Commit | Line | Data |
---|---|---|
0a8165d7 | 1 | /* |
d624c96f JK |
2 | * fs/f2fs/recovery.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/f2fs_fs.h> | |
13 | #include "f2fs.h" | |
14 | #include "node.h" | |
15 | #include "segment.h" | |
16 | ||
441ac5cb JK |
17 | /* |
18 | * Roll forward recovery scenarios. | |
19 | * | |
20 | * [Term] F: fsync_mark, D: dentry_mark | |
21 | * | |
22 | * 1. inode(x) | CP | inode(x) | dnode(F) | |
23 | * -> Update the latest inode(x). | |
24 | * | |
25 | * 2. inode(x) | CP | inode(F) | dnode(F) | |
26 | * -> No problem. | |
27 | * | |
28 | * 3. inode(x) | CP | dnode(F) | inode(x) | |
29 | * -> Recover to the latest dnode(F), and drop the last inode(x) | |
30 | * | |
31 | * 4. inode(x) | CP | dnode(F) | inode(F) | |
32 | * -> No problem. | |
33 | * | |
34 | * 5. CP | inode(x) | dnode(F) | |
35 | * -> The inode(DF) was missing. Should drop this dnode(F). | |
36 | * | |
37 | * 6. CP | inode(DF) | dnode(F) | |
38 | * -> No problem. | |
39 | * | |
40 | * 7. CP | dnode(F) | inode(DF) | |
41 | * -> If f2fs_iget fails, then goto next to find inode(DF). | |
42 | * | |
43 | * 8. CP | dnode(F) | inode(x) | |
44 | * -> If f2fs_iget fails, then goto next to find inode(DF). | |
45 | * But it will fail due to no inode(DF). | |
46 | */ | |
47 | ||
d624c96f JK |
48 | static struct kmem_cache *fsync_entry_slab; |
49 | ||
50 | bool space_for_roll_forward(struct f2fs_sb_info *sbi) | |
51 | { | |
52 | if (sbi->last_valid_block_count + sbi->alloc_valid_block_count | |
53 | > sbi->user_block_count) | |
54 | return false; | |
55 | return true; | |
56 | } | |
57 | ||
58 | static struct fsync_inode_entry *get_fsync_inode(struct list_head *head, | |
59 | nid_t ino) | |
60 | { | |
d624c96f JK |
61 | struct fsync_inode_entry *entry; |
62 | ||
2d7b822a | 63 | list_for_each_entry(entry, head, list) |
d624c96f JK |
64 | if (entry->inode->i_ino == ino) |
65 | return entry; | |
2d7b822a | 66 | |
d624c96f JK |
67 | return NULL; |
68 | } | |
69 | ||
c52e1b10 | 70 | static int recover_dentry(struct inode *inode, struct page *ipage) |
d624c96f | 71 | { |
58bfaf44 | 72 | struct f2fs_inode *raw_inode = F2FS_INODE(ipage); |
74d0b917 | 73 | nid_t pino = le32_to_cpu(raw_inode->i_pino); |
6b8213d9 | 74 | struct f2fs_dir_entry *de; |
b7f7a5e0 | 75 | struct qstr name; |
d624c96f | 76 | struct page *page; |
6b8213d9 | 77 | struct inode *dir, *einode; |
d624c96f JK |
78 | int err = 0; |
79 | ||
ed57c27f JK |
80 | dir = f2fs_iget(inode->i_sb, pino); |
81 | if (IS_ERR(dir)) { | |
82 | err = PTR_ERR(dir); | |
83 | goto out; | |
84 | } | |
85 | ||
b7f7a5e0 AV |
86 | name.len = le32_to_cpu(raw_inode->i_namelen); |
87 | name.name = raw_inode->i_name; | |
d96b1431 CY |
88 | |
89 | if (unlikely(name.len > F2FS_NAME_LEN)) { | |
90 | WARN_ON(1); | |
91 | err = -ENAMETOOLONG; | |
86928f98 | 92 | goto out_err; |
d96b1431 | 93 | } |
6b8213d9 JK |
94 | retry: |
95 | de = f2fs_find_entry(dir, &name, &page); | |
418f6c27 | 96 | if (de && inode->i_ino == le32_to_cpu(de->ino)) |
2e5558f4 | 97 | goto out_unmap_put; |
