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Commit | Line | Data |
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0a8165d7 | 1 | /* |
127e670a JK |
2 | * fs/f2fs/checkpoint.c |
3 | * | |
4 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
5 | * http://www.samsung.com/ | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | #include <linux/fs.h> | |
12 | #include <linux/bio.h> | |
13 | #include <linux/mpage.h> | |
14 | #include <linux/writeback.h> | |
15 | #include <linux/blkdev.h> | |
16 | #include <linux/f2fs_fs.h> | |
17 | #include <linux/pagevec.h> | |
18 | #include <linux/swap.h> | |
19 | ||
20 | #include "f2fs.h" | |
21 | #include "node.h" | |
22 | #include "segment.h" | |
2af4bd6c | 23 | #include <trace/events/f2fs.h> |
127e670a | 24 | |
6451e041 | 25 | static struct kmem_cache *ino_entry_slab; |
127e670a JK |
26 | static struct kmem_cache *inode_entry_slab; |
27 | ||
0a8165d7 | 28 | /* |
127e670a JK |
29 | * We guarantee no failure on the returned page. |
30 | */ | |
31 | struct page *grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index) | |
32 | { | |
9df27d98 | 33 | struct address_space *mapping = META_MAPPING(sbi); |
127e670a JK |
34 | struct page *page = NULL; |
35 | repeat: | |
bde44686 | 36 | page = grab_cache_page(mapping, index); |
127e670a JK |
37 | if (!page) { |
38 | cond_resched(); | |
39 | goto repeat; | |
40 | } | |
bde44686 | 41 | f2fs_wait_on_page_writeback(page, META); |
127e670a JK |
42 | SetPageUptodate(page); |
43 | return page; | |
44 | } | |
45 | ||
0a8165d7 | 46 | /* |
127e670a JK |
47 | * We guarantee no failure on the returned page. |
48 | */ | |
49 | struct page *get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index) | |
50 | { | |
9df27d98 | 51 | struct address_space *mapping = META_MAPPING(sbi); |
127e670a JK |
52 | struct page *page; |
53 | repeat: | |
54 | page = grab_cache_page(mapping, index); | |
55 | if (!page) { | |
56 | cond_resched(); | |
57 | goto repeat; | |
58 | } | |
393ff91f JK |
59 | if (PageUptodate(page)) |
60 | goto out; | |
61 | ||
93dfe2ac JK |
62 | if (f2fs_submit_page_bio(sbi, page, index, |
63 | READ_SYNC | REQ_META | REQ_PRIO)) | |
127e670a | 64 | goto repeat; |
127e670a | 65 | |
393ff91f | 66 | lock_page(page); |
6bacf52f | 67 | if (unlikely(page->mapping != mapping)) { |
afcb7ca0 JK |
68 | f2fs_put_page(page, 1); |
69 | goto repeat; | |
70 | } | |
393ff91f | 71 | out: |
127e670a JK |
72 | return page; |
73 | } | |
74 | ||
b49ad51e | 75 | static inline int get_max_meta_blks(struct f2fs_sb_info *sbi, int type) |
662befda CY |
76 | { |
77 | switch (type) { | |
78 | case META_NAT: | |
79 | return NM_I(sbi)->max_nid / NAT_ENTRY_PER_BLOCK; | |
80 | case META_SIT: | |
81 | return SIT_BLK_CNT(sbi); | |
81c1a0f1 | 82 | case META_SSA: |
662befda CY |
83 | case META_CP: |
84 | return 0; | |
85 | default: | |
86 | BUG(); | |
87 | } | |
88 | } | |
89 | ||
90 | /* | |
81c1a0f1 | 91 | * Readahead CP/NAT/SIT/SSA pages |
662befda CY |
92 | */ |
93 | int ra_meta_pages(struct f2fs_sb_info *sbi, int start, int nrpages, int type) | |
94 | { | |
95 | block_t prev_blk_addr = 0; | |
96 | struct page *page; | |
97 | int blkno = start; | |
98 | int max_blks = get_max_meta_blks(sbi, type); | |
99 | ||
100 | struct f2fs_io_info fio = { | |
101 | .type = META, | |
102 | .rw = READ_SYNC | REQ_META | REQ_PRIO | |
103 | }; | |
104 | ||
105 | for (; nrpages-- > 0; blkno++) { | |
106 | block_t blk_addr; | |
107 | ||
108 | switch (type) { | |
109 | case META_NAT: | |
110 | /* get nat block addr */ | |
111 | if (unlikely(blkno >= max_blks)) | |
112 | blkno = 0; | |
113 | blk_addr = current_nat_addr(sbi, | |
114 | blkno * NAT_ENTRY_PER_BLOCK); | |
115 | break; | |
116 | case META_SIT: | |
117 | /* get sit block addr */ | |
118 | if (unlikely(blkno >= max_blks)) | |
119 | goto out; | |
120 | blk_addr = current_sit_addr(sbi, | |
121 | blkno * SIT_ENTRY_PER_BLOCK); | |
122 | if (blkno != start && prev_blk_addr + 1 != blk_addr) | |
123 | goto out; | |
124 | prev_blk_addr = blk_addr; | |
125 | break; | |
81c1a0f1 | 126 | case META_SSA: |
662befda | 127 | case META_CP: |
81c1a0f1 | 128 | /* get ssa/cp block addr */ |
662befda CY |
129 | blk_addr = blkno; |
130 | break; | |
131 | default: | |
132 | BUG(); | |
133 | } | |
134 | ||
135 | page = grab_cache_page(META_MAPPING(sbi), blk_addr); | |
136 | if (!page) | |
137 | continue; | |
138 | if (PageUptodate(page)) { | |
662befda CY |
139 | f2fs_put_page(page, 1); |
140 | continue; | |
141 | } | |
142 | ||
143 | f2fs_submit_page_mbio(sbi, page, blk_addr, &fio); | |
662befda CY |
144 | f2fs_put_page(page, 0); |
145 | } | |
146 | out: | |
147 | f2fs_submit_merged_bio(sbi, META, READ); | |
148 | return blkno - start; | |
149 | } | |
150 | ||
127e670a JK |
151 | static int f2fs_write_meta_page(struct page *page, |
152 | struct writeback_control *wbc) | |
