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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> | |
ccd979bd MF |
31 | |
32 | #include <asm/byteorder.h> | |
33 | ||
34 | #define MLOG_MASK_PREFIX ML_INODE | |
35 | #include <cluster/masklog.h> | |
36 | ||
37 | #include "ocfs2.h" | |
38 | ||
39 | #include "alloc.h" | |
40 | #include "dlmglue.h" | |
41 | #include "extent_map.h" | |
42 | #include "file.h" | |
b4df6ed8 | 43 | #include "heartbeat.h" |
ccd979bd MF |
44 | #include "inode.h" |
45 | #include "journal.h" | |
46 | #include "namei.h" | |
47 | #include "suballoc.h" | |
48 | #include "super.h" | |
49 | #include "symlink.h" | |
50 | #include "sysfile.h" | |
51 | #include "uptodate.h" | |
cf1d6c76 | 52 | #include "xattr.h" |
ccd979bd MF |
53 | |
54 | #include "buffer_head_io.h" | |
55 | ||
ccd979bd MF |
56 | struct ocfs2_find_inode_args |
57 | { | |
58 | u64 fi_blkno; | |
59 | unsigned long fi_ino; | |
60 | unsigned int fi_flags; | |
5fa0613e | 61 | unsigned int fi_sysfile_type; |
ccd979bd MF |
62 | }; |
63 | ||
5fa0613e JK |
64 | static struct lock_class_key ocfs2_sysfile_lock_key[NUM_SYSTEM_INODES]; |
65 | ||
ccd979bd MF |
66 | static int ocfs2_read_locked_inode(struct inode *inode, |
67 | struct ocfs2_find_inode_args *args); | |
68 | static int ocfs2_init_locked_inode(struct inode *inode, void *opaque); | |
69 | static int ocfs2_find_actor(struct inode *inode, void *opaque); | |
70 | static int ocfs2_truncate_for_delete(struct ocfs2_super *osb, | |
71 | struct inode *inode, | |
72 | struct buffer_head *fe_bh); | |
73 | ||
ca4d147e HP |
74 | void ocfs2_set_inode_flags(struct inode *inode) |
75 | { | |
76 | unsigned int flags = OCFS2_I(inode)->ip_attr; | |
77 | ||
78 | inode->i_flags &= ~(S_IMMUTABLE | | |
79 | S_SYNC | S_APPEND | S_NOATIME | S_DIRSYNC); | |
80 | ||
81 | if (flags & OCFS2_IMMUTABLE_FL) | |
82 | inode->i_flags |= S_IMMUTABLE; | |
83 | ||
84 | if (flags & OCFS2_SYNC_FL) | |
85 | inode->i_flags |= S_SYNC; | |
86 | if (flags & OCFS2_APPEND_FL) | |
87 | inode->i_flags |= S_APPEND; | |
88 | if (flags & OCFS2_NOATIME_FL) | |
89 | inode->i_flags |= S_NOATIME; | |
90 | if (flags & OCFS2_DIRSYNC_FL) | |
91 | inode->i_flags |= S_DIRSYNC; | |
92 | } | |
93 | ||
6e4b0d56 JK |
94 | /* Propagate flags from i_flags to OCFS2_I(inode)->ip_attr */ |
95 | void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi) | |
96 | { | |
97 | unsigned int flags = oi->vfs_inode.i_flags; | |
98 | ||
99 | oi->ip_attr &= ~(OCFS2_SYNC_FL|OCFS2_APPEND_FL| | |
100 | OCFS2_IMMUTABLE_FL|OCFS2_NOATIME_FL|OCFS2_DIRSYNC_FL); | |
101 | if (flags & S_SYNC) | |
102 | oi->ip_attr |= OCFS2_SYNC_FL; | |
103 | if (flags & S_APPEND) | |
104 | oi->ip_attr |= OCFS2_APPEND_FL; | |
105 | if (flags & S_IMMUTABLE) | |
106 | oi->ip_attr |= OCFS2_IMMUTABLE_FL; | |
107 | if (flags & S_NOATIME) | |
108 | oi->ip_attr |= OCFS2_NOATIME_FL; | |
109 | if (flags & S_DIRSYNC) | |
110 | oi->ip_attr |= OCFS2_DIRSYNC_FL; | |
111 | } | |
112 | ||
5fa0613e JK |
113 | struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 blkno, unsigned flags, |
114 | int sysfile_type) | |
ccd979bd MF |
115 | { |
116 | struct inode *inode = NULL; | |
117 | struct super_block *sb = osb->sb; | |
118 | struct ocfs2_find_inode_args args; | |
119 | ||
b0697053 | 120 | mlog_entry("(blkno = %llu)\n", (unsigned long long)blkno); |
ccd979bd MF |
121 | |
122 | /* Ok. By now we've either got the offsets passed to us by the | |
123 | * caller, or we just pulled them off the bh. Lets do some | |
124 | * sanity checks to make sure they're OK. */ | |
125 | if (blkno == 0) { | |
126 | inode = ERR_PTR(-EINVAL); | |
127 | mlog_errno(PTR_ERR(inode)); | |
128 | goto bail; | |
129 | } | |
130 | ||
131 | args.fi_blkno = blkno; | |
24c19ef4 | 132 | args.fi_flags = flags; |
ccd979bd | 133 | args.fi_ino = ino_from_blkno(sb, blkno); |
5fa0613e | 134 | args.fi_sysfile_type = sysfile_type; |
ccd979bd MF |
135 | |
136 | inode = iget5_locked(sb, args.fi_ino, ocfs2_find_actor, | |
137 | ocfs2_init_locked_inode, &args); | |
138 | /* inode was *not* in the inode cache. 2.6.x requires | |
139 | * us to do our own read_inode call and unlock it | |
140 | * afterwards. */ | |
141 | if (inode && inode->i_state & I_NEW) { | |
142 | mlog(0, "Inode was not in inode cache, reading it.\n"); | |
143 | ocfs2_read_locked_inode(inode, &args); | |
144 | unlock_new_inode(inode); | |
145 | } | |
146 | if (inode == NULL) { | |
147 | inode = ERR_PTR(-ENOMEM); | |
148 | mlog_errno(PTR_ERR(inode)); | |
149 | goto bail; | |
150 | } | |
151 | if (is_bad_inode(inode)) { | |
152 | iput(inode); | |
153 | inode = ERR_PTR(-ESTALE); | |
ccd979bd MF |
154 | goto bail; |
155 | } | |
156 | ||
157 | bail: | |
158 | if (!IS_ERR(inode)) { | |
b0697053 MF |
159 | mlog(0, "returning inode with number %llu\n", |
160 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 161 | mlog_exit_ptr(inode); |
6a1bd4a5 | 162 | } |
ccd979bd MF |
163 | |
164 | return inode; | |
165 | } | |
166 | ||
167 | ||
168 | /* | |
169 | * here's how inodes get read from disk: | |
170 | * iget5_locked -> find_actor -> OCFS2_FIND_ACTOR | |
171 | * found? : return the in-memory inode | |
172 | * not found? : get_new_inode -> OCFS2_INIT_LOCKED_INODE | |
173 | */ | |
174 | ||
175 | static int ocfs2_find_actor(struct inode *inode, void *opaque) | |
176 | { | |
177 | struct ocfs2_find_inode_args *args = NULL; | |
178 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
179 | int ret = 0; | |
180 | ||
181 | mlog_entry("(0x%p, %lu, 0x%p)\n", inode, inode->i_ino, opaque); | |
182 | ||
183 | args = opaque; | |
184 | ||
185 | mlog_bug_on_msg(!inode, "No inode in find actor!\n"); | |
186 | ||
187 | if (oi->ip_blkno != args->fi_blkno) | |
188 | goto bail; | |
189 | ||
ccd979bd MF |
190 | ret = 1; |
191 | bail: | |
192 | mlog_exit(ret); | |
193 | return ret; | |
194 | } | |
195 | ||
196 | /* | |
197 | * initialize the new inode, but don't do anything that would cause | |
