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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 | ||
24c19ef4 MF |
463 | status = ocfs2_read_block(osb, args->fi_blkno, &bh, 0, |
464 | can_lock ? inode : NULL); | |
ccd979bd MF |
465 | if (status < 0) { |
466 | mlog_errno(status); | |
ccd979bd MF |
467 | goto bail; |
468 | } | |
469 | ||
24c19ef4 | 470 | status = -EINVAL; |
ccd979bd MF |
471 | fe = (struct ocfs2_dinode *) bh->b_data; |
472 | if (!OCFS2_IS_VALID_DINODE(fe)) { | |
a46043e0 MF |
473 | mlog(0, "Invalid dinode #%llu: signature = %.*s\n", |
474 | (unsigned long long)args->fi_blkno, 7, | |
1ca1a111 | 475 | fe->i_signature); |
ccd979bd MF |
476 | goto bail; |
477 | } | |
478 | ||
24c19ef4 MF |
479 | /* |
480 | * This is a code bug. Right now the caller needs to | |
481 | * understand whether it is asking for a system file inode or | |
482 | * not so the proper lock names can be built. | |
483 | */ | |
484 | mlog_bug_on_msg(!!(fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) != | |
485 | !!(args->fi_flags & OCFS2_FI_FLAG_SYSFILE), | |
486 | "Inode %llu: system file state is ambigous\n", | |
487 | (unsigned long long)args->fi_blkno); | |
ccd979bd MF |
488 | |
489 | if (S_ISCHR(le16_to_cpu(fe->i_mode)) || | |
490 | S_ISBLK(le16_to_cpu(fe->i_mode))) | |
491 | inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev)); | |
492 | ||
6a1bd4a5 | 493 | if (ocfs2_populate_inode(inode, fe, 0) < 0) |
ccd979bd | 494 | goto bail; |
ccd979bd MF |
495 | |
496 | BUG_ON(args->fi_blkno != le64_to_cpu(fe->i_blkno)); | |
497 | ||
ccd979bd MF |
498 | status = 0; |
499 | ||
500 | bail: | |
24c19ef4 | 501 | if (can_lock) |
e63aecb6 | 502 | ocfs2_inode_unlock(inode, 0); |
24c19ef4 MF |
503 | |
504 | if (status < 0) | |
505 | make_bad_inode(inode); | |
506 | ||
ccd979bd MF |
507 | if (args && bh) |
508 | brelse(bh); | |
509 | ||
510 | mlog_exit(status); | |
511 | return status; | |
512 | } | |
513 | ||
514 | void ocfs2_sync_blockdev(struct super_block *sb) | |
515 | { | |
516 | sync_blockdev(sb->s_bdev); | |
517 | } | |
518 | ||
519 | static int ocfs2_truncate_for_delete(struct ocfs2_super *osb, | |
520 | struct inode *inode, | |
521 | struct buffer_head *fe_bh) | |
522 | { | |
523 | int status = 0; | |
ccd979bd MF |
524 | struct ocfs2_truncate_context *tc = NULL; |
525 | struct ocfs2_dinode *fe; | |
60b11392 | 526 | handle_t *handle = NULL; |
ccd979bd MF |
527 | |
528 | mlog_entry_void(); | |
529 | ||
530 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
531 | ||
1afc32b9 MF |
532 | /* |
533 | * This check will also skip truncate of inodes with inline | |
534 | * data and fast symlinks. | |
535 | */ | |
3a0782d0 | 536 | if (fe->i_clusters) { |
2b4e30fb JB |
537 | if (ocfs2_should_order_data(inode)) |
538 | ocfs2_begin_ordered_truncate(inode, 0); | |
539 | ||
60b11392 MF |
540 | handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); |
541 | if (IS_ERR(handle)) { | |
542 | status = PTR_ERR(handle); | |
543 | mlog_errno(status); | |
544 | goto out; | |
545 | } | |
546 | ||
547 | status = ocfs2_journal_access(handle, inode, fe_bh, | |
548 | OCFS2_JOURNAL_ACCESS_WRITE); | |
549 | if (status < 0) { | |
550 | mlog_errno(status); | |
551 | goto out; | |
552 | } | |
553 | ||
554 | i_size_write(inode, 0); | |
555 | ||
556 | status = ocfs2_mark_inode_dirty(handle, inode, fe_bh); | |
557 | if (status < 0) { | |
558 | mlog_errno(status); | |
559 | goto out; | |
560 | } | |
561 | ||
562 | ocfs2_commit_trans(osb, handle); | |
563 | handle = NULL; | |
564 | ||
3a0782d0 MF |
565 | status = ocfs2_prepare_truncate(osb, inode, fe_bh, &tc); |
566 | if (status < 0) { | |
567 | mlog_errno(status); | |
568 | goto out; | |
569 | } | |
ccd979bd | 570 | |
3a0782d0 MF |
571 | status = ocfs2_commit_truncate(osb, inode, fe_bh, tc); |
572 | if (status < 0) { | |
573 | mlog_errno(status); | |
574 | goto out; | |
575 | } | |
ccd979bd | 576 | } |
ccd979bd | 577 | |
60b11392 MF |
578 | out: |
579 | if (handle) | |
580 | ocfs2_commit_trans(osb, handle); | |
ccd979bd MF |
581 | mlog_exit(status); |
