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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> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/highmem.h> | |
30 | #include <linux/pagemap.h> | |
a90714c1 | 31 | #include <linux/quotaops.h> |
ccd979bd MF |
32 | |
33 | #include <asm/byteorder.h> | |
34 | ||
35 | #define MLOG_MASK_PREFIX ML_INODE | |
36 | #include <cluster/masklog.h> | |
37 | ||
38 | #include "ocfs2.h" | |
39 | ||
40 | #include "alloc.h" | |
9b7895ef | 41 | #include "dir.h" |
d6b32bbb | 42 | #include "blockcheck.h" |
ccd979bd MF |
43 | #include "dlmglue.h" |
44 | #include "extent_map.h" | |
45 | #include "file.h" | |
b4df6ed8 | 46 | #include "heartbeat.h" |
ccd979bd MF |
47 | #include "inode.h" |
48 | #include "journal.h" | |
49 | #include "namei.h" | |
50 | #include "suballoc.h" | |
51 | #include "super.h" | |
52 | #include "symlink.h" | |
53 | #include "sysfile.h" | |
54 | #include "uptodate.h" | |
cf1d6c76 | 55 | #include "xattr.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 | ||
5fa0613e JK |
116 | struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 blkno, unsigned flags, |
117 | int sysfile_type) | |
ccd979bd MF |
118 | { |
119 | struct inode *inode = NULL; | |
120 | struct super_block *sb = osb->sb; | |
121 | struct ocfs2_find_inode_args args; | |
122 | ||
b0697053 | 123 | mlog_entry("(blkno = %llu)\n", (unsigned long long)blkno); |
ccd979bd MF |
124 | |
125 | /* Ok. By now we've either got the offsets passed to us by the | |
126 | * caller, or we just pulled them off the bh. Lets do some | |
127 | * sanity checks to make sure they're OK. */ | |
128 | if (blkno == 0) { | |
129 | inode = ERR_PTR(-EINVAL); | |
130 | mlog_errno(PTR_ERR(inode)); | |
131 | goto bail; | |
132 | } | |
133 | ||
134 | args.fi_blkno = blkno; | |
24c19ef4 | 135 | args.fi_flags = flags; |
ccd979bd | 136 | args.fi_ino = ino_from_blkno(sb, blkno); |
5fa0613e | 137 | args.fi_sysfile_type = sysfile_type; |
ccd979bd MF |
138 | |
139 | inode = iget5_locked(sb, args.fi_ino, ocfs2_find_actor, | |
140 | ocfs2_init_locked_inode, &args); | |
141 | /* inode was *not* in the inode cache. 2.6.x requires | |
142 | * us to do our own read_inode call and unlock it | |
143 | * afterwards. */ | |
144 | if (inode && inode->i_state & I_NEW) { | |
145 | mlog(0, "Inode was not in inode cache, reading it.\n"); | |
146 | ocfs2_read_locked_inode(inode, &args); | |
147 | unlock_new_inode(inode); | |
148 | } | |
149 | if (inode == NULL) { | |
150 | inode = ERR_PTR(-ENOMEM); | |
151 | mlog_errno(PTR_ERR(inode)); | |
152 | goto bail; | |
153 | } | |
154 | if (is_bad_inode(inode)) { | |
155 | iput(inode); | |
156 | inode = ERR_PTR(-ESTALE); | |
ccd979bd MF |
157 | goto bail; |
158 | } | |
159 | ||
160 | bail: | |
161 | if (!IS_ERR(inode)) { | |
b0697053 MF |
162 | mlog(0, "returning inode with number %llu\n", |
163 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 164 | mlog_exit_ptr(inode); |
6a1bd4a5 | 165 | } |
ccd979bd MF |
166 | |
167 | return inode; | |
168 | } | |
169 | ||
170 | ||
171 | /* | |
172 | * here's how inodes get read from disk: | |
173 | * iget5_locked -> find_actor -> OCFS2_FIND_ACTOR | |
174 | * found? : return the in-memory inode | |
175 | * not found? : get_new_inode -> OCFS2_INIT_LOCKED_INODE | |
176 | */ | |
177 | ||
178 | static int ocfs2_find_actor(struct inode *inode, void *opaque) | |
179 | { | |
180 | struct ocfs2_find_inode_args *args = NULL; | |
181 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
182 | int ret = 0; | |
183 | ||
184 | mlog_entry("(0x%p, %lu, 0x%p)\n", inode, inode->i_ino, opaque); | |
185 | ||
186 | args = opaque; | |
187 | ||
188 | mlog_bug_on_msg(!inode, "No inode in find actor!\n"); | |
189 | ||
190 | if (oi->ip_blkno != args->fi_blkno) | |
191 | goto bail; | |
192 | ||
ccd979bd MF |
193 | ret = 1; |
194 | bail: | |
195 | mlog_exit(ret); | |
196 | return ret; | |
197 | } | |
198 | ||
199 | /* | |
200 | * initialize the new inode, but don't do anything that would cause | |
201 | * us to sleep. | |
202 | * return 0 on success, 1 on failure | |
203 | */ | |
204 | static int ocfs2_init_locked_inode(struct inode *inode, void *opaque) | |
205 | { | |
206 | struct ocfs2_find_inode_args *args = opaque; | |
207 | ||
208 | mlog_entry("inode = %p, opaque = %p\n", inode, opaque); | |
209 | ||
210 | inode->i_ino = args->fi_ino; | |
211 | OCFS2_I(inode)->ip_blkno = args->fi_blkno; | |
5fa0613e JK |
212 | if (args->fi_sysfile_type != 0) |
213 | lockdep_set_class(&inode->i_mutex, | |
214 | &ocfs2_sysfile_lock_key[args->fi_sysfile_type]); | |
ccd979bd MF |
215 | |
216 | mlog_exit(0); | |
217 | return 0; | |
218 | } | |
219 | ||
b657c95c JB |
220 | void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe, |
221 | int create_ino) | |
ccd979bd MF |
222 | { |
223 | struct super_block *sb; | |
224 | struct ocfs2_super *osb; | |
53da4939 | 225 | int use_plocks = 1; |
ccd979bd | 226 | |
b0697053 | 227 | mlog_entry("(0x%p, size:%llu)\n", inode, |
1ca1a111 | 228 | (unsigned long long)le64_to_cpu(fe->i_size)); |
ccd979bd MF |
229 | |
230 | sb = inode->i_sb; | |
231 | osb = OCFS2_SB(sb); | |
232 | ||
53da4939 MF |
233 | if ((osb->s_mount_opt & OCFS2_MOUNT_LOCALFLOCKS) || |
234 | ocfs2_mount_local(osb) || !ocfs2_stack_supports_plocks()) | |
235 | use_plocks = 0; | |
236 | ||
b657c95c JB |
237 | /* |
238 | * These have all been checked by ocfs2_read_inode_block() or set | |
239 | * by ocfs2_mknod_locked(), so a failure is a code bug. | |
240 | */ | |
241 | BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); /* This means that read_inode | |
242 | cannot create a superblock | |
243 | inode today. change if | |
244 | that is needed. */ | |
245 | BUG_ON(!(fe->i_flags & cpu_to_le32(OCFS2_VALID_FL))); | |
246 | BUG_ON(le32_to_cpu(fe->i_fs_generation) != osb->fs_generation); | |
ccd979bd | 247 | |
ccd979bd | 248 | |
8110b073 MF |
249 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); |
250 | OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr); | |
15b1e36b | 251 | OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features); |
8110b073 | 252 | |
ccd979bd MF |
253 | inode->i_version = 1; |