153 | { | |
154 | struct inode *inode = page->mapping->host; | |
155 | struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); | |
127e670a | 156 | |
ecda0de3 CY |
157 | trace_f2fs_writepage(page, META); |
158 | ||
203681f6 | 159 | if (unlikely(sbi->por_doing)) |
cfb271d4 | 160 | goto redirty_out; |
cfb271d4 CY |
161 | if (wbc->for_reclaim) |
162 | goto redirty_out; | |
127e670a | 163 | |
203681f6 JK |
164 | /* Should not write any meta pages, if any IO error was occurred */ |
165 | if (unlikely(is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ERROR_FLAG))) | |
166 | goto no_write; | |
127e670a | 167 | |
3cb5ad15 | 168 | f2fs_wait_on_page_writeback(page, META); |
577e3495 | 169 | write_meta_page(sbi, page); |
203681f6 | 170 | no_write: |
577e3495 JK |
171 | dec_page_count(sbi, F2FS_DIRTY_META); |
172 | unlock_page(page); | |
173 | return 0; | |
cfb271d4 CY |
174 | |
175 | redirty_out: | |
76f60268 | 176 | redirty_page_for_writepage(wbc, page); |
cfb271d4 | 177 | return AOP_WRITEPAGE_ACTIVATE; |
127e670a JK |
178 | } |
179 | ||
180 | static int f2fs_write_meta_pages(struct address_space *mapping, | |
181 | struct writeback_control *wbc) | |
182 | { | |
183 | struct f2fs_sb_info *sbi = F2FS_SB(mapping->host->i_sb); | |
50c8cdb3 | 184 | long diff, written; |
127e670a | 185 | |
e5748434 CY |
186 | trace_f2fs_writepages(mapping->host, wbc, META); |
187 | ||
5459aa97 | 188 | /* collect a number of dirty meta pages and write together */ |
50c8cdb3 JK |
189 | if (wbc->for_kupdate || |
190 | get_pages(sbi, F2FS_DIRTY_META) < nr_pages_to_skip(sbi, META)) | |
d3baf95d | 191 | goto skip_write; |
127e670a JK |
192 | |
193 | /* if mounting is failed, skip writing node pages */ | |
194 | mutex_lock(&sbi->cp_mutex); | |
50c8cdb3 JK |
195 | diff = nr_pages_to_write(sbi, META, wbc); |
196 | written = sync_meta_pages(sbi, META, wbc->nr_to_write); | |
127e670a | 197 | mutex_unlock(&sbi->cp_mutex); |
50c8cdb3 | 198 | wbc->nr_to_write = max((long)0, wbc->nr_to_write - written - diff); |
127e670a | 199 | return 0; |
d3baf95d JK |
200 | |
201 | skip_write: | |
202 | wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_META); | |
203 | return 0; | |
127e670a JK |
204 | } |
205 | ||
206 | long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type, | |
207 | long nr_to_write) | |
208 | { | |
9df27d98 | 209 | struct address_space *mapping = META_MAPPING(sbi); |
127e670a JK |
210 | pgoff_t index = 0, end = LONG_MAX; |
211 | struct pagevec pvec; | |
212 | long nwritten = 0; | |
213 | struct writeback_control wbc = { | |
214 | .for_reclaim = 0, | |
215 | }; | |
216 | ||
217 | pagevec_init(&pvec, 0); | |
218 | ||
219 | while (index <= end) { | |
220 | int i, nr_pages; | |
221 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &index, | |
222 | PAGECACHE_TAG_DIRTY, | |
223 | min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); | |
cfb271d4 | 224 | if (unlikely(nr_pages == 0)) |
127e670a JK |
225 | break; |
226 | ||
227 | for (i = 0; i < nr_pages; i++) { | |
228 | struct page *page = pvec.pages[i]; | |
203681f6 | 229 | |
127e670a | 230 | lock_page(page); |
203681f6 JK |
231 | |
232 | if (unlikely(page->mapping != mapping)) { | |
233 | continue_unlock: | |
234 | unlock_page(page); | |
235 | continue; | |
236 | } | |
237 | if (!PageDirty(page)) { | |
238 | /* someone wrote it for us */ | |
239 | goto continue_unlock; | |
240 | } | |
241 | ||
242 | if (!clear_page_dirty_for_io(page)) | |
243 | goto continue_unlock; | |
244 | ||
577e3495 JK |
245 | if (f2fs_write_meta_page(page, &wbc)) { |
246 | unlock_page(page); | |
247 | break; | |
248 | } | |
cfb271d4 CY |
249 | nwritten++; |
250 | if (unlikely(nwritten >= nr_to_write)) | |
127e670a JK |
251 | break; |
252 | } | |
253 | pagevec_release(&pvec); | |
254 | cond_resched(); | |
255 | } | |
256 | ||
257 | if (nwritten) | |
458e6197 | 258 | f2fs_submit_merged_bio(sbi, type, WRITE); |
127e670a JK |
259 | |
260 | return nwritten; | |
261 | } | |
262 | ||
263 | static int f2fs_set_meta_page_dirty(struct page *page) | |
264 | { | |
265 | struct address_space *mapping = page->mapping; | |
266 | struct f2fs_sb_info *sbi = F2FS_SB(mapping->host->i_sb); | |
267 | ||
26c6b887 JK |
268 | trace_f2fs_set_page_dirty(page, META); |
269 | ||
127e670a JK |
270 | SetPageUptodate(page); |
271 | if (!PageDirty(page)) { | |
272 | __set_page_dirty_nobuffers(page); | |
273 | inc_page_count(sbi, F2FS_DIRTY_META); | |
127e670a JK |
274 | return 1; |
275 | } | |
276 | return 0; | |
277 | } | |
278 | ||
279 | const struct address_space_operations f2fs_meta_aops = { | |
280 | .writepage = f2fs_write_meta_page, | |
281 | .writepages = f2fs_write_meta_pages, | |
282 | .set_page_dirty = f2fs_set_meta_page_dirty, | |
283 | }; | |
284 | ||
6451e041 | 285 | static void __add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