582 | return status; | |
583 | } | |
584 | ||
585 | static int ocfs2_remove_inode(struct inode *inode, | |
586 | struct buffer_head *di_bh, | |
587 | struct inode *orphan_dir_inode, | |
588 | struct buffer_head *orphan_dir_bh) | |
589 | { | |
590 | int status; | |
591 | struct inode *inode_alloc_inode = NULL; | |
592 | struct buffer_head *inode_alloc_bh = NULL; | |
1fabe148 | 593 | handle_t *handle; |
ccd979bd MF |
594 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
595 | struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data; | |
596 | ||
597 | inode_alloc_inode = | |
598 | ocfs2_get_system_file_inode(osb, INODE_ALLOC_SYSTEM_INODE, | |
599 | le16_to_cpu(di->i_suballoc_slot)); | |
600 | if (!inode_alloc_inode) { | |
601 | status = -EEXIST; | |
602 | mlog_errno(status); | |
603 | goto bail; | |
604 | } | |
605 | ||
1b1dcc1b | 606 | mutex_lock(&inode_alloc_inode->i_mutex); |
e63aecb6 | 607 | status = ocfs2_inode_lock(inode_alloc_inode, &inode_alloc_bh, 1); |
ccd979bd | 608 | if (status < 0) { |
1b1dcc1b | 609 | mutex_unlock(&inode_alloc_inode->i_mutex); |
ccd979bd MF |
610 | |
611 | mlog_errno(status); | |
612 | goto bail; | |
613 | } | |
614 | ||
65eff9cc | 615 | handle = ocfs2_start_trans(osb, OCFS2_DELETE_INODE_CREDITS); |
ccd979bd MF |
616 | if (IS_ERR(handle)) { |
617 | status = PTR_ERR(handle); | |
618 | mlog_errno(status); | |
619 | goto bail_unlock; | |
620 | } | |
621 | ||
622 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
623 | orphan_dir_bh); | |
624 | if (status < 0) { | |
625 | mlog_errno(status); | |
626 | goto bail_commit; | |
627 | } | |
628 | ||
629 | /* set the inodes dtime */ | |
630 | status = ocfs2_journal_access(handle, inode, di_bh, | |
631 | OCFS2_JOURNAL_ACCESS_WRITE); | |
632 | if (status < 0) { | |
633 | mlog_errno(status); | |
634 | goto bail_commit; | |
635 | } | |
636 | ||
637 | di->i_dtime = cpu_to_le64(CURRENT_TIME.tv_sec); | |
4092d49f | 638 | di->i_flags &= cpu_to_le32(~(OCFS2_VALID_FL | OCFS2_ORPHANED_FL)); |
ccd979bd MF |
639 | |
640 | status = ocfs2_journal_dirty(handle, di_bh); | |
641 | if (status < 0) { | |
642 | mlog_errno(status); | |
643 | goto bail_commit; | |
644 | } | |
645 | ||
646 | ocfs2_remove_from_cache(inode, di_bh); | |
647 | ||
648 | status = ocfs2_free_dinode(handle, inode_alloc_inode, | |
649 | inode_alloc_bh, di); | |
650 | if (status < 0) | |
651 | mlog_errno(status); | |
652 | ||
653 | bail_commit: | |
02dc1af4 | 654 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 655 | bail_unlock: |
e63aecb6 | 656 | ocfs2_inode_unlock(inode_alloc_inode, 1); |
1b1dcc1b | 657 | mutex_unlock(&inode_alloc_inode->i_mutex); |
ccd979bd MF |
658 | brelse(inode_alloc_bh); |
659 | bail: | |
660 | iput(inode_alloc_inode); | |
661 | ||
662 | return status; | |
663 | } | |
664 | ||
b4df6ed8 MF |
665 | /* |
666 | * Serialize with orphan dir recovery. If the process doing | |
667 | * recovery on this orphan dir does an iget() with the dir | |
668 | * i_mutex held, we'll deadlock here. Instead we detect this | |
669 | * and exit early - recovery will wipe this inode for us. | |
670 | */ | |
671 | static int ocfs2_check_orphan_recovery_state(struct ocfs2_super *osb, | |
672 | int slot) | |
673 | { | |
674 | int ret = 0; | |
675 | ||
676 | spin_lock(&osb->osb_lock); | |
677 | if (ocfs2_node_map_test_bit(osb, &osb->osb_recovering_orphan_dirs, slot)) { | |
678 | mlog(0, "Recovery is happening on orphan dir %d, will skip " | |
679 | "this inode\n", slot); | |
680 | ret = -EDEADLK; | |
681 | goto out; | |
682 | } | |
683 | /* This signals to the orphan recovery process that it should | |
684 | * wait for us to handle the wipe. */ | |
685 | osb->osb_orphan_wipes[slot]++; | |
686 | out: | |
687 | spin_unlock(&osb->osb_lock); | |
688 | return ret; | |
689 | } | |
690 | ||
691 | static void ocfs2_signal_wipe_completion(struct ocfs2_super *osb, | |
692 | int slot) | |
693 | { | |
694 | spin_lock(&osb->osb_lock); | |
695 | osb->osb_orphan_wipes[slot]--; | |
696 | spin_unlock(&osb->osb_lock); | |
697 | ||
698 | wake_up(&osb->osb_wipe_event); | |
