blob: 0297fb8982b861afdae1d974e9fdae96bf0a1f13 [file] [log] [blame]
Mark Fashehccd979b2005-12-15 14:31:24 -08001/* -*- 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>
Jan Karaa90714c2008-10-09 19:38:40 +020031#include <linux/quotaops.h>
Mark Fashehccd979b2005-12-15 14:31:24 -080032
33#include <asm/byteorder.h>
34
35#define MLOG_MASK_PREFIX ML_INODE
36#include <cluster/masklog.h>
37
38#include "ocfs2.h"
39
40#include "alloc.h"
Mark Fasheh9b7895e2008-11-12 16:27:44 -080041#include "dir.h"
Joel Beckerd6b32bb2008-10-17 14:55:01 -070042#include "blockcheck.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080043#include "dlmglue.h"
44#include "extent_map.h"
45#include "file.h"
Mark Fashehb4df6ed2006-02-22 17:35:08 -080046#include "heartbeat.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080047#include "inode.h"
48#include "journal.h"
49#include "namei.h"
50#include "suballoc.h"
51#include "super.h"
52#include "symlink.h"
53#include "sysfile.h"
54#include "uptodate.h"
Tiger Yangcf1d6c72008-08-18 17:11:00 +080055#include "xattr.h"
Tao Ma8b2c0db2009-08-18 11:43:49 +080056#include "refcounttree.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080057
58#include "buffer_head_io.h"
59
Mark Fashehccd979b2005-12-15 14:31:24 -080060struct ocfs2_find_inode_args
61{
62 u64 fi_blkno;
63 unsigned long fi_ino;
64 unsigned int fi_flags;
Jan Kara5fa06132008-01-11 00:11:45 +010065 unsigned int fi_sysfile_type;
Mark Fashehccd979b2005-12-15 14:31:24 -080066};
67
Jan Kara5fa06132008-01-11 00:11:45 +010068static struct lock_class_key ocfs2_sysfile_lock_key[NUM_SYSTEM_INODES];
69
Mark Fashehccd979b2005-12-15 14:31:24 -080070static int ocfs2_read_locked_inode(struct inode *inode,
71 struct ocfs2_find_inode_args *args);
72static int ocfs2_init_locked_inode(struct inode *inode, void *opaque);
73static int ocfs2_find_actor(struct inode *inode, void *opaque);
74static int ocfs2_truncate_for_delete(struct ocfs2_super *osb,
75 struct inode *inode,
76 struct buffer_head *fe_bh);
77
Herbert Poetzlca4d1472006-07-03 17:27:12 -070078void ocfs2_set_inode_flags(struct inode *inode)
79{
80 unsigned int flags = OCFS2_I(inode)->ip_attr;
81
82 inode->i_flags &= ~(S_IMMUTABLE |
83 S_SYNC | S_APPEND | S_NOATIME | S_DIRSYNC);
84
85 if (flags & OCFS2_IMMUTABLE_FL)
86 inode->i_flags |= S_IMMUTABLE;
87
88 if (flags & OCFS2_SYNC_FL)
89 inode->i_flags |= S_SYNC;
90 if (flags & OCFS2_APPEND_FL)
91 inode->i_flags |= S_APPEND;
92 if (flags & OCFS2_NOATIME_FL)
93 inode->i_flags |= S_NOATIME;
94 if (flags & OCFS2_DIRSYNC_FL)
95 inode->i_flags |= S_DIRSYNC;
96}
97
Jan Kara6e4b0d52007-04-27 11:08:01 -070098/* Propagate flags from i_flags to OCFS2_I(inode)->ip_attr */
99void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi)
100{
101 unsigned int flags = oi->vfs_inode.i_flags;
102
103 oi->ip_attr &= ~(OCFS2_SYNC_FL|OCFS2_APPEND_FL|
104 OCFS2_IMMUTABLE_FL|OCFS2_NOATIME_FL|OCFS2_DIRSYNC_FL);
105 if (flags & S_SYNC)
106 oi->ip_attr |= OCFS2_SYNC_FL;
107 if (flags & S_APPEND)
108 oi->ip_attr |= OCFS2_APPEND_FL;
109 if (flags & S_IMMUTABLE)
110 oi->ip_attr |= OCFS2_IMMUTABLE_FL;
111 if (flags & S_NOATIME)
112 oi->ip_attr |= OCFS2_NOATIME_FL;
113 if (flags & S_DIRSYNC)
114 oi->ip_attr |= OCFS2_DIRSYNC_FL;
115}
116
wengang wang6ca497a2009-03-06 21:29:10 +0800117struct inode *ocfs2_ilookup(struct super_block *sb, u64 blkno)
118{
119 struct ocfs2_find_inode_args args;
120
121 args.fi_blkno = blkno;
122 args.fi_flags = 0;
123 args.fi_ino = ino_from_blkno(sb, blkno);
124 args.fi_sysfile_type = 0;
125
126 return ilookup5(sb, blkno, ocfs2_find_actor, &args);
127}
Jan Kara5fa06132008-01-11 00:11:45 +0100128struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 blkno, unsigned flags,
129 int sysfile_type)
Mark Fashehccd979b2005-12-15 14:31:24 -0800130{
131 struct inode *inode = NULL;
132 struct super_block *sb = osb->sb;
133 struct ocfs2_find_inode_args args;
134
Mark Fashehb06970532006-03-03 10:24:33 -0800135 mlog_entry("(blkno = %llu)\n", (unsigned long long)blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -0800136
137 /* Ok. By now we've either got the offsets passed to us by the
138 * caller, or we just pulled them off the bh. Lets do some
139 * sanity checks to make sure they're OK. */
140 if (blkno == 0) {
141 inode = ERR_PTR(-EINVAL);
142 mlog_errno(PTR_ERR(inode));
143 goto bail;
144 }
145
146 args.fi_blkno = blkno;
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700147 args.fi_flags = flags;
Mark Fashehccd979b2005-12-15 14:31:24 -0800148 args.fi_ino = ino_from_blkno(sb, blkno);
Jan Kara5fa06132008-01-11 00:11:45 +0100149 args.fi_sysfile_type = sysfile_type;
Mark Fashehccd979b2005-12-15 14:31:24 -0800150
151 inode = iget5_locked(sb, args.fi_ino, ocfs2_find_actor,
152 ocfs2_init_locked_inode, &args);
153 /* inode was *not* in the inode cache. 2.6.x requires
154 * us to do our own read_inode call and unlock it
155 * afterwards. */
156 if (inode && inode->i_state & I_NEW) {
157 mlog(0, "Inode was not in inode cache, reading it.\n");
158 ocfs2_read_locked_inode(inode, &args);
159 unlock_new_inode(inode);
160 }
161 if (inode == NULL) {
162 inode = ERR_PTR(-ENOMEM);
163 mlog_errno(PTR_ERR(inode));
164 goto bail;
165 }
166 if (is_bad_inode(inode)) {
167 iput(inode);
168 inode = ERR_PTR(-ESTALE);
Mark Fashehccd979b2005-12-15 14:31:24 -0800169 goto bail;
170 }
171
172bail:
173 if (!IS_ERR(inode)) {
Mark Fashehb06970532006-03-03 10:24:33 -0800174 mlog(0, "returning inode with number %llu\n",
175 (unsigned long long)OCFS2_I(inode)->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -0800176 mlog_exit_ptr(inode);
Mark Fasheh6a1bd4a2007-01-03 17:06:59 -0800177 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800178
179 return inode;
180}
181
182
183/*
184 * here's how inodes get read from disk:
185 * iget5_locked -> find_actor -> OCFS2_FIND_ACTOR
186 * found? : return the in-memory inode
187 * not found? : get_new_inode -> OCFS2_INIT_LOCKED_INODE
188 */
189
190static int ocfs2_find_actor(struct inode *inode, void *opaque)
191{
192 struct ocfs2_find_inode_args *args = NULL;
193 struct ocfs2_inode_info *oi = OCFS2_I(inode);
194 int ret = 0;
195
196 mlog_entry("(0x%p, %lu, 0x%p)\n", inode, inode->i_ino, opaque);
197
198 args = opaque;
199
200 mlog_bug_on_msg(!inode, "No inode in find actor!\n");
201
202 if (oi->ip_blkno != args->fi_blkno)
203 goto bail;
204
Mark Fashehccd979b2005-12-15 14:31:24 -0800205 ret = 1;
206bail:
207 mlog_exit(ret);
208 return ret;
209}
210
211/*
212 * initialize the new inode, but don't do anything that would cause
213 * us to sleep.
