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 | { | |
41382ec4 JK |
52 | s64 nalloc = percpu_counter_sum_positive(&sbi->alloc_valid_block_count); |
53 | ||
54 | if (sbi->last_valid_block_count + nalloc > sbi->user_block_count) | |
d624c96f JK |
55 | return false; |
56 | return true; | |
57 | } | |
58 | ||
59 | static struct fsync_inode_entry *get_fsync_inode(struct list_head *head, | |
60 | nid_t ino) | |
61 | { | |
d624c96f JK |
62 | struct fsync_inode_entry *entry; |
63 | ||
2d7b822a | 64 | list_for_each_entry(entry, head, list) |
d624c96f JK |
65 | if (entry->inode->i_ino == ino) |
66 | return entry; | |
2d7b822a | 67 | |
d624c96f JK |
68 | return NULL; |
69 | } | |
70 | ||
f4702d61 | 71 | static struct fsync_inode_entry *add_fsync_inode(struct f2fs_sb_info *sbi, |
4b2414d0 | 72 | struct list_head *head, nid_t ino, bool quota_inode) |
3f8ab270 | 73 | { |
e8ea9b3d | 74 | struct inode *inode; |
3f8ab270 | 75 | struct fsync_inode_entry *entry; |
4b2414d0 | 76 | int err; |
3f8ab270 | 77 | |
e8ea9b3d | 78 | inode = f2fs_iget_retry(sbi->sb, ino); |
f4702d61 JK |
79 | if (IS_ERR(inode)) |
80 | return ERR_CAST(inode); | |
81 | ||
4b2414d0 CY |
82 | err = dquot_initialize(inode); |
83 | if (err) | |
84 | goto err_out; | |
85 | ||
86 | if (quota_inode) { | |
87 | err = dquot_alloc_inode(inode); | |
88 | if (err) | |
89 | goto err_out; | |
90 | } | |
91 | ||
e8ea9b3d | 92 | entry = f2fs_kmem_cache_alloc(fsync_entry_slab, GFP_F2FS_ZERO); |
3f8ab270 CY |
93 | entry->inode = inode; |
94 | list_add_tail(&entry->list, head); | |
95 | ||
96 | return entry; | |
4b2414d0 CY |
97 | err_out: |
98 | iput(inode); | |
99 | return ERR_PTR(err); | |
3f8ab270 CY |
100 | } |
101 | ||
102 | static void del_fsync_inode(struct fsync_inode_entry *entry) | |
103 | { | |
104 | iput(entry->inode); | |
105 | list_del(&entry->list); | |
106 | kmem_cache_free(fsync_entry_slab, entry); | |
107 | } | |
108 | ||
f61cce5b CY |
109 | static int recover_dentry(struct inode *inode, struct page *ipage, |
110 | struct list_head *dir_list) | |
d624c96f | 111 | { |
58bfaf44 | 112 | struct f2fs_inode *raw_inode = F2FS_INODE(ipage); |
74d0b917 | 113 | nid_t pino = le32_to_cpu(raw_inode->i_pino); |
6b8213d9 | 114 | struct f2fs_dir_entry *de; |
e7ba108a | 115 | struct fscrypt_name fname; |
d624c96f | 116 | struct page *page; |
6b8213d9 | 117 | struct inode *dir, *einode; |
f61cce5b | 118 | struct fsync_inode_entry *entry; |
d624c96f | 119 | int err = 0; |
e7ba108a | 120 | char *name; |
d624c96f | 121 | |
f61cce5b CY |
122 | entry = get_fsync_inode(dir_list, pino); |
123 | if (!entry) { | |
4b2414d0 CY |
124 | entry = add_fsync_inode(F2FS_I_SB(inode), dir_list, |
125 | pino, false); | |
f4702d61 JK |
126 | if (IS_ERR(entry)) { |
127 | dir = ERR_CAST(entry); | |
128 | err = PTR_ERR(entry); | |
f61cce5b CY |
129 | goto out; |
130 | } | |
ed57c27f JK |
131 | } |
132 | ||
f61cce5b CY |
133 | dir = entry->inode; |
134 | ||
e7ba108a SL |