699 | } | |
700 | ||
ccd979bd MF |
701 | static int ocfs2_wipe_inode(struct inode *inode, |
702 | struct buffer_head *di_bh) | |
703 | { | |
704 | int status, orphaned_slot; | |
705 | struct inode *orphan_dir_inode = NULL; | |
706 | struct buffer_head *orphan_dir_bh = NULL; | |
707 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
50008630 | 708 | struct ocfs2_dinode *di; |
ccd979bd | 709 | |
50008630 TY |
710 | di = (struct ocfs2_dinode *) di_bh->b_data; |
711 | orphaned_slot = le16_to_cpu(di->i_orphaned_slot); | |
b4df6ed8 MF |
712 | |
713 | status = ocfs2_check_orphan_recovery_state(osb, orphaned_slot); | |
714 | if (status) | |
715 | return status; | |
716 | ||
ccd979bd MF |
717 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, |
718 | ORPHAN_DIR_SYSTEM_INODE, | |
719 | orphaned_slot); | |
720 | if (!orphan_dir_inode) { | |
721 | status = -EEXIST; | |
722 | mlog_errno(status); | |
723 | goto bail; | |
724 | } | |
725 | ||
726 | /* Lock the orphan dir. The lock will be held for the entire | |
727 | * delete_inode operation. We do this now to avoid races with | |
728 | * recovery completion on other nodes. */ | |
1b1dcc1b | 729 | mutex_lock(&orphan_dir_inode->i_mutex); |
e63aecb6 | 730 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
ccd979bd | 731 | if (status < 0) { |
1b1dcc1b | 732 | mutex_unlock(&orphan_dir_inode->i_mutex); |
ccd979bd MF |
733 | |
734 | mlog_errno(status); | |
735 | goto bail; | |
736 | } | |
737 | ||
738 | /* we do this while holding the orphan dir lock because we | |
34d024f8 MF |
739 | * don't want recovery being run from another node to try an |
740 | * inode delete underneath us -- this will result in two nodes | |
ccd979bd MF |
741 | * truncating the same file! */ |
742 | status = ocfs2_truncate_for_delete(osb, inode, di_bh); | |
743 | if (status < 0) { | |
744 | mlog_errno(status); | |
745 | goto bail_unlock_dir; | |
746 | } | |
747 | ||
cf1d6c76 TY |
748 | /*Free extended attribute resources associated with this inode.*/ |
749 | status = ocfs2_xattr_remove(inode, di_bh); | |
750 | if (status < 0) { | |
751 | mlog_errno(status); | |
752 | goto bail_unlock_dir; | |
753 | } | |
754 | ||
ccd979bd MF |
755 | status = ocfs2_remove_inode(inode, di_bh, orphan_dir_inode, |
756 | orphan_dir_bh); | |
757 | if (status < 0) | |
758 | mlog_errno(status); | |
759 | ||
760 | bail_unlock_dir: | |
e63aecb6 | 761 | ocfs2_inode_unlock(orphan_dir_inode, 1); |
1b1dcc1b | 762 | mutex_unlock(&orphan_dir_inode->i_mutex); |
ccd979bd MF |
763 | brelse(orphan_dir_bh); |
764 | bail: | |
765 | iput(orphan_dir_inode); | |
b4df6ed8 | 766 | ocfs2_signal_wipe_completion(osb, orphaned_slot); |
ccd979bd MF |
767 | |
768 | return status; | |
769 | } | |
770 | ||
771 | /* There is a series of simple checks that should be done before a | |
34d024f8 | 772 | * trylock is even considered. Encapsulate those in this function. */ |
ccd979bd MF |
773 | static int ocfs2_inode_is_valid_to_delete(struct inode *inode) |
774 | { | |
775 | int ret = 0; | |
776 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
777 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
778 | ||
779 | /* We shouldn't be getting here for the root directory | |
780 | * inode.. */ | |
781 | if (inode == osb->root_inode) { | |
782 | mlog(ML_ERROR, "Skipping delete of root inode.\n"); | |
783 | goto bail; | |
784 | } | |
785 | ||
34d024f8 | 786 | /* If we're coming from downconvert_thread we can't go into our own |
ccd979bd MF |
787 | * voting [hello, deadlock city!], so unforuntately we just |
788 | * have to skip deleting this guy. That's OK though because | |
789 | * the node who's doing the actual deleting should handle it | |
790 | * anyway. */ | |
34d024f8 | 791 | if (current == osb->dc_task) { |
ccd979bd | 792 | mlog(0, "Skipping delete of %lu because we're currently " |
34d024f8 | 793 | "in downconvert\n", inode->i_ino); |
ccd979bd MF |
794 | goto bail; |
795 | } | |
796 | ||
797 | spin_lock(&oi->ip_lock); | |
798 | /* OCFS2 *never* deletes system files. This should technically | |