214 * return 0 on success, 1 on failure
215 */
216static int ocfs2_init_locked_inode(struct inode *inode, void *opaque)
217{
218 struct ocfs2_find_inode_args *args = opaque;
Jan Karacb257972009-06-04 15:26:50 +0200219 static struct lock_class_key ocfs2_quota_ip_alloc_sem_key,
220 ocfs2_file_ip_alloc_sem_key;
Mark Fashehccd979b2005-12-15 14:31:24 -0800221
222 mlog_entry("inode = %p, opaque = %p\n", inode, opaque);
223
224 inode->i_ino = args->fi_ino;
225 OCFS2_I(inode)->ip_blkno = args->fi_blkno;
Jan Kara5fa06132008-01-11 00:11:45 +0100226 if (args->fi_sysfile_type != 0)
227 lockdep_set_class(&inode->i_mutex,
228 &ocfs2_sysfile_lock_key[args->fi_sysfile_type]);
Jan Karacb257972009-06-04 15:26:50 +0200229 if (args->fi_sysfile_type == USER_QUOTA_SYSTEM_INODE ||
230 args->fi_sysfile_type == GROUP_QUOTA_SYSTEM_INODE ||
231 args->fi_sysfile_type == LOCAL_USER_QUOTA_SYSTEM_INODE ||
232 args->fi_sysfile_type == LOCAL_GROUP_QUOTA_SYSTEM_INODE)
233 lockdep_set_class(&OCFS2_I(inode)->ip_alloc_sem,
234 &ocfs2_quota_ip_alloc_sem_key);
235 else
236 lockdep_set_class(&OCFS2_I(inode)->ip_alloc_sem,
237 &ocfs2_file_ip_alloc_sem_key);
Mark Fashehccd979b2005-12-15 14:31:24 -0800238
239 mlog_exit(0);
240 return 0;
241}
242
Joel Beckerb657c952008-11-13 14:49:11 -0800243void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
244 int create_ino)
Mark Fashehccd979b2005-12-15 14:31:24 -0800245{
246 struct super_block *sb;
247 struct ocfs2_super *osb;
Mark Fasheh53da4932008-07-21 14:29:16 -0700248 int use_plocks = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -0800249
Mark Fashehb06970532006-03-03 10:24:33 -0800250 mlog_entry("(0x%p, size:%llu)\n", inode,
Mark Fasheh1ca1a112007-04-27 16:01:25 -0700251 (unsigned long long)le64_to_cpu(fe->i_size));
Mark Fashehccd979b2005-12-15 14:31:24 -0800252
253 sb = inode->i_sb;
254 osb = OCFS2_SB(sb);
255
Mark Fasheh53da4932008-07-21 14:29:16 -0700256 if ((osb->s_mount_opt & OCFS2_MOUNT_LOCALFLOCKS) ||
257 ocfs2_mount_local(osb) || !ocfs2_stack_supports_plocks())
258 use_plocks = 0;
259
Joel Beckerb657c952008-11-13 14:49:11 -0800260 /*
261 * These have all been checked by ocfs2_read_inode_block() or set
262 * by ocfs2_mknod_locked(), so a failure is a code bug.
263 */
264 BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); /* This means that read_inode
265 cannot create a superblock
266 inode today. change if
267 that is needed. */
268 BUG_ON(!(fe->i_flags & cpu_to_le32(OCFS2_VALID_FL)));
269 BUG_ON(le32_to_cpu(fe->i_fs_generation) != osb->fs_generation);
Mark Fashehccd979b2005-12-15 14:31:24 -0800270
Mark Fashehccd979b2005-12-15 14:31:24 -0800271
Mark Fasheh8110b072007-03-22 16:53:23 -0700272 OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
273 OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr);
Mark Fasheh15b1e362007-09-07 13:58:15 -0700274 OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features);
Mark Fasheh8110b072007-03-22 16:53:23 -0700275
Mark Fashehccd979b2005-12-15 14:31:24 -0800276 inode->i_version = 1;
277 inode->i_generation = le32_to_cpu(fe->i_generation);
278 inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev));
279 inode->i_mode = le16_to_cpu(fe->i_mode);
280 inode->i_uid = le32_to_cpu(fe->i_uid);
281 inode->i_gid = le32_to_cpu(fe->i_gid);
Mark Fashehccd979b2005-12-15 14:31:24 -0800282
283 /* Fast symlinks will have i_size but no allocated clusters. */
284 if (S_ISLNK(inode->i_mode) && !fe->i_clusters)
285 inode->i_blocks = 0;
286 else
Mark Fasheh8110b072007-03-22 16:53:23 -0700287 inode->i_blocks = ocfs2_inode_sector_count(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800288 inode->i_mapping->a_ops = &ocfs2_aops;
Mark Fashehccd979b2005-12-15 14:31:24 -0800289 inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime);
290 inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec);
291 inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime);
292 inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec);
293 inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime);
294 inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec);
295
296 if (OCFS2_I(inode)->ip_blkno != le64_to_cpu(fe->i_blkno))
297 mlog(ML_ERROR,
Mark Fashehb06970532006-03-03 10:24:33 -0800298 "ip_blkno %llu != i_blkno %llu!\n",
299 (unsigned long long)OCFS2_I(inode)->ip_blkno,
Mark Fasheh1ca1a112007-04-27 16:01:25 -0700300 (unsigned long long)le64_to_cpu(fe->i_blkno));
Mark Fashehccd979b2005-12-15 14:31:24 -0800301
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800302 inode->i_nlink = ocfs2_read_links_count(fe);
Mark Fashehccd979b2005-12-15 14:31:24 -0800303
Jan Karabbbd0eb2008-08-21 18:22:30 +0200304 if (fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) {
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700305 OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SYSTEM_FILE;
Jan Karabbbd0eb2008-08-21 18:22:30 +0200306 inode->i_flags |= S_NOQUOTA;
307 }
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700308
Mark Fashehccd979b2005-12-15 14:31:24 -0800309 if (fe->i_flags & cpu_to_le32(OCFS2_LOCAL_ALLOC_FL)) {
310 OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP;
311 mlog(0, "local alloc inode: i_ino=%lu\n", inode->i_ino);
312 } else if (fe->i_flags & cpu_to_le32(OCFS2_BITMAP_FL)) {
313 OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP;
Jan Kara1a224ad2008-08-20 15:43:36 +0200314 } else if (fe->i_flags & cpu_to_le32(OCFS2_QUOTA_FL)) {
315 inode->i_flags |= S_NOQUOTA;
Mark Fashehccd979b2005-12-15 14:31:24 -0800316 } else if (fe->i_flags & cpu_to_le32(OCFS2_SUPER_BLOCK_FL)) {
317 mlog(0, "superblock inode: i_ino=%lu\n", inode->i_ino);
318 /* we can't actually hit this as read_inode can't
319 * handle superblocks today ;-) */
320 BUG();
321 }
322
323 switch (inode->i_mode & S_IFMT) {
324 case S_IFREG:
Mark Fasheh53da4932008-07-21 14:29:16 -0700325 if (use_plocks)
326 inode->i_fop = &ocfs2_fops;
327 else
328 inode->i_fop = &ocfs2_fops_no_plocks;
Mark Fashehccd979b2005-12-15 14:31:24 -0800329 inode->i_op = &ocfs2_file_iops;
330 i_size_write(inode, le64_to_cpu(fe->i_size));
331 break;
332 case S_IFDIR:
333 inode->i_op = &ocfs2_dir_iops;
Mark Fasheh53da4932008-07-21 14:29:16 -0700334 if (use_plocks)
335 inode->i_fop = &ocfs2_dops;
336 else
337 inode->i_fop = &ocfs2_dops_no_plocks;
Mark Fashehccd979b2005-12-15 14:31:24 -0800338 i_size_write(inode, le64_to_cpu(fe->i_size));
339 break;
340 case S_IFLNK:
341 if (ocfs2_inode_is_fast_symlink(inode))
342 inode->i_op = &ocfs2_fast_symlink_inode_operations;
343 else
344 inode->i_op = &ocfs2_symlink_inode_operations;
345 i_size_write(inode, le64_to_cpu(fe->i_size));
346 break;
347 default:
348 inode->i_op = &ocfs2_special_file_iops;
349 init_special_inode(inode, inode->i_mode,
350 inode->i_rdev);
351 break;
352 }
353
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700354 if (create_ino) {
355 inode->i_ino = ino_from_blkno(inode->i_sb,
356 le64_to_cpu(fe->i_blkno));
357
358 /*
359 * If we ever want to create system files from kernel,
360 * the generation argument to
361 * ocfs2_inode_lock_res_init() will have to change.
