Commit | Line | Data |
---|---|---|
ccd979bd MF |
1 | /* -*- mode: c; c-basic-offset: 8; -*- |
2 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
3 | * | |
4 | * inode.c | |
5 | * | |
6 | * vfs' aops, fops, dops and iops | |
7 | * | |
8 | * Copyright (C) 2002, 2004 Oracle. All rights reserved. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public | |
12 | * License as published by the Free Software Foundation; either | |
13 | * version 2 of the License, or (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public | |
21 | * License along with this program; if not, write to the | |
22 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | * Boston, MA 021110-1307, USA. | |
24 | */ | |
25 | ||
26 | #include <linux/fs.h> | |
27 | #include <linux/types.h> | |
ccd979bd MF |
28 | #include <linux/highmem.h> |
29 | #include <linux/pagemap.h> | |
a90714c1 | 30 | #include <linux/quotaops.h> |
ccd979bd MF |
31 | |
32 | #include <asm/byteorder.h> | |
33 | ||
ccd979bd MF |
34 | #include <cluster/masklog.h> |
35 | ||
36 | #include "ocfs2.h" | |
37 | ||
38 | #include "alloc.h" | |
9b7895ef | 39 | #include "dir.h" |
d6b32bbb | 40 | #include "blockcheck.h" |
ccd979bd MF |
41 | #include "dlmglue.h" |
42 | #include "extent_map.h" | |
43 | #include "file.h" | |
b4df6ed8 | 44 | #include "heartbeat.h" |
ccd979bd MF |
45 | #include "inode.h" |
46 | #include "journal.h" | |
47 | #include "namei.h" | |
48 | #include "suballoc.h" | |
49 | #include "super.h" | |
50 | #include "symlink.h" | |
51 | #include "sysfile.h" | |
52 | #include "uptodate.h" | |
cf1d6c76 | 53 | #include "xattr.h" |
8b2c0dba | 54 | #include "refcounttree.h" |
64f3b269 | 55 | #include "ocfs2_trace.h" |
ccd979bd MF |
56 | |
57 | #include "buffer_head_io.h" | |
58 | ||
ccd979bd MF |
59 | struct ocfs2_find_inode_args |
60 | { | |
61 | u64 fi_blkno; | |
62 | unsigned long fi_ino; | |
63 | unsigned int fi_flags; | |
5fa0613e | 64 | unsigned int fi_sysfile_type; |
ccd979bd MF |
65 | }; |
66 | ||
5fa0613e JK |
67 | static struct lock_class_key ocfs2_sysfile_lock_key[NUM_SYSTEM_INODES]; |
68 | ||
ccd979bd MF |
69 | static int ocfs2_read_locked_inode(struct inode *inode, |
70 | struct ocfs2_find_inode_args *args); | |
71 | static int ocfs2_init_locked_inode(struct inode *inode, void *opaque); | |
72 | static int ocfs2_find_actor(struct inode *inode, void *opaque); | |
73 | static int ocfs2_truncate_for_delete(struct ocfs2_super *osb, | |
74 | struct inode *inode, | |
75 | struct buffer_head *fe_bh); | |
76 | ||
ca4d147e HP |
77 | void ocfs2_set_inode_flags(struct inode *inode) |
78 | { | |
79 | unsigned int flags = OCFS2_I(inode)->ip_attr; | |
80 | ||
81 | inode->i_flags &= ~(S_IMMUTABLE | | |
82 | S_SYNC | S_APPEND | S_NOATIME | S_DIRSYNC); | |
83 | ||
84 | if (flags & OCFS2_IMMUTABLE_FL) | |
85 | inode->i_flags |= S_IMMUTABLE; | |
86 | ||
87 | if (flags & OCFS2_SYNC_FL) | |
88 | inode->i_flags |= S_SYNC; | |
89 | if (flags & OCFS2_APPEND_FL) | |
90 | inode->i_flags |= S_APPEND; | |
91 | if (flags & OCFS2_NOATIME_FL) | |
92 | inode->i_flags |= S_NOATIME; | |
93 | if (flags & OCFS2_DIRSYNC_FL) | |
94 | inode->i_flags |= S_DIRSYNC; | |
95 | } | |
96 | ||
6e4b0d56 JK |
97 | /* Propagate flags from i_flags to OCFS2_I(inode)->ip_attr */ |
98 | void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi) | |
99 | { | |
100 | unsigned int flags = oi->vfs_inode.i_flags; | |
101 | ||
102 | oi->ip_attr &= ~(OCFS2_SYNC_FL|OCFS2_APPEND_FL| | |
103 | OCFS2_IMMUTABLE_FL|OCFS2_NOATIME_FL|OCFS2_DIRSYNC_FL); | |
104 | if (flags & S_SYNC) | |
105 | oi->ip_attr |= OCFS2_SYNC_FL; | |
106 | if (flags & S_APPEND) | |
107 | oi->ip_attr |= OCFS2_APPEND_FL; | |
108 | if (flags & S_IMMUTABLE) | |
109 | oi->ip_attr |= OCFS2_IMMUTABLE_FL; | |
110 | if (flags & S_NOATIME) | |
111 | oi->ip_attr |= OCFS2_NOATIME_FL; | |
112 | if (flags & S_DIRSYNC) | |
113 | oi->ip_attr |= OCFS2_DIRSYNC_FL; | |
114 | } | |
115 | ||
6ca497a8 | 116 | struct inode *ocfs2_ilookup(struct super_block *sb, u64 blkno) |
117 | { | |
118 | struct ocfs2_find_inode_args args; | |
119 | ||
120 | args.fi_blkno = blkno; | |
121 | args.fi_flags = 0; | |
122 | args.fi_ino = ino_from_blkno(sb, blkno); | |
123 | args.fi_sysfile_type = 0; | |
124 | ||
125 | return ilookup5(sb, blkno, ocfs2_find_actor, &args); | |
126 | } | |
5fa0613e JK |
127 | struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 blkno, unsigned flags, |
128 | int sysfile_type) | |
ccd979bd MF |
129 | { |
130 | struct inode *inode = NULL; | |
131 | struct super_block *sb = osb->sb; | |
132 | struct ocfs2_find_inode_args args; | |
2931cdcb | 133 | journal_t *journal = OCFS2_SB(sb)->journal->j_journal; |
ccd979bd | 134 | |
64f3b269 TM |
135 | trace_ocfs2_iget_begin((unsigned long long)blkno, flags, |
136 | sysfile_type); | |
ccd979bd MF |
137 | |
138 | /* Ok. By now we've either got the offsets passed to us by the | |
139 | * caller, or we just pulled them off the bh. Lets do some | |
140 | * sanity checks to make sure they're OK. */ | |
141 | if (blkno == 0) { | |
142 | inode = ERR_PTR(-EINVAL); | |
143 | mlog_errno(PTR_ERR(inode)); | |
144 | goto bail; | |
145 | } | |
146 | ||
147 | args.fi_blkno = blkno; | |
24c19ef4 | 148 | args.fi_flags = flags; |
ccd979bd | 149 | args.fi_ino = ino_from_blkno(sb, blkno); |
5fa0613e | 150 | args.fi_sysfile_type = sysfile_type; |
ccd979bd MF |
151 | |
152 | inode = iget5_locked(sb, args.fi_ino, ocfs2_find_actor, | |
153 | ocfs2_init_locked_inode, &args); | |
154 | /* inode was *not* in the inode cache. 2.6.x requires | |
155 | * us to do our own read_inode call and unlock it | |
156 | * afterwards. */ | |
ccd979bd MF |
157 | if (inode == NULL) { |
158 | inode = ERR_PTR(-ENOMEM); | |
159 | mlog_errno(PTR_ERR(inode)); | |
160 | goto bail; | |
161 | } | |
64f3b269 | 162 | trace_ocfs2_iget5_locked(inode->i_state); |
6218b90e | 163 | if (inode->i_state & I_NEW) { |
6218b90e TM |
164 | ocfs2_read_locked_inode(inode, &args); |
165 | unlock_new_inode(inode); | |
166 | } | |
ccd979bd MF |
167 | if (is_bad_inode(inode)) { |
168 | iput(inode); | |
169 | inode = ERR_PTR(-ESTALE); | |
ccd979bd MF |
170 | goto bail; |
171 | } | |
172 | ||
2931cdcb DW |
173 | /* |
174 | * Set transaction id's of transactions that have to be committed | |
175 | * to finish f[data]sync. We set them to currently running transaction | |
176 | * as we cannot be sure that the inode or some of its metadata isn't | |
177 | * part of the transaction - the inode could have been reclaimed and | |
178 | * now it is reread from disk. | |
179 | */ | |
180 | if (journal) { | |
181 | transaction_t *transaction; | |
182 | tid_t tid; | |
183 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
184 | ||
185 | read_lock(&journal->j_state_lock); | |
186 | if (journal->j_running_transaction) | |
187 | transaction = journal->j_running_transaction; | |
188 | else | |
189 | transaction = journal->j_committing_transaction; | |
190 | if (transaction) | |
191 | tid = transaction->t_tid; | |
192 | else | |
193 | tid = journal->j_commit_sequence; | |
194 | read_unlock(&journal->j_state_lock); | |
195 | oi->i_sync_tid = tid; | |
196 | oi->i_datasync_tid = tid; | |
197 | } | |
198 | ||
ccd979bd MF |
199 | bail: |
200 | if (!IS_ERR(inode)) { | |
64f3b269 TM |