198 | * us to sleep. | |
199 | * return 0 on success, 1 on failure | |
200 | */ | |
201 | static int ocfs2_init_locked_inode(struct inode *inode, void *opaque) | |
202 | { | |
203 | struct ocfs2_find_inode_args *args = opaque; | |
204 | ||
205 | mlog_entry("inode = %p, opaque = %p\n", inode, opaque); | |
206 | ||
207 | inode->i_ino = args->fi_ino; | |
208 | OCFS2_I(inode)->ip_blkno = args->fi_blkno; | |
5fa0613e JK |
209 | if (args->fi_sysfile_type != 0) |
210 | lockdep_set_class(&inode->i_mutex, | |
211 | &ocfs2_sysfile_lock_key[args->fi_sysfile_type]); | |
ccd979bd MF |
212 | |
213 | mlog_exit(0); | |
214 | return 0; | |
215 | } | |
216 | ||
217 | int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe, | |
218 | int create_ino) | |
219 | { | |
220 | struct super_block *sb; | |
221 | struct ocfs2_super *osb; | |
222 | int status = -EINVAL; | |
53da4939 | 223 | int use_plocks = 1; |
ccd979bd | 224 | |
b0697053 | 225 | mlog_entry("(0x%p, size:%llu)\n", inode, |
1ca1a111 | 226 | (unsigned long long)le64_to_cpu(fe->i_size)); |
ccd979bd MF |
227 | |
228 | sb = inode->i_sb; | |
229 | osb = OCFS2_SB(sb); | |
230 | ||
53da4939 MF |
231 | if ((osb->s_mount_opt & OCFS2_MOUNT_LOCALFLOCKS) || |
232 | ocfs2_mount_local(osb) || !ocfs2_stack_supports_plocks()) | |
233 | use_plocks = 0; | |
234 | ||
ccd979bd MF |
235 | /* this means that read_inode cannot create a superblock inode |
236 | * today. change if needed. */ | |
237 | if (!OCFS2_IS_VALID_DINODE(fe) || | |
238 | !(fe->i_flags & cpu_to_le32(OCFS2_VALID_FL))) { | |
6a1bd4a5 | 239 | mlog(0, "Invalid dinode: i_ino=%lu, i_blkno=%llu, " |
ccd979bd | 240 | "signature = %.*s, flags = 0x%x\n", |
b0697053 MF |
241 | inode->i_ino, |
242 | (unsigned long long)le64_to_cpu(fe->i_blkno), 7, | |
ccd979bd MF |
243 | fe->i_signature, le32_to_cpu(fe->i_flags)); |
244 | goto bail; | |
245 | } | |
246 | ||
247 | if (le32_to_cpu(fe->i_fs_generation) != osb->fs_generation) { | |
248 | mlog(ML_ERROR, "file entry generation does not match " | |
249 | "superblock! osb->fs_generation=%x, " | |
250 | "fe->i_fs_generation=%x\n", | |
251 | osb->fs_generation, le32_to_cpu(fe->i_fs_generation)); | |
252 | goto bail; | |
253 | } | |
254 | ||
8110b073 MF |
255 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); |
256 | OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr); | |
15b1e36b | 257 | OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features); |
8110b073 | 258 | |
ccd979bd MF |
259 | inode->i_version = 1; |
260 | inode->i_generation = le32_to_cpu(fe->i_generation); | |
261 | inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev)); | |
262 | inode->i_mode = le16_to_cpu(fe->i_mode); | |
263 | inode->i_uid = le32_to_cpu(fe->i_uid); | |
264 | inode->i_gid = le32_to_cpu(fe->i_gid); | |
ccd979bd MF |
265 | |
266 | /* Fast symlinks will have i_size but no allocated clusters. */ | |
267 | if (S_ISLNK(inode->i_mode) && !fe->i_clusters) | |
268 | inode->i_blocks = 0; | |
269 | else | |
8110b073 | 270 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd | 271 | inode->i_mapping->a_ops = &ocfs2_aops; |
ccd979bd MF |
272 | inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime); |
273 | inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec); | |
274 | inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime); | |
275 | inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec); | |
276 | inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime); | |
277 | inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec); | |
278 | ||
279 | if (OCFS2_I(inode)->ip_blkno != le64_to_cpu(fe->i_blkno)) | |
280 | mlog(ML_ERROR, | |
b0697053 MF |
281 | "ip_blkno %llu != i_blkno %llu!\n", |
282 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
1ca1a111 | 283 | (unsigned long long)le64_to_cpu(fe->i_blkno)); |
ccd979bd | 284 | |
ccd979bd MF |
285 | inode->i_nlink = le16_to_cpu(fe->i_links_count); |
286 | ||
24c19ef4 MF |
287 | if (fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) |
288 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SYSTEM_FILE; | |
289 | ||
ccd979bd MF |
290 | if (fe->i_flags & cpu_to_le32(OCFS2_LOCAL_ALLOC_FL)) { |
291 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP; | |
292 | mlog(0, "local alloc inode: i_ino=%lu\n", inode->i_ino); | |
293 | } else if (fe->i_flags & cpu_to_le32(OCFS2_BITMAP_FL)) { | |
294 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP; | |
295 | } else if (fe->i_flags & cpu_to_le32(OCFS2_SUPER_BLOCK_FL)) { | |
296 | mlog(0, "superblock inode: i_ino=%lu\n", inode->i_ino); | |
297 | /* we can't actually hit this as read_inode can't | |
298 | * handle superblocks today ;-) */ | |
299 | BUG(); | |
300 | } | |
301 | ||
302 | switch (inode->i_mode & S_IFMT) { | |
303 | case S_IFREG: | |
53da4939 MF |
304 | if (use_plocks) |
305 | inode->i_fop = &ocfs2_fops; | |
306 | else | |
307 | inode->i_fop = &ocfs2_fops_no_plocks; | |
ccd979bd MF |
308 | inode->i_op = &ocfs2_file_iops; |
309 | i_size_write(inode, le64_to_cpu(fe->i_size)); | |
310 | break; | |
311 | case S_IFDIR: | |
312 | inode->i_op = &ocfs2_dir_iops; | |
53da4939 MF |
313 | if (use_plocks) |
314 | inode->i_fop = &ocfs2_dops; | |
315 | else | |
316 | inode->i_fop = &ocfs2_dops_no_plocks; | |
ccd979bd MF |
317 | i_size_write(inode, le64_to_cpu(fe->i_size)); |
318 | break; | |
319 | case S_IFLNK: | |
320 | if (ocfs2_inode_is_fast_symlink(inode)) | |
321 | inode->i_op = &ocfs2_fast_symlink_inode_operations; | |
322 | else | |
323 | inode->i_op = &ocfs2_symlink_inode_operations; | |
324 | i_size_write(inode, le64_to_cpu(fe->i_size)); | |
325 | break; | |
326 | default: | |
327 | inode->i_op = &ocfs2_special_file_iops; | |
328 | init_special_inode(inode, inode->i_mode, | |
329 | inode->i_rdev); | |
330 | break; | |
331 | } | |
332 | ||
24c19ef4 MF |
333 | if (create_ino) { |
334 | inode->i_ino = ino_from_blkno(inode->i_sb, | |
335 | le64_to_cpu(fe->i_blkno)); | |
336 | ||
337 | /* | |
