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; | |
8abfb36a | 24 | unsigned int new_fl = 0; |
19f99cee JK |
25 | |
26 | if (flags & FS_SYNC_FL) | |
8abfb36a | 27 | new_fl |= S_SYNC; |
19f99cee | 28 | if (flags & FS_APPEND_FL) |
8abfb36a | 29 | new_fl |= S_APPEND; |
19f99cee | 30 | if (flags & FS_IMMUTABLE_FL) |
8abfb36a | 31 | new_fl |= S_IMMUTABLE; |
19f99cee | 32 | if (flags & FS_NOATIME_FL) |
8abfb36a | 33 | new_fl |= S_NOATIME; |
19f99cee | 34 | if (flags & FS_DIRSYNC_FL) |
8abfb36a | 35 | new_fl |= S_DIRSYNC; |
6a678857 ZZ |
36 | inode_set_flags(inode, new_fl, |
37 | S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC); | |
19f99cee JK |
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 | ||
3c6c2beb JK |
53 | static bool __written_first_block(struct f2fs_inode *ri) |
54 | { | |
adad81ed JK |
55 | block_t addr = le32_to_cpu(ri->i_addr[0]); |
56 | ||
57 | if (addr != NEW_ADDR && addr != NULL_ADDR) | |
3c6c2beb JK |
58 | return true; |
59 | return false; | |
60 | } | |
61 | ||
3d1e3807 JK |
62 | static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri) |
63 | { | |
64 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { | |
65 | if (old_valid_dev(inode->i_rdev)) { | |
6c311ec6 CF |
66 | ri->i_addr[0] = |
67 | cpu_to_le32(old_encode_dev(inode->i_rdev)); | |
3d1e3807 JK |
68 | ri->i_addr[1] = 0; |
69 | } else { | |
70 | ri->i_addr[0] = 0; | |
6c311ec6 CF |
71 | ri->i_addr[1] = |
72 | cpu_to_le32(new_encode_dev(inode->i_rdev)); | |
3d1e3807 JK |
73 | ri->i_addr[2] = 0; |
74 | } | |
75 | } | |
76 | } | |
77 | ||
9e5ba77f | 78 | static void __recover_inline_status(struct inode *inode, struct page *ipage) |
b3d208f9 JK |
79 | { |
80 | void *inline_data = inline_data_addr(ipage); | |
9e5ba77f CY |
81 | __le32 *start = inline_data; |
82 | __le32 *end = start + MAX_INLINE_DATA / sizeof(__le32); | |
b3d208f9 | 83 | |
9e5ba77f CY |
84 | while (start < end) { |
85 | if (*start++) { | |
86 | f2fs_wait_on_page_writeback(ipage, NODE); | |
b3d208f9 | 87 | |
9e5ba77f CY |
88 | set_inode_flag(F2FS_I(inode), FI_DATA_EXIST); |
89 | set_raw_inline(F2FS_I(inode), F2FS_INODE(ipage)); | |
90 | set_page_dirty(ipage); | |
91 | return; | |
92 | } | |
b3d208f9 | 93 | } |
9e5ba77f | 94 | return; |
b3d208f9 JK |
95 | } |
96 | ||
19f99cee JK |
97 | static int do_read_inode(struct inode *inode) |
98 | { | |
4081363f | 99 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
19f99cee JK |
100 | struct f2fs_inode_info *fi = F2FS_I(inode); |
101 | struct page *node_page; | |
19f99cee JK |
102 | struct f2fs_inode *ri; |
103 | ||
104 | /* Check if ino is within scope */ | |
064e0823 NJ |
105 | if (check_nid_range(sbi, inode->i_ino)) { |
106 | f2fs_msg(inode->i_sb, KERN_ERR, "bad inode number: %lu", | |
107 | (unsigned long) inode->i_ino); | |
d6b7d4b3 | 108 | WARN_ON(1); |
064e0823 NJ |
109 | return -EINVAL; |
110 | } | |
19f99cee JK |
111 | |
112 | node_page = get_node_page(sbi, inode->i_ino); | |
113 | if (IS_ERR(node_page)) | |
114 | return PTR_ERR(node_page); | |
115 | ||
58bfaf44 | 116 | ri = F2FS_INODE(node_page); |
19f99cee JK |
117 | |
118 | inode->i_mode = le16_to_cpu(ri->i_mode); | |
119 | i_uid_write(inode, le32_to_cpu(ri->i_uid)); | |
120 | i_gid_write(inode, le32_to_cpu(ri->i_gid)); | |
121 | set_nlink(inode, le32_to_cpu(ri->i_links)); | |
122 | inode->i_size = le64_to_cpu(ri->i_size); | |
123 | inode->i_blocks = le64_to_cpu(ri->i_blocks); | |
124 | ||
125 | inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime); | |
126 | inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime); | |
127 | inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime); | |