254 | inode->i_generation = le32_to_cpu(fe->i_generation); | |
255 | inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev)); | |
256 | inode->i_mode = le16_to_cpu(fe->i_mode); | |
257 | inode->i_uid = le32_to_cpu(fe->i_uid); | |
258 | inode->i_gid = le32_to_cpu(fe->i_gid); | |
ccd979bd MF |
259 | |
260 | /* Fast symlinks will have i_size but no allocated clusters. */ | |
261 | if (S_ISLNK(inode->i_mode) && !fe->i_clusters) | |
262 | inode->i_blocks = 0; | |
263 | else | |
8110b073 | 264 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd | 265 | inode->i_mapping->a_ops = &ocfs2_aops; |
ccd979bd MF |
266 | inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime); |
267 | inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec); | |
268 | inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime); | |
269 | inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec); | |
270 | inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime); | |
271 | inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec); | |
272 | ||
273 | if (OCFS2_I(inode)->ip_blkno != le64_to_cpu(fe->i_blkno)) | |
274 | mlog(ML_ERROR, | |
b0697053 MF |
275 | "ip_blkno %llu != i_blkno %llu!\n", |
276 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
1ca1a111 | 277 | (unsigned long long)le64_to_cpu(fe->i_blkno)); |
ccd979bd | 278 | |
198a1ca3 | 279 | inode->i_nlink = ocfs2_read_links_count(fe); |
ccd979bd | 280 | |
bbbd0eb3 | 281 | if (fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) { |
24c19ef4 | 282 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SYSTEM_FILE; |
bbbd0eb3 JK |
283 | inode->i_flags |= S_NOQUOTA; |
284 | } | |
24c19ef4 | 285 | |
ccd979bd MF |
286 | if (fe->i_flags & cpu_to_le32(OCFS2_LOCAL_ALLOC_FL)) { |
287 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP; | |
288 | mlog(0, "local alloc inode: i_ino=%lu\n", inode->i_ino); | |
289 | } else if (fe->i_flags & cpu_to_le32(OCFS2_BITMAP_FL)) { | |
290 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP; | |
1a224ad1 JK |
291 | } else if (fe->i_flags & cpu_to_le32(OCFS2_QUOTA_FL)) { |
292 | inode->i_flags |= S_NOQUOTA; | |
ccd979bd MF |
293 | } else if (fe->i_flags & cpu_to_le32(OCFS2_SUPER_BLOCK_FL)) { |
294 | mlog(0, "superblock inode: i_ino=%lu\n", inode->i_ino); | |
295 | /* we can't actually hit this as read_inode can't | |
296 | * handle superblocks today ;-) */ | |
297 | BUG(); | |
298 | } | |
299 | ||
300 | switch (inode->i_mode & S_IFMT) { | |
301 | case S_IFREG: | |
53da4939 MF |
302 | if (use_plocks) |
303 | inode->i_fop = &ocfs2_fops; | |
304 | else | |
305 | inode->i_fop = &ocfs2_fops_no_plocks; | |
ccd979bd MF |
306 | inode->i_op = &ocfs2_file_iops; |
307 | i_size_write(inode, le64_to_cpu(fe->i_size)); | |
308 | break; | |
309 | case S_IFDIR: | |
310 | inode->i_op = &ocfs2_dir_iops; | |
53da4939 MF |
311 | if (use_plocks) |
312 | inode->i_fop = &ocfs2_dops; | |
313 | else | |
314 | inode->i_fop = &ocfs2_dops_no_plocks; | |
ccd979bd MF |
315 | i_size_write(inode, le64_to_cpu(fe->i_size)); |
316 | break; | |
317 | case S_IFLNK: | |
318 | if (ocfs2_inode_is_fast_symlink(inode)) | |
319 | inode->i_op = &ocfs2_fast_symlink_inode_operations; | |
320 | else | |
321 | inode->i_op = &ocfs2_symlink_inode_operations; | |
322 | i_size_write(inode, le64_to_cpu(fe->i_size)); | |
323 | break; | |
324 | default: | |
325 | inode->i_op = &ocfs2_special_file_iops; | |
326 | init_special_inode(inode, inode->i_mode, | |
327 | inode->i_rdev); | |
328 | break; | |
329 | } | |
330 | ||
24c19ef4 MF |
331 | if (create_ino) { |
332 | inode->i_ino = ino_from_blkno(inode->i_sb, | |
333 | le64_to_cpu(fe->i_blkno)); | |
334 | ||
335 | /* | |
336 | * If we ever want to create system files from kernel, | |
337 | * the generation argument to | |
338 | * ocfs2_inode_lock_res_init() will have to change. | |
339 | */ | |
1ca1a111 | 340 | BUG_ON(le32_to_cpu(fe->i_flags) & OCFS2_SYSTEM_FL); |
24c19ef4 | 341 | |
e63aecb6 | 342 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_inode_lockres, |
24c19ef4 | 343 | OCFS2_LOCK_TYPE_META, 0, inode); |
50008630 TY |
344 | |
345 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres, | |
346 | OCFS2_LOCK_TYPE_OPEN, 0, inode); | |
24c19ef4 MF |
347 | } |
348 | ||
ccd979bd | 349 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_rw_lockres, |
24c19ef4 MF |
350 | OCFS2_LOCK_TYPE_RW, inode->i_generation, |
351 | inode); | |
352 | ||
ca4d147e | 353 | ocfs2_set_inode_flags(inode); |
ca4d147e | 354 | |
13821151 TM |
355 | OCFS2_I(inode)->ip_last_used_slot = 0; |
356 | OCFS2_I(inode)->ip_last_used_group = 0; | |
b657c95c | 357 | mlog_exit_void(); |
ccd979bd MF |
358 | } |
359 | ||
360 | static int ocfs2_read_locked_inode(struct inode *inode, | |
361 | struct ocfs2_find_inode_args *args) | |
362 | { | |
363 | struct super_block *sb; | |
364 | struct ocfs2_super *osb; | |
365 | struct ocfs2_dinode *fe; | |
366 | struct buffer_head *bh = NULL; | |
24c19ef4 MF |
367 | int status, can_lock; |
368 | u32 generation = 0; | |
ccd979bd MF |
369 | |
370 | mlog_entry("(0x%p, 0x%p)\n", inode, args); | |
371 | ||
372 | status = -EINVAL; | |
373 | if (inode == NULL || inode->i_sb == NULL) { | |
374 | mlog(ML_ERROR, "bad inode\n"); | |
24c19ef4 | 375 | return status; |
ccd979bd MF |
376 | } |
377 | sb = inode->i_sb; | |
378 | osb = OCFS2_SB(sb); | |
379 | ||
380 | if (!args) { | |
381 | mlog(ML_ERROR, "bad inode args\n"); | |
382 | make_bad_inode(inode); | |
24c19ef4 MF |
383 | return status; |
384 | } | |
385 | ||
386 | /* | |
387 | * To improve performance of cold-cache inode stats, we take | |
388 | * the cluster lock here if possible. | |
389 | * | |
390 | * Generally, OCFS2 never trusts the contents of an inode | |
391 | * unless it's holding a cluster lock, so taking it here isn't | |
392 | * a correctness issue as much as it is a performance | |
393 | * improvement. | |
394 | * | |
395 | * There are three times when taking the lock is not a good idea: | |
396 | * | |
397 | * 1) During startup, before we have initialized the DLM. | |
398 | * | |
399 | * 2) If we are reading certain system files which never get | |
400 | * cluster locks (local alloc, truncate log). | |
401 | * | |
