blob: 1fbebcb33a9df0a338e8d16ff53a43d4155c222a [file] [log] [blame]
Jaegeuk Kim0a8165d2012-11-29 13:28:09 +09001/*
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +09002 * fs/f2fs/inode.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 <linux/buffer_head.h>
Jaegeuk Kime8ea9b32016-09-09 16:59:39 -070014#include <linux/backing-dev.h>
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +090015#include <linux/writeback.h>
16
17#include "f2fs.h"
18#include "node.h"
19
Namjae Jeona2a4a7e2013-04-20 01:28:40 +090020#include <trace/events/f2fs.h>
21
Jaegeuk Kimb56ab832016-06-30 19:09:37 -070022void f2fs_mark_inode_dirty_sync(struct inode *inode)
23{
24 if (f2fs_inode_dirtied(inode))
25 return;
26 mark_inode_dirty_sync(inode);
27}
28
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +090029void f2fs_set_inode_flags(struct inode *inode)
30{
31 unsigned int flags = F2FS_I(inode)->i_flags;
Zhang Zhen8abfb362014-04-15 14:19:38 +080032 unsigned int new_fl = 0;
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +090033
34 if (flags & FS_SYNC_FL)
Zhang Zhen8abfb362014-04-15 14:19:38 +080035 new_fl |= S_SYNC;
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +090036 if (flags & FS_APPEND_FL)
Zhang Zhen8abfb362014-04-15 14:19:38 +080037 new_fl |= S_APPEND;
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +090038 if (flags & FS_IMMUTABLE_FL)
Zhang Zhen8abfb362014-04-15 14:19:38 +080039 new_fl |= S_IMMUTABLE;
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +090040 if (flags & FS_NOATIME_FL)
Zhang Zhen8abfb362014-04-15 14:19:38 +080041 new_fl |= S_NOATIME;
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +090042 if (flags & FS_DIRSYNC_FL)
Zhang Zhen8abfb362014-04-15 14:19:38 +080043 new_fl |= S_DIRSYNC;
Zhang Zhen6a678852015-08-24 10:41:32 +080044 inode_set_flags(inode, new_fl,
45 S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC);
Jaegeuk Kimb56ab832016-06-30 19:09:37 -070046 f2fs_mark_inode_dirty_sync(inode);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +090047}
48
Jaegeuk Kim3d1e3802013-10-08 18:01:51 +090049static void __get_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
50{
51 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
52 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
53 if (ri->i_addr[0])
Chris Fries6c311ec2014-01-17 14:44:39 -060054 inode->i_rdev =
55 old_decode_dev(le32_to_cpu(ri->i_addr[0]));
Jaegeuk Kim3d1e3802013-10-08 18:01:51 +090056 else
Chris Fries6c311ec2014-01-17 14:44:39 -060057 inode->i_rdev =
58 new_decode_dev(le32_to_cpu(ri->i_addr[1]));
Jaegeuk Kim3d1e3802013-10-08 18:01:51 +090059 }
60}
61
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -070062static bool __written_first_block(struct f2fs_inode *ri)
63{
Jaegeuk Kimadad81e2015-03-24 12:04:20 -070064 block_t addr = le32_to_cpu(ri->i_addr[0]);
65
66 if (addr != NEW_ADDR && addr != NULL_ADDR)
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -070067 return true;
68 return false;
69}
70
Jaegeuk Kim3d1e3802013-10-08 18:01:51 +090071static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
72{
73 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
74 if (old_valid_dev(inode->i_rdev)) {
Chris Fries6c311ec2014-01-17 14:44:39 -060075 ri->i_addr[0] =
76 cpu_to_le32(old_encode_dev(inode->i_rdev));
Jaegeuk Kim3d1e3802013-10-08 18:01:51 +090077 ri->i_addr[1] = 0;
78 } else {
79 ri->i_addr[0] = 0;
Chris Fries6c311ec2014-01-17 14:44:39 -060080 ri->i_addr[1] =
81 cpu_to_le32(new_encode_dev(inode->i_rdev));
Jaegeuk Kim3d1e3802013-10-08 18:01:51 +090082 ri->i_addr[2] = 0;
83 }
84 }
85}
86
Chao Yu9e5ba772015-01-06 14:28:43 +080087static void __recover_inline_status(struct inode *inode, struct page *ipage)
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -070088{
89 void *inline_data = inline_data_addr(ipage);
Chao Yu9e5ba772015-01-06 14:28:43 +080090 __le32 *start = inline_data;
91 __le32 *end = start + MAX_INLINE_DATA / sizeof(__le32);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -070092
Chao Yu9e5ba772015-01-06 14:28:43 +080093 while (start < end) {
94 if (*start++) {