362 */
Mark Fasheh1ca1a112007-04-27 16:01:25 -0700363 BUG_ON(le32_to_cpu(fe->i_flags) & OCFS2_SYSTEM_FL);
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700364
Mark Fashehe63aecb62007-10-18 15:30:42 -0700365 ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_inode_lockres,
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700366 OCFS2_LOCK_TYPE_META, 0, inode);
Tiger Yang50008632007-03-20 16:01:38 -0700367
368 ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres,
369 OCFS2_LOCK_TYPE_OPEN, 0, inode);
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700370 }
371
Mark Fashehccd979b2005-12-15 14:31:24 -0800372 ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_rw_lockres,
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700373 OCFS2_LOCK_TYPE_RW, inode->i_generation,
374 inode);
375
Herbert Poetzlca4d1472006-07-03 17:27:12 -0700376 ocfs2_set_inode_flags(inode);
Herbert Poetzlca4d1472006-07-03 17:27:12 -0700377
Tao Ma13821152009-02-25 00:53:23 +0800378 OCFS2_I(inode)->ip_last_used_slot = 0;
379 OCFS2_I(inode)->ip_last_used_group = 0;
Joel Beckerb657c952008-11-13 14:49:11 -0800380 mlog_exit_void();
Mark Fashehccd979b2005-12-15 14:31:24 -0800381}
382
383static int ocfs2_read_locked_inode(struct inode *inode,
384 struct ocfs2_find_inode_args *args)
385{
386 struct super_block *sb;
387 struct ocfs2_super *osb;
388 struct ocfs2_dinode *fe;
389 struct buffer_head *bh = NULL;
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700390 int status, can_lock;
391 u32 generation = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -0800392
393 mlog_entry("(0x%p, 0x%p)\n", inode, args);
394
395 status = -EINVAL;
396 if (inode == NULL || inode->i_sb == NULL) {
397 mlog(ML_ERROR, "bad inode\n");
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700398 return status;
Mark Fashehccd979b2005-12-15 14:31:24 -0800399 }
400 sb = inode->i_sb;
401 osb = OCFS2_SB(sb);
402
403 if (!args) {
404 mlog(ML_ERROR, "bad inode args\n");
405 make_bad_inode(inode);
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700406 return status;
Mark Fashehccd979b2005-12-15 14:31:24 -0800407 }
408
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700409 /*
410 * To improve performance of cold-cache inode stats, we take
411 * the cluster lock here if possible.
412 *
413 * Generally, OCFS2 never trusts the contents of an inode
414 * unless it's holding a cluster lock, so taking it here isn't
415 * a correctness issue as much as it is a performance
416 * improvement.
417 *
418 * There are three times when taking the lock is not a good idea:
419 *
420 * 1) During startup, before we have initialized the DLM.
421 *
422 * 2) If we are reading certain system files which never get
423 * cluster locks (local alloc, truncate log).
424 *
425 * 3) If the process doing the iget() is responsible for
426 * orphan dir recovery. We're holding the orphan dir lock and
427 * can get into a deadlock with another process on another
428 * node in ->delete_inode().
429 *
430 * #1 and #2 can be simply solved by never taking the lock
431 * here for system files (which are the only type we read
432 * during mount). It's a heavier approach, but our main
433 * concern is user-accesible files anyway.
434 *
435 * #3 works itself out because we'll eventually take the
436 * cluster lock before trusting anything anyway.
437 */
438 can_lock = !(args->fi_flags & OCFS2_FI_FLAG_SYSFILE)
Tiger Yang50008632007-03-20 16:01:38 -0700439 && !(args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY)
Sunil Mushranc271c5c2006-12-05 17:56:35 -0800440 && !ocfs2_mount_local(osb);
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700441
442 /*
443 * To maintain backwards compatibility with older versions of
444 * ocfs2-tools, we still store the generation value for system
445 * files. The only ones that actually matter to userspace are
446 * the journals, but it's easier and inexpensive to just flag
447 * all system files similarly.
448 */
449 if (args->fi_flags & OCFS2_FI_FLAG_SYSFILE)
450 generation = osb->fs_generation;
451
Mark Fashehe63aecb62007-10-18 15:30:42 -0700452 ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_inode_lockres,
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700453 OCFS2_LOCK_TYPE_META,
454 generation, inode);
455
Tiger Yang50008632007-03-20 16:01:38 -0700456 ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres,
457 OCFS2_LOCK_TYPE_OPEN,
458 0, inode);
459
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700460 if (can_lock) {
Tiger Yang50008632007-03-20 16:01:38 -0700461 status = ocfs2_open_lock(inode);
462 if (status) {
463 make_bad_inode(inode);
464 mlog_errno(status);
465 return status;
466 }
Mark Fashehe63aecb62007-10-18 15:30:42 -0700467 status = ocfs2_inode_lock(inode, NULL, 0);
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700468 if (status) {
469 make_bad_inode(inode);
470 mlog_errno(status);
471 return status;
472 }
473 }
474
Tiger Yang50008632007-03-20 16:01:38 -0700475 if (args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY) {
476 status = ocfs2_try_open_lock(inode, 0);
477 if (status) {
478 make_bad_inode(inode);
479 return status;
480 }
481 }
482
Joel Beckerb657c952008-11-13 14:49:11 -0800483 if (can_lock) {
484 status = ocfs2_read_inode_block_full(inode, &bh,
485 OCFS2_BH_IGNORE_CACHE);
486 } else {
Joel Beckerda1e9092008-10-09 17:20:29 -0700487 status = ocfs2_read_blocks_sync(osb, args->fi_blkno, 1, &bh);
Joel Beckerb657c952008-11-13 14:49:11 -0800488 if (!status)
489 status = ocfs2_validate_inode_block(osb->sb, bh);
490 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800491 if (status < 0) {
492 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -0800493 goto bail;
494 }
495
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700496 status = -EINVAL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800497 fe = (struct ocfs2_dinode *) bh->b_data;
Mark Fashehccd979b2005-12-15 14:31:24 -0800498
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700499 /*
500 * This is a code bug. Right now the caller needs to
501 * understand whether it is asking for a system file inode or
502 * not so the proper lock names can be built.
