blob: fdc81161f2543a4818e371946ba691515aa9f3c4 [file] [log] [blame]
Jaegeuk Kim0a8165d2012-11-29 13:28:09 +09001/*
Jaegeuk Kimd624c962012-11-02 17:13:32 +09002 * 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
17static struct kmem_cache *fsync_entry_slab;
18
19bool space_for_roll_forward(struct f2fs_sb_info *sbi)
20{
21 if (sbi->last_valid_block_count + sbi->alloc_valid_block_count
22 > sbi->user_block_count)
23 return false;
24 return true;
25}
26
27static struct fsync_inode_entry *get_fsync_inode(struct list_head *head,
28 nid_t ino)
29{
30 struct list_head *this;
31 struct fsync_inode_entry *entry;
32
33 list_for_each(this, head) {
34 entry = list_entry(this, struct fsync_inode_entry, list);
35 if (entry->inode->i_ino == ino)
36 return entry;
37 }
38 return NULL;
39}
40
41static int recover_dentry(struct page *ipage, struct inode *inode)
42{
Gu Zheng45590712013-07-15 17:57:38 +080043 struct f2fs_node *raw_node = F2FS_NODE(ipage);
Jaegeuk Kimd624c962012-11-02 17:13:32 +090044 struct f2fs_inode *raw_inode = &(raw_node->i);
Jaegeuk Kim74d0b912013-05-15 16:40:02 +090045 nid_t pino = le32_to_cpu(raw_inode->i_pino);
Jaegeuk Kim6b8213d2013-05-28 09:19:22 +090046 struct f2fs_dir_entry *de;
Al Virob7f7a5e2013-01-25 16:15:43 -050047 struct qstr name;
Jaegeuk Kimd624c962012-11-02 17:13:32 +090048 struct page *page;
Jaegeuk Kim6b8213d2013-05-28 09:19:22 +090049 struct inode *dir, *einode;
Jaegeuk Kimd624c962012-11-02 17:13:32 +090050 int err = 0;
51
Jaegeuk Kim74d0b912013-05-15 16:40:02 +090052 dir = check_dirty_dir_inode(F2FS_SB(inode->i_sb), pino);
53 if (!dir) {
54 dir = f2fs_iget(inode->i_sb, pino);
55 if (IS_ERR(dir)) {
56 err = PTR_ERR(dir);
57 goto out;
58 }
59 set_inode_flag(F2FS_I(dir), FI_DELAY_IPUT);
Jaegeuk Kim5deb8262013-06-05 17:42:45 +090060 add_dirty_dir_inode(dir);
Jaegeuk Kimd624c962012-11-02 17:13:32 +090061 }
62
Al Virob7f7a5e2013-01-25 16:15:43 -050063 name.len = le32_to_cpu(raw_inode->i_namelen);
64 name.name = raw_inode->i_name;
Jaegeuk Kim6b8213d2013-05-28 09:19:22 +090065retry:
66 de = f2fs_find_entry(dir, &name, &page);
Russ W. Knize2e5558f2013-09-24 09:40:57 -050067 if (de && inode->i_ino == le32_to_cpu(de->ino))
68 goto out_unmap_put;
Jaegeuk Kim6b8213d2013-05-28 09:19:22 +090069 if (de) {
70 einode = f2fs_iget(inode->i_sb, le32_to_cpu(de->ino));
71 if (IS_ERR(einode)) {
72 WARN_ON(1);
73 if (PTR_ERR(einode) == -ENOENT)
74 err = -EEXIST;
Russ W. Knize2e5558f2013-09-24 09:40:57 -050075 goto out_unmap_put;
76 }
77 err = acquire_orphan_inode(F2FS_SB(inode->i_sb));
78 if (err) {
79 iput(einode);
80 goto out_unmap_put;
Jaegeuk Kim6b8213d2013-05-28 09:19:22 +090081 }
82 f2fs_delete_entry(de, page, einode);
83 iput(einode);
84 goto retry;
85 }
86 err = __f2fs_add_link(dir, &name, inode);
Russ W. Knize2e5558f2013-09-24 09:40:57 -050087 goto out;
88
89out_unmap_put:
90 kunmap(page);
91 f2fs_put_page(page, 0);
Jaegeuk Kimd624c962012-11-02 17:13:32 +090092out:
Jaegeuk Kimf356fe02013-05-16 15:04:49 +090093 f2fs_msg(inode->i_sb, KERN_NOTICE, "recover_inode and its dentry: "
94 "ino = %x, name = %s, dir = %lx, err = %d",
Dan Carpenterf28c06f2013-05-23 13:02:13 +030095 ino_of_node(ipage), raw_inode->i_name,
96 IS_ERR(dir) ? 0 : dir->i_ino, err);
Jaegeuk Kimd624c962012-11-02 17:13:32 +090097 return err;
98}
99
100static int recover_inode(struct inode *inode, struct page *node_page)
101{