135 | memset(&fname, 0, sizeof(struct fscrypt_name)); |
136 | fname.disk_name.len = le32_to_cpu(raw_inode->i_namelen); | |
137 | fname.disk_name.name = raw_inode->i_name; | |
d96b1431 | 138 | |
e7ba108a | 139 | if (unlikely(fname.disk_name.len > F2FS_NAME_LEN)) { |
d96b1431 CY |
140 | WARN_ON(1); |
141 | err = -ENAMETOOLONG; | |
f61cce5b | 142 | goto out; |
d96b1431 | 143 | } |
6b8213d9 | 144 | retry: |
e7ba108a | 145 | de = __f2fs_find_entry(dir, &fname, &page); |
418f6c27 | 146 | if (de && inode->i_ino == le32_to_cpu(de->ino)) |
2e5558f4 | 147 | goto out_unmap_put; |
418f6c27 | 148 | |
6b8213d9 | 149 | if (de) { |
e8ea9b3d | 150 | einode = f2fs_iget_retry(inode->i_sb, le32_to_cpu(de->ino)); |
6b8213d9 JK |
151 | if (IS_ERR(einode)) { |
152 | WARN_ON(1); | |
5c1f9927 CY |
153 | err = PTR_ERR(einode); |
154 | if (err == -ENOENT) | |
6b8213d9 | 155 | err = -EEXIST; |
2e5558f4 RK |
156 | goto out_unmap_put; |
157 | } | |
4b2414d0 CY |
158 | |
159 | err = dquot_initialize(einode); | |
160 | if (err) { | |
161 | iput(einode); | |
162 | goto out_unmap_put; | |
163 | } | |
164 | ||
4081363f | 165 | err = acquire_orphan_inode(F2FS_I_SB(inode)); |
2e5558f4 RK |
166 | if (err) { |
167 | iput(einode); | |
168 | goto out_unmap_put; | |
6b8213d9 | 169 | } |
dbeacf02 | 170 | f2fs_delete_entry(de, page, dir, einode); |
6b8213d9 JK |
171 | iput(einode); |
172 | goto retry; | |
91246c21 CY |
173 | } else if (IS_ERR(page)) { |
174 | err = PTR_ERR(page); | |
175 | } else { | |
e7ba108a | 176 | err = __f2fs_do_add_link(dir, &fname, inode, |
91246c21 | 177 | inode->i_ino, inode->i_mode); |
d624c96f | 178 | } |
e8ea9b3d JK |
179 | if (err == -ENOMEM) |
180 | goto retry; | |
2e5558f4 RK |
181 | goto out; |
182 | ||
183 | out_unmap_put: | |
9486ba44 | 184 | f2fs_dentry_kunmap(dir, page); |
2e5558f4 | 185 | f2fs_put_page(page, 0); |
d624c96f | 186 | out: |
e7ba108a SL |
187 | if (file_enc_name(inode)) |
188 | name = "<encrypted>"; | |
189 | else | |
190 | name = raw_inode->i_name; | |
6c311ec6 CF |
191 | f2fs_msg(inode->i_sb, KERN_NOTICE, |
192 | "%s: ino = %x, name = %s, dir = %lx, err = %d", | |
e7ba108a | 193 | __func__, ino_of_node(ipage), name, |
f28c06fa | 194 | IS_ERR(dir) ? 0 : dir->i_ino, err); |
d624c96f JK |
195 | return err; |
196 | } | |
197 | ||
c52e1b10 | 198 | static void recover_inode(struct inode *inode, struct page *page) |
d624c96f | 199 | { |
441ac5cb | 200 | struct f2fs_inode *raw = F2FS_INODE(page); |
e7d55452 | 201 | char *name; |
441ac5cb JK |
202 | |
203 | inode->i_mode = le16_to_cpu(raw->i_mode); | |
fc9581c8 | 204 | f2fs_i_size_write(inode, le64_to_cpu(raw->i_size)); |
9f0552e0 | 205 | inode->i_atime.tv_sec = le64_to_cpu(raw->i_atime); |
441ac5cb JK |
206 | inode->i_ctime.tv_sec = le64_to_cpu(raw->i_ctime); |
207 | inode->i_mtime.tv_sec = le64_to_cpu(raw->i_mtime); | |
9f0552e0 | 208 | inode->i_atime.tv_nsec = le32_to_cpu(raw->i_atime_nsec); |
441ac5cb JK |
209 | inode->i_ctime.tv_nsec = le32_to_cpu(raw->i_ctime_nsec); |
