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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> | |
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); | |
205b9822 | 38 | mark_inode_dirty_sync(inode); |
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++) { | |
fec1d657 | 87 | f2fs_wait_on_page_writeback(ipage, NODE, true); |
b3d208f9 | 88 | |
91942321 JK |
89 | set_inode_flag(inode, FI_DATA_EXIST); |
90 | set_raw_inline(inode, F2FS_INODE(ipage)); | |
9e5ba77f CY |
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 | |
ed3d1256 JK |
142 | if (f2fs_init_extent_tree(inode, &ri->i_ext)) |
143 | set_page_dirty(node_page); | |
0c872e2d | 144 | |
91942321 | 145 | get_inline_info(inode, ri); |
3d1e3807 | 146 | |
b3d208f9 JK |
147 | /* check data exist */ |
148 | if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode)) | |
9e5ba77f | 149 | __recover_inline_status(inode, node_page); |
b3d208f9 | 150 | |
3d1e3807 JK |
151 | /* get rdev by using inline_info */ |
152 | __get_inode_rdev(inode, ri); | |
153 | ||
3c6c2beb | 154 | if (__written_first_block(ri)) |
91942321 | 155 | set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN); |
3c6c2beb | 156 | |
19f99cee | 157 | f2fs_put_page(node_page, 1); |
9d1015dd | 158 | |
d5e8f6c9 | 159 | stat_inc_inline_xattr(inode); |
9d1015dd JK |
160 | stat_inc_inline_inode(inode); |
161 | stat_inc_inline_dir(inode); | |
162 | ||
9e5ba77f | 163 | return 0; |
19f99cee JK |
164 | } |
165 | ||
166 | struct inode *f2fs_iget(struct super_block *sb, unsigned long ino) | |
167 | { | |
168 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
169 | struct inode *inode; | |
a2a4a7e4 | 170 | int ret = 0; |
19f99cee JK |
171 | |
172 | inode = iget_locked(sb, ino); | |
173 | if (!inode) | |
174 | return ERR_PTR(-ENOMEM); | |
a2a4a7e4 NJ |
175 | |
176 | if (!(inode->i_state & I_NEW)) { | |
177 | trace_f2fs_iget(inode); | |
19f99cee | 178 | return inode; |
a2a4a7e4 | 179 | } |
19f99cee JK |
180 | if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi)) |
181 | goto make_now; | |
182 | ||
183 | ret = do_read_inode(inode); | |
184 | if (ret) | |
185 | goto bad_inode; | |
19f99cee JK |
186 | make_now: |
187 | if (ino == F2FS_NODE_INO(sbi)) { | |
188 | inode->i_mapping->a_ops = &f2fs_node_aops; | |
189 | mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO); | |
190 | } else if (ino == F2FS_META_INO(sbi)) { | |
191 | inode->i_mapping->a_ops = &f2fs_meta_aops; | |
192 | mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO); | |
193 | } else if (S_ISREG(inode->i_mode)) { | |
194 | inode->i_op = &f2fs_file_inode_operations; | |
195 | inode->i_fop = &f2fs_file_operations; | |
196 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
197 | } else if (S_ISDIR(inode->i_mode)) { | |
198 | inode->i_op = &f2fs_dir_inode_operations; | |
199 | inode->i_fop = &f2fs_dir_operations; | |
200 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
a78186eb | 201 | mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_HIGH_ZERO); |
19f99cee | 202 | } else if (S_ISLNK(inode->i_mode)) { |
cbaf042a JK |
203 | if (f2fs_encrypted_inode(inode)) |
204 | inode->i_op = &f2fs_encrypted_symlink_inode_operations; | |
205 | else | |
206 | inode->i_op = &f2fs_symlink_inode_operations; | |
21fc61c7 | 207 | inode_nohighmem(inode); |
19f99cee JK |
208 | inode->i_mapping->a_ops = &f2fs_dblock_aops; |
209 | } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || | |
210 | S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { | |
211 | inode->i_op = &f2fs_special_inode_operations; | |
212 | init_special_inode(inode, inode->i_mode, inode->i_rdev); | |
213 | } else { | |
214 | ret = -EIO; | |
215 | goto bad_inode; | |
216 | } | |
217 | unlock_new_inode(inode); | |
a2a4a7e4 | 218 | trace_f2fs_iget(inode); |
19f99cee JK |
219 | return inode; |
220 | ||
221 | bad_inode: | |
222 | iget_failed(inode); | |
a2a4a7e4 | 223 | trace_f2fs_iget_exit(inode, ret); |
19f99cee JK |
224 | return ERR_PTR(ret); |
225 | } | |
226 | ||
12719ae1 | 227 | int update_inode(struct inode *inode, struct page *node_page) |
