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1/*
2 * 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>
14#include <linux/writeback.h>
15
16#include "f2fs.h"
17#include "node.h"
18
19#include <trace/events/f2fs.h>
20
21void f2fs_set_inode_flags(struct inode *inode)
22{
23 unsigned int flags = F2FS_I(inode)->i_flags;
24
25 inode->i_flags &= ~(S_SYNC | S_APPEND | S_IMMUTABLE |
26 S_NOATIME | S_DIRSYNC);
27
28 if (flags & FS_SYNC_FL)
29 inode->i_flags |= S_SYNC;
30 if (flags & FS_APPEND_FL)
31 inode->i_flags |= S_APPEND;
32 if (flags & FS_IMMUTABLE_FL)
33 inode->i_flags |= S_IMMUTABLE;
34 if (flags & FS_NOATIME_FL)
35 inode->i_flags |= S_NOATIME;
36 if (flags & FS_DIRSYNC_FL)
37 inode->i_flags |= S_DIRSYNC;
38}
39
40static void __get_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
41{
42 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
43 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
44 if (ri->i_addr[0])
45 inode->i_rdev =
46 old_decode_dev(le32_to_cpu(ri->i_addr[0]));
47 else
48 inode->i_rdev =
49 new_decode_dev(le32_to_cpu(ri->i_addr[1]));
50 }
51}
52
53static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
54{
55 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
56 if (old_valid_dev(inode->i_rdev)) {
57 ri->i_addr[0] =
58 cpu_to_le32(old_encode_dev(inode->i_rdev));
59 ri->i_addr[1] = 0;
60 } else {
61 ri->i_addr[0] = 0;
62 ri->i_addr[1] =
63 cpu_to_le32(new_encode_dev(inode->i_rdev));
64 ri->i_addr[2] = 0;
65 }
66 }
67}
68
69static int do_read_inode(struct inode *inode)
70{
71 struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
72 struct f2fs_inode_info *fi = F2FS_I(inode);
73 struct page *node_page;
74 struct f2fs_inode *ri;
75
76 /* Check if ino is within scope */
77 if (check_nid_range(sbi, inode->i_ino)) {
78 f2fs_msg(inode->i_sb, KERN_ERR, "bad inode number: %lu",
79 (unsigned long) inode->i_ino);
80 return -EINVAL;
81 }
82
83 node_page = get_node_page(sbi, inode->i_ino);
84 if (IS_ERR(node_page))
85 return PTR_ERR(node_page);
86
87 ri = F2FS_INODE(node_page);
88
89 inode->i_mode = le16_to_cpu(ri->i_mode);
90 i_uid_write(inode, le32_to_cpu(ri->i_uid));
91 i_gid_write(inode, le32_to_cpu(ri->i_gid));
92 set_nlink(inode, le32_to_cpu(ri->i_links));
93 inode->i_size = le64_to_cpu(ri->i_size);
94 inode->i_blocks = le64_to_cpu(ri->i_blocks);
95
96 inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
97 inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
98 inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
99 inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
100 inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
101 inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
102 inode->i_generation = le32_to_cpu(ri->i_generation);
103
104 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
105 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
106 fi->i_flags = le32_to_cpu(ri->i_flags);
107 fi->flags = 0;
108 fi->i_advise = ri->i_advise;
109 fi->i_pino = le32_to_cpu(ri->i_pino);
110 fi->i_dir_level = ri->i_dir_level;
111
112 get_extent_info(&fi->ext, ri->i_ext);
113 get_inline_info(fi, ri);
114
115 /* get rdev by using inline_info */
116 __get_inode_rdev(inode, ri);
117
118 f2fs_put_page(node_page, 1);
119 return 0;
120}
121
122struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
123{
124 struct f2fs_sb_info *sbi = F2FS_SB(sb);
125 struct inode *inode;
126 int ret = 0;
127
128 inode = iget_locked(sb, ino);
129 if (!inode)
130 return ERR_PTR(-ENOMEM);
131
132 if (!(inode->i_state & I_NEW)) {
133 trace_f2fs_iget(inode);
134 return inode;
135 }
136 if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi))
137 goto make_now;
138
139 ret = do_read_inode(inode);
140 if (ret)
141 goto bad_inode;
142make_now:
143 if (ino == F2FS_NODE_INO(sbi)) {
144 inode->i_mapping->a_ops = &f2fs_node_aops;
145 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
146 } else if (ino == F2FS_META_INO(sbi)) {
147 inode->i_mapping->a_ops = &f2fs_meta_aops;
148 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
149 } else if (S_ISREG(inode->i_mode)) {
150 inode->i_op = &f2fs_file_inode_operations;
151 inode->i_fop = &f2fs_file_operations;
152 inode->i_mapping->a_ops = &f2fs_dblock_aops;
153 } else if (S_ISDIR(inode->i_mode)) {
154 inode->i_op = &f2fs_dir_inode_operations;
155 inode->i_fop = &f2fs_dir_operations;
156 inode->i_mapping->a_ops = &f2fs_dblock_aops;
157 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
158 } else if (S_ISLNK(inode->i_mode)) {
159 inode->i_op = &f2fs_symlink_inode_operations;
160 inode->i_mapping->a_ops = &f2fs_dblock_aops;
161 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
162 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
163 inode->i_op = &f2fs_special_inode_operations;
164 init_special_inode(inode, inode->i_mode, inode->i_rdev);
165 } else {
166 ret = -EIO;
167 goto bad_inode;
168 }
169 unlock_new_inode(inode);
170 trace_f2fs_iget(inode);
171 return inode;
172
173bad_inode:
174 iget_failed(inode);
175 trace_f2fs_iget_exit(inode, ret);
176 return ERR_PTR(ret);
177}
178
179void update_inode(struct inode *inode, struct page *node_page)
180{
181 struct f2fs_inode *ri;
182
183 f2fs_wait_on_page_writeback(node_page, NODE);
184
185 ri = F2FS_INODE(node_page);
186
187 ri->i_mode = cpu_to_le16(inode->i_mode);
188 ri->i_advise = F2FS_I(inode)->i_advise;
189 ri->i_uid = cpu_to_le32(i_uid_read(inode));
190 ri->i_gid = cpu_to_le32(i_gid_read(inode));
191 ri->i_links = cpu_to_le32(inode->i_nlink);
192 ri->i_size = cpu_to_le64(i_size_read(inode));
193 ri->i_blocks = cpu_to_le64(inode->i_blocks);
194 set_raw_extent(&F2FS_I(inode)->ext, &ri->i_ext);
195 set_raw_inline(F2FS_I(inode), ri);
196
197 ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
198 ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
199 ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
200 ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
201 ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
202 ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
203 ri->i_current_depth = cpu_to_le32(F2FS_I(inode)->i_current_depth);
204 ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
205 ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
206 ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
207 ri->i_generation = cpu_to_le32(inode->i_generation);
208 ri->i_dir_level = F2FS_I(inode)->i_dir_level;
209
210 __set_inode_rdev(inode, ri);
211 set_cold_node(inode, node_page);
212 set_page_dirty(node_page);
213
214 clear_inode_flag(F2FS_I(inode), FI_DIRTY_INODE);
215}
216
217void update_inode_page(struct inode *inode)
218{
219 struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
220 struct page *node_page;
221retry:
222 node_page = get_node_page(sbi, inode->i_ino);
223 if (IS_ERR(node_page)) {
224 int err = PTR_ERR(node_page);
225 if (err == -ENOMEM) {
226 cond_resched();
227 goto retry;
228 } else if (err != -ENOENT) {
229 f2fs_stop_checkpoint(sbi);
230 }
231 return;
232 }
233 update_inode(inode, node_page);
234 f2fs_put_page(node_page, 1);
235}
236
237int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
238{
239 struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
240
241 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
242 inode->i_ino == F2FS_META_INO(sbi))
243 return 0;
244
245 if (!is_inode_flag_set(F2FS_I(inode), FI_DIRTY_INODE))
246 return 0;
247
248 /*
249 * We need to lock here to prevent from producing dirty node pages
250 * during the urgent cleaning time when runing out of free sections.