338 | * If we ever want to create system files from kernel, | |
339 | * the generation argument to | |
340 | * ocfs2_inode_lock_res_init() will have to change. | |
341 | */ | |
1ca1a111 | 342 | BUG_ON(le32_to_cpu(fe->i_flags) & OCFS2_SYSTEM_FL); |
24c19ef4 | 343 | |
e63aecb6 | 344 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_inode_lockres, |
24c19ef4 | 345 | OCFS2_LOCK_TYPE_META, 0, inode); |
50008630 TY |
346 | |
347 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres, | |
348 | OCFS2_LOCK_TYPE_OPEN, 0, inode); | |
24c19ef4 MF |
349 | } |
350 | ||
ccd979bd | 351 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_rw_lockres, |
24c19ef4 MF |
352 | OCFS2_LOCK_TYPE_RW, inode->i_generation, |
353 | inode); | |
354 | ||
ca4d147e | 355 | ocfs2_set_inode_flags(inode); |
ca4d147e | 356 | |
ccd979bd MF |
357 | status = 0; |
358 | bail: | |
359 | mlog_exit(status); | |
360 | return status; | |
361 | } | |
362 | ||
363 | static int ocfs2_read_locked_inode(struct inode *inode, | |
364 | struct ocfs2_find_inode_args *args) | |
365 | { | |
366 | struct super_block *sb; | |
367 | struct ocfs2_super *osb; | |
368 | struct ocfs2_dinode *fe; | |
369 | struct buffer_head *bh = NULL; | |
24c19ef4 MF |
370 | int status, can_lock; |
371 | u32 generation = 0; | |
ccd979bd MF |
372 | |
373 | mlog_entry("(0x%p, 0x%p)\n", inode, args); | |
374 | ||
375 | status = -EINVAL; | |
376 | if (inode == NULL || inode->i_sb == NULL) { | |
377 | mlog(ML_ERROR, "bad inode\n"); | |
24c19ef4 | 378 | return status; |
ccd979bd MF |
379 | } |
380 | sb = inode->i_sb; | |
381 | osb = OCFS2_SB(sb); | |
382 | ||
383 | if (!args) { | |
384 | mlog(ML_ERROR, "bad inode args\n"); | |
385 | make_bad_inode(inode); | |
24c19ef4 MF |
386 | return status; |
387 | } | |
388 | ||
389 | /* | |
390 | * To improve performance of cold-cache inode stats, we take | |
391 | * the cluster lock here if possible. | |
392 | * | |
393 | * Generally, OCFS2 never trusts the contents of an inode | |
394 | * unless it's holding a cluster lock, so taking it here isn't | |
395 | * a correctness issue as much as it is a performance | |
396 | * improvement. | |
397 | * | |
398 | * There are three times when taking the lock is not a good idea: | |
399 | * | |
400 | * 1) During startup, before we have initialized the DLM. | |
401 | * | |
402 | * 2) If we are reading certain system files which never get | |
403 | * cluster locks (local alloc, truncate log). | |
404 | * | |
405 | * 3) If the process doing the iget() is responsible for | |
406 | * orphan dir recovery. We're holding the orphan dir lock and | |
407 | * can get into a deadlock with another process on another | |
408 | * node in ->delete_inode(). | |
409 | * | |
410 | * #1 and #2 can be simply solved by never taking the lock | |
411 | * here for system files (which are the only type we read | |
412 | * during mount). It's a heavier approach, but our main | |
413 | * concern is user-accesible files anyway. | |
414 | * | |
415 | * #3 works itself out because we'll eventually take the | |
416 | * cluster lock before trusting anything anyway. | |
417 | */ | |
418 | can_lock = !(args->fi_flags & OCFS2_FI_FLAG_SYSFILE) | |
50008630 | 419 | && !(args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY) |
c271c5c2 | 420 | && !ocfs2_mount_local(osb); |
24c19ef4 MF |
421 | |
422 | /* | |
423 | * To maintain backwards compatibility with older versions of | |
424 | * ocfs2-tools, we still store the generation value for system | |
425 | * files. The only ones that actually matter to userspace are | |
426 | * the journals, but it's easier and inexpensive to just flag | |
427 | * all system files similarly. | |
428 | */ | |
429 | if (args->fi_flags & OCFS2_FI_FLAG_SYSFILE) | |
430 | generation = osb->fs_generation; | |
431 | ||
e63aecb6 | 432 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_inode_lockres, |
24c19ef4 MF |
433 | OCFS2_LOCK_TYPE_META, |
434 | generation, inode); | |
435 | ||
50008630 TY |
436 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres, |
437 | OCFS2_LOCK_TYPE_OPEN, | |
438 | 0, inode); | |
439 | ||
24c19ef4 | 440 | if (can_lock) { |
50008630 TY |
441 | status = ocfs2_open_lock(inode); |
442 | if (status) { | |
443 | make_bad_inode(inode); | |
444 | mlog_errno(status); | |
445 | return status; | |
446 | } | |
e63aecb6 | 447 | status = ocfs2_inode_lock(inode, NULL, 0); |
24c19ef4 MF |
448 | if (status) { |
449 | make_bad_inode(inode); | |
450 | mlog_errno(status); | |
451 | return status; | |
452 | } | |
ccd979bd MF |
453 | } |
454 | ||
50008630 TY |
455 | if (args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY) { |
456 | status = ocfs2_try_open_lock(inode, 0); | |
457 | if (status) { | |
458 | make_bad_inode(inode); | |
459 | return status; | |
460 | } | |
461 | } | |
462 | ||
da1e9098 | 463 | if (can_lock) |
d4a8c93c JB |
464 | status = ocfs2_read_blocks(inode, args->fi_blkno, 1, &bh, |
465 | OCFS2_BH_IGNORE_CACHE); | |
da1e9098 JB |
466 | else |
467 | status = ocfs2_read_blocks_sync(osb, args->fi_blkno, 1, &bh); | |
ccd979bd MF |
468 | if (status < 0) { |
469 | mlog_errno(status); | |
ccd979bd MF |
470 | goto bail; |
471 | } | |
472 | ||
24c19ef4 | 473 | status = -EINVAL; |
ccd979bd MF |
474 | fe = (struct ocfs2_dinode *) bh->b_data; |
475 | if (!OCFS2_IS_VALID_DINODE(fe)) { | |
a46043e0 MF |
476 | mlog(0, "Invalid dinode #%llu: signature = %.*s\n", |
477 | (unsigned long long)args->fi_blkno, 7, | |
1ca1a111 | 478 | fe->i_signature); |
ccd979bd MF |
479 | goto bail; |
480 | } | |
481 | ||
24c19ef4 MF |
482 | /* |
483 | * This is a code bug. Right now the caller needs to | |
484 | * understand whether it is asking for a system file inode or | |
485 | * not so the proper lock names can be built. | |
486 | */ | |
487 | mlog_bug_on_msg(!!(fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) != | |
488 | !!(args->fi_flags & OCFS2_FI_FLAG_SYSFILE), | |
489 | "Inode %llu: system file state is ambigous\n", | |
