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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; | |
133 | ||
64f3b269 TM |
134 | trace_ocfs2_iget_begin((unsigned long long)blkno, flags, |
135 | sysfile_type); | |
ccd979bd MF |
136 | |
137 | /* Ok. By now we've either got the offsets passed to us by the | |
138 | * caller, or we just pulled them off the bh. Lets do some | |
139 | * sanity checks to make sure they're OK. */ | |
140 | if (blkno == 0) { | |
141 | inode = ERR_PTR(-EINVAL); | |
142 | mlog_errno(PTR_ERR(inode)); | |
143 | goto bail; | |
144 | } | |
145 | ||
146 | args.fi_blkno = blkno; | |
24c19ef4 | 147 | args.fi_flags = flags; |
ccd979bd | 148 | args.fi_ino = ino_from_blkno(sb, blkno); |
5fa0613e | 149 | args.fi_sysfile_type = sysfile_type; |
ccd979bd MF |
150 | |
151 | inode = iget5_locked(sb, args.fi_ino, ocfs2_find_actor, | |
152 | ocfs2_init_locked_inode, &args); | |
153 | /* inode was *not* in the inode cache. 2.6.x requires | |
154 | * us to do our own read_inode call and unlock it | |
155 | * afterwards. */ | |
ccd979bd MF |
156 | if (inode == NULL) { |
157 | inode = ERR_PTR(-ENOMEM); | |
158 | mlog_errno(PTR_ERR(inode)); | |
159 | goto bail; | |
160 | } | |
64f3b269 | 161 | trace_ocfs2_iget5_locked(inode->i_state); |
6218b90e | 162 | if (inode->i_state & I_NEW) { |
6218b90e TM |
163 | ocfs2_read_locked_inode(inode, &args); |
164 | unlock_new_inode(inode); | |
165 | } | |
ccd979bd MF |
166 | if (is_bad_inode(inode)) { |
167 | iput(inode); | |
168 | inode = ERR_PTR(-ESTALE); | |
ccd979bd MF |
169 | goto bail; |
170 | } | |
171 | ||
172 | bail: | |
173 | if (!IS_ERR(inode)) { | |
64f3b269 TM |
174 | trace_ocfs2_iget_end(inode, |
175 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
6a1bd4a5 | 176 | } |
ccd979bd MF |
177 | |
178 | return inode; | |
179 | } | |
180 | ||
181 | ||
182 | /* | |
183 | * here's how inodes get read from disk: | |
184 | * iget5_locked -> find_actor -> OCFS2_FIND_ACTOR | |
185 | * found? : return the in-memory inode | |
186 | * not found? : get_new_inode -> OCFS2_INIT_LOCKED_INODE | |
187 | */ | |
188 | ||
189 | static int ocfs2_find_actor(struct inode *inode, void *opaque) | |
190 | { | |
191 | struct ocfs2_find_inode_args *args = NULL; | |
192 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
193 | int ret = 0; | |
194 | ||
ccd979bd MF |
195 | args = opaque; |
196 | ||
197 | mlog_bug_on_msg(!inode, "No inode in find actor!\n"); | |
198 | ||
64f3b269 TM |
199 | trace_ocfs2_find_actor(inode, inode->i_ino, opaque, args->fi_blkno); |
200 | ||
ccd979bd MF |
201 | if (oi->ip_blkno != args->fi_blkno) |
202 | goto bail; | |
203 | ||
ccd979bd MF |
204 | ret = 1; |
205 | bail: | |
ccd979bd MF |
206 | return ret; |
207 | } | |
208 | ||
209 | /* | |
210 | * initialize the new inode, but don't do anything that would cause | |
211 | * us to sleep. | |
212 | * return 0 on success, 1 on failure | |
213 | */ | |
214 | static int ocfs2_init_locked_inode(struct inode *inode, void *opaque) | |
215 | { | |
216 | struct ocfs2_find_inode_args *args = opaque; | |
cb25797d JK |
217 | static struct lock_class_key ocfs2_quota_ip_alloc_sem_key, |
218 | ocfs2_file_ip_alloc_sem_key; | |
ccd979bd | 219 | |
ccd979bd MF |
220 | inode->i_ino = args->fi_ino; |
221 | OCFS2_I(inode)->ip_blkno = args->fi_blkno; | |
5fa0613e JK |
222 | if (args->fi_sysfile_type != 0) |
223 | lockdep_set_class(&inode->i_mutex, | |
224 | &ocfs2_sysfile_lock_key[args->fi_sysfile_type]); | |
cb25797d JK |
225 | if (args->fi_sysfile_type == USER_QUOTA_SYSTEM_INODE || |
226 | args->fi_sysfile_type == GROUP_QUOTA_SYSTEM_INODE || | |
227 | args->fi_sysfile_type == LOCAL_USER_QUOTA_SYSTEM_INODE || | |
228 | args->fi_sysfile_type == LOCAL_GROUP_QUOTA_SYSTEM_INODE) | |
229 | lockdep_set_class(&OCFS2_I(inode)->ip_alloc_sem, | |
230 | &ocfs2_quota_ip_alloc_sem_key); | |
231 | else | |
232 | lockdep_set_class(&OCFS2_I(inode)->ip_alloc_sem, | |
233 | &ocfs2_file_ip_alloc_sem_key); | |
ccd979bd | 234 | |
ccd979bd MF |
235 | return 0; |
236 | } | |
237 | ||
b657c95c JB |
238 | void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe, |
239 | int create_ino) | |
ccd979bd MF |
240 | { |
241 | struct super_block *sb; | |
242 | struct ocfs2_super *osb; | |
53da4939 | 243 | int use_plocks = 1; |
ccd979bd | 244 | |
ccd979bd MF |
245 | sb = inode->i_sb; |
246 | osb = OCFS2_SB(sb); | |
247 | ||
53da4939 MF |
248 | if ((osb->s_mount_opt & OCFS2_MOUNT_LOCALFLOCKS) || |
249 | ocfs2_mount_local(osb) || !ocfs2_stack_supports_plocks()) | |
250 | use_plocks = 0; | |
251 | ||
b657c95c JB |
252 | /* |
253 | * These have all been checked by ocfs2_read_inode_block() or set | |
254 | * by ocfs2_mknod_locked(), so a failure is a code bug. | |
255 | */ | |
256 | BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); /* This means that read_inode | |
257 | cannot create a superblock | |
258 | inode today. change if | |
259 | that is needed. */ | |
260 | BUG_ON(!(fe->i_flags & cpu_to_le32(OCFS2_VALID_FL))); | |
261 | BUG_ON(le32_to_cpu(fe->i_fs_generation) != osb->fs_generation); | |
ccd979bd | 262 | |
ccd979bd | 263 | |
8110b073 MF |
264 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); |
265 | OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr); | |
15b1e36b | 266 | OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features); |
8110b073 | 267 | |
ccd979bd MF |
268 | inode->i_version = 1; |
269 | inode->i_generation = le32_to_cpu(fe->i_generation); | |
270 | inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev)); | |
271 | inode->i_mode = le16_to_cpu(fe->i_mode); | |
272 | inode->i_uid = le32_to_cpu(fe->i_uid); | |
273 | inode->i_gid = le32_to_cpu(fe->i_gid); | |
ccd979bd MF |
274 | |
275 | /* Fast symlinks will have i_size but no allocated clusters. */ | |
ea022dfb | 276 | if (S_ISLNK(inode->i_mode) && !fe->i_clusters) { |
ccd979bd | 277 | inode->i_blocks = 0; |
ea022dfb AV |
278 | inode->i_mapping->a_ops = &ocfs2_fast_symlink_aops; |
279 | } else { | |
8110b073 | 280 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ea022dfb AV |
281 | inode->i_mapping->a_ops = &ocfs2_aops; |
282 | } | |
ccd979bd MF |
283 | inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime); |
284 | inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec); | |
285 | inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime); | |
286 | inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec); | |
287 | inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime); | |
288 | inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec); | |
289 | ||