210 | inode->i_mtime.tv_nsec = le32_to_cpu(raw->i_mtime_nsec); | |
f356fe0c | 211 | |
26787236 JK |
212 | F2FS_I(inode)->i_advise = raw->i_advise; |
213 | ||
e7d55452 JK |
214 | if (file_enc_name(inode)) |
215 | name = "<encrypted>"; | |
216 | else | |
217 | name = F2FS_INODE(page)->i_name; | |
218 | ||
f356fe0c | 219 | f2fs_msg(inode->i_sb, KERN_NOTICE, "recover_inode: ino = %x, name = %s", |
e7d55452 | 220 | ino_of_node(page), name); |
d624c96f JK |
221 | } |
222 | ||
d40d30c5 JK |
223 | static int find_fsync_dnodes(struct f2fs_sb_info *sbi, struct list_head *head, |
224 | bool check_only) | |
d624c96f | 225 | { |
d624c96f | 226 | struct curseg_info *curseg; |
4c521f49 | 227 | struct page *page = NULL; |
d624c96f JK |
228 | block_t blkaddr; |
229 | int err = 0; | |
230 | ||
231 | /* get node pages in the current segment */ | |
232 | curseg = CURSEG_I(sbi, CURSEG_WARM_NODE); | |
695fd1ed | 233 | blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); |
d624c96f | 234 | |
d624c96f JK |
235 | while (1) { |
236 | struct fsync_inode_entry *entry; | |
237 | ||
f0c9cada | 238 | if (!is_valid_blkaddr(sbi, blkaddr, META_POR)) |
4c521f49 | 239 | return 0; |
d624c96f | 240 | |
2b947003 | 241 | page = get_tmp_page(sbi, blkaddr); |
393ff91f | 242 | |
a468f0ef | 243 | if (!is_recoverable_dnode(page)) |
f356fe0c | 244 | break; |
d624c96f JK |
245 | |
246 | if (!is_fsync_dnode(page)) | |
247 | goto next; | |
248 | ||
249 | entry = get_fsync_inode(head, ino_of_node(page)); | |
d47b8715 | 250 | if (!entry) { |
4b2414d0 CY |
251 | bool quota_inode = false; |
252 | ||
d40d30c5 JK |
253 | if (!check_only && |
254 | IS_INODE(page) && is_dent_dnode(page)) { | |
6ead1142 JK |
255 | err = recover_inode_page(sbi, page); |
256 | if (err) | |
f356fe0c | 257 | break; |
4b2414d0 | 258 | quota_inode = true; |
d624c96f JK |
259 | } |
260 | ||
441ac5cb JK |
261 | /* |
262 | * CP | dnode(F) | inode(DF) | |
263 | * For this case, we should not give up now. | |
264 | */ | |
4b2414d0 CY |
265 | entry = add_fsync_inode(sbi, head, ino_of_node(page), |
266 | quota_inode); | |
f4702d61 JK |
267 | if (IS_ERR(entry)) { |
268 | err = PTR_ERR(entry); | |
8fbc418f JK |
269 | if (err == -ENOENT) { |
270 | err = 0; | |
441ac5cb | 271 | goto next; |
8fbc418f | 272 | } |
f356fe0c | 273 | break; |
d624c96f | 274 | } |
d624c96f | 275 | } |
addbe45b JK |
276 | entry->blkaddr = blkaddr; |
277 | ||
608514de JK |
278 | if (IS_INODE(page) && is_dent_dnode(page)) |
279 | entry->last_dentry = blkaddr; | |
d624c96f JK |
280 | next: |
281 | /* check next segment */ | |
282 | blkaddr = next_blkaddr_of_node(page); | |
4c521f49 | 283 | f2fs_put_page(page, 1); |
635aee1f CY |
284 | |
285 | ra_meta_pages_cond(sbi, blkaddr); | |
d624c96f | 286 | } |
4c521f49 | 287 | f2fs_put_page(page, 1); |
d624c96f JK |
288 | return err; |
289 | } | |
290 | ||
5ebefc5b | 291 | static void destroy_fsync_dnodes(struct list_head *head) |
d624c96f | 292 | { |
d8b79b2f DC |
293 | struct fsync_inode_entry *entry, *tmp; |
