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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 | ||
ccd979bd MF |
543 | if (args && bh) |
544 | brelse(bh); | |
545 | ||
ccd979bd MF |
546 | return status; |
547 | } | |
548 | ||
549 | void ocfs2_sync_blockdev(struct super_block *sb) | |
550 | { | |
551 | sync_blockdev(sb->s_bdev); | |
552 | } | |
553 | ||
554 | static int ocfs2_truncate_for_delete(struct ocfs2_super *osb, | |
555 | struct inode *inode, | |
556 | struct buffer_head *fe_bh) | |
557 | { | |
558 | int status = 0; | |
ccd979bd | 559 | struct ocfs2_dinode *fe; |
60b11392 | 560 | handle_t *handle = NULL; |
ccd979bd | 561 | |
ccd979bd MF |
562 | fe = (struct ocfs2_dinode *) fe_bh->b_data; |
563 | ||
1afc32b9 MF |
564 | /* |
565 | * This check will also skip truncate of inodes with inline | |
566 | * data and fast symlinks. | |
567 | */ | |
3a0782d0 | 568 | if (fe->i_clusters) { |
2b4e30fb JB |
569 | if (ocfs2_should_order_data(inode)) |
570 | ocfs2_begin_ordered_truncate(inode, 0); | |
571 | ||
60b11392 MF |
572 | handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); |
573 | if (IS_ERR(handle)) { | |
574 | status = PTR_ERR(handle); | |
0350cb07 | 575 | handle = NULL; |
60b11392 MF |
576 | mlog_errno(status); |
577 | goto out; | |
578 | } | |
579 | ||
0cf2f763 JB |
580 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), |
581 | fe_bh, | |
13723d00 | 582 | OCFS2_JOURNAL_ACCESS_WRITE); |
60b11392 MF |
583 | if (status < 0) { |
584 | mlog_errno(status); | |
585 | goto out; | |
586 | } | |
587 | ||
588 | i_size_write(inode, 0); | |
589 | ||
590 | status = ocfs2_mark_inode_dirty(handle, inode, fe_bh); | |
591 | if (status < 0) { | |
592 | mlog_errno(status); | |
593 | goto out; | |
594 | } | |
595 | ||
596 | ocfs2_commit_trans(osb, handle); | |
597 | handle = NULL; | |
598 | ||
78f94673 | 599 | status = ocfs2_commit_truncate(osb, inode, fe_bh); |
3a0782d0 MF |
600 | if (status < 0) { |
601 | mlog_errno(status); | |
602 | goto out; | |
603 | } | |
ccd979bd | 604 | } |
ccd979bd | 605 | |
60b11392 MF |
606 | out: |
607 | if (handle) | |
608 | ocfs2_commit_trans(osb, handle); | |
ccd979bd MF |
609 | return status; |
610 | } | |
611 | ||
612 | static int ocfs2_remove_inode(struct inode *inode, | |
613 | struct buffer_head *di_bh, | |
614 | struct inode *orphan_dir_inode, | |
615 | struct buffer_head *orphan_dir_bh) | |
616 | { | |
617 | int status; | |
618 | struct inode *inode_alloc_inode = NULL; | |
619 | struct buffer_head *inode_alloc_bh = NULL; | |
1fabe148 | 620 | handle_t *handle; |
ccd979bd MF |
621 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
622 | struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data; | |
623 | ||
624 | inode_alloc_inode = | |
625 | ocfs2_get_system_file_inode(osb, INODE_ALLOC_SYSTEM_INODE, | |
626 | le16_to_cpu(di->i_suballoc_slot)); | |
627 | if (!inode_alloc_inode) { | |
628 | status = -EEXIST; | |
629 | mlog_errno(status); | |
630 | goto bail; | |
631 | } | |
632 | ||
1b1dcc1b | 633 | mutex_lock(&inode_alloc_inode->i_mutex); |
e63aecb6 | 634 | status = ocfs2_inode_lock(inode_alloc_inode, &inode_alloc_bh, 1); |
ccd979bd | 635 | if (status < 0) { |
1b1dcc1b | 636 | mutex_unlock(&inode_alloc_inode->i_mutex); |
ccd979bd MF |
637 | |
638 | mlog_errno(status); | |
639 | goto bail; | |
640 | } | |
641 | ||
a90714c1 | 642 | handle = ocfs2_start_trans(osb, OCFS2_DELETE_INODE_CREDITS + |
9b7895ef | 643 | ocfs2_quota_trans_credits(inode->i_sb)); |
ccd979bd MF |
644 | if (IS_ERR(handle)) { |
645 | status = PTR_ERR(handle); | |
646 | mlog_errno(status); | |
647 | goto bail_unlock; | |
648 | } | |
649 | ||
d4cd1871 LD |
650 | if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)) { |
651 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
652 | orphan_dir_bh); | |
653 | if (status < 0) { | |
654 | mlog_errno(status); | |
655 | goto bail_commit; | |
656 | } | |
ccd979bd MF |
657 | } |
658 | ||
659 | /* set the inodes dtime */ | |
0cf2f763 | 660 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), di_bh, |
13723d00 | 661 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
662 | if (status < 0) { |
663 | mlog_errno(status); | |
664 | goto bail_commit; | |
665 | } | |
666 | ||
667 | di->i_dtime = cpu_to_le64(CURRENT_TIME.tv_sec); | |
4092d49f | 668 | di->i_flags &= cpu_to_le32(~(OCFS2_VALID_FL | OCFS2_ORPHANED_FL)); |
ec20cec7 | 669 | ocfs2_journal_dirty(handle, di_bh); |
ccd979bd | 670 | |
8cb471e8 | 671 | ocfs2_remove_from_cache(INODE_CACHE(inode), di_bh); |
63936dda | 672 | dquot_free_inode(inode); |
ccd979bd MF |
673 | |
