blkaddr(sbi, blkno, type)) |
163 | goto out; | |
164 | ||
662befda CY |
165 | switch (type) { |
166 | case META_NAT: | |
66b00c18 CY |
167 | if (unlikely(blkno >= |
168 | NAT_BLOCK_OFFSET(NM_I(sbi)->max_nid))) | |
662befda | 169 | blkno = 0; |
66b00c18 | 170 | /* get nat block addr */ |
cf04e8eb | 171 | fio.blk_addr = current_nat_addr(sbi, |
662befda CY |
172 | blkno * NAT_ENTRY_PER_BLOCK); |
173 | break; | |
174 | case META_SIT: | |
175 | /* get sit block addr */ | |
cf04e8eb | 176 | fio.blk_addr = current_sit_addr(sbi, |
662befda | 177 | blkno * SIT_ENTRY_PER_BLOCK); |
662befda | 178 | break; |
81c1a0f1 | 179 | case META_SSA: |
662befda | 180 | case META_CP: |
4c521f49 | 181 | case META_POR: |
cf04e8eb | 182 | fio.blk_addr = blkno; |
662befda CY |
183 | break; |
184 | default: | |
185 | BUG(); | |
186 | } | |
187 | ||
cf04e8eb | 188 | page = grab_cache_page(META_MAPPING(sbi), fio.blk_addr); |
662befda CY |
189 | if (!page) |
190 | continue; | |
191 | if (PageUptodate(page)) { | |
662befda CY |
192 | f2fs_put_page(page, 1); |
193 | continue; | |
194 | } | |
195 | ||
05ca3632 JK |
196 | fio.page = page; |
197 | f2fs_submit_page_mbio(&fio); | |
662befda CY |
198 | f2fs_put_page(page, 0); |
199 | } | |
200 | out: | |
201 | f2fs_submit_merged_bio(sbi, META, READ); | |
e9f5b8b8 | 202 | blk_finish_plug(&plug); |
662befda CY |
203 | return blkno - start; |
204 | } | |
205 | ||
635aee1f CY |
206 | void ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index) |
207 | { | |
208 | struct page *page; | |
209 | bool readahead = false; | |
210 | ||
211 | page = find_get_page(META_MAPPING(sbi), index); | |
212 | if (!page || (page && !PageUptodate(page))) | |
213 | readahead = true; | |
214 | f2fs_put_page(page, 0); | |
215 | ||
216 | if (readahead) | |
26879fb1 | 217 | ra_meta_pages(sbi, index, MAX_BIO_BLOCKS(sbi), META_POR, true); |
635aee1f CY |
218 | } |
219 | ||
127e670a JK |
220 | static int f2fs_write_meta_page(struct page *page, |
221 | struct writeback_control *wbc) | |
222 | { | |
4081363f | 223 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); |
127e670a | 224 | |
ecda0de3 CY |
225 | trace_f2fs_writepage(page, META); |
226 | ||
caf0047e | 227 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
cfb271d4 | 228 | goto redirty_out; |
857dc4e0 | 229 | if (wbc->for_reclaim && page->index < GET_SUM_BLOCK(sbi, 0)) |
cfb271d4 | 230 | goto redirty_out; |
1e968fdf | 231 | if (unlikely(f2fs_cp_error(sbi))) |
cf779cab | 232 | goto redirty_out; |
127e670a | 233 | |
577e3495 JK |
234 | write_meta_page(sbi, page); |
235 | dec_page_count(sbi, F2FS_DIRTY_META); | |
0c3a5797 CY |
236 | |
237 | if (wbc->for_reclaim) | |
238 | f2fs_submit_merged_bio_cond(sbi, NULL, page, 0, META, WRITE); | |
239 | ||
577e3495 | 240 | unlock_page(page); |
857dc4e0 | 241 | |
0c3a5797 | 242 | if (unlikely(f2fs_cp_error(sbi))) |
857dc4e0 | 243 | f2fs_submit_merged_bio(sbi, META, WRITE); |
0c3a5797 | 244 | |
577e3495 | 245 | return 0; |
cfb271d4 CY |
246 | |
247 | redirty_out: | |
76f60268 | 248 | redirty_page_for_writepage(wbc, page); |
cfb271d4 | 249 | return AOP_WRITEPAGE_ACTIVATE; |
127e670a JK |
250 | } |
251 | ||
252 | static int f2fs_write_meta_pages(struct address_space *mapping, | |
253 | struct writeback_control *wbc) | |
254 | { | |
4081363f | 255 | struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); |
50c8cdb3 | 256 | long diff, written; |
127e670a | 257 | |
5459aa97 | 258 | /* collect a number of dirty meta pages and write together */ |
50c8cdb3 JK |
259 | if (wbc->for_kupdate || |
260 | get_pages(sbi, F2FS_DIRTY_META) < nr_pages_to_skip(sbi, META)) | |
d3baf95d | 261 | goto skip_write; |
127e670a | 262 | |
d31c7c3f YH |
263 | trace_f2fs_writepages(mapping->host, wbc, META); |
264 | ||
127e670a JK |
265 | /* if mounting is failed, skip writing node pages */ |
266 | mutex_lock(&sbi->cp_mutex); | |
50c8cdb3 JK |
267 | diff = nr_pages_to_write(sbi, META, wbc); |
268 | written = sync_meta_pages(sbi, META, wbc->nr_to_write); | |
127e670a | 269 | mutex_unlock(&sbi->cp_mutex); |
50c8cdb3 | 270 | wbc->nr_to_write = max((long)0, wbc->nr_to_write - written - diff); |
127e670a | 271 | return 0; |
d3baf95d JK |
272 | |
273 | skip_write: | |
274 | wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_META); | |
d31c7c3f | 275 | trace_f2fs_writepages(mapping->host, wbc, META); |
d3baf95d | 276 | return 0; |
127e670a JK |
277 | } |
278 | ||
279 | long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type, | |
280 | long nr_to_write) | |
281 | { | |
9df27d98 | 282 | struct address_space *mapping = META_MAPPING(sbi); |
6066d8cd | 283 | pgoff_t index = 0, end = LONG_MAX, prev = LONG_MAX; |
127e670a JK |
284 | struct pagevec pvec; |
285 | long nwritten = 0; | |
286 | struct writeback_control wbc = { | |
287 | .for_reclaim = 0, | |
288 | }; | |
e9f5b8b8 | 289 | struct blk_plug plug; |
127e670a JK |
290 | |
291 | pagevec_init(&pvec, 0); | |
292 | ||
e9f5b8b8 CY |
293 | blk_start_plug(&plug); |
294 | ||
127e670a JK |
295 | while (index <= end) { |
296 | int i, nr_pages; | |
297 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &index, | |
298 | PAGECACHE_TAG_DIRTY, | |