402 | * 3) If the process doing the iget() is responsible for | |
403 | * orphan dir recovery. We're holding the orphan dir lock and | |
404 | * can get into a deadlock with another process on another | |
405 | * node in ->delete_inode(). | |
406 | * | |
407 | * #1 and #2 can be simply solved by never taking the lock | |
408 | * here for system files (which are the only type we read | |
409 | * during mount). It's a heavier approach, but our main | |
410 | * concern is user-accesible files anyway. | |
411 | * | |
412 | * #3 works itself out because we'll eventually take the | |
413 | * cluster lock before trusting anything anyway. | |
414 | */ | |
415 | can_lock = !(args->fi_flags & OCFS2_FI_FLAG_SYSFILE) | |
50008630 | 416 | && !(args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY) |
c271c5c2 | 417 | && !ocfs2_mount_local(osb); |
24c19ef4 MF |
418 | |
419 | /* | |
420 | * To maintain backwards compatibility with older versions of | |
421 | * ocfs2-tools, we still store the generation value for system | |
422 | * files. The only ones that actually matter to userspace are | |
423 | * the journals, but it's easier and inexpensive to just flag | |
424 | * all system files similarly. | |
425 | */ | |
426 | if (args->fi_flags & OCFS2_FI_FLAG_SYSFILE) | |
427 | generation = osb->fs_generation; | |
428 | ||
e63aecb6 | 429 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_inode_lockres, |
24c19ef4 MF |
430 | OCFS2_LOCK_TYPE_META, |
431 | generation, inode); | |
432 | ||
50008630 TY |
433 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres, |
434 | OCFS2_LOCK_TYPE_OPEN, | |
435 | 0, inode); | |
436 | ||
24c19ef4 | 437 | if (can_lock) { |
50008630 TY |
438 | status = ocfs2_open_lock(inode); |
439 | if (status) { | |
440 | make_bad_inode(inode); | |
441 | mlog_errno(status); | |
442 | return status; | |
443 | } | |
e63aecb6 | 444 | status = ocfs2_inode_lock(inode, NULL, 0); |
24c19ef4 MF |
445 | if (status) { |
446 | make_bad_inode(inode); | |
447 | mlog_errno(status); | |
448 | return status; | |
449 | } | |
ccd979bd MF |
450 | } |
451 | ||
50008630 TY |
452 | if (args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY) { |
453 | status = ocfs2_try_open_lock(inode, 0); | |
454 | if (status) { | |
455 | make_bad_inode(inode); | |
456 | return status; | |
457 | } | |
458 | } | |
459 | ||
b657c95c JB |
460 | if (can_lock) { |
461 | status = ocfs2_read_inode_block_full(inode, &bh, | |
462 | OCFS2_BH_IGNORE_CACHE); | |
463 | } else { | |
da1e9098 | 464 | status = ocfs2_read_blocks_sync(osb, args->fi_blkno, 1, &bh); |
b657c95c JB |
465 | if (!status) |
466 | status = ocfs2_validate_inode_block(osb->sb, bh); | |
467 | } | |
ccd979bd MF |
468 | if (status < 0) { |
469 | mlog_errno(status); | |
ccd979bd MF |
470 | goto bail; |
471 | } | |
472 | ||
24c19ef4 | 473 | status = -EINVAL; |
ccd979bd | 474 | fe = (struct ocfs2_dinode *) bh->b_data; |
ccd979bd | 475 | |
24c19ef4 MF |
476 | /* |
477 | * This is a code bug. Right now the caller needs to | |
478 | * understand whether it is asking for a system file inode or | |
479 | * not so the proper lock names can be built. | |
480 | */ | |
481 | mlog_bug_on_msg(!!(fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) != | |
482 | !!(args->fi_flags & OCFS2_FI_FLAG_SYSFILE), | |
483 | "Inode %llu: system file state is ambigous\n", | |
484 | (unsigned long long)args->fi_blkno); | |
ccd979bd MF |
485 | |
486 | if (S_ISCHR(le16_to_cpu(fe->i_mode)) || | |
487 | S_ISBLK(le16_to_cpu(fe->i_mode))) | |
b657c95c | 488 | inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev)); |
ccd979bd | 489 | |
b657c95c | 490 | ocfs2_populate_inode(inode, fe, 0); |
ccd979bd MF |
491 | |
492 | BUG_ON(args->fi_blkno != le64_to_cpu(fe->i_blkno)); | |
493 | ||
ccd979bd MF |
494 | status = 0; |
495 | ||
496 | bail: | |
24c19ef4 | 497 | if (can_lock) |
e63aecb6 | 498 | ocfs2_inode_unlock(inode, 0); |
24c19ef4 MF |
499 | |
500 | if (status < 0) | |
501 | make_bad_inode(inode); | |
502 | ||
ccd979bd MF |
503 | if (args && bh) |
504 | brelse(bh); | |
505 | ||
506 | mlog_exit(status); | |
507 | return status; | |
508 | } | |
509 | ||
510 | void ocfs2_sync_blockdev(struct super_block *sb) | |
511 | { | |
512 | sync_blockdev(sb->s_bdev); | |
513 | } | |
514 | ||
515 | static int ocfs2_truncate_for_delete(struct ocfs2_super *osb, | |
516 | struct inode *inode, | |
517 | struct buffer_head *fe_bh) | |
518 | { | |
519 | int status = 0; | |
ccd979bd MF |
520 | struct ocfs2_truncate_context *tc = NULL; |
521 | struct ocfs2_dinode *fe; | |
60b11392 | 522 | handle_t *handle = NULL; |
ccd979bd MF |
523 | |
524 | mlog_entry_void(); | |
525 | ||
526 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
527 | ||
1afc32b9 MF |
528 | /* |
529 | * This check will also skip truncate of inodes with inline | |
530 | * data and fast symlinks. | |
531 | */ | |
3a0782d0 | 532 | if (fe->i_clusters) { |
2b4e30fb JB |
533 | if (ocfs2_should_order_data(inode)) |
534 | ocfs2_begin_ordered_truncate(inode, 0); | |
535 | ||
60b11392 MF |
536 | handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); |
537 | if (IS_ERR(handle)) { | |
538 | status = PTR_ERR(handle); | |
539 | mlog_errno(status); | |
540 | goto out; | |
541 | } | |
542 | ||
13723d00 JB |
543 | status = ocfs2_journal_access_di(handle, inode, fe_bh, |
544 | OCFS2_JOURNAL_ACCESS_WRITE); | |
60b11392 MF |
545 | if (status < 0) { |
546 | mlog_errno(status); | |
547 | goto out; | |
548 | } | |
549 | ||
550 | i_size_write(inode, 0); | |
551 | ||
552 | status = ocfs2_mark_inode_dirty(handle, inode, fe_bh); | |
553 | if (status < 0) { | |
554 | mlog_errno(status); | |
555 | goto out; | |
556 | } | |
557 | ||
558 | ocfs2_commit_trans(osb, handle); | |
559 | handle = NULL; | |
560 | ||
3a0782d0 MF |
561 | status = ocfs2_prepare_truncate(osb, inode, fe_bh, &tc); |
562 | if (status < 0) { | |
563 | mlog_errno(status); | |
564 | goto out; | |
565 | } | |
ccd979bd | 566 | |
3a0782d0 MF |
567 | status = ocfs2_commit_truncate(osb, inode, fe_bh, tc); |
568 | if (status < 0) { | |
569 | mlog_errno(status); | |
570 | goto out; | |
571 | } | |
ccd979bd | 572 | } |
ccd979bd | 573 | |
60b11392 MF |
574 | out: |
575 | if (handle) | |