294 | ||
3f8ab270 CY |
295 | list_for_each_entry_safe(entry, tmp, head, list) |
296 | del_fsync_inode(entry); | |
d624c96f JK |
297 | } |
298 | ||
39cf72cf | 299 | static int check_index_in_prev_nodes(struct f2fs_sb_info *sbi, |
b292dcab | 300 | block_t blkaddr, struct dnode_of_data *dn) |
d624c96f JK |
301 | { |
302 | struct seg_entry *sentry; | |
303 | unsigned int segno = GET_SEGNO(sbi, blkaddr); | |
491c0854 | 304 | unsigned short blkoff = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); |
f6517cfc | 305 | struct f2fs_summary_block *sum_node; |
d624c96f | 306 | struct f2fs_summary sum; |
f6517cfc | 307 | struct page *sum_page, *node_page; |
c9ef4810 | 308 | struct dnode_of_data tdn = *dn; |
b292dcab | 309 | nid_t ino, nid; |
d624c96f | 310 | struct inode *inode; |
de93653f | 311 | unsigned int offset; |
d624c96f JK |
312 | block_t bidx; |
313 | int i; | |
314 | ||
315 | sentry = get_seg_entry(sbi, segno); | |
316 | if (!f2fs_test_bit(blkoff, sentry->cur_valid_map)) | |
39cf72cf | 317 | return 0; |
d624c96f JK |
318 | |
319 | /* Get the previous summary */ | |
125c9fb1 | 320 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { |
d624c96f JK |
321 | struct curseg_info *curseg = CURSEG_I(sbi, i); |
322 | if (curseg->segno == segno) { | |
323 | sum = curseg->sum_blk->entries[blkoff]; | |
f6517cfc | 324 | goto got_it; |
d624c96f JK |
325 | } |
326 | } | |
d624c96f | 327 | |
f6517cfc JK |
328 | sum_page = get_sum_page(sbi, segno); |
329 | sum_node = (struct f2fs_summary_block *)page_address(sum_page); | |
330 | sum = sum_node->entries[blkoff]; | |
331 | f2fs_put_page(sum_page, 1); | |
332 | got_it: | |
b292dcab JK |
333 | /* Use the locked dnode page and inode */ |
334 | nid = le32_to_cpu(sum.nid); | |
335 | if (dn->inode->i_ino == nid) { | |
b292dcab | 336 | tdn.nid = nid; |
c9ef4810 JK |
337 | if (!dn->inode_page_locked) |
338 | lock_page(dn->inode_page); | |
b292dcab | 339 | tdn.node_page = dn->inode_page; |
060dd67b | 340 | tdn.ofs_in_node = le16_to_cpu(sum.ofs_in_node); |
c9ef4810 | 341 | goto truncate_out; |
b292dcab | 342 | } else if (dn->nid == nid) { |
060dd67b | 343 | tdn.ofs_in_node = le16_to_cpu(sum.ofs_in_node); |
c9ef4810 | 344 | goto truncate_out; |
b292dcab JK |
345 | } |
346 | ||
d624c96f | 347 | /* Get the node page */ |
b292dcab | 348 | node_page = get_node_page(sbi, nid); |
39cf72cf JK |
349 | if (IS_ERR(node_page)) |
350 | return PTR_ERR(node_page); | |
de93653f JK |
351 | |
352 | offset = ofs_of_node(node_page); | |
d624c96f JK |
353 | ino = ino_of_node(node_page); |
354 | f2fs_put_page(node_page, 1); | |
355 | ||
60979115 | 356 | if (ino != dn->inode->i_ino) { |
4b2414d0 CY |
357 | int ret; |
358 | ||
60979115 | 359 | /* Deallocate previous index in the node page */ |
e8ea9b3d | 360 | inode = f2fs_iget_retry(sbi->sb, ino); |
60979115 JK |
361 | if (IS_ERR(inode)) |
362 | return PTR_ERR(inode); | |
4b2414d0 CY |
363 | |
364 | ret = dquot_initialize(inode); | |