251 */
252 f2fs_lock_op(sbi);
253 update_inode_page(inode);
254 f2fs_unlock_op(sbi);
255
256 if (wbc)
257 f2fs_balance_fs(sbi);
258
259 return 0;
260}
261
262/*
263 * Called at the last iput() if i_nlink is zero
264 */
265void f2fs_evict_inode(struct inode *inode)
266{
267 struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
268
269 trace_f2fs_evict_inode(inode);
270 truncate_inode_pages_final(&inode->i_data);
271
272 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
273 inode->i_ino == F2FS_META_INO(sbi))
274 goto no_delete;
275
276 f2fs_bug_on(get_dirty_dents(inode));
277 remove_dirty_dir_inode(inode);
278
279 if (inode->i_nlink || is_bad_inode(inode))
280 goto no_delete;
281
282 sb_start_intwrite(inode->i_sb);
283 set_inode_flag(F2FS_I(inode), FI_NO_ALLOC);
284 i_size_write(inode, 0);
285
286 if (F2FS_HAS_BLOCKS(inode))
287 f2fs_truncate(inode);
288
289 f2fs_lock_op(sbi);
290 remove_inode_page(inode);
291 stat_dec_inline_inode(inode);
292 f2fs_unlock_op(sbi);
293
294 sb_end_intwrite(inode->i_sb);
295no_delete:
296 clear_inode(inode);
297}
1/*
2 * 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>
14#include <linux/backing-dev.h>
15#include <linux/writeback.h>
16
17#include "f2fs.h"
18#include "node.h"
19#include "segment.h"
20
21#include <trace/events/f2fs.h>
22
23void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync)
24{
25 if (is_inode_flag_set(inode, FI_NEW_INODE))
26 return;
27
28 if (f2fs_inode_dirtied(inode, sync))
29 return;
30
31 mark_inode_dirty_sync(inode);
32}
33
34void f2fs_set_inode_flags(struct inode *inode)
35{
36 unsigned int flags = F2FS_I(inode)->i_flags;
37 unsigned int new_fl = 0;
38
39 if (flags & FS_SYNC_FL)
40 new_fl |= S_SYNC;
41 if (flags & FS_APPEND_FL)
42 new_fl |= S_APPEND;
43 if (flags & FS_IMMUTABLE_FL)
44 new_fl |= S_IMMUTABLE;
45 if (flags & FS_NOATIME_FL)
46 new_fl |= S_NOATIME;
47 if (flags & FS_DIRSYNC_FL)
48 new_fl |= S_DIRSYNC;
49 if (f2fs_encrypted_inode(inode))
50 new_fl |= S_ENCRYPTED;
51 inode_set_flags(inode, new_fl,
52 S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC|
53 S_ENCRYPTED);
54}
55
56static void __get_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
57{
58 int extra_size = get_extra_isize(inode);
59
60 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
61 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
62 if (ri->i_addr[extra_size])
63 inode->i_rdev = old_decode_dev(
64 le32_to_cpu(ri->i_addr[extra_size]));
65 else
66 inode->i_rdev = new_decode_dev(
67 le32_to_cpu(ri->i_addr[extra_size + 1]));
68 }
69}
70
71static bool __written_first_block(struct f2fs_inode *ri)
72{
73 block_t addr = le32_to_cpu(ri->i_addr[offset_in_addr(ri)]);
74
75 if (addr != NEW_ADDR && addr != NULL_ADDR)
76 return true;
77 return false;
78}
79
80static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
81{
82 int extra_size = get_extra_isize(inode);
83
84 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
85 if (old_valid_dev(inode->i_rdev)) {
86 ri->i_addr[extra_size] =
87 cpu_to_le32(old_encode_dev(inode->i_rdev));
88 ri->i_addr[extra_size + 1] = 0;
89 } else {
90 ri->i_addr[extra_size] = 0;
91 ri->i_addr[extra_size + 1] =
92 cpu_to_le32(new_encode_dev(inode->i_rdev));
93 ri->i_addr[extra_size + 2] = 0;
94 }
95 }
96}
97
98static void __recover_inline_status(struct inode *inode, struct page *ipage)
99{
100 void *inline_data = inline_data_addr(inode, ipage);
101 __le32 *start = inline_data;
102 __le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32);
103
104 while (start < end) {
105 if (*start++) {
106 f2fs_wait_on_page_writeback(ipage, NODE, true);
107
108 set_inode_flag(inode, FI_DATA_EXIST);
109 set_raw_inline(inode, F2FS_INODE(ipage));
110 set_page_dirty(ipage);
111 return;
112 }
113 }
114 return;
115}
116
117static bool f2fs_enable_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
118{