674 | status = ocfs2_free_dinode(handle, inode_alloc_inode, | |
675 | inode_alloc_bh, di); | |
676 | if (status < 0) | |
677 | mlog_errno(status); | |
678 | ||
679 | bail_commit: | |
02dc1af4 | 680 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 681 | bail_unlock: |
e63aecb6 | 682 | ocfs2_inode_unlock(inode_alloc_inode, 1); |
1b1dcc1b | 683 | mutex_unlock(&inode_alloc_inode->i_mutex); |
ccd979bd MF |
684 | brelse(inode_alloc_bh); |
685 | bail: | |
686 | iput(inode_alloc_inode); | |
687 | ||
688 | return status; | |
689 | } | |
690 | ||
2bd63216 | 691 | /* |
b4df6ed8 MF |
692 | * Serialize with orphan dir recovery. If the process doing |
693 | * recovery on this orphan dir does an iget() with the dir | |
694 | * i_mutex held, we'll deadlock here. Instead we detect this | |
695 | * and exit early - recovery will wipe this inode for us. | |
696 | */ | |
697 | static int ocfs2_check_orphan_recovery_state(struct ocfs2_super *osb, | |
698 | int slot) | |
699 | { | |
700 | int ret = 0; | |
701 | ||
702 | spin_lock(&osb->osb_lock); | |
703 | if (ocfs2_node_map_test_bit(osb, &osb->osb_recovering_orphan_dirs, slot)) { | |
b4df6ed8 MF |
704 | ret = -EDEADLK; |
705 | goto out; | |
706 | } | |
707 | /* This signals to the orphan recovery process that it should | |
708 | * wait for us to handle the wipe. */ | |
709 | osb->osb_orphan_wipes[slot]++; | |
710 | out: | |
711 | spin_unlock(&osb->osb_lock); | |
64f3b269 | 712 | trace_ocfs2_check_orphan_recovery_state(slot, ret); |
b4df6ed8 MF |
713 | return ret; |
714 | } | |
715 | ||
716 | static void ocfs2_signal_wipe_completion(struct ocfs2_super *osb, | |
717 | int slot) | |
718 | { | |
719 | spin_lock(&osb->osb_lock); | |
720 | osb->osb_orphan_wipes[slot]--; | |
721 | spin_unlock(&osb->osb_lock); | |
722 | ||
723 | wake_up(&osb->osb_wipe_event); | |
724 | } | |
725 | ||
ccd979bd MF |
726 | static int ocfs2_wipe_inode(struct inode *inode, |
727 | struct buffer_head *di_bh) | |
728 | { | |
d577632e | 729 | int status, orphaned_slot = -1; |
ccd979bd MF |
730 | struct inode *orphan_dir_inode = NULL; |
731 | struct buffer_head *orphan_dir_bh = NULL; | |
732 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
d4cd1871 | 733 | struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data; |
ccd979bd | 734 | |
d4cd1871 LD |
735 | if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)) { |
736 | orphaned_slot = le16_to_cpu(di->i_orphaned_slot); | |
b4df6ed8 | 737 | |
d4cd1871 LD |
738 | status = ocfs2_check_orphan_recovery_state(osb, orphaned_slot); |
739 | if (status) | |
740 | return status; | |
b4df6ed8 | 741 | |
d4cd1871 LD |
742 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, |
743 | ORPHAN_DIR_SYSTEM_INODE, | |
744 | orphaned_slot); | |
745 | if (!orphan_dir_inode) { | |
746 | status = -EEXIST; | |
747 | mlog_errno(status); | |
748 | goto bail; | |
749 | } | |
ccd979bd | 750 | |
d4cd1871 LD |
751 | /* Lock the orphan dir. The lock will be held for the entire |
752 | * delete_inode operation. We do this now to avoid races with | |
753 | * recovery completion on other nodes. */ | |
754 | mutex_lock(&orphan_dir_inode->i_mutex); | |
755 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); | |
756 | if (status < 0) { | |
757 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
ccd979bd | 758 | |
d4cd1871 LD |
759 | mlog_errno(status); |
760 | goto bail; | |
761 | } | |
ccd979bd MF |
762 | } |
763 | ||
764 | /* we do this while holding the orphan dir lock because we | |
34d024f8 MF |
765 | * don't want recovery being run from another node to try an |
766 | * inode delete underneath us -- this will result in two nodes | |
ccd979bd MF |
767 | * truncating the same file! */ |
768 | status = ocfs2_truncate_for_delete(osb, inode, di_bh); | |
769 | if (status < 0) { | |
770 | mlog_errno(status); | |
771 | goto bail_unlock_dir; | |
772 | } | |
773 | ||
9b7895ef MF |
774 | /* Remove any dir index tree */ |
775 | if (S_ISDIR(inode->i_mode)) { | |
776 | status = ocfs2_dx_dir_truncate(inode, di_bh); | |
777 | if (status) { | |
778 | mlog_errno(status); | |
779 | goto bail_unlock_dir; | |
780 | } | |
781 | } | |
782 | ||
cf1d6c76 TY |
783 | /*Free extended attribute resources associated with this inode.*/ |
784 | status = ocfs2_xattr_remove(inode, di_bh); | |
785 | if (status < 0) { | |
786 | mlog_errno(status); | |
787 | goto bail_unlock_dir; | |
788 | } | |
789 | ||
8b2c0dba TM |
790 | status = ocfs2_remove_refcount_tree(inode, di_bh); |
791 | if (status < 0) { | |
792 | mlog_errno(status); | |
793 | goto bail_unlock_dir; | |
794 | } | |
795 | ||
