blob: 0900814485c74d7247c115db984ba1a992b556e0 [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 Kim7c457292016-10-14 11:51:23 -070022void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync)
Jaegeuk Kimb56ab832016-06-30 19:09:37 -070023{
Jaegeuk Kim7c457292016-10-14 11:51:23 -070024 if (f2fs_inode_dirtied(inode, sync))
Jaegeuk Kimb56ab832016-06-30 19:09:37 -070025 return;
Jaegeuk Kim7c457292016-10-14 11:51:23 -070026
Jaegeuk Kimb56ab832016-06-30 19:09:37 -070027 mark_inode_dirty_sync(inode);
28}
29
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +090030void f2fs_set_inode_flags(struct inode *inode)
31{
32 unsigned int flags = F2FS_I(inode)->i_flags;
Zhang Zhen8abfb362014-04-15 14:19:38 +080033 unsigned int new_fl = 0;
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +090034
35 if (flags & FS_SYNC_FL)
Zhang Zhen8abfb362014-04-15 14:19:38 +080036 new_fl |= S_SYNC;
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +090037 if (flags & FS_APPEND_FL)
Zhang Zhen8abfb362014-04-15 14:19:38 +080038 new_fl |= S_APPEND;
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +090039 if (flags & FS_IMMUTABLE_FL)
Zhang Zhen8abfb362014-04-15 14:19:38 +080040 new_fl |= S_IMMUTABLE;
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +090041 if (flags & FS_NOATIME_FL)
Zhang Zhen8abfb362014-04-15 14:19:38 +080042 new_fl |= S_NOATIME;
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +090043 if (flags & FS_DIRSYNC_FL)
Zhang Zhen8abfb362014-04-15 14:19:38 +080044 new_fl |= S_DIRSYNC;
Zhang Zhen6a678852015-08-24 10:41:32 +080045 inode_set_flags(inode, new_fl,
46 S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC);
Jaegeuk Kim7c457292016-10-14 11:51:23 -070047 f2fs_mark_inode_dirty_sync(inode, false);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +090048}
49
Jaegeuk Kim3d1e3802013-10-08 18:01:51 +090050static void __get_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
51{
52 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
53 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
54 if (ri->i_addr[0])
Chris Fries6c311ec2014-01-17 14:44:39 -060055 inode->i_rdev =
56 old_decode_dev(le32_to_cpu(ri->i_addr[0]));
Jaegeuk Kim3d1e3802013-10-08 18:01:51 +090057 else
Chris Fries6c311ec2014-01-17 14:44:39 -060058 inode->i_rdev =
59 new_decode_dev(le32_to_cpu(ri->i_addr[1]));
Jaegeuk Kim3d1e3802013-10-08 18:01:51 +090060 }
61}
62
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -070063static bool __written_first_block(struct f2fs_inode *ri)
64{
Jaegeuk Kimadad81e2015-03-24 12:04:20 -070065 block_t addr = le32_to_cpu(ri->i_addr[0]);
66
67 if (addr != NEW_ADDR && addr != NULL_ADDR)
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -070068 return true;
69 return false;
70}
71
Jaegeuk Kim3d1e3802013-10-08 18:01:51 +090072static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
73{
74 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
75 if (old_valid_dev(inode->i_rdev)) {
Chris Fries6c311ec2014-01-17 14:44:39 -060076 ri->i_addr[0] =
77 cpu_to_le32(old_encode_dev(inode->i_rdev));
Jaegeuk Kim3d1e3802013-10-08 18:01:51 +090078 ri->i_addr[1] = 0;
79 } else {
80 ri->i_addr[0] = 0;
Chris Fries6c311ec2014-01-17 14:44:39 -060081 ri->i_addr[1] =
82 cpu_to_le32(new_encode_dev(inode->i_rdev));
Jaegeuk Kim3d1e3802013-10-08 18:01:51 +090083 ri->i_addr[2] = 0;
84 }
85 }
86}
87