490 | (unsigned long long)args->fi_blkno); | |
ccd979bd MF |
491 | |
492 | if (S_ISCHR(le16_to_cpu(fe->i_mode)) || | |
493 | S_ISBLK(le16_to_cpu(fe->i_mode))) | |
494 | inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev)); | |
495 | ||
6a1bd4a5 | 496 | if (ocfs2_populate_inode(inode, fe, 0) < 0) |
ccd979bd | 497 | goto bail; |
ccd979bd MF |
498 | |
499 | BUG_ON(args->fi_blkno != le64_to_cpu(fe->i_blkno)); | |
500 | ||
ccd979bd MF |
501 | status = 0; |
502 | ||
503 | bail: | |
24c19ef4 | 504 | if (can_lock) |
e63aecb6 | 505 | ocfs2_inode_unlock(inode, 0); |
24c19ef4 MF |
506 | |
507 | if (status < 0) | |
508 | make_bad_inode(inode); | |
509 | ||
ccd979bd MF |
510 | if (args && bh) |
511 | brelse(bh); | |
512 | ||
513 | mlog_exit(status); | |
514 | return status; | |
515 | } | |
516 | ||
517 | void ocfs2_sync_blockdev(struct super_block *sb) | |
518 | { | |
519 | sync_blockdev(sb->s_bdev); | |
520 | } | |
521 | ||
522 | static int ocfs2_truncate_for_delete(struct ocfs2_super *osb, | |
523 | struct inode *inode, | |
524 | struct buffer_head *fe_bh) | |
525 | { | |
526 | int status = 0; | |
ccd979bd MF |
527 | struct ocfs2_truncate_context *tc = NULL; |
528 | struct ocfs2_dinode *fe; | |
60b11392 | 529 | handle_t *handle = NULL; |
ccd979bd MF |
530 | |
531 | mlog_entry_void(); | |
532 | ||
533 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
534 | ||
1afc32b9 MF |
535 | /* |
536 | * This check will also skip truncate of inodes with inline | |
537 | * data and fast symlinks. | |
538 | */ | |
3a0782d0 | 539 | if (fe->i_clusters) { |
2b4e30fb JB |
540 | if (ocfs2_should_order_data(inode)) |
541 | ocfs2_begin_ordered_truncate(inode, 0); | |
542 | ||
60b11392 MF |
543 | handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); |
544 | if (IS_ERR(handle)) { | |
545 | status = PTR_ERR(handle); | |
546 | mlog_errno(status); | |
547 | goto out; | |
548 | } | |
549 | ||
550 | status = ocfs2_journal_access(handle, inode, fe_bh, | |
551 | OCFS2_JOURNAL_ACCESS_WRITE); | |
552 | if (status < 0) { | |
553 | mlog_errno(status); | |
554 | goto out; | |
555 | } | |
556 | ||
557 | i_size_write(inode, 0); | |
558 | ||
559 | status = ocfs2_mark_inode_dirty(handle, inode, fe_bh); | |
560 | if (status < 0) { | |
561 | mlog_errno(status); | |
562 | goto out; | |
563 | } | |
564 | ||
565 | ocfs2_commit_trans(osb, handle); | |
566 | handle = NULL; | |
567 | ||
3a0782d0 MF |
568 | status = ocfs2_prepare_truncate(osb, inode, fe_bh, &tc); |
569 | if (status < 0) { | |
570 | mlog_errno(status); | |
571 | goto out; | |
572 | } | |
ccd979bd | 573 | |
3a0782d0 MF |
574 | status = ocfs2_commit_truncate(osb, inode, fe_bh, tc); |
575 | if (status < 0) { | |
576 | mlog_errno(status); | |
577 | goto out; | |
578 | } | |
ccd979bd | 579 | } |
ccd979bd | 580 | |
60b11392 MF |
581 | out: |
582 | if (handle) | |
583 | ocfs2_commit_trans(osb, handle); | |
ccd979bd MF |
584 | mlog_exit(status); |
585 | return status; | |
586 | } | |
587 | ||
588 | static int ocfs2_remove_inode(struct inode *inode, | |
589 | struct buffer_head *di_bh, | |
590 | struct inode *orphan_dir_inode, | |
591 | struct buffer_head *orphan_dir_bh) | |
592 | { | |
593 | int status; | |
594 | struct inode *inode_alloc_inode = NULL; | |
595 | struct buffer_head *inode_alloc_bh = NULL; | |
1fabe148 | 596 | handle_t *handle; |
ccd979bd MF |
597 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
598 | struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data; | |
599 | ||
600 | inode_alloc_inode = | |
601 | ocfs2_get_system_file_inode(osb, INODE_ALLOC_SYSTEM_INODE, | |
602 | le16_to_cpu(di->i_suballoc_slot)); | |
603 | if (!inode_alloc_inode) { | |
604 | status = -EEXIST; | |
605 | mlog_errno(status); | |
606 | goto bail; | |
607 | } | |
608 | ||
1b1dcc1b | 609 | mutex_lock(&inode_alloc_inode->i_mutex); |
e63aecb6 | 610 | status = ocfs2_inode_lock(inode_alloc_inode, &inode_alloc_bh, 1); |
ccd979bd | 611 | if (status < 0) { |
1b1dcc1b | 612 | mutex_unlock(&inode_alloc_inode->i_mutex); |
ccd979bd MF |
613 | |
614 | mlog_errno(status); | |
615 | goto bail; | |
616 | } | |
617 | ||
65eff9cc | 618 | handle = ocfs2_start_trans(osb, OCFS2_DELETE_INODE_CREDITS); |
ccd979bd MF |
619 | if (IS_ERR(handle)) { |
620 | status = PTR_ERR(handle); | |
621 | mlog_errno(status); | |
622 | goto bail_unlock; | |
623 | } | |
624 | ||
625 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
626 | orphan_dir_bh); | |
627 | if (status < 0) { | |
628 | mlog_errno(status); | |
629 | goto bail_commit; | |
630 | } | |
631 | ||
632 | /* set the inodes dtime */ | |
633 | status = ocfs2_journal_access(handle, inode, di_bh, | |
634 | OCFS2_JOURNAL_ACCESS_WRITE); | |
635 | if (status < 0) { | |
636 | mlog_errno(status); | |
637 | goto bail_commit; | |
638 | } | |
639 | ||
640 | di->i_dtime = cpu_to_le64(CURRENT_TIME.tv_sec); | |
4092d49f | 641 | di->i_flags &= cpu_to_le32(~(OCFS2_VALID_FL | OCFS2_ORPHANED_FL)); |
ccd979bd MF |
642 | |
643 | status = ocfs2_journal_dirty(handle, di_bh); | |
644 | if (status < 0) { | |
645 | mlog_errno(status); | |
646 | goto bail_commit; | |
647 | } | |
648 | ||
649 | ocfs2_remove_from_cache(inode, di_bh); | |
650 | ||
651 | status = ocfs2_free_dinode(handle, inode_alloc_inode, | |
652 | inode_alloc_bh, di); | |
653 | if (status < 0) | |
654 | mlog_errno(status); | |
655 | ||
656 | bail_commit: | |
02dc1af4 | 657 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 658 | bail_unlock: |
e63aecb6 | 659 | ocfs2_inode_unlock(inode_alloc_inode, 1); |
1b1dcc1b | 660 | mutex_unlock(&inode_alloc_inode->i_mutex); |
ccd979bd MF |
661 | brelse(inode_alloc_bh); |
662 | bail: | |
663 | iput(inode_alloc_inode); | |
664 | ||
665 | return status; | |
666 | } | |
667 | ||
b4df6ed8 MF |
668 | /* |
669 | * Serialize with orphan dir recovery. If the process doing | |
670 | * recovery on this orphan dir does an iget() with the dir | |
671 | * i_mutex held, we'll deadlock here. Instead we detect this | |