ccd979bd MF |
796 | status = ocfs2_remove_inode(inode, di_bh, orphan_dir_inode, |
797 | orphan_dir_bh); | |
798 | if (status < 0) | |
799 | mlog_errno(status); | |
800 | ||
801 | bail_unlock_dir: | |
d4cd1871 LD |
802 | if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR) |
803 | return status; | |
804 | ||
e63aecb6 | 805 | ocfs2_inode_unlock(orphan_dir_inode, 1); |
1b1dcc1b | 806 | mutex_unlock(&orphan_dir_inode->i_mutex); |
ccd979bd MF |
807 | brelse(orphan_dir_bh); |
808 | bail: | |
809 | iput(orphan_dir_inode); | |
b4df6ed8 | 810 | ocfs2_signal_wipe_completion(osb, orphaned_slot); |
ccd979bd MF |
811 | |
812 | return status; | |
813 | } | |
814 | ||
815 | /* There is a series of simple checks that should be done before a | |
34d024f8 | 816 | * trylock is even considered. Encapsulate those in this function. */ |
ccd979bd MF |
817 | static int ocfs2_inode_is_valid_to_delete(struct inode *inode) |
818 | { | |
819 | int ret = 0; | |
820 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
821 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
822 | ||
64f3b269 TM |
823 | trace_ocfs2_inode_is_valid_to_delete(current, osb->dc_task, |
824 | (unsigned long long)oi->ip_blkno, | |
825 | oi->ip_flags); | |
826 | ||
ccd979bd MF |
827 | /* We shouldn't be getting here for the root directory |
828 | * inode.. */ | |
829 | if (inode == osb->root_inode) { | |
830 | mlog(ML_ERROR, "Skipping delete of root inode.\n"); | |
831 | goto bail; | |
832 | } | |
833 | ||
bd62ad7a JK |
834 | /* |
835 | * If we're coming from downconvert_thread we can't go into our own | |
836 | * voting [hello, deadlock city!] so we cannot delete the inode. But | |
837 | * since we dropped last inode ref when downconverting dentry lock, | |
838 | * we cannot have the file open and thus the node doing unlink will | |
839 | * take care of deleting the inode. | |
840 | */ | |
64f3b269 | 841 | if (current == osb->dc_task) |
ccd979bd | 842 | goto bail; |
ccd979bd MF |
843 | |
844 | spin_lock(&oi->ip_lock); | |
845 | /* OCFS2 *never* deletes system files. This should technically | |
846 | * never get here as system file inodes should always have a | |
847 | * positive link count. */ | |
848 | if (oi->ip_flags & OCFS2_INODE_SYSTEM_FILE) { | |
b0697053 MF |
849 | mlog(ML_ERROR, "Skipping delete of system file %llu\n", |
850 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
851 | goto bail_unlock; |
852 | } | |
853 | ||
ccd979bd MF |
854 | ret = 1; |
855 | bail_unlock: | |
856 | spin_unlock(&oi->ip_lock); | |
857 | bail: | |
858 | return ret; | |
859 | } | |
860 | ||
861 | /* Query the cluster to determine whether we should wipe an inode from | |
862 | * disk or not. | |
863 | * | |
864 | * Requires the inode to have the cluster lock. */ | |
865 | static int ocfs2_query_inode_wipe(struct inode *inode, | |
866 | struct buffer_head *di_bh, | |
867 | int *wipe) | |
868 | { | |
64f3b269 | 869 | int status = 0, reason = 0; |
ccd979bd MF |
870 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
871 | struct ocfs2_dinode *di; | |
872 | ||
873 | *wipe = 0; | |
874 | ||
64f3b269 TM |
875 | trace_ocfs2_query_inode_wipe_begin((unsigned long long)oi->ip_blkno, |
876 | inode->i_nlink); | |
877 | ||
ccd979bd MF |
878 | /* While we were waiting for the cluster lock in |
879 | * ocfs2_delete_inode, another node might have asked to delete | |
880 | * the inode. Recheck our flags to catch this. */ | |
881 | if (!ocfs2_inode_is_valid_to_delete(inode)) { | |
64f3b269 | 882 | reason = 1; |
ccd979bd MF |
883 | goto bail; |
884 | } | |
885 | ||
886 | /* Now that we have an up to date inode, we can double check | |
887 | * the link count. */ | |
64f3b269 | 888 | if (inode->i_nlink) |
ccd979bd | 889 | goto bail; |
ccd979bd MF |
890 | |
891 | /* Do some basic inode verification... */ | |
892 | di = (struct ocfs2_dinode *) di_bh->b_data; | |
d4cd1871 LD |
893 | if (!(di->i_flags & cpu_to_le32(OCFS2_ORPHANED_FL)) && |
894 | !(oi->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)) { | |
b54c2ca4 TY |
895 | /* |
896 | * Inodes in the orphan dir must have ORPHANED_FL. The only | |
897 | * inodes that come back out of the orphan dir are reflink | |
898 | * targets. A reflink target may be moved out of the orphan | |
899 | * dir between the time we scan the directory and the time we | |
900 | * process it. This would lead to HAS_REFCOUNT_FL being set but | |
901 | * ORPHANED_FL not. | |
902 | */ | |
903 | if (di->i_dyn_features & cpu_to_le16(OCFS2_HAS_REFCOUNT_FL)) { | |
64f3b269 | 904 | reason = 2; |
b54c2ca4 TY |
905 | goto bail; |
906 | } | |
