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 | ||
b3d208f9 JK |
70 | static int __recover_inline_status(struct inode *inode, struct page *ipage) |
71 | { | |
72 | void *inline_data = inline_data_addr(ipage); | |
73 | struct f2fs_inode *ri; | |
74 | void *zbuf; | |
75 | ||
76 | zbuf = kzalloc(MAX_INLINE_DATA, GFP_NOFS); | |
77 | if (!zbuf) | |
78 | return -ENOMEM; | |
79 | ||
80 | if (!memcmp(zbuf, inline_data, MAX_INLINE_DATA)) { | |
81 | kfree(zbuf); | |
82 | return 0; | |
83 | } | |
84 | kfree(zbuf); | |
85 | ||
86 | f2fs_wait_on_page_writeback(ipage, NODE); | |
87 | set_inode_flag(F2FS_I(inode), FI_DATA_EXIST); | |
88 | ||
89 | ri = F2FS_INODE(ipage); | |
90 | set_raw_inline(F2FS_I(inode), ri); | |
91 | set_page_dirty(ipage); | |
92 | return 0; | |
93 | } | |
94 | ||
19f99cee JK |
95 | static int do_read_inode(struct inode *inode) |
96 | { | |
4081363f | 97 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
19f99cee JK |
98 | struct f2fs_inode_info *fi = F2FS_I(inode); |
99 | struct page *node_page; | |
19f99cee | 100 | struct f2fs_inode *ri; |
b3d208f9 | 101 | int err = 0; |
19f99cee JK |
102 | |
103 | /* Check if ino is within scope */ | |
064e0823 NJ |
104 | if (check_nid_range(sbi, inode->i_ino)) { |
105 | f2fs_msg(inode->i_sb, KERN_ERR, "bad inode number: %lu", | |
106 | (unsigned long) inode->i_ino); | |
d6b7d4b3 | 107 | WARN_ON(1); |
064e0823 NJ |
108 | return -EINVAL; |
109 | } | |
19f99cee JK |
110 | |
111 | node_page = get_node_page(sbi, inode->i_ino); | |
112 | if (IS_ERR(node_page)) | |
113 | return PTR_ERR(node_page); | |
114 | ||
58bfaf44 | 115 | ri = F2FS_INODE(node_page); |
19f99cee JK |
116 | |
117 | inode->i_mode = le16_to_cpu(ri->i_mode); | |
118 | i_uid_write(inode, le32_to_cpu(ri->i_uid)); | |
119 | i_gid_write(inode, le32_to_cpu(ri->i_gid)); | |
120 | set_nlink(inode, le32_to_cpu(ri->i_links)); | |
121 | inode->i_size = le64_to_cpu(ri->i_size); | |
122 | inode->i_blocks = le64_to_cpu(ri->i_blocks); | |
123 | ||
124 | inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime); | |
125 | inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime); | |
126 | inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime); | |
127 | inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec); | |
128 | inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec); | |
129 | inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec); | |
130 | inode->i_generation = le32_to_cpu(ri->i_generation); | |
131 | ||
132 | fi->i_current_depth = le32_to_cpu(ri->i_current_depth); | |
133 | fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid); | |
134 | fi->i_flags = le32_to_cpu(ri->i_flags); | |
135 | fi->flags = 0; | |
19f99cee | 136 | fi->i_advise = ri->i_advise; |
6666e6aa | 137 | fi->i_pino = le32_to_cpu(ri->i_pino); |
38431545 | 138 | fi->i_dir_level = ri->i_dir_level; |
3d1e3807 | 139 | |
19f99cee | 140 | get_extent_info(&fi->ext, ri->i_ext); |
444c580f | 141 | get_inline_info(fi, ri); |
3d1e3807 | 142 | |
b3d208f9 JK |
143 | /* check data exist */ |
144 | if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode)) | |
145 | err = __recover_inline_status(inode, node_page); | |
146 | ||
3d1e3807 JK |
147 | /* get rdev by using inline_info */ |
148 | __get_inode_rdev(inode, ri); | |
149 | ||
19f99cee | 150 | f2fs_put_page(node_page, 1); |
9d1015dd JK |
151 | |
152 | stat_inc_inline_inode(inode); | |
153 | stat_inc_inline_dir(inode); | |
154 | ||
b3d208f9 | 155 | return err; |
19f99cee JK |
156 | } |
157 | ||
158 | struct inode *f2fs_iget(struct super_block *sb, unsigned long ino) | |
159 | { | |
160 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
161 | struct inode *inode; | |
a2a4a7e4 | 162 | int ret = 0; |
19f99cee JK |
163 | |
164 | inode = iget_locked(sb, ino); | |
165 | if (!inode) | |
166 | return ERR_PTR(-ENOMEM); | |
a2a4a7e4 NJ |
167 | |
168 | if (!(inode->i_state & I_NEW)) { | |
169 | trace_f2fs_iget(inode); | |
19f99cee | 170 | return inode; |
a2a4a7e4 | 171 | } |
19f99cee JK |
172 | if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi)) |
173 | goto make_now; | |