201 | trace_ocfs2_iget_end(inode, |
202 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
6a1bd4a5 | 203 | } |
ccd979bd MF |
204 | |
205 | return inode; | |
206 | } | |
207 | ||
208 | ||
209 | /* | |
210 | * here's how inodes get read from disk: | |
211 | * iget5_locked -> find_actor -> OCFS2_FIND_ACTOR | |
212 | * found? : return the in-memory inode | |
213 | * not found? : get_new_inode -> OCFS2_INIT_LOCKED_INODE | |
214 | */ | |
215 | ||
216 | static int ocfs2_find_actor(struct inode *inode, void *opaque) | |
217 | { | |
218 | struct ocfs2_find_inode_args *args = NULL; | |
219 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
220 | int ret = 0; | |
221 | ||
ccd979bd MF |
222 | args = opaque; |
223 | ||
224 | mlog_bug_on_msg(!inode, "No inode in find actor!\n"); | |
225 | ||
64f3b269 TM |
226 | trace_ocfs2_find_actor(inode, inode->i_ino, opaque, args->fi_blkno); |
227 | ||
ccd979bd MF |
228 | if (oi->ip_blkno != args->fi_blkno) |
229 | goto bail; | |
230 | ||
ccd979bd MF |
231 | ret = 1; |
232 | bail: | |
ccd979bd MF |
233 | return ret; |
234 | } | |
235 | ||
236 | /* | |
237 | * initialize the new inode, but don't do anything that would cause | |
238 | * us to sleep. | |
239 | * return 0 on success, 1 on failure | |
240 | */ | |
241 | static int ocfs2_init_locked_inode(struct inode *inode, void *opaque) | |
242 | { | |
243 | struct ocfs2_find_inode_args *args = opaque; | |
cb25797d JK |
244 | static struct lock_class_key ocfs2_quota_ip_alloc_sem_key, |
245 | ocfs2_file_ip_alloc_sem_key; | |
ccd979bd | 246 | |
ccd979bd MF |
247 | inode->i_ino = args->fi_ino; |
248 | OCFS2_I(inode)->ip_blkno = args->fi_blkno; | |
5fa0613e JK |
249 | if (args->fi_sysfile_type != 0) |
250 | lockdep_set_class(&inode->i_mutex, | |
251 | &ocfs2_sysfile_lock_key[args->fi_sysfile_type]); | |
cb25797d JK |
252 | if (args->fi_sysfile_type == USER_QUOTA_SYSTEM_INODE || |
253 | args->fi_sysfile_type == GROUP_QUOTA_SYSTEM_INODE || | |
254 | args->fi_sysfile_type == LOCAL_USER_QUOTA_SYSTEM_INODE || | |
255 | args->fi_sysfile_type == LOCAL_GROUP_QUOTA_SYSTEM_INODE) | |
256 | lockdep_set_class(&OCFS2_I(inode)->ip_alloc_sem, | |
257 | &ocfs2_quota_ip_alloc_sem_key); | |
258 | else | |
259 | lockdep_set_class(&OCFS2_I(inode)->ip_alloc_sem, | |
260 | &ocfs2_file_ip_alloc_sem_key); | |
ccd979bd | 261 | |
ccd979bd MF |
262 | return 0; |
263 | } | |
264 | ||
b657c95c JB |
265 | void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe, |
266 | int create_ino) | |
ccd979bd MF |
267 | { |
268 | struct super_block *sb; | |
269 | struct ocfs2_super *osb; | |
53da4939 | 270 | int use_plocks = 1; |
ccd979bd | 271 | |
ccd979bd MF |
272 | sb = inode->i_sb; |
273 | osb = OCFS2_SB(sb); | |
274 | ||
53da4939 MF |
275 | if ((osb->s_mount_opt & OCFS2_MOUNT_LOCALFLOCKS) || |
276 | ocfs2_mount_local(osb) || !ocfs2_stack_supports_plocks()) | |
277 | use_plocks = 0; | |
278 | ||
b657c95c JB |
279 | /* |
280 | * These have all been checked by ocfs2_read_inode_block() or set | |
281 | * by ocfs2_mknod_locked(), so a failure is a code bug. | |
282 | */ | |
283 | BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); /* This means that read_inode | |
284 | cannot create a superblock | |
285 | inode today. change if | |
286 | that is needed. */ | |
287 | BUG_ON(!(fe->i_flags & cpu_to_le32(OCFS2_VALID_FL))); | |
288 | BUG_ON(le32_to_cpu(fe->i_fs_generation) != osb->fs_generation); | |
ccd979bd | 289 | |
ccd979bd | 290 | |
8110b073 MF |
291 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); |
292 | OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr); | |
15b1e36b | 293 | OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features); |
8110b073 | 294 | |
ccd979bd MF |
295 | inode->i_version = 1; |
296 | inode->i_generation = le32_to_cpu(fe->i_generation); | |
297 | inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev)); | |
298 | inode->i_mode = le16_to_cpu(fe->i_mode); | |
2c034176 EB |
299 | i_uid_write(inode, le32_to_cpu(fe->i_uid)); |
300 | i_gid_write(inode, le32_to_cpu(fe->i_gid)); | |
ccd979bd MF |
301 | |
302 | /* Fast symlinks will have i_size but no allocated clusters. */ | |
ea022dfb | 303 | if (S_ISLNK(inode->i_mode) && !fe->i_clusters) { |
ccd979bd | 304 | inode->i_blocks = 0; |
ea022dfb AV |
305 | inode->i_mapping->a_ops = &ocfs2_fast_symlink_aops; |
306 | } else { | |
8110b073 | 307 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ea022dfb AV |
308 | inode->i_mapping->a_ops = &ocfs2_aops; |
309 | } | |
ccd979bd MF |
310 | inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime); |
311 | inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec); | |
312 | inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime); | |
313 | inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec); | |
314 | inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime); | |
315 | inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec); | |
316 | ||
317 | if (OCFS2_I(inode)->ip_blkno != le64_to_cpu(fe->i_blkno)) | |
318 | mlog(ML_ERROR, | |
b0697053 MF |
319 | "ip_blkno %llu != i_blkno %llu!\n", |
320 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
1ca1a111 | 321 | (unsigned long long)le64_to_cpu(fe->i_blkno)); |
ccd979bd | 322 | |
bfe86848 | 323 | set_nlink(inode, ocfs2_read_links_count(fe)); |
ccd979bd | 324 | |
64f3b269 TM |
325 | trace_ocfs2_populate_inode(OCFS2_I(inode)->ip_blkno, |
326 | le32_to_cpu(fe->i_flags)); | |
bbbd0eb3 | 327 | if (fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) { |
24c19ef4 | 328 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SYSTEM_FILE; |
bbbd0eb3 JK |
329 | inode->i_flags |= S_NOQUOTA; |
330 | } | |
64f3b269 | 331 | |
ccd979bd MF |
332 | if (fe->i_flags & cpu_to_le32(OCFS2_LOCAL_ALLOC_FL)) { |
333 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP; | |
ccd979bd MF |
334 | } else if (fe->i_flags & cpu_to_le32(OCFS2_BITMAP_FL)) { |
335 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP; | |
1a224ad1 JK |
336 | } else if (fe->i_flags & cpu_to_le32(OCFS2_QUOTA_FL)) { |
337 | inode->i_flags |= S_NOQUOTA; | |
ccd979bd | 338 | } else if (fe->i_flags & cpu_to_le32(OCFS2_SUPER_BLOCK_FL)) { |
ccd979bd MF |
339 | /* we can't actually hit this as read_inode can't |
340 | * handle superblocks today ;-) */ | |
341 | BUG(); | |
342 | } | |
343 | ||
344 | switch (inode->i_mode & S_IFMT) { | |
345 | case S_IFREG: | |
53da4939 MF |
346 | if (use_plocks) |
347 | inode->i_fop = &ocfs2_fops; | |
348 | else | |
349 | inode->i_fop = &ocfs2_fops_no_plocks; | |
ccd979bd MF |
350 | inode->i_op = &ocfs2_file_iops; |
351 | i_size_write(inode, le64_to_cpu(fe->i_size)); | |
352 | break; | |
353 | case S_IFDIR: | |
354 | inode->i_op = &ocfs2_dir_iops; | |
53da4939 MF |
355 | if (use_plocks) |
356 | inode->i_fop = &ocfs2_dops; | |
357 | else | |
358 | inode->i_fop = &ocfs2_dops_no_plocks; | |
ccd979bd | 359 | i_size_write(inode, le64_to_cpu(fe->i_size)); |
5e98d492 | 360 | OCFS2_I(inode)->ip_dir_lock_gen = 1; |
ccd979bd MF |
361 | break; |
362 | case S_IFLNK: | |
ea022dfb | 363 | inode->i_op = &ocfs2_symlink_inode_operations; |
ccd979bd MF |
364 | i_size_write(inode, le64_to_cpu(fe->i_size)); |
365 | break; | |
366 | default: | |
367 | inode->i_op = &ocfs2_special_file_iops; | |