907 | ||
ccd979bd MF |
908 | /* for lack of a better error? */ |
909 | status = -EEXIST; | |
910 | mlog(ML_ERROR, | |
b0697053 | 911 | "Inode %llu (on-disk %llu) not orphaned! " |
ccd979bd | 912 | "Disk flags 0x%x, inode flags 0x%x\n", |
b0697053 | 913 | (unsigned long long)oi->ip_blkno, |
1ca1a111 MF |
914 | (unsigned long long)le64_to_cpu(di->i_blkno), |
915 | le32_to_cpu(di->i_flags), oi->ip_flags); | |
ccd979bd MF |
916 | goto bail; |
917 | } | |
918 | ||
919 | /* has someone already deleted us?! baaad... */ | |
920 | if (di->i_dtime) { | |
921 | status = -EEXIST; | |
922 | mlog_errno(status); | |
923 | goto bail; | |
924 | } | |
925 | ||
6f16bf65 MF |
926 | /* |
927 | * This is how ocfs2 determines whether an inode is still live | |
928 | * within the cluster. Every node takes a shared read lock on | |
929 | * the inode open lock in ocfs2_read_locked_inode(). When we | |
930 | * get to ->delete_inode(), each node tries to convert it's | |
931 | * lock to an exclusive. Trylocks are serialized by the inode | |
25985edc | 932 | * meta data lock. If the upconvert succeeds, we know the inode |
6f16bf65 MF |
933 | * is no longer live and can be deleted. |
934 | * | |
935 | * Though we call this with the meta data lock held, the | |
936 | * trylock keeps us from ABBA deadlock. | |
937 | */ | |
938 | status = ocfs2_try_open_lock(inode, 1); | |
50008630 | 939 | if (status == -EAGAIN) { |
ccd979bd | 940 | status = 0; |
64f3b269 | 941 | reason = 3; |
ccd979bd MF |
942 | goto bail; |
943 | } | |
944 | if (status < 0) { | |
945 | mlog_errno(status); | |
946 | goto bail; | |
947 | } | |
948 | ||
50008630 | 949 | *wipe = 1; |
64f3b269 | 950 | trace_ocfs2_query_inode_wipe_succ(le16_to_cpu(di->i_orphaned_slot)); |
ccd979bd MF |
951 | |
952 | bail: | |
64f3b269 | 953 | trace_ocfs2_query_inode_wipe_end(status, reason); |
ccd979bd MF |
954 | return status; |
955 | } | |
956 | ||
957 | /* Support function for ocfs2_delete_inode. Will help us keep the | |
958 | * inode data in a consistent state for clear_inode. Always truncates | |
959 | * pages, optionally sync's them first. */ | |
960 | static void ocfs2_cleanup_delete_inode(struct inode *inode, | |
961 | int sync_data) | |
962 | { | |
64f3b269 TM |
963 | trace_ocfs2_cleanup_delete_inode( |
964 | (unsigned long long)OCFS2_I(inode)->ip_blkno, sync_data); | |
ccd979bd | 965 | if (sync_data) |
249ec93c | 966 | filemap_write_and_wait(inode->i_mapping); |
91b0abe3 | 967 | truncate_inode_pages_final(&inode->i_data); |
ccd979bd MF |
968 | } |
969 | ||
066d92dc | 970 | static void ocfs2_delete_inode(struct inode *inode) |
ccd979bd MF |
971 | { |
972 | int wipe, status; | |
e4b963f1 | 973 | sigset_t oldset; |
ccd979bd MF |
974 | struct buffer_head *di_bh = NULL; |
975 | ||
64f3b269 TM |
976 | trace_ocfs2_delete_inode(inode->i_ino, |
977 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
978 | is_bad_inode(inode)); | |
ccd979bd | 979 | |
a90714c1 JK |
980 | /* When we fail in read_inode() we mark inode as bad. The second test |
981 | * catches the case when inode allocation fails before allocating | |
982 | * a block for inode. */ | |
64f3b269 | 983 | if (is_bad_inode(inode) || !OCFS2_I(inode)->ip_blkno) |
ccd979bd | 984 | goto bail; |
ccd979bd MF |
985 | |
986 | if (!ocfs2_inode_is_valid_to_delete(inode)) { | |
987 | /* It's probably not necessary to truncate_inode_pages | |
988 | * here but we do it for safety anyway (it will most | |
989 | * likely be a no-op anyway) */ | |
990 | ocfs2_cleanup_delete_inode(inode, 0); | |
991 | goto bail; | |
992 | } | |
993 | ||
bd62ad7a JK |
994 | dquot_initialize(inode); |
995 | ||
ccd979bd MF |
996 | /* We want to block signals in delete_inode as the lock and |
997 | * messaging paths may return us -ERESTARTSYS. Which would | |
998 | * cause us to exit early, resulting in inodes being orphaned | |
999 | * forever. */ | |
e4b963f1 | 1000 | ocfs2_block_signals(&oldset); |
ccd979bd | 1001 | |
6ca497a8 | 1002 | /* |
1003 | * Synchronize us against ocfs2_get_dentry. We take this in | |
1004 | * shared mode so that all nodes can still concurrently | |
1005 | * process deletes. | |
1006 | */ | |
1007 | status = ocfs2_nfs_sync_lock(OCFS2_SB(inode->i_sb), 0); | |
1008 | if (status < 0) { | |
1009 | mlog(ML_ERROR, "getting nfs sync lock(PR) failed %d\n", status); | |
1010 | ocfs2_cleanup_delete_inode(inode, 0); | |
1011 | goto bail_unblock; | |
1012 | } | |
ccd979bd MF |
1013 | /* Lock down the inode. This gives us an up to date view of |
1014 | * it's metadata (for verification), and allows us to | |