290 | if (OCFS2_I(inode)->ip_blkno != le64_to_cpu(fe->i_blkno)) | |
291 | mlog(ML_ERROR, | |
b0697053 MF |
292 | "ip_blkno %llu != i_blkno %llu!\n", |
293 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
1ca1a111 | 294 | (unsigned long long)le64_to_cpu(fe->i_blkno)); |
ccd979bd | 295 | |
bfe86848 | 296 | set_nlink(inode, ocfs2_read_links_count(fe)); |
ccd979bd | 297 | |
64f3b269 TM |
298 | trace_ocfs2_populate_inode(OCFS2_I(inode)->ip_blkno, |
299 | le32_to_cpu(fe->i_flags)); | |
bbbd0eb3 | 300 | if (fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) { |
24c19ef4 | 301 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SYSTEM_FILE; |
bbbd0eb3 JK |
302 | inode->i_flags |= S_NOQUOTA; |
303 | } | |
64f3b269 | 304 | |
ccd979bd MF |
305 | if (fe->i_flags & cpu_to_le32(OCFS2_LOCAL_ALLOC_FL)) { |
306 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP; | |
ccd979bd MF |
307 | } else if (fe->i_flags & cpu_to_le32(OCFS2_BITMAP_FL)) { |
308 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP; | |
1a224ad1 JK |
309 | } else if (fe->i_flags & cpu_to_le32(OCFS2_QUOTA_FL)) { |
310 | inode->i_flags |= S_NOQUOTA; | |
ccd979bd | 311 | } else if (fe->i_flags & cpu_to_le32(OCFS2_SUPER_BLOCK_FL)) { |
ccd979bd MF |
312 | /* we can't actually hit this as read_inode can't |
313 | * handle superblocks today ;-) */ | |
314 | BUG(); | |
315 | } | |
316 | ||
317 | switch (inode->i_mode & S_IFMT) { | |
318 | case S_IFREG: | |
53da4939 MF |
319 | if (use_plocks) |
320 | inode->i_fop = &ocfs2_fops; | |
321 | else | |
322 | inode->i_fop = &ocfs2_fops_no_plocks; | |
ccd979bd MF |
323 | inode->i_op = &ocfs2_file_iops; |
324 | i_size_write(inode, le64_to_cpu(fe->i_size)); | |
325 | break; | |
326 | case S_IFDIR: | |
327 | inode->i_op = &ocfs2_dir_iops; | |
53da4939 MF |
328 | if (use_plocks) |
329 | inode->i_fop = &ocfs2_dops; | |
330 | else | |
331 | inode->i_fop = &ocfs2_dops_no_plocks; | |
ccd979bd | 332 | i_size_write(inode, le64_to_cpu(fe->i_size)); |
5e98d492 | 333 | OCFS2_I(inode)->ip_dir_lock_gen = 1; |
ccd979bd MF |
334 | break; |
335 | case S_IFLNK: | |
ea022dfb | 336 | inode->i_op = &ocfs2_symlink_inode_operations; |
ccd979bd MF |
337 | i_size_write(inode, le64_to_cpu(fe->i_size)); |
338 | break; | |
339 | default: | |
340 | inode->i_op = &ocfs2_special_file_iops; | |
341 | init_special_inode(inode, inode->i_mode, | |
342 | inode->i_rdev); | |
343 | break; | |
344 | } | |
345 | ||
24c19ef4 MF |
346 | if (create_ino) { |
347 | inode->i_ino = ino_from_blkno(inode->i_sb, | |
348 | le64_to_cpu(fe->i_blkno)); | |
349 | ||
350 | /* | |
351 | * If we ever want to create system files from kernel, | |
352 | * the generation argument to | |
353 | * ocfs2_inode_lock_res_init() will have to change. | |
354 | */ | |
1ca1a111 | 355 | BUG_ON(le32_to_cpu(fe->i_flags) & OCFS2_SYSTEM_FL); |
24c19ef4 | 356 | |
e63aecb6 | 357 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_inode_lockres, |
24c19ef4 | 358 | OCFS2_LOCK_TYPE_META, 0, inode); |
50008630 TY |
359 | |
360 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres, | |
361 | OCFS2_LOCK_TYPE_OPEN, 0, inode); | |
24c19ef4 MF |
362 | } |
363 | ||
ccd979bd | 364 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_rw_lockres, |
24c19ef4 MF |
365 | OCFS2_LOCK_TYPE_RW, inode->i_generation, |
366 | inode); | |
367 | ||
ca4d147e | 368 | ocfs2_set_inode_flags(inode); |
ca4d147e | 369 | |
13821151 TM |
370 | OCFS2_I(inode)->ip_last_used_slot = 0; |
371 | OCFS2_I(inode)->ip_last_used_group = 0; | |
e3b4a97d MF |
372 | |
373 | if (S_ISDIR(inode->i_mode)) | |
374 | ocfs2_resv_set_type(&OCFS2_I(inode)->ip_la_data_resv, | |
375 | OCFS2_RESV_FLAG_DIR); | |
ccd979bd MF |
376 | } |
377 | ||
378 | static int ocfs2_read_locked_inode(struct inode *inode, | |
379 | struct ocfs2_find_inode_args *args) | |
380 | { | |
381 | struct super_block *sb; | |
382 | struct ocfs2_super *osb; | |
383 | struct ocfs2_dinode *fe; | |
384 | struct buffer_head *bh = NULL; | |
24c19ef4 MF |
385 | int status, can_lock; |
386 | u32 generation = 0; | |
ccd979bd | 387 | |
ccd979bd MF |
388 | status = -EINVAL; |
389 | if (inode == NULL || inode->i_sb == NULL) { | |
390 | mlog(ML_ERROR, "bad inode\n"); | |
24c19ef4 | 391 | return status; |
ccd979bd MF |
392 | } |
393 | sb = inode->i_sb; | |
394 | osb = OCFS2_SB(sb); | |
395 | ||
396 | if (!args) { | |
397 | mlog(ML_ERROR, "bad inode args\n"); | |
398 | make_bad_inode(inode); | |
24c19ef4 MF |
399 | return status; |
400 | } | |
401 | ||
402 | /* | |
403 | * To improve performance of cold-cache inode stats, we take | |
404 | * the cluster lock here if possible. | |
405 | * | |
406 | * Generally, OCFS2 never trusts the contents of an inode | |
407 | * unless it's holding a cluster lock, so taking it here isn't | |
408 | * a correctness issue as much as it is a performance | |
409 | * improvement. | |
410 | * | |
411 | * There are three times when taking the lock is not a good idea: | |
412 | * | |
413 | * 1) During startup, before we have initialized the DLM. | |
414 | * | |
415 | * 2) If we are reading certain system files which never get | |
416 | * cluster locks (local alloc, truncate log). | |
417 | * | |
418 | * 3) If the process doing the iget() is responsible for | |
419 | * orphan dir recovery. We're holding the orphan dir lock and | |
420 | * can get into a deadlock with another process on another | |
421 | * node in ->delete_inode(). | |
422 | * | |
423 | * #1 and #2 can be simply solved by never taking the lock | |
424 | * here for system files (which are the only type we read | |
425 | * during mount). It's a heavier approach, but our main | |
b595076a | 426 | * concern is user-accessible files anyway. |
24c19ef4 MF |
427 | * |
428 | * #3 works itself out because we'll eventually take the | |
429 | * cluster lock before trusting anything anyway. | |
430 | */ | |
431 | can_lock = !(args->fi_flags & OCFS2_FI_FLAG_SYSFILE) | |
50008630 | 432 | && !(args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY) |
c271c5c2 | 433 | && !ocfs2_mount_local(osb); |
24c19ef4 | 434 | |
64f3b269 TM |
435 | trace_ocfs2_read_locked_inode( |
436 | (unsigned long long)OCFS2_I(inode)->ip_blkno, can_lock); | |
437 | ||
24c19ef4 MF |
438 | /* |
439 | * To maintain backwards compatibility with older versions of | |
440 | * ocfs2-tools, we still store the generation value for system | |
441 | * files. The only ones that actually matter to userspace are | |
442 | * the journals, but it's easier and inexpensive to just flag | |
443 | * all system files similarly. | |
444 | */ | |
445 | if (args->fi_flags & OCFS2_FI_FLAG_SYSFILE) | |