368 | init_special_inode(inode, inode->i_mode, | |
369 | inode->i_rdev); | |
370 | break; | |
371 | } | |
372 | ||
24c19ef4 MF |
373 | if (create_ino) { |
374 | inode->i_ino = ino_from_blkno(inode->i_sb, | |
375 | le64_to_cpu(fe->i_blkno)); | |
376 | ||
377 | /* | |
378 | * If we ever want to create system files from kernel, | |
379 | * the generation argument to | |
380 | * ocfs2_inode_lock_res_init() will have to change. | |
381 | */ | |
1ca1a111 | 382 | BUG_ON(le32_to_cpu(fe->i_flags) & OCFS2_SYSTEM_FL); |
24c19ef4 | 383 | |
e63aecb6 | 384 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_inode_lockres, |
24c19ef4 | 385 | OCFS2_LOCK_TYPE_META, 0, inode); |
50008630 TY |
386 | |
387 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres, | |
388 | OCFS2_LOCK_TYPE_OPEN, 0, inode); | |
24c19ef4 MF |
389 | } |
390 | ||
ccd979bd | 391 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_rw_lockres, |
24c19ef4 MF |
392 | OCFS2_LOCK_TYPE_RW, inode->i_generation, |
393 | inode); | |
394 | ||
ca4d147e | 395 | ocfs2_set_inode_flags(inode); |
ca4d147e | 396 | |
13821151 TM |
397 | OCFS2_I(inode)->ip_last_used_slot = 0; |
398 | OCFS2_I(inode)->ip_last_used_group = 0; | |
e3b4a97d MF |
399 | |
400 | if (S_ISDIR(inode->i_mode)) | |
401 | ocfs2_resv_set_type(&OCFS2_I(inode)->ip_la_data_resv, | |
402 | OCFS2_RESV_FLAG_DIR); | |
ccd979bd MF |
403 | } |
404 | ||
405 | static int ocfs2_read_locked_inode(struct inode *inode, | |
406 | struct ocfs2_find_inode_args *args) | |
407 | { | |
408 | struct super_block *sb; | |
409 | struct ocfs2_super *osb; | |
410 | struct ocfs2_dinode *fe; | |
411 | struct buffer_head *bh = NULL; | |
24c19ef4 MF |
412 | int status, can_lock; |
413 | u32 generation = 0; | |
ccd979bd | 414 | |
ccd979bd | 415 | status = -EINVAL; |
ccd979bd MF |
416 | sb = inode->i_sb; |
417 | osb = OCFS2_SB(sb); | |
418 | ||
24c19ef4 MF |
419 | /* |
420 | * To improve performance of cold-cache inode stats, we take | |
421 | * the cluster lock here if possible. | |
422 | * | |
423 | * Generally, OCFS2 never trusts the contents of an inode | |
424 | * unless it's holding a cluster lock, so taking it here isn't | |
425 | * a correctness issue as much as it is a performance | |
426 | * improvement. | |
427 | * | |
428 | * There are three times when taking the lock is not a good idea: | |
429 | * | |
430 | * 1) During startup, before we have initialized the DLM. | |
431 | * | |
432 | * 2) If we are reading certain system files which never get | |
433 | * cluster locks (local alloc, truncate log). | |
434 | * | |
435 | * 3) If the process doing the iget() is responsible for | |
436 | * orphan dir recovery. We're holding the orphan dir lock and | |
437 | * can get into a deadlock with another process on another | |
438 | * node in ->delete_inode(). | |
439 | * | |
440 | * #1 and #2 can be simply solved by never taking the lock | |
441 | * here for system files (which are the only type we read | |
442 | * during mount). It's a heavier approach, but our main | |
b595076a | 443 | * concern is user-accessible files anyway. |
24c19ef4 MF |
444 | * |
445 | * #3 works itself out because we'll eventually take the | |
446 | * cluster lock before trusting anything anyway. | |
447 | */ | |
448 | can_lock = !(args->fi_flags & OCFS2_FI_FLAG_SYSFILE) | |
50008630 | 449 | && !(args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY) |
c271c5c2 | 450 | && !ocfs2_mount_local(osb); |
24c19ef4 | 451 | |
64f3b269 TM |
452 | trace_ocfs2_read_locked_inode( |
453 | (unsigned long long)OCFS2_I(inode)->ip_blkno, can_lock); | |
454 | ||
24c19ef4 MF |
455 | /* |
456 | * To maintain backwards compatibility with older versions of | |
457 | * ocfs2-tools, we still store the generation value for system | |
458 | * files. The only ones that actually matter to userspace are | |
459 | * the journals, but it's easier and inexpensive to just flag | |
460 | * all system files similarly. | |
461 | */ | |
462 | if (args->fi_flags & OCFS2_FI_FLAG_SYSFILE) | |
463 | generation = osb->fs_generation; | |
464 | ||
e63aecb6 | 465 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_inode_lockres, |
24c19ef4 MF |
466 | OCFS2_LOCK_TYPE_META, |
467 | generation, inode); | |
468 | ||
50008630 TY |
469 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres, |
470 | OCFS2_LOCK_TYPE_OPEN, | |
471 | 0, inode); | |
472 | ||
24c19ef4 | 473 | if (can_lock) { |
50008630 TY |
474 | status = ocfs2_open_lock(inode); |
475 | if (status) { | |
476 | make_bad_inode(inode); | |
477 | mlog_errno(status); | |
478 | return status; | |
479 | } | |
e63aecb6 | 480 | status = ocfs2_inode_lock(inode, NULL, 0); |
24c19ef4 MF |
481 | if (status) { |
482 | make_bad_inode(inode); | |
483 | mlog_errno(status); | |
484 | return status; | |
485 | } | |
ccd979bd MF |
486 | } |
487 | ||
50008630 TY |
488 | if (args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY) { |
489 | status = ocfs2_try_open_lock(inode, 0); | |
490 | if (status) { | |
2bd63216 | 491 | make_bad_inode(inode); |
50008630 TY |
492 | return status; |
493 | } | |
494 | } | |
495 | ||
b657c95c JB |
496 | if (can_lock) { |
497 | status = ocfs2_read_inode_block_full(inode, &bh, | |
498 | OCFS2_BH_IGNORE_CACHE); | |
499 | } else { | |
da1e9098 | 500 | status = ocfs2_read_blocks_sync(osb, args->fi_blkno, 1, &bh); |
f5ce5a08 SM |
501 | /* |
502 | * If buffer is in jbd, then its checksum may not have been | |
503 | * computed as yet. | |
504 | */ | |
505 | if (!status && !buffer_jbd(bh)) | |
b657c95c JB |
506 | status = ocfs2_validate_inode_block(osb->sb, bh); |
507 | } | |
ccd979bd MF |
508 | if (status < 0) { |
509 | mlog_errno(status); | |
ccd979bd MF |
510 | goto bail; |
511 | } | |
512 | ||
24c19ef4 | 513 | status = -EINVAL; |
ccd979bd | 514 | fe = (struct ocfs2_dinode *) bh->b_data; |
ccd979bd | 515 | |
24c19ef4 MF |
516 | /* |
517 | * This is a code bug. Right now the caller needs to | |
518 | * understand whether it is asking for a system file inode or | |
519 | * not so the proper lock names can be built. | |
520 | */ | |
521 | mlog_bug_on_msg(!!(fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) != | |
522 | !!(args->fi_flags & OCFS2_FI_FLAG_SYSFILE), | |
523 | "Inode %llu: system file state is ambigous\n", | |
524 | (unsigned long long)args->fi_blkno); | |
ccd979bd MF |
525 | |
526 | if (S_ISCHR(le16_to_cpu(fe->i_mode)) || | |
527 | S_ISBLK(le16_to_cpu(fe->i_mode))) | |
b657c95c | 528 | inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev)); |
ccd979bd | 529 | |
b657c95c | 530 | ocfs2_populate_inode(inode, fe, 0); |
ccd979bd MF |
531 | |
532 | BUG_ON(args->fi_blkno != le64_to_cpu(fe->i_blkno)); | |
533 | ||
ccd979bd MF |
534 | status = 0; |
535 | ||
536 | bail: | |
24c19ef4 | 537 | if (can_lock) |
e63aecb6 | 538 | ocfs2_inode_unlock(inode, 0); |
24c19ef4 MF |
539 | |
540 | if (status < 0) | |
541 | make_bad_inode(inode); | |
542 | ||
4a635a11 | 543 | brelse(bh); |
ccd979bd | 544 | |
ccd979bd MF |
545 | return status; |
546 | } | |
547 | ||
548 | void ocfs2_sync_blockdev(struct super_block *sb) | |
549 | { | |
550 | sync_blockdev(sb->s_bdev); | |
551 | } | |
552 | ||
553 | static int ocfs2_truncate_for_delete(struct ocfs2_super *osb, | |
554 | struct inode *inode, | |
555 | struct buffer_head *fe_bh) | |