503 */
504 mlog_bug_on_msg(!!(fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) !=
505 !!(args->fi_flags & OCFS2_FI_FLAG_SYSFILE),
506 "Inode %llu: system file state is ambigous\n",
507 (unsigned long long)args->fi_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -0800508
509 if (S_ISCHR(le16_to_cpu(fe->i_mode)) ||
510 S_ISBLK(le16_to_cpu(fe->i_mode)))
Joel Beckerb657c952008-11-13 14:49:11 -0800511 inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev));
Mark Fashehccd979b2005-12-15 14:31:24 -0800512
Joel Beckerb657c952008-11-13 14:49:11 -0800513 ocfs2_populate_inode(inode, fe, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -0800514
515 BUG_ON(args->fi_blkno != le64_to_cpu(fe->i_blkno));
516
Mark Fashehccd979b2005-12-15 14:31:24 -0800517 status = 0;
518
519bail:
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700520 if (can_lock)
Mark Fashehe63aecb62007-10-18 15:30:42 -0700521 ocfs2_inode_unlock(inode, 0);
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700522
523 if (status < 0)
524 make_bad_inode(inode);
525
Mark Fashehccd979b2005-12-15 14:31:24 -0800526 if (args && bh)
527 brelse(bh);
528
529 mlog_exit(status);
530 return status;
531}
532
533void ocfs2_sync_blockdev(struct super_block *sb)
534{
535 sync_blockdev(sb->s_bdev);
536}
537
538static int ocfs2_truncate_for_delete(struct ocfs2_super *osb,
539 struct inode *inode,
540 struct buffer_head *fe_bh)
541{
542 int status = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -0800543 struct ocfs2_truncate_context *tc = NULL;
544 struct ocfs2_dinode *fe;
Mark Fasheh60b11392007-02-16 11:46:50 -0800545 handle_t *handle = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800546
547 mlog_entry_void();
548
549 fe = (struct ocfs2_dinode *) fe_bh->b_data;
550
Mark Fasheh1afc32b2007-09-07 14:46:51 -0700551 /*
552 * This check will also skip truncate of inodes with inline
553 * data and fast symlinks.
554 */
Mark Fasheh3a0782d2007-01-17 12:53:31 -0800555 if (fe->i_clusters) {
Joel Becker2b4e30f2008-09-03 20:03:41 -0700556 if (ocfs2_should_order_data(inode))
557 ocfs2_begin_ordered_truncate(inode, 0);
558
Mark Fasheh60b11392007-02-16 11:46:50 -0800559 handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
560 if (IS_ERR(handle)) {
561 status = PTR_ERR(handle);
562 mlog_errno(status);
563 goto out;
564 }
565
Joel Becker0cf2f762009-02-12 16:41:25 -0800566 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode),
567 fe_bh,
Joel Becker13723d02008-10-17 19:25:01 -0700568 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fasheh60b11392007-02-16 11:46:50 -0800569 if (status < 0) {
570 mlog_errno(status);
571 goto out;
572 }
573
574 i_size_write(inode, 0);
575
576 status = ocfs2_mark_inode_dirty(handle, inode, fe_bh);
577 if (status < 0) {
578 mlog_errno(status);
579 goto out;
580 }
581
582 ocfs2_commit_trans(osb, handle);
583 handle = NULL;
584
Mark Fasheh3a0782d2007-01-17 12:53:31 -0800585 status = ocfs2_prepare_truncate(osb, inode, fe_bh, &tc);
586 if (status < 0) {
587 mlog_errno(status);
588 goto out;
589 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800590
Mark Fasheh3a0782d2007-01-17 12:53:31 -0800591 status = ocfs2_commit_truncate(osb, inode, fe_bh, tc);
592 if (status < 0) {
593 mlog_errno(status);
594 goto out;
595 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800596 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800597
Mark Fasheh60b11392007-02-16 11:46:50 -0800598out:
599 if (handle)
600 ocfs2_commit_trans(osb, handle);
Mark Fashehccd979b2005-12-15 14:31:24 -0800601 mlog_exit(status);
602 return status;
603}
604
605static int ocfs2_remove_inode(struct inode *inode,
606 struct buffer_head *di_bh,
607 struct inode *orphan_dir_inode,
608 struct buffer_head *orphan_dir_bh)
609{
610 int status;
611 struct inode *inode_alloc_inode = NULL;
612 struct buffer_head *inode_alloc_bh = NULL;
Mark Fasheh1fabe142006-10-09 18:11:45 -0700613 handle_t *handle;
Mark Fashehccd979b2005-12-15 14:31:24 -0800614 struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
615 struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data;
616
617 inode_alloc_inode =
618 ocfs2_get_system_file_inode(osb, INODE_ALLOC_SYSTEM_INODE,
619 le16_to_cpu(di->i_suballoc_slot));
620 if (!inode_alloc_inode) {
621 status = -EEXIST;
622 mlog_errno(status);
623 goto bail;
624 }
625
Jes Sorensen1b1dcc12006-01-09 15:59:24 -0800626 mutex_lock(&inode_alloc_inode->i_mutex);
Mark Fashehe63aecb62007-10-18 15:30:42 -0700627 status = ocfs2_inode_lock(inode_alloc_inode, &inode_alloc_bh, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -0800628 if (status < 0) {
Jes Sorensen1b1dcc12006-01-09 15:59:24 -0800629 mutex_unlock(&inode_alloc_inode->i_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -0800630
631 mlog_errno(status);
632 goto bail;
633 }
634
Jan Karaa90714c2008-10-09 19:38:40 +0200635 handle = ocfs2_start_trans(osb, OCFS2_DELETE_INODE_CREDITS +
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800636 ocfs2_quota_trans_credits(inode->i_sb));
Mark Fashehccd979b2005-12-15 14:31:24 -0800637 if (IS_ERR(handle)) {
638 status = PTR_ERR(handle);
639 mlog_errno(status);
640 goto bail_unlock;
641 }
642
643 status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode,
644 orphan_dir_bh);
645 if (status < 0) {
646 mlog_errno(status);
647 goto bail_commit;
648 }
649
650 /* set the inodes dtime */
Joel Becker0cf2f762009-02-12 16:41:25 -0800651 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), di_bh,
Joel Becker13723d02008-10-17 19:25:01 -0700652 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -0800653 if (status < 0) {
654 mlog_errno(status);
655 goto bail_commit;
656 }
657
658 di->i_dtime = cpu_to_le64(CURRENT_TIME.tv_sec);
Marcin Slusarz4092d492007-12-25 15:52:59 +0100659 di->i_flags &= cpu_to_le32(~(OCFS2_VALID_FL | OCFS2_ORPHANED_FL));
Mark Fashehccd979b2005-12-15 14:31:24 -0800660
661 status = ocfs2_journal_dirty(handle, di_bh);
662 if (status < 0) {
663 mlog_errno(status);
664 goto bail_commit;
665 }
666
Joel Becker8cb471e2009-02-10 20:00:41 -0800667 ocfs2_remove_from_cache(INODE_CACHE(inode), di_bh);
Jan Karaa90714c2008-10-09 19:38:40 +0200668 vfs_dq_free_inode(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800669
670 status = ocfs2_free_dinode(handle, inode_alloc_inode,
671 inode_alloc_bh, di);
672 if (status < 0)
673 mlog_errno(status);
674
675bail_commit:
Mark Fasheh02dc1af2006-10-09 16:48:10 -0700676 ocfs2_commit_trans(osb, handle);
Mark Fashehccd979b2005-12-15 14:31:24 -0800677bail_unlock:
Mark Fashehe63aecb62007-10-18 15:30:42 -0700678 ocfs2_inode_unlock(inode_alloc_inode, 1);
Jes Sorensen1b1dcc12006-01-09 15:59:24 -0800679 mutex_unlock(&inode_alloc_inode->i_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -0800680 brelse(inode_alloc_bh);
681bail:
682 iput(inode_alloc_inode);
683
684 return status;
685}
686
Mark Fashehb4df6ed2006-02-22 17:35:08 -0800687/*
688 * Serialize with orphan dir recovery. If the process doing
689 * recovery on this orphan dir does an iget() with the dir
690 * i_mutex held, we'll deadlock here. Instead we detect this
691 * and exit early - recovery will wipe this inode for us.