446 | generation = osb->fs_generation; | |
447 | ||
e63aecb6 | 448 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_inode_lockres, |
24c19ef4 MF |
449 | OCFS2_LOCK_TYPE_META, |
450 | generation, inode); | |
451 | ||
50008630 TY |
452 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres, |
453 | OCFS2_LOCK_TYPE_OPEN, | |
454 | 0, inode); | |
455 | ||
24c19ef4 | 456 | if (can_lock) { |
50008630 TY |
457 | status = ocfs2_open_lock(inode); |
458 | if (status) { | |
459 | make_bad_inode(inode); | |
460 | mlog_errno(status); | |
461 | return status; | |
462 | } | |
e63aecb6 | 463 | status = ocfs2_inode_lock(inode, NULL, 0); |
24c19ef4 MF |
464 | if (status) { |
465 | make_bad_inode(inode); | |
466 | mlog_errno(status); | |
467 | return status; | |
468 | } | |
ccd979bd MF |
469 | } |
470 | ||
50008630 TY |
471 | if (args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY) { |
472 | status = ocfs2_try_open_lock(inode, 0); | |
473 | if (status) { | |
2bd63216 | 474 | make_bad_inode(inode); |
50008630 TY |
475 | return status; |
476 | } | |
477 | } | |
478 | ||
b657c95c JB |
479 | if (can_lock) { |
480 | status = ocfs2_read_inode_block_full(inode, &bh, | |
481 | OCFS2_BH_IGNORE_CACHE); | |
482 | } else { | |
da1e9098 | 483 | status = ocfs2_read_blocks_sync(osb, args->fi_blkno, 1, &bh); |
f5ce5a08 SM |
484 | /* |
485 | * If buffer is in jbd, then its checksum may not have been | |
486 | * computed as yet. | |
487 | */ | |
488 | if (!status && !buffer_jbd(bh)) | |
b657c95c JB |
489 | status = ocfs2_validate_inode_block(osb->sb, bh); |
490 | } | |
ccd979bd MF |
491 | if (status < 0) { |
492 | mlog_errno(status); | |
ccd979bd MF |
493 | goto bail; |
494 | } | |
495 | ||
24c19ef4 | 496 | status = -EINVAL; |
ccd979bd | 497 | fe = (struct ocfs2_dinode *) bh->b_data; |
ccd979bd | 498 | |
24c19ef4 MF |
499 | /* |
500 | * This is a code bug. Right now the caller needs to | |
501 | * understand whether it is asking for a system file inode or | |
502 | * not so the proper lock names can be built. | |
503 | */ | |
504 | mlog_bug_on_msg(!!(fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) != | |
505 | !!(args->fi_flags & OCFS2_FI_FLAG_SYSFILE), | |
506 | "Inode %llu: system file state is ambigous\n", | |
507 | (unsigned long long)args->fi_blkno); | |
ccd979bd MF |
508 | |
509 | if (S_ISCHR(le16_to_cpu(fe->i_mode)) || | |
510 | S_ISBLK(le16_to_cpu(fe->i_mode))) | |
b657c95c | 511 | inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev)); |
ccd979bd | 512 | |
b657c95c | 513 | ocfs2_populate_inode(inode, fe, 0); |
ccd979bd MF |
514 | |
515 | BUG_ON(args->fi_blkno != le64_to_cpu(fe->i_blkno)); | |
516 | ||
ccd979bd MF |
517 | status = 0; |
518 | ||
519 | bail: | |
24c19ef4 | 520 | if (can_lock) |
e63aecb6 | 521 | ocfs2_inode_unlock(inode, 0); |
24c19ef4 MF |
522 | |
523 | if (status < 0) | |
524 | make_bad_inode(inode); | |
525 | ||
ccd979bd MF |
526 | if (args && bh) |
527 | brelse(bh); | |
528 | ||
ccd979bd MF |
529 | return status; |
530 | } | |
531 | ||
532 | void ocfs2_sync_blockdev(struct super_block *sb) | |
533 | { | |
534 | sync_blockdev(sb->s_bdev); | |
535 | } | |
536 | ||
537 | static int ocfs2_truncate_for_delete(struct ocfs2_super *osb, | |
538 | struct inode *inode, | |
539 | struct buffer_head *fe_bh) | |
540 | { | |
541 | int status = 0; | |
ccd979bd | 542 | struct ocfs2_dinode *fe; |
60b11392 | 543 | handle_t *handle = NULL; |
ccd979bd | 544 | |
ccd979bd MF |
545 | fe = (struct ocfs2_dinode *) fe_bh->b_data; |
546 | ||
1afc32b9 MF |
547 | /* |
548 | * This check will also skip truncate of inodes with inline | |
549 | * data and fast symlinks. | |
550 | */ | |
3a0782d0 | 551 | if (fe->i_clusters) { |
2b4e30fb JB |
552 | if (ocfs2_should_order_data(inode)) |
553 | ocfs2_begin_ordered_truncate(inode, 0); | |
554 | ||
60b11392 MF |
555 | handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); |
556 | if (IS_ERR(handle)) { | |
557 | status = PTR_ERR(handle); | |
0350cb07 | 558 | handle = NULL; |
60b11392 MF |
559 | mlog_errno(status); |
560 | goto out; | |
561 | } | |
562 | ||
0cf2f763 JB |
563 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), |
564 | fe_bh, | |
13723d00 | 565 | OCFS2_JOURNAL_ACCESS_WRITE); |
60b11392 MF |
566 | if (status < 0) { |
567 | mlog_errno(status); | |
568 | goto out; | |
569 | } | |
570 | ||
571 | i_size_write(inode, 0); | |
572 | ||
573 | status = ocfs2_mark_inode_dirty(handle, inode, fe_bh); | |
574 | if (status < 0) { | |
575 | mlog_errno(status); | |
576 | goto out; | |
577 | } | |
578 | ||
579 | ocfs2_commit_trans(osb, handle); | |
580 | handle = NULL; | |
581 | ||
78f94673 | 582 | status = ocfs2_commit_truncate(osb, inode, fe_bh); |
3a0782d0 MF |
583 | if (status < 0) { |
584 | mlog_errno(status); | |
585 | goto out; | |
586 | } | |
ccd979bd | 587 | } |
ccd979bd | 588 | |
60b11392 MF |
589 | out: |
590 | if (handle) | |
591 | ocfs2_commit_trans(osb, handle); | |
ccd979bd MF |
592 | return status; |
593 | } | |
594 | ||
595 | static int ocfs2_remove_inode(struct inode *inode, | |
596 | struct buffer_head *di_bh, | |
597 | struct inode *orphan_dir_inode, | |
598 | struct buffer_head *orphan_dir_bh) | |
599 | { | |
600 | int status; | |
601 | struct inode *inode_alloc_inode = NULL; | |
602 | struct buffer_head *inode_alloc_bh = NULL; | |
1fabe148 | 603 | handle_t *handle; |
ccd979bd MF |
604 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
605 | struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data; | |
606 | ||
607 | inode_alloc_inode = | |
608 | ocfs2_get_system_file_inode(osb, INODE_ALLOC_SYSTEM_INODE, | |
609 | le16_to_cpu(di->i_suballoc_slot)); | |
610 | if (!inode_alloc_inode) { | |
611 | status = -EEXIST; | |
612 | mlog_errno(status); | |
613 | goto bail; | |
614 | } | |
615 | ||
1b1dcc1b | 616 | mutex_lock(&inode_alloc_inode->i_mutex); |
e63aecb6 | 617 | status = ocfs2_inode_lock(inode_alloc_inode, &inode_alloc_bh, 1); |
ccd979bd | 618 | if (status < 0) { |
1b1dcc1b | 619 | mutex_unlock(&inode_alloc_inode->i_mutex); |
ccd979bd MF |
620 | |
621 | mlog_errno(status); | |
622 | goto bail; | |
623 | } | |
624 | ||
a90714c1 | 625 | handle = ocfs2_start_trans(osb, OCFS2_DELETE_INODE_CREDITS + |
9b7895ef | 626 | ocfs2_quota_trans_credits(inode->i_sb)); |
ccd979bd MF |
627 | if (IS_ERR(handle)) { |
628 | status = PTR_ERR(handle); | |
629 | mlog_errno(status); | |
630 | goto bail_unlock; | |
631 | } | |
632 | ||
d4cd1871 LD |
633 | if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)) { |
634 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
635 | orphan_dir_bh); | |
