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> | |
8abfb36a | 15 | #include <linux/bitops.h> |
19f99cee JK |
16 | |
17 | #include "f2fs.h" | |
18 | #include "node.h" | |
19 | ||
a2a4a7e4 NJ |
20 | #include <trace/events/f2fs.h> |
21 | ||
19f99cee JK |
22 | void f2fs_set_inode_flags(struct inode *inode) |
23 | { | |
24 | unsigned int flags = F2FS_I(inode)->i_flags; | |
8abfb36a | 25 | unsigned int new_fl = 0; |
19f99cee JK |
26 | |
27 | if (flags & FS_SYNC_FL) | |
8abfb36a | 28 | new_fl |= S_SYNC; |
19f99cee | 29 | if (flags & FS_APPEND_FL) |
8abfb36a | 30 | new_fl |= S_APPEND; |
19f99cee | 31 | if (flags & FS_IMMUTABLE_FL) |
8abfb36a | 32 | new_fl |= S_IMMUTABLE; |
19f99cee | 33 | if (flags & FS_NOATIME_FL) |
8abfb36a | 34 | new_fl |= S_NOATIME; |
19f99cee | 35 | if (flags & FS_DIRSYNC_FL) |
8abfb36a ZZ |
36 | new_fl |= S_DIRSYNC; |
37 | set_mask_bits(&inode->i_flags, | |
38 | S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC, new_fl); | |
19f99cee JK |
39 | } |
40 | ||
3d1e3807 JK |
41 | static void __get_inode_rdev(struct inode *inode, struct f2fs_inode *ri) |
42 | { | |
43 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || | |
44 | S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { | |
45 | if (ri->i_addr[0]) | |
6c311ec6 CF |
46 | inode->i_rdev = |
47 | old_decode_dev(le32_to_cpu(ri->i_addr[0])); | |
3d1e3807 | 48 | else |
6c311ec6 CF |
49 | inode->i_rdev = |
50 | new_decode_dev(le32_to_cpu(ri->i_addr[1])); | |
3d1e3807 JK |
51 | } |
52 | } | |
53 | ||
54 | static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri) | |
55 | { | |
56 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { | |
57 | if (old_valid_dev(inode->i_rdev)) { | |
6c311ec6 CF |
58 | ri->i_addr[0] = |
59 | cpu_to_le32(old_encode_dev(inode->i_rdev)); | |
3d1e3807 JK |
60 | ri->i_addr[1] = 0; |
61 | } else { | |
62 | ri->i_addr[0] = 0; | |
6c311ec6 CF |
63 | ri->i_addr[1] = |
64 | cpu_to_le32(new_encode_dev(inode->i_rdev)); | |
3d1e3807 JK |
65 | ri->i_addr[2] = 0; |
66 | } | |
67 | } | |
68 | } | |
69 | ||
19f99cee JK |
70 | static int do_read_inode(struct inode *inode) |
71 | { | |
72 | struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); | |
73 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
74 | struct page *node_page; | |
19f99cee JK |
75 | struct f2fs_inode *ri; |
76 | ||
77 | /* Check if ino is within scope */ | |
064e0823 NJ |
78 | if (check_nid_range(sbi, inode->i_ino)) { |
79 | f2fs_msg(inode->i_sb, KERN_ERR, "bad inode number: %lu", | |
80 | (unsigned long) inode->i_ino); | |
81 | return -EINVAL; | |
82 | } | |
19f99cee JK |
83 | |
84 | node_page = get_node_page(sbi, inode->i_ino); | |
85 | if (IS_ERR(node_page)) | |
86 | return PTR_ERR(node_page); | |
87 | ||
58bfaf44 | 88 | ri = F2FS_INODE(node_page); |
19f99cee JK |
89 | |
90 | inode->i_mode = le16_to_cpu(ri->i_mode); | |
91 | i_uid_write(inode, le32_to_cpu(ri->i_uid)); | |
92 | i_gid_write(inode, le32_to_cpu(ri->i_gid)); | |
93 | set_nlink(inode, le32_to_cpu(ri->i_links)); | |
94 | inode->i_size = le64_to_cpu(ri->i_size); | |
95 | inode->i_blocks = le64_to_cpu(ri->i_blocks); | |
96 | ||
97 | inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime); | |
98 | inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime); | |
99 | inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime); | |
100 | inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec); | |
101 | inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec); | |
102 | inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec); | |
103 | inode->i_generation = le32_to_cpu(ri->i_generation); | |
104 | ||
105 | fi->i_current_depth = le32_to_cpu(ri->i_current_depth); | |
106 | fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid); | |
107 | fi->i_flags = le32_to_cpu(ri->i_flags); | |
108 | fi->flags = 0; | |