799 | * never get here as system file inodes should always have a | |
800 | * positive link count. */ | |
801 | if (oi->ip_flags & OCFS2_INODE_SYSTEM_FILE) { | |
b0697053 MF |
802 | mlog(ML_ERROR, "Skipping delete of system file %llu\n", |
803 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
804 | goto bail_unlock; |
805 | } | |
806 | ||
34d024f8 MF |
807 | /* If we have allowd wipe of this inode for another node, it |
808 | * will be marked here so we can safely skip it. Recovery will | |
809 | * cleanup any inodes we might inadvertantly skip here. */ | |
ccd979bd MF |
810 | if (oi->ip_flags & OCFS2_INODE_SKIP_DELETE) { |
811 | mlog(0, "Skipping delete of %lu because another node " | |
812 | "has done this for us.\n", inode->i_ino); | |
813 | goto bail_unlock; | |
814 | } | |
815 | ||
816 | ret = 1; | |
817 | bail_unlock: | |
818 | spin_unlock(&oi->ip_lock); | |
819 | bail: | |
820 | return ret; | |
821 | } | |
822 | ||
823 | /* Query the cluster to determine whether we should wipe an inode from | |
824 | * disk or not. | |
825 | * | |
826 | * Requires the inode to have the cluster lock. */ | |
827 | static int ocfs2_query_inode_wipe(struct inode *inode, | |
828 | struct buffer_head *di_bh, | |
829 | int *wipe) | |
830 | { | |
831 | int status = 0; | |
832 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
833 | struct ocfs2_dinode *di; | |
834 | ||
835 | *wipe = 0; | |
836 | ||
837 | /* While we were waiting for the cluster lock in | |
838 | * ocfs2_delete_inode, another node might have asked to delete | |
839 | * the inode. Recheck our flags to catch this. */ | |
840 | if (!ocfs2_inode_is_valid_to_delete(inode)) { | |
b0697053 MF |
841 | mlog(0, "Skipping delete of %llu because flags changed\n", |
842 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
843 | goto bail; |
844 | } | |
845 | ||
846 | /* Now that we have an up to date inode, we can double check | |
847 | * the link count. */ | |
848 | if (inode->i_nlink) { | |
b0697053 MF |
849 | mlog(0, "Skipping delete of %llu because nlink = %u\n", |
850 | (unsigned long long)oi->ip_blkno, inode->i_nlink); | |
ccd979bd MF |
851 | goto bail; |
852 | } | |
853 | ||
854 | /* Do some basic inode verification... */ | |
855 | di = (struct ocfs2_dinode *) di_bh->b_data; | |
856 | if (!(di->i_flags & cpu_to_le32(OCFS2_ORPHANED_FL))) { | |
857 | /* for lack of a better error? */ | |
858 | status = -EEXIST; | |
859 | mlog(ML_ERROR, | |
b0697053 | 860 | "Inode %llu (on-disk %llu) not orphaned! " |
ccd979bd | 861 | "Disk flags 0x%x, inode flags 0x%x\n", |
b0697053 | 862 | (unsigned long long)oi->ip_blkno, |
1ca1a111 MF |
863 | (unsigned long long)le64_to_cpu(di->i_blkno), |
864 | le32_to_cpu(di->i_flags), oi->ip_flags); | |
ccd979bd MF |
865 | goto bail; |
866 | } | |
867 | ||
868 | /* has someone already deleted us?! baaad... */ | |
869 | if (di->i_dtime) { | |
870 | status = -EEXIST; | |
871 | mlog_errno(status); | |
872 | goto bail; | |
873 | } | |
874 | ||
6f16bf65 MF |
875 | /* |
876 | * This is how ocfs2 determines whether an inode is still live | |
877 | * within the cluster. Every node takes a shared read lock on | |
878 | * the inode open lock in ocfs2_read_locked_inode(). When we | |
879 | * get to ->delete_inode(), each node tries to convert it's | |
880 | * lock to an exclusive. Trylocks are serialized by the inode | |
881 | * meta data lock. If the upconvert suceeds, we know the inode | |
882 | * is no longer live and can be deleted. | |
883 | * | |
884 | * Though we call this with the meta data lock held, the | |
885 | * trylock keeps us from ABBA deadlock. | |
886 | */ | |
887 | status = ocfs2_try_open_lock(inode, 1); | |
50008630 | 888 | if (status == -EAGAIN) { |
ccd979bd | 889 | status = 0; |
2759236f | 890 | mlog(0, "Skipping delete of %llu because it is in use on " |
b0697053 | 891 | "other nodes\n", (unsigned long long)oi->ip_blkno); |
ccd979bd MF |
892 | goto bail; |
893 | } | |
894 | if (status < 0) { | |
895 | mlog_errno(status); | |
896 | goto bail; | |
897 | } | |
898 | ||
50008630 TY |
899 | *wipe = 1; |