365 | if (ret) { | |
366 | iput(inode); | |
367 | return ret; | |
368 | } | |
60979115 JK |
369 | } else { |
370 | inode = dn->inode; | |
371 | } | |
06025f4d | 372 | |
81ca7350 | 373 | bidx = start_bidx_of_node(offset, inode) + le16_to_cpu(sum.ofs_in_node); |
de93653f | 374 | |
c9ef4810 JK |
375 | /* |
376 | * if inode page is locked, unlock temporarily, but its reference | |
377 | * count keeps alive. | |
378 | */ | |
379 | if (ino == dn->inode->i_ino && dn->inode_page_locked) | |
380 | unlock_page(dn->inode_page); | |
381 | ||
382 | set_new_dnode(&tdn, inode, NULL, NULL, 0); | |
383 | if (get_dnode_of_data(&tdn, bidx, LOOKUP_NODE)) | |
384 | goto out; | |
385 | ||
386 | if (tdn.data_blkaddr == blkaddr) | |
387 | truncate_data_blocks_range(&tdn, 1); | |
388 | ||
389 | f2fs_put_dnode(&tdn); | |
390 | out: | |
391 | if (ino != dn->inode->i_ino) | |
60979115 | 392 | iput(inode); |
c9ef4810 JK |
393 | else if (dn->inode_page_locked) |
394 | lock_page(dn->inode_page); | |
395 | return 0; | |
396 | ||
397 | truncate_out: | |
7a2af766 CY |
398 | if (datablock_addr(tdn.inode, tdn.node_page, |
399 | tdn.ofs_in_node) == blkaddr) | |
c9ef4810 JK |
400 | truncate_data_blocks_range(&tdn, 1); |
401 | if (dn->inode->i_ino == nid && !dn->inode_page_locked) | |
402 | unlock_page(dn->inode_page); | |
39cf72cf | 403 | return 0; |
d624c96f JK |
404 | } |
405 | ||
6ead1142 | 406 | static int do_recover_data(struct f2fs_sb_info *sbi, struct inode *inode, |
d624c96f JK |
407 | struct page *page, block_t blkaddr) |
408 | { | |
d624c96f | 409 | struct dnode_of_data dn; |
d624c96f | 410 | struct node_info ni; |
81ca7350 | 411 | unsigned int start, end; |
f356fe0c | 412 | int err = 0, recovered = 0; |
d624c96f | 413 | |
1c35a90e JK |
414 | /* step 1: recover xattr */ |
415 | if (IS_INODE(page)) { | |
416 | recover_inline_xattr(inode, page); | |
417 | } else if (f2fs_has_xattr_block(ofs_of_node(page))) { | |
d260081c CY |
418 | err = recover_xattr_data(inode, page, blkaddr); |
419 | if (!err) | |
420 | recovered++; | |
1e1bb4ba | 421 | goto out; |
1c35a90e | 422 | } |
1e1bb4ba | 423 | |
1c35a90e JK |
424 | /* step 2: recover inline data */ |
425 | if (recover_inline_data(inode, page)) | |
abb2366c JK |
426 | goto out; |
427 | ||
1c35a90e | 428 | /* step 3: recover data indices */ |
81ca7350 CY |
429 | start = start_bidx_of_node(ofs_of_node(page), inode); |
430 | end = start + ADDRS_PER_PAGE(page, inode); | |
d624c96f JK |
431 | |
432 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
e8ea9b3d | 433 | retry_dn: |
6ead1142 | 434 | err = get_dnode_of_data(&dn, start, ALLOC_NODE); |
e8ea9b3d JK |
435 | if (err) { |
436 | if (err == -ENOMEM) { | |
437 | congestion_wait(BLK_RW_ASYNC, HZ/50); | |
438 | goto retry_dn; | |
439 | } | |
1e1bb4ba | 440 | goto out; |
e8ea9b3d | 441 | } |
d624c96f | 442 | |
fec1d657 | 443 | f2fs_wait_on_page_writeback(dn.node_page, NODE, true); |
d624c96f JK |
444 | |
445 | get_node_info(sbi, dn.nid, &ni); | |
9850cf4a JK |