672 | * and exit early - recovery will wipe this inode for us. | |
673 | */ | |
674 | static int ocfs2_check_orphan_recovery_state(struct ocfs2_super *osb, | |
675 | int slot) | |
676 | { | |
677 | int ret = 0; | |
678 | ||
679 | spin_lock(&osb->osb_lock); | |
680 | if (ocfs2_node_map_test_bit(osb, &osb->osb_recovering_orphan_dirs, slot)) { | |
681 | mlog(0, "Recovery is happening on orphan dir %d, will skip " | |
682 | "this inode\n", slot); | |
683 | ret = -EDEADLK; | |
684 | goto out; | |
685 | } | |
686 | /* This signals to the orphan recovery process that it should | |
687 | * wait for us to handle the wipe. */ | |
688 | osb->osb_orphan_wipes[slot]++; | |
689 | out: | |
690 | spin_unlock(&osb->osb_lock); | |
691 | return ret; | |
692 | } | |
693 | ||
694 | static void ocfs2_signal_wipe_completion(struct ocfs2_super *osb, | |
695 | int slot) | |
696 | { | |
697 | spin_lock(&osb->osb_lock); | |
698 | osb->osb_orphan_wipes[slot]--; | |
699 | spin_unlock(&osb->osb_lock); | |
700 | ||
701 | wake_up(&osb->osb_wipe_event); | |
702 | } | |
703 | ||
ccd979bd MF |
704 | static int ocfs2_wipe_inode(struct inode *inode, |
705 | struct buffer_head *di_bh) | |
706 | { | |
707 | int status, orphaned_slot; | |
708 | struct inode *orphan_dir_inode = NULL; | |
709 | struct buffer_head *orphan_dir_bh = NULL; | |
710 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
50008630 | 711 | struct ocfs2_dinode *di; |
ccd979bd | 712 | |
50008630 TY |
713 | di = (struct ocfs2_dinode *) di_bh->b_data; |
714 | orphaned_slot = le16_to_cpu(di->i_orphaned_slot); | |
b4df6ed8 MF |
715 | |
716 | status = ocfs2_check_orphan_recovery_state(osb, orphaned_slot); | |
717 | if (status) | |
718 | return status; | |
719 | ||
ccd979bd MF |
720 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, |
721 | ORPHAN_DIR_SYSTEM_INODE, | |
722 | orphaned_slot); | |
723 | if (!orphan_dir_inode) { | |
724 | status = -EEXIST; | |
725 | mlog_errno(status); | |
726 | goto bail; | |
727 | } | |
728 | ||
729 | /* Lock the orphan dir. The lock will be held for the entire | |
730 | * delete_inode operation. We do this now to avoid races with | |
731 | * recovery completion on other nodes. */ | |
1b1dcc1b | 732 | mutex_lock(&orphan_dir_inode->i_mutex); |
e63aecb6 | 733 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
ccd979bd | 734 | if (status < 0) { |
1b1dcc1b | 735 | mutex_unlock(&orphan_dir_inode->i_mutex); |
ccd979bd MF |
736 | |
737 | mlog_errno(status); | |
738 | goto bail; | |
739 | } | |
740 | ||
741 | /* we do this while holding the orphan dir lock because we | |
34d024f8 MF |
742 | * don't want recovery being run from another node to try an |
743 | * inode delete underneath us -- this will result in two nodes | |
ccd979bd MF |
744 | * truncating the same file! */ |
745 | status = ocfs2_truncate_for_delete(osb, inode, di_bh); | |
746 | if (status < 0) { | |
747 | mlog_errno(status); | |
748 | goto bail_unlock_dir; | |
749 | } | |
750 | ||
cf1d6c76 TY |
751 | /*Free extended attribute resources associated with this inode.*/ |
752 | status = ocfs2_xattr_remove(inode, di_bh); | |
753 | if (status < 0) { | |
754 | mlog_errno(status); | |
755 | goto bail_unlock_dir; | |
756 | } | |
757 | ||
ccd979bd MF |
758 | status = ocfs2_remove_inode(inode, di_bh, orphan_dir_inode, |
759 | orphan_dir_bh); | |
760 | if (status < 0) | |
761 | mlog_errno(status); | |
762 | ||
763 | bail_unlock_dir: | |
e63aecb6 | 764 | ocfs2_inode_unlock(orphan_dir_inode, 1); |
1b1dcc1b | 765 | mutex_unlock(&orphan_dir_inode->i_mutex); |
ccd979bd MF |
766 | brelse(orphan_dir_bh); |
767 | bail: | |
768 | iput(orphan_dir_inode); | |
b4df6ed8 | 769 | ocfs2_signal_wipe_completion(osb, orphaned_slot); |
ccd979bd MF |
770 | |
771 | return status; | |
772 | } | |
773 | ||
774 | /* There is a series of simple checks that should be done before a | |
34d024f8 | 775 | * trylock is even considered. Encapsulate those in this function. */ |
ccd979bd MF |
776 | static int ocfs2_inode_is_valid_to_delete(struct inode *inode) |
777 | { | |
778 | int ret = 0; | |
779 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
780 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
781 | ||
782 | /* We shouldn't be getting here for the root directory | |
783 | * inode.. */ | |
784 | if (inode == osb->root_inode) { | |
785 | mlog(ML_ERROR, "Skipping delete of root inode.\n"); | |
786 | goto bail; | |
787 | } | |
788 | ||
34d024f8 | 789 | /* If we're coming from downconvert_thread we can't go into our own |
ccd979bd MF |
790 | * voting [hello, deadlock city!], so unforuntately we just |
791 | * have to skip deleting this guy. That's OK though because | |
792 | * the node who's doing the actual deleting should handle it | |
793 | * anyway. */ | |
34d024f8 | 794 | if (current == osb->dc_task) { |
ccd979bd | 795 | mlog(0, "Skipping delete of %lu because we're currently " |
34d024f8 | 796 | "in downconvert\n", inode->i_ino); |
ccd979bd MF |
797 | goto bail; |
798 | } | |
799 | ||
800 | spin_lock(&oi->ip_lock); | |
801 | /* OCFS2 *never* deletes system files. This should technically | |
802 | * never get here as system file inodes should always have a | |
803 | * positive link count. */ | |
804 | if (oi->ip_flags & OCFS2_INODE_SYSTEM_FILE) { | |
b0697053 MF |
805 | mlog(ML_ERROR, "Skipping delete of system file %llu\n", |
806 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
807 | goto bail_unlock; |
808 | } | |
809 | ||
34d024f8 MF |
810 | /* If we have allowd wipe of this inode for another node, it |
811 | * will be marked here so we can safely skip it. Recovery will | |
812 | * cleanup any inodes we might inadvertantly skip here. */ | |
ccd979bd MF |
813 | if (oi->ip_flags & OCFS2_INODE_SKIP_DELETE) { |
814 | mlog(0, "Skipping delete of %lu because another node " | |
815 | "has done this for us.\n", inode->i_ino); | |
816 | goto bail_unlock; | |
817 | } | |
818 | ||
819 | ret = 1; | |
820 | bail_unlock: | |