692 */
693static int ocfs2_check_orphan_recovery_state(struct ocfs2_super *osb,
694 int slot)
695{
696 int ret = 0;
697
698 spin_lock(&osb->osb_lock);
699 if (ocfs2_node_map_test_bit(osb, &osb->osb_recovering_orphan_dirs, slot)) {
700 mlog(0, "Recovery is happening on orphan dir %d, will skip "
701 "this inode\n", slot);
702 ret = -EDEADLK;
703 goto out;
704 }
705 /* This signals to the orphan recovery process that it should
706 * wait for us to handle the wipe. */
707 osb->osb_orphan_wipes[slot]++;
708out:
709 spin_unlock(&osb->osb_lock);
710 return ret;
711}
712
713static void ocfs2_signal_wipe_completion(struct ocfs2_super *osb,
714 int slot)
715{
716 spin_lock(&osb->osb_lock);
717 osb->osb_orphan_wipes[slot]--;
718 spin_unlock(&osb->osb_lock);
719
720 wake_up(&osb->osb_wipe_event);
721}
722
Mark Fashehccd979b2005-12-15 14:31:24 -0800723static int ocfs2_wipe_inode(struct inode *inode,
724 struct buffer_head *di_bh)
725{
726 int status, orphaned_slot;
727 struct inode *orphan_dir_inode = NULL;
728 struct buffer_head *orphan_dir_bh = NULL;
729 struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
Tiger Yang50008632007-03-20 16:01:38 -0700730 struct ocfs2_dinode *di;
Mark Fashehccd979b2005-12-15 14:31:24 -0800731
Tiger Yang50008632007-03-20 16:01:38 -0700732 di = (struct ocfs2_dinode *) di_bh->b_data;
733 orphaned_slot = le16_to_cpu(di->i_orphaned_slot);
Mark Fashehb4df6ed2006-02-22 17:35:08 -0800734
735 status = ocfs2_check_orphan_recovery_state(osb, orphaned_slot);
736 if (status)
737 return status;
738
Mark Fashehccd979b2005-12-15 14:31:24 -0800739 orphan_dir_inode = ocfs2_get_system_file_inode(osb,
740 ORPHAN_DIR_SYSTEM_INODE,
741 orphaned_slot);
742 if (!orphan_dir_inode) {
743 status = -EEXIST;
744 mlog_errno(status);
745 goto bail;
746 }
747
748 /* Lock the orphan dir. The lock will be held for the entire
749 * delete_inode operation. We do this now to avoid races with
750 * recovery completion on other nodes. */
Jes Sorensen1b1dcc12006-01-09 15:59:24 -0800751 mutex_lock(&orphan_dir_inode->i_mutex);
Mark Fashehe63aecb62007-10-18 15:30:42 -0700752 status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -0800753 if (status < 0) {
Jes Sorensen1b1dcc12006-01-09 15:59:24 -0800754 mutex_unlock(&orphan_dir_inode->i_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -0800755
756 mlog_errno(status);
757 goto bail;
758 }
759
760 /* we do this while holding the orphan dir lock because we
Mark Fasheh34d024f2007-09-24 15:56:19 -0700761 * don't want recovery being run from another node to try an
762 * inode delete underneath us -- this will result in two nodes
Mark Fashehccd979b2005-12-15 14:31:24 -0800763 * truncating the same file! */
764 status = ocfs2_truncate_for_delete(osb, inode, di_bh);
765 if (status < 0) {
766 mlog_errno(status);
767 goto bail_unlock_dir;
768 }
769
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800770 /* Remove any dir index tree */
771 if (S_ISDIR(inode->i_mode)) {
772 status = ocfs2_dx_dir_truncate(inode, di_bh);
773 if (status) {
774 mlog_errno(status);
775 goto bail_unlock_dir;
776 }
777 }
778
Tiger Yangcf1d6c72008-08-18 17:11:00 +0800779 /*Free extended attribute resources associated with this inode.*/
780 status = ocfs2_xattr_remove(inode, di_bh);
781 if (status < 0) {
782 mlog_errno(status);
783 goto bail_unlock_dir;
784 }
785
Tao Ma8b2c0db2009-08-18 11:43:49 +0800786 status = ocfs2_remove_refcount_tree(inode, di_bh);
787 if (status < 0) {
788 mlog_errno(status);
789 goto bail_unlock_dir;
790 }
791
Mark Fashehccd979b2005-12-15 14:31:24 -0800792 status = ocfs2_remove_inode(inode, di_bh, orphan_dir_inode,
793 orphan_dir_bh);
794 if (status < 0)
795 mlog_errno(status);
796
797bail_unlock_dir:
Mark Fashehe63aecb62007-10-18 15:30:42 -0700798 ocfs2_inode_unlock(orphan_dir_inode, 1);
Jes Sorensen1b1dcc12006-01-09 15:59:24 -0800799 mutex_unlock(&orphan_dir_inode->i_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -0800800 brelse(orphan_dir_bh);
801bail:
802 iput(orphan_dir_inode);
Mark Fashehb4df6ed2006-02-22 17:35:08 -0800803 ocfs2_signal_wipe_completion(osb, orphaned_slot);
Mark Fashehccd979b2005-12-15 14:31:24 -0800804
805 return status;
806}
807
808/* There is a series of simple checks that should be done before a
Mark Fasheh34d024f2007-09-24 15:56:19 -0700809 * trylock is even considered. Encapsulate those in this function. */
Mark Fashehccd979b2005-12-15 14:31:24 -0800810static int ocfs2_inode_is_valid_to_delete(struct inode *inode)
811{
812 int ret = 0;
813 struct ocfs2_inode_info *oi = OCFS2_I(inode);
814 struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
815
816 /* We shouldn't be getting here for the root directory
817 * inode.. */
818 if (inode == osb->root_inode) {
819 mlog(ML_ERROR, "Skipping delete of root inode.\n");
820 goto bail;
821 }
822
Mark Fasheh34d024f2007-09-24 15:56:19 -0700823 /* If we're coming from downconvert_thread we can't go into our own
Mark Fashehccd979b2005-12-15 14:31:24 -0800824 * voting [hello, deadlock city!], so unforuntately we just
825 * have to skip deleting this guy. That's OK though because
826 * the node who's doing the actual deleting should handle it
827 * anyway. */
Mark Fasheh34d024f2007-09-24 15:56:19 -0700828 if (current == osb->dc_task) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800829 mlog(0, "Skipping delete of %lu because we're currently "
Mark Fasheh34d024f2007-09-24 15:56:19 -0700830 "in downconvert\n", inode->i_ino);
Mark Fashehccd979b2005-12-15 14:31:24 -0800831 goto bail;
832 }
833
834 spin_lock(&oi->ip_lock);
835 /* OCFS2 *never* deletes system files. This should technically
836 * never get here as system file inodes should always have a
837 * positive link count. */
838 if (oi->ip_flags & OCFS2_INODE_SYSTEM_FILE) {
Mark Fashehb06970532006-03-03 10:24:33 -0800839 mlog(ML_ERROR, "Skipping delete of system file %llu\n",
840 (unsigned long long)oi->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -0800841 goto bail_unlock;
842 }
843
Mark Fasheh34d024f2007-09-24 15:56:19 -0700844 /* If we have allowd wipe of this inode for another node, it
845 * will be marked here so we can safely skip it. Recovery will
846 * cleanup any inodes we might inadvertantly skip here. */
Mark Fashehccd979b2005-12-15 14:31:24 -0800847 if (oi->ip_flags & OCFS2_INODE_SKIP_DELETE) {
848 mlog(0, "Skipping delete of %lu because another node "
849 "has done this for us.\n", inode->i_ino);
850 goto bail_unlock;
851 }
852
853 ret = 1;
854bail_unlock:
855 spin_unlock(&oi->ip_lock);
856bail:
857 return ret;
858}
859
860/* Query the cluster to determine whether we should wipe an inode from
861 * disk or not.
