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); | |
695facc0 JK |
96 | if (de && inode->i_ino == le32_to_cpu(de->ino)) { |
97 | clear_inode_flag(F2FS_I(inode), FI_INC_LINK); | |
2e5558f4 | 98 | goto out_unmap_put; |
695facc0 | 99 | } |
6b8213d9 JK |
100 | if (de) { |
101 | einode = f2fs_iget(inode->i_sb, le32_to_cpu(de->ino)); | |
102 | if (IS_ERR(einode)) { | |
103 | WARN_ON(1); | |
5c1f9927 CY |
104 | err = PTR_ERR(einode); |
105 | if (err == -ENOENT) | |
6b8213d9 | 106 | err = -EEXIST; |
2e5558f4 RK |
107 | goto out_unmap_put; |
108 | } | |
4081363f | 109 | err = acquire_orphan_inode(F2FS_I_SB(inode)); |
2e5558f4 RK |
110 | if (err) { |
111 | iput(einode); | |
112 | goto out_unmap_put; | |
6b8213d9 JK |
113 | } |
114 | f2fs_delete_entry(de, page, einode); | |
115 | iput(einode); | |
116 | goto retry; | |
d624c96f | 117 | } |
6b8213d9 | 118 | err = __f2fs_add_link(dir, &name, inode); |
86928f98 JK |
119 | if (err) |
120 | goto out_err; | |
121 | ||
122 | if (is_inode_flag_set(F2FS_I(dir), FI_DELAY_IPUT)) { | |
123 | iput(dir); | |
124 | } else { | |
125 | add_dirty_dir_inode(dir); | |
126 | set_inode_flag(F2FS_I(dir), FI_DELAY_IPUT); | |
127 | } | |
128 | ||
2e5558f4 RK |
129 | goto out; |
130 | ||
131 | out_unmap_put: | |
132 | kunmap(page); | |
133 | f2fs_put_page(page, 0); | |
86928f98 JK |
134 | out_err: |
135 | iput(dir); | |
d624c96f | 136 | out: |
6c311ec6 CF |
137 | f2fs_msg(inode->i_sb, KERN_NOTICE, |
138 | "%s: ino = %x, name = %s, dir = %lx, err = %d", | |
139 | __func__, ino_of_node(ipage), raw_inode->i_name, | |
f28c06fa | 140 | IS_ERR(dir) ? 0 : dir->i_ino, err); |
d624c96f JK |
141 | return err; |
142 | } | |
143 | ||
c52e1b10 | 144 | static void recover_inode(struct inode *inode, struct page *page) |
d624c96f | 145 | { |
441ac5cb JK |
146 | struct f2fs_inode *raw = F2FS_INODE(page); |
147 | ||
148 | inode->i_mode = le16_to_cpu(raw->i_mode); | |
149 | i_size_write(inode, le64_to_cpu(raw->i_size)); | |
150 | inode->i_atime.tv_sec = le64_to_cpu(raw->i_mtime); | |
151 | inode->i_ctime.tv_sec = le64_to_cpu(raw->i_ctime); | |
152 | inode->i_mtime.tv_sec = le64_to_cpu(raw->i_mtime); | |
153 | inode->i_atime.tv_nsec = le32_to_cpu(raw->i_mtime_nsec); | |
154 | inode->i_ctime.tv_nsec = le32_to_cpu(raw->i_ctime_nsec); | |
155 | inode->i_mtime.tv_nsec = le32_to_cpu(raw->i_mtime_nsec); | |
f356fe0c JK |
156 | |
157 | f2fs_msg(inode->i_sb, KERN_NOTICE, "recover_inode: ino = %x, name = %s", | |
c52e1b10 | 158 | ino_of_node(page), F2FS_INODE(page)->i_name); |
d624c96f JK |
159 | } |
160 | ||
161 | static int find_fsync_dnodes(struct f2fs_sb_info *sbi, struct list_head *head) | |
162 | { | |
d71b5564 | 163 | unsigned long long cp_ver = cur_cp_version(F2FS_CKPT(sbi)); |
d624c96f | 164 | struct curseg_info *curseg; |
4c521f49 | 165 | struct page *page = NULL; |
d624c96f JK |
166 | block_t blkaddr; |
167 | int err = 0; | |
168 | ||
169 | /* get node pages in the current segment */ | |
170 | curseg = CURSEG_I(sbi, CURSEG_WARM_NODE); | |
695fd1ed | 171 | blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); |
d624c96f | 172 | |
d624c96f JK |
173 | while (1) { |
174 | struct fsync_inode_entry *entry; | |
175 | ||
4c521f49 JK |
176 | if (blkaddr < SM_I(sbi)->main_blkaddr || |
177 | blkaddr >= (SM_I(sbi)->seg0_blkaddr + TOTAL_BLKS(sbi))) | |