119 struct f2fs_inode *ri = &F2FS_NODE(page)->i;
120 int extra_isize = le32_to_cpu(ri->i_extra_isize);
121
122 if (!f2fs_sb_has_inode_chksum(sbi->sb))
123 return false;
124
125 if (!RAW_IS_INODE(F2FS_NODE(page)) || !(ri->i_inline & F2FS_EXTRA_ATTR))
126 return false;
127
128 if (!F2FS_FITS_IN_INODE(ri, extra_isize, i_inode_checksum))
129 return false;
130
131 return true;
132}
133
134static __u32 f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
135{
136 struct f2fs_node *node = F2FS_NODE(page);
137 struct f2fs_inode *ri = &node->i;
138 __le32 ino = node->footer.ino;
139 __le32 gen = ri->i_generation;
140 __u32 chksum, chksum_seed;
141 __u32 dummy_cs = 0;
142 unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum);
143 unsigned int cs_size = sizeof(dummy_cs);
144
145 chksum = f2fs_chksum(sbi, sbi->s_chksum_seed, (__u8 *)&ino,
146 sizeof(ino));
147 chksum_seed = f2fs_chksum(sbi, chksum, (__u8 *)&gen, sizeof(gen));
148
149 chksum = f2fs_chksum(sbi, chksum_seed, (__u8 *)ri, offset);
150 chksum = f2fs_chksum(sbi, chksum, (__u8 *)&dummy_cs, cs_size);
151 offset += cs_size;
152 chksum = f2fs_chksum(sbi, chksum, (__u8 *)ri + offset,
153 F2FS_BLKSIZE - offset);
154 return chksum;
155}
156
157bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page)
158{
159 struct f2fs_inode *ri;
160 __u32 provided, calculated;
161
162 if (!f2fs_enable_inode_chksum(sbi, page) ||
163 PageDirty(page) || PageWriteback(page))
164 return true;
165
166 ri = &F2FS_NODE(page)->i;
167 provided = le32_to_cpu(ri->i_inode_checksum);
168 calculated = f2fs_inode_chksum(sbi, page);
169
170 if (provided != calculated)
171 f2fs_msg(sbi->sb, KERN_WARNING,
172 "checksum invalid, ino = %x, %x vs. %x",
173 ino_of_node(page), provided, calculated);
174
175 return provided == calculated;
176}
177
178void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page)
179{
180 struct f2fs_inode *ri = &F2FS_NODE(page)->i;
181
182 if (!f2fs_enable_inode_chksum(sbi, page))
183 return;
184
185 ri->i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(sbi, page));
186}
187
188static int do_read_inode(struct inode *inode)
189{
190 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
191 struct f2fs_inode_info *fi = F2FS_I(inode);
192 struct page *node_page;
193 struct f2fs_inode *ri;
194 projid_t i_projid;
195
196 /* Check if ino is within scope */
197 if (check_nid_range(sbi, inode->i_ino)) {
198 f2fs_msg(inode->i_sb, KERN_ERR, "bad inode number: %lu",
199 (unsigned long) inode->i_ino);
200 WARN_ON(1);
201 return -EINVAL;
202 }
203
204 node_page = get_node_page(sbi, inode->i_ino);
205 if (IS_ERR(node_page))
206 return PTR_ERR(node_page);
207
208 ri = F2FS_INODE(node_page);
209
210 inode->i_mode = le16_to_cpu(ri->i_mode);
211 i_uid_write(inode, le32_to_cpu(ri->i_uid));
212 i_gid_write(inode, le32_to_cpu(ri->i_gid));
213 set_nlink(inode, le32_to_cpu(ri->i_links));
214 inode->i_size = le64_to_cpu(ri->i_size);
215 inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1);
216
217 inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
218 inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
219 inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
220 inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
221 inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
222 inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
223 inode->i_generation = le32_to_cpu(ri->i_generation);
224
225 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
226 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
227 fi->i_flags = le32_to_cpu(ri->i_flags);
228 fi->flags = 0;
229 fi->i_advise = ri->i_advise;
230 fi->i_pino = le32_to_cpu(ri->i_pino);
231 fi->i_dir_level = ri->i_dir_level;
232
233 if (f2fs_init_extent_tree(inode, &ri->i_ext))
234 set_page_dirty(node_page);
235
236 get_inline_info(inode, ri);
237
238 fi->i_extra_isize = f2fs_has_extra_attr(inode) ?