418f6c27 | 98 | |
6b8213d9 JK |
99 | if (de) { |
100 | einode = f2fs_iget(inode->i_sb, le32_to_cpu(de->ino)); | |
101 | if (IS_ERR(einode)) { | |
102 | WARN_ON(1); | |
5c1f9927 CY |
103 | err = PTR_ERR(einode); |
104 | if (err == -ENOENT) | |
6b8213d9 | 105 | err = -EEXIST; |
2e5558f4 RK |
106 | goto out_unmap_put; |
107 | } | |
4081363f | 108 | err = acquire_orphan_inode(F2FS_I_SB(inode)); |
2e5558f4 RK |
109 | if (err) { |
110 | iput(einode); | |
111 | goto out_unmap_put; | |
6b8213d9 | 112 | } |
dbeacf02 | 113 | f2fs_delete_entry(de, page, dir, einode); |
6b8213d9 JK |
114 | iput(einode); |
115 | goto retry; | |
d624c96f | 116 | } |
510022a8 | 117 | err = __f2fs_add_link(dir, &name, inode, inode->i_ino, inode->i_mode); |
86928f98 JK |
118 | if (err) |
119 | goto out_err; | |
120 | ||
121 | if (is_inode_flag_set(F2FS_I(dir), FI_DELAY_IPUT)) { | |
122 | iput(dir); | |
123 | } else { | |
124 | add_dirty_dir_inode(dir); | |
125 | set_inode_flag(F2FS_I(dir), FI_DELAY_IPUT); | |
126 | } | |
127 | ||
2e5558f4 RK |
128 | goto out; |
129 | ||
130 | out_unmap_put: | |
9486ba44 | 131 | f2fs_dentry_kunmap(dir, page); |
2e5558f4 | 132 | f2fs_put_page(page, 0); |
86928f98 JK |
133 | out_err: |
134 | iput(dir); | |
d624c96f | 135 | out: |
6c311ec6 CF |
136 | f2fs_msg(inode->i_sb, KERN_NOTICE, |
137 | "%s: ino = %x, name = %s, dir = %lx, err = %d", | |
138 | __func__, ino_of_node(ipage), raw_inode->i_name, | |
f28c06fa | 139 | IS_ERR(dir) ? 0 : dir->i_ino, err); |
d624c96f JK |
140 | return err; |
141 | } | |
142 | ||
c52e1b10 | 143 | static void recover_inode(struct inode *inode, struct page *page) |
d624c96f | 144 | { |
441ac5cb JK |
145 | struct f2fs_inode *raw = F2FS_INODE(page); |
146 | ||
147 | inode->i_mode = le16_to_cpu(raw->i_mode); | |
148 | i_size_write(inode, le64_to_cpu(raw->i_size)); | |
149 | inode->i_atime.tv_sec = le64_to_cpu(raw->i_mtime); | |
150 | inode->i_ctime.tv_sec = le64_to_cpu(raw->i_ctime); | |
151 | inode->i_mtime.tv_sec = le64_to_cpu(raw->i_mtime); | |
152 | inode->i_atime.tv_nsec = le32_to_cpu(raw->i_mtime_nsec); | |
153 | inode->i_ctime.tv_nsec = le32_to_cpu(raw->i_ctime_nsec); | |
154 | inode->i_mtime.tv_nsec = le32_to_cpu(raw->i_mtime_nsec); | |
f356fe0c JK |
155 | |
156 | f2fs_msg(inode->i_sb, KERN_NOTICE, "recover_inode: ino = %x, name = %s", | |
c52e1b10 | 157 | ino_of_node(page), F2FS_INODE(page)->i_name); |
d624c96f JK |
158 | } |
159 | ||
160 | static int find_fsync_dnodes(struct f2fs_sb_info *sbi, struct list_head *head) | |
161 | { | |
d71b5564 | 162 | unsigned long long cp_ver = cur_cp_version(F2FS_CKPT(sbi)); |
d624c96f | 163 | struct curseg_info *curseg; |
4c521f49 | 164 | struct page *page = NULL; |
d624c96f JK |
165 | block_t blkaddr; |
166 | int err = 0; | |
167 | ||
168 | /* get node pages in the current segment */ | |
169 | curseg = CURSEG_I(sbi, CURSEG_WARM_NODE); | |
695fd1ed | 170 | blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); |
d624c96f | 171 | |
635aee1f CY |
172 | ra_meta_pages(sbi, blkaddr, 1, META_POR); |
173 | ||
d624c96f JK |
174 | while (1) { |