953e6cc6 | 286 | { |
39efac41 JK |
287 | struct ino_entry *e; |
288 | retry: | |
6451e041 | 289 | spin_lock(&sbi->ino_lock[type]); |
39efac41 JK |
290 | |
291 | e = radix_tree_lookup(&sbi->ino_root[type], ino); | |
292 | if (!e) { | |
293 | e = kmem_cache_alloc(ino_entry_slab, GFP_ATOMIC); | |
294 | if (!e) { | |
6451e041 | 295 | spin_unlock(&sbi->ino_lock[type]); |
39efac41 | 296 | goto retry; |
953e6cc6 | 297 | } |
39efac41 JK |
298 | if (radix_tree_insert(&sbi->ino_root[type], ino, e)) { |
299 | spin_unlock(&sbi->ino_lock[type]); | |
300 | kmem_cache_free(ino_entry_slab, e); | |
301 | goto retry; | |
302 | } | |
303 | memset(e, 0, sizeof(struct ino_entry)); | |
304 | e->ino = ino; | |
953e6cc6 | 305 | |
39efac41 JK |
306 | list_add_tail(&e->list, &sbi->ino_list[type]); |
307 | } | |
6451e041 | 308 | spin_unlock(&sbi->ino_lock[type]); |
953e6cc6 JK |
309 | } |
310 | ||
6451e041 | 311 | static void __remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
953e6cc6 | 312 | { |
6451e041 | 313 | struct ino_entry *e; |
953e6cc6 | 314 | |
6451e041 | 315 | spin_lock(&sbi->ino_lock[type]); |
39efac41 JK |
316 | e = radix_tree_lookup(&sbi->ino_root[type], ino); |
317 | if (e) { | |
318 | list_del(&e->list); | |
319 | radix_tree_delete(&sbi->ino_root[type], ino); | |
320 | if (type == ORPHAN_INO) | |
953e6cc6 | 321 | sbi->n_orphans--; |
39efac41 JK |
322 | spin_unlock(&sbi->ino_lock[type]); |
323 | kmem_cache_free(ino_entry_slab, e); | |
324 | return; | |
953e6cc6 | 325 | } |
6451e041 | 326 | spin_unlock(&sbi->ino_lock[type]); |
953e6cc6 JK |
327 | } |
328 | ||
fff04f90 JK |
329 | void add_dirty_inode(struct f2fs_sb_info *sbi, nid_t ino, int type) |
330 | { | |
331 | /* add new dirty ino entry into list */ | |
332 | __add_ino_entry(sbi, ino, type); | |
333 | } | |
334 | ||
335 | void remove_dirty_inode(struct f2fs_sb_info *sbi, nid_t ino, int type) | |
336 | { | |
337 | /* remove dirty ino entry from list */ | |
338 | __remove_ino_entry(sbi, ino, type); | |
339 | } | |
340 | ||
341 | /* mode should be APPEND_INO or UPDATE_INO */ | |
342 | bool exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode) | |
343 | { | |
344 | struct ino_entry *e; | |
345 | spin_lock(&sbi->ino_lock[mode]); | |
346 | e = radix_tree_lookup(&sbi->ino_root[mode], ino); | |
347 | spin_unlock(&sbi->ino_lock[mode]); | |
348 | return e ? true : false; | |
349 | } | |
350 | ||
351 | static void release_dirty_inode(struct f2fs_sb_info *sbi) | |
352 | { | |
353 | struct ino_entry *e, *tmp; | |
354 | int i; | |
355 | ||
356 | for (i = APPEND_INO; i <= UPDATE_INO; i++) { | |
357 | spin_lock(&sbi->ino_lock[i]); | |
358 | list_for_each_entry_safe(e, tmp, &sbi->ino_list[i], list) { | |
359 | list_del(&e->list); | |
360 | radix_tree_delete(&sbi->ino_root[i], e->ino); | |
361 | kmem_cache_free(ino_entry_slab, e); | |
362 | } | |
363 | spin_unlock(&sbi->ino_lock[i]); | |
364 | } | |
365 | } | |
366 | ||
cbd56e7d | 367 | int acquire_orphan_inode(struct f2fs_sb_info *sbi) |
127e670a | 368 | { |
127e670a JK |
369 | int err = 0; |
370 | ||
6451e041 | 371 | spin_lock(&sbi->ino_lock[ORPHAN_INO]); |
0d47c1ad | 372 | if (unlikely(sbi->n_orphans >= sbi->max_orphans)) |
127e670a | 373 | err = -ENOSPC; |
cbd56e7d JK |
374 | else |
375 | sbi->n_orphans++; | |
6451e041 | 376 | spin_unlock(&sbi->ino_lock[ORPHAN_INO]); |
0d47c1ad | 377 | |
127e670a JK |
378 | return err; |
379 | } | |
380 | ||
cbd56e7d JK |
381 | void release_orphan_inode(struct f2fs_sb_info *sbi) |
382 | { | |
6451e041 | 383 | spin_lock(&sbi->ino_lock[ORPHAN_INO]); |
5d56b671 | 384 | f2fs_bug_on(sbi->n_orphans == 0); |
cbd56e7d | 385 | sbi->n_orphans--; |
6451e041 | 386 | spin_unlock(&sbi->ino_lock[ORPHAN_INO]); |
cbd56e7d JK |
387 | } |
388 | ||
127e670a JK |
389 | void add_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) |
390 | { | |
39efac41 | 391 | /* add new orphan ino entry into list */ |
6451e041 | 392 | __add_ino_entry(sbi, ino, ORPHAN_INO); |
127e670a JK |
393 | } |
394 | ||
395 | void remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) | |
396 | { | |
953e6cc6 | 397 | /* remove orphan entry from orphan list */ |
6451e041 | 398 | __remove_ino_entry(sbi, ino, ORPHAN_INO); |
127e670a JK |
399 | } |
400 | ||
401 | static void recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) | |
402 | { | |
403 | struct inode *inode = f2fs_iget(sbi->sb, ino); | |
5d56b671 | 404 | f2fs_bug_on(IS_ERR(inode)); |
127e670a JK |
405 | clear_nlink(inode); |
406 | ||
407 | /* truncate all the data during iput */ | |
408 | iput(inode); | |
409 | } | |
410 | ||
8f99a946 | 411 | void recover_orphan_inodes(struct f2fs_sb_info *sbi) |
127e670a JK |
412 | { |
413 | block_t start_blk, orphan_blkaddr, i, j; | |
414 | ||
25ca923b | 415 | if (!is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG)) |
8f99a946 | 416 | return; |
