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Commit | Line | Data |
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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 | ||
3c6c2beb JK |
54 | static bool __written_first_block(struct f2fs_inode *ri) |
55 | { | |
adad81ed JK |
56 | block_t addr = le32_to_cpu(ri->i_addr[0]); |
57 | ||
58 | if (addr != NEW_ADDR && addr != NULL_ADDR) | |
3c6c2beb JK |
59 | return true; |
60 | return false; | |
61 | } | |
62 | ||
3d1e3807 JK |
63 | static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri) |
64 | { | |
65 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { | |
66 | if (old_valid_dev(inode->i_rdev)) { | |
6c311ec6 CF |
67 | ri->i_addr[0] = |
68 | cpu_to_le32(old_encode_dev(inode->i_rdev)); | |
3d1e3807 JK |
69 | ri->i_addr[1] = 0; |
70 | } else { | |
71 | ri->i_addr[0] = 0; | |
6c311ec6 CF |
72 | ri->i_addr[1] = |
73 | cpu_to_le32(new_encode_dev(inode->i_rdev)); | |
3d1e3807 JK |
74 | ri->i_addr[2] = 0; |
75 | } | |
76 | } | |
77 | } | |
78 | ||
9e5ba77f | 79 | static void __recover_inline_status(struct inode *inode, struct page *ipage) |
b3d208f9 JK |
80 | { |
81 | void *inline_data = inline_data_addr(ipage); | |
9e5ba77f CY |
82 | __le32 *start = inline_data; |
83 | __le32 *end = start + MAX_INLINE_DATA / sizeof(__le32); | |
b3d208f9 | 84 | |
9e5ba77f CY |
85 | while (start < end) { |
86 | if (*start++) { | |
87 | f2fs_wait_on_page_writeback(ipage, NODE); | |
b3d208f9 | 88 | |
9e5ba77f CY |
89 | set_inode_flag(F2FS_I(inode), FI_DATA_EXIST); |
90 | set_raw_inline(F2FS_I(inode), F2FS_INODE(ipage)); | |
91 | set_page_dirty(ipage); | |
92 | return; | |
93 | } | |
b3d208f9 | 94 | } |
9e5ba77f | 95 | return; |
b3d208f9 JK |
96 | } |
97 | ||
19f99cee JK |
98 | static int do_read_inode(struct inode *inode) |
99 | { | |
4081363f | 100 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
19f99cee JK |
101 | struct f2fs_inode_info *fi = F2FS_I(inode); |
102 | struct page *node_page; | |
19f99cee JK |
103 | struct f2fs_inode *ri; |
104 | ||
105 | /* Check if ino is within scope */ | |
064e0823 NJ |
106 | if (check_nid_range(sbi, inode->i_ino)) { |
107 | f2fs_msg(inode->i_sb, KERN_ERR, "bad inode number: %lu", | |
108 | (unsigned long) inode->i_ino); | |
d6b7d4b3 | 109 | WARN_ON(1); |
064e0823 NJ |
110 | return -EINVAL; |
111 | } | |
19f99cee JK |
112 | |
113 | node_page = get_node_page(sbi, inode->i_ino); | |
114 | if (IS_ERR(node_page)) | |
115 | return PTR_ERR(node_page); | |
116 | ||
58bfaf44 | 117 | ri = F2FS_INODE(node_page); |
19f99cee JK |
118 | |
119 | inode->i_mode = le16_to_cpu(ri->i_mode); | |
120 | i_uid_write(inode, le32_to_cpu(ri->i_uid)); | |
121 | i_gid_write(inode, le32_to_cpu(ri->i_gid)); | |
122 | set_nlink(inode, le32_to_cpu(ri->i_links)); | |
123 | inode->i_size = le64_to_cpu(ri->i_size); | |
124 | inode->i_blocks = le64_to_cpu(ri->i_blocks); | |
125 | ||
126 | inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime); | |
127 | inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime); | |
128 | inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime); | |
129 | inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec); | |
130 | inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec); | |
131 | inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec); | |
132 | inode->i_generation = le32_to_cpu(ri->i_generation); | |
133 | ||
134 | fi->i_current_depth = le32_to_cpu(ri->i_current_depth); | |