128 | inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec); | |
129 | inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec); | |
130 | inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec); | |
131 | inode->i_generation = le32_to_cpu(ri->i_generation); | |
132 | ||
133 | fi->i_current_depth = le32_to_cpu(ri->i_current_depth); | |
134 | fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid); | |
135 | fi->i_flags = le32_to_cpu(ri->i_flags); | |
136 | fi->flags = 0; | |
19f99cee | 137 | fi->i_advise = ri->i_advise; |
6666e6aa | 138 | fi->i_pino = le32_to_cpu(ri->i_pino); |
38431545 | 139 | fi->i_dir_level = ri->i_dir_level; |
3d1e3807 | 140 | |
3e72f721 | 141 | f2fs_init_extent_tree(inode, &ri->i_ext); |
0c872e2d | 142 | |
444c580f | 143 | get_inline_info(fi, ri); |
3d1e3807 | 144 | |
b3d208f9 JK |
145 | /* check data exist */ |
146 | if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode)) | |
9e5ba77f | 147 | __recover_inline_status(inode, node_page); |
b3d208f9 | 148 | |
3d1e3807 JK |
149 | /* get rdev by using inline_info */ |
150 | __get_inode_rdev(inode, ri); | |
151 | ||
3c6c2beb JK |
152 | if (__written_first_block(ri)) |
153 | set_inode_flag(F2FS_I(inode), FI_FIRST_BLOCK_WRITTEN); | |
154 | ||
19f99cee | 155 | f2fs_put_page(node_page, 1); |
9d1015dd | 156 | |
d5e8f6c9 | 157 | stat_inc_inline_xattr(inode); |
9d1015dd JK |
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 | 200 | } else if (S_ISLNK(inode->i_mode)) { |
cbaf042a JK |
201 | if (f2fs_encrypted_inode(inode)) |
202 | inode->i_op = &f2fs_encrypted_symlink_inode_operations; | |
203 | else | |
204 | inode->i_op = &f2fs_symlink_inode_operations; | |
19f99cee JK |
205 | inode->i_mapping->a_ops = &f2fs_dblock_aops; |
206 | } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || | |
207 | S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { | |
208 | inode->i_op = &f2fs_special_inode_operations; | |
209 | init_special_inode(inode, inode->i_mode, inode->i_rdev); | |
210 | } else { | |
211 | ret = -EIO; | |
212 | goto bad_inode; | |
213 | } | |
214 | unlock_new_inode(inode); | |
a2a4a7e4 | 215 | trace_f2fs_iget(inode); |
19f99cee JK |
216 | return inode; |
217 | ||
218 | bad_inode: | |
219 | iget_failed(inode); | |
a2a4a7e4 | 220 | trace_f2fs_iget_exit(inode, ret); |
19f99cee JK |
221 | return ERR_PTR(ret); |
222 | } | |
223 | ||
224 | void update_inode(struct inode *inode, struct page *node_page) | |
225 | { | |
19f99cee JK |
226 | struct f2fs_inode *ri; |
227 | ||
5514f0aa | 228 | f2fs_wait_on_page_writeback(node_page, NODE); |
19f99cee | 229 | |
58bfaf44 | 230 | ri = F2FS_INODE(node_page); |
19f99cee JK |
231 | |
232 | ri->i_mode = cpu_to_le16(inode->i_mode); | |
233 | ri->i_advise = F2FS_I(inode)->i_advise; | |
234 | ri->i_uid = cpu_to_le32(i_uid_read(inode)); | |
235 | ri->i_gid = cpu_to_le32(i_gid_read(inode)); | |
236 | ri->i_links = cpu_to_le32(inode->i_nlink); | |
237 | ri->i_size = cpu_to_le64(i_size_read(inode)); | |
238 | ri->i_blocks = cpu_to_le64(inode->i_blocks); | |
0c872e2d | 239 | |
3e72f721 JK |
240 | if (F2FS_I(inode)->extent_tree) |
241 | set_raw_extent(&F2FS_I(inode)->extent_tree->largest, | |
242 | &ri->i_ext); | |
243 | else | |
244 | memset(&ri->i_ext, 0, sizeof(ri->i_ext)); | |
444c580f | 245 | set_raw_inline(F2FS_I(inode), ri); |
19f99cee JK |
246 | |
247 | ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec); | |
248 | ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); | |
249 | ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec); | |
250 | ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); | |
251 | ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