127e670a | 417 | |
aabe5136 | 418 | sbi->por_doing = true; |
1dbe4152 CL |
419 | |
420 | start_blk = __start_cp_addr(sbi) + 1 + | |
421 | le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); | |
127e670a JK |
422 | orphan_blkaddr = __start_sum_addr(sbi) - 1; |
423 | ||
662befda CY |
424 | ra_meta_pages(sbi, start_blk, orphan_blkaddr, META_CP); |
425 | ||
127e670a JK |
426 | for (i = 0; i < orphan_blkaddr; i++) { |
427 | struct page *page = get_meta_page(sbi, start_blk + i); | |
428 | struct f2fs_orphan_block *orphan_blk; | |
429 | ||
430 | orphan_blk = (struct f2fs_orphan_block *)page_address(page); | |
431 | for (j = 0; j < le32_to_cpu(orphan_blk->entry_count); j++) { | |
432 | nid_t ino = le32_to_cpu(orphan_blk->ino[j]); | |
433 | recover_orphan_inode(sbi, ino); | |
434 | } | |
435 | f2fs_put_page(page, 1); | |
436 | } | |
437 | /* clear Orphan Flag */ | |
25ca923b | 438 | clear_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG); |
aabe5136 | 439 | sbi->por_doing = false; |
8f99a946 | 440 | return; |
127e670a JK |
441 | } |
442 | ||
443 | static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk) | |
444 | { | |
502c6e0b | 445 | struct list_head *head; |
127e670a | 446 | struct f2fs_orphan_block *orphan_blk = NULL; |
127e670a | 447 | unsigned int nentries = 0; |
4531929e GZ |
448 | unsigned short index; |
449 | unsigned short orphan_blocks = (unsigned short)((sbi->n_orphans + | |
450 | (F2FS_ORPHANS_PER_BLOCK - 1)) / F2FS_ORPHANS_PER_BLOCK); | |
451 | struct page *page = NULL; | |
6451e041 | 452 | struct ino_entry *orphan = NULL; |
127e670a | 453 | |
4531929e | 454 | for (index = 0; index < orphan_blocks; index++) |
63f5384c | 455 | grab_meta_page(sbi, start_blk + index); |
127e670a | 456 | |
4531929e | 457 | index = 1; |
6451e041 JK |
458 | spin_lock(&sbi->ino_lock[ORPHAN_INO]); |
459 | head = &sbi->ino_list[ORPHAN_INO]; | |
127e670a JK |
460 | |
461 | /* loop for each orphan inode entry and write them in Jornal block */ | |
502c6e0b GZ |
462 | list_for_each_entry(orphan, head, list) { |
463 | if (!page) { | |
63f5384c GZ |
464 | page = find_get_page(META_MAPPING(sbi), start_blk++); |
465 | f2fs_bug_on(!page); | |
502c6e0b GZ |
466 | orphan_blk = |
467 | (struct f2fs_orphan_block *)page_address(page); | |
468 | memset(orphan_blk, 0, sizeof(*orphan_blk)); | |
63f5384c | 469 | f2fs_put_page(page, 0); |
502c6e0b | 470 | } |
127e670a | 471 | |
36795567 | 472 | orphan_blk->ino[nentries++] = cpu_to_le32(orphan->ino); |
127e670a | 473 | |
36795567 | 474 | if (nentries == F2FS_ORPHANS_PER_BLOCK) { |
127e670a JK |
475 | /* |
476 | * an orphan block is full of 1020 entries, | |
477 | * then we need to flush current orphan blocks | |
478 | * and bring another one in memory | |
479 | */ | |
480 | orphan_blk->blk_addr = cpu_to_le16(index); | |
481 | orphan_blk->blk_count = cpu_to_le16(orphan_blocks); | |
482 | orphan_blk->entry_count = cpu_to_le32(nentries); | |
483 | set_page_dirty(page); | |
484 | f2fs_put_page(page, 1); | |
485 | index++; | |
127e670a JK |
486 | nentries = 0; |
487 | page = NULL; | |
488 | } | |
502c6e0b | 489 | } |
127e670a | 490 | |
502c6e0b GZ |
491 | if (page) { |
492 | orphan_blk->blk_addr = cpu_to_le16(index); | |
493 | orphan_blk->blk_count = cpu_to_le16(orphan_blocks); | |
494 | orphan_blk->entry_count = cpu_to_le32(nentries); | |
495 | set_page_dirty(page); | |
496 | f2fs_put_page(page, 1); | |
127e670a | 497 | } |
502c6e0b | 498 | |
6451e041 | 499 | spin_unlock(&sbi->ino_lock[ORPHAN_INO]); |
127e670a JK |
500 | } |
501 | ||
502 | static struct page *validate_checkpoint(struct f2fs_sb_info *sbi, | |
503 | block_t cp_addr, unsigned long long *version) | |
504 | { | |
505 | struct page *cp_page_1, *cp_page_2 = NULL; | |
506 | unsigned long blk_size = sbi->blocksize; | |
507 | struct f2fs_checkpoint *cp_block; | |
508 | unsigned long long cur_version = 0, pre_version = 0; | |
127e670a | 509 | size_t crc_offset; |
7e586fa0 | 510 | __u32 crc = 0; |
127e670a JK |
511 | |
512 | /* Read the 1st cp block in this CP pack */ | |
513 | cp_page_1 = get_meta_page(sbi, cp_addr); | |
514 | ||
515 | /* get the version number */ | |
516 | cp_block = (struct f2fs_checkpoint *)page_address(cp_page_1); | |
517 | crc_offset = le32_to_cpu(cp_block->checksum_offset); | |
518 | if (crc_offset >= blk_size) | |
519 | goto invalid_cp1; | |
520 | ||
7e586fa0 | 521 | crc = le32_to_cpu(*((__u32 *)((unsigned char *)cp_block + crc_offset))); |
127e670a JK |
522 | if (!f2fs_crc_valid(crc, cp_block, crc_offset)) |
523 | goto invalid_cp1; | |
524 | ||
d71b5564 | 525 | pre_version = cur_cp_version(cp_block); |
127e670a JK |
526 | |
527 | /* Read the 2nd cp block in this CP pack */ | |
25ca923b | 528 | cp_addr += le32_to_cpu(cp_block->cp_pack_total_block_count) - 1; |
127e670a JK |
529 | cp_page_2 = get_meta_page(sbi, cp_addr); |
530 | ||