Jaegeuk Kimfec1d652016-01-20 23:43:51 +080095 f2fs_wait_on_page_writeback(ipage, NODE, true);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -070096
Jaegeuk Kim91942322016-05-20 10:13:22 -070097 set_inode_flag(inode, FI_DATA_EXIST);
98 set_raw_inline(inode, F2FS_INODE(ipage));
Chao Yu9e5ba772015-01-06 14:28:43 +080099 set_page_dirty(ipage);
100 return;
101 }
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -0700102 }
Chao Yu9e5ba772015-01-06 14:28:43 +0800103 return;
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -0700104}
105
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900106static int do_read_inode(struct inode *inode)
107{
Jaegeuk Kim40813632014-09-02 15:31:18 -0700108 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900109 struct f2fs_inode_info *fi = F2FS_I(inode);
110 struct page *node_page;
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900111 struct f2fs_inode *ri;
112
113 /* Check if ino is within scope */
Namjae Jeon064e0822013-03-17 17:27:20 +0900114 if (check_nid_range(sbi, inode->i_ino)) {
115 f2fs_msg(inode->i_sb, KERN_ERR, "bad inode number: %lu",
116 (unsigned long) inode->i_ino);
Chao Yud6b7d4b2014-06-12 13:23:41 +0800117 WARN_ON(1);
Namjae Jeon064e0822013-03-17 17:27:20 +0900118 return -EINVAL;
119 }
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900120
121 node_page = get_node_page(sbi, inode->i_ino);
122 if (IS_ERR(node_page))
123 return PTR_ERR(node_page);
124
Jaegeuk Kim58bfaf42013-12-26 16:30:41 +0900125 ri = F2FS_INODE(node_page);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900126
127 inode->i_mode = le16_to_cpu(ri->i_mode);
128 i_uid_write(inode, le32_to_cpu(ri->i_uid));
129 i_gid_write(inode, le32_to_cpu(ri->i_gid));
130 set_nlink(inode, le32_to_cpu(ri->i_links));
131 inode->i_size = le64_to_cpu(ri->i_size);
132 inode->i_blocks = le64_to_cpu(ri->i_blocks);
133
134 inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
135 inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
136 inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
137 inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
138 inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
139 inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
140 inode->i_generation = le32_to_cpu(ri->i_generation);
141
142 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
143 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
144 fi->i_flags = le32_to_cpu(ri->i_flags);
145 fi->flags = 0;
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900146 fi->i_advise = ri->i_advise;
Jaegeuk Kim6666e6a2012-12-10 17:52:48 +0900147 fi->i_pino = le32_to_cpu(ri->i_pino);
Jaegeuk Kim38431542014-02-27 18:20:00 +0900148 fi->i_dir_level = ri->i_dir_level;
Jaegeuk Kim3d1e3802013-10-08 18:01:51 +0900149
Jaegeuk Kimed3d1252015-12-28 11:39:06 -0800150 if (f2fs_init_extent_tree(inode, &ri->i_ext))
151 set_page_dirty(node_page);
Chao Yu0c872e22015-02-05 17:46:29 +0800152
Jaegeuk Kim91942322016-05-20 10:13:22 -0700153 get_inline_info(inode, ri);
Jaegeuk Kim3d1e3802013-10-08 18:01:51 +0900154
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -0700155 /* check data exist */
156 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
Chao Yu9e5ba772015-01-06 14:28:43 +0800157 __recover_inline_status(inode, node_page);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -0700158
Jaegeuk Kim3d1e3802013-10-08 18:01:51 +0900159 /* get rdev by using inline_info */
160 __get_inode_rdev(inode, ri);
161
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -0700162 if (__written_first_block(ri))
Jaegeuk Kim91942322016-05-20 10:13:22 -0700163 set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN);
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -0700164
Jaegeuk Kim26de9b12016-05-20 20:42:37 -0700165 if (!need_inode_block_update(sbi, inode->i_ino))
166 fi->last_disk_size = inode->i_size;
167
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900168 f2fs_put_page(node_page, 1);
Jaegeuk Kim9d1015d2014-12-05 10:51:50 -0800169
Chao Yud5e8f6c2015-07-15 17:28:53 +0800170 stat_inc_inline_xattr(inode);