175 | struct fsync_inode_entry *entry; | |
176 | ||
7cd8558b | 177 | if (blkaddr < MAIN_BLKADDR(sbi) || blkaddr >= MAX_BLKADDR(sbi)) |
4c521f49 | 178 | return 0; |
d624c96f | 179 | |
635aee1f | 180 | page = get_meta_page(sbi, blkaddr); |
393ff91f | 181 | |
6ead1142 | 182 | if (cp_ver != cpver_of_node(page)) |
f356fe0c | 183 | break; |
d624c96f JK |
184 | |
185 | if (!is_fsync_dnode(page)) | |
186 | goto next; | |
187 | ||
188 | entry = get_fsync_inode(head, ino_of_node(page)); | |
418f6c27 | 189 | if (!entry) { |
d624c96f | 190 | if (IS_INODE(page) && is_dent_dnode(page)) { |
6ead1142 JK |
191 | err = recover_inode_page(sbi, page); |
192 | if (err) | |
f356fe0c | 193 | break; |
d624c96f JK |
194 | } |
195 | ||
196 | /* add this fsync inode to the list */ | |
c52e1b10 | 197 | entry = kmem_cache_alloc(fsync_entry_slab, GFP_F2FS_ZERO); |
d624c96f JK |
198 | if (!entry) { |
199 | err = -ENOMEM; | |
f356fe0c | 200 | break; |
d624c96f | 201 | } |
441ac5cb JK |
202 | /* |
203 | * CP | dnode(F) | inode(DF) | |
204 | * For this case, we should not give up now. | |
205 | */ | |
d624c96f JK |
206 | entry->inode = f2fs_iget(sbi->sb, ino_of_node(page)); |
207 | if (IS_ERR(entry->inode)) { | |
208 | err = PTR_ERR(entry->inode); | |
fd8bb65f | 209 | kmem_cache_free(fsync_entry_slab, entry); |
8fbc418f JK |
210 | if (err == -ENOENT) { |
211 | err = 0; | |
441ac5cb | 212 | goto next; |
8fbc418f | 213 | } |
f356fe0c | 214 | break; |
d624c96f | 215 | } |
fd8bb65f | 216 | list_add_tail(&entry->list, head); |
d624c96f | 217 | } |
addbe45b JK |
218 | entry->blkaddr = blkaddr; |
219 | ||
c52e1b10 JK |
220 | if (IS_INODE(page)) { |
221 | entry->last_inode = blkaddr; | |
222 | if (is_dent_dnode(page)) | |
223 | entry->last_dentry = blkaddr; | |
224 | } | |
d624c96f JK |
225 | next: |
226 | /* check next segment */ | |
227 | blkaddr = next_blkaddr_of_node(page); | |
4c521f49 | 228 | f2fs_put_page(page, 1); |
635aee1f CY |
229 | |
230 | ra_meta_pages_cond(sbi, blkaddr); | |
d624c96f | 231 | } |
4c521f49 | 232 | f2fs_put_page(page, 1); |
d624c96f JK |
233 | return err; |
234 | } | |
235 | ||
5ebefc5b | 236 | static void destroy_fsync_dnodes(struct list_head *head) |
d624c96f | 237 | { |
d8b79b2f DC |
238 | struct fsync_inode_entry *entry, *tmp; |
239 | ||
240 | list_for_each_entry_safe(entry, tmp, head, list) { | |
d624c96f JK |
241 | iput(entry->inode); |
242 | list_del(&entry->list); | |
243 | kmem_cache_free(fsync_entry_slab, entry); | |
244 | } | |
245 | } | |
246 | ||
39cf72cf | 247 | static int check_index_in_prev_nodes(struct f2fs_sb_info *sbi, |
b292dcab | 248 | block_t blkaddr, struct dnode_of_data *dn) |
d624c96f JK |
249 | { |
250 | struct seg_entry *sentry; | |
251 | unsigned int segno = GET_SEGNO(sbi, blkaddr); | |
491c0854 | 252 | unsigned short blkoff = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); |
f6517cfc | 253 | struct f2fs_summary_block *sum_node; |
d624c96f | 254 | struct f2fs_summary sum; |
f6517cfc | 255 | struct page *sum_page, *node_page; |
c9ef4810 | 256 | struct dnode_of_data tdn = *dn; |