531 | cp_block = (struct f2fs_checkpoint *)page_address(cp_page_2); | |
532 | crc_offset = le32_to_cpu(cp_block->checksum_offset); | |
533 | if (crc_offset >= blk_size) | |
534 | goto invalid_cp2; | |
535 | ||
7e586fa0 | 536 | crc = le32_to_cpu(*((__u32 *)((unsigned char *)cp_block + crc_offset))); |
127e670a JK |
537 | if (!f2fs_crc_valid(crc, cp_block, crc_offset)) |
538 | goto invalid_cp2; | |
539 | ||
d71b5564 | 540 | cur_version = cur_cp_version(cp_block); |
127e670a JK |
541 | |
542 | if (cur_version == pre_version) { | |
543 | *version = cur_version; | |
544 | f2fs_put_page(cp_page_2, 1); | |
545 | return cp_page_1; | |
546 | } | |
547 | invalid_cp2: | |
548 | f2fs_put_page(cp_page_2, 1); | |
549 | invalid_cp1: | |
550 | f2fs_put_page(cp_page_1, 1); | |
551 | return NULL; | |
552 | } | |
553 | ||
554 | int get_valid_checkpoint(struct f2fs_sb_info *sbi) | |
555 | { | |
556 | struct f2fs_checkpoint *cp_block; | |
557 | struct f2fs_super_block *fsb = sbi->raw_super; | |
558 | struct page *cp1, *cp2, *cur_page; | |
559 | unsigned long blk_size = sbi->blocksize; | |
560 | unsigned long long cp1_version = 0, cp2_version = 0; | |
561 | unsigned long long cp_start_blk_no; | |
1dbe4152 CL |
562 | unsigned int cp_blks = 1 + le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); |
563 | block_t cp_blk_no; | |
564 | int i; | |
127e670a | 565 | |
1dbe4152 | 566 | sbi->ckpt = kzalloc(cp_blks * blk_size, GFP_KERNEL); |
127e670a JK |
567 | if (!sbi->ckpt) |
568 | return -ENOMEM; | |
569 | /* | |
570 | * Finding out valid cp block involves read both | |
571 | * sets( cp pack1 and cp pack 2) | |
572 | */ | |
573 | cp_start_blk_no = le32_to_cpu(fsb->cp_blkaddr); | |
574 | cp1 = validate_checkpoint(sbi, cp_start_blk_no, &cp1_version); | |
575 | ||
576 | /* The second checkpoint pack should start at the next segment */ | |
f9a4e6df JK |
577 | cp_start_blk_no += ((unsigned long long)1) << |
578 | le32_to_cpu(fsb->log_blocks_per_seg); | |
127e670a JK |
579 | cp2 = validate_checkpoint(sbi, cp_start_blk_no, &cp2_version); |
580 | ||
581 | if (cp1 && cp2) { | |
582 | if (ver_after(cp2_version, cp1_version)) | |
583 | cur_page = cp2; | |
584 | else | |
585 | cur_page = cp1; | |
586 | } else if (cp1) { | |
587 | cur_page = cp1; | |
588 | } else if (cp2) { | |
589 | cur_page = cp2; | |
590 | } else { | |
591 | goto fail_no_cp; | |
592 | } | |
593 | ||
594 | cp_block = (struct f2fs_checkpoint *)page_address(cur_page); | |
595 | memcpy(sbi->ckpt, cp_block, blk_size); | |
596 | ||
1dbe4152 CL |
597 | if (cp_blks <= 1) |
598 | goto done; | |
599 | ||
600 | cp_blk_no = le32_to_cpu(fsb->cp_blkaddr); | |
601 | if (cur_page == cp2) | |
602 | cp_blk_no += 1 << le32_to_cpu(fsb->log_blocks_per_seg); | |
603 | ||
604 | for (i = 1; i < cp_blks; i++) { | |
605 | void *sit_bitmap_ptr; | |
606 | unsigned char *ckpt = (unsigned char *)sbi->ckpt; | |
607 | ||
608 | cur_page = get_meta_page(sbi, cp_blk_no + i); | |
609 | sit_bitmap_ptr = page_address(cur_page); | |
610 | memcpy(ckpt + i * blk_size, sit_bitmap_ptr, blk_size); | |
611 | f2fs_put_page(cur_page, 1); | |
612 | } | |
613 | done: | |
127e670a JK |
614 | f2fs_put_page(cp1, 1); |
615 | f2fs_put_page(cp2, 1); | |
616 | return 0; | |
617 | ||
618 | fail_no_cp: | |
619 | kfree(sbi->ckpt); | |
620 | return -EINVAL; | |
621 | } | |
622 | ||
5deb8267 | 623 | static int __add_dirty_inode(struct inode *inode, struct dir_inode_entry *new) |
127e670a JK |
624 | { |
625 | struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); | |
127e670a | 626 | |
ed57c27f JK |
627 | if (is_inode_flag_set(F2FS_I(inode), FI_DIRTY_DIR)) |
628 | return -EEXIST; | |
2d7b822a | 629 | |
ed57c27f JK |
630 | set_inode_flag(F2FS_I(inode), FI_DIRTY_DIR); |
631 | F2FS_I(inode)->dirty_dir = new; | |
632 | list_add_tail(&new->list, &sbi->dir_inode_list); | |
dcdfff65 | 633 | stat_inc_dirty_dir(sbi); |
5deb8267 JK |
634 | return 0; |
635 | } | |
636 | ||
637 | void set_dirty_dir_page(struct inode *inode, struct page *page) | |
638 | { | |
639 | struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); | |
640 | struct dir_inode_entry *new; | |
cf0ee0f0 | 641 | int ret = 0; |
5deb8267 | 642 | |
127e670a JK |
643 | if (!S_ISDIR(inode->i_mode)) |
644 | return; | |
7bd59381 GZ |
645 | |
646 | new = f2fs_kmem_cache_alloc(inode_entry_slab, GFP_NOFS); | |
127e670a JK |
647 | new->inode = inode; |
648 | INIT_LIST_HEAD(&new->list); | |
649 | ||
650 | spin_lock(&sbi->dir_inode_lock); | |
cf0ee0f0 | 651 | ret = __add_dirty_inode(inode, new); |
127e670a JK |
652 | inode_inc_dirty_dents(inode); |
653 | SetPagePrivate(page); | |
5deb8267 | 654 | spin_unlock(&sbi->dir_inode_lock); |
cf0ee0f0 CY |
655 | |
656 | if (ret) | |
657 | kmem_cache_free(inode_entry_slab, new); | |
5deb8267 JK |
658 | } |
659 | ||
660 | void add_dirty_dir_inode(struct inode *inode) | |
661 | { | |