Gu Zheng45590712013-07-15 17:57:38 +0800102 struct f2fs_node *raw_node = F2FS_NODE(node_page);
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900103 struct f2fs_inode *raw_inode = &(raw_node->i);
104
Jaegeuk Kimf356fe02013-05-16 15:04:49 +0900105 if (!IS_INODE(node_page))
106 return 0;
107
Jaegeuk Kim25ca9232012-11-28 16:12:41 +0900108 inode->i_mode = le16_to_cpu(raw_inode->i_mode);
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900109 i_size_write(inode, le64_to_cpu(raw_inode->i_size));
110 inode->i_atime.tv_sec = le64_to_cpu(raw_inode->i_mtime);
111 inode->i_ctime.tv_sec = le64_to_cpu(raw_inode->i_ctime);
112 inode->i_mtime.tv_sec = le64_to_cpu(raw_inode->i_mtime);
113 inode->i_atime.tv_nsec = le32_to_cpu(raw_inode->i_mtime_nsec);
114 inode->i_ctime.tv_nsec = le32_to_cpu(raw_inode->i_ctime_nsec);
115 inode->i_mtime.tv_nsec = le32_to_cpu(raw_inode->i_mtime_nsec);
116
Jaegeuk Kimf356fe02013-05-16 15:04:49 +0900117 if (is_dent_dnode(node_page))
118 return recover_dentry(node_page, inode);
119
120 f2fs_msg(inode->i_sb, KERN_NOTICE, "recover_inode: ino = %x, name = %s",
121 ino_of_node(node_page), raw_inode->i_name);
122 return 0;
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900123}
124
125static int find_fsync_dnodes(struct f2fs_sb_info *sbi, struct list_head *head)
126{
Jaegeuk Kimd71b5562013-08-09 15:03:21 +0900127 unsigned long long cp_ver = cur_cp_version(F2FS_CKPT(sbi));
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900128 struct curseg_info *curseg;
129 struct page *page;
130 block_t blkaddr;
131 int err = 0;
132
133 /* get node pages in the current segment */
134 curseg = CURSEG_I(sbi, CURSEG_WARM_NODE);
135 blkaddr = START_BLOCK(sbi, curseg->segno) + curseg->next_blkoff;
136
137 /* read node page */
138 page = alloc_page(GFP_F2FS_ZERO);
Dan Carpentere27dae42013-08-15 08:54:56 +0300139 if (!page)
140 return -ENOMEM;
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900141 lock_page(page);
142
143 while (1) {
144 struct fsync_inode_entry *entry;
145
Jaegeuk Kim393ff912013-03-08 21:29:23 +0900146 err = f2fs_readpage(sbi, page, blkaddr, READ_SYNC);
147 if (err)
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900148 goto out;
149
Jaegeuk Kim393ff912013-03-08 21:29:23 +0900150 lock_page(page);
151
Jaegeuk Kim6ead1142013-03-20 19:01:06 +0900152 if (cp_ver != cpver_of_node(page))
Jaegeuk Kimf356fe02013-05-16 15:04:49 +0900153 break;
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900154
155 if (!is_fsync_dnode(page))
156 goto next;
157
158 entry = get_fsync_inode(head, ino_of_node(page));
159 if (entry) {
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900160 if (IS_INODE(page) && is_dent_dnode(page))
161 set_inode_flag(F2FS_I(entry->inode),
162 FI_INC_LINK);
163 } else {
164 if (IS_INODE(page) && is_dent_dnode(page)) {
Jaegeuk Kim6ead1142013-03-20 19:01:06 +0900165 err = recover_inode_page(sbi, page);
166 if (err)
Jaegeuk Kimf356fe02013-05-16 15:04:49 +0900167 break;
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900168 }
169
170 /* add this fsync inode to the list */
171 entry = kmem_cache_alloc(fsync_entry_slab, GFP_NOFS);
172 if (!entry) {
173 err = -ENOMEM;
Jaegeuk Kimf356fe02013-05-16 15:04:49 +0900174 break;
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900175 }
176
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900177 entry->inode = f2fs_iget(sbi->sb, ino_of_node(page));