178 | return 0; | |
d624c96f | 179 | |
4c521f49 | 180 | page = get_meta_page_ra(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)); | |
189 | if (entry) { | |
d624c96f JK |
190 | if (IS_INODE(page) && is_dent_dnode(page)) |
191 | set_inode_flag(F2FS_I(entry->inode), | |
192 | FI_INC_LINK); | |
193 | } else { | |
194 | if (IS_INODE(page) && is_dent_dnode(page)) { | |
6ead1142 JK |
195 | err = recover_inode_page(sbi, page); |
196 | if (err) | |
f356fe0c | 197 | break; |
d624c96f JK |
198 | } |
199 | ||
200 | /* add this fsync inode to the list */ | |
c52e1b10 | 201 | entry = kmem_cache_alloc(fsync_entry_slab, GFP_F2FS_ZERO); |
d624c96f JK |
202 | if (!entry) { |
203 | err = -ENOMEM; | |
f356fe0c | 204 | break; |
d624c96f | 205 | } |
441ac5cb JK |
206 | /* |
207 | * CP | dnode(F) | inode(DF) | |
208 | * For this case, we should not give up now. | |
209 | */ | |
d624c96f JK |
210 | entry->inode = f2fs_iget(sbi->sb, ino_of_node(page)); |
211 | if (IS_ERR(entry->inode)) { | |
212 | err = PTR_ERR(entry->inode); | |
fd8bb65f | 213 | kmem_cache_free(fsync_entry_slab, entry); |
441ac5cb JK |
214 | if (err == -ENOENT) |
215 | goto next; | |
f356fe0c | 216 | break; |
d624c96f | 217 | } |
fd8bb65f | 218 | list_add_tail(&entry->list, head); |
d624c96f | 219 | } |
addbe45b JK |
220 | entry->blkaddr = blkaddr; |
221 | ||
c52e1b10 JK |
222 | if (IS_INODE(page)) { |
223 | entry->last_inode = blkaddr; | |
224 | if (is_dent_dnode(page)) | |
225 | entry->last_dentry = blkaddr; | |
226 | } | |
d624c96f JK |
227 | next: |
228 | /* check next segment */ | |
229 | blkaddr = next_blkaddr_of_node(page); | |
4c521f49 | 230 | f2fs_put_page(page, 1); |
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; |
b292dcab | 256 | nid_t ino, nid; |
d624c96f | 257 | struct inode *inode; |
de93653f | 258 | unsigned int offset; |
d624c96f JK |
259 | block_t bidx; |
260 | int i; | |
261 | ||
262 | sentry = get_seg_entry(sbi, segno); | |
263 | if (!f2fs_test_bit(blkoff, sentry->cur_valid_map)) | |
39cf72cf | 264 | return 0; |
d624c96f JK |
265 | |
266 | /* Get the previous summary */ | |
267 | for (i = CURSEG_WARM_DATA; i <= CURSEG_COLD_DATA; i++) { | |
268 | struct curseg_info *curseg = CURSEG_I(sbi, i); | |
269 | if (curseg->segno == segno) { | |
270 | sum = curseg->sum_blk->entries[blkoff]; | |
f6517cfc | 271 | goto got_it; |
d624c96f JK |
272 | } |
273 | } | |
d624c96f | 274 | |
f6517cfc JK |
275 | sum_page = get_sum_page(sbi, segno); |
276 | sum_node = (struct f2fs_summary_block *)page_address(sum_page); | |
277 | sum = sum_node->entries[blkoff]; | |
278 | f2fs_put_page(sum_page, 1); | |
279 | got_it: | |
b292dcab JK |
280 | /* Use the locked dnode page and inode */ |
281 | nid = le32_to_cpu(sum.nid); | |
282 | if (dn->inode->i_ino == nid) { | |
283 | struct dnode_of_data tdn = *dn; | |
284 | tdn.nid = nid; | |
285 | tdn.node_page = dn->inode_page; | |
060dd67b | 286 | tdn.ofs_in_node = le16_to_cpu(sum.ofs_in_node); |
b292dcab | 287 | truncate_data_blocks_range(&tdn, 1); |
39cf72cf | 288 | return 0; |
b292dcab JK |
289 | } else if (dn->nid == nid) { |
290 | struct dnode_of_data tdn = *dn; | |
060dd67b | 291 | tdn.ofs_in_node = le16_to_cpu(sum.ofs_in_node); |
b292dcab | 292 | truncate_data_blocks_range(&tdn, 1); |