446 | f2fs_bug_on(sbi, ni.ino != ino_of_node(page)); |
447 | f2fs_bug_on(sbi, ofs_of_node(dn.node_page) != ofs_of_node(page)); | |
d624c96f | 448 | |
12a8343e | 449 | for (; start < end; start++, dn.ofs_in_node++) { |
d624c96f JK |
450 | block_t src, dest; |
451 | ||
7a2af766 CY |
452 | src = datablock_addr(dn.inode, dn.node_page, dn.ofs_in_node); |
453 | dest = datablock_addr(dn.inode, page, dn.ofs_in_node); | |
d624c96f | 454 | |
12a8343e CY |
455 | /* skip recovering if dest is the same as src */ |
456 | if (src == dest) | |
457 | continue; | |
458 | ||
459 | /* dest is invalid, just invalidate src block */ | |
460 | if (dest == NULL_ADDR) { | |
461 | truncate_data_blocks_range(&dn, 1); | |
462 | continue; | |
463 | } | |
464 | ||
26787236 | 465 | if (!file_keep_isize(inode) && |
dba79f38 CY |
466 | (i_size_read(inode) <= ((loff_t)start << PAGE_SHIFT))) |
467 | f2fs_i_size_write(inode, | |
468 | (loff_t)(start + 1) << PAGE_SHIFT); | |
26de9b11 | 469 | |
12a8343e CY |
470 | /* |
471 | * dest is reserved block, invalidate src block | |
472 | * and then reserve one new block in dnode page. | |
473 | */ | |
474 | if (dest == NEW_ADDR) { | |
475 | truncate_data_blocks_range(&dn, 1); | |
3b9b10f9 | 476 | reserve_new_block(&dn); |
12a8343e CY |
477 | continue; |
478 | } | |
479 | ||
480 | /* dest is valid block, try to recover from src to dest */ | |
481 | if (is_valid_blkaddr(sbi, dest, META_POR)) { | |
e03b07d9 | 482 | |
d624c96f | 483 | if (src == NULL_ADDR) { |
5d56b671 | 484 | err = reserve_new_block(&dn); |
975756c4 JK |
485 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
486 | while (err) | |
487 | err = reserve_new_block(&dn); | |
488 | #endif | |
d624c96f | 489 | /* We should not get -ENOSPC */ |
9850cf4a | 490 | f2fs_bug_on(sbi, err); |
6f3ec995 JK |
491 | if (err) |
492 | goto err; | |
d624c96f | 493 | } |
e8ea9b3d | 494 | retry_prev: |
d624c96f | 495 | /* Check the previous node page having this index */ |
39cf72cf | 496 | err = check_index_in_prev_nodes(sbi, dest, &dn); |
e8ea9b3d JK |
497 | if (err) { |
498 | if (err == -ENOMEM) { | |
499 | congestion_wait(BLK_RW_ASYNC, HZ/50); | |
500 | goto retry_prev; | |
501 | } | |
39cf72cf | 502 | goto err; |
e8ea9b3d | 503 | } |
d624c96f | 504 | |
d624c96f | 505 | /* write dummy data page */ |
528e3459 | 506 | f2fs_replace_block(sbi, &dn, src, dest, |
28bc106b | 507 | ni.version, false, false); |
f356fe0c | 508 | recovered++; |
d624c96f | 509 | } |
d624c96f JK |
510 | } |
511 | ||
d624c96f JK |
512 | copy_node_footer(dn.node_page, page); |
513 | fill_node_footer(dn.node_page, dn.nid, ni.ino, | |
514 | ofs_of_node(page), false); | |
515 | set_page_dirty(dn.node_page); | |
39cf72cf | 516 | err: |
d624c96f | 517 | f2fs_put_dnode(&dn); |
1e1bb4ba | 518 | out: |
6c311ec6 | 519 | f2fs_msg(sbi->sb, KERN_NOTICE, |
26787236 JK |
520 | "recover_data: ino = %lx (i_size: %s) recovered = %d, err = %d", |
521 | inode->i_ino, | |
522 | file_keep_isize(inode) ? "keep" : "recover", | |