299 | min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); | |
cfb271d4 | 300 | if (unlikely(nr_pages == 0)) |
127e670a JK |
301 | break; |
302 | ||
303 | for (i = 0; i < nr_pages; i++) { | |
304 | struct page *page = pvec.pages[i]; | |
203681f6 | 305 | |
6066d8cd JK |
306 | if (prev == LONG_MAX) |
307 | prev = page->index - 1; | |
308 | if (nr_to_write != LONG_MAX && page->index != prev + 1) { | |
309 | pagevec_release(&pvec); | |
310 | goto stop; | |
311 | } | |
312 | ||
127e670a | 313 | lock_page(page); |
203681f6 JK |
314 | |
315 | if (unlikely(page->mapping != mapping)) { | |
316 | continue_unlock: | |
317 | unlock_page(page); | |
318 | continue; | |
319 | } | |
320 | if (!PageDirty(page)) { | |
321 | /* someone wrote it for us */ | |
322 | goto continue_unlock; | |
323 | } | |
324 | ||
fa3d2bdf JK |
325 | f2fs_wait_on_page_writeback(page, META, true); |
326 | ||
327 | BUG_ON(PageWriteback(page)); | |
203681f6 JK |
328 | if (!clear_page_dirty_for_io(page)) |
329 | goto continue_unlock; | |
330 | ||
97dc3fd2 | 331 | if (mapping->a_ops->writepage(page, &wbc)) { |
577e3495 JK |
332 | unlock_page(page); |
333 | break; | |
334 | } | |
cfb271d4 | 335 | nwritten++; |
6066d8cd | 336 | prev = page->index; |
cfb271d4 | 337 | if (unlikely(nwritten >= nr_to_write)) |
127e670a JK |
338 | break; |
339 | } | |
340 | pagevec_release(&pvec); | |
341 | cond_resched(); | |
342 | } | |
6066d8cd | 343 | stop: |
127e670a | 344 | if (nwritten) |
458e6197 | 345 | f2fs_submit_merged_bio(sbi, type, WRITE); |
127e670a | 346 | |
e9f5b8b8 CY |
347 | blk_finish_plug(&plug); |
348 | ||
127e670a JK |
349 | return nwritten; |
350 | } | |
351 | ||
352 | static int f2fs_set_meta_page_dirty(struct page *page) | |
353 | { | |
26c6b887 JK |
354 | trace_f2fs_set_page_dirty(page, META); |
355 | ||
127e670a JK |
356 | SetPageUptodate(page); |
357 | if (!PageDirty(page)) { | |
358 | __set_page_dirty_nobuffers(page); | |
4081363f | 359 | inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_META); |
1601839e | 360 | SetPagePrivate(page); |
9e4ded3f | 361 | f2fs_trace_pid(page); |
127e670a JK |
362 | return 1; |
363 | } | |
364 | return 0; | |
365 | } | |
366 | ||
367 | const struct address_space_operations f2fs_meta_aops = { | |
368 | .writepage = f2fs_write_meta_page, | |
369 | .writepages = f2fs_write_meta_pages, | |
370 | .set_page_dirty = f2fs_set_meta_page_dirty, | |
487261f3 CY |
371 | .invalidatepage = f2fs_invalidate_page, |
372 | .releasepage = f2fs_release_page, | |
127e670a JK |
373 | }; |
374 | ||
6451e041 | 375 | static void __add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
953e6cc6 | 376 | { |
67298804 | 377 | struct inode_management *im = &sbi->im[type]; |
80c54505 JK |
378 | struct ino_entry *e, *tmp; |
379 | ||
380 | tmp = f2fs_kmem_cache_alloc(ino_entry_slab, GFP_NOFS); | |
39efac41 | 381 | retry: |
80c54505 | 382 | radix_tree_preload(GFP_NOFS | __GFP_NOFAIL); |
769ec6e5 | 383 | |
67298804 | 384 | spin_lock(&im->ino_lock); |
67298804 | 385 | e = radix_tree_lookup(&im->ino_root, ino); |
39efac41 | 386 | if (!e) { |
80c54505 | 387 | e = tmp; |
67298804 CY |
388 | if (radix_tree_insert(&im->ino_root, ino, e)) { |
389 | spin_unlock(&im->ino_lock); | |
769ec6e5 | 390 | radix_tree_preload_end(); |
39efac41 JK |
391 | goto retry; |
392 | } | |
393 | memset(e, 0, sizeof(struct ino_entry)); | |
394 | e->ino = ino; | |
953e6cc6 | 395 | |
67298804 | 396 | list_add_tail(&e->list, &im->ino_list); |
8c402946 | 397 | if (type != ORPHAN_INO) |
67298804 | 398 | im->ino_num++; |
39efac41 | 399 | } |
67298804 | 400 | spin_unlock(&im->ino_lock); |
769ec6e5 | 401 | radix_tree_preload_end(); |
80c54505 JK |
402 | |
403 | if (e != tmp) | |
404 | kmem_cache_free(ino_entry_slab, tmp); | |
953e6cc6 JK |
405 | } |
406 | ||
6451e041 | 407 | static void __remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
953e6cc6 | 408 | { |
67298804 | 409 | struct inode_management *im = &sbi->im[type]; |
6451e041 | 410 | struct ino_entry *e; |
953e6cc6 | 411 | |
67298804 CY |
412 | spin_lock(&im->ino_lock); |
413 | e = radix_tree_lookup(&im->ino_root, ino); | |
39efac41 JK |
414 | if (e) { |
415 | list_del(&e->list); | |
67298804 CY |
416 | radix_tree_delete(&im->ino_root, ino); |
417 | im->ino_num--; | |
418 | spin_unlock(&im->ino_lock); | |
39efac41 JK |
419 | kmem_cache_free(ino_entry_slab, e); |
420 | return; | |
953e6cc6 | 421 | } |
67298804 | 422 | spin_unlock(&im->ino_lock); |
953e6cc6 JK |
423 | } |
424 | ||
a49324f1 | 425 | void add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
fff04f90 JK |
426 | { |
427 | /* add new dirty ino entry into list */ | |
428 | __add_ino_entry(sbi, ino, type); | |
429 | } | |
430 | ||
a49324f1 | 431 | void remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
fff04f90 JK |
432 | { |
433 | /* remove dirty ino entry from list */ | |
434 | __remove_ino_entry(sbi, ino, type); | |
435 | } | |
436 | ||
437 | /* mode should be APPEND_INO or UPDATE_INO */ | |
438 | bool exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode) | |
439 | { | |
67298804 | 440 | struct inode_management *im = &sbi->im[mode]; |
fff04f90 | 441 | struct ino_entry *e; |