Chao Yu9e5ba772015-01-06 14:28:43 +080088static void __recover_inline_status(struct inode *inode, struct page *ipage)
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -070089{
90 void *inline_data = inline_data_addr(ipage);
Chao Yu9e5ba772015-01-06 14:28:43 +080091 __le32 *start = inline_data;
92 __le32 *end = start + MAX_INLINE_DATA / sizeof(__le32);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -070093
Chao Yu9e5ba772015-01-06 14:28:43 +080094 while (start < end) {
95 if (*start++) {
Jaegeuk Kimfec1d652016-01-20 23:43:51 +080096 f2fs_wait_on_page_writeback(ipage, NODE, true);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -070097
Jaegeuk Kim91942322016-05-20 10:13:22 -070098 set_inode_flag(inode, FI_DATA_EXIST);
99 set_raw_inline(inode, F2FS_INODE(ipage));
Chao Yu9e5ba772015-01-06 14:28:43 +0800100 set_page_dirty(ipage);
101 return;
102 }
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -0700103 }
Chao Yu9e5ba772015-01-06 14:28:43 +0800104 return;
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -0700105}
106
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900107static int do_read_inode(struct inode *inode)
108{
Jaegeuk Kim40813632014-09-02 15:31:18 -0700109 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900110 struct f2fs_inode_info *fi = F2FS_I(inode);
111 struct page *node_page;
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900112 struct f2fs_inode *ri;
113
114 /* Check if ino is within scope */
Namjae Jeon064e0822013-03-17 17:27:20 +0900115 if (check_nid_range(sbi, inode->i_ino)) {
116 f2fs_msg(inode->i_sb, KERN_ERR, "bad inode number: %lu",
117 (unsigned long) inode->i_ino);
Chao Yud6b7d4b2014-06-12 13:23:41 +0800118 WARN_ON(1);
Namjae Jeon064e0822013-03-17 17:27:20 +0900119 return -EINVAL;
120 }
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900121
122 node_page = get_node_page(sbi, inode->i_ino);
123 if (IS_ERR(node_page))
124 return PTR_ERR(node_page);
125
Jaegeuk Kim58bfaf42013-12-26 16:30:41 +0900126 ri = F2FS_INODE(node_page);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900127
128 inode->i_mode = le16_to_cpu(ri->i_mode);
129 i_uid_write(inode, le32_to_cpu(ri->i_uid));
130 i_gid_write(inode, le32_to_cpu(ri->i_gid));
131 set_nlink(inode, le32_to_cpu(ri->i_links));
132 inode->i_size = le64_to_cpu(ri->i_size);
133 inode->i_blocks = le64_to_cpu(ri->i_blocks);
134
135 inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
136 inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
137 inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
138 inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
139 inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
140 inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
141 inode->i_generation = le32_to_cpu(ri->i_generation);
142
143 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
144 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
145 fi->i_flags = le32_to_cpu(ri->i_flags);
146 fi->flags = 0;
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900147 fi->i_advise = ri->i_advise;
Jaegeuk Kim6666e6a2012-12-10 17:52:48 +0900148 fi->i_pino = le32_to_cpu(ri->i_pino);
Jaegeuk Kim38431542014-02-27 18:20:00 +0900149 fi->i_dir_level = ri->i_dir_level;
Jaegeuk Kim3d1e3802013-10-08 18:01:51 +0900150
Jaegeuk Kimed3d1252015-12-28 11:39:06 -0800151 if (f2fs_init_extent_tree(inode, &ri->i_ext))
152 set_page_dirty(node_page);
Chao Yu0c872e22015-02-05 17:46:29 +0800153