556 | { | |
557 | int status = 0; | |
ccd979bd | 558 | struct ocfs2_dinode *fe; |
60b11392 | 559 | handle_t *handle = NULL; |
ccd979bd | 560 | |
ccd979bd MF |
561 | fe = (struct ocfs2_dinode *) fe_bh->b_data; |
562 | ||
1afc32b9 MF |
563 | /* |
564 | * This check will also skip truncate of inodes with inline | |
565 | * data and fast symlinks. | |
566 | */ | |
3a0782d0 | 567 | if (fe->i_clusters) { |
2b4e30fb JB |
568 | if (ocfs2_should_order_data(inode)) |
569 | ocfs2_begin_ordered_truncate(inode, 0); | |
570 | ||
60b11392 MF |
571 | handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); |
572 | if (IS_ERR(handle)) { | |
573 | status = PTR_ERR(handle); | |
0350cb07 | 574 | handle = NULL; |
60b11392 MF |
575 | mlog_errno(status); |
576 | goto out; | |
577 | } | |
578 | ||
0cf2f763 JB |
579 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), |
580 | fe_bh, | |
13723d00 | 581 | OCFS2_JOURNAL_ACCESS_WRITE); |
60b11392 MF |
582 | if (status < 0) { |
583 | mlog_errno(status); | |
584 | goto out; | |
585 | } | |
586 | ||
587 | i_size_write(inode, 0); | |
588 | ||
589 | status = ocfs2_mark_inode_dirty(handle, inode, fe_bh); | |
590 | if (status < 0) { | |
591 | mlog_errno(status); | |
592 | goto out; | |
593 | } | |
594 | ||
595 | ocfs2_commit_trans(osb, handle); | |
596 | handle = NULL; | |
597 | ||
78f94673 | 598 | status = ocfs2_commit_truncate(osb, inode, fe_bh); |
3a0782d0 MF |
599 | if (status < 0) { |
600 | mlog_errno(status); | |
601 | goto out; | |
602 | } | |
ccd979bd | 603 | } |
ccd979bd | 604 | |
60b11392 MF |
605 | out: |
606 | if (handle) | |
607 | ocfs2_commit_trans(osb, handle); | |
ccd979bd MF |
608 | return status; |
609 | } | |
610 | ||
611 | static int ocfs2_remove_inode(struct inode *inode, | |
612 | struct buffer_head *di_bh, | |
613 | struct inode *orphan_dir_inode, | |
614 | struct buffer_head *orphan_dir_bh) | |
615 | { | |
616 | int status; | |
617 | struct inode *inode_alloc_inode = NULL; | |
618 | struct buffer_head *inode_alloc_bh = NULL; | |
1fabe148 | 619 | handle_t *handle; |
ccd979bd MF |
620 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
621 | struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data; | |
622 | ||
623 | inode_alloc_inode = | |
624 | ocfs2_get_system_file_inode(osb, INODE_ALLOC_SYSTEM_INODE, | |
625 | le16_to_cpu(di->i_suballoc_slot)); | |
626 | if (!inode_alloc_inode) { | |
62f8b1f0 | 627 | status = -ENOENT; |
ccd979bd MF |
628 | mlog_errno(status); |
629 | goto bail; | |
630 | } | |
631 | ||
1b1dcc1b | 632 | mutex_lock(&inode_alloc_inode->i_mutex); |
e63aecb6 | 633 | status = ocfs2_inode_lock(inode_alloc_inode, &inode_alloc_bh, 1); |
ccd979bd | 634 | if (status < 0) { |
1b1dcc1b | 635 | mutex_unlock(&inode_alloc_inode->i_mutex); |
ccd979bd MF |
636 | |
637 | mlog_errno(status); | |
638 | goto bail; | |
639 | } | |
640 | ||
a90714c1 | 641 | handle = ocfs2_start_trans(osb, OCFS2_DELETE_INODE_CREDITS + |
9b7895ef | 642 | ocfs2_quota_trans_credits(inode->i_sb)); |
ccd979bd MF |
643 | if (IS_ERR(handle)) { |
644 | status = PTR_ERR(handle); | |
645 | mlog_errno(status); | |
646 | goto bail_unlock; | |
647 | } | |
648 | ||
d4cd1871 LD |
649 | if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)) { |
650 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
06ee5c75 | 651 | orphan_dir_bh, false); |
d4cd1871 LD |
652 | if (status < 0) { |
653 | mlog_errno(status); | |
654 | goto bail_commit; | |
655 | } | |
ccd979bd MF |
656 | } |
657 | ||
658 | /* set the inodes dtime */ | |
0cf2f763 | 659 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), di_bh, |
13723d00 | 660 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
661 | if (status < 0) { |
662 | mlog_errno(status); | |
663 | goto bail_commit; | |
664 | } | |
665 | ||
666 | di->i_dtime = cpu_to_le64(CURRENT_TIME.tv_sec); | |
4092d49f | 667 | di->i_flags &= cpu_to_le32(~(OCFS2_VALID_FL | OCFS2_ORPHANED_FL)); |
ec20cec7 | 668 | ocfs2_journal_dirty(handle, di_bh); |
ccd979bd | 669 | |
8cb471e8 | 670 | ocfs2_remove_from_cache(INODE_CACHE(inode), di_bh); |
63936dda | 671 | dquot_free_inode(inode); |
ccd979bd MF |
672 | |
673 | status = ocfs2_free_dinode(handle, inode_alloc_inode, | |
674 | inode_alloc_bh, di); | |
675 | if (status < 0) | |
676 | mlog_errno(status); | |
677 | ||
678 | bail_commit: | |
02dc1af4 | 679 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 680 | bail_unlock: |
e63aecb6 | 681 | ocfs2_inode_unlock(inode_alloc_inode, 1); |
1b1dcc1b | 682 | mutex_unlock(&inode_alloc_inode->i_mutex); |
ccd979bd MF |
683 | brelse(inode_alloc_bh); |
684 | bail: | |
685 | iput(inode_alloc_inode); | |
686 | ||
687 | return status; | |
688 | } | |
689 | ||
2bd63216 | 690 | /* |
b4df6ed8 MF |
691 | * Serialize with orphan dir recovery. If the process doing |
692 | * recovery on this orphan dir does an iget() with the dir | |
693 | * i_mutex held, we'll deadlock here. Instead we detect this | |
694 | * and exit early - recovery will wipe this inode for us. | |
695 | */ | |
696 | static int ocfs2_check_orphan_recovery_state(struct ocfs2_super *osb, | |
697 | int slot) | |
698 | { | |
699 | int ret = 0; | |
700 | ||
701 | spin_lock(&osb->osb_lock); | |
702 | if (ocfs2_node_map_test_bit(osb, &osb->osb_recovering_orphan_dirs, slot)) { | |
b4df6ed8 MF |
703 | ret = -EDEADLK; |
704 | goto out; | |
705 | } | |
706 | /* This signals to the orphan recovery process that it should | |
707 | * wait for us to handle the wipe. */ | |
708 | osb->osb_orphan_wipes[slot]++; | |
709 | out: | |
710 | spin_unlock(&osb->osb_lock); | |
64f3b269 | 711 | trace_ocfs2_check_orphan_recovery_state(slot, ret); |
b4df6ed8 MF |
712 | return ret; |
713 | } | |
714 | ||
715 | static void ocfs2_signal_wipe_completion(struct ocfs2_super *osb, | |
716 | int slot) | |
717 | { | |
718 | spin_lock(&osb->osb_lock); | |
719 | osb->osb_orphan_wipes[slot]--; | |
720 | spin_unlock(&osb->osb_lock); | |
721 | ||
722 | wake_up(&osb->osb_wipe_event); | |
723 | } | |
724 | ||
ccd979bd MF |
725 | static int ocfs2_wipe_inode(struct inode *inode, |
726 | struct buffer_head *di_bh) | |
727 | { | |
d577632e | 728 | int status, orphaned_slot = -1; |
ccd979bd MF |
729 | struct inode *orphan_dir_inode = NULL; |
730 | struct buffer_head *orphan_dir_bh = NULL; | |
731 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
d4cd1871 | 732 | struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data; |
ccd979bd | 733 | |
d4cd1871 LD |
734 | if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)) { |
735 | orphaned_slot = le16_to_cpu(di->i_orphaned_slot); | |
b4df6ed8 | 736 | |
d4cd1871 LD |
737 | status = ocfs2_check_orphan_recovery_state(osb, orphaned_slot); |
738 | if (status) | |
739 | return status; | |
b4df6ed8 | 740 | |
d4cd1871 LD |
741 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, |
742 | ORPHAN_DIR_SYSTEM_INODE, | |
743 | orphaned_slot); | |
744 | if (!orphan_dir_inode) { | |
62f8b1f0 | 745 | status = -ENOENT; |
d4cd1871 LD |
746 | mlog_errno(status); |
747 | goto bail; | |
748 | } | |
ccd979bd | 749 | |
d4cd1871 LD |
750 | /* Lock the orphan dir. The lock will be held for the entire |
751 | * delete_inode operation. We do this now to avoid races with | |
752 | * recovery completion on other nodes. */ | |