67298804 CY |
442 | |
443 | spin_lock(&im->ino_lock); | |
444 | e = radix_tree_lookup(&im->ino_root, ino); | |
445 | spin_unlock(&im->ino_lock); | |
fff04f90 JK |
446 | return e ? true : false; |
447 | } | |
448 | ||
a49324f1 | 449 | void release_ino_entry(struct f2fs_sb_info *sbi) |
fff04f90 JK |
450 | { |
451 | struct ino_entry *e, *tmp; | |
452 | int i; | |
453 | ||
454 | for (i = APPEND_INO; i <= UPDATE_INO; i++) { | |
67298804 CY |
455 | struct inode_management *im = &sbi->im[i]; |
456 | ||
457 | spin_lock(&im->ino_lock); | |
458 | list_for_each_entry_safe(e, tmp, &im->ino_list, list) { | |
fff04f90 | 459 | list_del(&e->list); |
67298804 | 460 | radix_tree_delete(&im->ino_root, e->ino); |
fff04f90 | 461 | kmem_cache_free(ino_entry_slab, e); |
67298804 | 462 | im->ino_num--; |
fff04f90 | 463 | } |
67298804 | 464 | spin_unlock(&im->ino_lock); |
fff04f90 JK |
465 | } |
466 | } | |
467 | ||
cbd56e7d | 468 | int acquire_orphan_inode(struct f2fs_sb_info *sbi) |
127e670a | 469 | { |
67298804 | 470 | struct inode_management *im = &sbi->im[ORPHAN_INO]; |
127e670a JK |
471 | int err = 0; |
472 | ||
67298804 CY |
473 | spin_lock(&im->ino_lock); |
474 | if (unlikely(im->ino_num >= sbi->max_orphans)) | |
127e670a | 475 | err = -ENOSPC; |
cbd56e7d | 476 | else |
67298804 CY |
477 | im->ino_num++; |
478 | spin_unlock(&im->ino_lock); | |
0d47c1ad | 479 | |
127e670a JK |
480 | return err; |
481 | } | |
482 | ||
cbd56e7d JK |
483 | void release_orphan_inode(struct f2fs_sb_info *sbi) |
484 | { | |
67298804 CY |
485 | struct inode_management *im = &sbi->im[ORPHAN_INO]; |
486 | ||
487 | spin_lock(&im->ino_lock); | |
488 | f2fs_bug_on(sbi, im->ino_num == 0); | |
489 | im->ino_num--; | |
490 | spin_unlock(&im->ino_lock); | |
cbd56e7d JK |
491 | } |
492 | ||
127e670a JK |
493 | void add_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) |
494 | { | |
39efac41 | 495 | /* add new orphan ino entry into list */ |
6451e041 | 496 | __add_ino_entry(sbi, ino, ORPHAN_INO); |
127e670a JK |
497 | } |
498 | ||
499 | void remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) | |
500 | { | |
953e6cc6 | 501 | /* remove orphan entry from orphan list */ |
6451e041 | 502 | __remove_ino_entry(sbi, ino, ORPHAN_INO); |
127e670a JK |
503 | } |
504 | ||
8c14bfad | 505 | static int recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) |
127e670a | 506 | { |
8c14bfad CY |
507 | struct inode *inode; |
508 | ||
509 | inode = f2fs_iget(sbi->sb, ino); | |
510 | if (IS_ERR(inode)) { | |
511 | /* | |
512 | * there should be a bug that we can't find the entry | |
513 | * to orphan inode. | |
514 | */ | |
515 | f2fs_bug_on(sbi, PTR_ERR(inode) == -ENOENT); | |
516 | return PTR_ERR(inode); | |
517 | } | |
518 | ||
127e670a JK |
519 | clear_nlink(inode); |
520 | ||
521 | /* truncate all the data during iput */ | |
522 | iput(inode); | |
8c14bfad | 523 | return 0; |
127e670a JK |
524 | } |
525 | ||
8c14bfad | 526 | int recover_orphan_inodes(struct f2fs_sb_info *sbi) |
127e670a | 527 | { |
3c642985 | 528 | block_t start_blk, orphan_blocks, i, j; |
8c14bfad | 529 | int err; |
127e670a | 530 | |
25ca923b | 531 | if (!is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG)) |
8c14bfad | 532 | return 0; |
127e670a | 533 | |
55141486 | 534 | start_blk = __start_cp_addr(sbi) + 1 + __cp_payload(sbi); |
3c642985 | 535 | orphan_blocks = __start_sum_addr(sbi) - 1 - __cp_payload(sbi); |
127e670a | 536 | |
26879fb1 | 537 | ra_meta_pages(sbi, start_blk, orphan_blocks, META_CP, true); |
662befda | 538 | |
3c642985 | 539 | for (i = 0; i < orphan_blocks; i++) { |
127e670a JK |
540 | struct page *page = get_meta_page(sbi, start_blk + i); |
541 | struct f2fs_orphan_block *orphan_blk; | |
542 | ||
543 | orphan_blk = (struct f2fs_orphan_block *)page_address(page); | |
544 | for (j = 0; j < le32_to_cpu(orphan_blk->entry_count); j++) { | |
545 | nid_t ino = le32_to_cpu(orphan_blk->ino[j]); | |
8c14bfad CY |
546 | err = recover_orphan_inode(sbi, ino); |
547 | if (err) { | |
548 | f2fs_put_page(page, 1); | |
8c14bfad CY |
549 | return err; |
550 | } | |
127e670a JK |
551 | } |
552 | f2fs_put_page(page, 1); | |
553 | } | |
554 | /* clear Orphan Flag */ | |
25ca923b | 555 | clear_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG); |
8c14bfad | 556 | return 0; |
127e670a JK |
557 | } |
558 | ||
559 | static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk) | |
560 | { | |
502c6e0b | 561 | struct list_head *head; |
127e670a | 562 | struct f2fs_orphan_block *orphan_blk = NULL; |
127e670a | 563 | unsigned int nentries = 0; |
bd936f84 | 564 | unsigned short index = 1; |
8c402946 | 565 | unsigned short orphan_blocks; |
4531929e | 566 | struct page *page = NULL; |
6451e041 | 567 | struct ino_entry *orphan = NULL; |
67298804 | 568 | struct inode_management *im = &sbi->im[ORPHAN_INO]; |
127e670a | 569 | |
67298804 | 570 | orphan_blocks = GET_ORPHAN_BLOCKS(im->ino_num); |
8c402946 | 571 | |
d6c67a4f JK |
572 | /* |
573 | * we don't need to do spin_lock(&im->ino_lock) here, since all the | |
574 | * orphan inode operations are covered under f2fs_lock_op(). | |
575 | * And, spin_lock should be avoided due to page operations below. | |