900 | mlog(0, "Inode %llu is ok to wipe from orphan dir %u\n", | |
901 | (unsigned long long)oi->ip_blkno, | |
902 | le16_to_cpu(di->i_orphaned_slot)); | |
ccd979bd MF |
903 | |
904 | bail: | |
905 | return status; | |
906 | } | |
907 | ||
908 | /* Support function for ocfs2_delete_inode. Will help us keep the | |
909 | * inode data in a consistent state for clear_inode. Always truncates | |
910 | * pages, optionally sync's them first. */ | |
911 | static void ocfs2_cleanup_delete_inode(struct inode *inode, | |
912 | int sync_data) | |
913 | { | |
b0697053 MF |
914 | mlog(0, "Cleanup inode %llu, sync = %d\n", |
915 | (unsigned long long)OCFS2_I(inode)->ip_blkno, sync_data); | |
ccd979bd MF |
916 | if (sync_data) |
917 | write_inode_now(inode, 1); | |
918 | truncate_inode_pages(&inode->i_data, 0); | |
919 | } | |
920 | ||
921 | void ocfs2_delete_inode(struct inode *inode) | |
922 | { | |
923 | int wipe, status; | |
924 | sigset_t blocked, oldset; | |
925 | struct buffer_head *di_bh = NULL; | |
926 | ||
927 | mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino); | |
928 | ||
929 | if (is_bad_inode(inode)) { | |
930 | mlog(0, "Skipping delete of bad inode\n"); | |
931 | goto bail; | |
932 | } | |
933 | ||
934 | if (!ocfs2_inode_is_valid_to_delete(inode)) { | |
935 | /* It's probably not necessary to truncate_inode_pages | |
936 | * here but we do it for safety anyway (it will most | |
937 | * likely be a no-op anyway) */ | |
938 | ocfs2_cleanup_delete_inode(inode, 0); | |
939 | goto bail; | |
940 | } | |
941 | ||
942 | /* We want to block signals in delete_inode as the lock and | |
943 | * messaging paths may return us -ERESTARTSYS. Which would | |
944 | * cause us to exit early, resulting in inodes being orphaned | |
945 | * forever. */ | |
946 | sigfillset(&blocked); | |
947 | status = sigprocmask(SIG_BLOCK, &blocked, &oldset); | |
948 | if (status < 0) { | |
949 | mlog_errno(status); | |
950 | ocfs2_cleanup_delete_inode(inode, 1); | |
951 | goto bail; | |
952 | } | |
953 | ||
954 | /* Lock down the inode. This gives us an up to date view of | |
955 | * it's metadata (for verification), and allows us to | |
34d024f8 | 956 | * serialize delete_inode on multiple nodes. |
ccd979bd MF |
957 | * |
958 | * Even though we might be doing a truncate, we don't take the | |
959 | * allocation lock here as it won't be needed - nobody will | |
960 | * have the file open. | |
961 | */ | |
e63aecb6 | 962 | status = ocfs2_inode_lock(inode, &di_bh, 1); |
ccd979bd MF |
963 | if (status < 0) { |
964 | if (status != -ENOENT) | |
965 | mlog_errno(status); | |
966 | ocfs2_cleanup_delete_inode(inode, 0); | |
967 | goto bail_unblock; | |
968 | } | |
969 | ||
970 | /* Query the cluster. This will be the final decision made | |
971 | * before we go ahead and wipe the inode. */ | |
972 | status = ocfs2_query_inode_wipe(inode, di_bh, &wipe); | |
973 | if (!wipe || status < 0) { | |
34d024f8 | 974 | /* Error and remote inode busy both mean we won't be |
ccd979bd MF |
975 | * removing the inode, so they take almost the same |
976 | * path. */ | |
977 | if (status < 0) | |
978 | mlog_errno(status); | |
979 | ||
34d024f8 MF |
980 | /* Someone in the cluster has disallowed a wipe of |
981 | * this inode, or it was never completely | |
982 | * orphaned. Write out the pages and exit now. */ | |
ccd979bd MF |
983 | ocfs2_cleanup_delete_inode(inode, 1); |
984 | goto bail_unlock_inode; | |
985 | } | |
986 | ||
987 | ocfs2_cleanup_delete_inode(inode, 0); | |
988 | ||
989 | status = ocfs2_wipe_inode(inode, di_bh); | |
990 | if (status < 0) { | |
b4df6ed8 MF |
991 | if (status != -EDEADLK) |
992 | mlog_errno(status); | |
ccd979bd MF |
993 | goto bail_unlock_inode; |
994 | } | |
995 | ||
24c19ef4 MF |
996 | /* |
997 | * Mark the inode as successfully deleted. | |
998 | * | |
999 | * This is important for ocfs2_clear_inode() as it will check | |
1000 | * this flag and skip any checkpointing work | |
1001 | * | |
1002 | * ocfs2_stuff_meta_lvb() also uses this flag to invalidate | |
1003 | * the LVB for other nodes. | |