576 | ocfs2_commit_trans(osb, handle); | |
ccd979bd MF |
577 | mlog_exit(status); |
578 | return status; | |
579 | } | |
580 | ||
581 | static int ocfs2_remove_inode(struct inode *inode, | |
582 | struct buffer_head *di_bh, | |
583 | struct inode *orphan_dir_inode, | |
584 | struct buffer_head *orphan_dir_bh) | |
585 | { | |
586 | int status; | |
587 | struct inode *inode_alloc_inode = NULL; | |
588 | struct buffer_head *inode_alloc_bh = NULL; | |
1fabe148 | 589 | handle_t *handle; |
ccd979bd MF |
590 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
591 | struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data; | |
592 | ||
593 | inode_alloc_inode = | |
594 | ocfs2_get_system_file_inode(osb, INODE_ALLOC_SYSTEM_INODE, | |
595 | le16_to_cpu(di->i_suballoc_slot)); | |
596 | if (!inode_alloc_inode) { | |
597 | status = -EEXIST; | |
598 | mlog_errno(status); | |
599 | goto bail; | |
600 | } | |
601 | ||
1b1dcc1b | 602 | mutex_lock(&inode_alloc_inode->i_mutex); |
e63aecb6 | 603 | status = ocfs2_inode_lock(inode_alloc_inode, &inode_alloc_bh, 1); |
ccd979bd | 604 | if (status < 0) { |
1b1dcc1b | 605 | mutex_unlock(&inode_alloc_inode->i_mutex); |
ccd979bd MF |
606 | |
607 | mlog_errno(status); | |
608 | goto bail; | |
609 | } | |
610 | ||
a90714c1 | 611 | handle = ocfs2_start_trans(osb, OCFS2_DELETE_INODE_CREDITS + |
9b7895ef | 612 | ocfs2_quota_trans_credits(inode->i_sb)); |
ccd979bd MF |
613 | if (IS_ERR(handle)) { |
614 | status = PTR_ERR(handle); | |
615 | mlog_errno(status); | |
616 | goto bail_unlock; | |
617 | } | |
618 | ||
619 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
620 | orphan_dir_bh); | |
621 | if (status < 0) { | |
622 | mlog_errno(status); | |
623 | goto bail_commit; | |
624 | } | |
625 | ||
626 | /* set the inodes dtime */ | |
13723d00 JB |
627 | status = ocfs2_journal_access_di(handle, inode, di_bh, |
628 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd MF |
629 | if (status < 0) { |
630 | mlog_errno(status); | |
631 | goto bail_commit; | |
632 | } | |
633 | ||
634 | di->i_dtime = cpu_to_le64(CURRENT_TIME.tv_sec); | |
4092d49f | 635 | di->i_flags &= cpu_to_le32(~(OCFS2_VALID_FL | OCFS2_ORPHANED_FL)); |
ccd979bd MF |
636 | |
637 | status = ocfs2_journal_dirty(handle, di_bh); | |
638 | if (status < 0) { | |
639 | mlog_errno(status); | |
640 | goto bail_commit; | |
641 | } | |
642 | ||
643 | ocfs2_remove_from_cache(inode, di_bh); | |
a90714c1 | 644 | vfs_dq_free_inode(inode); |
ccd979bd MF |
645 | |
646 | status = ocfs2_free_dinode(handle, inode_alloc_inode, | |
647 | inode_alloc_bh, di); | |
648 | if (status < 0) | |
649 | mlog_errno(status); | |
650 | ||
651 | bail_commit: | |
02dc1af4 | 652 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 653 | bail_unlock: |
e63aecb6 | 654 | ocfs2_inode_unlock(inode_alloc_inode, 1); |
1b1dcc1b | 655 | mutex_unlock(&inode_alloc_inode->i_mutex); |
ccd979bd MF |
656 | brelse(inode_alloc_bh); |
657 | bail: | |
658 | iput(inode_alloc_inode); | |
659 | ||
660 | return status; | |
661 | } | |
662 | ||
b4df6ed8 MF |
663 | /* |
664 | * Serialize with orphan dir recovery. If the process doing | |
665 | * recovery on this orphan dir does an iget() with the dir | |
666 | * i_mutex held, we'll deadlock here. Instead we detect this | |
667 | * and exit early - recovery will wipe this inode for us. | |
668 | */ | |
669 | static int ocfs2_check_orphan_recovery_state(struct ocfs2_super *osb, | |
670 | int slot) | |
671 | { | |
672 | int ret = 0; | |
673 | ||
674 | spin_lock(&osb->osb_lock); | |
675 | if (ocfs2_node_map_test_bit(osb, &osb->osb_recovering_orphan_dirs, slot)) { | |
676 | mlog(0, "Recovery is happening on orphan dir %d, will skip " | |
677 | "this inode\n", slot); | |
678 | ret = -EDEADLK; | |
679 | goto out; | |
680 | } | |
681 | /* This signals to the orphan recovery process that it should | |
682 | * wait for us to handle the wipe. */ | |
683 | osb->osb_orphan_wipes[slot]++; | |
684 | out: | |
685 | spin_unlock(&osb->osb_lock); | |
686 | return ret; | |
687 | } | |
688 | ||
689 | static void ocfs2_signal_wipe_completion(struct ocfs2_super *osb, | |
690 | int slot) | |
691 | { | |
692 | spin_lock(&osb->osb_lock); | |
693 | osb->osb_orphan_wipes[slot]--; | |
694 | spin_unlock(&osb->osb_lock); | |
695 | ||
696 | wake_up(&osb->osb_wipe_event); | |
697 | } | |
698 | ||
ccd979bd MF |
699 | static int ocfs2_wipe_inode(struct inode *inode, |
700 | struct buffer_head *di_bh) | |
701 | { | |
702 | int status, orphaned_slot; | |
703 | struct inode *orphan_dir_inode = NULL; | |
704 | struct buffer_head *orphan_dir_bh = NULL; | |
705 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
50008630 | 706 | struct ocfs2_dinode *di; |
ccd979bd | 707 | |
50008630 TY |
708 | di = (struct ocfs2_dinode *) di_bh->b_data; |
709 | orphaned_slot = le16_to_cpu(di->i_orphaned_slot); | |
b4df6ed8 MF |
710 | |
711 | status = ocfs2_check_orphan_recovery_state(osb, orphaned_slot); | |
712 | if (status) | |
713 | return status; | |
714 | ||
ccd979bd MF |
715 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, |
716 | ORPHAN_DIR_SYSTEM_INODE, | |
717 | orphaned_slot); | |
718 | if (!orphan_dir_inode) { | |
719 | status = -EEXIST; | |
720 | mlog_errno(status); | |
721 | goto bail; | |
722 | } | |
723 | ||
724 | /* Lock the orphan dir. The lock will be held for the entire | |
725 | * delete_inode operation. We do this now to avoid races with | |
726 | * recovery completion on other nodes. */ | |
1b1dcc1b | 727 | mutex_lock(&orphan_dir_inode->i_mutex); |
e63aecb6 | 728 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
ccd979bd | 729 | if (status < 0) { |
1b1dcc1b | 730 | mutex_unlock(&orphan_dir_inode->i_mutex); |
ccd979bd MF |
731 | |
732 | mlog_errno(status); | |
733 | goto bail; | |
734 | } | |
735 | ||
736 | /* we do this while holding the orphan dir lock because we | |
34d024f8 MF |
737 | * don't want recovery being run from another node to try an |
738 | * inode delete underneath us -- this will result in two nodes | |
ccd979bd MF |
739 | * truncating the same file! */ |
740 | status = ocfs2_truncate_for_delete(osb, inode, di_bh); | |
741 | if (status < 0) { | |
742 | mlog_errno(status); | |