523 | recovered, err); | |
39cf72cf | 524 | return err; |
d624c96f JK |
525 | } |
526 | ||
f61cce5b CY |
527 | static int recover_data(struct f2fs_sb_info *sbi, struct list_head *inode_list, |
528 | struct list_head *dir_list) | |
d624c96f | 529 | { |
d624c96f | 530 | struct curseg_info *curseg; |
4c521f49 | 531 | struct page *page = NULL; |
6ead1142 | 532 | int err = 0; |
d624c96f JK |
533 | block_t blkaddr; |
534 | ||
535 | /* get node pages in the current segment */ | |
b7973f23 | 536 | curseg = CURSEG_I(sbi, CURSEG_WARM_NODE); |
d624c96f JK |
537 | blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); |
538 | ||
d624c96f JK |
539 | while (1) { |
540 | struct fsync_inode_entry *entry; | |
541 | ||
f0c9cada | 542 | if (!is_valid_blkaddr(sbi, blkaddr, META_POR)) |
4c521f49 | 543 | break; |
d624c96f | 544 | |
635aee1f CY |
545 | ra_meta_pages_cond(sbi, blkaddr); |
546 | ||
2b947003 | 547 | page = get_tmp_page(sbi, blkaddr); |
393ff91f | 548 | |
a468f0ef | 549 | if (!is_recoverable_dnode(page)) { |
4c521f49 | 550 | f2fs_put_page(page, 1); |
45856aff | 551 | break; |
4c521f49 | 552 | } |
d624c96f | 553 | |
f61cce5b | 554 | entry = get_fsync_inode(inode_list, ino_of_node(page)); |
d624c96f JK |
555 | if (!entry) |
556 | goto next; | |
441ac5cb JK |
557 | /* |
558 | * inode(x) | CP | inode(x) | dnode(F) | |
559 | * In this case, we can lose the latest inode(x). | |
c52e1b10 | 560 | * So, call recover_inode for the inode update. |
441ac5cb | 561 | */ |
608514de | 562 | if (IS_INODE(page)) |
c52e1b10 JK |
563 | recover_inode(entry->inode, page); |
564 | if (entry->last_dentry == blkaddr) { | |
f61cce5b | 565 | err = recover_dentry(entry->inode, page, dir_list); |
c52e1b10 JK |
566 | if (err) { |
567 | f2fs_put_page(page, 1); | |
568 | break; | |
569 | } | |
570 | } | |
6ead1142 | 571 | err = do_recover_data(sbi, entry->inode, page, blkaddr); |
4c521f49 JK |
572 | if (err) { |
573 | f2fs_put_page(page, 1); | |
45856aff | 574 | break; |
4c521f49 | 575 | } |
d624c96f | 576 | |
3f8ab270 CY |
577 | if (entry->blkaddr == blkaddr) |
578 | del_fsync_inode(entry); | |
d624c96f JK |
579 | next: |
580 | /* check next segment */ | |
581 | blkaddr = next_blkaddr_of_node(page); | |
4c521f49 | 582 | f2fs_put_page(page, 1); |
d624c96f | 583 | } |
6ead1142 JK |
584 | if (!err) |
585 | allocate_new_segments(sbi); | |
586 | return err; | |
d624c96f JK |
587 | } |
588 | ||
6781eabb | 589 | int recover_fsync_data(struct f2fs_sb_info *sbi, bool check_only) |
d624c96f JK |
590 | { |
591 | struct list_head inode_list; | |
f61cce5b | 592 | struct list_head dir_list; |
6ead1142 | 593 | int err; |
6781eabb | 594 | int ret = 0; |
4b2414d0 | 595 | unsigned long s_flags = sbi->sb->s_flags; |
aabe5136 | 596 | bool need_writecp = false; |
ea676733 JK |
597 | #ifdef CONFIG_QUOTA |
598 | int quota_enabled; | |
599 | #endif | |
d624c96f | 600 | |
1751e8a6 | 601 | if (s_flags & SB_RDONLY) { |
4b2414d0 | 602 | f2fs_msg(sbi->sb, KERN_INFO, "orphan cleanup on readonly fs"); |