821 | spin_unlock(&oi->ip_lock); | |
822 | bail: | |
823 | return ret; | |
824 | } | |
825 | ||
826 | /* Query the cluster to determine whether we should wipe an inode from | |
827 | * disk or not. | |
828 | * | |
829 | * Requires the inode to have the cluster lock. */ | |
830 | static int ocfs2_query_inode_wipe(struct inode *inode, | |
831 | struct buffer_head *di_bh, | |
832 | int *wipe) | |
833 | { | |
834 | int status = 0; | |
835 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
836 | struct ocfs2_dinode *di; | |
837 | ||
838 | *wipe = 0; | |
839 | ||
840 | /* While we were waiting for the cluster lock in | |
841 | * ocfs2_delete_inode, another node might have asked to delete | |
842 | * the inode. Recheck our flags to catch this. */ | |
843 | if (!ocfs2_inode_is_valid_to_delete(inode)) { | |
b0697053 MF |
844 | mlog(0, "Skipping delete of %llu because flags changed\n", |
845 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
846 | goto bail; |
847 | } | |
848 | ||
849 | /* Now that we have an up to date inode, we can double check | |
850 | * the link count. */ | |
851 | if (inode->i_nlink) { | |
b0697053 MF |
852 | mlog(0, "Skipping delete of %llu because nlink = %u\n", |
853 | (unsigned long long)oi->ip_blkno, inode->i_nlink); | |
ccd979bd MF |
854 | goto bail; |
855 | } | |
856 | ||
857 | /* Do some basic inode verification... */ | |
858 | di = (struct ocfs2_dinode *) di_bh->b_data; | |
859 | if (!(di->i_flags & cpu_to_le32(OCFS2_ORPHANED_FL))) { | |
860 | /* for lack of a better error? */ | |
861 | status = -EEXIST; | |
862 | mlog(ML_ERROR, | |
b0697053 | 863 | "Inode %llu (on-disk %llu) not orphaned! " |
ccd979bd | 864 | "Disk flags 0x%x, inode flags 0x%x\n", |
b0697053 | 865 | (unsigned long long)oi->ip_blkno, |
1ca1a111 MF |
866 | (unsigned long long)le64_to_cpu(di->i_blkno), |
867 | le32_to_cpu(di->i_flags), oi->ip_flags); | |
ccd979bd MF |
868 | goto bail; |
869 | } | |
870 | ||
871 | /* has someone already deleted us?! baaad... */ | |
872 | if (di->i_dtime) { | |
873 | status = -EEXIST; | |
874 | mlog_errno(status); | |
875 | goto bail; | |
876 | } | |
877 | ||
6f16bf65 MF |
878 | /* |
879 | * This is how ocfs2 determines whether an inode is still live | |
880 | * within the cluster. Every node takes a shared read lock on | |
881 | * the inode open lock in ocfs2_read_locked_inode(). When we | |
882 | * get to ->delete_inode(), each node tries to convert it's | |
883 | * lock to an exclusive. Trylocks are serialized by the inode | |
884 | * meta data lock. If the upconvert suceeds, we know the inode | |
885 | * is no longer live and can be deleted. | |
886 | * | |
887 | * Though we call this with the meta data lock held, the | |
888 | * trylock keeps us from ABBA deadlock. | |
889 | */ | |
890 | status = ocfs2_try_open_lock(inode, 1); | |
50008630 | 891 | if (status == -EAGAIN) { |
ccd979bd | 892 | status = 0; |
2759236f | 893 | mlog(0, "Skipping delete of %llu because it is in use on " |
b0697053 | 894 | "other nodes\n", (unsigned long long)oi->ip_blkno); |
ccd979bd MF |
895 | goto bail; |
896 | } | |
897 | if (status < 0) { | |
898 | mlog_errno(status); | |
899 | goto bail; | |
900 | } | |
901 | ||
50008630 TY |
902 | *wipe = 1; |
903 | mlog(0, "Inode %llu is ok to wipe from orphan dir %u\n", | |
904 | (unsigned long long)oi->ip_blkno, | |
905 | le16_to_cpu(di->i_orphaned_slot)); | |
ccd979bd MF |
906 | |
907 | bail: | |
908 | return status; | |
909 | } | |
910 | ||
911 | /* Support function for ocfs2_delete_inode. Will help us keep the | |
912 | * inode data in a consistent state for clear_inode. Always truncates | |
913 | * pages, optionally sync's them first. */ | |
914 | static void ocfs2_cleanup_delete_inode(struct inode *inode, | |
915 | int sync_data) | |
916 | { | |
b0697053 MF |
917 | mlog(0, "Cleanup inode %llu, sync = %d\n", |
918 | (unsigned long long)OCFS2_I(inode)->ip_blkno, sync_data); | |
ccd979bd MF |
919 | if (sync_data) |
920 | write_inode_now(inode, 1); | |
921 | truncate_inode_pages(&inode->i_data, 0); | |
922 | } | |
923 | ||
924 | void ocfs2_delete_inode(struct inode *inode) | |
925 | { | |
926 | int wipe, status; | |
927 | sigset_t blocked, oldset; | |
928 | struct buffer_head *di_bh = NULL; | |
929 | ||
930 | mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino); | |
931 | ||
932 | if (is_bad_inode(inode)) { | |
933 | mlog(0, "Skipping delete of bad inode\n"); | |
934 | goto bail; | |
935 | } | |
936 | ||
937 | if (!ocfs2_inode_is_valid_to_delete(inode)) { | |
938 | /* It's probably not necessary to truncate_inode_pages | |
939 | * here but we do it for safety anyway (it will most | |
940 | * likely be a no-op anyway) */ | |
941 | ocfs2_cleanup_delete_inode(inode, 0); | |
942 | goto bail; | |
943 | } | |
944 | ||
945 | /* We want to block signals in delete_inode as the lock and | |
946 | * messaging paths may return us -ERESTARTSYS. Which would | |
947 | * cause us to exit early, resulting in inodes being orphaned | |
948 | * forever. */ | |
949 | sigfillset(&blocked); | |
950 | status = sigprocmask(SIG_BLOCK, &blocked, &oldset); | |
951 | if (status < 0) { | |
952 | mlog_errno(status); | |
953 | ocfs2_cleanup_delete_inode(inode, 1); | |
954 | goto bail; | |
955 | } | |
956 | ||
957 | /* Lock down the inode. This gives us an up to date view of | |
958 | * it's metadata (for verification), and allows us to | |
34d024f8 | 959 | * serialize delete_inode on multiple nodes. |
ccd979bd MF |
960 | * |
961 | * Even though we might be doing a truncate, we don't take the | |
962 | * allocation lock here as it won't be needed - nobody will | |
963 | * have the file open. | |
964 | */ | |
e63aecb6 | 965 | status = ocfs2_inode_lock(inode, &di_bh, 1); |
ccd979bd MF |
966 | if (status < 0) { |
967 | if (status != -ENOENT) | |
968 | mlog_errno(status); | |
969 | ocfs2_cleanup_delete_inode(inode, 0); | |
970 | goto bail_unblock; | |
971 | } | |
972 | ||
973 | /* Query the cluster. This will be the final decision made | |