753 | mutex_lock(&orphan_dir_inode->i_mutex); | |
754 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); | |
755 | if (status < 0) { | |
756 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
ccd979bd | 757 | |
d4cd1871 LD |
758 | mlog_errno(status); |
759 | goto bail; | |
760 | } | |
ccd979bd MF |
761 | } |
762 | ||
763 | /* we do this while holding the orphan dir lock because we | |
34d024f8 MF |
764 | * don't want recovery being run from another node to try an |
765 | * inode delete underneath us -- this will result in two nodes | |
ccd979bd MF |
766 | * truncating the same file! */ |
767 | status = ocfs2_truncate_for_delete(osb, inode, di_bh); | |
768 | if (status < 0) { | |
769 | mlog_errno(status); | |
770 | goto bail_unlock_dir; | |
771 | } | |
772 | ||
9b7895ef MF |
773 | /* Remove any dir index tree */ |
774 | if (S_ISDIR(inode->i_mode)) { | |
775 | status = ocfs2_dx_dir_truncate(inode, di_bh); | |
776 | if (status) { | |
777 | mlog_errno(status); | |
778 | goto bail_unlock_dir; | |
779 | } | |
780 | } | |
781 | ||
cf1d6c76 TY |
782 | /*Free extended attribute resources associated with this inode.*/ |
783 | status = ocfs2_xattr_remove(inode, di_bh); | |
784 | if (status < 0) { | |
785 | mlog_errno(status); | |
786 | goto bail_unlock_dir; | |
787 | } | |
788 | ||
8b2c0dba TM |
789 | status = ocfs2_remove_refcount_tree(inode, di_bh); |
790 | if (status < 0) { | |
791 | mlog_errno(status); | |
792 | goto bail_unlock_dir; | |
793 | } | |
794 | ||
ccd979bd MF |
795 | status = ocfs2_remove_inode(inode, di_bh, orphan_dir_inode, |
796 | orphan_dir_bh); | |
797 | if (status < 0) | |
798 | mlog_errno(status); | |
799 | ||
800 | bail_unlock_dir: | |
d4cd1871 LD |
801 | if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR) |
802 | return status; | |
803 | ||
e63aecb6 | 804 | ocfs2_inode_unlock(orphan_dir_inode, 1); |
1b1dcc1b | 805 | mutex_unlock(&orphan_dir_inode->i_mutex); |
ccd979bd MF |
806 | brelse(orphan_dir_bh); |
807 | bail: | |
808 | iput(orphan_dir_inode); | |
b4df6ed8 | 809 | ocfs2_signal_wipe_completion(osb, orphaned_slot); |
ccd979bd MF |
810 | |
811 | return status; | |
812 | } | |
813 | ||
814 | /* There is a series of simple checks that should be done before a | |
34d024f8 | 815 | * trylock is even considered. Encapsulate those in this function. */ |
ccd979bd MF |
816 | static int ocfs2_inode_is_valid_to_delete(struct inode *inode) |
817 | { | |
818 | int ret = 0; | |
819 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
820 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
821 | ||
64f3b269 TM |
822 | trace_ocfs2_inode_is_valid_to_delete(current, osb->dc_task, |
823 | (unsigned long long)oi->ip_blkno, | |
824 | oi->ip_flags); | |
825 | ||
ccd979bd MF |
826 | /* We shouldn't be getting here for the root directory |
827 | * inode.. */ | |
828 | if (inode == osb->root_inode) { | |
829 | mlog(ML_ERROR, "Skipping delete of root inode.\n"); | |
830 | goto bail; | |
831 | } | |
832 | ||
bd62ad7a JK |
833 | /* |
834 | * If we're coming from downconvert_thread we can't go into our own | |
835 | * voting [hello, deadlock city!] so we cannot delete the inode. But | |
836 | * since we dropped last inode ref when downconverting dentry lock, | |
837 | * we cannot have the file open and thus the node doing unlink will | |
838 | * take care of deleting the inode. | |
839 | */ | |
64f3b269 | 840 | if (current == osb->dc_task) |
ccd979bd | 841 | goto bail; |
ccd979bd MF |
842 | |
843 | spin_lock(&oi->ip_lock); | |
844 | /* OCFS2 *never* deletes system files. This should technically | |
845 | * never get here as system file inodes should always have a | |
846 | * positive link count. */ | |
847 | if (oi->ip_flags & OCFS2_INODE_SYSTEM_FILE) { | |
b0697053 MF |
848 | mlog(ML_ERROR, "Skipping delete of system file %llu\n", |
849 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
850 | goto bail_unlock; |
851 | } | |
852 | ||
ccd979bd MF |
853 | ret = 1; |
854 | bail_unlock: | |
855 | spin_unlock(&oi->ip_lock); | |
856 | bail: | |
857 | return ret; | |
858 | } | |
859 | ||
860 | /* Query the cluster to determine whether we should wipe an inode from | |
861 | * disk or not. | |
862 | * | |
863 | * Requires the inode to have the cluster lock. */ | |
864 | static int ocfs2_query_inode_wipe(struct inode *inode, | |
865 | struct buffer_head *di_bh, | |
866 | int *wipe) | |
867 | { | |
64f3b269 | 868 | int status = 0, reason = 0; |
ccd979bd MF |
869 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
870 | struct ocfs2_dinode *di; | |
871 | ||
872 | *wipe = 0; | |
873 | ||
64f3b269 TM |
874 | trace_ocfs2_query_inode_wipe_begin((unsigned long long)oi->ip_blkno, |
875 | inode->i_nlink); | |
876 | ||
ccd979bd MF |
877 | /* While we were waiting for the cluster lock in |
878 | * ocfs2_delete_inode, another node might have asked to delete | |
879 | * the inode. Recheck our flags to catch this. */ | |
880 | if (!ocfs2_inode_is_valid_to_delete(inode)) { | |
64f3b269 | 881 | reason = 1; |
ccd979bd MF |
882 | goto bail; |
883 | } | |
884 | ||
885 | /* Now that we have an up to date inode, we can double check | |
886 | * the link count. */ | |
64f3b269 | 887 | if (inode->i_nlink) |
ccd979bd | 888 | goto bail; |
ccd979bd MF |
889 | |
890 | /* Do some basic inode verification... */ | |
891 | di = (struct ocfs2_dinode *) di_bh->b_data; | |
d4cd1871 LD |
892 | if (!(di->i_flags & cpu_to_le32(OCFS2_ORPHANED_FL)) && |
893 | !(oi->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)) { | |
b54c2ca4 TY |
894 | /* |
895 | * Inodes in the orphan dir must have ORPHANED_FL. The only | |
896 | * inodes that come back out of the orphan dir are reflink | |
897 | * targets. A reflink target may be moved out of the orphan | |
898 | * dir between the time we scan the directory and the time we | |
899 | * process it. This would lead to HAS_REFCOUNT_FL being set but | |
900 | * ORPHANED_FL not. | |
901 | */ | |
902 | if (di->i_dyn_features & cpu_to_le16(OCFS2_HAS_REFCOUNT_FL)) { | |
64f3b269 | 903 | reason = 2; |
b54c2ca4 TY |
904 | goto bail; |
905 | } | |
906 | ||
ccd979bd MF |
907 | /* for lack of a better error? */ |
908 | status = -EEXIST; | |
909 | mlog(ML_ERROR, | |
b0697053 | 910 | "Inode %llu (on-disk %llu) not orphaned! " |
ccd979bd | 911 | "Disk flags 0x%x, inode flags 0x%x\n", |
b0697053 | 912 | (unsigned long long)oi->ip_blkno, |
1ca1a111 MF |
913 | (unsigned long long)le64_to_cpu(di->i_blkno), |
914 | le32_to_cpu(di->i_flags), oi->ip_flags); | |
ccd979bd MF |
915 | goto bail; |
916 | } | |
917 | ||
918 | /* has someone already deleted us?! baaad... */ | |
919 | if (di->i_dtime) { | |
920 | status = -EEXIST; | |
921 | mlog_errno(status); | |
922 | goto bail; | |
923 | } | |
924 | ||
6f16bf65 MF |
925 | /* |
926 | * This is how ocfs2 determines whether an inode is still live | |
927 | * within the cluster. Every node takes a shared read lock on | |
928 | * the inode open lock in ocfs2_read_locked_inode(). When we | |
929 | * get to ->delete_inode(), each node tries to convert it's | |
930 | * lock to an exclusive. Trylocks are serialized by the inode | |
25985edc | 931 | * meta data lock. If the upconvert succeeds, we know the inode |
6f16bf65 MF |
932 | * is no longer live and can be deleted. |
933 | * | |