1004 | */ | |
ccd979bd MF |
1005 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_DELETED; |
1006 | ||
1007 | bail_unlock_inode: | |
e63aecb6 | 1008 | ocfs2_inode_unlock(inode, 1); |
ccd979bd MF |
1009 | brelse(di_bh); |
1010 | bail_unblock: | |
1011 | status = sigprocmask(SIG_SETMASK, &oldset, NULL); | |
1012 | if (status < 0) | |
1013 | mlog_errno(status); | |
1014 | bail: | |
1015 | clear_inode(inode); | |
1016 | mlog_exit_void(); | |
1017 | } | |
1018 | ||
1019 | void ocfs2_clear_inode(struct inode *inode) | |
1020 | { | |
1021 | int status; | |
1022 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
1023 | ||
1024 | mlog_entry_void(); | |
1025 | ||
1026 | if (!inode) | |
1027 | goto bail; | |
1028 | ||
b0697053 MF |
1029 | mlog(0, "Clearing inode: %llu, nlink = %u\n", |
1030 | (unsigned long long)OCFS2_I(inode)->ip_blkno, inode->i_nlink); | |
ccd979bd MF |
1031 | |
1032 | mlog_bug_on_msg(OCFS2_SB(inode->i_sb) == NULL, | |
1033 | "Inode=%lu\n", inode->i_ino); | |
1034 | ||
34d024f8 MF |
1035 | /* To preven remote deletes we hold open lock before, now it |
1036 | * is time to unlock PR and EX open locks. */ | |
50008630 TY |
1037 | ocfs2_open_unlock(inode); |
1038 | ||
ccd979bd | 1039 | /* Do these before all the other work so that we don't bounce |
34d024f8 | 1040 | * the downconvert thread while waiting to destroy the locks. */ |
ccd979bd | 1041 | ocfs2_mark_lockres_freeing(&oi->ip_rw_lockres); |
e63aecb6 | 1042 | ocfs2_mark_lockres_freeing(&oi->ip_inode_lockres); |
50008630 | 1043 | ocfs2_mark_lockres_freeing(&oi->ip_open_lockres); |
ccd979bd MF |
1044 | |
1045 | /* We very well may get a clear_inode before all an inodes | |
1046 | * metadata has hit disk. Of course, we can't drop any cluster | |
1047 | * locks until the journal has finished with it. The only | |
1048 | * exception here are successfully wiped inodes - their | |
1049 | * metadata can now be considered to be part of the system | |
1050 | * inodes from which it came. */ | |
1051 | if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED)) | |
1052 | ocfs2_checkpoint_inode(inode); | |
1053 | ||
1054 | mlog_bug_on_msg(!list_empty(&oi->ip_io_markers), | |
b0697053 MF |
1055 | "Clear inode of %llu, inode has io markers\n", |
1056 | (unsigned long long)oi->ip_blkno); | |
ccd979bd | 1057 | |
83418978 MF |
1058 | ocfs2_extent_map_trunc(inode, 0); |
1059 | ||
ccd979bd MF |
1060 | status = ocfs2_drop_inode_locks(inode); |
1061 | if (status < 0) | |
1062 | mlog_errno(status); | |
1063 | ||
1064 | ocfs2_lock_res_free(&oi->ip_rw_lockres); | |
e63aecb6 | 1065 | ocfs2_lock_res_free(&oi->ip_inode_lockres); |
50008630 | 1066 | ocfs2_lock_res_free(&oi->ip_open_lockres); |
ccd979bd MF |
1067 | |
1068 | ocfs2_metadata_cache_purge(inode); | |
1069 | ||
1070 | mlog_bug_on_msg(oi->ip_metadata_cache.ci_num_cached, | |
b0697053 MF |
1071 | "Clear inode of %llu, inode has %u cache items\n", |
1072 | (unsigned long long)oi->ip_blkno, oi->ip_metadata_cache.ci_num_cached); | |
ccd979bd MF |
1073 | |
1074 | mlog_bug_on_msg(!(oi->ip_flags & OCFS2_INODE_CACHE_INLINE), | |
b0697053 MF |
1075 | "Clear inode of %llu, inode has a bad flag\n", |
1076 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
1077 | |
1078 | mlog_bug_on_msg(spin_is_locked(&oi->ip_lock), | |
b0697053 MF |
1079 | "Clear inode of %llu, inode is locked\n", |
1080 | (unsigned long long)oi->ip_blkno); | |
ccd979bd | 1081 | |
251b6ecc | 1082 | mlog_bug_on_msg(!mutex_trylock(&oi->ip_io_mutex), |
b0697053 MF |
1083 | "Clear inode of %llu, io_mutex is locked\n", |
1084 | (unsigned long long)oi->ip_blkno); | |
251b6ecc | 1085 | mutex_unlock(&oi->ip_io_mutex); |
ccd979bd MF |
1086 | |
1087 | /* | |
1088 | * down_trylock() returns 0, down_write_trylock() returns 1 | |
1089 | * kernel 1, world 0 | |
1090 | */ | |
1091 | mlog_bug_on_msg(!down_write_trylock(&oi->ip_alloc_sem), | |
b0697053 MF |
1092 | "Clear inode of %llu, alloc_sem is locked\n", |
1093 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
1094 | up_write(&oi->ip_alloc_sem); |
1095 | ||