862 *
863 * Requires the inode to have the cluster lock. */
864static int ocfs2_query_inode_wipe(struct inode *inode,
865 struct buffer_head *di_bh,
866 int *wipe)
867{
868 int status = 0;
869 struct ocfs2_inode_info *oi = OCFS2_I(inode);
870 struct ocfs2_dinode *di;
871
872 *wipe = 0;
873
874 /* While we were waiting for the cluster lock in
875 * ocfs2_delete_inode, another node might have asked to delete
876 * the inode. Recheck our flags to catch this. */
877 if (!ocfs2_inode_is_valid_to_delete(inode)) {
Mark Fashehb06970532006-03-03 10:24:33 -0800878 mlog(0, "Skipping delete of %llu because flags changed\n",
879 (unsigned long long)oi->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -0800880 goto bail;
881 }
882
883 /* Now that we have an up to date inode, we can double check
884 * the link count. */
885 if (inode->i_nlink) {
Mark Fashehb06970532006-03-03 10:24:33 -0800886 mlog(0, "Skipping delete of %llu because nlink = %u\n",
887 (unsigned long long)oi->ip_blkno, inode->i_nlink);
Mark Fashehccd979b2005-12-15 14:31:24 -0800888 goto bail;
889 }
890
891 /* Do some basic inode verification... */
892 di = (struct ocfs2_dinode *) di_bh->b_data;
893 if (!(di->i_flags & cpu_to_le32(OCFS2_ORPHANED_FL))) {
894 /* for lack of a better error? */
895 status = -EEXIST;
896 mlog(ML_ERROR,
Mark Fashehb06970532006-03-03 10:24:33 -0800897 "Inode %llu (on-disk %llu) not orphaned! "
Mark Fashehccd979b2005-12-15 14:31:24 -0800898 "Disk flags 0x%x, inode flags 0x%x\n",
Mark Fashehb06970532006-03-03 10:24:33 -0800899 (unsigned long long)oi->ip_blkno,
Mark Fasheh1ca1a112007-04-27 16:01:25 -0700900 (unsigned long long)le64_to_cpu(di->i_blkno),
901 le32_to_cpu(di->i_flags), oi->ip_flags);
Mark Fashehccd979b2005-12-15 14:31:24 -0800902 goto bail;
903 }
904
905 /* has someone already deleted us?! baaad... */
906 if (di->i_dtime) {
907 status = -EEXIST;
908 mlog_errno(status);
909 goto bail;
910 }
911
Mark Fasheh6f16bf62007-03-20 17:17:54 -0700912 /*
913 * This is how ocfs2 determines whether an inode is still live
914 * within the cluster. Every node takes a shared read lock on
915 * the inode open lock in ocfs2_read_locked_inode(). When we
916 * get to ->delete_inode(), each node tries to convert it's
917 * lock to an exclusive. Trylocks are serialized by the inode
918 * meta data lock. If the upconvert suceeds, we know the inode
919 * is no longer live and can be deleted.
920 *
921 * Though we call this with the meta data lock held, the
922 * trylock keeps us from ABBA deadlock.
923 */
924 status = ocfs2_try_open_lock(inode, 1);
Tiger Yang50008632007-03-20 16:01:38 -0700925 if (status == -EAGAIN) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800926 status = 0;
Joe Perches27592362007-11-19 17:53:34 -0800927 mlog(0, "Skipping delete of %llu because it is in use on "
Mark Fashehb06970532006-03-03 10:24:33 -0800928 "other nodes\n", (unsigned long long)oi->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -0800929 goto bail;
930 }
931 if (status < 0) {
932 mlog_errno(status);
933 goto bail;
934 }
935
Tiger Yang50008632007-03-20 16:01:38 -0700936 *wipe = 1;
937 mlog(0, "Inode %llu is ok to wipe from orphan dir %u\n",
938 (unsigned long long)oi->ip_blkno,
939 le16_to_cpu(di->i_orphaned_slot));
Mark Fashehccd979b2005-12-15 14:31:24 -0800940
941bail:
942 return status;
943}
944
945/* Support function for ocfs2_delete_inode. Will help us keep the
946 * inode data in a consistent state for clear_inode. Always truncates
947 * pages, optionally sync's them first. */
948static void ocfs2_cleanup_delete_inode(struct inode *inode,
949 int sync_data)
950{
Mark Fashehb06970532006-03-03 10:24:33 -0800951 mlog(0, "Cleanup inode %llu, sync = %d\n",
952 (unsigned long long)OCFS2_I(inode)->ip_blkno, sync_data);
Mark Fashehccd979b2005-12-15 14:31:24 -0800953 if (sync_data)
954 write_inode_now(inode, 1);
955 truncate_inode_pages(&inode->i_data, 0);
956}
957
958void ocfs2_delete_inode(struct inode *inode)
959{
960 int wipe, status;
961 sigset_t blocked, oldset;
962 struct buffer_head *di_bh = NULL;
963
964 mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino);
965
Jan Karaa90714c2008-10-09 19:38:40 +0200966 /* When we fail in read_inode() we mark inode as bad. The second test
967 * catches the case when inode allocation fails before allocating
968 * a block for inode. */
969 if (is_bad_inode(inode) || !OCFS2_I(inode)->ip_blkno) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800970 mlog(0, "Skipping delete of bad inode\n");
971 goto bail;
972 }
973
974 if (!ocfs2_inode_is_valid_to_delete(inode)) {
975 /* It's probably not necessary to truncate_inode_pages
976 * here but we do it for safety anyway (it will most
977 * likely be a no-op anyway) */
978 ocfs2_cleanup_delete_inode(inode, 0);
979 goto bail;
980 }
981
982 /* We want to block signals in delete_inode as the lock and
983 * messaging paths may return us -ERESTARTSYS. Which would
984 * cause us to exit early, resulting in inodes being orphaned
985 * forever. */
986 sigfillset(&blocked);
987 status = sigprocmask(SIG_BLOCK, &blocked, &oldset);
988 if (status < 0) {
989 mlog_errno(status);
990 ocfs2_cleanup_delete_inode(inode, 1);
991 goto bail;
992 }
993
wengang wang6ca497a2009-03-06 21:29:10 +0800994 /*
995 * Synchronize us against ocfs2_get_dentry. We take this in
996 * shared mode so that all nodes can still concurrently
997 * process deletes.
998 */
999 status = ocfs2_nfs_sync_lock(OCFS2_SB(inode->i_sb), 0);
1000 if (status < 0) {
1001 mlog(ML_ERROR, "getting nfs sync lock(PR) failed %d\n", status);
1002 ocfs2_cleanup_delete_inode(inode, 0);
1003 goto bail_unblock;
1004 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001005 /* Lock down the inode. This gives us an up to date view of
1006 * it's metadata (for verification), and allows us to
Mark Fasheh34d024f2007-09-24 15:56:19 -07001007 * serialize delete_inode on multiple nodes.
Mark Fashehccd979b2005-12-15 14:31:24 -08001008 *
1009 * Even though we might be doing a truncate, we don't take the
1010 * allocation lock here as it won't be needed - nobody will
1011 * have the file open.
1012 */
Mark Fashehe63aecb62007-10-18 15:30:42 -07001013 status = ocfs2_inode_lock(inode, &di_bh, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001014 if (status < 0) {
1015 if (status != -ENOENT)
1016 mlog_errno(status);
1017 ocfs2_cleanup_delete_inode(inode, 0);
wengang wang6ca497a2009-03-06 21:29:10 +08001018 goto bail_unlock_nfs_sync;
Mark Fashehccd979b2005-12-15 14:31:24 -08001019 }
1020
1021 /* Query the cluster. This will be the final decision made
1022 * before we go ahead and wipe the inode. */
1023 status = ocfs2_query_inode_wipe(inode, di_bh, &wipe);
1024 if (!wipe || status < 0) {
Mark Fasheh34d024f2007-09-24 15:56:19 -07001025 /* Error and remote inode busy both mean we won't be
Mark Fashehccd979b2005-12-15 14:31:24 -08001026 * removing the inode, so they take almost the same
1027 * path. */
1028 if (status < 0)
1029 mlog_errno(status);
1030
Mark Fasheh34d024f2007-09-24 15:56:19 -07001031 /* Someone in the cluster has disallowed a wipe of
1032 * this inode, or it was never completely
1033 * orphaned. Write out the pages and exit now. */
Mark Fashehccd979b2005-12-15 14:31:24 -08001034 ocfs2_cleanup_delete_inode(inode, 1);
1035 goto bail_unlock_inode;
1036 }
1037
1038 ocfs2_cleanup_delete_inode(inode, 0);
1039
1040 status = ocfs2_wipe_inode(inode, di_bh);
1041 if (status < 0) {
Mark Fashehb4df6ed2006-02-22 17:35:08 -08001042 if (status != -EDEADLK)
1043 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001044 goto bail_unlock_inode;
1045 }
1046
Mark Fasheh24c19ef2006-09-22 17:28:19 -07001047 /*
1048 * Mark the inode as successfully deleted.