Jaegeuk Kim9d1015d2014-12-05 10:51:50 -0800171 stat_inc_inline_inode(inode);
172 stat_inc_inline_dir(inode);
173
Chao Yu9e5ba772015-01-06 14:28:43 +0800174 return 0;
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900175}
176
177struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
178{
179 struct f2fs_sb_info *sbi = F2FS_SB(sb);
180 struct inode *inode;
Namjae Jeona2a4a7e2013-04-20 01:28:40 +0900181 int ret = 0;
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900182
183 inode = iget_locked(sb, ino);
184 if (!inode)
185 return ERR_PTR(-ENOMEM);
Namjae Jeona2a4a7e2013-04-20 01:28:40 +0900186
187 if (!(inode->i_state & I_NEW)) {
188 trace_f2fs_iget(inode);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900189 return inode;
Namjae Jeona2a4a7e2013-04-20 01:28:40 +0900190 }
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900191 if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi))
192 goto make_now;
193
194 ret = do_read_inode(inode);
195 if (ret)
196 goto bad_inode;
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900197make_now:
198 if (ino == F2FS_NODE_INO(sbi)) {
199 inode->i_mapping->a_ops = &f2fs_node_aops;
200 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
201 } else if (ino == F2FS_META_INO(sbi)) {
202 inode->i_mapping->a_ops = &f2fs_meta_aops;
203 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
204 } else if (S_ISREG(inode->i_mode)) {
205 inode->i_op = &f2fs_file_inode_operations;
206 inode->i_fop = &f2fs_file_operations;
207 inode->i_mapping->a_ops = &f2fs_dblock_aops;
208 } else if (S_ISDIR(inode->i_mode)) {
209 inode->i_op = &f2fs_dir_inode_operations;
210 inode->i_fop = &f2fs_dir_operations;
211 inode->i_mapping->a_ops = &f2fs_dblock_aops;
Jaegeuk Kima78186e2014-10-17 17:57:29 -0700212 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_HIGH_ZERO);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900213 } else if (S_ISLNK(inode->i_mode)) {
Jaegeuk Kimcbaf0422015-04-29 15:10:53 -0700214 if (f2fs_encrypted_inode(inode))
215 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
216 else
217 inode->i_op = &f2fs_symlink_inode_operations;
Al Viro21fc61c2015-11-17 01:07:57 -0500218 inode_nohighmem(inode);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900219 inode->i_mapping->a_ops = &f2fs_dblock_aops;
220 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
221 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
222 inode->i_op = &f2fs_special_inode_operations;
223 init_special_inode(inode, inode->i_mode, inode->i_rdev);
224 } else {
225 ret = -EIO;
226 goto bad_inode;
227 }
228 unlock_new_inode(inode);
Namjae Jeona2a4a7e2013-04-20 01:28:40 +0900229 trace_f2fs_iget(inode);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900230 return inode;
231
232bad_inode:
233 iget_failed(inode);
Namjae Jeona2a4a7e2013-04-20 01:28:40 +0900234 trace_f2fs_iget_exit(inode, ret);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900235 return ERR_PTR(ret);
236}
237
Jaegeuk Kime8ea9b32016-09-09 16:59:39 -0700238struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino)
239{
240 struct inode *inode;
241retry:
242 inode = f2fs_iget(sb, ino);
243 if (IS_ERR(inode)) {
244 if (PTR_ERR(inode) == -ENOMEM) {
245 congestion_wait(BLK_RW_ASYNC, HZ/50);
246 goto retry;
247 }
248 }
249 return inode;
250}
251
Jaegeuk Kim12719ae2016-01-07 13:23:12 -0800252int update_inode(struct inode *inode, struct page *node_page)
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900253{
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900254 struct f2fs_inode *ri;
Chao Yub691d982016-10-11 22:57:05 +0800255 struct extent_tree *et = F2FS_I(inode)->extent_tree;
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900256
Jaegeuk Kim1e7c48f2016-06-02 14:15:56 -0700257 f2fs_inode_synced(inode);
258
Jaegeuk Kimfec1d652016-01-20 23:43:51 +0800259 f2fs_wait_on_page_writeback(node_page, NODE, true);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900260
Jaegeuk Kim58bfaf42013-12-26 16:30:41 +0900261 ri = F2FS_INODE(node_page);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900262
263 ri->i_mode = cpu_to_le16(inode->i_mode);