662 | struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); | |
7bd59381 GZ |
663 | struct dir_inode_entry *new = |
664 | f2fs_kmem_cache_alloc(inode_entry_slab, GFP_NOFS); | |
cf0ee0f0 | 665 | int ret = 0; |
7bd59381 | 666 | |
5deb8267 JK |
667 | new->inode = inode; |
668 | INIT_LIST_HEAD(&new->list); | |
127e670a | 669 | |
5deb8267 | 670 | spin_lock(&sbi->dir_inode_lock); |
cf0ee0f0 | 671 | ret = __add_dirty_inode(inode, new); |
127e670a | 672 | spin_unlock(&sbi->dir_inode_lock); |
cf0ee0f0 CY |
673 | |
674 | if (ret) | |
675 | kmem_cache_free(inode_entry_slab, new); | |
127e670a JK |
676 | } |
677 | ||
678 | void remove_dirty_dir_inode(struct inode *inode) | |
679 | { | |
680 | struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); | |
2d7b822a | 681 | struct dir_inode_entry *entry; |
127e670a JK |
682 | |
683 | if (!S_ISDIR(inode->i_mode)) | |
684 | return; | |
685 | ||
686 | spin_lock(&sbi->dir_inode_lock); | |
ed57c27f JK |
687 | if (get_dirty_dents(inode) || |
688 | !is_inode_flag_set(F2FS_I(inode), FI_DIRTY_DIR)) { | |
3b10b1fd JK |
689 | spin_unlock(&sbi->dir_inode_lock); |
690 | return; | |
691 | } | |
127e670a | 692 | |
ed57c27f JK |
693 | entry = F2FS_I(inode)->dirty_dir; |
694 | list_del(&entry->list); | |
695 | F2FS_I(inode)->dirty_dir = NULL; | |
696 | clear_inode_flag(F2FS_I(inode), FI_DIRTY_DIR); | |
697 | stat_dec_dirty_dir(sbi); | |
127e670a | 698 | spin_unlock(&sbi->dir_inode_lock); |
ed57c27f | 699 | kmem_cache_free(inode_entry_slab, entry); |
74d0b917 JK |
700 | |
701 | /* Only from the recovery routine */ | |
afc3eda2 JK |
702 | if (is_inode_flag_set(F2FS_I(inode), FI_DELAY_IPUT)) { |
703 | clear_inode_flag(F2FS_I(inode), FI_DELAY_IPUT); | |
74d0b917 | 704 | iput(inode); |
afc3eda2 | 705 | } |
74d0b917 JK |
706 | } |
707 | ||
127e670a JK |
708 | void sync_dirty_dir_inodes(struct f2fs_sb_info *sbi) |
709 | { | |
ce3b7d80 | 710 | struct list_head *head; |
127e670a JK |
711 | struct dir_inode_entry *entry; |
712 | struct inode *inode; | |
713 | retry: | |
714 | spin_lock(&sbi->dir_inode_lock); | |
ce3b7d80 GZ |
715 | |
716 | head = &sbi->dir_inode_list; | |
127e670a JK |
717 | if (list_empty(head)) { |
718 | spin_unlock(&sbi->dir_inode_lock); | |
719 | return; | |
720 | } | |
721 | entry = list_entry(head->next, struct dir_inode_entry, list); | |
722 | inode = igrab(entry->inode); | |
723 | spin_unlock(&sbi->dir_inode_lock); | |
724 | if (inode) { | |
87d6f890 | 725 | filemap_fdatawrite(inode->i_mapping); |
127e670a JK |
726 | iput(inode); |
727 | } else { | |
728 | /* | |
729 | * We should submit bio, since it exists several | |
730 | * wribacking dentry pages in the freeing inode. | |
731 | */ | |
458e6197 | 732 | f2fs_submit_merged_bio(sbi, DATA, WRITE); |
127e670a JK |
733 | } |
734 | goto retry; | |
735 | } | |
736 | ||
0a8165d7 | 737 | /* |
127e670a JK |
738 | * Freeze all the FS-operations for checkpoint. |
739 | */ | |
43727527 | 740 | static void block_operations(struct f2fs_sb_info *sbi) |
127e670a | 741 | { |
127e670a JK |
742 | struct writeback_control wbc = { |
743 | .sync_mode = WB_SYNC_ALL, | |
744 | .nr_to_write = LONG_MAX, | |
745 | .for_reclaim = 0, | |
746 | }; | |
c718379b JK |
747 | struct blk_plug plug; |
748 | ||
749 | blk_start_plug(&plug); | |
750 | ||
39936837 | 751 | retry_flush_dents: |
e479556b | 752 | f2fs_lock_all(sbi); |
127e670a | 753 | /* write all the dirty dentry pages */ |
127e670a | 754 | if (get_pages(sbi, F2FS_DIRTY_DENTS)) { |
e479556b | 755 | f2fs_unlock_all(sbi); |
39936837 JK |
756 | sync_dirty_dir_inodes(sbi); |
757 | goto retry_flush_dents; | |
127e670a JK |
758 | } |
759 | ||
127e670a | 760 | /* |
e1c42045 | 761 | * POR: we should ensure that there are no dirty node pages |
127e670a JK |
762 | * until finishing nat/sit flush. |
763 | */ | |
39936837 | 764 | retry_flush_nodes: |
b3582c68 | 765 | down_write(&sbi->node_write); |
127e670a JK |
766 | |
767 | if (get_pages(sbi, F2FS_DIRTY_NODES)) { | |
b3582c68 | 768 | up_write(&sbi->node_write); |
39936837 JK |
769 | sync_node_pages(sbi, 0, &wbc); |
770 | goto retry_flush_nodes; | |
127e670a | 771 | } |
c718379b | 772 | blk_finish_plug(&plug); |
127e670a JK |
773 | } |
774 | ||
775 | static void unblock_operations(struct f2fs_sb_info *sbi) | |
776 | { | |
b3582c68 | 777 | up_write(&sbi->node_write); |
e479556b | 778 | f2fs_unlock_all(sbi); |
127e670a JK |
779 | } |
780 | ||
fb51b5ef CL |
781 | static void wait_on_all_pages_writeback(struct f2fs_sb_info *sbi) |
782 | { | |
783 | DEFINE_WAIT(wait); | |
784 | ||
785 | for (;;) { | |
786 | prepare_to_wait(&sbi->cp_wait, &wait, TASK_UNINTERRUPTIBLE); | |
787 | ||
788 | if (!get_pages(sbi, F2FS_WRITEBACK)) | |
789 | break; | |
790 | ||
791 | io_schedule(); | |
792 | } | |
793 | finish_wait(&sbi->cp_wait, &wait); | |
794 | } | |
795 | ||
127e670a JK |