b292dcab | 257 | nid_t ino, nid; |
d624c96f | 258 | struct inode *inode; |
de93653f | 259 | unsigned int offset; |
d624c96f JK |
260 | block_t bidx; |
261 | int i; | |
262 | ||
263 | sentry = get_seg_entry(sbi, segno); | |
264 | if (!f2fs_test_bit(blkoff, sentry->cur_valid_map)) | |
39cf72cf | 265 | return 0; |
d624c96f JK |
266 | |
267 | /* Get the previous summary */ | |
268 | for (i = CURSEG_WARM_DATA; i <= CURSEG_COLD_DATA; i++) { | |
269 | struct curseg_info *curseg = CURSEG_I(sbi, i); | |
270 | if (curseg->segno == segno) { | |
271 | sum = curseg->sum_blk->entries[blkoff]; | |
f6517cfc | 272 | goto got_it; |
d624c96f JK |
273 | } |
274 | } | |
d624c96f | 275 | |
f6517cfc JK |
276 | sum_page = get_sum_page(sbi, segno); |
277 | sum_node = (struct f2fs_summary_block *)page_address(sum_page); | |
278 | sum = sum_node->entries[blkoff]; | |
279 | f2fs_put_page(sum_page, 1); | |
280 | got_it: | |
b292dcab JK |
281 | /* Use the locked dnode page and inode */ |
282 | nid = le32_to_cpu(sum.nid); | |
283 | if (dn->inode->i_ino == nid) { | |
b292dcab | 284 | tdn.nid = nid; |
c9ef4810 JK |
285 | if (!dn->inode_page_locked) |
286 | lock_page(dn->inode_page); | |
b292dcab | 287 | tdn.node_page = dn->inode_page; |
060dd67b | 288 | tdn.ofs_in_node = le16_to_cpu(sum.ofs_in_node); |
c9ef4810 | 289 | goto truncate_out; |
b292dcab | 290 | } else if (dn->nid == nid) { |
060dd67b | 291 | tdn.ofs_in_node = le16_to_cpu(sum.ofs_in_node); |
c9ef4810 | 292 | goto truncate_out; |
b292dcab JK |
293 | } |
294 | ||
d624c96f | 295 | /* Get the node page */ |
b292dcab | 296 | node_page = get_node_page(sbi, nid); |
39cf72cf JK |
297 | if (IS_ERR(node_page)) |
298 | return PTR_ERR(node_page); | |
de93653f JK |
299 | |
300 | offset = ofs_of_node(node_page); | |
d624c96f JK |
301 | ino = ino_of_node(node_page); |
302 | f2fs_put_page(node_page, 1); | |
303 | ||
60979115 JK |
304 | if (ino != dn->inode->i_ino) { |
305 | /* Deallocate previous index in the node page */ | |
306 | inode = f2fs_iget(sbi->sb, ino); | |
307 | if (IS_ERR(inode)) | |
308 | return PTR_ERR(inode); | |
309 | } else { | |
310 | inode = dn->inode; | |
311 | } | |
06025f4d | 312 | |
de93653f | 313 | bidx = start_bidx_of_node(offset, F2FS_I(inode)) + |
60979115 | 314 | le16_to_cpu(sum.ofs_in_node); |
de93653f | 315 | |
c9ef4810 JK |
316 | /* |
317 | * if inode page is locked, unlock temporarily, but its reference | |
318 | * count keeps alive. | |
319 | */ | |
320 | if (ino == dn->inode->i_ino && dn->inode_page_locked) | |
321 | unlock_page(dn->inode_page); | |
322 | ||
323 | set_new_dnode(&tdn, inode, NULL, NULL, 0); | |
324 | if (get_dnode_of_data(&tdn, bidx, LOOKUP_NODE)) | |
325 | goto out; | |
326 | ||
327 | if (tdn.data_blkaddr == blkaddr) | |
328 | truncate_data_blocks_range(&tdn, 1); | |
329 | ||
330 | f2fs_put_dnode(&tdn); | |
331 | out: | |
332 | if (ino != dn->inode->i_ino) | |
60979115 | 333 | iput(inode); |
c9ef4810 JK |
334 | else if (dn->inode_page_locked) |
335 | lock_page(dn->inode_page); | |
336 | return 0; | |
337 | ||