239 le16_to_cpu(ri->i_extra_isize) : 0;
240
241 if (f2fs_sb_has_flexible_inline_xattr(sbi->sb)) {
242 f2fs_bug_on(sbi, !f2fs_has_extra_attr(inode));
243 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size);
244 } else if (f2fs_has_inline_xattr(inode) ||
245 f2fs_has_inline_dentry(inode)) {
246 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
247 } else {
248
249 /*
250 * Previous inline data or directory always reserved 200 bytes
251 * in inode layout, even if inline_xattr is disabled. In order
252 * to keep inline_dentry's structure for backward compatibility,
253 * we get the space back only from inline_data.
254 */
255 fi->i_inline_xattr_size = 0;
256 }
257
258 /* check data exist */
259 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
260 __recover_inline_status(inode, node_page);
261
262 /* get rdev by using inline_info */
263 __get_inode_rdev(inode, ri);
264
265 if (__written_first_block(ri))
266 set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN);
267
268 if (!need_inode_block_update(sbi, inode->i_ino))
269 fi->last_disk_size = inode->i_size;
270
271 if (fi->i_flags & FS_PROJINHERIT_FL)
272 set_inode_flag(inode, FI_PROJ_INHERIT);
273
274 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi->sb) &&
275 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
276 i_projid = (projid_t)le32_to_cpu(ri->i_projid);
277 else
278 i_projid = F2FS_DEF_PROJID;
279 fi->i_projid = make_kprojid(&init_user_ns, i_projid);
280
281 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi->sb) &&
282 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
283 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime);
284 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec);
285 }
286
287 F2FS_I(inode)->i_disk_time[0] = inode->i_atime;
288 F2FS_I(inode)->i_disk_time[1] = inode->i_ctime;
289 F2FS_I(inode)->i_disk_time[2] = inode->i_mtime;
290 F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime;
291 f2fs_put_page(node_page, 1);
292
293 stat_inc_inline_xattr(inode);
294 stat_inc_inline_inode(inode);
295 stat_inc_inline_dir(inode);
296
297 return 0;
298}
299
300struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
301{
302 struct f2fs_sb_info *sbi = F2FS_SB(sb);
303 struct inode *inode;
304 int ret = 0;
305
306 inode = iget_locked(sb, ino);
307 if (!inode)
308 return ERR_PTR(-ENOMEM);
309
310 if (!(inode->i_state & I_NEW)) {
311 trace_f2fs_iget(inode);
312 return inode;
313 }
314 if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi))
315 goto make_now;
316
317 ret = do_read_inode(inode);
318 if (ret)
319 goto bad_inode;
320make_now:
321 if (ino == F2FS_NODE_INO(sbi)) {
322 inode->i_mapping->a_ops = &f2fs_node_aops;
323 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
324 } else if (ino == F2FS_META_INO(sbi)) {
325 inode->i_mapping->a_ops = &f2fs_meta_aops;
326 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
327 } else if (S_ISREG(inode->i_mode)) {
328 inode->i_op = &f2fs_file_inode_operations;
329 inode->i_fop = &f2fs_file_operations;
330 inode->i_mapping->a_ops = &f2fs_dblock_aops;
331 } else if (S_ISDIR(inode->i_mode)) {
332 inode->i_op = &f2fs_dir_inode_operations;
333 inode->i_fop = &f2fs_dir_operations;
334 inode->i_mapping->a_ops = &f2fs_dblock_aops;
335 inode_nohighmem(inode);
336 } else if (S_ISLNK(inode->i_mode)) {
337 if (f2fs_encrypted_inode(inode))
338 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
339 else
340 inode->i_op = &f2fs_symlink_inode_operations;
341 inode_nohighmem(inode);
342 inode->i_mapping->a_ops = &f2fs_dblock_aops;
343 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
344 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
345 inode->i_op = &f2fs_special_inode_operations;
346 init_special_inode(inode, inode->i_mode, inode->i_rdev);
347 } else {
348 ret = -EIO;
349 goto bad_inode;
350 }
351 f2fs_set_inode_flags(inode);
352 unlock_new_inode(inode);
353 trace_f2fs_iget(inode);
354 return inode;
355
356bad_inode:
357 iget_failed(inode);
358 trace_f2fs_iget_exit(inode, ret);
359 return ERR_PTR(ret);
360}
361
362struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino)
363{
364 struct inode *inode;
365retry:
366 inode = f2fs_iget(sb, ino);
367 if (IS_ERR(inode)) {
368 if (PTR_ERR(inode) == -ENOMEM) {
369 congestion_wait(BLK_RW_ASYNC, HZ/50);
370 goto retry;
371 }
372 }
373 return inode;
374}
375
376void update_inode(struct inode *inode, struct page *node_page)
377{
378 struct f2fs_inode *ri;
379 struct extent_tree *et = F2FS_I(inode)->extent_tree;
380
381 f2fs_wait_on_page_writeback(node_page, NODE, true);
382 set_page_dirty(node_page);
383
384 f2fs_inode_synced(inode);
385
386 ri = F2FS_INODE(node_page);
387
388 ri->i_mode = cpu_to_le16(inode->i_mode);
389 ri->i_advise = F2FS_I(inode)->i_advise;
390 ri->i_uid = cpu_to_le32(i_uid_read(inode));
391 ri->i_gid = cpu_to_le32(i_gid_read(inode));
392 ri->i_links = cpu_to_le32(inode->i_nlink);
393 ri->i_size = cpu_to_le64(i_size_read(inode));
394 ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1);
395
396 if (et) {
397 read_lock(&et->lock);
398 set_raw_extent(&et->largest, &ri->i_ext);
399 read_unlock(&et->lock);
400 } else {
401 memset(&ri->i_ext, 0, sizeof(ri->i_ext));
402 }
403 set_raw_inline(inode, ri);
404
405 ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
406 ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
407 ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
408 ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
409 ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
410 ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
411 ri->i_current_depth = cpu_to_le32(F2FS_I(inode)->i_current_depth);
412 ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
413 ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
414 ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
415 ri->i_generation = cpu_to_le32(inode->i_generation);
416 ri->i_dir_level = F2FS_I(inode)->i_dir_level;
417
418 if (f2fs_has_extra_attr(inode)) {
419 ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize);
420
421 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode)->sb))
422 ri->i_inline_xattr_size =
423 cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size);
424
425 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)->sb) &&
426 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
427 i_projid)) {
428 projid_t i_projid;
429
430 i_projid = from_kprojid(&init_user_ns,
431 F2FS_I(inode)->i_projid);
432 ri->i_projid = cpu_to_le32(i_projid);
433 }
434
435 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)->sb) &&
436 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
437 i_crtime)) {
438 ri->i_crtime =
439 cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec);
440 ri->i_crtime_nsec =
441 cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec);
442 }
443 }
444
445 __set_inode_rdev(inode, ri);
446
447 /* deleted inode */
448 if (inode->i_nlink == 0)
449 clear_inline_node(node_page);
450
451 F2FS_I(inode)->i_disk_time[0] = inode->i_atime;
452 F2FS_I(inode)->i_disk_time[1] = inode->i_ctime;
453 F2FS_I(inode)->i_disk_time[2] = inode->i_mtime;
454 F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime;
455}
456
457void update_inode_page(struct inode *inode)
458{
459 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
460 struct page *node_page;
461retry:
462 node_page = get_node_page(sbi, inode->i_ino);
463 if (IS_ERR(node_page)) {
464 int err = PTR_ERR(node_page);
465 if (err == -ENOMEM) {
466 cond_resched();
467 goto retry;
468 } else if (err != -ENOENT) {
469 f2fs_stop_checkpoint(sbi, false);
470 }
471 return;
472 }
473 update_inode(inode, node_page);
474 f2fs_put_page(node_page, 1);
475}
476
477int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
478{
479 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
480
481 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
482 inode->i_ino == F2FS_META_INO(sbi))
483 return 0;
484
485 if (!is_inode_flag_set(inode, FI_DIRTY_INODE))
486 return 0;
487
488 /*
489 * We need to balance fs here to prevent from producing dirty node pages
490 * during the urgent cleaning time when runing out of free sections.