39cf72cf | 293 | return 0; |
b292dcab JK |
294 | } |
295 | ||
d624c96f | 296 | /* Get the node page */ |
b292dcab | 297 | node_page = get_node_page(sbi, nid); |
39cf72cf JK |
298 | if (IS_ERR(node_page)) |
299 | return PTR_ERR(node_page); | |
de93653f JK |
300 | |
301 | offset = ofs_of_node(node_page); | |
d624c96f JK |
302 | ino = ino_of_node(node_page); |
303 | f2fs_put_page(node_page, 1); | |
304 | ||
60979115 JK |
305 | if (ino != dn->inode->i_ino) { |
306 | /* Deallocate previous index in the node page */ | |
307 | inode = f2fs_iget(sbi->sb, ino); | |
308 | if (IS_ERR(inode)) | |
309 | return PTR_ERR(inode); | |
310 | } else { | |
311 | inode = dn->inode; | |
312 | } | |
06025f4d | 313 | |
de93653f | 314 | bidx = start_bidx_of_node(offset, F2FS_I(inode)) + |
60979115 | 315 | le16_to_cpu(sum.ofs_in_node); |
de93653f | 316 | |
60979115 JK |
317 | if (ino != dn->inode->i_ino) { |
318 | truncate_hole(inode, bidx, bidx + 1); | |
319 | iput(inode); | |
320 | } else { | |
321 | struct dnode_of_data tdn; | |
322 | set_new_dnode(&tdn, inode, dn->inode_page, NULL, 0); | |
323 | if (get_dnode_of_data(&tdn, bidx, LOOKUP_NODE)) | |
324 | return 0; | |
325 | if (tdn.data_blkaddr != NULL_ADDR) | |
326 | truncate_data_blocks_range(&tdn, 1); | |
327 | f2fs_put_page(tdn.node_page, 1); | |
328 | } | |
39cf72cf | 329 | return 0; |
d624c96f JK |
330 | } |
331 | ||
6ead1142 | 332 | static int do_recover_data(struct f2fs_sb_info *sbi, struct inode *inode, |
d624c96f JK |
333 | struct page *page, block_t blkaddr) |
334 | { | |
de93653f | 335 | struct f2fs_inode_info *fi = F2FS_I(inode); |
d624c96f JK |
336 | unsigned int start, end; |
337 | struct dnode_of_data dn; | |
338 | struct f2fs_summary sum; | |
339 | struct node_info ni; | |
f356fe0c | 340 | int err = 0, recovered = 0; |
d624c96f | 341 | |
1c35a90e JK |
342 | /* step 1: recover xattr */ |
343 | if (IS_INODE(page)) { | |
344 | recover_inline_xattr(inode, page); | |
345 | } else if (f2fs_has_xattr_block(ofs_of_node(page))) { | |
346 | recover_xattr_data(inode, page, blkaddr); | |
1e1bb4ba | 347 | goto out; |
1c35a90e | 348 | } |
1e1bb4ba | 349 | |
1c35a90e JK |
350 | /* step 2: recover inline data */ |
351 | if (recover_inline_data(inode, page)) | |
abb2366c JK |
352 | goto out; |
353 | ||
1c35a90e | 354 | /* step 3: recover data indices */ |
de93653f | 355 | start = start_bidx_of_node(ofs_of_node(page), fi); |
6403eb1f | 356 | end = start + ADDRS_PER_PAGE(page, fi); |
d624c96f | 357 | |
e479556b | 358 | f2fs_lock_op(sbi); |
1e1bb4ba | 359 | |
d624c96f | 360 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
39936837 | 361 | |
6ead1142 | 362 | err = get_dnode_of_data(&dn, start, ALLOC_NODE); |
39936837 | 363 | if (err) { |
e479556b | 364 | f2fs_unlock_op(sbi); |
1e1bb4ba | 365 | goto out; |
39936837 | 366 | } |
d624c96f | 367 | |
3cb5ad15 | 368 | f2fs_wait_on_page_writeback(dn.node_page, NODE); |
d624c96f JK |
369 | |
370 | get_node_info(sbi, dn.nid, &ni); | |
9850cf4a JK |
371 | f2fs_bug_on(sbi, ni.ino != ino_of_node(page)); |
372 | f2fs_bug_on(sbi, ofs_of_node(dn.node_page) != ofs_of_node(page)); | |
d624c96f JK |
373 | |
374 | for (; start < end; start++) { | |
375 | block_t src, dest; | |
376 | ||
377 | src = datablock_addr(dn.node_page, dn.ofs_in_node); | |