636 | if (status < 0) { | |
637 | mlog_errno(status); | |
638 | goto bail_commit; | |
639 | } | |
ccd979bd MF |
640 | } |
641 | ||
642 | /* set the inodes dtime */ | |
0cf2f763 | 643 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), di_bh, |
13723d00 | 644 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
645 | if (status < 0) { |
646 | mlog_errno(status); | |
647 | goto bail_commit; | |
648 | } | |
649 | ||
650 | di->i_dtime = cpu_to_le64(CURRENT_TIME.tv_sec); | |
4092d49f | 651 | di->i_flags &= cpu_to_le32(~(OCFS2_VALID_FL | OCFS2_ORPHANED_FL)); |
ec20cec7 | 652 | ocfs2_journal_dirty(handle, di_bh); |
ccd979bd | 653 | |
8cb471e8 | 654 | ocfs2_remove_from_cache(INODE_CACHE(inode), di_bh); |
63936dda | 655 | dquot_free_inode(inode); |
ccd979bd MF |
656 | |
657 | status = ocfs2_free_dinode(handle, inode_alloc_inode, | |
658 | inode_alloc_bh, di); | |
659 | if (status < 0) | |
660 | mlog_errno(status); | |
661 | ||
662 | bail_commit: | |
02dc1af4 | 663 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 664 | bail_unlock: |
e63aecb6 | 665 | ocfs2_inode_unlock(inode_alloc_inode, 1); |
1b1dcc1b | 666 | mutex_unlock(&inode_alloc_inode->i_mutex); |
ccd979bd MF |
667 | brelse(inode_alloc_bh); |
668 | bail: | |
669 | iput(inode_alloc_inode); | |
670 | ||
671 | return status; | |
672 | } | |
673 | ||
2bd63216 | 674 | /* |
b4df6ed8 MF |
675 | * Serialize with orphan dir recovery. If the process doing |
676 | * recovery on this orphan dir does an iget() with the dir | |
677 | * i_mutex held, we'll deadlock here. Instead we detect this | |
678 | * and exit early - recovery will wipe this inode for us. | |
679 | */ | |
680 | static int ocfs2_check_orphan_recovery_state(struct ocfs2_super *osb, | |
681 | int slot) | |
682 | { | |
683 | int ret = 0; | |
684 | ||
685 | spin_lock(&osb->osb_lock); | |
686 | if (ocfs2_node_map_test_bit(osb, &osb->osb_recovering_orphan_dirs, slot)) { | |
b4df6ed8 MF |
687 | ret = -EDEADLK; |
688 | goto out; | |
689 | } | |
690 | /* This signals to the orphan recovery process that it should | |
691 | * wait for us to handle the wipe. */ | |
692 | osb->osb_orphan_wipes[slot]++; | |
693 | out: | |
694 | spin_unlock(&osb->osb_lock); | |
64f3b269 | 695 | trace_ocfs2_check_orphan_recovery_state(slot, ret); |
b4df6ed8 MF |
696 | return ret; |
697 | } | |
698 | ||
699 | static void ocfs2_signal_wipe_completion(struct ocfs2_super *osb, | |
700 | int slot) | |
701 | { | |
702 | spin_lock(&osb->osb_lock); | |
703 | osb->osb_orphan_wipes[slot]--; | |
704 | spin_unlock(&osb->osb_lock); | |
705 | ||
706 | wake_up(&osb->osb_wipe_event); | |
707 | } | |
708 | ||
ccd979bd MF |
709 | static int ocfs2_wipe_inode(struct inode *inode, |
710 | struct buffer_head *di_bh) | |
711 | { | |
d577632e | 712 | int status, orphaned_slot = -1; |
ccd979bd MF |
713 | struct inode *orphan_dir_inode = NULL; |
714 | struct buffer_head *orphan_dir_bh = NULL; | |
715 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
d4cd1871 | 716 | struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data; |
ccd979bd | 717 | |
d4cd1871 LD |
718 | if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)) { |
719 | orphaned_slot = le16_to_cpu(di->i_orphaned_slot); | |
b4df6ed8 | 720 | |
d4cd1871 LD |
721 | status = ocfs2_check_orphan_recovery_state(osb, orphaned_slot); |
722 | if (status) | |
723 | return status; | |
b4df6ed8 | 724 | |
d4cd1871 LD |
725 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, |
726 | ORPHAN_DIR_SYSTEM_INODE, | |
727 | orphaned_slot); | |
728 | if (!orphan_dir_inode) { | |
729 | status = -EEXIST; | |
730 | mlog_errno(status); | |
731 | goto bail; | |
732 | } | |
ccd979bd | 733 | |
d4cd1871 LD |
734 | /* Lock the orphan dir. The lock will be held for the entire |
735 | * delete_inode operation. We do this now to avoid races with | |
736 | * recovery completion on other nodes. */ | |
737 | mutex_lock(&orphan_dir_inode->i_mutex); | |
738 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); | |
739 | if (status < 0) { | |
740 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
ccd979bd | 741 | |
d4cd1871 LD |
742 | mlog_errno(status); |
743 | goto bail; | |
744 | } | |
ccd979bd MF |
745 | } |
746 | ||
747 | /* we do this while holding the orphan dir lock because we | |
34d024f8 MF |
748 | * don't want recovery being run from another node to try an |
749 | * inode delete underneath us -- this will result in two nodes | |
ccd979bd MF |
750 | * truncating the same file! */ |
751 | status = ocfs2_truncate_for_delete(osb, inode, di_bh); | |
752 | if (status < 0) { | |
753 | mlog_errno(status); | |
754 | goto bail_unlock_dir; | |
755 | } | |
756 | ||
9b7895ef MF |
757 | /* Remove any dir index tree */ |
758 | if (S_ISDIR(inode->i_mode)) { | |
759 | status = ocfs2_dx_dir_truncate(inode, di_bh); | |
760 | if (status) { | |
761 | mlog_errno(status); | |
762 | goto bail_unlock_dir; | |
763 | } | |
764 | } | |
765 | ||
cf1d6c76 TY |
766 | /*Free extended attribute resources associated with this inode.*/ |
767 | status = ocfs2_xattr_remove(inode, di_bh); | |
768 | if (status < 0) { | |
769 | mlog_errno(status); | |
770 | goto bail_unlock_dir; | |
771 | } | |
772 | ||
8b2c0dba TM |
773 | status = ocfs2_remove_refcount_tree(inode, di_bh); |
774 | if (status < 0) { | |
775 | mlog_errno(status); | |
776 | goto bail_unlock_dir; | |
777 | } | |
778 | ||
ccd979bd MF |
779 | status = ocfs2_remove_inode(inode, di_bh, orphan_dir_inode, |
780 | orphan_dir_bh); | |
781 | if (status < 0) | |
782 | mlog_errno(status); | |
783 | ||
784 | bail_unlock_dir: | |
d4cd1871 LD |
785 | if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR) |
786 | return status; | |
787 | ||
e63aecb6 | 788 | ocfs2_inode_unlock(orphan_dir_inode, 1); |
1b1dcc1b | 789 | mutex_unlock(&orphan_dir_inode->i_mutex); |
ccd979bd MF |
790 | brelse(orphan_dir_bh); |
791 | bail: | |
792 | iput(orphan_dir_inode); | |
b4df6ed8 | 793 | ocfs2_signal_wipe_completion(osb, orphaned_slot); |
ccd979bd MF |
794 | |
795 | return status; | |
796 | } | |
797 | ||
798 | /* There is a series of simple checks that should be done before a | |
34d024f8 | 799 | * trylock is even considered. Encapsulate those in this function. */ |
ccd979bd MF |
800 | static int ocfs2_inode_is_valid_to_delete(struct inode *inode) |
801 | { | |
802 | int ret = 0; | |
803 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
804 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
805 | ||
64f3b269 TM |
806 | trace_ocfs2_inode_is_valid_to_delete(current, osb->dc_task, |
807 | (unsigned long long)oi->ip_blkno, | |
808 | oi->ip_flags); | |