1096 | mlog_bug_on_msg(oi->ip_open_count, | |
b0697053 MF |
1097 | "Clear inode of %llu has open count %d\n", |
1098 | (unsigned long long)oi->ip_blkno, oi->ip_open_count); | |
ccd979bd MF |
1099 | |
1100 | /* Clear all other flags. */ | |
1101 | oi->ip_flags = OCFS2_INODE_CACHE_INLINE; | |
1102 | oi->ip_created_trans = 0; | |
1103 | oi->ip_last_trans = 0; | |
1104 | oi->ip_dir_start_lookup = 0; | |
1105 | oi->ip_blkno = 0ULL; | |
2b4e30fb JB |
1106 | jbd2_journal_release_jbd_inode(OCFS2_SB(inode->i_sb)->journal->j_journal, |
1107 | &oi->ip_jinode); | |
ccd979bd MF |
1108 | |
1109 | bail: | |
1110 | mlog_exit_void(); | |
1111 | } | |
1112 | ||
1113 | /* Called under inode_lock, with no more references on the | |
1114 | * struct inode, so it's safe here to check the flags field | |
1115 | * and to manipulate i_nlink without any other locks. */ | |
1116 | void ocfs2_drop_inode(struct inode *inode) | |
1117 | { | |
1118 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
1119 | ||
1120 | mlog_entry_void(); | |
1121 | ||
b0697053 MF |
1122 | mlog(0, "Drop inode %llu, nlink = %u, ip_flags = 0x%x\n", |
1123 | (unsigned long long)oi->ip_blkno, inode->i_nlink, oi->ip_flags); | |
ccd979bd | 1124 | |
379dfe9d MF |
1125 | if (oi->ip_flags & OCFS2_INODE_MAYBE_ORPHANED) |
1126 | generic_delete_inode(inode); | |
1127 | else | |
1128 | generic_drop_inode(inode); | |
ccd979bd MF |
1129 | |
1130 | mlog_exit_void(); | |
1131 | } | |
1132 | ||
1133 | /* | |
1134 | * TODO: this should probably be merged into ocfs2_get_block | |
1135 | * | |
1136 | * However, you now need to pay attention to the cont_prepare_write() | |
1137 | * stuff in ocfs2_get_block (that is, ocfs2_get_block pretty much | |
1138 | * expects never to extend). | |
1139 | */ | |
1140 | struct buffer_head *ocfs2_bread(struct inode *inode, | |
1141 | int block, int *err, int reada) | |
1142 | { | |
1143 | struct buffer_head *bh = NULL; | |
1144 | int tmperr; | |
1145 | u64 p_blkno; | |
1146 | int readflags = OCFS2_BH_CACHED; | |
1147 | ||
ccd979bd MF |
1148 | if (reada) |
1149 | readflags |= OCFS2_BH_READAHEAD; | |
ccd979bd MF |
1150 | |
1151 | if (((u64)block << inode->i_sb->s_blocksize_bits) >= | |
1152 | i_size_read(inode)) { | |
1153 | BUG_ON(!reada); | |
1154 | return NULL; | |
1155 | } | |
1156 | ||
ee19a779 | 1157 | down_read(&OCFS2_I(inode)->ip_alloc_sem); |
49cb8d2d MF |
1158 | tmperr = ocfs2_extent_map_get_blocks(inode, block, &p_blkno, NULL, |
1159 | NULL); | |
ee19a779 | 1160 | up_read(&OCFS2_I(inode)->ip_alloc_sem); |
ccd979bd MF |
1161 | if (tmperr < 0) { |
1162 | mlog_errno(tmperr); | |
1163 | goto fail; | |
1164 | } | |
1165 | ||
1166 | tmperr = ocfs2_read_block(OCFS2_SB(inode->i_sb), p_blkno, &bh, | |
1167 | readflags, inode); | |
1168 | if (tmperr < 0) | |
1169 | goto fail; | |
1170 | ||
1171 | tmperr = 0; | |
1172 | ||
1173 | *err = 0; | |
1174 | return bh; | |
1175 | ||
1176 | fail: | |
1177 | if (bh) { | |
1178 | brelse(bh); | |
1179 | bh = NULL; | |
1180 | } | |
1181 | *err = -EIO; | |
1182 | return NULL; | |
1183 | } | |
1184 | ||
1185 | /* | |
1186 | * This is called from our getattr. | |
1187 | */ | |
1188 | int ocfs2_inode_revalidate(struct dentry *dentry) | |
1189 | { | |
1190 | struct inode *inode = dentry->d_inode; | |
1191 | int status = 0; | |
1192 | ||
b0697053 MF |
1193 | mlog_entry("(inode = 0x%p, ino = %llu)\n", inode, |
1194 | inode ? (unsigned long long)OCFS2_I(inode)->ip_blkno : 0ULL); | |
ccd979bd MF |
1195 | |
1196 | if (!inode) { | |
1197 | mlog(0, "eep, no inode!\n"); | |
1198 | status = -ENOENT; | |
1199 | goto bail; | |
1200 | } | |
1201 | ||
1202 | spin_lock(&OCFS2_I(inode)->ip_lock); | |
1203 | if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED) { | |
1204 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
1205 | mlog(0, "inode deleted!\n"); | |
1206 | status = -ENOENT; | |
1207 | goto bail; | |
1208 | } | |
1209 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
1210 | ||
e63aecb6 | 1211 | /* Let ocfs2_inode_lock do the work of updating our struct |
ccd979bd | 1212 | * inode for us. */ |