934 | * Though we call this with the meta data lock held, the | |
935 | * trylock keeps us from ABBA deadlock. | |
936 | */ | |
937 | status = ocfs2_try_open_lock(inode, 1); | |
50008630 | 938 | if (status == -EAGAIN) { |
ccd979bd | 939 | status = 0; |
64f3b269 | 940 | reason = 3; |
ccd979bd MF |
941 | goto bail; |
942 | } | |
943 | if (status < 0) { | |
944 | mlog_errno(status); | |
945 | goto bail; | |
946 | } | |
947 | ||
50008630 | 948 | *wipe = 1; |
64f3b269 | 949 | trace_ocfs2_query_inode_wipe_succ(le16_to_cpu(di->i_orphaned_slot)); |
ccd979bd MF |
950 | |
951 | bail: | |
64f3b269 | 952 | trace_ocfs2_query_inode_wipe_end(status, reason); |
ccd979bd MF |
953 | return status; |
954 | } | |
955 | ||
956 | /* Support function for ocfs2_delete_inode. Will help us keep the | |
957 | * inode data in a consistent state for clear_inode. Always truncates | |
958 | * pages, optionally sync's them first. */ | |
959 | static void ocfs2_cleanup_delete_inode(struct inode *inode, | |
960 | int sync_data) | |
961 | { | |
64f3b269 TM |
962 | trace_ocfs2_cleanup_delete_inode( |
963 | (unsigned long long)OCFS2_I(inode)->ip_blkno, sync_data); | |
ccd979bd | 964 | if (sync_data) |
249ec93c | 965 | filemap_write_and_wait(inode->i_mapping); |
91b0abe3 | 966 | truncate_inode_pages_final(&inode->i_data); |
ccd979bd MF |
967 | } |
968 | ||
066d92dc | 969 | static void ocfs2_delete_inode(struct inode *inode) |
ccd979bd MF |
970 | { |
971 | int wipe, status; | |
e4b963f1 | 972 | sigset_t oldset; |
ccd979bd MF |
973 | struct buffer_head *di_bh = NULL; |
974 | ||
64f3b269 TM |
975 | trace_ocfs2_delete_inode(inode->i_ino, |
976 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
977 | is_bad_inode(inode)); | |
ccd979bd | 978 | |
a90714c1 JK |
979 | /* When we fail in read_inode() we mark inode as bad. The second test |
980 | * catches the case when inode allocation fails before allocating | |
981 | * a block for inode. */ | |
64f3b269 | 982 | if (is_bad_inode(inode) || !OCFS2_I(inode)->ip_blkno) |
ccd979bd | 983 | goto bail; |
ccd979bd MF |
984 | |
985 | if (!ocfs2_inode_is_valid_to_delete(inode)) { | |
986 | /* It's probably not necessary to truncate_inode_pages | |
987 | * here but we do it for safety anyway (it will most | |
988 | * likely be a no-op anyway) */ | |
989 | ocfs2_cleanup_delete_inode(inode, 0); | |
990 | goto bail; | |
991 | } | |
992 | ||
bd62ad7a JK |
993 | dquot_initialize(inode); |
994 | ||
ccd979bd MF |
995 | /* We want to block signals in delete_inode as the lock and |
996 | * messaging paths may return us -ERESTARTSYS. Which would | |
997 | * cause us to exit early, resulting in inodes being orphaned | |
998 | * forever. */ | |
e4b963f1 | 999 | ocfs2_block_signals(&oldset); |
ccd979bd | 1000 | |
6ca497a8 | 1001 | /* |
1002 | * Synchronize us against ocfs2_get_dentry. We take this in | |
1003 | * shared mode so that all nodes can still concurrently | |
1004 | * process deletes. | |
1005 | */ | |
1006 | status = ocfs2_nfs_sync_lock(OCFS2_SB(inode->i_sb), 0); | |
1007 | if (status < 0) { | |
1008 | mlog(ML_ERROR, "getting nfs sync lock(PR) failed %d\n", status); | |
1009 | ocfs2_cleanup_delete_inode(inode, 0); | |
1010 | goto bail_unblock; | |
1011 | } | |
ccd979bd MF |
1012 | /* Lock down the inode. This gives us an up to date view of |
1013 | * it's metadata (for verification), and allows us to | |
34d024f8 | 1014 | * serialize delete_inode on multiple nodes. |
ccd979bd MF |
1015 | * |
1016 | * Even though we might be doing a truncate, we don't take the | |
1017 | * allocation lock here as it won't be needed - nobody will | |
1018 | * have the file open. | |
1019 | */ | |
e63aecb6 | 1020 | status = ocfs2_inode_lock(inode, &di_bh, 1); |
ccd979bd MF |
1021 | if (status < 0) { |
1022 | if (status != -ENOENT) | |
1023 | mlog_errno(status); | |
1024 | ocfs2_cleanup_delete_inode(inode, 0); | |
6ca497a8 | 1025 | goto bail_unlock_nfs_sync; |
ccd979bd MF |
1026 | } |
1027 | ||
1028 | /* Query the cluster. This will be the final decision made | |
1029 | * before we go ahead and wipe the inode. */ | |
1030 | status = ocfs2_query_inode_wipe(inode, di_bh, &wipe); | |
1031 | if (!wipe || status < 0) { | |
34d024f8 | 1032 | /* Error and remote inode busy both mean we won't be |
ccd979bd MF |
1033 | * removing the inode, so they take almost the same |
1034 | * path. */ | |
1035 | if (status < 0) | |
1036 | mlog_errno(status); | |
1037 | ||
34d024f8 MF |
1038 | /* Someone in the cluster has disallowed a wipe of |
1039 | * this inode, or it was never completely | |
1040 | * orphaned. Write out the pages and exit now. */ | |
ccd979bd MF |
1041 | ocfs2_cleanup_delete_inode(inode, 1); |
1042 | goto bail_unlock_inode; | |
1043 | } | |
1044 | ||
1045 | ocfs2_cleanup_delete_inode(inode, 0); | |
1046 | ||
1047 | status = ocfs2_wipe_inode(inode, di_bh); | |
1048 | if (status < 0) { | |
b4df6ed8 MF |
1049 | if (status != -EDEADLK) |
1050 | mlog_errno(status); | |
ccd979bd MF |
1051 | goto bail_unlock_inode; |
1052 | } | |
1053 | ||
24c19ef4 MF |
1054 | /* |
1055 | * Mark the inode as successfully deleted. | |
1056 | * | |
1057 | * This is important for ocfs2_clear_inode() as it will check | |
1058 | * this flag and skip any checkpointing work | |
1059 | * | |
1060 | * ocfs2_stuff_meta_lvb() also uses this flag to invalidate | |
1061 | * the LVB for other nodes. | |
1062 | */ | |
ccd979bd MF |
1063 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_DELETED; |
1064 | ||
1065 | bail_unlock_inode: | |
e63aecb6 | 1066 | ocfs2_inode_unlock(inode, 1); |
ccd979bd | 1067 | brelse(di_bh); |
6ca497a8 | 1068 | |
1069 | bail_unlock_nfs_sync: | |
1070 | ocfs2_nfs_sync_unlock(OCFS2_SB(inode->i_sb), 0); | |
1071 | ||
ccd979bd | 1072 | bail_unblock: |
e4b963f1 | 1073 | ocfs2_unblock_signals(&oldset); |
ccd979bd | 1074 | bail: |
c1e8d35e | 1075 | return; |
ccd979bd MF |
1076 | } |
1077 | ||
066d92dc | 1078 | static void ocfs2_clear_inode(struct inode *inode) |
ccd979bd MF |
1079 | { |
1080 | int status; | |
1081 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
84d86f83 | 1082 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
ccd979bd | 1083 | |
dbd5768f | 1084 | clear_inode(inode); |
64f3b269 TM |
1085 | trace_ocfs2_clear_inode((unsigned long long)oi->ip_blkno, |
1086 | inode->i_nlink); | |
ccd979bd MF |
1087 | |
1088 | mlog_bug_on_msg(OCFS2_SB(inode->i_sb) == NULL, | |
1089 | "Inode=%lu\n", inode->i_ino); | |
1090 | ||
9f754758 | 1091 | dquot_drop(inode); |
257ba15c | 1092 | |
34d024f8 MF |
1093 | /* To preven remote deletes we hold open lock before, now it |
1094 | * is time to unlock PR and EX open locks. */ | |
50008630 TY |
1095 | ocfs2_open_unlock(inode); |
1096 | ||
ccd979bd | 1097 | /* Do these before all the other work so that we don't bounce |
34d024f8 | 1098 | * the downconvert thread while waiting to destroy the locks. */ |
84d86f83 JK |
1099 | ocfs2_mark_lockres_freeing(osb, &oi->ip_rw_lockres); |
1100 | ocfs2_mark_lockres_freeing(osb, &oi->ip_inode_lockres); | |
1101 | ocfs2_mark_lockres_freeing(osb, &oi->ip_open_lockres); | |
ccd979bd | 1102 | |
4fe370af MF |
1103 | ocfs2_resv_discard(&OCFS2_SB(inode->i_sb)->osb_la_resmap, |
1104 | &oi->ip_la_data_resv); | |
1105 | ocfs2_resv_init_once(&oi->ip_la_data_resv); | |