252 | ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); | |
253 | ri->i_current_depth = cpu_to_le32(F2FS_I(inode)->i_current_depth); | |
254 | ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid); | |
255 | ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags); | |
6666e6aa | 256 | ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino); |
19f99cee | 257 | ri->i_generation = cpu_to_le32(inode->i_generation); |
38431545 | 258 | ri->i_dir_level = F2FS_I(inode)->i_dir_level; |
7d79e75f | 259 | |
3d1e3807 | 260 | __set_inode_rdev(inode, ri); |
398b1ac5 | 261 | set_cold_node(inode, node_page); |
19f99cee | 262 | set_page_dirty(node_page); |
3d1e3807 | 263 | |
b3783873 | 264 | clear_inode_flag(F2FS_I(inode), FI_DIRTY_INODE); |
19f99cee JK |
265 | } |
266 | ||
744602cf | 267 | void update_inode_page(struct inode *inode) |
19f99cee | 268 | { |
4081363f | 269 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
19f99cee | 270 | struct page *node_page; |
744602cf | 271 | retry: |
19f99cee | 272 | node_page = get_node_page(sbi, inode->i_ino); |
744602cf JK |
273 | if (IS_ERR(node_page)) { |
274 | int err = PTR_ERR(node_page); | |
275 | if (err == -ENOMEM) { | |
276 | cond_resched(); | |
277 | goto retry; | |
278 | } else if (err != -ENOENT) { | |
279 | f2fs_stop_checkpoint(sbi); | |
280 | } | |
281 | return; | |
282 | } | |
19f99cee JK |
283 | update_inode(inode, node_page); |
284 | f2fs_put_page(node_page, 1); | |
19f99cee JK |
285 | } |
286 | ||
39936837 JK |
287 | int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc) |
288 | { | |
4081363f | 289 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
39936837 JK |
290 | |
291 | if (inode->i_ino == F2FS_NODE_INO(sbi) || | |
292 | inode->i_ino == F2FS_META_INO(sbi)) | |
293 | return 0; | |
294 | ||
b3783873 JK |
295 | if (!is_inode_flag_set(F2FS_I(inode), FI_DIRTY_INODE)) |
296 | return 0; | |
297 | ||
39936837 JK |
298 | /* |
299 | * We need to lock here to prevent from producing dirty node pages | |
300 | * during the urgent cleaning time when runing out of free sections. | |
301 | */ | |
e479556b | 302 | f2fs_lock_op(sbi); |
744602cf | 303 | update_inode_page(inode); |
e479556b | 304 | f2fs_unlock_op(sbi); |
92c4342f JX |
305 | |
306 | if (wbc) | |
307 | f2fs_balance_fs(sbi); | |
308 | ||
744602cf | 309 | return 0; |
39936837 JK |
310 | } |
311 | ||
0a8165d7 | 312 | /* |
19f99cee JK |
313 | * Called at the last iput() if i_nlink is zero |
314 | */ | |
315 | void f2fs_evict_inode(struct inode *inode) | |
316 | { | |
4081363f | 317 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
c9b63bd0 JK |
318 | struct f2fs_inode_info *fi = F2FS_I(inode); |
319 | nid_t xnid = fi->i_xattr_nid; | |
13ec7297 | 320 | int err = 0; |
19f99cee | 321 | |
88b88a66 | 322 | /* some remained atomic pages should discarded */ |
1e84371f | 323 | if (f2fs_is_atomic_file(inode)) |
88b88a66 JK |
324 | commit_inmem_pages(inode, true); |
325 | ||
a2a4a7e4 | 326 | trace_f2fs_evict_inode(inode); |
91b0abe3 | 327 | truncate_inode_pages_final(&inode->i_data); |
19f99cee JK |
328 | |
329 | if (inode->i_ino == F2FS_NODE_INO(sbi) || | |
330 | inode->i_ino == F2FS_META_INO(sbi)) | |
dbf20cb2 | 331 | goto out_clear; |
19f99cee | 332 | |
a7ffdbe2 | 333 | f2fs_bug_on(sbi, get_dirty_pages(inode)); |
19f99cee JK |
334 | remove_dirty_dir_inode(inode); |
335 | ||
3e72f721 JK |
336 | f2fs_destroy_extent_tree(inode); |
337 | ||
19f99cee JK |
338 | if (inode->i_nlink || is_bad_inode(inode)) |
339 | goto no_delete; | |
340 | ||
d6212a5f | 341 | sb_start_intwrite(inode->i_sb); |
c9b63bd0 | 342 | set_inode_flag(fi, FI_NO_ALLOC); |
19f99cee JK |