135 | fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid); | |
136 | fi->i_flags = le32_to_cpu(ri->i_flags); | |
137 | fi->flags = 0; | |
19f99cee | 138 | fi->i_advise = ri->i_advise; |
6666e6aa | 139 | fi->i_pino = le32_to_cpu(ri->i_pino); |
38431545 | 140 | fi->i_dir_level = ri->i_dir_level; |
3d1e3807 | 141 | |
028a41e8 | 142 | f2fs_init_extent_cache(inode, &ri->i_ext); |
0c872e2d | 143 | |
444c580f | 144 | get_inline_info(fi, ri); |
3d1e3807 | 145 | |
b3d208f9 JK |
146 | /* check data exist */ |
147 | if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode)) | |
9e5ba77f | 148 | __recover_inline_status(inode, node_page); |
b3d208f9 | 149 | |
3d1e3807 JK |
150 | /* get rdev by using inline_info */ |
151 | __get_inode_rdev(inode, ri); | |
152 | ||
3c6c2beb JK |
153 | if (__written_first_block(ri)) |
154 | set_inode_flag(F2FS_I(inode), FI_FIRST_BLOCK_WRITTEN); | |
155 | ||
19f99cee | 156 | f2fs_put_page(node_page, 1); |
9d1015dd JK |
157 | |
158 | stat_inc_inline_inode(inode); | |
159 | stat_inc_inline_dir(inode); | |
160 | ||
9e5ba77f | 161 | return 0; |
19f99cee JK |
162 | } |
163 | ||
164 | struct inode *f2fs_iget(struct super_block *sb, unsigned long ino) | |
165 | { | |
166 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
167 | struct inode *inode; | |
a2a4a7e4 | 168 | int ret = 0; |
19f99cee JK |
169 | |
170 | inode = iget_locked(sb, ino); | |
171 | if (!inode) | |
172 | return ERR_PTR(-ENOMEM); | |
a2a4a7e4 NJ |
173 | |
174 | if (!(inode->i_state & I_NEW)) { | |
175 | trace_f2fs_iget(inode); | |
19f99cee | 176 | return inode; |
a2a4a7e4 | 177 | } |
19f99cee JK |
178 | if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi)) |
179 | goto make_now; | |
180 | ||
181 | ret = do_read_inode(inode); | |
182 | if (ret) | |
183 | goto bad_inode; | |
19f99cee JK |
184 | make_now: |
185 | if (ino == F2FS_NODE_INO(sbi)) { | |
186 | inode->i_mapping->a_ops = &f2fs_node_aops; | |
187 | mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO); | |
188 | } else if (ino == F2FS_META_INO(sbi)) { | |
189 | inode->i_mapping->a_ops = &f2fs_meta_aops; | |
190 | mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO); | |
191 | } else if (S_ISREG(inode->i_mode)) { | |
192 | inode->i_op = &f2fs_file_inode_operations; | |
193 | inode->i_fop = &f2fs_file_operations; | |
194 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
195 | } else if (S_ISDIR(inode->i_mode)) { | |
196 | inode->i_op = &f2fs_dir_inode_operations; | |
197 | inode->i_fop = &f2fs_dir_operations; | |
198 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
a78186eb | 199 | mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_HIGH_ZERO); |
19f99cee JK |
200 | } else if (S_ISLNK(inode->i_mode)) { |
201 | inode->i_op = &f2fs_symlink_inode_operations; | |
202 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
203 | } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || | |
204 | S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { | |
205 | inode->i_op = &f2fs_special_inode_operations; | |
206 | init_special_inode(inode, inode->i_mode, inode->i_rdev); | |
207 | } else { | |
208 | ret = -EIO; | |
209 | goto bad_inode; | |
210 | } | |
211 | unlock_new_inode(inode); | |
a2a4a7e4 | 212 | trace_f2fs_iget(inode); |
19f99cee JK |
213 | return inode; |
214 | ||
215 | bad_inode: | |
216 | iget_failed(inode); | |
a2a4a7e4 | 217 | trace_f2fs_iget_exit(inode, ret); |
19f99cee JK |
218 | return ERR_PTR(ret); |
219 | } | |
220 | ||