576 | */ | |
67298804 | 577 | head = &im->ino_list; |
127e670a JK |
578 | |
579 | /* loop for each orphan inode entry and write them in Jornal block */ | |
502c6e0b GZ |
580 | list_for_each_entry(orphan, head, list) { |
581 | if (!page) { | |
bd936f84 | 582 | page = grab_meta_page(sbi, start_blk++); |
502c6e0b GZ |
583 | orphan_blk = |
584 | (struct f2fs_orphan_block *)page_address(page); | |
585 | memset(orphan_blk, 0, sizeof(*orphan_blk)); | |
586 | } | |
127e670a | 587 | |
36795567 | 588 | orphan_blk->ino[nentries++] = cpu_to_le32(orphan->ino); |
127e670a | 589 | |
36795567 | 590 | if (nentries == F2FS_ORPHANS_PER_BLOCK) { |
127e670a JK |
591 | /* |
592 | * an orphan block is full of 1020 entries, | |
593 | * then we need to flush current orphan blocks | |
594 | * and bring another one in memory | |
595 | */ | |
596 | orphan_blk->blk_addr = cpu_to_le16(index); | |
597 | orphan_blk->blk_count = cpu_to_le16(orphan_blocks); | |
598 | orphan_blk->entry_count = cpu_to_le32(nentries); | |
599 | set_page_dirty(page); | |
600 | f2fs_put_page(page, 1); | |
601 | index++; | |
127e670a JK |
602 | nentries = 0; |
603 | page = NULL; | |
604 | } | |
502c6e0b | 605 | } |
127e670a | 606 | |
502c6e0b GZ |
607 | if (page) { |
608 | orphan_blk->blk_addr = cpu_to_le16(index); | |
609 | orphan_blk->blk_count = cpu_to_le16(orphan_blocks); | |
610 | orphan_blk->entry_count = cpu_to_le32(nentries); | |
611 | set_page_dirty(page); | |
612 | f2fs_put_page(page, 1); | |
127e670a | 613 | } |
127e670a JK |
614 | } |
615 | ||
616 | static struct page *validate_checkpoint(struct f2fs_sb_info *sbi, | |
617 | block_t cp_addr, unsigned long long *version) | |
618 | { | |
619 | struct page *cp_page_1, *cp_page_2 = NULL; | |
620 | unsigned long blk_size = sbi->blocksize; | |
621 | struct f2fs_checkpoint *cp_block; | |
622 | unsigned long long cur_version = 0, pre_version = 0; | |
127e670a | 623 | size_t crc_offset; |
7e586fa0 | 624 | __u32 crc = 0; |
127e670a JK |
625 | |
626 | /* Read the 1st cp block in this CP pack */ | |
627 | cp_page_1 = get_meta_page(sbi, cp_addr); | |
628 | ||
629 | /* get the version number */ | |
630 | cp_block = (struct f2fs_checkpoint *)page_address(cp_page_1); | |
631 | crc_offset = le32_to_cpu(cp_block->checksum_offset); | |
632 | if (crc_offset >= blk_size) | |
633 | goto invalid_cp1; | |
634 | ||
29e7043f | 635 | crc = le32_to_cpu(*((__le32 *)((unsigned char *)cp_block + crc_offset))); |
127e670a JK |
636 | if (!f2fs_crc_valid(crc, cp_block, crc_offset)) |
637 | goto invalid_cp1; | |
638 | ||
d71b5564 | 639 | pre_version = cur_cp_version(cp_block); |
127e670a JK |
640 | |
641 | /* Read the 2nd cp block in this CP pack */ | |
25ca923b | 642 | cp_addr += le32_to_cpu(cp_block->cp_pack_total_block_count) - 1; |
127e670a JK |
643 | cp_page_2 = get_meta_page(sbi, cp_addr); |
644 | ||
645 | cp_block = (struct f2fs_checkpoint *)page_address(cp_page_2); | |
646 | crc_offset = le32_to_cpu(cp_block->checksum_offset); | |
647 | if (crc_offset >= blk_size) | |
648 | goto invalid_cp2; | |
649 | ||
29e7043f | 650 | crc = le32_to_cpu(*((__le32 *)((unsigned char *)cp_block + crc_offset))); |
127e670a JK |
651 | if (!f2fs_crc_valid(crc, cp_block, crc_offset)) |
652 | goto invalid_cp2; | |
653 | ||
d71b5564 | 654 | cur_version = cur_cp_version(cp_block); |
127e670a JK |
655 | |
656 | if (cur_version == pre_version) { | |
657 | *version = cur_version; | |
658 | f2fs_put_page(cp_page_2, 1); | |
659 | return cp_page_1; | |
660 | } | |
661 | invalid_cp2: | |
662 | f2fs_put_page(cp_page_2, 1); | |
663 | invalid_cp1: | |
664 | f2fs_put_page(cp_page_1, 1); | |
665 | return NULL; | |
666 | } | |
667 | ||
668 | int get_valid_checkpoint(struct f2fs_sb_info *sbi) | |
669 | { | |
670 | struct f2fs_checkpoint *cp_block; | |
671 | struct f2fs_super_block *fsb = sbi->raw_super; | |
672 | struct page *cp1, *cp2, *cur_page; | |
673 | unsigned long blk_size = sbi->blocksize; | |
674 | unsigned long long cp1_version = 0, cp2_version = 0; | |
675 | unsigned long long cp_start_blk_no; | |
55141486 | 676 | unsigned int cp_blks = 1 + __cp_payload(sbi); |
1dbe4152 CL |
677 | block_t cp_blk_no; |
678 | int i; | |
127e670a | 679 | |
1dbe4152 | 680 | sbi->ckpt = kzalloc(cp_blks * blk_size, GFP_KERNEL); |
127e670a JK |
681 | if (!sbi->ckpt) |
682 | return -ENOMEM; | |
683 | /* | |
684 | * Finding out valid cp block involves read both | |
685 | * sets( cp pack1 and cp pack 2) | |
686 | */ | |
687 | cp_start_blk_no = le32_to_cpu(fsb->cp_blkaddr); | |
688 | cp1 = validate_checkpoint(sbi, cp_start_blk_no, &cp1_version); | |
689 | ||
690 | /* The second checkpoint pack should start at the next segment */ | |
f9a4e6df JK |
691 | cp_start_blk_no += ((unsigned long long)1) << |
692 | le32_to_cpu(fsb->log_blocks_per_seg); | |
127e670a JK |
693 | cp2 = validate_checkpoint(sbi, cp_start_blk_no, &cp2_version); |
694 | ||
695 | if (cp1 && cp2) { | |
696 | if (ver_after(cp2_version, cp1_version)) | |
697 | cur_page = cp2; | |
698 | else | |
699 | cur_page = cp1; | |
700 | } else if (cp1) { | |
701 | cur_page = cp1; | |
702 | } else if (cp2) { | |
703 | cur_page = cp2; | |
704 | } else { | |