743 | goto bail_unlock_dir; | |
744 | } | |
745 | ||
9b7895ef MF |
746 | /* Remove any dir index tree */ |
747 | if (S_ISDIR(inode->i_mode)) { | |
748 | status = ocfs2_dx_dir_truncate(inode, di_bh); | |
749 | if (status) { | |
750 | mlog_errno(status); | |
751 | goto bail_unlock_dir; | |
752 | } | |
753 | } | |
754 | ||
cf1d6c76 TY |
755 | /*Free extended attribute resources associated with this inode.*/ |
756 | status = ocfs2_xattr_remove(inode, di_bh); | |
757 | if (status < 0) { | |
758 | mlog_errno(status); | |
759 | goto bail_unlock_dir; | |
760 | } | |
761 | ||
ccd979bd MF |
762 | status = ocfs2_remove_inode(inode, di_bh, orphan_dir_inode, |
763 | orphan_dir_bh); | |
764 | if (status < 0) | |
765 | mlog_errno(status); | |
766 | ||
767 | bail_unlock_dir: | |
e63aecb6 | 768 | ocfs2_inode_unlock(orphan_dir_inode, 1); |
1b1dcc1b | 769 | mutex_unlock(&orphan_dir_inode->i_mutex); |
ccd979bd MF |
770 | brelse(orphan_dir_bh); |
771 | bail: | |
772 | iput(orphan_dir_inode); | |
b4df6ed8 | 773 | ocfs2_signal_wipe_completion(osb, orphaned_slot); |
ccd979bd MF |
774 | |
775 | return status; | |
776 | } | |
777 | ||
778 | /* There is a series of simple checks that should be done before a | |
34d024f8 | 779 | * trylock is even considered. Encapsulate those in this function. */ |
ccd979bd MF |
780 | static int ocfs2_inode_is_valid_to_delete(struct inode *inode) |
781 | { | |
782 | int ret = 0; | |
783 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
784 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
785 | ||
786 | /* We shouldn't be getting here for the root directory | |
787 | * inode.. */ | |
788 | if (inode == osb->root_inode) { | |
789 | mlog(ML_ERROR, "Skipping delete of root inode.\n"); | |
790 | goto bail; | |
791 | } | |
792 | ||
34d024f8 | 793 | /* If we're coming from downconvert_thread we can't go into our own |
ccd979bd MF |
794 | * voting [hello, deadlock city!], so unforuntately we just |
795 | * have to skip deleting this guy. That's OK though because | |
796 | * the node who's doing the actual deleting should handle it | |
797 | * anyway. */ | |
34d024f8 | 798 | if (current == osb->dc_task) { |
ccd979bd | 799 | mlog(0, "Skipping delete of %lu because we're currently " |
34d024f8 | 800 | "in downconvert\n", inode->i_ino); |
ccd979bd MF |
801 | goto bail; |
802 | } | |
803 | ||
804 | spin_lock(&oi->ip_lock); | |
805 | /* OCFS2 *never* deletes system files. This should technically | |
806 | * never get here as system file inodes should always have a | |
807 | * positive link count. */ | |
808 | if (oi->ip_flags & OCFS2_INODE_SYSTEM_FILE) { | |
b0697053 MF |
809 | mlog(ML_ERROR, "Skipping delete of system file %llu\n", |
810 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
811 | goto bail_unlock; |
812 | } | |
813 | ||
34d024f8 MF |
814 | /* If we have allowd wipe of this inode for another node, it |
815 | * will be marked here so we can safely skip it. Recovery will | |
816 | * cleanup any inodes we might inadvertantly skip here. */ | |
ccd979bd MF |
817 | if (oi->ip_flags & OCFS2_INODE_SKIP_DELETE) { |
818 | mlog(0, "Skipping delete of %lu because another node " | |
819 | "has done this for us.\n", inode->i_ino); | |
820 | goto bail_unlock; | |
821 | } | |
822 | ||
823 | ret = 1; | |
824 | bail_unlock: | |
825 | spin_unlock(&oi->ip_lock); | |
826 | bail: | |
827 | return ret; | |
828 | } | |
829 | ||
830 | /* Query the cluster to determine whether we should wipe an inode from | |
831 | * disk or not. | |
832 | * | |
833 | * Requires the inode to have the cluster lock. */ | |
834 | static int ocfs2_query_inode_wipe(struct inode *inode, | |
835 | struct buffer_head *di_bh, | |
836 | int *wipe) | |
837 | { | |
838 | int status = 0; | |
839 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
840 | struct ocfs2_dinode *di; | |
841 | ||
842 | *wipe = 0; | |
843 | ||
844 | /* While we were waiting for the cluster lock in | |
845 | * ocfs2_delete_inode, another node might have asked to delete | |
846 | * the inode. Recheck our flags to catch this. */ | |
847 | if (!ocfs2_inode_is_valid_to_delete(inode)) { | |
b0697053 MF |
848 | mlog(0, "Skipping delete of %llu because flags changed\n", |
849 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
850 | goto bail; |
851 | } | |
852 | ||
853 | /* Now that we have an up to date inode, we can double check | |
854 | * the link count. */ | |
855 | if (inode->i_nlink) { | |
b0697053 MF |
856 | mlog(0, "Skipping delete of %llu because nlink = %u\n", |
857 | (unsigned long long)oi->ip_blkno, inode->i_nlink); | |
ccd979bd MF |
858 | goto bail; |
859 | } | |
860 | ||
861 | /* Do some basic inode verification... */ | |
862 | di = (struct ocfs2_dinode *) di_bh->b_data; | |
863 | if (!(di->i_flags & cpu_to_le32(OCFS2_ORPHANED_FL))) { | |
864 | /* for lack of a better error? */ | |
865 | status = -EEXIST; | |
866 | mlog(ML_ERROR, | |
b0697053 | 867 | "Inode %llu (on-disk %llu) not orphaned! " |
ccd979bd | 868 | "Disk flags 0x%x, inode flags 0x%x\n", |
b0697053 | 869 | (unsigned long long)oi->ip_blkno, |
1ca1a111 MF |
870 | (unsigned long long)le64_to_cpu(di->i_blkno), |
871 | le32_to_cpu(di->i_flags), oi->ip_flags); | |
ccd979bd MF |
872 | goto bail; |
873 | } | |
874 | ||
875 | /* has someone already deleted us?! baaad... */ | |
876 | if (di->i_dtime) { | |
877 | status = -EEXIST; | |
878 | mlog_errno(status); | |
879 | goto bail; | |
880 | } | |
881 | ||
6f16bf65 MF |
882 | /* |
883 | * This is how ocfs2 determines whether an inode is still live | |
884 | * within the cluster. Every node takes a shared read lock on | |
885 | * the inode open lock in ocfs2_read_locked_inode(). When we | |
886 | * get to ->delete_inode(), each node tries to convert it's | |
887 | * lock to an exclusive. Trylocks are serialized by the inode | |
888 | * meta data lock. If the upconvert suceeds, we know the inode | |
889 | * is no longer live and can be deleted. | |
890 | * | |
891 | * Though we call this with the meta data lock held, the | |
892 | * trylock keeps us from ABBA deadlock. | |
893 | */ | |
894 | status = ocfs2_try_open_lock(inode, 1); | |
50008630 | 895 | if (status == -EAGAIN) { |