19f99cee | 228 | { |
19f99cee JK |
229 | struct f2fs_inode *ri; |
230 | ||
fec1d657 | 231 | f2fs_wait_on_page_writeback(node_page, NODE, true); |
19f99cee | 232 | |
58bfaf44 | 233 | ri = F2FS_INODE(node_page); |
19f99cee JK |
234 | |
235 | ri->i_mode = cpu_to_le16(inode->i_mode); | |
236 | ri->i_advise = F2FS_I(inode)->i_advise; | |
237 | ri->i_uid = cpu_to_le32(i_uid_read(inode)); | |
238 | ri->i_gid = cpu_to_le32(i_gid_read(inode)); | |
239 | ri->i_links = cpu_to_le32(inode->i_nlink); | |
240 | ri->i_size = cpu_to_le64(i_size_read(inode)); | |
241 | ri->i_blocks = cpu_to_le64(inode->i_blocks); | |
0c872e2d | 242 | |
3e72f721 JK |
243 | if (F2FS_I(inode)->extent_tree) |
244 | set_raw_extent(&F2FS_I(inode)->extent_tree->largest, | |
245 | &ri->i_ext); | |
246 | else | |
247 | memset(&ri->i_ext, 0, sizeof(ri->i_ext)); | |
91942321 | 248 | set_raw_inline(inode, ri); |
19f99cee JK |
249 | |
250 | ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec); | |
251 | ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); | |
252 | ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec); | |
253 | ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); | |
254 | ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
255 | ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); | |
256 | ri->i_current_depth = cpu_to_le32(F2FS_I(inode)->i_current_depth); | |
257 | ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid); | |
258 | ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags); | |
6666e6aa | 259 | ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino); |
19f99cee | 260 | ri->i_generation = cpu_to_le32(inode->i_generation); |
38431545 | 261 | ri->i_dir_level = F2FS_I(inode)->i_dir_level; |
7d79e75f | 262 | |
3d1e3807 | 263 | __set_inode_rdev(inode, ri); |
398b1ac5 | 264 | set_cold_node(inode, node_page); |
0f18b462 | 265 | f2fs_inode_synced(inode); |
12719ae1 | 266 | |
2049d4fc JK |
267 | /* deleted inode */ |
268 | if (inode->i_nlink == 0) | |
269 | clear_inline_node(node_page); | |
270 | ||
12719ae1 | 271 | return set_page_dirty(node_page); |
19f99cee JK |
272 | } |
273 | ||
12719ae1 | 274 | int update_inode_page(struct inode *inode) |
19f99cee | 275 | { |
4081363f | 276 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
19f99cee | 277 | struct page *node_page; |
12719ae1 | 278 | int ret = 0; |
744602cf | 279 | retry: |
19f99cee | 280 | node_page = get_node_page(sbi, inode->i_ino); |
744602cf JK |
281 | if (IS_ERR(node_page)) { |
282 | int err = PTR_ERR(node_page); | |
283 | if (err == -ENOMEM) { | |
284 | cond_resched(); | |
285 | goto retry; | |
286 | } else if (err != -ENOENT) { | |
38f91ca8 | 287 | f2fs_stop_checkpoint(sbi, false); |
744602cf | 288 | } |
0f18b462 | 289 | f2fs_inode_synced(inode); |
12719ae1 | 290 | return 0; |
744602cf | 291 | } |
12719ae1 | 292 | ret = update_inode(inode, node_page); |
19f99cee | 293 | f2fs_put_page(node_page, 1); |
12719ae1 | 294 | return ret; |
19f99cee JK |
295 | } |
296 | ||
39936837 JK |
297 | int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc) |
298 | { | |
4081363f | 299 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
39936837 JK |
300 | |
301 | if (inode->i_ino == F2FS_NODE_INO(sbi) || | |
302 | inode->i_ino == F2FS_META_INO(sbi)) | |
303 | return 0; | |
304 | ||
91942321 | 305 | if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) |
b3783873 JK |
306 | return 0; |
307 | ||
39936837 | 308 | /* |
c5cd29d2 | 309 | * We need to balance fs here to prevent from producing dirty node pages |
39936837 JK |
310 | * during the urgent cleaning time when runing out of free sections. |
311 | */ | |
12719ae1 | 312 | if (update_inode_page(inode)) |
2c4db1a6 | 313 | f2fs_balance_fs(sbi, true); |
744602cf | 314 | return 0; |
39936837 JK |
315 | } |
316 | ||
0a8165d7 | 317 | /* |
19f99cee JK |
318 | * Called at the last iput() if i_nlink is zero |
319 | */ | |
320 | void f2fs_evict_inode(struct inode *inode) | |
321 | { | |
4081363f | 322 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
91942321 | 323 | nid_t xnid = F2FS_I(inode)->i_xattr_nid; |