809 | ||
ccd979bd MF |
810 | /* We shouldn't be getting here for the root directory |
811 | * inode.. */ | |
812 | if (inode == osb->root_inode) { | |
813 | mlog(ML_ERROR, "Skipping delete of root inode.\n"); | |
814 | goto bail; | |
815 | } | |
816 | ||
34d024f8 | 817 | /* If we're coming from downconvert_thread we can't go into our own |
ccd979bd MF |
818 | * voting [hello, deadlock city!], so unforuntately we just |
819 | * have to skip deleting this guy. That's OK though because | |
820 | * the node who's doing the actual deleting should handle it | |
821 | * anyway. */ | |
64f3b269 | 822 | if (current == osb->dc_task) |
ccd979bd | 823 | goto bail; |
ccd979bd MF |
824 | |
825 | spin_lock(&oi->ip_lock); | |
826 | /* OCFS2 *never* deletes system files. This should technically | |
827 | * never get here as system file inodes should always have a | |
828 | * positive link count. */ | |
829 | if (oi->ip_flags & OCFS2_INODE_SYSTEM_FILE) { | |
b0697053 MF |
830 | mlog(ML_ERROR, "Skipping delete of system file %llu\n", |
831 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
832 | goto bail_unlock; |
833 | } | |
834 | ||
34d024f8 MF |
835 | /* If we have allowd wipe of this inode for another node, it |
836 | * will be marked here so we can safely skip it. Recovery will | |
25985edc | 837 | * cleanup any inodes we might inadvertently skip here. */ |
64f3b269 | 838 | if (oi->ip_flags & OCFS2_INODE_SKIP_DELETE) |
ccd979bd | 839 | goto bail_unlock; |
ccd979bd MF |
840 | |
841 | ret = 1; | |
842 | bail_unlock: | |
843 | spin_unlock(&oi->ip_lock); | |
844 | bail: | |
845 | return ret; | |
846 | } | |
847 | ||
848 | /* Query the cluster to determine whether we should wipe an inode from | |
849 | * disk or not. | |
850 | * | |
851 | * Requires the inode to have the cluster lock. */ | |
852 | static int ocfs2_query_inode_wipe(struct inode *inode, | |
853 | struct buffer_head *di_bh, | |
854 | int *wipe) | |
855 | { | |
64f3b269 | 856 | int status = 0, reason = 0; |
ccd979bd MF |
857 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
858 | struct ocfs2_dinode *di; | |
859 | ||
860 | *wipe = 0; | |
861 | ||
64f3b269 TM |
862 | trace_ocfs2_query_inode_wipe_begin((unsigned long long)oi->ip_blkno, |
863 | inode->i_nlink); | |
864 | ||
ccd979bd MF |
865 | /* While we were waiting for the cluster lock in |
866 | * ocfs2_delete_inode, another node might have asked to delete | |
867 | * the inode. Recheck our flags to catch this. */ | |
868 | if (!ocfs2_inode_is_valid_to_delete(inode)) { | |
64f3b269 | 869 | reason = 1; |
ccd979bd MF |
870 | goto bail; |
871 | } | |
872 | ||
873 | /* Now that we have an up to date inode, we can double check | |
874 | * the link count. */ | |
64f3b269 | 875 | if (inode->i_nlink) |
ccd979bd | 876 | goto bail; |
ccd979bd MF |
877 | |
878 | /* Do some basic inode verification... */ | |
879 | di = (struct ocfs2_dinode *) di_bh->b_data; | |
d4cd1871 LD |
880 | if (!(di->i_flags & cpu_to_le32(OCFS2_ORPHANED_FL)) && |
881 | !(oi->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)) { | |
b54c2ca4 TY |
882 | /* |
883 | * Inodes in the orphan dir must have ORPHANED_FL. The only | |
884 | * inodes that come back out of the orphan dir are reflink | |
885 | * targets. A reflink target may be moved out of the orphan | |
886 | * dir between the time we scan the directory and the time we | |
887 | * process it. This would lead to HAS_REFCOUNT_FL being set but | |
888 | * ORPHANED_FL not. | |
889 | */ | |
890 | if (di->i_dyn_features & cpu_to_le16(OCFS2_HAS_REFCOUNT_FL)) { | |
64f3b269 | 891 | reason = 2; |
b54c2ca4 TY |
892 | goto bail; |
893 | } | |
894 | ||
ccd979bd MF |
895 | /* for lack of a better error? */ |
896 | status = -EEXIST; | |
897 | mlog(ML_ERROR, | |
b0697053 | 898 | "Inode %llu (on-disk %llu) not orphaned! " |
ccd979bd | 899 | "Disk flags 0x%x, inode flags 0x%x\n", |
b0697053 | 900 | (unsigned long long)oi->ip_blkno, |
1ca1a111 MF |
901 | (unsigned long long)le64_to_cpu(di->i_blkno), |
902 | le32_to_cpu(di->i_flags), oi->ip_flags); | |
ccd979bd MF |
903 | goto bail; |
904 | } | |
905 | ||
906 | /* has someone already deleted us?! baaad... */ | |
907 | if (di->i_dtime) { | |
908 | status = -EEXIST; | |
909 | mlog_errno(status); | |
910 | goto bail; | |
911 | } | |
912 | ||
6f16bf65 MF |
913 | /* |
914 | * This is how ocfs2 determines whether an inode is still live | |
915 | * within the cluster. Every node takes a shared read lock on | |
916 | * the inode open lock in ocfs2_read_locked_inode(). When we | |
917 | * get to ->delete_inode(), each node tries to convert it's | |
918 | * lock to an exclusive. Trylocks are serialized by the inode | |
25985edc | 919 | * meta data lock. If the upconvert succeeds, we know the inode |
6f16bf65 MF |
920 | * is no longer live and can be deleted. |
921 | * | |
922 | * Though we call this with the meta data lock held, the | |
923 | * trylock keeps us from ABBA deadlock. | |
924 | */ | |
925 | status = ocfs2_try_open_lock(inode, 1); | |
50008630 | 926 | if (status == -EAGAIN) { |
ccd979bd | 927 | status = 0; |
64f3b269 | 928 | reason = 3; |
ccd979bd MF |
929 | goto bail; |
930 | } | |
931 | if (status < 0) { | |
932 | mlog_errno(status); | |
933 | goto bail; | |
934 | } | |
935 | ||
50008630 | 936 | *wipe = 1; |
64f3b269 | 937 | trace_ocfs2_query_inode_wipe_succ(le16_to_cpu(di->i_orphaned_slot)); |
ccd979bd MF |
938 | |
939 | bail: | |
64f3b269 | 940 | trace_ocfs2_query_inode_wipe_end(status, reason); |
ccd979bd MF |
941 | return status; |
942 | } | |
943 | ||
944 | /* Support function for ocfs2_delete_inode. Will help us keep the | |
945 | * inode data in a consistent state for clear_inode. Always truncates | |
946 | * pages, optionally sync's them first. */ | |
947 | static void ocfs2_cleanup_delete_inode(struct inode *inode, | |
948 | int sync_data) | |
949 | { | |
64f3b269 TM |
950 | trace_ocfs2_cleanup_delete_inode( |
951 | (unsigned long long)OCFS2_I(inode)->ip_blkno, sync_data); | |
ccd979bd | 952 | if (sync_data) |
249ec93c | 953 | filemap_write_and_wait(inode->i_mapping); |
ccd979bd MF |
954 | truncate_inode_pages(&inode->i_data, 0); |
955 | } | |
956 | ||
066d92dc | 957 | static void ocfs2_delete_inode(struct inode *inode) |
ccd979bd MF |
958 | { |
959 | int wipe, status; | |
e4b963f1 | 960 | sigset_t oldset; |
ccd979bd MF |
961 | struct buffer_head *di_bh = NULL; |
962 | ||
64f3b269 TM |
963 | trace_ocfs2_delete_inode(inode->i_ino, |
964 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
965 | is_bad_inode(inode)); | |
ccd979bd | 966 | |
a90714c1 JK |