343 | i_size_write(inode, 0); |
344 | ||
345 | if (F2FS_HAS_BLOCKS(inode)) | |
13ec7297 | 346 | err = f2fs_truncate(inode, true); |
19f99cee | 347 | |
13ec7297 CY |
348 | if (!err) { |
349 | f2fs_lock_op(sbi); | |
350 | err = remove_inode_page(inode); | |
351 | f2fs_unlock_op(sbi); | |
352 | } | |
39936837 | 353 | |
d6212a5f | 354 | sb_end_intwrite(inode->i_sb); |
19f99cee | 355 | no_delete: |
d5e8f6c9 | 356 | stat_dec_inline_xattr(inode); |
3289c061 | 357 | stat_dec_inline_dir(inode); |
e7a2bf22 | 358 | stat_dec_inline_inode(inode); |
0bdee482 | 359 | |
8198899b | 360 | invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, inode->i_ino); |
002a41ca CY |
361 | if (xnid) |
362 | invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid); | |
c9b63bd0 | 363 | if (is_inode_flag_set(fi, FI_APPEND_WRITE)) |
fff04f90 | 364 | add_dirty_inode(sbi, inode->i_ino, APPEND_INO); |
c9b63bd0 | 365 | if (is_inode_flag_set(fi, FI_UPDATE_WRITE)) |
fff04f90 | 366 | add_dirty_inode(sbi, inode->i_ino, UPDATE_INO); |
c9b63bd0 | 367 | if (is_inode_flag_set(fi, FI_FREE_NID)) { |
13ec7297 CY |
368 | if (err && err != -ENOENT) |
369 | alloc_nid_done(sbi, inode->i_ino); | |
370 | else | |
371 | alloc_nid_failed(sbi, inode->i_ino); | |
c9b63bd0 JK |
372 | clear_inode_flag(fi, FI_FREE_NID); |
373 | } | |
13ec7297 CY |
374 | |
375 | if (err && err != -ENOENT) { | |
376 | if (!exist_written_data(sbi, inode->i_ino, ORPHAN_INO)) { | |
377 | /* | |
378 | * get here because we failed to release resource | |
379 | * of inode previously, reminder our user to run fsck | |
380 | * for fixing. | |
381 | */ | |
382 | set_sbi_flag(sbi, SBI_NEED_FSCK); | |
383 | f2fs_msg(sbi->sb, KERN_WARNING, | |
384 | "inode (ino:%lu) resource leak, run fsck " | |
385 | "to fix this issue!", inode->i_ino); | |
386 | } | |
387 | } | |
dbf20cb2 | 388 | out_clear: |
fcc85a4d | 389 | #ifdef CONFIG_F2FS_FS_ENCRYPTION |
c9b63bd0 JK |
390 | if (fi->i_crypt_info) |
391 | f2fs_free_encryption_info(inode, fi->i_crypt_info); | |
fcc85a4d | 392 | #endif |
dbf20cb2 | 393 | clear_inode(inode); |
19f99cee | 394 | } |
44c16156 JK |
395 | |
396 | /* caller should call f2fs_lock_op() */ | |
397 | void handle_failed_inode(struct inode *inode) | |
398 | { | |
399 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
13ec7297 | 400 | int err = 0; |
44c16156 JK |
401 | |
402 | clear_nlink(inode); | |
403 | make_bad_inode(inode); | |
404 | unlock_new_inode(inode); | |
405 | ||
406 | i_size_write(inode, 0); | |
407 | if (F2FS_HAS_BLOCKS(inode)) | |
13ec7297 CY |
408 | err = f2fs_truncate(inode, false); |
409 | ||
410 | if (!err) | |
411 | err = remove_inode_page(inode); | |
44c16156 | 412 | |
13ec7297 CY |
413 | /* |
414 | * if we skip truncate_node in remove_inode_page bacause we failed | |
415 | * before, it's better to find another way to release resource of | |
416 | * this inode (e.g. valid block count, node block or nid). Here we | |
417 | * choose to add this inode to orphan list, so that we can call iput | |
418 | * for releasing in orphan recovery flow. | |
419 | * | |
420 | * Note: we should add inode to orphan list before f2fs_unlock_op() | |
421 | * so we can prevent losing this orphan when encoutering checkpoint | |
422 | * and following suddenly power-off. | |
423 | */ | |
424 | if (err && err != -ENOENT) { | |
425 | err = acquire_orphan_inode(sbi); | |
426 | if (!err) | |
427 | add_orphan_inode(sbi, inode->i_ino); | |
428 | } | |
44c16156 | 429 | |
c9b63bd0 | 430 | set_inode_flag(F2FS_I(inode), FI_FREE_NID); |
44c16156 JK |
431 | f2fs_unlock_op(sbi); |
432 | ||
433 | /* iput will drop the inode object */ | |
434 | iput(inode); | |
435 | } |