34d024f8 | 1015 | * serialize delete_inode on multiple nodes. |
ccd979bd MF |
1016 | * |
1017 | * Even though we might be doing a truncate, we don't take the | |
1018 | * allocation lock here as it won't be needed - nobody will | |
1019 | * have the file open. | |
1020 | */ | |
e63aecb6 | 1021 | status = ocfs2_inode_lock(inode, &di_bh, 1); |
ccd979bd MF |
1022 | if (status < 0) { |
1023 | if (status != -ENOENT) | |
1024 | mlog_errno(status); | |
1025 | ocfs2_cleanup_delete_inode(inode, 0); | |
6ca497a8 | 1026 | goto bail_unlock_nfs_sync; |
ccd979bd MF |
1027 | } |
1028 | ||
1029 | /* Query the cluster. This will be the final decision made | |
1030 | * before we go ahead and wipe the inode. */ | |
1031 | status = ocfs2_query_inode_wipe(inode, di_bh, &wipe); | |
1032 | if (!wipe || status < 0) { | |
34d024f8 | 1033 | /* Error and remote inode busy both mean we won't be |
ccd979bd MF |
1034 | * removing the inode, so they take almost the same |
1035 | * path. */ | |
1036 | if (status < 0) | |
1037 | mlog_errno(status); | |
1038 | ||
34d024f8 MF |
1039 | /* Someone in the cluster has disallowed a wipe of |
1040 | * this inode, or it was never completely | |
1041 | * orphaned. Write out the pages and exit now. */ | |
ccd979bd MF |
1042 | ocfs2_cleanup_delete_inode(inode, 1); |
1043 | goto bail_unlock_inode; | |
1044 | } | |
1045 | ||
1046 | ocfs2_cleanup_delete_inode(inode, 0); | |
1047 | ||
1048 | status = ocfs2_wipe_inode(inode, di_bh); | |
1049 | if (status < 0) { | |
b4df6ed8 MF |
1050 | if (status != -EDEADLK) |
1051 | mlog_errno(status); | |
ccd979bd MF |
1052 | goto bail_unlock_inode; |
1053 | } | |
1054 | ||
24c19ef4 MF |
1055 | /* |
1056 | * Mark the inode as successfully deleted. | |
1057 | * | |
1058 | * This is important for ocfs2_clear_inode() as it will check | |
1059 | * this flag and skip any checkpointing work | |
1060 | * | |
1061 | * ocfs2_stuff_meta_lvb() also uses this flag to invalidate | |
1062 | * the LVB for other nodes. | |
1063 | */ | |
ccd979bd MF |
1064 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_DELETED; |
1065 | ||
1066 | bail_unlock_inode: | |
e63aecb6 | 1067 | ocfs2_inode_unlock(inode, 1); |
ccd979bd | 1068 | brelse(di_bh); |
6ca497a8 | 1069 | |
1070 | bail_unlock_nfs_sync: | |
1071 | ocfs2_nfs_sync_unlock(OCFS2_SB(inode->i_sb), 0); | |
1072 | ||
ccd979bd | 1073 | bail_unblock: |
e4b963f1 | 1074 | ocfs2_unblock_signals(&oldset); |
ccd979bd | 1075 | bail: |
c1e8d35e | 1076 | return; |
ccd979bd MF |
1077 | } |
1078 | ||
066d92dc | 1079 | static void ocfs2_clear_inode(struct inode *inode) |
ccd979bd MF |
1080 | { |
1081 | int status; | |
1082 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
84d86f83 | 1083 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
ccd979bd | 1084 | |
dbd5768f | 1085 | clear_inode(inode); |
64f3b269 TM |
1086 | trace_ocfs2_clear_inode((unsigned long long)oi->ip_blkno, |
1087 | inode->i_nlink); | |
ccd979bd MF |
1088 | |
1089 | mlog_bug_on_msg(OCFS2_SB(inode->i_sb) == NULL, | |
1090 | "Inode=%lu\n", inode->i_ino); | |
1091 | ||
9f754758 | 1092 | dquot_drop(inode); |
257ba15c | 1093 | |
34d024f8 MF |
1094 | /* To preven remote deletes we hold open lock before, now it |
1095 | * is time to unlock PR and EX open locks. */ | |
50008630 TY |
1096 | ocfs2_open_unlock(inode); |
1097 | ||
ccd979bd | 1098 | /* Do these before all the other work so that we don't bounce |
34d024f8 | 1099 | * the downconvert thread while waiting to destroy the locks. */ |
84d86f83 JK |
1100 | ocfs2_mark_lockres_freeing(osb, &oi->ip_rw_lockres); |
1101 | ocfs2_mark_lockres_freeing(osb, &oi->ip_inode_lockres); | |
1102 | ocfs2_mark_lockres_freeing(osb, &oi->ip_open_lockres); | |
ccd979bd | 1103 | |
4fe370af MF |
1104 | ocfs2_resv_discard(&OCFS2_SB(inode->i_sb)->osb_la_resmap, |
1105 | &oi->ip_la_data_resv); | |
1106 | ocfs2_resv_init_once(&oi->ip_la_data_resv); | |
1107 | ||
ccd979bd MF |
1108 | /* We very well may get a clear_inode before all an inodes |
1109 | * metadata has hit disk. Of course, we can't drop any cluster | |
1110 | * locks until the journal has finished with it. The only | |
1111 | * exception here are successfully wiped inodes - their | |
1112 | * metadata can now be considered to be part of the system | |
1113 | * inodes from which it came. */ | |
1114 | if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED)) | |
1115 | ocfs2_checkpoint_inode(inode); | |
1116 | ||
1117 | mlog_bug_on_msg(!list_empty(&oi->ip_io_markers), | |
b0697053 MF |
1118 | "Clear inode of %llu, inode has io markers\n", |
1119 | (unsigned long long)oi->ip_blkno); | |
ccd979bd | 1120 | |