796 | static void do_checkpoint(struct f2fs_sb_info *sbi, bool is_umount) |
797 | { | |
798 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
cf2271e7 | 799 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_WARM_NODE); |
127e670a JK |
800 | nid_t last_nid = 0; |
801 | block_t start_blk; | |
802 | struct page *cp_page; | |
803 | unsigned int data_sum_blocks, orphan_blocks; | |
7e586fa0 | 804 | __u32 crc32 = 0; |
127e670a | 805 | void *kaddr; |
127e670a | 806 | int i; |
1dbe4152 | 807 | int cp_payload_blks = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); |
127e670a | 808 | |
1e87a78d JK |
809 | /* |
810 | * This avoids to conduct wrong roll-forward operations and uses | |
811 | * metapages, so should be called prior to sync_meta_pages below. | |
812 | */ | |
cf2271e7 | 813 | discard_next_dnode(sbi, NEXT_FREE_BLKADDR(sbi, curseg)); |
127e670a JK |
814 | |
815 | /* Flush all the NAT/SIT pages */ | |
816 | while (get_pages(sbi, F2FS_DIRTY_META)) | |
817 | sync_meta_pages(sbi, META, LONG_MAX); | |
818 | ||
819 | next_free_nid(sbi, &last_nid); | |
820 | ||
821 | /* | |
822 | * modify checkpoint | |
823 | * version number is already updated | |
824 | */ | |
825 | ckpt->elapsed_time = cpu_to_le64(get_mtime(sbi)); | |
826 | ckpt->valid_block_count = cpu_to_le64(valid_user_blocks(sbi)); | |
827 | ckpt->free_segment_count = cpu_to_le32(free_segments(sbi)); | |
828 | for (i = 0; i < 3; i++) { | |
829 | ckpt->cur_node_segno[i] = | |
830 | cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_NODE)); | |
831 | ckpt->cur_node_blkoff[i] = | |
832 | cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_NODE)); | |
833 | ckpt->alloc_type[i + CURSEG_HOT_NODE] = | |
834 | curseg_alloc_type(sbi, i + CURSEG_HOT_NODE); | |
835 | } | |
836 | for (i = 0; i < 3; i++) { | |
837 | ckpt->cur_data_segno[i] = | |
838 | cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_DATA)); | |
839 | ckpt->cur_data_blkoff[i] = | |
840 | cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_DATA)); | |
841 | ckpt->alloc_type[i + CURSEG_HOT_DATA] = | |
842 | curseg_alloc_type(sbi, i + CURSEG_HOT_DATA); | |
843 | } | |
844 | ||
845 | ckpt->valid_node_count = cpu_to_le32(valid_node_count(sbi)); | |
846 | ckpt->valid_inode_count = cpu_to_le32(valid_inode_count(sbi)); | |
847 | ckpt->next_free_nid = cpu_to_le32(last_nid); | |
848 | ||
849 | /* 2 cp + n data seg summary + orphan inode blocks */ | |
850 | data_sum_blocks = npages_for_summary_flush(sbi); | |
851 | if (data_sum_blocks < 3) | |
25ca923b | 852 | set_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); |
127e670a | 853 | else |
25ca923b | 854 | clear_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); |
127e670a JK |
855 | |
856 | orphan_blocks = (sbi->n_orphans + F2FS_ORPHANS_PER_BLOCK - 1) | |
857 | / F2FS_ORPHANS_PER_BLOCK; | |
1dbe4152 CL |
858 | ckpt->cp_pack_start_sum = cpu_to_le32(1 + cp_payload_blks + |
859 | orphan_blocks); | |
127e670a JK |
860 | |
861 | if (is_umount) { | |
25ca923b JK |
862 | set_ckpt_flags(ckpt, CP_UMOUNT_FLAG); |
863 | ckpt->cp_pack_total_block_count = cpu_to_le32(2 + | |
1dbe4152 CL |
864 | cp_payload_blks + data_sum_blocks + |
865 | orphan_blocks + NR_CURSEG_NODE_TYPE); | |
127e670a | 866 | } else { |
25ca923b JK |
867 | clear_ckpt_flags(ckpt, CP_UMOUNT_FLAG); |
868 | ckpt->cp_pack_total_block_count = cpu_to_le32(2 + | |
1dbe4152 CL |
869 | cp_payload_blks + data_sum_blocks + |
870 | orphan_blocks); | |
127e670a JK |
871 | } |
872 | ||
873 | if (sbi->n_orphans) | |
25ca923b | 874 | set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); |
127e670a | 875 | else |
25ca923b | 876 | clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); |
127e670a JK |
877 | |
878 | /* update SIT/NAT bitmap */ | |
879 | get_sit_bitmap(sbi, __bitmap_ptr(sbi, SIT_BITMAP)); | |
880 | get_nat_bitmap(sbi, __bitmap_ptr(sbi, NAT_BITMAP)); | |
881 | ||
882 | crc32 = f2fs_crc32(ckpt, le32_to_cpu(ckpt->checksum_offset)); | |
7e586fa0 JK |
883 | *((__le32 *)((unsigned char *)ckpt + |
884 | le32_to_cpu(ckpt->checksum_offset))) | |
127e670a JK |
885 | = cpu_to_le32(crc32); |
886 | ||
887 | start_blk = __start_cp_addr(sbi); | |
888 | ||
889 | /* write out checkpoint buffer at block 0 */ | |
890 | cp_page = grab_meta_page(sbi, start_blk++); | |
891 | kaddr = page_address(cp_page); | |
892 | memcpy(kaddr, ckpt, (1 << sbi->log_blocksize)); | |
893 | set_page_dirty(cp_page); | |
894 | f2fs_put_page(cp_page, 1); | |
895 | ||
1dbe4152 CL |
896 | for (i = 1; i < 1 + cp_payload_blks; i++) { |
897 | cp_page = grab_meta_page(sbi, start_blk++); | |
898 | kaddr = page_address(cp_page); | |
899 | memcpy(kaddr, (char *)ckpt + i * F2FS_BLKSIZE, | |
900 | (1 << sbi->log_blocksize)); | |
901 | set_page_dirty(cp_page); | |
902 | f2fs_put_page(cp_page, 1); | |
903 | } | |
904 | ||
127e670a JK |
905 | if (sbi->n_orphans) { |