178 if (IS_ERR(entry->inode)) {
179 err = PTR_ERR(entry->inode);
Namjae Jeonfd8bb652012-12-22 12:10:12 +0900180 kmem_cache_free(fsync_entry_slab, entry);
Jaegeuk Kimf356fe02013-05-16 15:04:49 +0900181 break;
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900182 }
Namjae Jeonfd8bb652012-12-22 12:10:12 +0900183 list_add_tail(&entry->list, head);
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900184 }
Jaegeuk Kimaddbe452013-05-15 10:49:13 +0900185 entry->blkaddr = blkaddr;
186
Jaegeuk Kimf356fe02013-05-16 15:04:49 +0900187 err = recover_inode(entry->inode, page);
188 if (err && err != -ENOENT)
189 break;
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900190next:
191 /* check next segment */
192 blkaddr = next_blkaddr_of_node(page);
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900193 }
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900194 unlock_page(page);
Jaegeuk Kim393ff912013-03-08 21:29:23 +0900195out:
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900196 __free_pages(page, 0);
197 return err;
198}
199
Gu Zheng5ebefc52013-06-27 09:28:54 +0800200static void destroy_fsync_dnodes(struct list_head *head)
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900201{
Dan Carpenterd8b79b22013-01-20 18:02:58 +0300202 struct fsync_inode_entry *entry, *tmp;
203
204 list_for_each_entry_safe(entry, tmp, head, list) {
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900205 iput(entry->inode);
206 list_del(&entry->list);
207 kmem_cache_free(fsync_entry_slab, entry);
208 }
209}
210
Jaegeuk Kim39cf72c2013-05-22 08:20:01 +0900211static int check_index_in_prev_nodes(struct f2fs_sb_info *sbi,
Jaegeuk Kimb292dcab2013-05-22 08:02:02 +0900212 block_t blkaddr, struct dnode_of_data *dn)
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900213{
214 struct seg_entry *sentry;
215 unsigned int segno = GET_SEGNO(sbi, blkaddr);
216 unsigned short blkoff = GET_SEGOFF_FROM_SEG0(sbi, blkaddr) &
217 (sbi->blocks_per_seg - 1);
218 struct f2fs_summary sum;
Jaegeuk Kimb292dcab2013-05-22 08:02:02 +0900219 nid_t ino, nid;
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900220 void *kaddr;
221 struct inode *inode;
222 struct page *node_page;
Jaegeuk Kimde936532013-08-12 21:08:03 +0900223 unsigned int offset;
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900224 block_t bidx;
225 int i;
226
227 sentry = get_seg_entry(sbi, segno);
228 if (!f2fs_test_bit(blkoff, sentry->cur_valid_map))
Jaegeuk Kim39cf72c2013-05-22 08:20:01 +0900229 return 0;
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900230
231 /* Get the previous summary */
232 for (i = CURSEG_WARM_DATA; i <= CURSEG_COLD_DATA; i++) {
233 struct curseg_info *curseg = CURSEG_I(sbi, i);
234 if (curseg->segno == segno) {
235 sum = curseg->sum_blk->entries[blkoff];
236 break;
237 }
238 }
239 if (i > CURSEG_COLD_DATA) {
240 struct page *sum_page = get_sum_page(sbi, segno);
241 struct f2fs_summary_block *sum_node;
242 kaddr = page_address(sum_page);
243 sum_node = (struct f2fs_summary_block *)kaddr;
244 sum = sum_node->entries[blkoff];
245 f2fs_put_page(sum_page, 1);
246 }
247
Jaegeuk Kimb292dcab2013-05-22 08:02:02 +0900248 /* Use the locked dnode page and inode */
249 nid = le32_to_cpu(sum.nid);
250 if (dn->inode->i_ino == nid) {
251 struct dnode_of_data tdn = *dn;
252 tdn.nid = nid;
253 tdn.node_page = dn->inode_page;