ccd979bd | 896 | status = 0; |
2759236f | 897 | mlog(0, "Skipping delete of %llu because it is in use on " |
b0697053 | 898 | "other nodes\n", (unsigned long long)oi->ip_blkno); |
ccd979bd MF |
899 | goto bail; |
900 | } | |
901 | if (status < 0) { | |
902 | mlog_errno(status); | |
903 | goto bail; | |
904 | } | |
905 | ||
50008630 TY |
906 | *wipe = 1; |
907 | mlog(0, "Inode %llu is ok to wipe from orphan dir %u\n", | |
908 | (unsigned long long)oi->ip_blkno, | |
909 | le16_to_cpu(di->i_orphaned_slot)); | |
ccd979bd MF |
910 | |
911 | bail: | |
912 | return status; | |
913 | } | |
914 | ||
915 | /* Support function for ocfs2_delete_inode. Will help us keep the | |
916 | * inode data in a consistent state for clear_inode. Always truncates | |
917 | * pages, optionally sync's them first. */ | |
918 | static void ocfs2_cleanup_delete_inode(struct inode *inode, | |
919 | int sync_data) | |
920 | { | |
b0697053 MF |
921 | mlog(0, "Cleanup inode %llu, sync = %d\n", |
922 | (unsigned long long)OCFS2_I(inode)->ip_blkno, sync_data); | |
ccd979bd MF |
923 | if (sync_data) |
924 | write_inode_now(inode, 1); | |
925 | truncate_inode_pages(&inode->i_data, 0); | |
926 | } | |
927 | ||
928 | void ocfs2_delete_inode(struct inode *inode) | |
929 | { | |
930 | int wipe, status; | |
931 | sigset_t blocked, oldset; | |
932 | struct buffer_head *di_bh = NULL; | |
933 | ||
934 | mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino); | |
935 | ||
a90714c1 JK |
936 | /* When we fail in read_inode() we mark inode as bad. The second test |
937 | * catches the case when inode allocation fails before allocating | |
938 | * a block for inode. */ | |
939 | if (is_bad_inode(inode) || !OCFS2_I(inode)->ip_blkno) { | |
ccd979bd MF |
940 | mlog(0, "Skipping delete of bad inode\n"); |
941 | goto bail; | |
942 | } | |
943 | ||
944 | if (!ocfs2_inode_is_valid_to_delete(inode)) { | |
945 | /* It's probably not necessary to truncate_inode_pages | |
946 | * here but we do it for safety anyway (it will most | |
947 | * likely be a no-op anyway) */ | |
948 | ocfs2_cleanup_delete_inode(inode, 0); | |
949 | goto bail; | |
950 | } | |
951 | ||
952 | /* We want to block signals in delete_inode as the lock and | |
953 | * messaging paths may return us -ERESTARTSYS. Which would | |
954 | * cause us to exit early, resulting in inodes being orphaned | |
955 | * forever. */ | |
956 | sigfillset(&blocked); | |
957 | status = sigprocmask(SIG_BLOCK, &blocked, &oldset); | |
958 | if (status < 0) { | |
959 | mlog_errno(status); | |
960 | ocfs2_cleanup_delete_inode(inode, 1); | |
961 | goto bail; | |
962 | } | |
963 | ||
964 | /* Lock down the inode. This gives us an up to date view of | |
965 | * it's metadata (for verification), and allows us to | |
34d024f8 | 966 | * serialize delete_inode on multiple nodes. |
ccd979bd MF |
967 | * |
968 | * Even though we might be doing a truncate, we don't take the | |
969 | * allocation lock here as it won't be needed - nobody will | |
970 | * have the file open. | |
971 | */ | |
e63aecb6 | 972 | status = ocfs2_inode_lock(inode, &di_bh, 1); |
ccd979bd MF |
973 | if (status < 0) { |
974 | if (status != -ENOENT) | |
975 | mlog_errno(status); | |
976 | ocfs2_cleanup_delete_inode(inode, 0); | |
977 | goto bail_unblock; | |
978 | } | |
979 | ||
980 | /* Query the cluster. This will be the final decision made | |
981 | * before we go ahead and wipe the inode. */ | |
982 | status = ocfs2_query_inode_wipe(inode, di_bh, &wipe); | |
983 | if (!wipe || status < 0) { | |
34d024f8 | 984 | /* Error and remote inode busy both mean we won't be |
ccd979bd MF |
985 | * removing the inode, so they take almost the same |
986 | * path. */ | |
987 | if (status < 0) | |
988 | mlog_errno(status); | |
989 | ||
34d024f8 MF |
990 | /* Someone in the cluster has disallowed a wipe of |
991 | * this inode, or it was never completely | |
992 | * orphaned. Write out the pages and exit now. */ | |
ccd979bd MF |
993 | ocfs2_cleanup_delete_inode(inode, 1); |
994 | goto bail_unlock_inode; | |
995 | } | |
996 | ||
997 | ocfs2_cleanup_delete_inode(inode, 0); | |
998 | ||
999 | status = ocfs2_wipe_inode(inode, di_bh); | |
1000 | if (status < 0) { | |
b4df6ed8 MF |
1001 | if (status != -EDEADLK) |
1002 | mlog_errno(status); | |
ccd979bd MF |
1003 | goto bail_unlock_inode; |
1004 | } | |
1005 | ||
24c19ef4 MF |
1006 | /* |
1007 | * Mark the inode as successfully deleted. | |
1008 | * | |
1009 | * This is important for ocfs2_clear_inode() as it will check | |
1010 | * this flag and skip any checkpointing work | |
1011 | * | |
1012 | * ocfs2_stuff_meta_lvb() also uses this flag to invalidate | |
1013 | * the LVB for other nodes. | |
1014 | */ | |
ccd979bd MF |
1015 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_DELETED; |
1016 | ||
1017 | bail_unlock_inode: | |
e63aecb6 | 1018 | ocfs2_inode_unlock(inode, 1); |
ccd979bd MF |
1019 | brelse(di_bh); |
1020 | bail_unblock: | |
1021 | status = sigprocmask(SIG_SETMASK, &oldset, NULL); | |
1022 | if (status < 0) | |
1023 | mlog_errno(status); | |
1024 | bail: | |
1025 | clear_inode(inode); | |
1026 | mlog_exit_void(); | |
1027 | } | |
1028 | ||
1029 | void ocfs2_clear_inode(struct inode *inode) | |
1030 | { | |
1031 | int status; | |
1032 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
1033 | ||
1034 | mlog_entry_void(); | |
1035 | ||
1036 | if (!inode) | |
1037 | goto bail; | |
1038 | ||
b0697053 MF |
1039 | mlog(0, "Clearing inode: %llu, nlink = %u\n", |
1040 | (unsigned long long)OCFS2_I(inode)->ip_blkno, inode->i_nlink); | |
ccd979bd MF |
1041 | |
1042 | mlog_bug_on_msg(OCFS2_SB(inode->i_sb) == NULL, | |
1043 | "Inode=%lu\n", inode->i_ino); | |
1044 | ||
34d024f8 MF |
1045 | /* To preven remote deletes we hold open lock before, now it |
1046 | * is time to unlock PR and EX open locks. */ | |
50008630 TY |
1047 | ocfs2_open_unlock(inode); |
1048 | ||
ccd979bd | 1049 | /* Do these before all the other work so that we don't bounce |
34d024f8 | 1050 | * the downconvert thread while waiting to destroy the locks. */ |
ccd979bd | 1051 | ocfs2_mark_lockres_freeing(&oi->ip_rw_lockres); |
e63aecb6 | 1052 | ocfs2_mark_lockres_freeing(&oi->ip_inode_lockres); |