705 | goto fail_no_cp; | |
706 | } | |
707 | ||
708 | cp_block = (struct f2fs_checkpoint *)page_address(cur_page); | |
709 | memcpy(sbi->ckpt, cp_block, blk_size); | |
710 | ||
1dbe4152 CL |
711 | if (cp_blks <= 1) |
712 | goto done; | |
713 | ||
714 | cp_blk_no = le32_to_cpu(fsb->cp_blkaddr); | |
715 | if (cur_page == cp2) | |
716 | cp_blk_no += 1 << le32_to_cpu(fsb->log_blocks_per_seg); | |
717 | ||
718 | for (i = 1; i < cp_blks; i++) { | |
719 | void *sit_bitmap_ptr; | |
720 | unsigned char *ckpt = (unsigned char *)sbi->ckpt; | |
721 | ||
722 | cur_page = get_meta_page(sbi, cp_blk_no + i); | |
723 | sit_bitmap_ptr = page_address(cur_page); | |
724 | memcpy(ckpt + i * blk_size, sit_bitmap_ptr, blk_size); | |
725 | f2fs_put_page(cur_page, 1); | |
726 | } | |
727 | done: | |
127e670a JK |
728 | f2fs_put_page(cp1, 1); |
729 | f2fs_put_page(cp2, 1); | |
730 | return 0; | |
731 | ||
732 | fail_no_cp: | |
733 | kfree(sbi->ckpt); | |
734 | return -EINVAL; | |
735 | } | |
736 | ||
c227f912 | 737 | static void __add_dirty_inode(struct inode *inode, enum inode_type type) |
127e670a | 738 | { |
4081363f | 739 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2710fd7e | 740 | struct f2fs_inode_info *fi = F2FS_I(inode); |
c227f912 | 741 | int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE; |
127e670a | 742 | |
c227f912 | 743 | if (is_inode_flag_set(fi, flag)) |
2710fd7e | 744 | return; |
2d7b822a | 745 | |
c227f912 CY |
746 | set_inode_flag(fi, flag); |
747 | list_add_tail(&fi->dirty_list, &sbi->inode_list[type]); | |
33fbd510 | 748 | stat_inc_dirty_inode(sbi, type); |
5deb8267 JK |
749 | } |
750 | ||
c227f912 | 751 | static void __remove_dirty_inode(struct inode *inode, enum inode_type type) |
6ad7609a | 752 | { |
6ad7609a | 753 | struct f2fs_inode_info *fi = F2FS_I(inode); |
c227f912 | 754 | int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE; |
6ad7609a CY |
755 | |
756 | if (get_dirty_pages(inode) || | |
c227f912 | 757 | !is_inode_flag_set(F2FS_I(inode), flag)) |
6ad7609a CY |
758 | return; |
759 | ||
760 | list_del_init(&fi->dirty_list); | |
c227f912 | 761 | clear_inode_flag(fi, flag); |
33fbd510 | 762 | stat_dec_dirty_inode(F2FS_I_SB(inode), type); |
6ad7609a CY |
763 | } |
764 | ||
a7ffdbe2 | 765 | void update_dirty_page(struct inode *inode, struct page *page) |
5deb8267 | 766 | { |
4081363f | 767 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
c227f912 | 768 | enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE; |
5deb8267 | 769 | |
5ac9f36f CY |
770 | if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) && |
771 | !S_ISLNK(inode->i_mode)) | |
127e670a | 772 | return; |
7bd59381 | 773 | |
c227f912 CY |
774 | spin_lock(&sbi->inode_lock[type]); |
775 | __add_dirty_inode(inode, type); | |
a7ffdbe2 | 776 | inode_inc_dirty_pages(inode); |
c227f912 | 777 | spin_unlock(&sbi->inode_lock[type]); |
cf0ee0f0 | 778 | |
a7ffdbe2 | 779 | SetPagePrivate(page); |
9e4ded3f | 780 | f2fs_trace_pid(page); |
5deb8267 JK |
781 | } |
782 | ||
783 | void add_dirty_dir_inode(struct inode *inode) | |
784 | { | |
4081363f | 785 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
127e670a | 786 | |
c227f912 CY |
787 | spin_lock(&sbi->inode_lock[DIR_INODE]); |
788 | __add_dirty_inode(inode, DIR_INODE); | |
789 | spin_unlock(&sbi->inode_lock[DIR_INODE]); | |
127e670a JK |
790 | } |
791 | ||
c227f912 | 792 | void remove_dirty_inode(struct inode *inode) |
127e670a | 793 | { |
4081363f | 794 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2710fd7e | 795 | struct f2fs_inode_info *fi = F2FS_I(inode); |
c227f912 | 796 | enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE; |
127e670a | 797 | |
c227f912 CY |
798 | if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) && |
799 | !S_ISLNK(inode->i_mode)) | |
127e670a JK |
800 | return; |
801 | ||
c227f912 CY |
802 | spin_lock(&sbi->inode_lock[type]); |
803 | __remove_dirty_inode(inode, type); | |
804 | spin_unlock(&sbi->inode_lock[type]); | |
74d0b917 JK |
805 | |
806 | /* Only from the recovery routine */ | |
2710fd7e CY |
807 | if (is_inode_flag_set(fi, FI_DELAY_IPUT)) { |
808 | clear_inode_flag(fi, FI_DELAY_IPUT); | |
74d0b917 | 809 | iput(inode); |
afc3eda2 | 810 | } |
74d0b917 JK |
811 | } |
812 | ||
6d5a1495 | 813 | int sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type) |
127e670a | 814 | { |
ce3b7d80 | 815 | struct list_head *head; |
127e670a | 816 | struct inode *inode; |
2710fd7e | 817 | struct f2fs_inode_info *fi; |
4cf18537 CY |
818 | bool is_dir = (type == DIR_INODE); |
819 | ||
820 | trace_f2fs_sync_dirty_inodes_enter(sbi->sb, is_dir, | |
821 | get_pages(sbi, is_dir ? | |
822 | F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA)); | |
127e670a | 823 | retry: |
af41d3ee | 824 | if (unlikely(f2fs_cp_error(sbi))) |
6d5a1495 | 825 | return -EIO; |
af41d3ee | 826 | |
c227f912 | 827 | spin_lock(&sbi->inode_lock[type]); |
ce3b7d80 | 828 | |
c227f912 | 829 | head = &sbi->inode_list[type]; |
127e670a | 830 | if (list_empty(head)) { |
c227f912 | 831 | spin_unlock(&sbi->inode_lock[type]); |
4cf18537 CY |
832 | trace_f2fs_sync_dirty_inodes_exit(sbi->sb, is_dir, |