338 | truncate_out: | |
339 | if (datablock_addr(tdn.node_page, tdn.ofs_in_node) == blkaddr) | |
340 | truncate_data_blocks_range(&tdn, 1); | |
341 | if (dn->inode->i_ino == nid && !dn->inode_page_locked) | |
342 | unlock_page(dn->inode_page); | |
39cf72cf | 343 | return 0; |
d624c96f JK |
344 | } |
345 | ||
6ead1142 | 346 | static int do_recover_data(struct f2fs_sb_info *sbi, struct inode *inode, |
d624c96f JK |
347 | struct page *page, block_t blkaddr) |
348 | { | |
de93653f | 349 | struct f2fs_inode_info *fi = F2FS_I(inode); |
d624c96f JK |
350 | unsigned int start, end; |
351 | struct dnode_of_data dn; | |
352 | struct f2fs_summary sum; | |
353 | struct node_info ni; | |
f356fe0c | 354 | int err = 0, recovered = 0; |
d624c96f | 355 | |
1c35a90e JK |
356 | /* step 1: recover xattr */ |
357 | if (IS_INODE(page)) { | |
358 | recover_inline_xattr(inode, page); | |
359 | } else if (f2fs_has_xattr_block(ofs_of_node(page))) { | |
bc4a1f87 JK |
360 | /* |
361 | * Deprecated; xattr blocks should be found from cold log. | |
362 | * But, we should remain this for backward compatibility. | |
363 | */ | |
1c35a90e | 364 | recover_xattr_data(inode, page, blkaddr); |
1e1bb4ba | 365 | goto out; |
1c35a90e | 366 | } |
1e1bb4ba | 367 | |
1c35a90e JK |
368 | /* step 2: recover inline data */ |
369 | if (recover_inline_data(inode, page)) | |
abb2366c JK |
370 | goto out; |
371 | ||
1c35a90e | 372 | /* step 3: recover data indices */ |
de93653f | 373 | start = start_bidx_of_node(ofs_of_node(page), fi); |
6403eb1f | 374 | end = start + ADDRS_PER_PAGE(page, fi); |
d624c96f | 375 | |
e479556b | 376 | f2fs_lock_op(sbi); |
1e1bb4ba | 377 | |
d624c96f | 378 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
39936837 | 379 | |
6ead1142 | 380 | err = get_dnode_of_data(&dn, start, ALLOC_NODE); |
39936837 | 381 | if (err) { |
e479556b | 382 | f2fs_unlock_op(sbi); |
1e1bb4ba | 383 | goto out; |
39936837 | 384 | } |
d624c96f | 385 | |
3cb5ad15 | 386 | f2fs_wait_on_page_writeback(dn.node_page, NODE); |
d624c96f JK |
387 | |
388 | get_node_info(sbi, dn.nid, &ni); | |
9850cf4a JK |
389 | f2fs_bug_on(sbi, ni.ino != ino_of_node(page)); |
390 | f2fs_bug_on(sbi, ofs_of_node(dn.node_page) != ofs_of_node(page)); | |
d624c96f JK |
391 | |
392 | for (; start < end; start++) { | |
393 | block_t src, dest; | |
394 | ||
395 | src = datablock_addr(dn.node_page, dn.ofs_in_node); | |
396 | dest = datablock_addr(page, dn.ofs_in_node); | |
397 | ||
e03b07d9 JK |
398 | if (src != dest && dest != NEW_ADDR && dest != NULL_ADDR && |
399 | dest >= MAIN_BLKADDR(sbi) && dest < MAX_BLKADDR(sbi)) { | |
400 | ||
d624c96f | 401 | if (src == NULL_ADDR) { |
5d56b671 | 402 | err = reserve_new_block(&dn); |
d624c96f | 403 | /* We should not get -ENOSPC */ |
9850cf4a | 404 | f2fs_bug_on(sbi, err); |
d624c96f JK |
405 | } |
406 | ||
407 | /* Check the previous node page having this index */ | |
39cf72cf JK |
408 | err = check_index_in_prev_nodes(sbi, dest, &dn); |
409 | if (err) | |
410 | goto err; | |
d624c96f JK |
411 | |
412 | set_summary(&sum, dn.nid, dn.ofs_in_node, ni.version); | |