974 | * before we go ahead and wipe the inode. */ | |
975 | status = ocfs2_query_inode_wipe(inode, di_bh, &wipe); | |
976 | if (!wipe || status < 0) { | |
34d024f8 | 977 | /* Error and remote inode busy both mean we won't be |
ccd979bd MF |
978 | * removing the inode, so they take almost the same |
979 | * path. */ | |
980 | if (status < 0) | |
981 | mlog_errno(status); | |
982 | ||
34d024f8 MF |
983 | /* Someone in the cluster has disallowed a wipe of |
984 | * this inode, or it was never completely | |
985 | * orphaned. Write out the pages and exit now. */ | |
ccd979bd MF |
986 | ocfs2_cleanup_delete_inode(inode, 1); |
987 | goto bail_unlock_inode; | |
988 | } | |
989 | ||
990 | ocfs2_cleanup_delete_inode(inode, 0); | |
991 | ||
992 | status = ocfs2_wipe_inode(inode, di_bh); | |
993 | if (status < 0) { | |
b4df6ed8 MF |
994 | if (status != -EDEADLK) |
995 | mlog_errno(status); | |
ccd979bd MF |
996 | goto bail_unlock_inode; |
997 | } | |
998 | ||
24c19ef4 MF |
999 | /* |
1000 | * Mark the inode as successfully deleted. | |
1001 | * | |
1002 | * This is important for ocfs2_clear_inode() as it will check | |
1003 | * this flag and skip any checkpointing work | |
1004 | * | |
1005 | * ocfs2_stuff_meta_lvb() also uses this flag to invalidate | |
1006 | * the LVB for other nodes. | |
1007 | */ | |
ccd979bd MF |
1008 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_DELETED; |
1009 | ||
1010 | bail_unlock_inode: | |
e63aecb6 | 1011 | ocfs2_inode_unlock(inode, 1); |
ccd979bd MF |
1012 | brelse(di_bh); |
1013 | bail_unblock: | |
1014 | status = sigprocmask(SIG_SETMASK, &oldset, NULL); | |
1015 | if (status < 0) | |
1016 | mlog_errno(status); | |
1017 | bail: | |
1018 | clear_inode(inode); | |
1019 | mlog_exit_void(); | |
1020 | } | |
1021 | ||
1022 | void ocfs2_clear_inode(struct inode *inode) | |
1023 | { | |
1024 | int status; | |
1025 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
1026 | ||
1027 | mlog_entry_void(); | |
1028 | ||
1029 | if (!inode) | |
1030 | goto bail; | |
1031 | ||
b0697053 MF |
1032 | mlog(0, "Clearing inode: %llu, nlink = %u\n", |
1033 | (unsigned long long)OCFS2_I(inode)->ip_blkno, inode->i_nlink); | |
ccd979bd MF |
1034 | |
1035 | mlog_bug_on_msg(OCFS2_SB(inode->i_sb) == NULL, | |
1036 | "Inode=%lu\n", inode->i_ino); | |
1037 | ||
34d024f8 MF |
1038 | /* To preven remote deletes we hold open lock before, now it |
1039 | * is time to unlock PR and EX open locks. */ | |
50008630 TY |
1040 | ocfs2_open_unlock(inode); |
1041 | ||
ccd979bd | 1042 | /* Do these before all the other work so that we don't bounce |
34d024f8 | 1043 | * the downconvert thread while waiting to destroy the locks. */ |
ccd979bd | 1044 | ocfs2_mark_lockres_freeing(&oi->ip_rw_lockres); |
e63aecb6 | 1045 | ocfs2_mark_lockres_freeing(&oi->ip_inode_lockres); |
50008630 | 1046 | ocfs2_mark_lockres_freeing(&oi->ip_open_lockres); |
ccd979bd MF |
1047 | |
1048 | /* We very well may get a clear_inode before all an inodes | |
1049 | * metadata has hit disk. Of course, we can't drop any cluster | |
1050 | * locks until the journal has finished with it. The only | |
1051 | * exception here are successfully wiped inodes - their | |
1052 | * metadata can now be considered to be part of the system | |
1053 | * inodes from which it came. */ | |
1054 | if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED)) | |
1055 | ocfs2_checkpoint_inode(inode); | |
1056 | ||
1057 | mlog_bug_on_msg(!list_empty(&oi->ip_io_markers), | |
b0697053 MF |
1058 | "Clear inode of %llu, inode has io markers\n", |
1059 | (unsigned long long)oi->ip_blkno); | |
ccd979bd | 1060 | |
83418978 MF |
1061 | ocfs2_extent_map_trunc(inode, 0); |
1062 | ||
ccd979bd MF |
1063 | status = ocfs2_drop_inode_locks(inode); |
1064 | if (status < 0) | |
1065 | mlog_errno(status); | |
1066 | ||
1067 | ocfs2_lock_res_free(&oi->ip_rw_lockres); | |
e63aecb6 | 1068 | ocfs2_lock_res_free(&oi->ip_inode_lockres); |
50008630 | 1069 | ocfs2_lock_res_free(&oi->ip_open_lockres); |
ccd979bd MF |
1070 | |
1071 | ocfs2_metadata_cache_purge(inode); | |
1072 | ||
1073 | mlog_bug_on_msg(oi->ip_metadata_cache.ci_num_cached, | |
b0697053 MF |
1074 | "Clear inode of %llu, inode has %u cache items\n", |
1075 | (unsigned long long)oi->ip_blkno, oi->ip_metadata_cache.ci_num_cached); | |
ccd979bd MF |
1076 | |
1077 | mlog_bug_on_msg(!(oi->ip_flags & OCFS2_INODE_CACHE_INLINE), | |
b0697053 MF |
1078 | "Clear inode of %llu, inode has a bad flag\n", |
1079 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
1080 | |
1081 | mlog_bug_on_msg(spin_is_locked(&oi->ip_lock), | |
b0697053 MF |
1082 | "Clear inode of %llu, inode is locked\n", |
1083 | (unsigned long long)oi->ip_blkno); | |
ccd979bd | 1084 | |
251b6ecc | 1085 | mlog_bug_on_msg(!mutex_trylock(&oi->ip_io_mutex), |
b0697053 MF |
1086 | "Clear inode of %llu, io_mutex is locked\n", |
1087 | (unsigned long long)oi->ip_blkno); | |
251b6ecc | 1088 | mutex_unlock(&oi->ip_io_mutex); |
ccd979bd MF |
1089 | |
1090 | /* | |
1091 | * down_trylock() returns 0, down_write_trylock() returns 1 | |
1092 | * kernel 1, world 0 | |
1093 | */ | |
1094 | mlog_bug_on_msg(!down_write_trylock(&oi->ip_alloc_sem), | |
b0697053 MF |
1095 | "Clear inode of %llu, alloc_sem is locked\n", |
1096 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
1097 | up_write(&oi->ip_alloc_sem); |
1098 | ||
1099 | mlog_bug_on_msg(oi->ip_open_count, | |
b0697053 MF |
1100 | "Clear inode of %llu has open count %d\n", |
1101 | (unsigned long long)oi->ip_blkno, oi->ip_open_count); | |
ccd979bd MF |
1102 | |
1103 | /* Clear all other flags. */ | |
1104 | oi->ip_flags = OCFS2_INODE_CACHE_INLINE; | |
1105 | oi->ip_created_trans = 0; | |
1106 | oi->ip_last_trans = 0; | |
1107 | oi->ip_dir_start_lookup = 0; | |
1108 | oi->ip_blkno = 0ULL; | |
2b4e30fb JB |
1109 | jbd2_journal_release_jbd_inode(OCFS2_SB(inode->i_sb)->journal->j_journal, |
1110 | &oi->ip_jinode); | |
ccd979bd MF |
