Commit | Line | Data |
---|---|---|
0a8165d7 | 1 | /* |
19f99cee JK |
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 | ||
a2a4a7e4 NJ |
19 | #include <trace/events/f2fs.h> |
20 | ||
19f99cee JK |
21 | void 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 | ||
3d1e3807 JK |
40 | static 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]) | |
6c311ec6 CF |
45 | inode->i_rdev = |
46 | old_decode_dev(le32_to_cpu(ri->i_addr[0])); | |
3d1e3807 | 47 | else |
6c311ec6 CF |
48 | inode->i_rdev = |
49 | new_decode_dev(le32_to_cpu(ri->i_addr[1])); | |
3d1e3807 JK |
50 | } |
51 | } | |
52 | ||
53 | static 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)) { | |
6c311ec6 CF |
57 | ri->i_addr[0] = |
58 | cpu_to_le32(old_encode_dev(inode->i_rdev)); | |
3d1e3807 JK |
59 | ri->i_addr[1] = 0; |
60 | } else { | |
61 | ri->i_addr[0] = 0; | |
6c311ec6 CF |
62 | ri->i_addr[1] = |
63 | cpu_to_le32(new_encode_dev(inode->i_rdev)); | |
3d1e3807 JK |
64 | ri->i_addr[2] = 0; |
65 | } | |
66 | } | |
67 | } | |
68 | ||
19f99cee JK |
69 | static 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; | |
19f99cee JK |
74 | struct f2fs_inode *ri; |
75 | ||
76 | /* Check if ino is within scope */ | |
064e0823 NJ |
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 | } | |
19f99cee JK |
82 | |
83 | node_page = get_node_page(sbi, inode->i_ino); | |
84 | if (IS_ERR(node_page)) | |
85 | return PTR_ERR(node_page); | |
86 | ||
58bfaf44 | 87 | ri = F2FS_INODE(node_page); |
19f99cee JK |
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; | |
19f99cee | 108 | fi->i_advise = ri->i_advise; |
6666e6aa | 109 | fi->i_pino = le32_to_cpu(ri->i_pino); |
3d1e3807 | 110 | |
19f99cee | 111 | get_extent_info(&fi->ext, ri->i_ext); |
444c580f | 112 | get_inline_info(fi, ri); |
3d1e3807 JK |
113 | |
114 | /* get rdev by using inline_info */ | |
115 | __get_inode_rdev(inode, ri); | |
116 | ||
19f99cee JK |
117 | f2fs_put_page(node_page, 1); |
118 | return 0; | |
119 | } | |
120 | ||
121 | struct inode *f2fs_iget(struct super_block *sb, unsigned long ino) | |
122 | { | |
123 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
124 | struct inode *inode; | |
a2a4a7e4 | 125 | int ret = 0; |
19f99cee JK |
126 | |
127 | inode = iget_locked(sb, ino); | |
128 | if (!inode) | |
129 | return ERR_PTR(-ENOMEM); | |
a2a4a7e4 NJ |
130 | |
131 | if (!(inode->i_state & I_NEW)) { | |
132 | trace_f2fs_iget(inode); | |
19f99cee | 133 | return inode; |
a2a4a7e4 | 134 | } |
19f99cee JK |
135 | if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi)) |
136 | goto make_now; | |
137 | ||
138 | ret = do_read_inode(inode); | |
139 | if (ret) | |
140 | goto bad_inode; | |
19f99cee JK |
141 | make_now: |
142 | if (ino == F2FS_NODE_INO(sbi)) { | |
143 | inode->i_mapping->a_ops = &f2fs_node_aops; | |
144 | mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO); | |
145 | } else if (ino == F2FS_META_INO(sbi)) { | |
146 | inode->i_mapping->a_ops = &f2fs_meta_aops; | |
147 | mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO); | |
148 | } else if (S_ISREG(inode->i_mode)) { | |
149 | inode->i_op = &f2fs_file_inode_operations; | |
150 | inode->i_fop = &f2fs_file_operations; | |
151 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
152 | } else if (S_ISDIR(inode->i_mode)) { | |
153 | inode->i_op = &f2fs_dir_inode_operations; | |
154 | inode->i_fop = &f2fs_dir_operations; | |
155 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
6f85b352 | 156 | mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO); |
19f99cee JK |
157 | } else if (S_ISLNK(inode->i_mode)) { |
158 | inode->i_op = &f2fs_symlink_inode_operations; | |
159 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
160 | } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || | |
161 | S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { | |
162 | inode->i_op = &f2fs_special_inode_operations; | |
163 | init_special_inode(inode, inode->i_mode, inode->i_rdev); | |
164 | } else { | |
165 | ret = -EIO; | |
166 | goto bad_inode; | |
167 | } | |
168 | unlock_new_inode(inode); | |
a2a4a7e4 | 169 | trace_f2fs_iget(inode); |
19f99cee JK |
170 | return inode; |
171 | ||
172 | bad_inode: | |
173 | iget_failed(inode); | |
a2a4a7e4 | 174 | trace_f2fs_iget_exit(inode, ret); |
19f99cee JK |
175 | return ERR_PTR(ret); |
176 | } | |
177 | ||
178 | void update_inode(struct inode *inode, struct page *node_page) | |
179 | { | |
19f99cee JK |