1106 | ||
ccd979bd MF |
1107 | /* We very well may get a clear_inode before all an inodes |
1108 | * metadata has hit disk. Of course, we can't drop any cluster | |
1109 | * locks until the journal has finished with it. The only | |
1110 | * exception here are successfully wiped inodes - their | |
1111 | * metadata can now be considered to be part of the system | |
1112 | * inodes from which it came. */ | |
1113 | if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED)) | |
1114 | ocfs2_checkpoint_inode(inode); | |
1115 | ||
1116 | mlog_bug_on_msg(!list_empty(&oi->ip_io_markers), | |
b0697053 MF |
1117 | "Clear inode of %llu, inode has io markers\n", |
1118 | (unsigned long long)oi->ip_blkno); | |
ccd979bd | 1119 | |
83418978 MF |
1120 | ocfs2_extent_map_trunc(inode, 0); |
1121 | ||
ccd979bd MF |
1122 | status = ocfs2_drop_inode_locks(inode); |
1123 | if (status < 0) | |
1124 | mlog_errno(status); | |
1125 | ||
1126 | ocfs2_lock_res_free(&oi->ip_rw_lockres); | |
e63aecb6 | 1127 | ocfs2_lock_res_free(&oi->ip_inode_lockres); |
50008630 | 1128 | ocfs2_lock_res_free(&oi->ip_open_lockres); |
ccd979bd | 1129 | |
66fb345d | 1130 | ocfs2_metadata_cache_exit(INODE_CACHE(inode)); |
ccd979bd | 1131 | |
8cb471e8 | 1132 | mlog_bug_on_msg(INODE_CACHE(inode)->ci_num_cached, |
b0697053 | 1133 | "Clear inode of %llu, inode has %u cache items\n", |
8cb471e8 JB |
1134 | (unsigned long long)oi->ip_blkno, |
1135 | INODE_CACHE(inode)->ci_num_cached); | |
ccd979bd | 1136 | |
8cb471e8 | 1137 | mlog_bug_on_msg(!(INODE_CACHE(inode)->ci_flags & OCFS2_CACHE_FL_INLINE), |
b0697053 MF |
1138 | "Clear inode of %llu, inode has a bad flag\n", |
1139 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
1140 | |
1141 | mlog_bug_on_msg(spin_is_locked(&oi->ip_lock), | |
b0697053 MF |
1142 | "Clear inode of %llu, inode is locked\n", |
1143 | (unsigned long long)oi->ip_blkno); | |
ccd979bd | 1144 | |
251b6ecc | 1145 | mlog_bug_on_msg(!mutex_trylock(&oi->ip_io_mutex), |
b0697053 MF |
1146 | "Clear inode of %llu, io_mutex is locked\n", |
1147 | (unsigned long long)oi->ip_blkno); | |
251b6ecc | 1148 | mutex_unlock(&oi->ip_io_mutex); |
ccd979bd MF |
1149 | |
1150 | /* | |
1151 | * down_trylock() returns 0, down_write_trylock() returns 1 | |
1152 | * kernel 1, world 0 | |
1153 | */ | |
1154 | mlog_bug_on_msg(!down_write_trylock(&oi->ip_alloc_sem), | |
b0697053 MF |
1155 | "Clear inode of %llu, alloc_sem is locked\n", |
1156 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
1157 | up_write(&oi->ip_alloc_sem); |
1158 | ||
1159 | mlog_bug_on_msg(oi->ip_open_count, | |
b0697053 MF |
1160 | "Clear inode of %llu has open count %d\n", |
1161 | (unsigned long long)oi->ip_blkno, oi->ip_open_count); | |
ccd979bd MF |
1162 | |
1163 | /* Clear all other flags. */ | |
47460d65 | 1164 | oi->ip_flags = 0; |
ccd979bd MF |
1165 | oi->ip_dir_start_lookup = 0; |
1166 | oi->ip_blkno = 0ULL; | |
ae0dff68 SM |
1167 | |
1168 | /* | |
1169 | * ip_jinode is used to track txns against this inode. We ensure that | |
1170 | * the journal is flushed before journal shutdown. Thus it is safe to | |
1171 | * have inodes get cleaned up after journal shutdown. | |
1172 | */ | |
2b4e30fb JB |
1173 | jbd2_journal_release_jbd_inode(OCFS2_SB(inode->i_sb)->journal->j_journal, |
1174 | &oi->ip_jinode); | |
ccd979bd MF |
1175 | } |
1176 | ||
066d92dc AV |
1177 | void ocfs2_evict_inode(struct inode *inode) |
1178 | { | |
1179 | if (!inode->i_nlink || | |
1180 | (OCFS2_I(inode)->ip_flags & OCFS2_INODE_MAYBE_ORPHANED)) { | |
1181 | ocfs2_delete_inode(inode); | |
1182 | } else { | |
91b0abe3 | 1183 | truncate_inode_pages_final(&inode->i_data); |
066d92dc AV |
1184 | } |
1185 | ocfs2_clear_inode(inode); | |
1186 | } | |
1187 | ||
ccd979bd MF |
1188 | /* Called under inode_lock, with no more references on the |
1189 | * struct inode, so it's safe here to check the flags field | |
1190 | * and to manipulate i_nlink without any other locks. */ | |
45321ac5 | 1191 | int ocfs2_drop_inode(struct inode *inode) |
ccd979bd MF |
1192 | { |
1193 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
45321ac5 | 1194 | int res; |
ccd979bd | 1195 | |
64f3b269 TM |
1196 | trace_ocfs2_drop_inode((unsigned long long)oi->ip_blkno, |
1197 | inode->i_nlink, oi->ip_flags); | |
ccd979bd | 1198 | |
379dfe9d | 1199 | if (oi->ip_flags & OCFS2_INODE_MAYBE_ORPHANED) |
45321ac5 | 1200 | res = 1; |
379dfe9d | 1201 | else |
45321ac5 | 1202 | res = generic_drop_inode(inode); |
ccd979bd | 1203 | |
45321ac5 | 1204 | return res; |
ccd979bd MF |
1205 | } |
1206 | ||
ccd979bd MF |
1207 | /* |
1208 | * This is called from our getattr. | |
1209 | */ | |
1210 | int ocfs2_inode_revalidate(struct dentry *dentry) | |
1211 | { | |
2b0143b5 | 1212 | struct inode *inode = d_inode(dentry); |
ccd979bd MF |
1213 | int status = 0; |
1214 | ||
64f3b269 TM |
1215 | trace_ocfs2_inode_revalidate(inode, |
1216 | inode ? (unsigned long long)OCFS2_I(inode)->ip_blkno : 0ULL, | |
1217 | inode ? (unsigned long long)OCFS2_I(inode)->ip_flags : 0); | |
ccd979bd MF |
1218 | |
1219 | if (!inode) { | |
ccd979bd MF |
1220 | status = -ENOENT; |
1221 | goto bail; | |
1222 | } | |
1223 | ||
1224 | spin_lock(&OCFS2_I(inode)->ip_lock); | |
1225 | if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED) { | |
1226 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
ccd979bd MF |
1227 | status = -ENOENT; |
1228 | goto bail; | |
1229 | } | |
1230 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
1231 | ||
e63aecb6 | 1232 | /* Let ocfs2_inode_lock do the work of updating our struct |
ccd979bd | 1233 | * inode for us. */ |
e63aecb6 | 1234 | status = ocfs2_inode_lock(inode, NULL, 0); |
ccd979bd MF |
1235 | if (status < 0) { |
1236 | if (status != -ENOENT) | |
1237 | mlog_errno(status); | |
1238 | goto bail; | |
1239 | } | |
e63aecb6 | 1240 | ocfs2_inode_unlock(inode, 0); |
ccd979bd | 1241 | bail: |
ccd979bd MF |
1242 | return status; |
1243 | } | |
1244 | ||
1245 | /* | |
1246 | * Updates a disk inode from a | |
1247 | * struct inode. | |
1248 | * Only takes ip_lock. | |
1249 | */ | |
1fabe148 | 1250 | int ocfs2_mark_inode_dirty(handle_t *handle, |
ccd979bd MF |
1251 | struct inode *inode, |
1252 | struct buffer_head *bh) | |
1253 | { | |
1254 | int status; | |
1255 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) bh->b_data; | |
1256 | ||
64f3b269 | 1257 | trace_ocfs2_mark_inode_dirty((unsigned long long)OCFS2_I(inode)->ip_blkno); |
ccd979bd | 1258 | |
0cf2f763 | 1259 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), bh, |
13723d00 | 1260 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1261 | if (status < 0) { |
1262 | mlog_errno(status); | |
1263 | goto leave; | |
1264 | } | |
1265 | ||
1266 | spin_lock(&OCFS2_I(inode)->ip_lock); | |
1267 | fe->i_clusters = cpu_to_le32(OCFS2_I(inode)->ip_clusters); | |
6e4b0d56 | 1268 | ocfs2_get_inode_flags(OCFS2_I(inode)); |
ca4d147e | 1269 | fe->i_attr = cpu_to_le32(OCFS2_I(inode)->ip_attr); |
15b1e36b | 1270 | fe->i_dyn_features = cpu_to_le16(OCFS2_I(inode)->ip_dyn_features); |
ccd979bd MF |
1271 | spin_unlock(&OCFS2_I(inode)->ip_lock); |
1272 | ||
1273 | fe->i_size = cpu_to_le64(i_size_read(inode)); | |
198a1ca3 | 1274 | ocfs2_set_links_count(fe, inode->i_nlink); |
2c034176 EB |