491 */
492 update_inode_page(inode);
493 if (wbc && wbc->nr_to_write)
494 f2fs_balance_fs(sbi, true);
495 return 0;
496}
497
498/*
499 * Called at the last iput() if i_nlink is zero
500 */
501void f2fs_evict_inode(struct inode *inode)
502{
503 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
504 nid_t xnid = F2FS_I(inode)->i_xattr_nid;
505 int err = 0;
506
507 /* some remained atomic pages should discarded */
508 if (f2fs_is_atomic_file(inode))
509 drop_inmem_pages(inode);
510
511 trace_f2fs_evict_inode(inode);
512 truncate_inode_pages_final(&inode->i_data);
513
514 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
515 inode->i_ino == F2FS_META_INO(sbi))
516 goto out_clear;
517
518 f2fs_bug_on(sbi, get_dirty_pages(inode));
519 remove_dirty_inode(inode);
520
521 f2fs_destroy_extent_tree(inode);
522
523 if (inode->i_nlink || is_bad_inode(inode))
524 goto no_delete;
525
526 dquot_initialize(inode);
527
528 remove_ino_entry(sbi, inode->i_ino, APPEND_INO);
529 remove_ino_entry(sbi, inode->i_ino, UPDATE_INO);
530 remove_ino_entry(sbi, inode->i_ino, FLUSH_INO);
531
532 sb_start_intwrite(inode->i_sb);
533 set_inode_flag(inode, FI_NO_ALLOC);
534 i_size_write(inode, 0);
535retry:
536 if (F2FS_HAS_BLOCKS(inode))
537 err = f2fs_truncate(inode);
538
539#ifdef CONFIG_F2FS_FAULT_INJECTION
540 if (time_to_inject(sbi, FAULT_EVICT_INODE)) {
541 f2fs_show_injection_info(FAULT_EVICT_INODE);
542 err = -EIO;
543 }
544#endif
545 if (!err) {
546 f2fs_lock_op(sbi);
547 err = remove_inode_page(inode);
548 f2fs_unlock_op(sbi);
549 if (err == -ENOENT)
550 err = 0;
551 }
552
553 /* give more chances, if ENOMEM case */
554 if (err == -ENOMEM) {
555 err = 0;
556 goto retry;
557 }
558
559 if (err)
560 update_inode_page(inode);
561 dquot_free_inode(inode);
562 sb_end_intwrite(inode->i_sb);
563no_delete:
564 dquot_drop(inode);
565
566 stat_dec_inline_xattr(inode);
567 stat_dec_inline_dir(inode);
568 stat_dec_inline_inode(inode);
569
570 if (likely(!is_set_ckpt_flags(sbi, CP_ERROR_FLAG)))
571 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE));
572 else
573 f2fs_inode_synced(inode);
574
575 /* ino == 0, if f2fs_new_inode() was failed t*/
576 if (inode->i_ino)
577 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino,
578 inode->i_ino);
579 if (xnid)
580 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
581 if (inode->i_nlink) {
582 if (is_inode_flag_set(inode, FI_APPEND_WRITE))
583 add_ino_entry(sbi, inode->i_ino, APPEND_INO);
584 if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
585 add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
586 }
587 if (is_inode_flag_set(inode, FI_FREE_NID)) {
588 alloc_nid_failed(sbi, inode->i_ino);
589 clear_inode_flag(inode, FI_FREE_NID);
590 } else {
591 f2fs_bug_on(sbi, err &&
592 !exist_written_data(sbi, inode->i_ino, ORPHAN_INO));
593 }
594out_clear:
595 fscrypt_put_encryption_info(inode);
596 clear_inode(inode);
597}
598
599/* caller should call f2fs_lock_op() */
600void handle_failed_inode(struct inode *inode)
601{
602 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
603 struct node_info ni;
604
605 /*
606 * clear nlink of inode in order to release resource of inode
607 * immediately.
608 */
609 clear_nlink(inode);
610
611 /*
612 * we must call this to avoid inode being remained as dirty, resulting
613 * in a panic when flushing dirty inodes in gdirty_list.
614 */
615 update_inode_page(inode);
616 f2fs_inode_synced(inode);
617
618 /* don't make bad inode, since it becomes a regular file. */
619 unlock_new_inode(inode);
620
621 /*
622 * Note: we should add inode to orphan list before f2fs_unlock_op()
623 * so we can prevent losing this orphan when encoutering checkpoint
624 * and following suddenly power-off.
625 */
626 get_node_info(sbi, inode->i_ino, &ni);
627
628 if (ni.blk_addr != NULL_ADDR) {
629 int err = acquire_orphan_inode(sbi);
630 if (err) {
631 set_sbi_flag(sbi, SBI_NEED_FSCK);
632 f2fs_msg(sbi->sb, KERN_WARNING,
633 "Too many orphan inodes, run fsck to fix.");
634 } else {
635 add_orphan_inode(inode);
636 }
637 alloc_nid_done(sbi, inode->i_ino);
638 } else {
639 set_inode_flag(inode, FI_FREE_NID);
640 }
641
642 f2fs_unlock_op(sbi);
643
644 /* iput will drop the inode object */
645 iput(inode);
646}