19f99cee | 109 | fi->i_advise = ri->i_advise; |
6666e6aa | 110 | fi->i_pino = le32_to_cpu(ri->i_pino); |
38431545 | 111 | fi->i_dir_level = ri->i_dir_level; |
3d1e3807 | 112 | |
19f99cee | 113 | get_extent_info(&fi->ext, ri->i_ext); |
444c580f | 114 | get_inline_info(fi, ri); |
3d1e3807 JK |
115 | |
116 | /* get rdev by using inline_info */ | |
117 | __get_inode_rdev(inode, ri); | |
118 | ||
19f99cee JK |
119 | f2fs_put_page(node_page, 1); |
120 | return 0; | |
121 | } | |
122 | ||
123 | struct inode *f2fs_iget(struct super_block *sb, unsigned long ino) | |
124 | { | |
125 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
126 | struct inode *inode; | |
a2a4a7e4 | 127 | int ret = 0; |
19f99cee JK |
128 | |
129 | inode = iget_locked(sb, ino); | |
130 | if (!inode) | |
131 | return ERR_PTR(-ENOMEM); | |
a2a4a7e4 NJ |
132 | |
133 | if (!(inode->i_state & I_NEW)) { | |
134 | trace_f2fs_iget(inode); | |
19f99cee | 135 | return inode; |
a2a4a7e4 | 136 | } |
19f99cee JK |
137 | if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi)) |
138 | goto make_now; | |
139 | ||
140 | ret = do_read_inode(inode); | |
141 | if (ret) | |
142 | goto bad_inode; | |
19f99cee JK |
143 | make_now: |
144 | if (ino == F2FS_NODE_INO(sbi)) { | |
145 | inode->i_mapping->a_ops = &f2fs_node_aops; | |
146 | mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO); | |
147 | } else if (ino == F2FS_META_INO(sbi)) { | |
148 | inode->i_mapping->a_ops = &f2fs_meta_aops; | |
149 | mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO); | |
150 | } else if (S_ISREG(inode->i_mode)) { | |
151 | inode->i_op = &f2fs_file_inode_operations; | |
152 | inode->i_fop = &f2fs_file_operations; | |
153 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
154 | } else if (S_ISDIR(inode->i_mode)) { | |
155 | inode->i_op = &f2fs_dir_inode_operations; | |
156 | inode->i_fop = &f2fs_dir_operations; | |
157 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
6f85b352 | 158 | mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO); |
19f99cee JK |
159 | } else if (S_ISLNK(inode->i_mode)) { |
160 | inode->i_op = &f2fs_symlink_inode_operations; | |
161 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
162 | } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || | |
163 | S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { | |
164 | inode->i_op = &f2fs_special_inode_operations; | |
165 | init_special_inode(inode, inode->i_mode, inode->i_rdev); | |
166 | } else { | |
167 | ret = -EIO; | |
168 | goto bad_inode; | |
169 | } | |
170 | unlock_new_inode(inode); | |
a2a4a7e4 | 171 | trace_f2fs_iget(inode); |
19f99cee JK |
172 | return inode; |
173 | ||
174 | bad_inode: | |
175 | iget_failed(inode); | |
a2a4a7e4 | 176 | trace_f2fs_iget_exit(inode, ret); |
19f99cee JK |
177 | return ERR_PTR(ret); |
178 | } | |
179 | ||
180 | void update_inode(struct inode *inode, struct page *node_page) | |
181 | { | |
19f99cee JK |
182 | struct f2fs_inode *ri; |
183 | ||
5514f0aa | 184 | f2fs_wait_on_page_writeback(node_page, NODE); |
19f99cee | 185 | |
58bfaf44 | 186 | ri = F2FS_INODE(node_page); |
19f99cee JK |
187 | |
188 | ri->i_mode = cpu_to_le16(inode->i_mode); | |
189 | ri->i_advise = F2FS_I(inode)->i_advise; | |
190 | ri->i_uid = cpu_to_le32(i_uid_read(inode)); | |
191 | ri->i_gid = cpu_to_le32(i_gid_read(inode)); | |
192 | ri->i_links = cpu_to_le32(inode->i_nlink); | |
193 | ri->i_size = cpu_to_le64(i_size_read(inode)); | |
194 | ri->i_blocks = cpu_to_le64(inode->i_blocks); | |
195 | set_raw_extent(&F2FS_I(inode)->ext, &ri->i_ext); | |
444c580f | 196 | set_raw_inline(F2FS_I(inode), ri); |
19f99cee JK |
197 | |
198 | ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec); | |
199 | ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); | |
200 | ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec); | |