Jaegeuk Kim060dd672013-06-24 07:47:23 +0900254 tdn.ofs_in_node = le16_to_cpu(sum.ofs_in_node);
Jaegeuk Kimb292dcab2013-05-22 08:02:02 +0900255 truncate_data_blocks_range(&tdn, 1);
Jaegeuk Kim39cf72c2013-05-22 08:20:01 +0900256 return 0;
Jaegeuk Kimb292dcab2013-05-22 08:02:02 +0900257 } else if (dn->nid == nid) {
258 struct dnode_of_data tdn = *dn;
Jaegeuk Kim060dd672013-06-24 07:47:23 +0900259 tdn.ofs_in_node = le16_to_cpu(sum.ofs_in_node);
Jaegeuk Kimb292dcab2013-05-22 08:02:02 +0900260 truncate_data_blocks_range(&tdn, 1);
Jaegeuk Kim39cf72c2013-05-22 08:20:01 +0900261 return 0;
Jaegeuk Kimb292dcab2013-05-22 08:02:02 +0900262 }
263
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900264 /* Get the node page */
Jaegeuk Kimb292dcab2013-05-22 08:02:02 +0900265 node_page = get_node_page(sbi, nid);
Jaegeuk Kim39cf72c2013-05-22 08:20:01 +0900266 if (IS_ERR(node_page))
267 return PTR_ERR(node_page);
Jaegeuk Kimde936532013-08-12 21:08:03 +0900268
269 offset = ofs_of_node(node_page);
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900270 ino = ino_of_node(node_page);
271 f2fs_put_page(node_page, 1);
272
273 /* Deallocate previous index in the node page */
Jaegeuk Kimd4686d562013-01-31 15:36:04 +0900274 inode = f2fs_iget(sbi->sb, ino);
Namjae Jeon06025f42012-12-22 12:09:43 +0900275 if (IS_ERR(inode))
Jaegeuk Kim39cf72c2013-05-22 08:20:01 +0900276 return PTR_ERR(inode);
Namjae Jeon06025f42012-12-22 12:09:43 +0900277
Jaegeuk Kimde936532013-08-12 21:08:03 +0900278 bidx = start_bidx_of_node(offset, F2FS_I(inode)) +
279 le16_to_cpu(sum.ofs_in_node);
280
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900281 truncate_hole(inode, bidx, bidx + 1);
282 iput(inode);
Jaegeuk Kim39cf72c2013-05-22 08:20:01 +0900283 return 0;
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900284}
285
Jaegeuk Kim6ead1142013-03-20 19:01:06 +0900286static int do_recover_data(struct f2fs_sb_info *sbi, struct inode *inode,
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900287 struct page *page, block_t blkaddr)
288{
Jaegeuk Kimde936532013-08-12 21:08:03 +0900289 struct f2fs_inode_info *fi = F2FS_I(inode);
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900290 unsigned int start, end;
291 struct dnode_of_data dn;
292 struct f2fs_summary sum;
293 struct node_info ni;
Jaegeuk Kimf356fe02013-05-16 15:04:49 +0900294 int err = 0, recovered = 0;
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900295
Jaegeuk Kimde936532013-08-12 21:08:03 +0900296 start = start_bidx_of_node(ofs_of_node(page), fi);
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900297 if (IS_INODE(page))
Jaegeuk Kimde936532013-08-12 21:08:03 +0900298 end = start + ADDRS_PER_INODE(fi);
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900299 else
300 end = start + ADDRS_PER_BLOCK;
301
Gu Zhenge4795562013-09-27 18:08:30 +0800302 f2fs_lock_op(sbi);
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900303 set_new_dnode(&dn, inode, NULL, NULL, 0);
Jaegeuk Kim39936832012-11-22 16:21:29 +0900304
Jaegeuk Kim6ead1142013-03-20 19:01:06 +0900305 err = get_dnode_of_data(&dn, start, ALLOC_NODE);
Jaegeuk Kim39936832012-11-22 16:21:29 +0900306 if (err) {
Gu Zhenge4795562013-09-27 18:08:30 +0800307 f2fs_unlock_op(sbi);
Jaegeuk Kim6ead1142013-03-20 19:01:06 +0900308 return err;
Jaegeuk Kim39936832012-11-22 16:21:29 +0900309 }
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900310