413 | ||
414 | /* write dummy data page */ | |
415 | recover_data_page(sbi, NULL, &sum, src, dest); | |
e1509cf2 | 416 | dn.data_blkaddr = dest; |
216a620a | 417 | set_data_blkaddr(&dn); |
7e4dde79 | 418 | f2fs_update_extent_cache(&dn); |
f356fe0c | 419 | recovered++; |
d624c96f JK |
420 | } |
421 | dn.ofs_in_node++; | |
422 | } | |
423 | ||
d624c96f JK |
424 | if (IS_INODE(dn.node_page)) |
425 | sync_inode_page(&dn); | |
426 | ||
427 | copy_node_footer(dn.node_page, page); | |
428 | fill_node_footer(dn.node_page, dn.nid, ni.ino, | |
429 | ofs_of_node(page), false); | |
430 | set_page_dirty(dn.node_page); | |
39cf72cf | 431 | err: |
d624c96f | 432 | f2fs_put_dnode(&dn); |
e479556b | 433 | f2fs_unlock_op(sbi); |
1e1bb4ba | 434 | out: |
6c311ec6 CF |
435 | f2fs_msg(sbi->sb, KERN_NOTICE, |
436 | "recover_data: ino = %lx, recovered = %d blocks, err = %d", | |
437 | inode->i_ino, recovered, err); | |
39cf72cf | 438 | return err; |
d624c96f JK |
439 | } |
440 | ||
6ead1142 | 441 | static int recover_data(struct f2fs_sb_info *sbi, |
d624c96f JK |
442 | struct list_head *head, int type) |
443 | { | |
d71b5564 | 444 | unsigned long long cp_ver = cur_cp_version(F2FS_CKPT(sbi)); |
d624c96f | 445 | struct curseg_info *curseg; |
4c521f49 | 446 | struct page *page = NULL; |
6ead1142 | 447 | int err = 0; |
d624c96f JK |
448 | block_t blkaddr; |
449 | ||
450 | /* get node pages in the current segment */ | |
451 | curseg = CURSEG_I(sbi, type); | |
452 | blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); | |
453 | ||
d624c96f JK |
454 | while (1) { |
455 | struct fsync_inode_entry *entry; | |
456 | ||
7cd8558b | 457 | if (blkaddr < MAIN_BLKADDR(sbi) || blkaddr >= MAX_BLKADDR(sbi)) |
4c521f49 | 458 | break; |
d624c96f | 459 | |
635aee1f CY |
460 | ra_meta_pages_cond(sbi, blkaddr); |
461 | ||
462 | page = get_meta_page(sbi, blkaddr); | |
393ff91f | 463 | |
4c521f49 JK |
464 | if (cp_ver != cpver_of_node(page)) { |
465 | f2fs_put_page(page, 1); | |
45856aff | 466 | break; |
4c521f49 | 467 | } |
d624c96f JK |
468 | |
469 | entry = get_fsync_inode(head, ino_of_node(page)); | |
470 | if (!entry) | |
471 | goto next; | |
441ac5cb JK |
472 | /* |
473 | * inode(x) | CP | inode(x) | dnode(F) | |
474 | * In this case, we can lose the latest inode(x). | |
c52e1b10 | 475 | * So, call recover_inode for the inode update. |
441ac5cb | 476 | */ |
c52e1b10 JK |
477 | if (entry->last_inode == blkaddr) |
478 | recover_inode(entry->inode, page); | |
479 | if (entry->last_dentry == blkaddr) { | |
480 | err = recover_dentry(entry->inode, page); | |
481 | if (err) { | |
482 | f2fs_put_page(page, 1); | |
483 | break; | |
484 | } | |
485 | } | |
6ead1142 | 486 | err = do_recover_data(sbi, entry->inode, page, blkaddr); |
4c521f49 JK |
487 | if (err) { |
488 | f2fs_put_page(page, 1); | |
45856aff | 489 | break; |
4c521f49 | 490 | } |
d624c96f JK |
491 | |
492 | if (entry->blkaddr == blkaddr) { | |
493 | iput(entry->inode); | |
494 | list_del(&entry->list); | |
495 | kmem_cache_free(fsync_entry_slab, entry); | |