378 | dest = datablock_addr(page, dn.ofs_in_node); | |
379 | ||
380 | if (src != dest && dest != NEW_ADDR && dest != NULL_ADDR) { | |
381 | if (src == NULL_ADDR) { | |
5d56b671 | 382 | err = reserve_new_block(&dn); |
d624c96f | 383 | /* We should not get -ENOSPC */ |
9850cf4a | 384 | f2fs_bug_on(sbi, err); |
d624c96f JK |
385 | } |
386 | ||
387 | /* Check the previous node page having this index */ | |
39cf72cf JK |
388 | err = check_index_in_prev_nodes(sbi, dest, &dn); |
389 | if (err) | |
390 | goto err; | |
d624c96f JK |
391 | |
392 | set_summary(&sum, dn.nid, dn.ofs_in_node, ni.version); | |
393 | ||
394 | /* write dummy data page */ | |
395 | recover_data_page(sbi, NULL, &sum, src, dest); | |
396 | update_extent_cache(dest, &dn); | |
f356fe0c | 397 | recovered++; |
d624c96f JK |
398 | } |
399 | dn.ofs_in_node++; | |
400 | } | |
401 | ||
402 | /* write node page in place */ | |
403 | set_summary(&sum, dn.nid, 0, 0); | |
404 | if (IS_INODE(dn.node_page)) | |
405 | sync_inode_page(&dn); | |
406 | ||
407 | copy_node_footer(dn.node_page, page); | |
408 | fill_node_footer(dn.node_page, dn.nid, ni.ino, | |
409 | ofs_of_node(page), false); | |
410 | set_page_dirty(dn.node_page); | |
39cf72cf | 411 | err: |
d624c96f | 412 | f2fs_put_dnode(&dn); |
e479556b | 413 | f2fs_unlock_op(sbi); |
1e1bb4ba | 414 | out: |
6c311ec6 CF |
415 | f2fs_msg(sbi->sb, KERN_NOTICE, |
416 | "recover_data: ino = %lx, recovered = %d blocks, err = %d", | |
417 | inode->i_ino, recovered, err); | |
39cf72cf | 418 | return err; |
d624c96f JK |
419 | } |
420 | ||
6ead1142 | 421 | static int recover_data(struct f2fs_sb_info *sbi, |
d624c96f JK |
422 | struct list_head *head, int type) |
423 | { | |
d71b5564 | 424 | unsigned long long cp_ver = cur_cp_version(F2FS_CKPT(sbi)); |
d624c96f | 425 | struct curseg_info *curseg; |
4c521f49 | 426 | struct page *page = NULL; |
6ead1142 | 427 | int err = 0; |
d624c96f JK |
428 | block_t blkaddr; |
429 | ||
430 | /* get node pages in the current segment */ | |
431 | curseg = CURSEG_I(sbi, type); | |
432 | blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); | |
433 | ||
d624c96f JK |
434 | while (1) { |
435 | struct fsync_inode_entry *entry; | |
436 | ||
4c521f49 JK |
437 | if (blkaddr < SM_I(sbi)->main_blkaddr || |
438 | blkaddr >= (SM_I(sbi)->seg0_blkaddr + TOTAL_BLKS(sbi))) | |
439 | break; | |
d624c96f | 440 | |
4c521f49 | 441 | page = get_meta_page_ra(sbi, blkaddr); |
393ff91f | 442 | |
4c521f49 JK |
443 | if (cp_ver != cpver_of_node(page)) { |
444 | f2fs_put_page(page, 1); | |
45856aff | 445 | break; |
4c521f49 | 446 | } |
d624c96f JK |
447 | |
448 | entry = get_fsync_inode(head, ino_of_node(page)); | |
449 | if (!entry) | |
450 | goto next; | |
441ac5cb JK |
451 | /* |
452 | * inode(x) | CP | inode(x) | dnode(F) | |
453 | * In this case, we can lose the latest inode(x). | |
c52e1b10 | 454 | * So, call recover_inode for the inode update. |
441ac5cb | 455 | */ |
c52e1b10 JK |
456 | if (entry->last_inode == blkaddr) |
457 | recover_inode(entry->inode, page); | |
458 | if (entry->last_dentry == blkaddr) { | |
459 | err = recover_dentry(entry->inode, page); | |
460 | if (err) { | |
461 | f2fs_put_page(page, 1); | |
462 | break; | |
463 | } | |
464 | } | |
6ead1142 | 465 | err = do_recover_data(sbi, entry->inode, page, blkaddr); |