967 | /* When we fail in read_inode() we mark inode as bad. The second test |
968 | * catches the case when inode allocation fails before allocating | |
969 | * a block for inode. */ | |
64f3b269 | 970 | if (is_bad_inode(inode) || !OCFS2_I(inode)->ip_blkno) |
ccd979bd | 971 | goto bail; |
ccd979bd | 972 | |
871a2931 | 973 | dquot_initialize(inode); |
907f4554 | 974 | |
ccd979bd MF |
975 | if (!ocfs2_inode_is_valid_to_delete(inode)) { |
976 | /* It's probably not necessary to truncate_inode_pages | |
977 | * here but we do it for safety anyway (it will most | |
978 | * likely be a no-op anyway) */ | |
979 | ocfs2_cleanup_delete_inode(inode, 0); | |
980 | goto bail; | |
981 | } | |
982 | ||
983 | /* We want to block signals in delete_inode as the lock and | |
984 | * messaging paths may return us -ERESTARTSYS. Which would | |
985 | * cause us to exit early, resulting in inodes being orphaned | |
986 | * forever. */ | |
e4b963f1 | 987 | ocfs2_block_signals(&oldset); |
ccd979bd | 988 | |
6ca497a8 | 989 | /* |
990 | * Synchronize us against ocfs2_get_dentry. We take this in | |
991 | * shared mode so that all nodes can still concurrently | |
992 | * process deletes. | |
993 | */ | |
994 | status = ocfs2_nfs_sync_lock(OCFS2_SB(inode->i_sb), 0); | |
995 | if (status < 0) { | |
996 | mlog(ML_ERROR, "getting nfs sync lock(PR) failed %d\n", status); | |
997 | ocfs2_cleanup_delete_inode(inode, 0); | |
998 | goto bail_unblock; | |
999 | } | |
ccd979bd MF |
1000 | /* Lock down the inode. This gives us an up to date view of |
1001 | * it's metadata (for verification), and allows us to | |
34d024f8 | 1002 | * serialize delete_inode on multiple nodes. |
ccd979bd MF |
1003 | * |
1004 | * Even though we might be doing a truncate, we don't take the | |
1005 | * allocation lock here as it won't be needed - nobody will | |
1006 | * have the file open. | |
1007 | */ | |
e63aecb6 | 1008 | status = ocfs2_inode_lock(inode, &di_bh, 1); |
ccd979bd MF |
1009 | if (status < 0) { |
1010 | if (status != -ENOENT) | |
1011 | mlog_errno(status); | |
1012 | ocfs2_cleanup_delete_inode(inode, 0); | |
6ca497a8 | 1013 | goto bail_unlock_nfs_sync; |
ccd979bd MF |
1014 | } |
1015 | ||
1016 | /* Query the cluster. This will be the final decision made | |
1017 | * before we go ahead and wipe the inode. */ | |
1018 | status = ocfs2_query_inode_wipe(inode, di_bh, &wipe); | |
1019 | if (!wipe || status < 0) { | |
34d024f8 | 1020 | /* Error and remote inode busy both mean we won't be |
ccd979bd MF |
1021 | * removing the inode, so they take almost the same |
1022 | * path. */ | |
1023 | if (status < 0) | |
1024 | mlog_errno(status); | |
1025 | ||
34d024f8 MF |
1026 | /* Someone in the cluster has disallowed a wipe of |
1027 | * this inode, or it was never completely | |
1028 | * orphaned. Write out the pages and exit now. */ | |
ccd979bd MF |
1029 | ocfs2_cleanup_delete_inode(inode, 1); |
1030 | goto bail_unlock_inode; | |
1031 | } | |
1032 | ||
1033 | ocfs2_cleanup_delete_inode(inode, 0); | |
1034 | ||
1035 | status = ocfs2_wipe_inode(inode, di_bh); | |
1036 | if (status < 0) { | |
b4df6ed8 MF |
1037 | if (status != -EDEADLK) |
1038 | mlog_errno(status); | |
ccd979bd MF |
1039 | goto bail_unlock_inode; |
1040 | } | |
1041 | ||
24c19ef4 MF |
1042 | /* |
1043 | * Mark the inode as successfully deleted. | |
1044 | * | |
1045 | * This is important for ocfs2_clear_inode() as it will check | |
1046 | * this flag and skip any checkpointing work | |
1047 | * | |
1048 | * ocfs2_stuff_meta_lvb() also uses this flag to invalidate | |
1049 | * the LVB for other nodes. | |
1050 | */ | |
ccd979bd MF |
1051 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_DELETED; |
1052 | ||
1053 | bail_unlock_inode: | |
e63aecb6 | 1054 | ocfs2_inode_unlock(inode, 1); |
ccd979bd | 1055 | brelse(di_bh); |
6ca497a8 | 1056 | |
1057 | bail_unlock_nfs_sync: | |
1058 | ocfs2_nfs_sync_unlock(OCFS2_SB(inode->i_sb), 0); | |
1059 | ||
ccd979bd | 1060 | bail_unblock: |
e4b963f1 | 1061 | ocfs2_unblock_signals(&oldset); |
ccd979bd | 1062 | bail: |
c1e8d35e | 1063 | return; |
ccd979bd MF |
1064 | } |
1065 | ||
066d92dc | 1066 | static void ocfs2_clear_inode(struct inode *inode) |
ccd979bd MF |
1067 | { |
1068 | int status; | |
1069 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
1070 | ||
dbd5768f | 1071 | clear_inode(inode); |
64f3b269 TM |
1072 | trace_ocfs2_clear_inode((unsigned long long)oi->ip_blkno, |
1073 | inode->i_nlink); | |
ccd979bd MF |
1074 | |
1075 | mlog_bug_on_msg(OCFS2_SB(inode->i_sb) == NULL, | |
1076 | "Inode=%lu\n", inode->i_ino); | |
1077 | ||
9f754758 | 1078 | dquot_drop(inode); |
257ba15c | 1079 | |
34d024f8 MF |
1080 | /* To preven remote deletes we hold open lock before, now it |
1081 | * is time to unlock PR and EX open locks. */ | |
50008630 TY |
1082 | ocfs2_open_unlock(inode); |
1083 | ||
ccd979bd | 1084 | /* Do these before all the other work so that we don't bounce |
34d024f8 | 1085 | * the downconvert thread while waiting to destroy the locks. */ |
ccd979bd | 1086 | ocfs2_mark_lockres_freeing(&oi->ip_rw_lockres); |
e63aecb6 | 1087 | ocfs2_mark_lockres_freeing(&oi->ip_inode_lockres); |
50008630 | 1088 | ocfs2_mark_lockres_freeing(&oi->ip_open_lockres); |
ccd979bd | 1089 | |
4fe370af MF |
1090 | ocfs2_resv_discard(&OCFS2_SB(inode->i_sb)->osb_la_resmap, |
1091 | &oi->ip_la_data_resv); | |
1092 | ocfs2_resv_init_once(&oi->ip_la_data_resv); | |
1093 | ||
ccd979bd MF |
1094 | /* We very well may get a clear_inode before all an inodes |
1095 | * metadata has hit disk. Of course, we can't drop any cluster | |
1096 | * locks until the journal has finished with it. The only | |
1097 | * exception here are successfully wiped inodes - their | |
1098 | * metadata can now be considered to be part of the system | |
1099 | * inodes from which it came. */ | |
1100 | if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED)) | |
1101 | ocfs2_checkpoint_inode(inode); | |
1102 | ||
1103 | mlog_bug_on_msg(!list_empty(&oi->ip_io_markers), | |
b0697053 MF |
1104 | "Clear inode of %llu, inode has io markers\n", |
1105 | (unsigned long long)oi->ip_blkno); | |
ccd979bd | 1106 | |
83418978 MF |
1107 | ocfs2_extent_map_trunc(inode, 0); |
1108 | ||
ccd979bd MF |
1109 | status = ocfs2_drop_inode_locks(inode); |
1110 | if (status < 0) | |
1111 | mlog_errno(status); | |
1112 | ||
1113 | ocfs2_lock_res_free(&oi->ip_rw_lockres); | |
e63aecb6 | 1114 | ocfs2_lock_res_free(&oi->ip_inode_lockres); |
50008630 | 1115 | ocfs2_lock_res_free(&oi->ip_open_lockres); |
ccd979bd | 1116 | |
66fb345d | 1117 | ocfs2_metadata_cache_exit(INODE_CACHE(inode)); |