221 | void update_inode(struct inode *inode, struct page *node_page) | |
222 | { | |
19f99cee JK |
223 | struct f2fs_inode *ri; |
224 | ||
5514f0aa | 225 | f2fs_wait_on_page_writeback(node_page, NODE); |
19f99cee | 226 | |
58bfaf44 | 227 | ri = F2FS_INODE(node_page); |
19f99cee JK |
228 | |
229 | ri->i_mode = cpu_to_le16(inode->i_mode); | |
230 | ri->i_advise = F2FS_I(inode)->i_advise; | |
231 | ri->i_uid = cpu_to_le32(i_uid_read(inode)); | |
232 | ri->i_gid = cpu_to_le32(i_gid_read(inode)); | |
233 | ri->i_links = cpu_to_le32(inode->i_nlink); | |
234 | ri->i_size = cpu_to_le64(i_size_read(inode)); | |
235 | ri->i_blocks = cpu_to_le64(inode->i_blocks); | |
0c872e2d CY |
236 | |
237 | read_lock(&F2FS_I(inode)->ext_lock); | |
19f99cee | 238 | set_raw_extent(&F2FS_I(inode)->ext, &ri->i_ext); |
0c872e2d CY |
239 | read_unlock(&F2FS_I(inode)->ext_lock); |
240 | ||
444c580f | 241 | set_raw_inline(F2FS_I(inode), ri); |
19f99cee JK |
242 | |
243 | ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec); | |
244 | ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); | |
245 | ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec); | |
246 | ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); | |
247 | ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
248 | ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); | |
249 | ri->i_current_depth = cpu_to_le32(F2FS_I(inode)->i_current_depth); | |
250 | ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid); | |
251 | ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags); | |
6666e6aa | 252 | ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino); |
19f99cee | 253 | ri->i_generation = cpu_to_le32(inode->i_generation); |
38431545 | 254 | ri->i_dir_level = F2FS_I(inode)->i_dir_level; |
7d79e75f | 255 | |
3d1e3807 | 256 | __set_inode_rdev(inode, ri); |
398b1ac5 | 257 | set_cold_node(inode, node_page); |
19f99cee | 258 | set_page_dirty(node_page); |
3d1e3807 | 259 | |
b3783873 | 260 | clear_inode_flag(F2FS_I(inode), FI_DIRTY_INODE); |
19f99cee JK |
261 | } |
262 | ||
744602cf | 263 | void update_inode_page(struct inode *inode) |
19f99cee | 264 | { |
4081363f | 265 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
19f99cee | 266 | struct page *node_page; |
744602cf | 267 | retry: |
19f99cee | 268 | node_page = get_node_page(sbi, inode->i_ino); |
744602cf JK |
269 | if (IS_ERR(node_page)) { |
270 | int err = PTR_ERR(node_page); | |
271 | if (err == -ENOMEM) { | |
272 | cond_resched(); | |
273 | goto retry; | |
274 | } else if (err != -ENOENT) { | |
275 | f2fs_stop_checkpoint(sbi); | |
276 | } | |
277 | return; | |
278 | } | |
19f99cee JK |
279 | update_inode(inode, node_page); |
280 | f2fs_put_page(node_page, 1); | |
19f99cee JK |
281 | } |
282 | ||
39936837 JK |
283 | int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc) |
284 | { | |
4081363f | 285 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
39936837 JK |
286 | |
287 | if (inode->i_ino == F2FS_NODE_INO(sbi) || | |
288 | inode->i_ino == F2FS_META_INO(sbi)) | |
289 | return 0; | |
290 | ||
b3783873 JK |
291 | if (!is_inode_flag_set(F2FS_I(inode), FI_DIRTY_INODE)) |
292 | return 0; | |
293 | ||
39936837 JK |
294 | /* |
295 | * We need to lock here to prevent from producing dirty node pages | |
296 | * during the urgent cleaning time when runing out of free sections. | |
297 | */ | |
e479556b | 298 | f2fs_lock_op(sbi); |
744602cf | 299 | update_inode_page(inode); |