264 ri->i_advise = F2FS_I(inode)->i_advise;
265 ri->i_uid = cpu_to_le32(i_uid_read(inode));
266 ri->i_gid = cpu_to_le32(i_gid_read(inode));
267 ri->i_links = cpu_to_le32(inode->i_nlink);
268 ri->i_size = cpu_to_le64(i_size_read(inode));
269 ri->i_blocks = cpu_to_le64(inode->i_blocks);
Chao Yu0c872e22015-02-05 17:46:29 +0800270
Chao Yub691d982016-10-11 22:57:05 +0800271 if (et) {
272 read_lock(&et->lock);
273 set_raw_extent(&et->largest, &ri->i_ext);
274 read_unlock(&et->lock);
275 } else {
Jaegeuk Kim3e72f722015-06-19 17:53:26 -0700276 memset(&ri->i_ext, 0, sizeof(ri->i_ext));
Chao Yub691d982016-10-11 22:57:05 +0800277 }
Jaegeuk Kim91942322016-05-20 10:13:22 -0700278 set_raw_inline(inode, ri);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900279
280 ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
281 ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
282 ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
283 ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
284 ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
285 ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
286 ri->i_current_depth = cpu_to_le32(F2FS_I(inode)->i_current_depth);
287 ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
288 ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
Jaegeuk Kim6666e6a2012-12-10 17:52:48 +0900289 ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900290 ri->i_generation = cpu_to_le32(inode->i_generation);
Jaegeuk Kim38431542014-02-27 18:20:00 +0900291 ri->i_dir_level = F2FS_I(inode)->i_dir_level;
Changman Lee7d79e752013-01-23 09:40:23 +0900292
Jaegeuk Kim3d1e3802013-10-08 18:01:51 +0900293 __set_inode_rdev(inode, ri);
Jaegeuk Kim398b1ac2012-12-19 15:28:39 +0900294 set_cold_node(inode, node_page);
Jaegeuk Kim12719ae2016-01-07 13:23:12 -0800295
Jaegeuk Kim2049d4f2016-01-25 05:57:05 -0800296 /* deleted inode */
297 if (inode->i_nlink == 0)
298 clear_inline_node(node_page);
299
Jaegeuk Kim12719ae2016-01-07 13:23:12 -0800300 return set_page_dirty(node_page);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900301}
302
Jaegeuk Kim12719ae2016-01-07 13:23:12 -0800303int update_inode_page(struct inode *inode)
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900304{
Jaegeuk Kim40813632014-09-02 15:31:18 -0700305 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900306 struct page *node_page;
Jaegeuk Kim12719ae2016-01-07 13:23:12 -0800307 int ret = 0;
Jaegeuk Kim744602c2014-01-24 09:42:16 +0900308retry:
Jaegeuk Kim39936832012-11-22 16:21:29 +0900309 node_page = get_node_page(sbi, inode->i_ino);
Jaegeuk Kim744602c2014-01-24 09:42:16 +0900310 if (IS_ERR(node_page)) {
311 int err = PTR_ERR(node_page);
312 if (err == -ENOMEM) {
313 cond_resched();
314 goto retry;
315 } else if (err != -ENOENT) {
Jaegeuk Kim38f91ca2016-05-18 14:07:56 -0700316 f2fs_stop_checkpoint(sbi, false);
Jaegeuk Kim744602c2014-01-24 09:42:16 +0900317 }
Jaegeuk Kim0f18b462016-05-20 11:10:10 -0700318 f2fs_inode_synced(inode);
Jaegeuk Kim12719ae2016-01-07 13:23:12 -0800319 return 0;
Jaegeuk Kim744602c2014-01-24 09:42:16 +0900320 }
Jaegeuk Kim12719ae2016-01-07 13:23:12 -0800321 ret = update_inode(inode, node_page);
Jaegeuk Kim39936832012-11-22 16:21:29 +0900322 f2fs_put_page(node_page, 1);
Jaegeuk Kim12719ae2016-01-07 13:23:12 -0800323 return ret;
Jaegeuk Kim39936832012-11-22 16:21:29 +0900324}
325
326int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
327{
Jaegeuk Kim40813632014-09-02 15:31:18 -0700328 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900329
330 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
331 inode->i_ino == F2FS_META_INO(sbi))
332 return 0;
333
Jaegeuk Kim91942322016-05-20 10:13:22 -0700334 if (!is_inode_flag_set(inode, FI_DIRTY_INODE))
Jaegeuk Kimb3783872013-06-10 09:17:01 +0900335 return 0;
336
Jaegeuk Kim39936832012-11-22 16:21:29 +0900337 /*
Jaegeuk Kimc5cd29d2015-09-12 11:25:30 -0700338 * We need to balance fs here to prevent from producing dirty node pages
Jaegeuk Kim39936832012-11-22 16:21:29 +0900339 * during the urgent cleaning time when runing out of free sections.