1275 | fe->i_uid = cpu_to_le32(i_uid_read(inode)); |
1276 | fe->i_gid = cpu_to_le32(i_gid_read(inode)); | |
ccd979bd MF |
1277 | fe->i_mode = cpu_to_le16(inode->i_mode); |
1278 | fe->i_atime = cpu_to_le64(inode->i_atime.tv_sec); | |
1279 | fe->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); | |
1280 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); | |
1281 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
1282 | fe->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec); | |
1283 | fe->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); | |
1284 | ||
ec20cec7 | 1285 | ocfs2_journal_dirty(handle, bh); |
2931cdcb | 1286 | ocfs2_update_inode_fsync_trans(handle, inode, 1); |
ccd979bd | 1287 | leave: |
ccd979bd MF |
1288 | return status; |
1289 | } | |
1290 | ||
1291 | /* | |
1292 | * | |
1293 | * Updates a struct inode from a disk inode. | |
1294 | * does no i/o, only takes ip_lock. | |
1295 | */ | |
1296 | void ocfs2_refresh_inode(struct inode *inode, | |
1297 | struct ocfs2_dinode *fe) | |
1298 | { | |
ccd979bd MF |
1299 | spin_lock(&OCFS2_I(inode)->ip_lock); |
1300 | ||
1301 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); | |
ca4d147e | 1302 | OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr); |
15b1e36b | 1303 | OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features); |
ca4d147e | 1304 | ocfs2_set_inode_flags(inode); |
ccd979bd | 1305 | i_size_write(inode, le64_to_cpu(fe->i_size)); |
bfe86848 | 1306 | set_nlink(inode, ocfs2_read_links_count(fe)); |
2c034176 EB |
1307 | i_uid_write(inode, le32_to_cpu(fe->i_uid)); |
1308 | i_gid_write(inode, le32_to_cpu(fe->i_gid)); | |
ccd979bd | 1309 | inode->i_mode = le16_to_cpu(fe->i_mode); |
ccd979bd MF |
1310 | if (S_ISLNK(inode->i_mode) && le32_to_cpu(fe->i_clusters) == 0) |
1311 | inode->i_blocks = 0; | |
1312 | else | |
8110b073 | 1313 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd MF |
1314 | inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime); |
1315 | inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec); | |
1316 | inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime); | |
1317 | inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec); | |
1318 | inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime); | |
1319 | inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec); | |
1320 | ||
1321 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
1322 | } | |
b657c95c JB |
1323 | |
1324 | int ocfs2_validate_inode_block(struct super_block *sb, | |
1325 | struct buffer_head *bh) | |
1326 | { | |
d6b32bbb | 1327 | int rc; |
b657c95c JB |
1328 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data; |
1329 | ||
64f3b269 | 1330 | trace_ocfs2_validate_inode_block((unsigned long long)bh->b_blocknr); |
970e4936 | 1331 | |
b657c95c JB |
1332 | BUG_ON(!buffer_uptodate(bh)); |
1333 | ||
d6b32bbb JB |
1334 | /* |
1335 | * If the ecc fails, we return the error but otherwise | |
1336 | * leave the filesystem running. We know any error is | |
1337 | * local to this block. | |
1338 | */ | |
1339 | rc = ocfs2_validate_meta_ecc(sb, bh->b_data, &di->i_check); | |
13723d00 JB |
1340 | if (rc) { |
1341 | mlog(ML_ERROR, "Checksum failed for dinode %llu\n", | |
1342 | (unsigned long long)bh->b_blocknr); | |
d6b32bbb | 1343 | goto bail; |
13723d00 | 1344 | } |
d6b32bbb JB |
1345 | |
1346 | /* | |
1347 | * Errors after here are fatal. | |
1348 | */ | |
1349 | ||
1350 | rc = -EINVAL; | |
1351 | ||
b657c95c JB |
1352 | if (!OCFS2_IS_VALID_DINODE(di)) { |
1353 | ocfs2_error(sb, "Invalid dinode #%llu: signature = %.*s\n", | |
1354 | (unsigned long long)bh->b_blocknr, 7, | |
1355 | di->i_signature); | |
1356 | goto bail; | |
1357 | } | |
1358 | ||
1359 | if (le64_to_cpu(di->i_blkno) != bh->b_blocknr) { | |
1360 | ocfs2_error(sb, "Invalid dinode #%llu: i_blkno is %llu\n", | |
1361 | (unsigned long long)bh->b_blocknr, | |
1362 | (unsigned long long)le64_to_cpu(di->i_blkno)); | |
1363 | goto bail; | |
1364 | } | |
1365 | ||
1366 | if (!(di->i_flags & cpu_to_le32(OCFS2_VALID_FL))) { | |
1367 | ocfs2_error(sb, | |
1368 | "Invalid dinode #%llu: OCFS2_VALID_FL not set\n", | |
1369 | (unsigned long long)bh->b_blocknr); | |
1370 | goto bail; | |
1371 | } | |
1372 | ||
1373 | if (le32_to_cpu(di->i_fs_generation) != | |
1374 | OCFS2_SB(sb)->fs_generation) { | |
1375 | ocfs2_error(sb, | |
1376 | "Invalid dinode #%llu: fs_generation is %u\n", | |
1377 | (unsigned long long)bh->b_blocknr, | |
1378 | le32_to_cpu(di->i_fs_generation)); | |
1379 | goto bail; | |
1380 | } | |
1381 | ||
1382 | rc = 0; | |
1383 | ||
1384 | bail: | |
1385 | return rc; | |
1386 | } | |
1387 | ||
1388 | int ocfs2_read_inode_block_full(struct inode *inode, struct buffer_head **bh, | |
1389 | int flags) | |
1390 | { | |
1391 | int rc; | |
1392 | struct buffer_head *tmp = *bh; | |
1393 | ||
8cb471e8 JB |
1394 | rc = ocfs2_read_blocks(INODE_CACHE(inode), OCFS2_I(inode)->ip_blkno, |
1395 | 1, &tmp, flags, ocfs2_validate_inode_block); | |
b657c95c JB |
1396 | |
1397 | /* If ocfs2_read_blocks() got us a new bh, pass it up. */ | |
970e4936 | 1398 | if (!rc && !*bh) |
b657c95c JB |
1399 | *bh = tmp; |
1400 | ||
b657c95c JB |
1401 | return rc; |
1402 | } | |
1403 | ||
1404 | int ocfs2_read_inode_block(struct inode *inode, struct buffer_head **bh) | |
1405 | { | |
1406 | return ocfs2_read_inode_block_full(inode, bh, 0); | |
1407 | } | |
6e5a3d75 | 1408 | |
6e5a3d75 JB |
1409 | |
1410 | static u64 ocfs2_inode_cache_owner(struct ocfs2_caching_info *ci) | |
1411 | { | |
1412 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1413 | ||
1414 | return oi->ip_blkno; | |
1415 | } | |
1416 | ||
8cb471e8 JB |
1417 | static struct super_block *ocfs2_inode_cache_get_super(struct ocfs2_caching_info *ci) |
1418 | { | |
1419 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1420 | ||
1421 | return oi->vfs_inode.i_sb; | |
1422 | } | |
1423 | ||
6e5a3d75 JB |
1424 | static void ocfs2_inode_cache_lock(struct ocfs2_caching_info *ci) |
1425 | { | |
1426 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1427 | ||
1428 | spin_lock(&oi->ip_lock); | |
1429 | } | |
1430 | ||
1431 | static void ocfs2_inode_cache_unlock(struct ocfs2_caching_info *ci) | |
1432 | { | |
1433 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1434 | ||
1435 | spin_unlock(&oi->ip_lock); | |
1436 | } | |
1437 | ||
1438 | static void ocfs2_inode_cache_io_lock(struct ocfs2_caching_info *ci) | |
1439 | { | |
1440 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1441 | ||
1442 | mutex_lock(&oi->ip_io_mutex); | |
1443 | } | |
1444 | ||
1445 | static void ocfs2_inode_cache_io_unlock(struct ocfs2_caching_info *ci) | |
1446 | { | |
1447 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1448 | ||
1449 | mutex_unlock(&oi->ip_io_mutex); | |
1450 | } | |
1451 | ||
1452 | const struct ocfs2_caching_operations ocfs2_inode_caching_ops = { | |
1453 | .co_owner = ocfs2_inode_cache_owner, | |
8cb471e8 | 1454 | .co_get_super = ocfs2_inode_cache_get_super, |
6e5a3d75 JB |
1455 | .co_cache_lock = ocfs2_inode_cache_lock, |
1456 | .co_cache_unlock = ocfs2_inode_cache_unlock, | |
1457 | .co_io_lock = ocfs2_inode_cache_io_lock, | |
1458 | .co_io_unlock = ocfs2_inode_cache_io_unlock, | |
1459 | }; | |
1460 |