1751e8a6 | 603 | sbi->sb->s_flags &= ~SB_RDONLY; |
4b2414d0 CY |
604 | } |
605 | ||
606 | #ifdef CONFIG_QUOTA | |
607 | /* Needed for iput() to work correctly and not trash data */ | |
1751e8a6 | 608 | sbi->sb->s_flags |= SB_ACTIVE; |
4b2414d0 | 609 | /* Turn on quotas so that they are updated correctly */ |
1751e8a6 | 610 | quota_enabled = f2fs_enable_quota_files(sbi, s_flags & SB_RDONLY); |
4b2414d0 CY |
611 | #endif |
612 | ||
d624c96f | 613 | fsync_entry_slab = f2fs_kmem_cache_create("f2fs_fsync_inode_entry", |
e8512d2e | 614 | sizeof(struct fsync_inode_entry)); |
4b2414d0 CY |
615 | if (!fsync_entry_slab) { |
616 | err = -ENOMEM; | |
617 | goto out; | |
618 | } | |
d624c96f JK |
619 | |
620 | INIT_LIST_HEAD(&inode_list); | |
f61cce5b | 621 | INIT_LIST_HEAD(&dir_list); |
d624c96f | 622 | |
14f4e690 JK |
623 | /* prevent checkpoint */ |
624 | mutex_lock(&sbi->cp_mutex); | |
625 | ||
315df839 | 626 | /* step #1: find fsynced inode numbers */ |
d40d30c5 | 627 | err = find_fsync_dnodes(sbi, &inode_list, check_only); |
6781eabb | 628 | if (err || list_empty(&inode_list)) |
4b2414d0 | 629 | goto skip; |
d624c96f | 630 | |
6781eabb JK |
631 | if (check_only) { |
632 | ret = 1; | |
4b2414d0 | 633 | goto skip; |
6781eabb | 634 | } |
d624c96f | 635 | |
aabe5136 | 636 | need_writecp = true; |
691c6fd2 | 637 | |
d624c96f | 638 | /* step #2: recover data */ |
f61cce5b | 639 | err = recover_data(sbi, &inode_list, &dir_list); |
b307384e | 640 | if (!err) |
9850cf4a | 641 | f2fs_bug_on(sbi, !list_empty(&inode_list)); |
4b2414d0 | 642 | skip: |
5ebefc5b | 643 | destroy_fsync_dnodes(&inode_list); |
cf2271e7 | 644 | |
4c521f49 JK |
645 | /* truncate meta pages to be used by the recovery */ |
646 | truncate_inode_pages_range(META_MAPPING(sbi), | |
09cbfeaf | 647 | (loff_t)MAIN_BLKADDR(sbi) << PAGE_SHIFT, -1); |
4c521f49 | 648 | |
cf2271e7 JK |
649 | if (err) { |
650 | truncate_inode_pages_final(NODE_MAPPING(sbi)); | |
651 | truncate_inode_pages_final(META_MAPPING(sbi)); | |
652 | } | |
653 | ||
caf0047e | 654 | clear_sbi_flag(sbi, SBI_POR_DOING); |
a468f0ef JK |
655 | mutex_unlock(&sbi->cp_mutex); |
656 | ||
9e1e6df4 JK |
657 | /* let's drop all the directory inodes for clean checkpoint */ |
658 | destroy_fsync_dnodes(&dir_list); | |
659 | ||
a468f0ef | 660 | if (!err && need_writecp) { |
75ab4cb8 | 661 | struct cp_control cpc = { |
10027551 | 662 | .reason = CP_RECOVERY, |
75ab4cb8 | 663 | }; |
c34f42e2 | 664 | err = write_checkpoint(sbi, &cpc); |
cf2271e7 | 665 | } |
f61cce5b | 666 | |
f61cce5b | 667 | kmem_cache_destroy(fsync_entry_slab); |
4b2414d0 CY |
668 | out: |
669 | #ifdef CONFIG_QUOTA | |
670 | /* Turn quotas off */ | |
ea676733 JK |
671 | if (quota_enabled) |
672 | f2fs_quota_off_umount(sbi->sb); | |
4b2414d0 | 673 | #endif |
1751e8a6 | 674 | sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */ |
4b2414d0 | 675 | |
6781eabb | 676 | return ret ? ret: err; |
d624c96f | 677 | } |