174 | ||
175 | ret = do_read_inode(inode); | |
176 | if (ret) | |
177 | goto bad_inode; | |
19f99cee JK |
178 | make_now: |
179 | if (ino == F2FS_NODE_INO(sbi)) { | |
180 | inode->i_mapping->a_ops = &f2fs_node_aops; | |
181 | mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO); | |
182 | } else if (ino == F2FS_META_INO(sbi)) { | |
183 | inode->i_mapping->a_ops = &f2fs_meta_aops; | |
184 | mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO); | |
185 | } else if (S_ISREG(inode->i_mode)) { | |
186 | inode->i_op = &f2fs_file_inode_operations; | |
187 | inode->i_fop = &f2fs_file_operations; | |
188 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
189 | } else if (S_ISDIR(inode->i_mode)) { | |
190 | inode->i_op = &f2fs_dir_inode_operations; | |
191 | inode->i_fop = &f2fs_dir_operations; | |
192 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
a78186eb | 193 | mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_HIGH_ZERO); |
19f99cee JK |
194 | } else if (S_ISLNK(inode->i_mode)) { |
195 | inode->i_op = &f2fs_symlink_inode_operations; | |
196 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
197 | } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || | |
198 | S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { | |
199 | inode->i_op = &f2fs_special_inode_operations; | |
200 | init_special_inode(inode, inode->i_mode, inode->i_rdev); | |
201 | } else { | |
202 | ret = -EIO; | |
203 | goto bad_inode; | |
204 | } | |
205 | unlock_new_inode(inode); | |
a2a4a7e4 | 206 | trace_f2fs_iget(inode); |
19f99cee JK |
207 | return inode; |
208 | ||
209 | bad_inode: | |
210 | iget_failed(inode); | |
a2a4a7e4 | 211 | trace_f2fs_iget_exit(inode, ret); |
19f99cee JK |
212 | return ERR_PTR(ret); |
213 | } | |
214 | ||
215 | void update_inode(struct inode *inode, struct page *node_page) | |
216 | { | |
19f99cee JK |
217 | struct f2fs_inode *ri; |
218 | ||
5514f0aa | 219 | f2fs_wait_on_page_writeback(node_page, NODE); |
19f99cee | 220 | |
58bfaf44 | 221 | ri = F2FS_INODE(node_page); |
19f99cee JK |
222 | |
223 | ri->i_mode = cpu_to_le16(inode->i_mode); | |
224 | ri->i_advise = F2FS_I(inode)->i_advise; | |
225 | ri->i_uid = cpu_to_le32(i_uid_read(inode)); | |
226 | ri->i_gid = cpu_to_le32(i_gid_read(inode)); | |
227 | ri->i_links = cpu_to_le32(inode->i_nlink); | |
228 | ri->i_size = cpu_to_le64(i_size_read(inode)); | |
229 | ri->i_blocks = cpu_to_le64(inode->i_blocks); | |
230 | set_raw_extent(&F2FS_I(inode)->ext, &ri->i_ext); | |
444c580f | 231 | set_raw_inline(F2FS_I(inode), ri); |
19f99cee JK |
232 | |
233 | ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec); | |
234 | ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); | |
235 | ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec); | |
236 | ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); | |
237 | ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
238 | ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); | |
239 | ri->i_current_depth = cpu_to_le32(F2FS_I(inode)->i_current_depth); | |
240 | ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid); | |
241 | ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags); | |
6666e6aa | 242 | ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino); |
19f99cee | 243 | ri->i_generation = cpu_to_le32(inode->i_generation); |
38431545 | 244 | ri->i_dir_level = F2FS_I(inode)->i_dir_level; |
7d79e75f | 245 | |
3d1e3807 | 246 | __set_inode_rdev(inode, ri); |
398b1ac5 | 247 | set_cold_node(inode, node_page); |
19f99cee | 248 | set_page_dirty(node_page); |
3d1e3807 | 249 | |
b3783873 | 250 | clear_inode_flag(F2FS_I(inode), FI_DIRTY_INODE); |
19f99cee JK |
251 | } |
252 | ||
744602cf | 253 | void update_inode_page(struct inode *inode) |
19f99cee | 254 | { |
4081363f | 255 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
19f99cee | 256 | struct page *node_page; |
744602cf | 257 | retry: |
19f99cee | 258 | node_page = get_node_page(sbi, inode->i_ino); |
744602cf JK |
259 | if (IS_ERR(node_page)) { |
260 | int err = PTR_ERR(node_page); | |
261 | if (err == -ENOMEM) { | |
262 | cond_resched(); | |