50008630 | 1053 | ocfs2_mark_lockres_freeing(&oi->ip_open_lockres); |
ccd979bd MF |
1054 | |
1055 | /* We very well may get a clear_inode before all an inodes | |
1056 | * metadata has hit disk. Of course, we can't drop any cluster | |
1057 | * locks until the journal has finished with it. The only | |
1058 | * exception here are successfully wiped inodes - their | |
1059 | * metadata can now be considered to be part of the system | |
1060 | * inodes from which it came. */ | |
1061 | if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED)) | |
1062 | ocfs2_checkpoint_inode(inode); | |
1063 | ||
1064 | mlog_bug_on_msg(!list_empty(&oi->ip_io_markers), | |
b0697053 MF |
1065 | "Clear inode of %llu, inode has io markers\n", |
1066 | (unsigned long long)oi->ip_blkno); | |
ccd979bd | 1067 | |
83418978 MF |
1068 | ocfs2_extent_map_trunc(inode, 0); |
1069 | ||
ccd979bd MF |
1070 | status = ocfs2_drop_inode_locks(inode); |
1071 | if (status < 0) | |
1072 | mlog_errno(status); | |
1073 | ||
1074 | ocfs2_lock_res_free(&oi->ip_rw_lockres); | |
e63aecb6 | 1075 | ocfs2_lock_res_free(&oi->ip_inode_lockres); |
50008630 | 1076 | ocfs2_lock_res_free(&oi->ip_open_lockres); |
ccd979bd MF |
1077 | |
1078 | ocfs2_metadata_cache_purge(inode); | |
1079 | ||
1080 | mlog_bug_on_msg(oi->ip_metadata_cache.ci_num_cached, | |
b0697053 MF |
1081 | "Clear inode of %llu, inode has %u cache items\n", |
1082 | (unsigned long long)oi->ip_blkno, oi->ip_metadata_cache.ci_num_cached); | |
ccd979bd MF |
1083 | |
1084 | mlog_bug_on_msg(!(oi->ip_flags & OCFS2_INODE_CACHE_INLINE), | |
b0697053 MF |
1085 | "Clear inode of %llu, inode has a bad flag\n", |
1086 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
1087 | |
1088 | mlog_bug_on_msg(spin_is_locked(&oi->ip_lock), | |
b0697053 MF |
1089 | "Clear inode of %llu, inode is locked\n", |
1090 | (unsigned long long)oi->ip_blkno); | |
ccd979bd | 1091 | |
251b6ecc | 1092 | mlog_bug_on_msg(!mutex_trylock(&oi->ip_io_mutex), |
b0697053 MF |
1093 | "Clear inode of %llu, io_mutex is locked\n", |
1094 | (unsigned long long)oi->ip_blkno); | |
251b6ecc | 1095 | mutex_unlock(&oi->ip_io_mutex); |
ccd979bd MF |
1096 | |
1097 | /* | |
1098 | * down_trylock() returns 0, down_write_trylock() returns 1 | |
1099 | * kernel 1, world 0 | |
1100 | */ | |
1101 | mlog_bug_on_msg(!down_write_trylock(&oi->ip_alloc_sem), | |
b0697053 MF |
1102 | "Clear inode of %llu, alloc_sem is locked\n", |
1103 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
1104 | up_write(&oi->ip_alloc_sem); |
1105 | ||
1106 | mlog_bug_on_msg(oi->ip_open_count, | |
b0697053 MF |
1107 | "Clear inode of %llu has open count %d\n", |
1108 | (unsigned long long)oi->ip_blkno, oi->ip_open_count); | |
ccd979bd MF |
1109 | |
1110 | /* Clear all other flags. */ | |
1111 | oi->ip_flags = OCFS2_INODE_CACHE_INLINE; | |
1112 | oi->ip_created_trans = 0; | |
1113 | oi->ip_last_trans = 0; | |
1114 | oi->ip_dir_start_lookup = 0; | |
1115 | oi->ip_blkno = 0ULL; | |
ae0dff68 SM |
1116 | |
1117 | /* | |
1118 | * ip_jinode is used to track txns against this inode. We ensure that | |
1119 | * the journal is flushed before journal shutdown. Thus it is safe to | |
1120 | * have inodes get cleaned up after journal shutdown. | |
1121 | */ | |
2b4e30fb JB |
1122 | jbd2_journal_release_jbd_inode(OCFS2_SB(inode->i_sb)->journal->j_journal, |
1123 | &oi->ip_jinode); | |
ccd979bd MF |
1124 | |
1125 | bail: | |
1126 | mlog_exit_void(); | |
1127 | } | |
1128 | ||
1129 | /* Called under inode_lock, with no more references on the | |
1130 | * struct inode, so it's safe here to check the flags field | |
1131 | * and to manipulate i_nlink without any other locks. */ | |
1132 | void ocfs2_drop_inode(struct inode *inode) | |
1133 | { | |
1134 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
1135 | ||
1136 | mlog_entry_void(); | |
1137 | ||
b0697053 MF |
1138 | mlog(0, "Drop inode %llu, nlink = %u, ip_flags = 0x%x\n", |
1139 | (unsigned long long)oi->ip_blkno, inode->i_nlink, oi->ip_flags); | |
ccd979bd | 1140 | |
379dfe9d MF |
1141 | if (oi->ip_flags & OCFS2_INODE_MAYBE_ORPHANED) |
1142 | generic_delete_inode(inode); | |
1143 | else | |
1144 | generic_drop_inode(inode); | |
ccd979bd MF |
1145 | |
1146 | mlog_exit_void(); | |
1147 | } | |
1148 | ||
ccd979bd MF |
1149 | /* |
1150 | * This is called from our getattr. | |
1151 | */ | |
1152 | int ocfs2_inode_revalidate(struct dentry *dentry) | |
1153 | { | |
1154 | struct inode *inode = dentry->d_inode; | |
1155 | int status = 0; | |
1156 | ||
b0697053 MF |
1157 | mlog_entry("(inode = 0x%p, ino = %llu)\n", inode, |
1158 | inode ? (unsigned long long)OCFS2_I(inode)->ip_blkno : 0ULL); | |
ccd979bd MF |
1159 | |
1160 | if (!inode) { | |
1161 | mlog(0, "eep, no inode!\n"); | |
1162 | status = -ENOENT; | |
1163 | goto bail; | |
1164 | } | |
1165 | ||
1166 | spin_lock(&OCFS2_I(inode)->ip_lock); | |
1167 | if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED) { | |
1168 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
1169 | mlog(0, "inode deleted!\n"); | |
1170 | status = -ENOENT; | |
1171 | goto bail; | |
1172 | } | |
1173 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
1174 | ||
e63aecb6 | 1175 | /* Let ocfs2_inode_lock do the work of updating our struct |
ccd979bd | 1176 | * inode for us. */ |
e63aecb6 | 1177 | status = ocfs2_inode_lock(inode, NULL, 0); |
ccd979bd MF |
1178 | if (status < 0) { |
1179 | if (status != -ENOENT) | |
1180 | mlog_errno(status); | |
1181 | goto bail; | |
1182 | } | |
e63aecb6 | 1183 | ocfs2_inode_unlock(inode, 0); |
ccd979bd MF |
1184 | bail: |
1185 | mlog_exit(status); | |
1186 | ||
1187 | return status; | |
1188 | } | |
1189 | ||
1190 | /* | |
1191 | * Updates a disk inode from a | |
1192 | * struct inode. | |
1193 | * Only takes ip_lock. | |
1194 | */ | |
1fabe148 | 1195 | int ocfs2_mark_inode_dirty(handle_t *handle, |
ccd979bd MF |
1196 | struct inode *inode, |
1197 | struct buffer_head *bh) | |
1198 | { | |
1199 | int status; | |
1200 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) bh->b_data; | |
1201 | ||
b0697053 MF |
1202 | mlog_entry("(inode %llu)\n", |
1203 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 1204 | |