180 | struct f2fs_inode *ri; |
181 | ||
5514f0aa | 182 | f2fs_wait_on_page_writeback(node_page, NODE); |
19f99cee | 183 | |
58bfaf44 | 184 | ri = F2FS_INODE(node_page); |
19f99cee JK |
185 | |
186 | ri->i_mode = cpu_to_le16(inode->i_mode); | |
187 | ri->i_advise = F2FS_I(inode)->i_advise; | |
188 | ri->i_uid = cpu_to_le32(i_uid_read(inode)); | |
189 | ri->i_gid = cpu_to_le32(i_gid_read(inode)); | |
190 | ri->i_links = cpu_to_le32(inode->i_nlink); | |
191 | ri->i_size = cpu_to_le64(i_size_read(inode)); | |
192 | ri->i_blocks = cpu_to_le64(inode->i_blocks); | |
193 | set_raw_extent(&F2FS_I(inode)->ext, &ri->i_ext); | |
444c580f | 194 | set_raw_inline(F2FS_I(inode), ri); |
19f99cee JK |
195 | |
196 | ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec); | |
197 | ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); | |
198 | ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec); | |
199 | ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); | |
200 | ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
201 | ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); | |
202 | ri->i_current_depth = cpu_to_le32(F2FS_I(inode)->i_current_depth); | |
203 | ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid); | |
204 | ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags); | |
6666e6aa | 205 | ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino); |
19f99cee | 206 | ri->i_generation = cpu_to_le32(inode->i_generation); |
7d79e75f | 207 | |
3d1e3807 | 208 | __set_inode_rdev(inode, ri); |
398b1ac5 | 209 | set_cold_node(inode, node_page); |
19f99cee | 210 | set_page_dirty(node_page); |
3d1e3807 | 211 | |
b3783873 | 212 | clear_inode_flag(F2FS_I(inode), FI_DIRTY_INODE); |
19f99cee JK |
213 | } |
214 | ||
39936837 | 215 | int update_inode_page(struct inode *inode) |
19f99cee JK |
216 | { |
217 | struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); | |
218 | struct page *node_page; | |
7d82db83 | 219 | |
19f99cee JK |
220 | node_page = get_node_page(sbi, inode->i_ino); |
221 | if (IS_ERR(node_page)) | |
222 | return PTR_ERR(node_page); | |
223 | ||
19f99cee JK |
224 | update_inode(inode, node_page); |
225 | f2fs_put_page(node_page, 1); | |
19f99cee JK |
226 | return 0; |
227 | } | |
228 | ||
39936837 JK |
229 | int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc) |
230 | { | |
231 | struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); | |
e479556b | 232 | int ret; |
39936837 JK |
233 | |
234 | if (inode->i_ino == F2FS_NODE_INO(sbi) || | |
235 | inode->i_ino == F2FS_META_INO(sbi)) | |
236 | return 0; | |
237 | ||
b3783873 JK |
238 | if (!is_inode_flag_set(F2FS_I(inode), FI_DIRTY_INODE)) |
239 | return 0; | |
240 | ||
39936837 JK |
241 | /* |
242 | * We need to lock here to prevent from producing dirty node pages | |
243 | * during the urgent cleaning time when runing out of free sections. | |
244 | */ | |
e479556b | 245 | f2fs_lock_op(sbi); |
39936837 | 246 | ret = update_inode_page(inode); |
e479556b | 247 | f2fs_unlock_op(sbi); |
92c4342f JX |
248 | |
249 | if (wbc) | |
250 | f2fs_balance_fs(sbi); | |
251 | ||
39936837 JK |
252 | return ret; |
253 | } | |
254 | ||
0a8165d7 | 255 | /* |
19f99cee JK |
256 | * Called at the last iput() if i_nlink is zero |
257 | */ | |
258 | void f2fs_evict_inode(struct inode *inode) | |
259 | { | |
260 | struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); | |
261 | ||
a2a4a7e4 | 262 | trace_f2fs_evict_inode(inode); |
19f99cee JK |
263 | truncate_inode_pages(&inode->i_data, 0); |
264 | ||
265 | if (inode->i_ino == F2FS_NODE_INO(sbi) || | |
266 | inode->i_ino == F2FS_META_INO(sbi)) | |
267 | goto no_delete; | |
268 | ||
5d56b671 | 269 | f2fs_bug_on(atomic_read(&F2FS_I(inode)->dirty_dents)); |
19f99cee JK |
270 | remove_dirty_dir_inode(inode); |
271 | ||
272 | if (inode->i_nlink || is_bad_inode(inode)) | |
273 | goto no_delete; | |
274 | ||
d6212a5f | 275 | sb_start_intwrite(inode->i_sb); |
19f99cee JK |
276 | set_inode_flag(F2FS_I(inode), FI_NO_ALLOC); |
277 | i_size_write(inode, 0); | |
278 | ||
279 | if (F2FS_HAS_BLOCKS(inode)) | |
280 | f2fs_truncate(inode); | |
281 | ||
e479556b | 282 | f2fs_lock_op(sbi); |
19f99cee | 283 | remove_inode_page(inode); |
0dbdc2ae | 284 | stat_dec_inline_inode(inode); |
e479556b | 285 | f2fs_unlock_op(sbi); |
39936837 | 286 | |
d6212a5f | 287 | sb_end_intwrite(inode->i_sb); |
19f99cee JK |
288 | no_delete: |
289 | clear_inode(inode); | |
290 | } |