263 | goto retry; | |
264 | } else if (err != -ENOENT) { | |
265 | f2fs_stop_checkpoint(sbi); | |
266 | } | |
267 | return; | |
268 | } | |
19f99cee JK |
269 | update_inode(inode, node_page); |
270 | f2fs_put_page(node_page, 1); | |
19f99cee JK |
271 | } |
272 | ||
39936837 JK |
273 | int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc) |
274 | { | |
4081363f | 275 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
39936837 JK |
276 | |
277 | if (inode->i_ino == F2FS_NODE_INO(sbi) || | |
278 | inode->i_ino == F2FS_META_INO(sbi)) | |
279 | return 0; | |
280 | ||
b3783873 JK |
281 | if (!is_inode_flag_set(F2FS_I(inode), FI_DIRTY_INODE)) |
282 | return 0; | |
283 | ||
39936837 JK |
284 | /* |
285 | * We need to lock here to prevent from producing dirty node pages | |
286 | * during the urgent cleaning time when runing out of free sections. | |
287 | */ | |
e479556b | 288 | f2fs_lock_op(sbi); |
744602cf | 289 | update_inode_page(inode); |
e479556b | 290 | f2fs_unlock_op(sbi); |
92c4342f JX |
291 | |
292 | if (wbc) | |
293 | f2fs_balance_fs(sbi); | |
294 | ||
744602cf | 295 | return 0; |
39936837 JK |
296 | } |
297 | ||
0a8165d7 | 298 | /* |
19f99cee JK |
299 | * Called at the last iput() if i_nlink is zero |
300 | */ | |
301 | void f2fs_evict_inode(struct inode *inode) | |
302 | { | |
4081363f | 303 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
002a41ca | 304 | nid_t xnid = F2FS_I(inode)->i_xattr_nid; |
19f99cee | 305 | |
88b88a66 | 306 | /* some remained atomic pages should discarded */ |
02a1335f | 307 | if (f2fs_is_atomic_file(inode) || f2fs_is_volatile_file(inode)) |
88b88a66 JK |
308 | commit_inmem_pages(inode, true); |
309 | ||
a2a4a7e4 | 310 | trace_f2fs_evict_inode(inode); |
91b0abe3 | 311 | truncate_inode_pages_final(&inode->i_data); |
19f99cee JK |
312 | |
313 | if (inode->i_ino == F2FS_NODE_INO(sbi) || | |
314 | inode->i_ino == F2FS_META_INO(sbi)) | |
dbf20cb2 | 315 | goto out_clear; |
19f99cee | 316 | |
a7ffdbe2 | 317 | f2fs_bug_on(sbi, get_dirty_pages(inode)); |
19f99cee JK |
318 | remove_dirty_dir_inode(inode); |
319 | ||
320 | if (inode->i_nlink || is_bad_inode(inode)) | |
321 | goto no_delete; | |
322 | ||
d6212a5f | 323 | sb_start_intwrite(inode->i_sb); |
19f99cee JK |
324 | set_inode_flag(F2FS_I(inode), FI_NO_ALLOC); |
325 | i_size_write(inode, 0); | |
326 | ||
327 | if (F2FS_HAS_BLOCKS(inode)) | |
328 | f2fs_truncate(inode); | |
329 | ||
e479556b | 330 | f2fs_lock_op(sbi); |
19f99cee | 331 | remove_inode_page(inode); |
e479556b | 332 | f2fs_unlock_op(sbi); |
39936837 | 333 | |
d6212a5f | 334 | sb_end_intwrite(inode->i_sb); |
19f99cee | 335 | no_delete: |
3289c061 | 336 | stat_dec_inline_dir(inode); |
e7a2bf22 | 337 | stat_dec_inline_inode(inode); |
8198899b | 338 | invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, inode->i_ino); |
002a41ca CY |
339 | if (xnid) |
340 | invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid); | |
fff04f90 JK |
341 | if (is_inode_flag_set(F2FS_I(inode), FI_APPEND_WRITE)) |
342 | add_dirty_inode(sbi, inode->i_ino, APPEND_INO); | |
343 | if (is_inode_flag_set(F2FS_I(inode), FI_UPDATE_WRITE)) | |
344 | add_dirty_inode(sbi, inode->i_ino, UPDATE_INO); | |
dbf20cb2 CY |
345 | out_clear: |
346 | clear_inode(inode); | |
19f99cee | 347 | } |
44c16156 JK |
348 | |
349 | /* caller should call f2fs_lock_op() */ | |
350 | void handle_failed_inode(struct inode *inode) | |
351 | { | |
352 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
353 | ||
354 | clear_nlink(inode); | |
355 | make_bad_inode(inode); | |
356 | unlock_new_inode(inode); | |
357 | ||
358 | i_size_write(inode, 0); | |
359 | if (F2FS_HAS_BLOCKS(inode)) | |
360 | f2fs_truncate(inode); | |
361 | ||
362 | remove_inode_page(inode); | |
44c16156 | 363 | |
b3d208f9 | 364 | clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA); |
3289c061 | 365 | clear_inode_flag(F2FS_I(inode), FI_INLINE_DENTRY); |
44c16156 JK |
366 | alloc_nid_failed(sbi, inode->i_ino); |
367 | f2fs_unlock_op(sbi); | |
368 | ||
369 | /* iput will drop the inode object */ | |
370 | iput(inode); | |
371 | } |