Jaegeuk Kim91942322016-05-20 10:13:22 -0700154 get_inline_info(inode, ri);
Jaegeuk Kim3d1e3802013-10-08 18:01:51 +0900155
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -0700156 /* check data exist */
157 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
Chao Yu9e5ba772015-01-06 14:28:43 +0800158 __recover_inline_status(inode, node_page);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -0700159
Jaegeuk Kim3d1e3802013-10-08 18:01:51 +0900160 /* get rdev by using inline_info */
161 __get_inode_rdev(inode, ri);
162
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -0700163 if (__written_first_block(ri))
Jaegeuk Kim91942322016-05-20 10:13:22 -0700164 set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN);
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -0700165
Jaegeuk Kim26de9b12016-05-20 20:42:37 -0700166 if (!need_inode_block_update(sbi, inode->i_ino))
167 fi->last_disk_size = inode->i_size;
168
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900169 f2fs_put_page(node_page, 1);
Jaegeuk Kim9d1015d2014-12-05 10:51:50 -0800170
Chao Yud5e8f6c2015-07-15 17:28:53 +0800171 stat_inc_inline_xattr(inode);
Jaegeuk Kim9d1015d2014-12-05 10:51:50 -0800172 stat_inc_inline_inode(inode);
173 stat_inc_inline_dir(inode);
174
Chao Yu9e5ba772015-01-06 14:28:43 +0800175 return 0;
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900176}
177
178struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
179{
180 struct f2fs_sb_info *sbi = F2FS_SB(sb);
181 struct inode *inode;
Namjae Jeona2a4a7e2013-04-20 01:28:40 +0900182 int ret = 0;
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900183
184 inode = iget_locked(sb, ino);
185 if (!inode)
186 return ERR_PTR(-ENOMEM);
Namjae Jeona2a4a7e2013-04-20 01:28:40 +0900187
188 if (!(inode->i_state & I_NEW)) {
189 trace_f2fs_iget(inode);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900190 return inode;
Namjae Jeona2a4a7e2013-04-20 01:28:40 +0900191 }
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900192 if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi))
193 goto make_now;
194
195 ret = do_read_inode(inode);
196 if (ret)
197 goto bad_inode;
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900198make_now:
199 if (ino == F2FS_NODE_INO(sbi)) {
200 inode->i_mapping->a_ops = &f2fs_node_aops;
201 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
202 } else if (ino == F2FS_META_INO(sbi)) {
203 inode->i_mapping->a_ops = &f2fs_meta_aops;
204 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
205 } else if (S_ISREG(inode->i_mode)) {
206 inode->i_op = &f2fs_file_inode_operations;
207 inode->i_fop = &f2fs_file_operations;
208 inode->i_mapping->a_ops = &f2fs_dblock_aops;
209 } else if (S_ISDIR(inode->i_mode)) {
210 inode->i_op = &f2fs_dir_inode_operations;
211 inode->i_fop = &f2fs_dir_operations;
212 inode->i_mapping->a_ops = &f2fs_dblock_aops;
Jaegeuk Kima78186e2014-10-17 17:57:29 -0700213 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_HIGH_ZERO);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900214 } else if (S_ISLNK(inode->i_mode)) {
Jaegeuk Kimcbaf0422015-04-29 15:10:53 -0700215 if (f2fs_encrypted_inode(inode))
216 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
217 else
218 inode->i_op = &f2fs_symlink_inode_operations;
Al Viro21fc61c2015-11-17 01:07:57 -0500219 inode_nohighmem(inode);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900220 inode->i_mapping->a_ops = &f2fs_dblock_aops;