13ec7297 | 324 | int err = 0; |
19f99cee | 325 | |
88b88a66 | 326 | /* some remained atomic pages should discarded */ |
1e84371f | 327 | if (f2fs_is_atomic_file(inode)) |
29b96b54 | 328 | drop_inmem_pages(inode); |
88b88a66 | 329 | |
a2a4a7e4 | 330 | trace_f2fs_evict_inode(inode); |
91b0abe3 | 331 | truncate_inode_pages_final(&inode->i_data); |
19f99cee JK |
332 | |
333 | if (inode->i_ino == F2FS_NODE_INO(sbi) || | |
334 | inode->i_ino == F2FS_META_INO(sbi)) | |
dbf20cb2 | 335 | goto out_clear; |
19f99cee | 336 | |
a7ffdbe2 | 337 | f2fs_bug_on(sbi, get_dirty_pages(inode)); |
c227f912 | 338 | remove_dirty_inode(inode); |
19f99cee | 339 | |
3e72f721 JK |
340 | f2fs_destroy_extent_tree(inode); |
341 | ||
19f99cee JK |
342 | if (inode->i_nlink || is_bad_inode(inode)) |
343 | goto no_delete; | |
344 | ||
d6212a5f | 345 | sb_start_intwrite(inode->i_sb); |
91942321 | 346 | set_inode_flag(inode, FI_NO_ALLOC); |
19f99cee | 347 | i_size_write(inode, 0); |
4c0c2949 | 348 | retry: |
19f99cee | 349 | if (F2FS_HAS_BLOCKS(inode)) |
13ec7297 | 350 | err = f2fs_truncate(inode, true); |
19f99cee | 351 | |
13ec7297 CY |
352 | if (!err) { |
353 | f2fs_lock_op(sbi); | |
354 | err = remove_inode_page(inode); | |
355 | f2fs_unlock_op(sbi); | |
356 | } | |
39936837 | 357 | |
4c0c2949 JK |
358 | /* give more chances, if ENOMEM case */ |
359 | if (err == -ENOMEM) { | |
360 | err = 0; | |
361 | goto retry; | |
362 | } | |
363 | ||
0f18b462 JK |
364 | if (err) |
365 | update_inode_page(inode); | |
d6212a5f | 366 | sb_end_intwrite(inode->i_sb); |
19f99cee | 367 | no_delete: |
d5e8f6c9 | 368 | stat_dec_inline_xattr(inode); |
3289c061 | 369 | stat_dec_inline_dir(inode); |
e7a2bf22 | 370 | stat_dec_inline_inode(inode); |
0bdee482 | 371 | |
8198899b | 372 | invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, inode->i_ino); |
002a41ca CY |
373 | if (xnid) |
374 | invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid); | |
91942321 | 375 | if (is_inode_flag_set(inode, FI_APPEND_WRITE)) |
a49324f1 | 376 | add_ino_entry(sbi, inode->i_ino, APPEND_INO); |
91942321 | 377 | if (is_inode_flag_set(inode, FI_UPDATE_WRITE)) |
a49324f1 | 378 | add_ino_entry(sbi, inode->i_ino, UPDATE_INO); |
91942321 | 379 | if (is_inode_flag_set(inode, FI_FREE_NID)) { |
221149c0 | 380 | alloc_nid_failed(sbi, inode->i_ino); |
91942321 | 381 | clear_inode_flag(inode, FI_FREE_NID); |
c9b63bd0 | 382 | } |
29234b1d JK |
383 | f2fs_bug_on(sbi, err && |
384 | !exist_written_data(sbi, inode->i_ino, ORPHAN_INO)); | |
dbf20cb2 | 385 | out_clear: |
0b81d077 | 386 | fscrypt_put_encryption_info(inode, NULL); |
0f18b462 JK |
387 | |
388 | f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE)); | |
dbf20cb2 | 389 | clear_inode(inode); |
19f99cee | 390 | } |
44c16156 JK |
391 | |
392 | /* caller should call f2fs_lock_op() */ | |
393 | void handle_failed_inode(struct inode *inode) | |
394 | { | |
395 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
221149c0 | 396 | struct node_info ni; |
44c16156 | 397 | |
221149c0 | 398 | /* don't make bad inode, since it becomes a regular file. */ |
44c16156 JK |
399 | unlock_new_inode(inode); |
400 | ||
13ec7297 | 401 | /* |
13ec7297 CY |
402 | * Note: we should add inode to orphan list before f2fs_unlock_op() |
403 | * so we can prevent losing this orphan when encoutering checkpoint | |
404 | * and following suddenly power-off. | |
405 | */ | |
221149c0 JK |
406 | get_node_info(sbi, inode->i_ino, &ni); |
407 | ||
408 | if (ni.blk_addr != NULL_ADDR) { | |
409 | int err = acquire_orphan_inode(sbi); | |
410 | if (err) { | |
411 | set_sbi_flag(sbi, SBI_NEED_FSCK); | |
412 | f2fs_msg(sbi->sb, KERN_WARNING, | |
413 | "Too many orphan inodes, run fsck to fix."); | |
414 | } else { | |
13ec7297 | 415 | add_orphan_inode(sbi, inode->i_ino); |
221149c0 JK |
416 | } |
417 | alloc_nid_done(sbi, inode->i_ino); | |
418 | } else { | |
91942321 | 419 | set_inode_flag(inode, FI_FREE_NID); |
13ec7297 | 420 | } |
44c16156 | 421 | |
44c16156 JK |
422 | f2fs_unlock_op(sbi); |
423 | ||
424 | /* iput will drop the inode object */ | |
425 | iput(inode); | |
426 | } |