e63aecb6 | 1213 | status = ocfs2_inode_lock(inode, NULL, 0); |
ccd979bd MF |
1214 | if (status < 0) { |
1215 | if (status != -ENOENT) | |
1216 | mlog_errno(status); | |
1217 | goto bail; | |
1218 | } | |
e63aecb6 | 1219 | ocfs2_inode_unlock(inode, 0); |
ccd979bd MF |
1220 | bail: |
1221 | mlog_exit(status); | |
1222 | ||
1223 | return status; | |
1224 | } | |
1225 | ||
1226 | /* | |
1227 | * Updates a disk inode from a | |
1228 | * struct inode. | |
1229 | * Only takes ip_lock. | |
1230 | */ | |
1fabe148 | 1231 | int ocfs2_mark_inode_dirty(handle_t *handle, |
ccd979bd MF |
1232 | struct inode *inode, |
1233 | struct buffer_head *bh) | |
1234 | { | |
1235 | int status; | |
1236 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) bh->b_data; | |
1237 | ||
b0697053 MF |
1238 | mlog_entry("(inode %llu)\n", |
1239 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd MF |
1240 | |
1241 | status = ocfs2_journal_access(handle, inode, bh, | |
1242 | OCFS2_JOURNAL_ACCESS_WRITE); | |
1243 | if (status < 0) { | |
1244 | mlog_errno(status); | |
1245 | goto leave; | |
1246 | } | |
1247 | ||
1248 | spin_lock(&OCFS2_I(inode)->ip_lock); | |
1249 | fe->i_clusters = cpu_to_le32(OCFS2_I(inode)->ip_clusters); | |
6e4b0d56 | 1250 | ocfs2_get_inode_flags(OCFS2_I(inode)); |
ca4d147e | 1251 | fe->i_attr = cpu_to_le32(OCFS2_I(inode)->ip_attr); |
15b1e36b | 1252 | fe->i_dyn_features = cpu_to_le16(OCFS2_I(inode)->ip_dyn_features); |
ccd979bd MF |
1253 | spin_unlock(&OCFS2_I(inode)->ip_lock); |
1254 | ||
1255 | fe->i_size = cpu_to_le64(i_size_read(inode)); | |
1256 | fe->i_links_count = cpu_to_le16(inode->i_nlink); | |
1257 | fe->i_uid = cpu_to_le32(inode->i_uid); | |
1258 | fe->i_gid = cpu_to_le32(inode->i_gid); | |
1259 | fe->i_mode = cpu_to_le16(inode->i_mode); | |
1260 | fe->i_atime = cpu_to_le64(inode->i_atime.tv_sec); | |
1261 | fe->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); | |
1262 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); | |
1263 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
1264 | fe->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec); | |
1265 | fe->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); | |
1266 | ||
1267 | status = ocfs2_journal_dirty(handle, bh); | |
1268 | if (status < 0) | |
1269 | mlog_errno(status); | |
1270 | ||
1271 | status = 0; | |
1272 | leave: | |
1273 | ||
1274 | mlog_exit(status); | |
1275 | return status; | |
1276 | } | |
1277 | ||
1278 | /* | |
1279 | * | |
1280 | * Updates a struct inode from a disk inode. | |
1281 | * does no i/o, only takes ip_lock. | |
1282 | */ | |
1283 | void ocfs2_refresh_inode(struct inode *inode, | |
1284 | struct ocfs2_dinode *fe) | |
1285 | { | |
ccd979bd MF |
1286 | spin_lock(&OCFS2_I(inode)->ip_lock); |
1287 | ||
1288 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); | |
ca4d147e | 1289 | OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr); |
15b1e36b | 1290 | OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features); |
ca4d147e | 1291 | ocfs2_set_inode_flags(inode); |
ccd979bd MF |
1292 | i_size_write(inode, le64_to_cpu(fe->i_size)); |
1293 | inode->i_nlink = le16_to_cpu(fe->i_links_count); | |
1294 | inode->i_uid = le32_to_cpu(fe->i_uid); | |
1295 | inode->i_gid = le32_to_cpu(fe->i_gid); | |
1296 | inode->i_mode = le16_to_cpu(fe->i_mode); | |
ccd979bd MF |
1297 | if (S_ISLNK(inode->i_mode) && le32_to_cpu(fe->i_clusters) == 0) |
1298 | inode->i_blocks = 0; | |
1299 | else | |
8110b073 | 1300 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd MF |
1301 | inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime); |
1302 | inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec); | |
1303 | inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime); | |
1304 | inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec); | |
1305 | inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime); | |
1306 | inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec); | |
1307 | ||
1308 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
1309 | } |