496 | } | |
497 | next: | |
498 | /* check next segment */ | |
499 | blkaddr = next_blkaddr_of_node(page); | |
4c521f49 | 500 | f2fs_put_page(page, 1); |
d624c96f | 501 | } |
6ead1142 JK |
502 | if (!err) |
503 | allocate_new_segments(sbi); | |
504 | return err; | |
d624c96f JK |
505 | } |
506 | ||
6ead1142 | 507 | int recover_fsync_data(struct f2fs_sb_info *sbi) |
d624c96f | 508 | { |
cf2271e7 | 509 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_WARM_NODE); |
d624c96f | 510 | struct list_head inode_list; |
cf2271e7 | 511 | block_t blkaddr; |
6ead1142 | 512 | int err; |
aabe5136 | 513 | bool need_writecp = false; |
d624c96f JK |
514 | |
515 | fsync_entry_slab = f2fs_kmem_cache_create("f2fs_fsync_inode_entry", | |
e8512d2e | 516 | sizeof(struct fsync_inode_entry)); |
6bacf52f | 517 | if (!fsync_entry_slab) |
6ead1142 | 518 | return -ENOMEM; |
d624c96f JK |
519 | |
520 | INIT_LIST_HEAD(&inode_list); | |
521 | ||
522 | /* step #1: find fsynced inode numbers */ | |
caf0047e | 523 | set_sbi_flag(sbi, SBI_POR_DOING); |
cf2271e7 | 524 | |
14f4e690 JK |
525 | /* prevent checkpoint */ |
526 | mutex_lock(&sbi->cp_mutex); | |
527 | ||
cf2271e7 JK |
528 | blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); |
529 | ||
6ead1142 JK |
530 | err = find_fsync_dnodes(sbi, &inode_list); |
531 | if (err) | |
d624c96f JK |
532 | goto out; |
533 | ||
534 | if (list_empty(&inode_list)) | |
535 | goto out; | |
536 | ||
aabe5136 | 537 | need_writecp = true; |
691c6fd2 | 538 | |
d624c96f | 539 | /* step #2: recover data */ |
6ead1142 | 540 | err = recover_data(sbi, &inode_list, CURSEG_WARM_NODE); |
b307384e | 541 | if (!err) |
9850cf4a | 542 | f2fs_bug_on(sbi, !list_empty(&inode_list)); |
d624c96f | 543 | out: |
5ebefc5b | 544 | destroy_fsync_dnodes(&inode_list); |
d624c96f | 545 | kmem_cache_destroy(fsync_entry_slab); |
cf2271e7 | 546 | |
4c521f49 JK |
547 | /* truncate meta pages to be used by the recovery */ |
548 | truncate_inode_pages_range(META_MAPPING(sbi), | |
7cd8558b | 549 | MAIN_BLKADDR(sbi) << PAGE_CACHE_SHIFT, -1); |
4c521f49 | 550 | |
cf2271e7 JK |
551 | if (err) { |
552 | truncate_inode_pages_final(NODE_MAPPING(sbi)); | |
553 | truncate_inode_pages_final(META_MAPPING(sbi)); | |
554 | } | |
555 | ||
caf0047e | 556 | clear_sbi_flag(sbi, SBI_POR_DOING); |
cf2271e7 JK |
557 | if (err) { |
558 | discard_next_dnode(sbi, blkaddr); | |
559 | ||
560 | /* Flush all the NAT/SIT pages */ | |
561 | while (get_pages(sbi, F2FS_DIRTY_META)) | |
562 | sync_meta_pages(sbi, META, LONG_MAX); | |
14f4e690 JK |
563 | set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG); |
564 | mutex_unlock(&sbi->cp_mutex); | |
cf2271e7 | 565 | } else if (need_writecp) { |
75ab4cb8 | 566 | struct cp_control cpc = { |
10027551 | 567 | .reason = CP_RECOVERY, |
75ab4cb8 | 568 | }; |
14f4e690 | 569 | mutex_unlock(&sbi->cp_mutex); |
75ab4cb8 | 570 | write_checkpoint(sbi, &cpc); |
14f4e690 JK |
571 | } else { |
572 | mutex_unlock(&sbi->cp_mutex); | |
cf2271e7 | 573 | } |
6ead1142 | 574 | return err; |
d624c96f | 575 | } |