e479556b | 300 | f2fs_unlock_op(sbi); |
92c4342f JX |
301 | |
302 | if (wbc) | |
303 | f2fs_balance_fs(sbi); | |
304 | ||
744602cf | 305 | return 0; |
39936837 JK |
306 | } |
307 | ||
0a8165d7 | 308 | /* |
19f99cee JK |
309 | * Called at the last iput() if i_nlink is zero |
310 | */ | |
311 | void f2fs_evict_inode(struct inode *inode) | |
312 | { | |
4081363f | 313 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
002a41ca | 314 | nid_t xnid = F2FS_I(inode)->i_xattr_nid; |
19f99cee | 315 | |
88b88a66 | 316 | /* some remained atomic pages should discarded */ |
1e84371f | 317 | if (f2fs_is_atomic_file(inode)) |
88b88a66 JK |
318 | commit_inmem_pages(inode, true); |
319 | ||
a2a4a7e4 | 320 | trace_f2fs_evict_inode(inode); |
91b0abe3 | 321 | truncate_inode_pages_final(&inode->i_data); |
19f99cee JK |
322 | |
323 | if (inode->i_ino == F2FS_NODE_INO(sbi) || | |
324 | inode->i_ino == F2FS_META_INO(sbi)) | |
dbf20cb2 | 325 | goto out_clear; |
19f99cee | 326 | |
a7ffdbe2 | 327 | f2fs_bug_on(sbi, get_dirty_pages(inode)); |
19f99cee JK |
328 | remove_dirty_dir_inode(inode); |
329 | ||
330 | if (inode->i_nlink || is_bad_inode(inode)) | |
331 | goto no_delete; | |
332 | ||
d6212a5f | 333 | sb_start_intwrite(inode->i_sb); |
19f99cee JK |
334 | set_inode_flag(F2FS_I(inode), FI_NO_ALLOC); |
335 | i_size_write(inode, 0); | |
336 | ||
337 | if (F2FS_HAS_BLOCKS(inode)) | |
338 | f2fs_truncate(inode); | |
339 | ||
e479556b | 340 | f2fs_lock_op(sbi); |
19f99cee | 341 | remove_inode_page(inode); |
e479556b | 342 | f2fs_unlock_op(sbi); |
39936837 | 343 | |
d6212a5f | 344 | sb_end_intwrite(inode->i_sb); |
19f99cee | 345 | no_delete: |
3289c061 | 346 | stat_dec_inline_dir(inode); |
e7a2bf22 | 347 | stat_dec_inline_inode(inode); |
0bdee482 CY |
348 | |
349 | /* update extent info in inode */ | |
350 | if (inode->i_nlink) | |
351 | f2fs_preserve_extent_tree(inode); | |
1dcc336b | 352 | f2fs_destroy_extent_tree(inode); |
0bdee482 | 353 | |
8198899b | 354 | invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, inode->i_ino); |
002a41ca CY |
355 | if (xnid) |
356 | invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid); | |
fff04f90 JK |
357 | if (is_inode_flag_set(F2FS_I(inode), FI_APPEND_WRITE)) |
358 | add_dirty_inode(sbi, inode->i_ino, APPEND_INO); | |
359 | if (is_inode_flag_set(F2FS_I(inode), FI_UPDATE_WRITE)) | |
360 | add_dirty_inode(sbi, inode->i_ino, UPDATE_INO); | |
dbf20cb2 | 361 | out_clear: |
fcc85a4d JK |
362 | #ifdef CONFIG_F2FS_FS_ENCRYPTION |
363 | if (F2FS_I(inode)->i_crypt_info) | |
364 | f2fs_free_encryption_info(inode); | |
365 | #endif | |
dbf20cb2 | 366 | clear_inode(inode); |
19f99cee | 367 | } |
44c16156 JK |
368 | |
369 | /* caller should call f2fs_lock_op() */ | |
370 | void handle_failed_inode(struct inode *inode) | |
371 | { | |
372 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
373 | ||
374 | clear_nlink(inode); | |
375 | make_bad_inode(inode); | |
376 | unlock_new_inode(inode); | |
377 | ||
378 | i_size_write(inode, 0); | |
379 | if (F2FS_HAS_BLOCKS(inode)) | |
380 | f2fs_truncate(inode); | |
381 | ||
382 | remove_inode_page(inode); | |
44c16156 | 383 | |
b3d208f9 | 384 | clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA); |
3289c061 | 385 | clear_inode_flag(F2FS_I(inode), FI_INLINE_DENTRY); |
44c16156 JK |
386 | alloc_nid_failed(sbi, inode->i_ino); |
387 | f2fs_unlock_op(sbi); | |
388 | ||
389 | /* iput will drop the inode object */ | |
390 | iput(inode); | |
391 | } |