221 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
222 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
223 inode->i_op = &f2fs_special_inode_operations;
224 init_special_inode(inode, inode->i_mode, inode->i_rdev);
225 } else {
226 ret = -EIO;
227 goto bad_inode;
228 }
229 unlock_new_inode(inode);
Namjae Jeona2a4a7e2013-04-20 01:28:40 +0900230 trace_f2fs_iget(inode);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900231 return inode;
232
233bad_inode:
234 iget_failed(inode);
Namjae Jeona2a4a7e2013-04-20 01:28:40 +0900235 trace_f2fs_iget_exit(inode, ret);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900236 return ERR_PTR(ret);
237}
238
Jaegeuk Kime8ea9b32016-09-09 16:59:39 -0700239struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino)
240{
241 struct inode *inode;
242retry:
243 inode = f2fs_iget(sb, ino);
244 if (IS_ERR(inode)) {
245 if (PTR_ERR(inode) == -ENOMEM) {
246 congestion_wait(BLK_RW_ASYNC, HZ/50);
247 goto retry;
248 }
249 }
250 return inode;
251}
252
Jaegeuk Kim12719ae2016-01-07 13:23:12 -0800253int update_inode(struct inode *inode, struct page *node_page)
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900254{
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900255 struct f2fs_inode *ri;
Chao Yub691d982016-10-11 22:57:05 +0800256 struct extent_tree *et = F2FS_I(inode)->extent_tree;
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900257
Jaegeuk Kim1e7c48f2016-06-02 14:15:56 -0700258 f2fs_inode_synced(inode);
259
Jaegeuk Kimfec1d652016-01-20 23:43:51 +0800260 f2fs_wait_on_page_writeback(node_page, NODE, true);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900261
Jaegeuk Kim58bfaf42013-12-26 16:30:41 +0900262 ri = F2FS_INODE(node_page);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900263
264 ri->i_mode = cpu_to_le16(inode->i_mode);
265 ri->i_advise = F2FS_I(inode)->i_advise;
266 ri->i_uid = cpu_to_le32(i_uid_read(inode));
267 ri->i_gid = cpu_to_le32(i_gid_read(inode));
268 ri->i_links = cpu_to_le32(inode->i_nlink);
269 ri->i_size = cpu_to_le64(i_size_read(inode));
270 ri->i_blocks = cpu_to_le64(inode->i_blocks);
Chao Yu0c872e22015-02-05 17:46:29 +0800271
Chao Yub691d982016-10-11 22:57:05 +0800272 if (et) {
273 read_lock(&et->lock);
274 set_raw_extent(&et->largest, &ri->i_ext);
275 read_unlock(&et->lock);
276 } else {
Jaegeuk Kim3e72f722015-06-19 17:53:26 -0700277 memset(&ri->i_ext, 0, sizeof(ri->i_ext));
Chao Yub691d982016-10-11 22:57:05 +0800278 }
Jaegeuk Kim91942322016-05-20 10:13:22 -0700279 set_raw_inline(inode, ri);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900280
281 ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
282 ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
283 ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
284 ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
285 ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
286 ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
287 ri->i_current_depth = cpu_to_le32(F2FS_I(inode)->i_current_depth);
288 ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
289 ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
Jaegeuk Kim6666e6a2012-12-10 17:52:48 +0900290 ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900291 ri->i_generation = cpu_to_le32(inode->i_generation);