ccd979bd | 1118 | |
8cb471e8 | 1119 | mlog_bug_on_msg(INODE_CACHE(inode)->ci_num_cached, |
b0697053 | 1120 | "Clear inode of %llu, inode has %u cache items\n", |
8cb471e8 JB |
1121 | (unsigned long long)oi->ip_blkno, |
1122 | INODE_CACHE(inode)->ci_num_cached); | |
ccd979bd | 1123 | |
8cb471e8 | 1124 | mlog_bug_on_msg(!(INODE_CACHE(inode)->ci_flags & OCFS2_CACHE_FL_INLINE), |
b0697053 MF |
1125 | "Clear inode of %llu, inode has a bad flag\n", |
1126 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
1127 | |
1128 | mlog_bug_on_msg(spin_is_locked(&oi->ip_lock), | |
b0697053 MF |
1129 | "Clear inode of %llu, inode is locked\n", |
1130 | (unsigned long long)oi->ip_blkno); | |
ccd979bd | 1131 | |
251b6ecc | 1132 | mlog_bug_on_msg(!mutex_trylock(&oi->ip_io_mutex), |
b0697053 MF |
1133 | "Clear inode of %llu, io_mutex is locked\n", |
1134 | (unsigned long long)oi->ip_blkno); | |
251b6ecc | 1135 | mutex_unlock(&oi->ip_io_mutex); |
ccd979bd MF |
1136 | |
1137 | /* | |
1138 | * down_trylock() returns 0, down_write_trylock() returns 1 | |
1139 | * kernel 1, world 0 | |
1140 | */ | |
1141 | mlog_bug_on_msg(!down_write_trylock(&oi->ip_alloc_sem), | |
b0697053 MF |
1142 | "Clear inode of %llu, alloc_sem is locked\n", |
1143 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
1144 | up_write(&oi->ip_alloc_sem); |
1145 | ||
1146 | mlog_bug_on_msg(oi->ip_open_count, | |
b0697053 MF |
1147 | "Clear inode of %llu has open count %d\n", |
1148 | (unsigned long long)oi->ip_blkno, oi->ip_open_count); | |
ccd979bd MF |
1149 | |
1150 | /* Clear all other flags. */ | |
47460d65 | 1151 | oi->ip_flags = 0; |
ccd979bd MF |
1152 | oi->ip_dir_start_lookup = 0; |
1153 | oi->ip_blkno = 0ULL; | |
ae0dff68 SM |
1154 | |
1155 | /* | |
1156 | * ip_jinode is used to track txns against this inode. We ensure that | |
1157 | * the journal is flushed before journal shutdown. Thus it is safe to | |
1158 | * have inodes get cleaned up after journal shutdown. | |
1159 | */ | |
2b4e30fb JB |
1160 | jbd2_journal_release_jbd_inode(OCFS2_SB(inode->i_sb)->journal->j_journal, |
1161 | &oi->ip_jinode); | |
ccd979bd MF |
1162 | } |
1163 | ||
066d92dc AV |
1164 | void ocfs2_evict_inode(struct inode *inode) |
1165 | { | |
1166 | if (!inode->i_nlink || | |
1167 | (OCFS2_I(inode)->ip_flags & OCFS2_INODE_MAYBE_ORPHANED)) { | |
1168 | ocfs2_delete_inode(inode); | |
1169 | } else { | |
1170 | truncate_inode_pages(&inode->i_data, 0); | |
1171 | } | |
1172 | ocfs2_clear_inode(inode); | |
1173 | } | |
1174 | ||
ccd979bd MF |
1175 | /* Called under inode_lock, with no more references on the |
1176 | * struct inode, so it's safe here to check the flags field | |
1177 | * and to manipulate i_nlink without any other locks. */ | |
45321ac5 | 1178 | int ocfs2_drop_inode(struct inode *inode) |
ccd979bd MF |
1179 | { |
1180 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
45321ac5 | 1181 | int res; |
ccd979bd | 1182 | |
64f3b269 TM |
1183 | trace_ocfs2_drop_inode((unsigned long long)oi->ip_blkno, |
1184 | inode->i_nlink, oi->ip_flags); | |
ccd979bd | 1185 | |
379dfe9d | 1186 | if (oi->ip_flags & OCFS2_INODE_MAYBE_ORPHANED) |
45321ac5 | 1187 | res = 1; |
379dfe9d | 1188 | else |
45321ac5 | 1189 | res = generic_drop_inode(inode); |
ccd979bd | 1190 | |
45321ac5 | 1191 | return res; |
ccd979bd MF |
1192 | } |
1193 | ||
ccd979bd MF |
1194 | /* |
1195 | * This is called from our getattr. | |
1196 | */ | |
1197 | int ocfs2_inode_revalidate(struct dentry *dentry) | |
1198 | { | |
1199 | struct inode *inode = dentry->d_inode; | |
1200 | int status = 0; | |
1201 | ||
64f3b269 TM |
1202 | trace_ocfs2_inode_revalidate(inode, |
1203 | inode ? (unsigned long long)OCFS2_I(inode)->ip_blkno : 0ULL, | |
1204 | inode ? (unsigned long long)OCFS2_I(inode)->ip_flags : 0); | |
ccd979bd MF |
1205 | |
1206 | if (!inode) { | |
ccd979bd MF |
1207 | status = -ENOENT; |
1208 | goto bail; | |
1209 | } | |
1210 | ||
1211 | spin_lock(&OCFS2_I(inode)->ip_lock); | |
1212 | if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED) { | |
1213 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
ccd979bd MF |
1214 | status = -ENOENT; |
1215 | goto bail; | |
1216 | } | |
1217 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
1218 | ||
e63aecb6 | 1219 | /* Let ocfs2_inode_lock do the work of updating our struct |
ccd979bd | 1220 | * inode for us. */ |
e63aecb6 | 1221 | status = ocfs2_inode_lock(inode, NULL, 0); |
ccd979bd MF |
1222 | if (status < 0) { |
1223 | if (status != -ENOENT) | |
1224 | mlog_errno(status); | |
1225 | goto bail; | |
1226 | } | |
e63aecb6 | 1227 | ocfs2_inode_unlock(inode, 0); |
ccd979bd | 1228 | bail: |
ccd979bd MF |
1229 | return status; |
1230 | } | |
1231 | ||
1232 | /* | |
1233 | * Updates a disk inode from a | |
1234 | * struct inode. | |
1235 | * Only takes ip_lock. | |
1236 | */ | |
1fabe148 | 1237 | int ocfs2_mark_inode_dirty(handle_t *handle, |
ccd979bd MF |
1238 | struct inode *inode, |
1239 | struct buffer_head *bh) | |
1240 | { | |
1241 | int status; | |
1242 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) bh->b_data; | |
1243 | ||
64f3b269 | 1244 | trace_ocfs2_mark_inode_dirty((unsigned long long)OCFS2_I(inode)->ip_blkno); |
ccd979bd | 1245 | |
0cf2f763 | 1246 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), bh, |
13723d00 | 1247 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1248 | if (status < 0) { |
1249 | mlog_errno(status); | |
1250 | goto leave; | |
1251 | } | |
1252 | ||
1253 | spin_lock(&OCFS2_I(inode)->ip_lock); | |
1254 | fe->i_clusters = cpu_to_le32(OCFS2_I(inode)->ip_clusters); | |
6e4b0d56 | 1255 | ocfs2_get_inode_flags(OCFS2_I(inode)); |
ca4d147e | 1256 | fe->i_attr = cpu_to_le32(OCFS2_I(inode)->ip_attr); |
15b1e36b | 1257 | fe->i_dyn_features = cpu_to_le16(OCFS2_I(inode)->ip_dyn_features); |
ccd979bd MF |
1258 | spin_unlock(&OCFS2_I(inode)->ip_lock); |
1259 | ||
1260 | fe->i_size = cpu_to_le64(i_size_read(inode)); | |
198a1ca3 | 1261 | ocfs2_set_links_count(fe, inode->i_nlink); |
ccd979bd MF |
1262 | fe->i_uid = cpu_to_le32(inode->i_uid); |
1263 | fe->i_gid = cpu_to_le32(inode->i_gid); | |
1264 | fe->i_mode = cpu_to_le16(inode->i_mode); | |
1265 | fe->i_atime = cpu_to_le64(inode->i_atime.tv_sec); | |
1266 | fe->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); | |
1267 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); | |
1268 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
1269 | fe->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec); | |
1270 | fe->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); | |
1271 | ||