340 */
Jaegeuk Kim12719ae2016-01-07 13:23:12 -0800341 if (update_inode_page(inode))
Jaegeuk Kim2c4db1a2016-01-07 14:15:04 -0800342 f2fs_balance_fs(sbi, true);
Jaegeuk Kim744602c2014-01-24 09:42:16 +0900343 return 0;
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900344}
345
Jaegeuk Kim0a8165d2012-11-29 13:28:09 +0900346/*
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900347 * Called at the last iput() if i_nlink is zero
348 */
349void f2fs_evict_inode(struct inode *inode)
350{
Jaegeuk Kim40813632014-09-02 15:31:18 -0700351 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Jaegeuk Kim91942322016-05-20 10:13:22 -0700352 nid_t xnid = F2FS_I(inode)->i_xattr_nid;
Chao Yu13ec7292015-08-24 17:40:45 +0800353 int err = 0;
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900354
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700355 /* some remained atomic pages should discarded */
Jaegeuk Kim1e843712014-12-09 06:08:59 -0800356 if (f2fs_is_atomic_file(inode))
Chao Yu29b96b52016-02-06 14:38:29 +0800357 drop_inmem_pages(inode);
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700358
Namjae Jeona2a4a7e2013-04-20 01:28:40 +0900359 trace_f2fs_evict_inode(inode);
Johannes Weiner91b0abe2014-04-03 14:47:49 -0700360 truncate_inode_pages_final(&inode->i_data);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900361
362 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
363 inode->i_ino == F2FS_META_INO(sbi))
Chao Yudbf20cb2014-07-25 12:00:57 +0800364 goto out_clear;
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900365
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700366 f2fs_bug_on(sbi, get_dirty_pages(inode));
Chao Yuc227f912015-12-16 13:09:20 +0800367 remove_dirty_inode(inode);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900368
Jaegeuk Kim3e72f722015-06-19 17:53:26 -0700369 f2fs_destroy_extent_tree(inode);
370
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900371 if (inode->i_nlink || is_bad_inode(inode))
372 goto no_delete;
373
Jaegeuk Kim53aa6bb2016-05-25 15:24:18 -0700374#ifdef CONFIG_F2FS_FAULT_INJECTION
Chao Yu1ecc0c52016-09-23 21:30:09 +0800375 if (time_to_inject(sbi, FAULT_EVICT_INODE))
Jaegeuk Kim53aa6bb2016-05-25 15:24:18 -0700376 goto no_delete;
377#endif
378
Changman Leed6212a52013-01-29 18:30:07 +0900379 sb_start_intwrite(inode->i_sb);
Jaegeuk Kim91942322016-05-20 10:13:22 -0700380 set_inode_flag(inode, FI_NO_ALLOC);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900381 i_size_write(inode, 0);
Jaegeuk Kim4c0c2942016-05-03 09:22:18 -0700382retry:
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900383 if (F2FS_HAS_BLOCKS(inode))
Jaegeuk Kim9a449e92016-06-02 13:49:38 -0700384 err = f2fs_truncate(inode);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900385
Chao Yu13ec7292015-08-24 17:40:45 +0800386 if (!err) {
387 f2fs_lock_op(sbi);
388 err = remove_inode_page(inode);
389 f2fs_unlock_op(sbi);
390 }
Jaegeuk Kim39936832012-11-22 16:21:29 +0900391
Jaegeuk Kim4c0c2942016-05-03 09:22:18 -0700392 /* give more chances, if ENOMEM case */
393 if (err == -ENOMEM) {
394 err = 0;
395 goto retry;
396 }
397
Jaegeuk Kim0f18b462016-05-20 11:10:10 -0700398 if (err)
399 update_inode_page(inode);