906 | write_orphan_inodes(sbi, start_blk); | |
907 | start_blk += orphan_blocks; | |
908 | } | |
909 | ||
910 | write_data_summaries(sbi, start_blk); | |
911 | start_blk += data_sum_blocks; | |
912 | if (is_umount) { | |
913 | write_node_summaries(sbi, start_blk); | |
914 | start_blk += NR_CURSEG_NODE_TYPE; | |
915 | } | |
916 | ||
917 | /* writeout checkpoint block */ | |
918 | cp_page = grab_meta_page(sbi, start_blk); | |
919 | kaddr = page_address(cp_page); | |
920 | memcpy(kaddr, ckpt, (1 << sbi->log_blocksize)); | |
921 | set_page_dirty(cp_page); | |
922 | f2fs_put_page(cp_page, 1); | |
923 | ||
924 | /* wait for previous submitted node/meta pages writeback */ | |
fb51b5ef | 925 | wait_on_all_pages_writeback(sbi); |
127e670a | 926 | |
4ef51a8f | 927 | filemap_fdatawait_range(NODE_MAPPING(sbi), 0, LONG_MAX); |
9df27d98 | 928 | filemap_fdatawait_range(META_MAPPING(sbi), 0, LONG_MAX); |
127e670a JK |
929 | |
930 | /* update user_block_counts */ | |
931 | sbi->last_valid_block_count = sbi->total_valid_block_count; | |
932 | sbi->alloc_valid_block_count = 0; | |
933 | ||
934 | /* Here, we only have one bio having CP pack */ | |
577e3495 | 935 | sync_meta_pages(sbi, META_FLUSH, LONG_MAX); |
127e670a | 936 | |
01229f5e | 937 | if (!is_set_ckpt_flags(ckpt, CP_ERROR_FLAG)) { |
577e3495 | 938 | clear_prefree_segments(sbi); |
fff04f90 | 939 | release_dirty_inode(sbi); |
577e3495 JK |
940 | F2FS_RESET_SB_DIRT(sbi); |
941 | } | |
127e670a JK |
942 | } |
943 | ||
0a8165d7 | 944 | /* |
e1c42045 | 945 | * We guarantee that this checkpoint procedure will not fail. |
127e670a | 946 | */ |
43727527 | 947 | void write_checkpoint(struct f2fs_sb_info *sbi, bool is_umount) |
127e670a JK |
948 | { |
949 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
950 | unsigned long long ckpt_ver; | |
951 | ||
2af4bd6c NJ |
952 | trace_f2fs_write_checkpoint(sbi->sb, is_umount, "start block_ops"); |
953 | ||
43727527 JK |
954 | mutex_lock(&sbi->cp_mutex); |
955 | block_operations(sbi); | |
127e670a | 956 | |
2af4bd6c NJ |
957 | trace_f2fs_write_checkpoint(sbi->sb, is_umount, "finish block_ops"); |
958 | ||
458e6197 JK |
959 | f2fs_submit_merged_bio(sbi, DATA, WRITE); |
960 | f2fs_submit_merged_bio(sbi, NODE, WRITE); | |
961 | f2fs_submit_merged_bio(sbi, META, WRITE); | |
127e670a JK |
962 | |
963 | /* | |
964 | * update checkpoint pack index | |
965 | * Increase the version number so that | |
966 | * SIT entries and seg summaries are written at correct place | |
967 | */ | |
d71b5564 | 968 | ckpt_ver = cur_cp_version(ckpt); |
127e670a JK |
969 | ckpt->checkpoint_ver = cpu_to_le64(++ckpt_ver); |
970 | ||
971 | /* write cached NAT/SIT entries to NAT/SIT area */ | |
972 | flush_nat_entries(sbi); | |
973 | flush_sit_entries(sbi); | |
974 | ||
127e670a JK |
975 | /* unlock all the fs_lock[] in do_checkpoint() */ |
976 | do_checkpoint(sbi, is_umount); | |
977 | ||
978 | unblock_operations(sbi); | |
979 | mutex_unlock(&sbi->cp_mutex); | |
2af4bd6c | 980 | |
942e0be6 | 981 | stat_inc_cp_count(sbi->stat_info); |
2af4bd6c | 982 | trace_f2fs_write_checkpoint(sbi->sb, is_umount, "finish checkpoint"); |
127e670a JK |
983 | } |
984 | ||
6451e041 | 985 | void init_ino_entry_info(struct f2fs_sb_info *sbi) |
127e670a | 986 | { |
6451e041 JK |
987 | int i; |
988 | ||
989 | for (i = 0; i < MAX_INO_ENTRY; i++) { | |
39efac41 | 990 | INIT_RADIX_TREE(&sbi->ino_root[i], GFP_ATOMIC); |
6451e041 JK |
991 | spin_lock_init(&sbi->ino_lock[i]); |
992 | INIT_LIST_HEAD(&sbi->ino_list[i]); | |
993 | } | |
994 | ||
0d47c1ad GZ |
995 | /* |
996 | * considering 512 blocks in a segment 8 blocks are needed for cp | |
997 | * and log segment summaries. Remaining blocks are used to keep | |
998 | * orphan entries with the limitation one reserved segment | |
999 | * for cp pack we can have max 1020*504 orphan entries | |
1000 | */ | |
6451e041 | 1001 | sbi->n_orphans = 0; |
0d47c1ad GZ |
1002 | sbi->max_orphans = (sbi->blocks_per_seg - 2 - NR_CURSEG_TYPE) |
1003 | * F2FS_ORPHANS_PER_BLOCK; | |
127e670a JK |
1004 | } |
1005 | ||
6e6093a8 | 1006 | int __init create_checkpoint_caches(void) |
127e670a | 1007 | { |
6451e041 JK |
1008 | ino_entry_slab = f2fs_kmem_cache_create("f2fs_ino_entry", |
1009 | sizeof(struct ino_entry)); | |
1010 | if (!ino_entry_slab) | |
127e670a JK |
1011 | return -ENOMEM; |
1012 | inode_entry_slab = f2fs_kmem_cache_create("f2fs_dirty_dir_entry", | |
e8512d2e | 1013 | sizeof(struct dir_inode_entry)); |
6bacf52f | 1014 | if (!inode_entry_slab) { |
6451e041 | 1015 | kmem_cache_destroy(ino_entry_slab); |
127e670a JK |
1016 | return -ENOMEM; |
1017 | } | |
1018 | return 0; | |
1019 | } | |
1020 | ||
1021 | void destroy_checkpoint_caches(void) | |
1022 | { | |
6451e041 | 1023 | kmem_cache_destroy(ino_entry_slab); |
127e670a JK |
1024 | kmem_cache_destroy(inode_entry_slab); |
1025 | } |