311 wait_on_page_writeback(dn.node_page);
312
313 get_node_info(sbi, dn.nid, &ni);
Jaegeuk Kim5d56b672013-10-29 15:14:54 +0900314 f2fs_bug_on(ni.ino != ino_of_node(page));
315 f2fs_bug_on(ofs_of_node(dn.node_page) != ofs_of_node(page));
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900316
317 for (; start < end; start++) {
318 block_t src, dest;
319
320 src = datablock_addr(dn.node_page, dn.ofs_in_node);
321 dest = datablock_addr(page, dn.ofs_in_node);
322
323 if (src != dest && dest != NEW_ADDR && dest != NULL_ADDR) {
324 if (src == NULL_ADDR) {
Jaegeuk Kim5d56b672013-10-29 15:14:54 +0900325 err = reserve_new_block(&dn);
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900326 /* We should not get -ENOSPC */
Jaegeuk Kim5d56b672013-10-29 15:14:54 +0900327 f2fs_bug_on(err);
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900328 }
329
330 /* Check the previous node page having this index */
Jaegeuk Kim39cf72c2013-05-22 08:20:01 +0900331 err = check_index_in_prev_nodes(sbi, dest, &dn);
332 if (err)
333 goto err;
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900334
335 set_summary(&sum, dn.nid, dn.ofs_in_node, ni.version);
336
337 /* write dummy data page */
338 recover_data_page(sbi, NULL, &sum, src, dest);
339 update_extent_cache(dest, &dn);
Jaegeuk Kimf356fe02013-05-16 15:04:49 +0900340 recovered++;
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900341 }
342 dn.ofs_in_node++;
343 }
344
345 /* write node page in place */
346 set_summary(&sum, dn.nid, 0, 0);
347 if (IS_INODE(dn.node_page))
348 sync_inode_page(&dn);
349
350 copy_node_footer(dn.node_page, page);
351 fill_node_footer(dn.node_page, dn.nid, ni.ino,
352 ofs_of_node(page), false);
353 set_page_dirty(dn.node_page);
354
355 recover_node_page(sbi, dn.node_page, &sum, &ni, blkaddr);
Jaegeuk Kim39cf72c2013-05-22 08:20:01 +0900356err:
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900357 f2fs_put_dnode(&dn);
Gu Zhenge4795562013-09-27 18:08:30 +0800358 f2fs_unlock_op(sbi);
Jaegeuk Kimf356fe02013-05-16 15:04:49 +0900359
360 f2fs_msg(sbi->sb, KERN_NOTICE, "recover_data: ino = %lx, "
Jaegeuk Kim39cf72c2013-05-22 08:20:01 +0900361 "recovered_data = %d blocks, err = %d",
362 inode->i_ino, recovered, err);
363 return err;
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900364}
365
Jaegeuk Kim6ead1142013-03-20 19:01:06 +0900366static int recover_data(struct f2fs_sb_info *sbi,
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900367 struct list_head *head, int type)
368{
Jaegeuk Kimd71b5562013-08-09 15:03:21 +0900369 unsigned long long cp_ver = cur_cp_version(F2FS_CKPT(sbi));
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900370 struct curseg_info *curseg;
371 struct page *page;
Jaegeuk Kim6ead1142013-03-20 19:01:06 +0900372 int err = 0;
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900373 block_t blkaddr;
374
375 /* get node pages in the current segment */
376 curseg = CURSEG_I(sbi, type);
377 blkaddr = NEXT_FREE_BLKADDR(sbi, curseg);
378
379 /* read node page */
380 page = alloc_page(GFP_NOFS | __GFP_ZERO);
Dan Carpentere27dae42013-08-15 08:54:56 +0300381 if (!page)
Jaegeuk Kim6ead1142013-03-20 19:01:06 +0900382 return -ENOMEM;
383
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900384 lock_page(page);
385
386 while (1) {
387 struct fsync_inode_entry *entry;
388
Jaegeuk Kim6ead1142013-03-20 19:01:06 +0900389 err = f2fs_readpage(sbi, page, blkaddr, READ_SYNC);