Changman Leed6212a52013-01-29 18:30:07 +0900400 sb_end_intwrite(inode->i_sb);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900401no_delete:
Chao Yud5e8f6c2015-07-15 17:28:53 +0800402 stat_dec_inline_xattr(inode);
Jaegeuk Kim3289c062014-10-13 20:00:16 -0700403 stat_dec_inline_dir(inode);
Jaegeuk Kime7a2bf22014-10-14 10:29:50 -0700404 stat_dec_inline_inode(inode);
Chao Yu0bdee482015-03-19 19:27:51 +0800405
Jaegeuk Kim81988992014-04-30 15:04:39 +0900406 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, inode->i_ino);
Chao Yu002a41c2014-08-04 09:54:58 +0800407 if (xnid)
408 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
Jaegeuk Kim91942322016-05-20 10:13:22 -0700409 if (is_inode_flag_set(inode, FI_APPEND_WRITE))
Chao Yua49324f2015-12-15 13:29:47 +0800410 add_ino_entry(sbi, inode->i_ino, APPEND_INO);
Jaegeuk Kim91942322016-05-20 10:13:22 -0700411 if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
Chao Yua49324f2015-12-15 13:29:47 +0800412 add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
Jaegeuk Kim91942322016-05-20 10:13:22 -0700413 if (is_inode_flag_set(inode, FI_FREE_NID)) {
Jaegeuk Kim221149c2016-05-02 12:34:48 -0700414 alloc_nid_failed(sbi, inode->i_ino);
Jaegeuk Kim91942322016-05-20 10:13:22 -0700415 clear_inode_flag(inode, FI_FREE_NID);
Jaegeuk Kimc9b63bd2015-06-23 10:36:08 -0700416 }
Jaegeuk Kim29234b12016-05-04 19:48:53 -0700417 f2fs_bug_on(sbi, err &&
418 !exist_written_data(sbi, inode->i_ino, ORPHAN_INO));
Chao Yudbf20cb2014-07-25 12:00:57 +0800419out_clear:
Jaegeuk Kim0b81d072015-05-15 16:26:10 -0700420 fscrypt_put_encryption_info(inode, NULL);
Chao Yudbf20cb2014-07-25 12:00:57 +0800421 clear_inode(inode);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900422}
Jaegeuk Kim44c16152014-09-25 11:55:53 -0700423
424/* caller should call f2fs_lock_op() */
425void handle_failed_inode(struct inode *inode)
426{
427 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Jaegeuk Kim221149c2016-05-02 12:34:48 -0700428 struct node_info ni;
Jaegeuk Kim44c16152014-09-25 11:55:53 -0700429
Jaegeuk Kim221149c2016-05-02 12:34:48 -0700430 /* don't make bad inode, since it becomes a regular file. */
Jaegeuk Kim44c16152014-09-25 11:55:53 -0700431 unlock_new_inode(inode);
432
Chao Yu13ec7292015-08-24 17:40:45 +0800433 /*
Chao Yu13ec7292015-08-24 17:40:45 +0800434 * Note: we should add inode to orphan list before f2fs_unlock_op()
435 * so we can prevent losing this orphan when encoutering checkpoint
436 * and following suddenly power-off.
437 */
Jaegeuk Kim221149c2016-05-02 12:34:48 -0700438 get_node_info(sbi, inode->i_ino, &ni);
439
440 if (ni.blk_addr != NULL_ADDR) {
441 int err = acquire_orphan_inode(sbi);
442 if (err) {
443 set_sbi_flag(sbi, SBI_NEED_FSCK);
444 f2fs_msg(sbi->sb, KERN_WARNING,
445 "Too many orphan inodes, run fsck to fix.");
446 } else {
Jaegeuk Kim67c37582016-06-13 18:27:02 -0700447 add_orphan_inode(inode);
Jaegeuk Kim221149c2016-05-02 12:34:48 -0700448 }
449 alloc_nid_done(sbi, inode->i_ino);
450 } else {
Jaegeuk Kim91942322016-05-20 10:13:22 -0700451 set_inode_flag(inode, FI_FREE_NID);
Chao Yu13ec7292015-08-24 17:40:45 +0800452 }
Jaegeuk Kim44c16152014-09-25 11:55:53 -0700453
Jaegeuk Kim44c16152014-09-25 11:55:53 -0700454 f2fs_unlock_op(sbi);
455
456 /* iput will drop the inode object */
457 iput(inode);
458}