1049 *
1050 * This is important for ocfs2_clear_inode() as it will check
1051 * this flag and skip any checkpointing work
1052 *
1053 * ocfs2_stuff_meta_lvb() also uses this flag to invalidate
1054 * the LVB for other nodes.
1055 */
Mark Fashehccd979b2005-12-15 14:31:24 -08001056 OCFS2_I(inode)->ip_flags |= OCFS2_INODE_DELETED;
1057
1058bail_unlock_inode:
Mark Fashehe63aecb62007-10-18 15:30:42 -07001059 ocfs2_inode_unlock(inode, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001060 brelse(di_bh);
wengang wang6ca497a2009-03-06 21:29:10 +08001061
1062bail_unlock_nfs_sync:
1063 ocfs2_nfs_sync_unlock(OCFS2_SB(inode->i_sb), 0);
1064
Mark Fashehccd979b2005-12-15 14:31:24 -08001065bail_unblock:
1066 status = sigprocmask(SIG_SETMASK, &oldset, NULL);
1067 if (status < 0)
1068 mlog_errno(status);
1069bail:
1070 clear_inode(inode);
1071 mlog_exit_void();
1072}
1073
1074void ocfs2_clear_inode(struct inode *inode)
1075{
1076 int status;
1077 struct ocfs2_inode_info *oi = OCFS2_I(inode);
1078
1079 mlog_entry_void();
1080
1081 if (!inode)
1082 goto bail;
1083
Mark Fashehb06970532006-03-03 10:24:33 -08001084 mlog(0, "Clearing inode: %llu, nlink = %u\n",
1085 (unsigned long long)OCFS2_I(inode)->ip_blkno, inode->i_nlink);
Mark Fashehccd979b2005-12-15 14:31:24 -08001086
1087 mlog_bug_on_msg(OCFS2_SB(inode->i_sb) == NULL,
1088 "Inode=%lu\n", inode->i_ino);
1089
Mark Fasheh34d024f2007-09-24 15:56:19 -07001090 /* To preven remote deletes we hold open lock before, now it
1091 * is time to unlock PR and EX open locks. */
Tiger Yang50008632007-03-20 16:01:38 -07001092 ocfs2_open_unlock(inode);
1093
Mark Fashehccd979b2005-12-15 14:31:24 -08001094 /* Do these before all the other work so that we don't bounce
Mark Fasheh34d024f2007-09-24 15:56:19 -07001095 * the downconvert thread while waiting to destroy the locks. */
Mark Fashehccd979b2005-12-15 14:31:24 -08001096 ocfs2_mark_lockres_freeing(&oi->ip_rw_lockres);
Mark Fashehe63aecb62007-10-18 15:30:42 -07001097 ocfs2_mark_lockres_freeing(&oi->ip_inode_lockres);
Tiger Yang50008632007-03-20 16:01:38 -07001098 ocfs2_mark_lockres_freeing(&oi->ip_open_lockres);
Mark Fashehccd979b2005-12-15 14:31:24 -08001099
1100 /* We very well may get a clear_inode before all an inodes
1101 * metadata has hit disk. Of course, we can't drop any cluster
1102 * locks until the journal has finished with it. The only
1103 * exception here are successfully wiped inodes - their
1104 * metadata can now be considered to be part of the system
1105 * inodes from which it came. */
1106 if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED))
1107 ocfs2_checkpoint_inode(inode);
1108
1109 mlog_bug_on_msg(!list_empty(&oi->ip_io_markers),
Mark Fashehb06970532006-03-03 10:24:33 -08001110 "Clear inode of %llu, inode has io markers\n",
1111 (unsigned long long)oi->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08001112
Mark Fasheh83418972007-04-23 18:53:12 -07001113 ocfs2_extent_map_trunc(inode, 0);
1114
Mark Fashehccd979b2005-12-15 14:31:24 -08001115 status = ocfs2_drop_inode_locks(inode);
1116 if (status < 0)
1117 mlog_errno(status);
1118
1119 ocfs2_lock_res_free(&oi->ip_rw_lockres);
Mark Fashehe63aecb62007-10-18 15:30:42 -07001120 ocfs2_lock_res_free(&oi->ip_inode_lockres);
Tiger Yang50008632007-03-20 16:01:38 -07001121 ocfs2_lock_res_free(&oi->ip_open_lockres);
Mark Fashehccd979b2005-12-15 14:31:24 -08001122
Joel Becker66fb3452009-02-12 15:24:40 -08001123 ocfs2_metadata_cache_exit(INODE_CACHE(inode));
Mark Fashehccd979b2005-12-15 14:31:24 -08001124
Joel Becker8cb471e2009-02-10 20:00:41 -08001125 mlog_bug_on_msg(INODE_CACHE(inode)->ci_num_cached,
Mark Fashehb06970532006-03-03 10:24:33 -08001126 "Clear inode of %llu, inode has %u cache items\n",
Joel Becker8cb471e2009-02-10 20:00:41 -08001127 (unsigned long long)oi->ip_blkno,
1128 INODE_CACHE(inode)->ci_num_cached);
Mark Fashehccd979b2005-12-15 14:31:24 -08001129
Joel Becker8cb471e2009-02-10 20:00:41 -08001130 mlog_bug_on_msg(!(INODE_CACHE(inode)->ci_flags & OCFS2_CACHE_FL_INLINE),
Mark Fashehb06970532006-03-03 10:24:33 -08001131 "Clear inode of %llu, inode has a bad flag\n",
1132 (unsigned long long)oi->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08001133
1134 mlog_bug_on_msg(spin_is_locked(&oi->ip_lock),
Mark Fashehb06970532006-03-03 10:24:33 -08001135 "Clear inode of %llu, inode is locked\n",
1136 (unsigned long long)oi->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08001137
Mark Fasheh251b6ec2006-01-10 15:41:43 -08001138 mlog_bug_on_msg(!mutex_trylock(&oi->ip_io_mutex),
Mark Fashehb06970532006-03-03 10:24:33 -08001139 "Clear inode of %llu, io_mutex is locked\n",
1140 (unsigned long long)oi->ip_blkno);
Mark Fasheh251b6ec2006-01-10 15:41:43 -08001141 mutex_unlock(&oi->ip_io_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -08001142
1143 /*
1144 * down_trylock() returns 0, down_write_trylock() returns 1
1145 * kernel 1, world 0
1146 */
1147 mlog_bug_on_msg(!down_write_trylock(&oi->ip_alloc_sem),
Mark Fashehb06970532006-03-03 10:24:33 -08001148 "Clear inode of %llu, alloc_sem is locked\n",
1149 (unsigned long long)oi->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08001150 up_write(&oi->ip_alloc_sem);
1151
1152 mlog_bug_on_msg(oi->ip_open_count,
Mark Fashehb06970532006-03-03 10:24:33 -08001153 "Clear inode of %llu has open count %d\n",
1154 (unsigned long long)oi->ip_blkno, oi->ip_open_count);
Mark Fashehccd979b2005-12-15 14:31:24 -08001155
1156 /* Clear all other flags. */
Joel Becker47460d62009-02-10 16:05:07 -08001157 oi->ip_flags = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08001158 oi->ip_dir_start_lookup = 0;
1159 oi->ip_blkno = 0ULL;
Sunil Mushranae0dff62008-10-22 13:24:29 -07001160
1161 /*
1162 * ip_jinode is used to track txns against this inode. We ensure that
1163 * the journal is flushed before journal shutdown. Thus it is safe to
1164 * have inodes get cleaned up after journal shutdown.