4c521f49 JK |
466 | if (err) { |
467 | f2fs_put_page(page, 1); | |
45856aff | 468 | break; |
4c521f49 | 469 | } |
d624c96f JK |
470 | |
471 | if (entry->blkaddr == blkaddr) { | |
472 | iput(entry->inode); | |
473 | list_del(&entry->list); | |
474 | kmem_cache_free(fsync_entry_slab, entry); | |
475 | } | |
476 | next: | |
477 | /* check next segment */ | |
478 | blkaddr = next_blkaddr_of_node(page); | |
4c521f49 | 479 | f2fs_put_page(page, 1); |
d624c96f | 480 | } |
6ead1142 JK |
481 | if (!err) |
482 | allocate_new_segments(sbi); | |
483 | return err; | |
d624c96f JK |
484 | } |
485 | ||
6ead1142 | 486 | int recover_fsync_data(struct f2fs_sb_info *sbi) |
d624c96f | 487 | { |
cf2271e7 | 488 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_WARM_NODE); |
d624c96f | 489 | struct list_head inode_list; |
cf2271e7 | 490 | block_t blkaddr; |
6ead1142 | 491 | int err; |
aabe5136 | 492 | bool need_writecp = false; |
d624c96f JK |
493 | |
494 | fsync_entry_slab = f2fs_kmem_cache_create("f2fs_fsync_inode_entry", | |
e8512d2e | 495 | sizeof(struct fsync_inode_entry)); |
6bacf52f | 496 | if (!fsync_entry_slab) |
6ead1142 | 497 | return -ENOMEM; |
d624c96f JK |
498 | |
499 | INIT_LIST_HEAD(&inode_list); | |
500 | ||
501 | /* step #1: find fsynced inode numbers */ | |
aabe5136 | 502 | sbi->por_doing = true; |
cf2271e7 | 503 | |
14f4e690 JK |
504 | /* prevent checkpoint */ |
505 | mutex_lock(&sbi->cp_mutex); | |
506 | ||
cf2271e7 JK |
507 | blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); |
508 | ||
6ead1142 JK |
509 | err = find_fsync_dnodes(sbi, &inode_list); |
510 | if (err) | |
d624c96f JK |
511 | goto out; |
512 | ||
513 | if (list_empty(&inode_list)) | |
514 | goto out; | |
515 | ||
aabe5136 | 516 | need_writecp = true; |
691c6fd2 | 517 | |
d624c96f | 518 | /* step #2: recover data */ |
6ead1142 | 519 | err = recover_data(sbi, &inode_list, CURSEG_WARM_NODE); |
b307384e | 520 | if (!err) |
9850cf4a | 521 | f2fs_bug_on(sbi, !list_empty(&inode_list)); |
d624c96f | 522 | out: |
5ebefc5b | 523 | destroy_fsync_dnodes(&inode_list); |
d624c96f | 524 | kmem_cache_destroy(fsync_entry_slab); |
cf2271e7 | 525 | |
4c521f49 JK |
526 | /* truncate meta pages to be used by the recovery */ |
527 | truncate_inode_pages_range(META_MAPPING(sbi), | |
528 | SM_I(sbi)->main_blkaddr << PAGE_CACHE_SHIFT, -1); | |
529 | ||
cf2271e7 JK |
530 | if (err) { |
531 | truncate_inode_pages_final(NODE_MAPPING(sbi)); | |
532 | truncate_inode_pages_final(META_MAPPING(sbi)); | |
533 | } | |
534 | ||
aabe5136 | 535 | sbi->por_doing = false; |
cf2271e7 JK |
536 | if (err) { |
537 | discard_next_dnode(sbi, blkaddr); | |
538 | ||
539 | /* Flush all the NAT/SIT pages */ | |
540 | while (get_pages(sbi, F2FS_DIRTY_META)) | |
541 | sync_meta_pages(sbi, META, LONG_MAX); | |
14f4e690 JK |
542 | set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG); |
543 | mutex_unlock(&sbi->cp_mutex); | |
cf2271e7 | 544 | } else if (need_writecp) { |
75ab4cb8 JK |
545 | struct cp_control cpc = { |
546 | .reason = CP_SYNC, | |
547 | }; | |
14f4e690 | 548 | mutex_unlock(&sbi->cp_mutex); |
75ab4cb8 | 549 | write_checkpoint(sbi, &cpc); |
14f4e690 JK |
550 | } else { |
551 | mutex_unlock(&sbi->cp_mutex); | |
cf2271e7 | 552 | } |
6ead1142 | 553 | return err; |
d624c96f | 554 | } |