390 if (err)
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900391 goto out;
392
Jaegeuk Kim393ff912013-03-08 21:29:23 +0900393 lock_page(page);
394
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900395 if (cp_ver != cpver_of_node(page))
Jaegeuk Kim45856af2013-05-20 10:26:09 +0900396 break;
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900397
398 entry = get_fsync_inode(head, ino_of_node(page));
399 if (!entry)
400 goto next;
401
Jaegeuk Kim6ead1142013-03-20 19:01:06 +0900402 err = do_recover_data(sbi, entry->inode, page, blkaddr);
403 if (err)
Jaegeuk Kim45856af2013-05-20 10:26:09 +0900404 break;
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900405
406 if (entry->blkaddr == blkaddr) {
407 iput(entry->inode);
408 list_del(&entry->list);
409 kmem_cache_free(fsync_entry_slab, entry);
410 }
411next:
412 /* check next segment */
413 blkaddr = next_blkaddr_of_node(page);
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900414 }
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900415 unlock_page(page);
Jaegeuk Kim393ff912013-03-08 21:29:23 +0900416out:
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900417 __free_pages(page, 0);
418
Jaegeuk Kim6ead1142013-03-20 19:01:06 +0900419 if (!err)
420 allocate_new_segments(sbi);
421 return err;
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900422}
423
Jaegeuk Kim6ead1142013-03-20 19:01:06 +0900424int recover_fsync_data(struct f2fs_sb_info *sbi)
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900425{
426 struct list_head inode_list;
Jaegeuk Kim6ead1142013-03-20 19:01:06 +0900427 int err;
Haicheng Liaabe5132013-10-23 12:39:32 +0800428 bool need_writecp = false;
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900429
430 fsync_entry_slab = f2fs_kmem_cache_create("f2fs_fsync_inode_entry",
431 sizeof(struct fsync_inode_entry), NULL);
432 if (unlikely(!fsync_entry_slab))
Jaegeuk Kim6ead1142013-03-20 19:01:06 +0900433 return -ENOMEM;
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900434
435 INIT_LIST_HEAD(&inode_list);
436
437 /* step #1: find fsynced inode numbers */
Haicheng Liaabe5132013-10-23 12:39:32 +0800438 sbi->por_doing = true;
Jaegeuk Kim6ead1142013-03-20 19:01:06 +0900439 err = find_fsync_dnodes(sbi, &inode_list);
440 if (err)
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900441 goto out;
442
443 if (list_empty(&inode_list))
444 goto out;
445
Haicheng Liaabe5132013-10-23 12:39:32 +0800446 need_writecp = true;
Chao Yu691c6fd2013-09-24 09:26:24 +0800447
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900448 /* step #2: recover data */
Jaegeuk Kim6ead1142013-03-20 19:01:06 +0900449 err = recover_data(sbi, &inode_list, CURSEG_WARM_NODE);
Jaegeuk Kim5d56b672013-10-29 15:14:54 +0900450 f2fs_bug_on(!list_empty(&inode_list));
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900451out:
Gu Zheng5ebefc52013-06-27 09:28:54 +0800452 destroy_fsync_dnodes(&inode_list);
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900453 kmem_cache_destroy(fsync_entry_slab);
Haicheng Liaabe5132013-10-23 12:39:32 +0800454 sbi->por_doing = false;
Chao Yu691c6fd2013-09-24 09:26:24 +0800455 if (!err && need_writecp)
Jaegeuk Kim2c2c1492013-05-20 14:48:49 +0900456 write_checkpoint(sbi, false);
Jaegeuk Kim6ead1142013-03-20 19:01:06 +0900457 return err;
Jaegeuk Kimd624c962012-11-02 17:13:32 +0900458}