Jaegeuk Kim38431542014-02-27 18:20:00 +0900292 ri->i_dir_level = F2FS_I(inode)->i_dir_level;
Changman Lee7d79e752013-01-23 09:40:23 +0900293
Jaegeuk Kim3d1e3802013-10-08 18:01:51 +0900294 __set_inode_rdev(inode, ri);
Jaegeuk Kim398b1ac2012-12-19 15:28:39 +0900295 set_cold_node(inode, node_page);
Jaegeuk Kim12719ae2016-01-07 13:23:12 -0800296
Jaegeuk Kim2049d4f2016-01-25 05:57:05 -0800297 /* deleted inode */
298 if (inode->i_nlink == 0)
299 clear_inline_node(node_page);
300
Jaegeuk Kim12719ae2016-01-07 13:23:12 -0800301 return set_page_dirty(node_page);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900302}
303
Jaegeuk Kim12719ae2016-01-07 13:23:12 -0800304int update_inode_page(struct inode *inode)
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900305{
Jaegeuk Kim40813632014-09-02 15:31:18 -0700306 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900307 struct page *node_page;
Jaegeuk Kim12719ae2016-01-07 13:23:12 -0800308 int ret = 0;
Jaegeuk Kim744602c2014-01-24 09:42:16 +0900309retry:
Jaegeuk Kim39936832012-11-22 16:21:29 +0900310 node_page = get_node_page(sbi, inode->i_ino);
Jaegeuk Kim744602c2014-01-24 09:42:16 +0900311 if (IS_ERR(node_page)) {
312 int err = PTR_ERR(node_page);
313 if (err == -ENOMEM) {
314 cond_resched();
315 goto retry;
316 } else if (err != -ENOENT) {
Jaegeuk Kim38f91ca2016-05-18 14:07:56 -0700317 f2fs_stop_checkpoint(sbi, false);
Jaegeuk Kim744602c2014-01-24 09:42:16 +0900318 }
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 Kim18340ed2016-10-19 18:27:56 -0700341 if (update_inode_page(inode) && wbc && wbc->nr_to_write)
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
Chao Yu60dcedc2016-11-02 20:43:21 +0800374 remove_ino_entry(sbi, inode->i_ino, APPEND_INO);
375 remove_ino_entry(sbi, inode->i_ino, UPDATE_INO);
376
Changman Leed6212a52013-01-29 18:30:07 +0900377 sb_start_intwrite(inode->i_sb);
Jaegeuk Kim91942322016-05-20 10:13:22 -0700378 set_inode_flag(inode, FI_NO_ALLOC);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900379 i_size_write(inode, 0);
Jaegeuk Kim4c0c2942016-05-03 09:22:18 -0700380retry:
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900381 if (F2FS_HAS_BLOCKS(inode))
Jaegeuk Kim9a449e92016-06-02 13:49:38 -0700382 err = f2fs_truncate(inode);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900383
Jaegeuk Kim8c1b3c02017-03-07 13:32:20 -0800384#ifdef CONFIG_F2FS_FAULT_INJECTION
385 if (time_to_inject(sbi, FAULT_EVICT_INODE)) {
386 f2fs_show_injection_info(FAULT_EVICT_INODE);
387 err = -EIO;
388 }
389#endif
Chao Yu13ec7292015-08-24 17:40:45 +0800390 if (!err) {
391 f2fs_lock_op(sbi);
392 err = remove_inode_page(inode);
393 f2fs_unlock_op(sbi);
Chao Yua11b9f62016-10-11 22:56:59 +0800394 if (err == -ENOENT)
395 err = 0;
Chao Yu13ec7292015-08-24 17:40:45 +0800396 }
Jaegeuk Kim39936832012-11-22 16:21:29 +0900397
Jaegeuk Kim4c0c2942016-05-03 09:22:18 -0700398 /* give more chances, if ENOMEM case */
399 if (err == -ENOMEM) {
400 err = 0;
401 goto retry;
402 }
403
Jaegeuk Kim0f18b462016-05-20 11:10:10 -0700404 if (err)
405 update_inode_page(inode);
Changman Leed6212a52013-01-29 18:30:07 +0900406 sb_end_intwrite(inode->i_sb);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900407no_delete:
Chao Yud5e8f6c2015-07-15 17:28:53 +0800408 stat_dec_inline_xattr(inode);
Jaegeuk Kim3289c062014-10-13 20:00:16 -0700409 stat_dec_inline_dir(inode);
Jaegeuk Kime7a2bf22014-10-14 10:29:50 -0700410 stat_dec_inline_inode(inode);