1111 | |
1112 | bail: | |
1113 | mlog_exit_void(); | |
1114 | } | |
1115 | ||
1116 | /* Called under inode_lock, with no more references on the | |
1117 | * struct inode, so it's safe here to check the flags field | |
1118 | * and to manipulate i_nlink without any other locks. */ | |
1119 | void ocfs2_drop_inode(struct inode *inode) | |
1120 | { | |
1121 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
1122 | ||
1123 | mlog_entry_void(); | |
1124 | ||
b0697053 MF |
1125 | mlog(0, "Drop inode %llu, nlink = %u, ip_flags = 0x%x\n", |
1126 | (unsigned long long)oi->ip_blkno, inode->i_nlink, oi->ip_flags); | |
ccd979bd | 1127 | |
379dfe9d MF |
1128 | if (oi->ip_flags & OCFS2_INODE_MAYBE_ORPHANED) |
1129 | generic_delete_inode(inode); | |
1130 | else | |
1131 | generic_drop_inode(inode); | |
ccd979bd MF |
1132 | |
1133 | mlog_exit_void(); | |
1134 | } | |
1135 | ||
ccd979bd MF |
1136 | /* |
1137 | * This is called from our getattr. | |
1138 | */ | |
1139 | int ocfs2_inode_revalidate(struct dentry *dentry) | |
1140 | { | |
1141 | struct inode *inode = dentry->d_inode; | |
1142 | int status = 0; | |
1143 | ||
b0697053 MF |
1144 | mlog_entry("(inode = 0x%p, ino = %llu)\n", inode, |
1145 | inode ? (unsigned long long)OCFS2_I(inode)->ip_blkno : 0ULL); | |
ccd979bd MF |
1146 | |
1147 | if (!inode) { | |
1148 | mlog(0, "eep, no inode!\n"); | |
1149 | status = -ENOENT; | |
1150 | goto bail; | |
1151 | } | |
1152 | ||
1153 | spin_lock(&OCFS2_I(inode)->ip_lock); | |
1154 | if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED) { | |
1155 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
1156 | mlog(0, "inode deleted!\n"); | |
1157 | status = -ENOENT; | |
1158 | goto bail; | |
1159 | } | |
1160 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
1161 | ||
e63aecb6 | 1162 | /* Let ocfs2_inode_lock do the work of updating our struct |
ccd979bd | 1163 | * inode for us. */ |
e63aecb6 | 1164 | status = ocfs2_inode_lock(inode, NULL, 0); |
ccd979bd MF |
1165 | if (status < 0) { |
1166 | if (status != -ENOENT) | |
1167 | mlog_errno(status); | |
1168 | goto bail; | |
1169 | } | |
e63aecb6 | 1170 | ocfs2_inode_unlock(inode, 0); |
ccd979bd MF |
1171 | bail: |
1172 | mlog_exit(status); | |
1173 | ||
1174 | return status; | |
1175 | } | |
1176 | ||
1177 | /* | |
1178 | * Updates a disk inode from a | |
1179 | * struct inode. | |
1180 | * Only takes ip_lock. | |
1181 | */ | |
1fabe148 | 1182 | int ocfs2_mark_inode_dirty(handle_t *handle, |
ccd979bd MF |
1183 | struct inode *inode, |
1184 | struct buffer_head *bh) | |
1185 | { | |
1186 | int status; | |
1187 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) bh->b_data; | |
1188 | ||
b0697053 MF |
1189 | mlog_entry("(inode %llu)\n", |
1190 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd MF |
1191 | |
1192 | status = ocfs2_journal_access(handle, inode, bh, | |
1193 | OCFS2_JOURNAL_ACCESS_WRITE); | |
1194 | if (status < 0) { | |
1195 | mlog_errno(status); | |
1196 | goto leave; | |
1197 | } | |
1198 | ||
1199 | spin_lock(&OCFS2_I(inode)->ip_lock); | |
1200 | fe->i_clusters = cpu_to_le32(OCFS2_I(inode)->ip_clusters); | |
6e4b0d56 | 1201 | ocfs2_get_inode_flags(OCFS2_I(inode)); |
ca4d147e | 1202 | fe->i_attr = cpu_to_le32(OCFS2_I(inode)->ip_attr); |
15b1e36b | 1203 | fe->i_dyn_features = cpu_to_le16(OCFS2_I(inode)->ip_dyn_features); |
ccd979bd MF |
1204 | spin_unlock(&OCFS2_I(inode)->ip_lock); |
1205 | ||
1206 | fe->i_size = cpu_to_le64(i_size_read(inode)); | |
1207 | fe->i_links_count = cpu_to_le16(inode->i_nlink); | |
1208 | fe->i_uid = cpu_to_le32(inode->i_uid); | |
1209 | fe->i_gid = cpu_to_le32(inode->i_gid); | |
1210 | fe->i_mode = cpu_to_le16(inode->i_mode); | |
1211 | fe->i_atime = cpu_to_le64(inode->i_atime.tv_sec); | |
1212 | fe->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); | |
1213 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); | |
1214 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
1215 | fe->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec); | |
1216 | fe->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); | |
1217 | ||
1218 | status = ocfs2_journal_dirty(handle, bh); | |
1219 | if (status < 0) | |
1220 | mlog_errno(status); | |
1221 | ||
1222 | status = 0; | |
1223 | leave: | |
1224 | ||
1225 | mlog_exit(status); | |
1226 | return status; | |
1227 | } | |
1228 | ||
1229 | /* | |
1230 | * | |
1231 | * Updates a struct inode from a disk inode. | |
1232 | * does no i/o, only takes ip_lock. | |
1233 | */ | |
1234 | void ocfs2_refresh_inode(struct inode *inode, | |
1235 | struct ocfs2_dinode *fe) | |
1236 | { | |
ccd979bd MF |
1237 | spin_lock(&OCFS2_I(inode)->ip_lock); |
1238 | ||
1239 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); | |
ca4d147e | 1240 | OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr); |
15b1e36b | 1241 | OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features); |
ca4d147e | 1242 | ocfs2_set_inode_flags(inode); |
ccd979bd MF |
1243 | i_size_write(inode, le64_to_cpu(fe->i_size)); |
1244 | inode->i_nlink = le16_to_cpu(fe->i_links_count); | |
1245 | inode->i_uid = le32_to_cpu(fe->i_uid); | |
1246 | inode->i_gid = le32_to_cpu(fe->i_gid); | |
1247 | inode->i_mode = le16_to_cpu(fe->i_mode); | |
ccd979bd MF |
1248 | if (S_ISLNK(inode->i_mode) && le32_to_cpu(fe->i_clusters) == 0) |
1249 | inode->i_blocks = 0; | |
1250 | else | |
8110b073 | 1251 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd MF |
1252 | inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime); |
1253 | inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec); | |
1254 | inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime); | |
1255 | inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec); | |
1256 | inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime); | |
1257 | inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec); | |
1258 | ||
1259 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
1260 | } |