833 | get_pages(sbi, is_dir ? | |
834 | F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA)); | |
6d5a1495 | 835 | return 0; |
127e670a | 836 | } |
2710fd7e CY |
837 | fi = list_entry(head->next, struct f2fs_inode_info, dirty_list); |
838 | inode = igrab(&fi->vfs_inode); | |
c227f912 | 839 | spin_unlock(&sbi->inode_lock[type]); |
127e670a | 840 | if (inode) { |
87d6f890 | 841 | filemap_fdatawrite(inode->i_mapping); |
127e670a JK |
842 | iput(inode); |
843 | } else { | |
844 | /* | |
845 | * We should submit bio, since it exists several | |
846 | * wribacking dentry pages in the freeing inode. | |
847 | */ | |
458e6197 | 848 | f2fs_submit_merged_bio(sbi, DATA, WRITE); |
7ecebe5e | 849 | cond_resched(); |
127e670a JK |
850 | } |
851 | goto retry; | |
852 | } | |
853 | ||
0a8165d7 | 854 | /* |
127e670a JK |
855 | * Freeze all the FS-operations for checkpoint. |
856 | */ | |
cf779cab | 857 | static int block_operations(struct f2fs_sb_info *sbi) |
127e670a | 858 | { |
127e670a JK |
859 | struct writeback_control wbc = { |
860 | .sync_mode = WB_SYNC_ALL, | |
861 | .nr_to_write = LONG_MAX, | |
862 | .for_reclaim = 0, | |
863 | }; | |
c718379b | 864 | struct blk_plug plug; |
cf779cab | 865 | int err = 0; |
c718379b JK |
866 | |
867 | blk_start_plug(&plug); | |
868 | ||
39936837 | 869 | retry_flush_dents: |
e479556b | 870 | f2fs_lock_all(sbi); |
127e670a | 871 | /* write all the dirty dentry pages */ |
127e670a | 872 | if (get_pages(sbi, F2FS_DIRTY_DENTS)) { |
e479556b | 873 | f2fs_unlock_all(sbi); |
6d5a1495 CY |
874 | err = sync_dirty_inodes(sbi, DIR_INODE); |
875 | if (err) | |
cf779cab | 876 | goto out; |
39936837 | 877 | goto retry_flush_dents; |
127e670a JK |
878 | } |
879 | ||
127e670a | 880 | /* |
e1c42045 | 881 | * POR: we should ensure that there are no dirty node pages |
127e670a JK |
882 | * until finishing nat/sit flush. |
883 | */ | |
39936837 | 884 | retry_flush_nodes: |
b3582c68 | 885 | down_write(&sbi->node_write); |
127e670a JK |
886 | |
887 | if (get_pages(sbi, F2FS_DIRTY_NODES)) { | |
b3582c68 | 888 | up_write(&sbi->node_write); |
6d5a1495 CY |
889 | err = sync_node_pages(sbi, 0, &wbc); |
890 | if (err) { | |
cf779cab | 891 | f2fs_unlock_all(sbi); |
cf779cab JK |
892 | goto out; |
893 | } | |
39936837 | 894 | goto retry_flush_nodes; |
127e670a | 895 | } |
cf779cab | 896 | out: |
c718379b | 897 | blk_finish_plug(&plug); |
cf779cab | 898 | return err; |
127e670a JK |
899 | } |
900 | ||
901 | static void unblock_operations(struct f2fs_sb_info *sbi) | |
902 | { | |
b3582c68 | 903 | up_write(&sbi->node_write); |
e479556b | 904 | f2fs_unlock_all(sbi); |
127e670a JK |
905 | } |
906 | ||
fb51b5ef CL |
907 | static void wait_on_all_pages_writeback(struct f2fs_sb_info *sbi) |
908 | { | |
909 | DEFINE_WAIT(wait); | |
910 | ||
911 | for (;;) { | |
912 | prepare_to_wait(&sbi->cp_wait, &wait, TASK_UNINTERRUPTIBLE); | |
913 | ||
914 | if (!get_pages(sbi, F2FS_WRITEBACK)) | |
915 | break; | |
916 | ||
917 | io_schedule(); | |
918 | } | |
919 | finish_wait(&sbi->cp_wait, &wait); | |
920 | } | |
921 | ||
c34f42e2 | 922 | static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
127e670a JK |
923 | { |
924 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
cf2271e7 | 925 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_WARM_NODE); |
77041823 | 926 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
67298804 | 927 | unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num; |
77041823 | 928 | nid_t last_nid = nm_i->next_scan_nid; |
127e670a | 929 | block_t start_blk; |
127e670a | 930 | unsigned int data_sum_blocks, orphan_blocks; |
7e586fa0 | 931 | __u32 crc32 = 0; |
127e670a | 932 | int i; |
55141486 | 933 | int cp_payload_blks = __cp_payload(sbi); |
e90c2d28 CY |
934 | block_t discard_blk = NEXT_FREE_BLKADDR(sbi, curseg); |
935 | bool invalidate = false; | |
8f1dbbbb SL |
936 | struct super_block *sb = sbi->sb; |
937 | struct curseg_info *seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE); | |
938 | u64 kbytes_written; | |
127e670a | 939 | |
1e87a78d JK |
940 | /* |
941 | * This avoids to conduct wrong roll-forward operations and uses | |
942 | * metapages, so should be called prior to sync_meta_pages below. | |
943 | */ | |
e90c2d28 CY |
944 | if (discard_next_dnode(sbi, discard_blk)) |
945 | invalidate = true; | |
127e670a JK |
946 | |
947 | /* Flush all the NAT/SIT pages */ | |
cf779cab | 948 | while (get_pages(sbi, F2FS_DIRTY_META)) { |
127e670a | 949 | sync_meta_pages(sbi, META, LONG_MAX); |
cf779cab | 950 | if (unlikely(f2fs_cp_error(sbi))) |
c34f42e2 | 951 | return -EIO; |
cf779cab | 952 | } |
127e670a JK |
953 | |
954 | next_free_nid(sbi, &last_nid); | |
955 | ||
956 | /* | |
957 | * modify checkpoint | |
958 | * version number is already updated | |
959 | */ | |
960 | ckpt->elapsed_time = cpu_to_le64(get_mtime(sbi)); | |
961 | ckpt->valid_block_count = cpu_to_le64(valid_user_blocks(sbi)); | |
962 | ckpt->free_segment_count = cpu_to_le32(free_segments(sbi)); | |
b5b82205 | 963 | for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { |
127e670a JK |
964 | ckpt->cur_node_segno[i] = |
965 | cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_NODE)); | |