83418978 MF |
1121 | ocfs2_extent_map_trunc(inode, 0); |
1122 | ||
ccd979bd MF |
1123 | status = ocfs2_drop_inode_locks(inode); |
1124 | if (status < 0) | |
1125 | mlog_errno(status); | |
1126 | ||
1127 | ocfs2_lock_res_free(&oi->ip_rw_lockres); | |
e63aecb6 | 1128 | ocfs2_lock_res_free(&oi->ip_inode_lockres); |
50008630 | 1129 | ocfs2_lock_res_free(&oi->ip_open_lockres); |
ccd979bd | 1130 | |
66fb345d | 1131 | ocfs2_metadata_cache_exit(INODE_CACHE(inode)); |
ccd979bd | 1132 | |
8cb471e8 | 1133 | mlog_bug_on_msg(INODE_CACHE(inode)->ci_num_cached, |
b0697053 | 1134 | "Clear inode of %llu, inode has %u cache items\n", |
8cb471e8 JB |
1135 | (unsigned long long)oi->ip_blkno, |
1136 | INODE_CACHE(inode)->ci_num_cached); | |
ccd979bd | 1137 | |
8cb471e8 | 1138 | mlog_bug_on_msg(!(INODE_CACHE(inode)->ci_flags & OCFS2_CACHE_FL_INLINE), |
b0697053 MF |
1139 | "Clear inode of %llu, inode has a bad flag\n", |
1140 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
1141 | |
1142 | mlog_bug_on_msg(spin_is_locked(&oi->ip_lock), | |
b0697053 MF |
1143 | "Clear inode of %llu, inode is locked\n", |
1144 | (unsigned long long)oi->ip_blkno); | |
ccd979bd | 1145 | |
251b6ecc | 1146 | mlog_bug_on_msg(!mutex_trylock(&oi->ip_io_mutex), |
b0697053 MF |
1147 | "Clear inode of %llu, io_mutex is locked\n", |
1148 | (unsigned long long)oi->ip_blkno); | |
251b6ecc | 1149 | mutex_unlock(&oi->ip_io_mutex); |
ccd979bd MF |
1150 | |
1151 | /* | |
1152 | * down_trylock() returns 0, down_write_trylock() returns 1 | |
1153 | * kernel 1, world 0 | |
1154 | */ | |
1155 | mlog_bug_on_msg(!down_write_trylock(&oi->ip_alloc_sem), | |
b0697053 MF |
1156 | "Clear inode of %llu, alloc_sem is locked\n", |
1157 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
1158 | up_write(&oi->ip_alloc_sem); |
1159 | ||
1160 | mlog_bug_on_msg(oi->ip_open_count, | |
b0697053 MF |
1161 | "Clear inode of %llu has open count %d\n", |
1162 | (unsigned long long)oi->ip_blkno, oi->ip_open_count); | |
ccd979bd MF |
1163 | |
1164 | /* Clear all other flags. */ | |
47460d65 | 1165 | oi->ip_flags = 0; |
ccd979bd MF |
1166 | oi->ip_dir_start_lookup = 0; |
1167 | oi->ip_blkno = 0ULL; | |
ae0dff68 SM |
1168 | |
1169 | /* | |
1170 | * ip_jinode is used to track txns against this inode. We ensure that | |
1171 | * the journal is flushed before journal shutdown. Thus it is safe to | |
1172 | * have inodes get cleaned up after journal shutdown. | |
1173 | */ | |
2b4e30fb JB |
1174 | jbd2_journal_release_jbd_inode(OCFS2_SB(inode->i_sb)->journal->j_journal, |
1175 | &oi->ip_jinode); | |
ccd979bd MF |
1176 | } |
1177 | ||
066d92dc AV |
1178 | void ocfs2_evict_inode(struct inode *inode) |
1179 | { | |
1180 | if (!inode->i_nlink || | |
1181 | (OCFS2_I(inode)->ip_flags & OCFS2_INODE_MAYBE_ORPHANED)) { | |
1182 | ocfs2_delete_inode(inode); | |
1183 | } else { | |
91b0abe3 | 1184 | truncate_inode_pages_final(&inode->i_data); |
066d92dc AV |
1185 | } |
1186 | ocfs2_clear_inode(inode); | |
1187 | } | |
1188 | ||
ccd979bd MF |
1189 | /* Called under inode_lock, with no more references on the |
1190 | * struct inode, so it's safe here to check the flags field | |
1191 | * and to manipulate i_nlink without any other locks. */ | |
45321ac5 | 1192 | int ocfs2_drop_inode(struct inode *inode) |
ccd979bd MF |
1193 | { |
1194 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
45321ac5 | 1195 | int res; |
ccd979bd | 1196 | |
64f3b269 TM |
1197 | trace_ocfs2_drop_inode((unsigned long long)oi->ip_blkno, |
1198 | inode->i_nlink, oi->ip_flags); | |
ccd979bd | 1199 | |
379dfe9d | 1200 | if (oi->ip_flags & OCFS2_INODE_MAYBE_ORPHANED) |
45321ac5 | 1201 | res = 1; |
379dfe9d | 1202 | else |
45321ac5 | 1203 | res = generic_drop_inode(inode); |
ccd979bd | 1204 | |
45321ac5 | 1205 | return res; |
ccd979bd MF |
1206 | } |
1207 | ||
ccd979bd MF |
1208 | /* |
1209 | * This is called from our getattr. | |
1210 | */ | |
1211 | int ocfs2_inode_revalidate(struct dentry *dentry) | |
1212 | { | |
1213 | struct inode *inode = dentry->d_inode; | |
1214 | int status = 0; | |
1215 | ||
64f3b269 TM |
1216 | trace_ocfs2_inode_revalidate(inode, |
1217 | inode ? (unsigned long long)OCFS2_I(inode)->ip_blkno : 0ULL, | |
1218 | inode ? (unsigned long long)OCFS2_I(inode)->ip_flags : 0); | |
ccd979bd MF |
1219 | |
1220 | if (!inode) { | |
ccd979bd MF |
1221 | status = -ENOENT; |
1222 | goto bail; | |
1223 | } | |
1224 | ||
1225 | spin_lock(&OCFS2_I(inode)->ip_lock); | |
1226 | if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED) { | |
1227 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