201 | ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); | |
202 | ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
203 | ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); | |
204 | ri->i_current_depth = cpu_to_le32(F2FS_I(inode)->i_current_depth); | |
205 | ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid); | |
206 | ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags); | |
6666e6aa | 207 | ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino); |
19f99cee | 208 | ri->i_generation = cpu_to_le32(inode->i_generation); |
38431545 | 209 | ri->i_dir_level = F2FS_I(inode)->i_dir_level; |
7d79e75f | 210 | |
3d1e3807 | 211 | __set_inode_rdev(inode, ri); |
398b1ac5 | 212 | set_cold_node(inode, node_page); |
19f99cee | 213 | set_page_dirty(node_page); |
3d1e3807 | 214 | |
b3783873 | 215 | clear_inode_flag(F2FS_I(inode), FI_DIRTY_INODE); |
19f99cee JK |
216 | } |
217 | ||
744602cf | 218 | void update_inode_page(struct inode *inode) |
19f99cee JK |
219 | { |
220 | struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); | |
221 | struct page *node_page; | |
744602cf | 222 | retry: |
19f99cee | 223 | node_page = get_node_page(sbi, inode->i_ino); |
744602cf JK |
224 | if (IS_ERR(node_page)) { |
225 | int err = PTR_ERR(node_page); | |
226 | if (err == -ENOMEM) { | |
227 | cond_resched(); | |
228 | goto retry; | |
229 | } else if (err != -ENOENT) { | |
230 | f2fs_stop_checkpoint(sbi); | |
231 | } | |
232 | return; | |
233 | } | |
19f99cee JK |
234 | update_inode(inode, node_page); |
235 | f2fs_put_page(node_page, 1); | |
19f99cee JK |
236 | } |
237 | ||
39936837 JK |
238 | int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc) |
239 | { | |
240 | struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); | |
39936837 JK |
241 | |
242 | if (inode->i_ino == F2FS_NODE_INO(sbi) || | |
243 | inode->i_ino == F2FS_META_INO(sbi)) | |
244 | return 0; | |
245 | ||
b3783873 JK |
246 | if (!is_inode_flag_set(F2FS_I(inode), FI_DIRTY_INODE)) |
247 | return 0; | |
248 | ||
39936837 JK |
249 | /* |
250 | * We need to lock here to prevent from producing dirty node pages | |
251 | * during the urgent cleaning time when runing out of free sections. | |
252 | */ | |
e479556b | 253 | f2fs_lock_op(sbi); |
744602cf | 254 | update_inode_page(inode); |
e479556b | 255 | f2fs_unlock_op(sbi); |
92c4342f JX |
256 | |
257 | if (wbc) | |
258 | f2fs_balance_fs(sbi); | |
259 | ||
744602cf | 260 | return 0; |
39936837 JK |
261 | } |
262 | ||
0a8165d7 | 263 | /* |
19f99cee JK |
264 | * Called at the last iput() if i_nlink is zero |
265 | */ | |
266 | void f2fs_evict_inode(struct inode *inode) | |
267 | { | |
268 | struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); | |
269 | ||
a2a4a7e4 | 270 | trace_f2fs_evict_inode(inode); |
91b0abe3 | 271 | truncate_inode_pages_final(&inode->i_data); |
19f99cee JK |
272 | |
273 | if (inode->i_ino == F2FS_NODE_INO(sbi) || | |
274 | inode->i_ino == F2FS_META_INO(sbi)) | |
275 | goto no_delete; | |
276 | ||
f8b2c1f9 | 277 | f2fs_bug_on(get_dirty_dents(inode)); |
19f99cee JK |
278 | remove_dirty_dir_inode(inode); |
279 | ||
280 | if (inode->i_nlink || is_bad_inode(inode)) | |
281 | goto no_delete; | |
282 | ||
d6212a5f | 283 | sb_start_intwrite(inode->i_sb); |
19f99cee JK |
284 | set_inode_flag(F2FS_I(inode), FI_NO_ALLOC); |
285 | i_size_write(inode, 0); | |
286 | ||
287 | if (F2FS_HAS_BLOCKS(inode)) | |
288 | f2fs_truncate(inode); | |
289 | ||
e479556b | 290 | f2fs_lock_op(sbi); |
19f99cee | 291 | remove_inode_page(inode); |
0dbdc2ae | 292 | stat_dec_inline_inode(inode); |
e479556b | 293 | f2fs_unlock_op(sbi); |
39936837 | 294 | |
d6212a5f | 295 | sb_end_intwrite(inode->i_sb); |
19f99cee JK |
296 | no_delete: |
297 | clear_inode(inode); | |
8198899b | 298 | invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, inode->i_ino); |
19f99cee | 299 | } |