13723d00 JB |
1205 | status = ocfs2_journal_access_di(handle, inode, bh, |
1206 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd MF |
1207 | if (status < 0) { |
1208 | mlog_errno(status); | |
1209 | goto leave; | |
1210 | } | |
1211 | ||
1212 | spin_lock(&OCFS2_I(inode)->ip_lock); | |
1213 | fe->i_clusters = cpu_to_le32(OCFS2_I(inode)->ip_clusters); | |
6e4b0d56 | 1214 | ocfs2_get_inode_flags(OCFS2_I(inode)); |
ca4d147e | 1215 | fe->i_attr = cpu_to_le32(OCFS2_I(inode)->ip_attr); |
15b1e36b | 1216 | fe->i_dyn_features = cpu_to_le16(OCFS2_I(inode)->ip_dyn_features); |
ccd979bd MF |
1217 | spin_unlock(&OCFS2_I(inode)->ip_lock); |
1218 | ||
1219 | fe->i_size = cpu_to_le64(i_size_read(inode)); | |
198a1ca3 | 1220 | ocfs2_set_links_count(fe, inode->i_nlink); |
ccd979bd MF |
1221 | fe->i_uid = cpu_to_le32(inode->i_uid); |
1222 | fe->i_gid = cpu_to_le32(inode->i_gid); | |
1223 | fe->i_mode = cpu_to_le16(inode->i_mode); | |
1224 | fe->i_atime = cpu_to_le64(inode->i_atime.tv_sec); | |
1225 | fe->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); | |
1226 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); | |
1227 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
1228 | fe->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec); | |
1229 | fe->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); | |
1230 | ||
1231 | status = ocfs2_journal_dirty(handle, bh); | |
1232 | if (status < 0) | |
1233 | mlog_errno(status); | |
1234 | ||
1235 | status = 0; | |
1236 | leave: | |
1237 | ||
1238 | mlog_exit(status); | |
1239 | return status; | |
1240 | } | |
1241 | ||
1242 | /* | |
1243 | * | |
1244 | * Updates a struct inode from a disk inode. | |
1245 | * does no i/o, only takes ip_lock. | |
1246 | */ | |
1247 | void ocfs2_refresh_inode(struct inode *inode, | |
1248 | struct ocfs2_dinode *fe) | |
1249 | { | |
ccd979bd MF |
1250 | spin_lock(&OCFS2_I(inode)->ip_lock); |
1251 | ||
1252 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); | |
ca4d147e | 1253 | OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr); |
15b1e36b | 1254 | OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features); |
ca4d147e | 1255 | ocfs2_set_inode_flags(inode); |
ccd979bd | 1256 | i_size_write(inode, le64_to_cpu(fe->i_size)); |
198a1ca3 | 1257 | inode->i_nlink = ocfs2_read_links_count(fe); |
ccd979bd MF |
1258 | inode->i_uid = le32_to_cpu(fe->i_uid); |
1259 | inode->i_gid = le32_to_cpu(fe->i_gid); | |
1260 | inode->i_mode = le16_to_cpu(fe->i_mode); | |
ccd979bd MF |
1261 | if (S_ISLNK(inode->i_mode) && le32_to_cpu(fe->i_clusters) == 0) |
1262 | inode->i_blocks = 0; | |
1263 | else | |
8110b073 | 1264 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd MF |
1265 | inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime); |
1266 | inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec); | |
1267 | inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime); | |
1268 | inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec); | |
1269 | inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime); | |
1270 | inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec); | |
1271 | ||
1272 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
1273 | } | |
b657c95c JB |
1274 | |
1275 | int ocfs2_validate_inode_block(struct super_block *sb, | |
1276 | struct buffer_head *bh) | |
1277 | { | |
d6b32bbb | 1278 | int rc; |
b657c95c JB |
1279 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data; |
1280 | ||
970e4936 JB |
1281 | mlog(0, "Validating dinode %llu\n", |
1282 | (unsigned long long)bh->b_blocknr); | |
1283 | ||
b657c95c JB |
1284 | BUG_ON(!buffer_uptodate(bh)); |
1285 | ||
d6b32bbb JB |
1286 | /* |
1287 | * If the ecc fails, we return the error but otherwise | |
1288 | * leave the filesystem running. We know any error is | |
1289 | * local to this block. | |
1290 | */ | |
1291 | rc = ocfs2_validate_meta_ecc(sb, bh->b_data, &di->i_check); | |
13723d00 JB |
1292 | if (rc) { |
1293 | mlog(ML_ERROR, "Checksum failed for dinode %llu\n", | |
1294 | (unsigned long long)bh->b_blocknr); | |
d6b32bbb | 1295 | goto bail; |
13723d00 | 1296 | } |
d6b32bbb JB |
1297 | |
1298 | /* | |
1299 | * Errors after here are fatal. | |
1300 | */ | |
1301 | ||
1302 | rc = -EINVAL; | |
1303 | ||
b657c95c JB |
1304 | if (!OCFS2_IS_VALID_DINODE(di)) { |
1305 | ocfs2_error(sb, "Invalid dinode #%llu: signature = %.*s\n", | |
1306 | (unsigned long long)bh->b_blocknr, 7, | |
1307 | di->i_signature); | |
1308 | goto bail; | |
1309 | } | |
1310 | ||
1311 | if (le64_to_cpu(di->i_blkno) != bh->b_blocknr) { | |
1312 | ocfs2_error(sb, "Invalid dinode #%llu: i_blkno is %llu\n", | |
1313 | (unsigned long long)bh->b_blocknr, | |
1314 | (unsigned long long)le64_to_cpu(di->i_blkno)); | |
1315 | goto bail; | |
1316 | } | |
1317 | ||
1318 | if (!(di->i_flags & cpu_to_le32(OCFS2_VALID_FL))) { | |
1319 | ocfs2_error(sb, | |
1320 | "Invalid dinode #%llu: OCFS2_VALID_FL not set\n", | |
1321 | (unsigned long long)bh->b_blocknr); | |
1322 | goto bail; | |
1323 | } | |
1324 | ||
1325 | if (le32_to_cpu(di->i_fs_generation) != | |
1326 | OCFS2_SB(sb)->fs_generation) { | |
1327 | ocfs2_error(sb, | |
1328 | "Invalid dinode #%llu: fs_generation is %u\n", | |
1329 | (unsigned long long)bh->b_blocknr, | |
1330 | le32_to_cpu(di->i_fs_generation)); | |
1331 | goto bail; | |
1332 | } | |
1333 | ||
1334 | rc = 0; | |
1335 | ||
1336 | bail: | |
1337 | return rc; | |
1338 | } | |
1339 | ||
1340 | int ocfs2_read_inode_block_full(struct inode *inode, struct buffer_head **bh, | |
1341 | int flags) | |
1342 | { | |
1343 | int rc; | |
1344 | struct buffer_head *tmp = *bh; | |
1345 | ||
1346 | rc = ocfs2_read_blocks(inode, OCFS2_I(inode)->ip_blkno, 1, &tmp, | |
970e4936 | 1347 | flags, ocfs2_validate_inode_block); |
b657c95c JB |
1348 | |
1349 | /* If ocfs2_read_blocks() got us a new bh, pass it up. */ | |
970e4936 | 1350 | if (!rc && !*bh) |
b657c95c JB |
1351 | *bh = tmp; |
1352 | ||
b657c95c JB |
1353 | return rc; |
1354 | } | |
1355 | ||
1356 | int ocfs2_read_inode_block(struct inode *inode, struct buffer_head **bh) | |
1357 | { | |
1358 | return ocfs2_read_inode_block_full(inode, bh, 0); | |
1359 | } |