ccd979bd MF |
1228 | status = -ENOENT; |
1229 | goto bail; | |
1230 | } | |
1231 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
1232 | ||
e63aecb6 | 1233 | /* Let ocfs2_inode_lock do the work of updating our struct |
ccd979bd | 1234 | * inode for us. */ |
e63aecb6 | 1235 | status = ocfs2_inode_lock(inode, NULL, 0); |
ccd979bd MF |
1236 | if (status < 0) { |
1237 | if (status != -ENOENT) | |
1238 | mlog_errno(status); | |
1239 | goto bail; | |
1240 | } | |
e63aecb6 | 1241 | ocfs2_inode_unlock(inode, 0); |
ccd979bd | 1242 | bail: |
ccd979bd MF |
1243 | return status; |
1244 | } | |
1245 | ||
1246 | /* | |
1247 | * Updates a disk inode from a | |
1248 | * struct inode. | |
1249 | * Only takes ip_lock. | |
1250 | */ | |
1fabe148 | 1251 | int ocfs2_mark_inode_dirty(handle_t *handle, |
ccd979bd MF |
1252 | struct inode *inode, |
1253 | struct buffer_head *bh) | |
1254 | { | |
1255 | int status; | |
1256 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) bh->b_data; | |
1257 | ||
64f3b269 | 1258 | trace_ocfs2_mark_inode_dirty((unsigned long long)OCFS2_I(inode)->ip_blkno); |
ccd979bd | 1259 | |
0cf2f763 | 1260 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), bh, |
13723d00 | 1261 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1262 | if (status < 0) { |
1263 | mlog_errno(status); | |
1264 | goto leave; | |
1265 | } | |
1266 | ||
1267 | spin_lock(&OCFS2_I(inode)->ip_lock); | |
1268 | fe->i_clusters = cpu_to_le32(OCFS2_I(inode)->ip_clusters); | |
6e4b0d56 | 1269 | ocfs2_get_inode_flags(OCFS2_I(inode)); |
ca4d147e | 1270 | fe->i_attr = cpu_to_le32(OCFS2_I(inode)->ip_attr); |
15b1e36b | 1271 | fe->i_dyn_features = cpu_to_le16(OCFS2_I(inode)->ip_dyn_features); |
ccd979bd MF |
1272 | spin_unlock(&OCFS2_I(inode)->ip_lock); |
1273 | ||
1274 | fe->i_size = cpu_to_le64(i_size_read(inode)); | |
198a1ca3 | 1275 | ocfs2_set_links_count(fe, inode->i_nlink); |
2c034176 EB |
1276 | fe->i_uid = cpu_to_le32(i_uid_read(inode)); |
1277 | fe->i_gid = cpu_to_le32(i_gid_read(inode)); | |
ccd979bd MF |
1278 | fe->i_mode = cpu_to_le16(inode->i_mode); |
1279 | fe->i_atime = cpu_to_le64(inode->i_atime.tv_sec); | |
1280 | fe->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); | |
1281 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); | |
1282 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
1283 | fe->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec); | |
1284 | fe->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); | |
1285 | ||
ec20cec7 | 1286 | ocfs2_journal_dirty(handle, bh); |
2931cdcb | 1287 | ocfs2_update_inode_fsync_trans(handle, inode, 1); |
ccd979bd | 1288 | leave: |
ccd979bd MF |
1289 | return status; |
1290 | } | |
1291 | ||
1292 | /* | |
1293 | * | |
1294 | * Updates a struct inode from a disk inode. | |
1295 | * does no i/o, only takes ip_lock. | |
1296 | */ | |
1297 | void ocfs2_refresh_inode(struct inode *inode, | |
1298 | struct ocfs2_dinode *fe) | |
1299 | { | |
ccd979bd MF |
1300 | spin_lock(&OCFS2_I(inode)->ip_lock); |
1301 | ||
1302 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); | |
ca4d147e | 1303 | OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr); |
15b1e36b | 1304 | OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features); |
ca4d147e | 1305 | ocfs2_set_inode_flags(inode); |
ccd979bd | 1306 | i_size_write(inode, le64_to_cpu(fe->i_size)); |
bfe86848 | 1307 | set_nlink(inode, ocfs2_read_links_count(fe)); |
2c034176 EB |
1308 | i_uid_write(inode, le32_to_cpu(fe->i_uid)); |
1309 | i_gid_write(inode, le32_to_cpu(fe->i_gid)); | |
ccd979bd | 1310 | inode->i_mode = le16_to_cpu(fe->i_mode); |
ccd979bd MF |
1311 | if (S_ISLNK(inode->i_mode) && le32_to_cpu(fe->i_clusters) == 0) |
1312 | inode->i_blocks = 0; | |
1313 | else | |
8110b073 | 1314 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd MF |
1315 | inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime); |
1316 | inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec); | |
1317 | inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime); | |
1318 | inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec); | |
1319 | inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime); | |
1320 | inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec); | |
1321 | ||
1322 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
1323 | } | |
b657c95c JB |
1324 | |
1325 | int ocfs2_validate_inode_block(struct super_block *sb, | |
1326 | struct buffer_head *bh) | |
1327 | { | |
d6b32bbb | 1328 | int rc; |
b657c95c JB |
1329 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data; |