Chao Yu0bdee482015-03-19 19:27:51 +0800411
Jaegeuk Kim4f295442017-03-04 13:56:10 -0800412 /* ino == 0, if f2fs_new_inode() was failed t*/
413 if (inode->i_ino)
414 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino,
415 inode->i_ino);
Chao Yu002a41c2014-08-04 09:54:58 +0800416 if (xnid)
417 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
Chao Yu60dcedc2016-11-02 20:43:21 +0800418 if (inode->i_nlink) {
419 if (is_inode_flag_set(inode, FI_APPEND_WRITE))
420 add_ino_entry(sbi, inode->i_ino, APPEND_INO);
421 if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
422 add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
423 }
Jaegeuk Kim91942322016-05-20 10:13:22 -0700424 if (is_inode_flag_set(inode, FI_FREE_NID)) {
Jaegeuk Kim221149c2016-05-02 12:34:48 -0700425 alloc_nid_failed(sbi, inode->i_ino);
Jaegeuk Kim91942322016-05-20 10:13:22 -0700426 clear_inode_flag(inode, FI_FREE_NID);
Jaegeuk Kimc9b63bd2015-06-23 10:36:08 -0700427 }
Jaegeuk Kim29234b12016-05-04 19:48:53 -0700428 f2fs_bug_on(sbi, err &&
429 !exist_written_data(sbi, inode->i_ino, ORPHAN_INO));
Chao Yudbf20cb2014-07-25 12:00:57 +0800430out_clear:
Jaegeuk Kim0b81d072015-05-15 16:26:10 -0700431 fscrypt_put_encryption_info(inode, NULL);
Chao Yudbf20cb2014-07-25 12:00:57 +0800432 clear_inode(inode);
Jaegeuk Kim19f99ce2012-11-02 17:10:40 +0900433}
Jaegeuk Kim44c16152014-09-25 11:55:53 -0700434
435/* caller should call f2fs_lock_op() */
436void handle_failed_inode(struct inode *inode)
437{
438 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Jaegeuk Kim221149c2016-05-02 12:34:48 -0700439 struct node_info ni;
Jaegeuk Kim44c16152014-09-25 11:55:53 -0700440
Chao Yua11b9f62016-10-11 22:56:59 +0800441 /*
442 * clear nlink of inode in order to release resource of inode
443 * immediately.
444 */
445 clear_nlink(inode);
446
447 /*
448 * we must call this to avoid inode being remained as dirty, resulting
449 * in a panic when flushing dirty inodes in gdirty_list.
450 */
451 update_inode_page(inode);
Jaegeuk Kim9bb02c32017-04-11 19:01:26 -0700452 f2fs_inode_synced(inode);
Chao Yua11b9f62016-10-11 22:56:59 +0800453
Jaegeuk Kim221149c2016-05-02 12:34:48 -0700454 /* don't make bad inode, since it becomes a regular file. */
Jaegeuk Kim44c16152014-09-25 11:55:53 -0700455 unlock_new_inode(inode);
456
Chao Yu13ec7292015-08-24 17:40:45 +0800457 /*
Chao Yu13ec7292015-08-24 17:40:45 +0800458 * Note: we should add inode to orphan list before f2fs_unlock_op()
459 * so we can prevent losing this orphan when encoutering checkpoint
460 * and following suddenly power-off.
461 */
Jaegeuk Kim221149c2016-05-02 12:34:48 -0700462 get_node_info(sbi, inode->i_ino, &ni);
463
464 if (ni.blk_addr != NULL_ADDR) {
465 int err = acquire_orphan_inode(sbi);
466 if (err) {
467 set_sbi_flag(sbi, SBI_NEED_FSCK);
468 f2fs_msg(sbi->sb, KERN_WARNING,
469 "Too many orphan inodes, run fsck to fix.");
470 } else {
Jaegeuk Kim67c37582016-06-13 18:27:02 -0700471 add_orphan_inode(inode);
Jaegeuk Kim221149c2016-05-02 12:34:48 -0700472 }
473 alloc_nid_done(sbi, inode->i_ino);
474 } else {
Jaegeuk Kim91942322016-05-20 10:13:22 -0700475 set_inode_flag(inode, FI_FREE_NID);
Chao Yu13ec7292015-08-24 17:40:45 +0800476 }
Jaegeuk Kim44c16152014-09-25 11:55:53 -0700477
Jaegeuk Kim44c16152014-09-25 11:55:53 -0700478 f2fs_unlock_op(sbi);
479
480 /* iput will drop the inode object */
481 iput(inode);
482}