966 | ckpt->cur_node_blkoff[i] = | |
967 | cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_NODE)); | |
968 | ckpt->alloc_type[i + CURSEG_HOT_NODE] = | |
969 | curseg_alloc_type(sbi, i + CURSEG_HOT_NODE); | |
970 | } | |
b5b82205 | 971 | for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) { |
127e670a JK |
972 | ckpt->cur_data_segno[i] = |
973 | cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_DATA)); | |
974 | ckpt->cur_data_blkoff[i] = | |
975 | cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_DATA)); | |
976 | ckpt->alloc_type[i + CURSEG_HOT_DATA] = | |
977 | curseg_alloc_type(sbi, i + CURSEG_HOT_DATA); | |
978 | } | |
979 | ||
980 | ckpt->valid_node_count = cpu_to_le32(valid_node_count(sbi)); | |
981 | ckpt->valid_inode_count = cpu_to_le32(valid_inode_count(sbi)); | |
982 | ckpt->next_free_nid = cpu_to_le32(last_nid); | |
983 | ||
984 | /* 2 cp + n data seg summary + orphan inode blocks */ | |
3fa06d7b | 985 | data_sum_blocks = npages_for_summary_flush(sbi, false); |
b5b82205 | 986 | if (data_sum_blocks < NR_CURSEG_DATA_TYPE) |
25ca923b | 987 | set_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); |
127e670a | 988 | else |
25ca923b | 989 | clear_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); |
127e670a | 990 | |
67298804 | 991 | orphan_blocks = GET_ORPHAN_BLOCKS(orphan_num); |
1dbe4152 CL |
992 | ckpt->cp_pack_start_sum = cpu_to_le32(1 + cp_payload_blks + |
993 | orphan_blocks); | |
127e670a | 994 | |
119ee914 | 995 | if (__remain_node_summaries(cpc->reason)) |
b5b82205 | 996 | ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS+ |
1dbe4152 CL |
997 | cp_payload_blks + data_sum_blocks + |
998 | orphan_blocks + NR_CURSEG_NODE_TYPE); | |
119ee914 | 999 | else |
b5b82205 | 1000 | ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS + |
1dbe4152 CL |
1001 | cp_payload_blks + data_sum_blocks + |
1002 | orphan_blocks); | |
119ee914 JK |
1003 | |
1004 | if (cpc->reason == CP_UMOUNT) | |
1005 | set_ckpt_flags(ckpt, CP_UMOUNT_FLAG); | |
1006 | else | |
1007 | clear_ckpt_flags(ckpt, CP_UMOUNT_FLAG); | |
1008 | ||
1009 | if (cpc->reason == CP_FASTBOOT) | |
1010 | set_ckpt_flags(ckpt, CP_FASTBOOT_FLAG); | |
1011 | else | |
1012 | clear_ckpt_flags(ckpt, CP_FASTBOOT_FLAG); | |
127e670a | 1013 | |
67298804 | 1014 | if (orphan_num) |
25ca923b | 1015 | set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); |
127e670a | 1016 | else |
25ca923b | 1017 | clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); |
127e670a | 1018 | |
caf0047e | 1019 | if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) |
2ae4c673 JK |
1020 | set_ckpt_flags(ckpt, CP_FSCK_FLAG); |
1021 | ||
127e670a JK |
1022 | /* update SIT/NAT bitmap */ |
1023 | get_sit_bitmap(sbi, __bitmap_ptr(sbi, SIT_BITMAP)); | |
1024 | get_nat_bitmap(sbi, __bitmap_ptr(sbi, NAT_BITMAP)); | |
1025 | ||
1026 | crc32 = f2fs_crc32(ckpt, le32_to_cpu(ckpt->checksum_offset)); | |
7e586fa0 JK |
1027 | *((__le32 *)((unsigned char *)ckpt + |
1028 | le32_to_cpu(ckpt->checksum_offset))) | |
127e670a JK |
1029 | = cpu_to_le32(crc32); |
1030 | ||
1031 | start_blk = __start_cp_addr(sbi); | |
1032 | ||
a7230d16 JK |
1033 | /* need to wait for end_io results */ |
1034 | wait_on_all_pages_writeback(sbi); | |
1035 | if (unlikely(f2fs_cp_error(sbi))) | |
c34f42e2 | 1036 | return -EIO; |
a7230d16 | 1037 | |
127e670a | 1038 | /* write out checkpoint buffer at block 0 */ |
381722d2 CY |
1039 | update_meta_page(sbi, ckpt, start_blk++); |
1040 | ||
1041 | for (i = 1; i < 1 + cp_payload_blks; i++) | |
1042 | update_meta_page(sbi, (char *)ckpt + i * F2FS_BLKSIZE, | |
1043 | start_blk++); | |
1dbe4152 | 1044 | |
67298804 | 1045 | if (orphan_num) { |
127e670a JK |
1046 | write_orphan_inodes(sbi, start_blk); |
1047 | start_blk += orphan_blocks; | |
1048 | } | |
1049 | ||
1050 | write_data_summaries(sbi, start_blk); | |
1051 | start_blk += data_sum_blocks; | |
8f1dbbbb SL |
1052 | |
1053 | /* Record write statistics in the hot node summary */ | |
1054 | kbytes_written = sbi->kbytes_written; | |
1055 | if (sb->s_bdev->bd_part) | |
1056 | kbytes_written += BD_PART_WRITTEN(sbi); | |
1057 | ||
b7ad7512 | 1058 | seg_i->journal->info.kbytes_written = cpu_to_le64(kbytes_written); |
8f1dbbbb | 1059 | |
119ee914 | 1060 | if (__remain_node_summaries(cpc->reason)) { |
127e670a JK |
1061 | write_node_summaries(sbi, start_blk); |
1062 | start_blk += NR_CURSEG_NODE_TYPE; | |
1063 | } | |
1064 | ||
1065 | /* writeout checkpoint block */ | |
381722d2 | 1066 | update_meta_page(sbi, ckpt, start_blk); |
127e670a JK |
1067 | |
1068 | /* wait for previous submitted node/meta pages writeback */ | |
fb51b5ef | 1069 | wait_on_all_pages_writeback(sbi); |
127e670a | 1070 | |
cf779cab | 1071 | if (unlikely(f2fs_cp_error(sbi))) |
c34f42e2 | 1072 | return -EIO; |
cf779cab | 1073 | |
4ef51a8f | 1074 | filemap_fdatawait_range(NODE_MAPPING(sbi), 0, LONG_MAX); |
9df27d98 | 1075 | filemap_fdatawait_range(META_MAPPING(sbi), 0, LONG_MAX); |
127e670a JK |
1076 | |
1077 | /* update user_block_counts */ | |
1078 | sbi->last_valid_block_count = sbi->total_valid_block_count; | |