ec20cec7 | 1272 | ocfs2_journal_dirty(handle, bh); |
ccd979bd | 1273 | leave: |
ccd979bd MF |
1274 | return status; |
1275 | } | |
1276 | ||
1277 | /* | |
1278 | * | |
1279 | * Updates a struct inode from a disk inode. | |
1280 | * does no i/o, only takes ip_lock. | |
1281 | */ | |
1282 | void ocfs2_refresh_inode(struct inode *inode, | |
1283 | struct ocfs2_dinode *fe) | |
1284 | { | |
ccd979bd MF |
1285 | spin_lock(&OCFS2_I(inode)->ip_lock); |
1286 | ||
1287 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); | |
ca4d147e | 1288 | OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr); |
15b1e36b | 1289 | OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features); |
ca4d147e | 1290 | ocfs2_set_inode_flags(inode); |
ccd979bd | 1291 | i_size_write(inode, le64_to_cpu(fe->i_size)); |
bfe86848 | 1292 | set_nlink(inode, ocfs2_read_links_count(fe)); |
ccd979bd MF |
1293 | inode->i_uid = le32_to_cpu(fe->i_uid); |
1294 | inode->i_gid = le32_to_cpu(fe->i_gid); | |
1295 | inode->i_mode = le16_to_cpu(fe->i_mode); | |
ccd979bd MF |
1296 | if (S_ISLNK(inode->i_mode) && le32_to_cpu(fe->i_clusters) == 0) |
1297 | inode->i_blocks = 0; | |
1298 | else | |
8110b073 | 1299 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd MF |
1300 | inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime); |
1301 | inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec); | |
1302 | inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime); | |
1303 | inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec); | |
1304 | inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime); | |
1305 | inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec); | |
1306 | ||
1307 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
1308 | } | |
b657c95c JB |
1309 | |
1310 | int ocfs2_validate_inode_block(struct super_block *sb, | |
1311 | struct buffer_head *bh) | |
1312 | { | |
d6b32bbb | 1313 | int rc; |
b657c95c JB |
1314 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data; |
1315 | ||
64f3b269 | 1316 | trace_ocfs2_validate_inode_block((unsigned long long)bh->b_blocknr); |
970e4936 | 1317 | |
b657c95c JB |
1318 | BUG_ON(!buffer_uptodate(bh)); |
1319 | ||
d6b32bbb JB |
1320 | /* |
1321 | * If the ecc fails, we return the error but otherwise | |
1322 | * leave the filesystem running. We know any error is | |
1323 | * local to this block. | |
1324 | */ | |
1325 | rc = ocfs2_validate_meta_ecc(sb, bh->b_data, &di->i_check); | |
13723d00 JB |
1326 | if (rc) { |
1327 | mlog(ML_ERROR, "Checksum failed for dinode %llu\n", | |
1328 | (unsigned long long)bh->b_blocknr); | |
d6b32bbb | 1329 | goto bail; |
13723d00 | 1330 | } |
d6b32bbb JB |
1331 | |
1332 | /* | |
1333 | * Errors after here are fatal. | |
1334 | */ | |
1335 | ||
1336 | rc = -EINVAL; | |
1337 | ||
b657c95c JB |
1338 | if (!OCFS2_IS_VALID_DINODE(di)) { |
1339 | ocfs2_error(sb, "Invalid dinode #%llu: signature = %.*s\n", | |
1340 | (unsigned long long)bh->b_blocknr, 7, | |
1341 | di->i_signature); | |
1342 | goto bail; | |
1343 | } | |
1344 | ||
1345 | if (le64_to_cpu(di->i_blkno) != bh->b_blocknr) { | |
1346 | ocfs2_error(sb, "Invalid dinode #%llu: i_blkno is %llu\n", | |
1347 | (unsigned long long)bh->b_blocknr, | |
1348 | (unsigned long long)le64_to_cpu(di->i_blkno)); | |
1349 | goto bail; | |
1350 | } | |
1351 | ||
1352 | if (!(di->i_flags & cpu_to_le32(OCFS2_VALID_FL))) { | |
1353 | ocfs2_error(sb, | |
1354 | "Invalid dinode #%llu: OCFS2_VALID_FL not set\n", | |
1355 | (unsigned long long)bh->b_blocknr); | |
1356 | goto bail; | |
1357 | } | |
1358 | ||
1359 | if (le32_to_cpu(di->i_fs_generation) != | |
1360 | OCFS2_SB(sb)->fs_generation) { | |
1361 | ocfs2_error(sb, | |
1362 | "Invalid dinode #%llu: fs_generation is %u\n", | |
1363 | (unsigned long long)bh->b_blocknr, | |
1364 | le32_to_cpu(di->i_fs_generation)); | |
1365 | goto bail; | |
1366 | } | |
1367 | ||
1368 | rc = 0; | |
1369 | ||
1370 | bail: | |
1371 | return rc; | |
1372 | } | |
1373 | ||
1374 | int ocfs2_read_inode_block_full(struct inode *inode, struct buffer_head **bh, | |
1375 | int flags) | |
1376 | { | |
1377 | int rc; | |
1378 | struct buffer_head *tmp = *bh; | |
1379 | ||
8cb471e8 JB |
1380 | rc = ocfs2_read_blocks(INODE_CACHE(inode), OCFS2_I(inode)->ip_blkno, |
1381 | 1, &tmp, flags, ocfs2_validate_inode_block); | |
b657c95c JB |
1382 | |
1383 | /* If ocfs2_read_blocks() got us a new bh, pass it up. */ | |
970e4936 | 1384 | if (!rc && !*bh) |
b657c95c JB |
1385 | *bh = tmp; |
1386 | ||
b657c95c JB |
1387 | return rc; |
1388 | } | |
1389 | ||
1390 | int ocfs2_read_inode_block(struct inode *inode, struct buffer_head **bh) | |
1391 | { | |
1392 | return ocfs2_read_inode_block_full(inode, bh, 0); | |
1393 | } | |
6e5a3d75 | 1394 | |
6e5a3d75 JB |
1395 | |
1396 | static u64 ocfs2_inode_cache_owner(struct ocfs2_caching_info *ci) | |
1397 | { | |
1398 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1399 | ||
1400 | return oi->ip_blkno; | |
1401 | } | |
1402 | ||
8cb471e8 JB |
1403 | static struct super_block *ocfs2_inode_cache_get_super(struct ocfs2_caching_info *ci) |
1404 | { | |
1405 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1406 | ||
1407 | return oi->vfs_inode.i_sb; | |
1408 | } | |
1409 | ||
6e5a3d75 JB |
1410 | static void ocfs2_inode_cache_lock(struct ocfs2_caching_info *ci) |
1411 | { | |
1412 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1413 | ||
1414 | spin_lock(&oi->ip_lock); | |
1415 | } | |
1416 | ||
1417 | static void ocfs2_inode_cache_unlock(struct ocfs2_caching_info *ci) | |
1418 | { | |
1419 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1420 | ||
1421 | spin_unlock(&oi->ip_lock); | |
1422 | } | |
1423 | ||
1424 | static void ocfs2_inode_cache_io_lock(struct ocfs2_caching_info *ci) | |
1425 | { | |
1426 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1427 | ||
1428 | mutex_lock(&oi->ip_io_mutex); | |
1429 | } | |
1430 | ||
1431 | static void ocfs2_inode_cache_io_unlock(struct ocfs2_caching_info *ci) | |
1432 | { | |
1433 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1434 | ||
1435 | mutex_unlock(&oi->ip_io_mutex); | |
1436 | } | |
1437 | ||
1438 | const struct ocfs2_caching_operations ocfs2_inode_caching_ops = { | |
1439 | .co_owner = ocfs2_inode_cache_owner, | |
8cb471e8 | 1440 | .co_get_super = ocfs2_inode_cache_get_super, |
6e5a3d75 JB |
1441 | .co_cache_lock = ocfs2_inode_cache_lock, |
1442 | .co_cache_unlock = ocfs2_inode_cache_unlock, | |
1443 | .co_io_lock = ocfs2_inode_cache_io_lock, | |
1444 | .co_io_unlock = ocfs2_inode_cache_io_unlock, | |
1445 | }; | |
1446 |