1330 | ||
64f3b269 | 1331 | trace_ocfs2_validate_inode_block((unsigned long long)bh->b_blocknr); |
970e4936 | 1332 | |
b657c95c JB |
1333 | BUG_ON(!buffer_uptodate(bh)); |
1334 | ||
d6b32bbb JB |
1335 | /* |
1336 | * If the ecc fails, we return the error but otherwise | |
1337 | * leave the filesystem running. We know any error is | |
1338 | * local to this block. | |
1339 | */ | |
1340 | rc = ocfs2_validate_meta_ecc(sb, bh->b_data, &di->i_check); | |
13723d00 JB |
1341 | if (rc) { |
1342 | mlog(ML_ERROR, "Checksum failed for dinode %llu\n", | |
1343 | (unsigned long long)bh->b_blocknr); | |
d6b32bbb | 1344 | goto bail; |
13723d00 | 1345 | } |
d6b32bbb JB |
1346 | |
1347 | /* | |
1348 | * Errors after here are fatal. | |
1349 | */ | |
1350 | ||
1351 | rc = -EINVAL; | |
1352 | ||
b657c95c JB |
1353 | if (!OCFS2_IS_VALID_DINODE(di)) { |
1354 | ocfs2_error(sb, "Invalid dinode #%llu: signature = %.*s\n", | |
1355 | (unsigned long long)bh->b_blocknr, 7, | |
1356 | di->i_signature); | |
1357 | goto bail; | |
1358 | } | |
1359 | ||
1360 | if (le64_to_cpu(di->i_blkno) != bh->b_blocknr) { | |
1361 | ocfs2_error(sb, "Invalid dinode #%llu: i_blkno is %llu\n", | |
1362 | (unsigned long long)bh->b_blocknr, | |
1363 | (unsigned long long)le64_to_cpu(di->i_blkno)); | |
1364 | goto bail; | |
1365 | } | |
1366 | ||
1367 | if (!(di->i_flags & cpu_to_le32(OCFS2_VALID_FL))) { | |
1368 | ocfs2_error(sb, | |
1369 | "Invalid dinode #%llu: OCFS2_VALID_FL not set\n", | |
1370 | (unsigned long long)bh->b_blocknr); | |
1371 | goto bail; | |
1372 | } | |
1373 | ||
1374 | if (le32_to_cpu(di->i_fs_generation) != | |
1375 | OCFS2_SB(sb)->fs_generation) { | |
1376 | ocfs2_error(sb, | |
1377 | "Invalid dinode #%llu: fs_generation is %u\n", | |
1378 | (unsigned long long)bh->b_blocknr, | |
1379 | le32_to_cpu(di->i_fs_generation)); | |
1380 | goto bail; | |
1381 | } | |
1382 | ||
1383 | rc = 0; | |
1384 | ||
1385 | bail: | |
1386 | return rc; | |
1387 | } | |
1388 | ||
1389 | int ocfs2_read_inode_block_full(struct inode *inode, struct buffer_head **bh, | |
1390 | int flags) | |
1391 | { | |
1392 | int rc; | |
1393 | struct buffer_head *tmp = *bh; | |
1394 | ||
8cb471e8 JB |
1395 | rc = ocfs2_read_blocks(INODE_CACHE(inode), OCFS2_I(inode)->ip_blkno, |
1396 | 1, &tmp, flags, ocfs2_validate_inode_block); | |
b657c95c JB |
1397 | |
1398 | /* If ocfs2_read_blocks() got us a new bh, pass it up. */ | |
970e4936 | 1399 | if (!rc && !*bh) |
b657c95c JB |
1400 | *bh = tmp; |
1401 | ||
b657c95c JB |
1402 | return rc; |
1403 | } | |
1404 | ||
1405 | int ocfs2_read_inode_block(struct inode *inode, struct buffer_head **bh) | |
1406 | { | |
1407 | return ocfs2_read_inode_block_full(inode, bh, 0); | |
1408 | } | |
6e5a3d75 | 1409 | |
6e5a3d75 JB |
1410 | |
1411 | static u64 ocfs2_inode_cache_owner(struct ocfs2_caching_info *ci) | |
1412 | { | |
1413 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1414 | ||
1415 | return oi->ip_blkno; | |
1416 | } | |
1417 | ||
8cb471e8 JB |
1418 | static struct super_block *ocfs2_inode_cache_get_super(struct ocfs2_caching_info *ci) |
1419 | { | |
1420 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1421 | ||
1422 | return oi->vfs_inode.i_sb; | |
1423 | } | |
1424 | ||
6e5a3d75 JB |
1425 | static void ocfs2_inode_cache_lock(struct ocfs2_caching_info *ci) |
1426 | { | |
1427 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1428 | ||
1429 | spin_lock(&oi->ip_lock); | |
1430 | } | |
1431 | ||
1432 | static void ocfs2_inode_cache_unlock(struct ocfs2_caching_info *ci) | |
1433 | { | |
1434 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1435 | ||
1436 | spin_unlock(&oi->ip_lock); | |
1437 | } | |
1438 | ||
1439 | static void ocfs2_inode_cache_io_lock(struct ocfs2_caching_info *ci) | |
1440 | { | |
1441 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1442 | ||
1443 | mutex_lock(&oi->ip_io_mutex); | |
1444 | } | |
1445 | ||
1446 | static void ocfs2_inode_cache_io_unlock(struct ocfs2_caching_info *ci) | |
1447 | { | |
1448 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1449 | ||
1450 | mutex_unlock(&oi->ip_io_mutex); | |
1451 | } | |
1452 | ||
1453 | const struct ocfs2_caching_operations ocfs2_inode_caching_ops = { | |
1454 | .co_owner = ocfs2_inode_cache_owner, | |
8cb471e8 | 1455 | .co_get_super = ocfs2_inode_cache_get_super, |
6e5a3d75 JB |
1456 | .co_cache_lock = ocfs2_inode_cache_lock, |
1457 | .co_cache_unlock = ocfs2_inode_cache_unlock, | |
1458 | .co_io_lock = ocfs2_inode_cache_io_lock, | |
1459 | .co_io_unlock = ocfs2_inode_cache_io_unlock, | |
1460 | }; | |
1461 |