1079 | sbi->alloc_valid_block_count = 0; | |
1080 | ||
1081 | /* Here, we only have one bio having CP pack */ | |
577e3495 | 1082 | sync_meta_pages(sbi, META_FLUSH, LONG_MAX); |
127e670a | 1083 | |
6a8f8ca5 JK |
1084 | /* wait for previous submitted meta pages writeback */ |
1085 | wait_on_all_pages_writeback(sbi); | |
1086 | ||
e90c2d28 CY |
1087 | /* |
1088 | * invalidate meta page which is used temporarily for zeroing out | |
1089 | * block at the end of warm node chain. | |
1090 | */ | |
1091 | if (invalidate) | |
1092 | invalidate_mapping_pages(META_MAPPING(sbi), discard_blk, | |
1093 | discard_blk); | |
1094 | ||
a49324f1 | 1095 | release_ino_entry(sbi); |
cf779cab JK |
1096 | |
1097 | if (unlikely(f2fs_cp_error(sbi))) | |
c34f42e2 | 1098 | return -EIO; |
cf779cab | 1099 | |
836b5a63 | 1100 | clear_prefree_segments(sbi, cpc); |
caf0047e | 1101 | clear_sbi_flag(sbi, SBI_IS_DIRTY); |
c34f42e2 CY |
1102 | |
1103 | return 0; | |
127e670a JK |
1104 | } |
1105 | ||
0a8165d7 | 1106 | /* |
e1c42045 | 1107 | * We guarantee that this checkpoint procedure will not fail. |
127e670a | 1108 | */ |
c34f42e2 | 1109 | int write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
127e670a JK |
1110 | { |
1111 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1112 | unsigned long long ckpt_ver; | |
c34f42e2 | 1113 | int err = 0; |
127e670a | 1114 | |
43727527 | 1115 | mutex_lock(&sbi->cp_mutex); |
8501017e | 1116 | |
caf0047e | 1117 | if (!is_sbi_flag_set(sbi, SBI_IS_DIRTY) && |
a66cdd98 JK |
1118 | (cpc->reason == CP_FASTBOOT || cpc->reason == CP_SYNC || |
1119 | (cpc->reason == CP_DISCARD && !sbi->discard_blks))) | |
8501017e | 1120 | goto out; |
c34f42e2 CY |
1121 | if (unlikely(f2fs_cp_error(sbi))) { |
1122 | err = -EIO; | |
cf779cab | 1123 | goto out; |
c34f42e2 CY |
1124 | } |
1125 | if (f2fs_readonly(sbi->sb)) { | |
1126 | err = -EROFS; | |
11504a8e | 1127 | goto out; |
c34f42e2 | 1128 | } |
2bda542d WL |
1129 | |
1130 | trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "start block_ops"); | |
1131 | ||
c34f42e2 CY |
1132 | err = block_operations(sbi); |
1133 | if (err) | |
cf779cab | 1134 | goto out; |
127e670a | 1135 | |
75ab4cb8 | 1136 | trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish block_ops"); |
2af4bd6c | 1137 | |
458e6197 JK |
1138 | f2fs_submit_merged_bio(sbi, DATA, WRITE); |
1139 | f2fs_submit_merged_bio(sbi, NODE, WRITE); | |
1140 | f2fs_submit_merged_bio(sbi, META, WRITE); | |
127e670a JK |
1141 | |
1142 | /* | |
1143 | * update checkpoint pack index | |
1144 | * Increase the version number so that | |
1145 | * SIT entries and seg summaries are written at correct place | |
1146 | */ | |
d71b5564 | 1147 | ckpt_ver = cur_cp_version(ckpt); |
127e670a JK |
1148 | ckpt->checkpoint_ver = cpu_to_le64(++ckpt_ver); |
1149 | ||
1150 | /* write cached NAT/SIT entries to NAT/SIT area */ | |
1151 | flush_nat_entries(sbi); | |
4b2fecc8 | 1152 | flush_sit_entries(sbi, cpc); |
127e670a | 1153 | |
127e670a | 1154 | /* unlock all the fs_lock[] in do_checkpoint() */ |
c34f42e2 | 1155 | err = do_checkpoint(sbi, cpc); |
127e670a JK |
1156 | |
1157 | unblock_operations(sbi); | |
942e0be6 | 1158 | stat_inc_cp_count(sbi->stat_info); |
10027551 JK |
1159 | |
1160 | if (cpc->reason == CP_RECOVERY) | |
1161 | f2fs_msg(sbi->sb, KERN_NOTICE, | |
1162 | "checkpoint: version = %llx", ckpt_ver); | |
60b99b48 JK |
1163 | |
1164 | /* do checkpoint periodically */ | |
6beceb54 | 1165 | f2fs_update_time(sbi, CP_TIME); |
55d1cdb2 | 1166 | trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish checkpoint"); |
8501017e JK |
1167 | out: |
1168 | mutex_unlock(&sbi->cp_mutex); | |
c34f42e2 | 1169 | return err; |
127e670a JK |
1170 | } |
1171 | ||
6451e041 | 1172 | void init_ino_entry_info(struct f2fs_sb_info *sbi) |
127e670a | 1173 | { |
6451e041 JK |
1174 | int i; |
1175 | ||
1176 | for (i = 0; i < MAX_INO_ENTRY; i++) { | |
67298804 CY |
1177 | struct inode_management *im = &sbi->im[i]; |
1178 | ||
1179 | INIT_RADIX_TREE(&im->ino_root, GFP_ATOMIC); | |
1180 | spin_lock_init(&im->ino_lock); | |
1181 | INIT_LIST_HEAD(&im->ino_list); | |
1182 | im->ino_num = 0; | |
6451e041 JK |
1183 | } |
1184 | ||
b5b82205 | 1185 | sbi->max_orphans = (sbi->blocks_per_seg - F2FS_CP_PACKS - |
14b42817 WL |
1186 | NR_CURSEG_TYPE - __cp_payload(sbi)) * |
1187 | F2FS_ORPHANS_PER_BLOCK; | |
127e670a JK |
1188 | } |
1189 | ||
6e6093a8 | 1190 | int __init create_checkpoint_caches(void) |
127e670a | 1191 | { |
6451e041 JK |
1192 | ino_entry_slab = f2fs_kmem_cache_create("f2fs_ino_entry", |
1193 | sizeof(struct ino_entry)); | |
1194 | if (!ino_entry_slab) | |
127e670a | 1195 | return -ENOMEM; |
06292073 CY |
1196 | inode_entry_slab = f2fs_kmem_cache_create("f2fs_inode_entry", |
1197 | sizeof(struct inode_entry)); | |
6bacf52f | 1198 | if (!inode_entry_slab) { |
6451e041 | 1199 | kmem_cache_destroy(ino_entry_slab); |
127e670a JK |
1200 | return -ENOMEM; |
1201 | } | |
1202 | return 0; | |
1203 | } | |
1204 | ||
1205 | void destroy_checkpoint_caches(void) | |
1206 | { | |
6451e041 | 1207 | kmem_cache_destroy(ino_entry_slab); |
127e670a JK |
1208 | kmem_cache_destroy(inode_entry_slab); |
1209 | } |