1165 */
Joel Becker2b4e30f2008-09-03 20:03:41 -07001166 jbd2_journal_release_jbd_inode(OCFS2_SB(inode->i_sb)->journal->j_journal,
1167 &oi->ip_jinode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001168
1169bail:
1170 mlog_exit_void();
1171}
1172
1173/* Called under inode_lock, with no more references on the
1174 * struct inode, so it's safe here to check the flags field
1175 * and to manipulate i_nlink without any other locks. */
1176void ocfs2_drop_inode(struct inode *inode)
1177{
1178 struct ocfs2_inode_info *oi = OCFS2_I(inode);
1179
1180 mlog_entry_void();
1181
Mark Fashehb06970532006-03-03 10:24:33 -08001182 mlog(0, "Drop inode %llu, nlink = %u, ip_flags = 0x%x\n",
1183 (unsigned long long)oi->ip_blkno, inode->i_nlink, oi->ip_flags);
Mark Fashehccd979b2005-12-15 14:31:24 -08001184
Mark Fasheh379dfe92006-09-08 14:21:03 -07001185 if (oi->ip_flags & OCFS2_INODE_MAYBE_ORPHANED)
1186 generic_delete_inode(inode);
1187 else
1188 generic_drop_inode(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001189
1190 mlog_exit_void();
1191}
1192
1193/*
Mark Fashehccd979b2005-12-15 14:31:24 -08001194 * This is called from our getattr.
1195 */
1196int ocfs2_inode_revalidate(struct dentry *dentry)
1197{
1198 struct inode *inode = dentry->d_inode;
1199 int status = 0;
1200
Mark Fashehb06970532006-03-03 10:24:33 -08001201 mlog_entry("(inode = 0x%p, ino = %llu)\n", inode,
1202 inode ? (unsigned long long)OCFS2_I(inode)->ip_blkno : 0ULL);
Mark Fashehccd979b2005-12-15 14:31:24 -08001203
1204 if (!inode) {
1205 mlog(0, "eep, no inode!\n");
1206 status = -ENOENT;
1207 goto bail;
1208 }
1209
1210 spin_lock(&OCFS2_I(inode)->ip_lock);
1211 if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED) {
1212 spin_unlock(&OCFS2_I(inode)->ip_lock);
1213 mlog(0, "inode deleted!\n");
1214 status = -ENOENT;
1215 goto bail;
1216 }
1217 spin_unlock(&OCFS2_I(inode)->ip_lock);
1218
Mark Fashehe63aecb62007-10-18 15:30:42 -07001219 /* Let ocfs2_inode_lock do the work of updating our struct
Mark Fashehccd979b2005-12-15 14:31:24 -08001220 * inode for us. */
Mark Fashehe63aecb62007-10-18 15:30:42 -07001221 status = ocfs2_inode_lock(inode, NULL, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -08001222 if (status < 0) {
1223 if (status != -ENOENT)
1224 mlog_errno(status);
1225 goto bail;
1226 }
Mark Fashehe63aecb62007-10-18 15:30:42 -07001227 ocfs2_inode_unlock(inode, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -08001228bail:
1229 mlog_exit(status);
1230
1231 return status;
1232}
1233
1234/*
1235 * Updates a disk inode from a
1236 * struct inode.
1237 * Only takes ip_lock.
1238 */
Mark Fasheh1fabe142006-10-09 18:11:45 -07001239int ocfs2_mark_inode_dirty(handle_t *handle,
Mark Fashehccd979b2005-12-15 14:31:24 -08001240 struct inode *inode,
1241 struct buffer_head *bh)
1242{
1243 int status;
1244 struct ocfs2_dinode *fe = (struct ocfs2_dinode *) bh->b_data;
1245
Mark Fashehb06970532006-03-03 10:24:33 -08001246 mlog_entry("(inode %llu)\n",
1247 (unsigned long long)OCFS2_I(inode)->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08001248
Joel Becker0cf2f762009-02-12 16:41:25 -08001249 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), bh,
Joel Becker13723d02008-10-17 19:25:01 -07001250 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -08001251 if (status < 0) {
1252 mlog_errno(status);
1253 goto leave;
1254 }
1255
1256 spin_lock(&OCFS2_I(inode)->ip_lock);
1257 fe->i_clusters = cpu_to_le32(OCFS2_I(inode)->ip_clusters);
Jan Kara6e4b0d52007-04-27 11:08:01 -07001258 ocfs2_get_inode_flags(OCFS2_I(inode));
Herbert Poetzlca4d1472006-07-03 17:27:12 -07001259 fe->i_attr = cpu_to_le32(OCFS2_I(inode)->ip_attr);
Mark Fasheh15b1e362007-09-07 13:58:15 -07001260 fe->i_dyn_features = cpu_to_le16(OCFS2_I(inode)->ip_dyn_features);
Mark Fashehccd979b2005-12-15 14:31:24 -08001261 spin_unlock(&OCFS2_I(inode)->ip_lock);
1262
1263 fe->i_size = cpu_to_le64(i_size_read(inode));
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001264 ocfs2_set_links_count(fe, inode->i_nlink);
Mark Fashehccd979b2005-12-15 14:31:24 -08001265 fe->i_uid = cpu_to_le32(inode->i_uid);
1266 fe->i_gid = cpu_to_le32(inode->i_gid);
1267 fe->i_mode = cpu_to_le16(inode->i_mode);
1268 fe->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
1269 fe->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
1270 fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
1271 fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
1272 fe->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
1273 fe->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
1274
1275 status = ocfs2_journal_dirty(handle, bh);
1276 if (status < 0)
1277 mlog_errno(status);
1278
1279 status = 0;
1280leave:
1281
1282 mlog_exit(status);
1283 return status;
1284}
1285
1286/*
1287 *
1288 * Updates a struct inode from a disk inode.
1289 * does no i/o, only takes ip_lock.
1290 */
1291void ocfs2_refresh_inode(struct inode *inode,
1292 struct ocfs2_dinode *fe)
1293{
Mark Fashehccd979b2005-12-15 14:31:24 -08001294 spin_lock(&OCFS2_I(inode)->ip_lock);
1295
1296 OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
Herbert Poetzlca4d1472006-07-03 17:27:12 -07001297 OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr);
Mark Fasheh15b1e362007-09-07 13:58:15 -07001298 OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features);
Herbert Poetzlca4d1472006-07-03 17:27:12 -07001299 ocfs2_set_inode_flags(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001300 i_size_write(inode, le64_to_cpu(fe->i_size));
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001301 inode->i_nlink = ocfs2_read_links_count(fe);
Mark Fashehccd979b2005-12-15 14:31:24 -08001302 inode->i_uid = le32_to_cpu(fe->i_uid);
1303 inode->i_gid = le32_to_cpu(fe->i_gid);
1304 inode->i_mode = le16_to_cpu(fe->i_mode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001305 if (S_ISLNK(inode->i_mode) && le32_to_cpu(fe->i_clusters) == 0)
1306 inode->i_blocks = 0;
1307 else
Mark Fasheh8110b072007-03-22 16:53:23 -07001308 inode->i_blocks = ocfs2_inode_sector_count(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001309 inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime);
1310 inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec);
1311 inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime);
1312 inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec);
1313 inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime);
1314 inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec);
1315
1316 spin_unlock(&OCFS2_I(inode)->ip_lock);
1317}
Joel Beckerb657c952008-11-13 14:49:11 -08001318
1319int ocfs2_validate_inode_block(struct super_block *sb,
1320 struct buffer_head *bh)
1321{
Joel Beckerd6b32bb2008-10-17 14:55:01 -07001322 int rc;
Joel Beckerb657c952008-11-13 14:49:11 -08001323 struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data;
1324
Joel Becker970e4932008-11-13 14:49:19 -08001325 mlog(0, "Validating dinode %llu\n",
1326 (unsigned long long)bh->b_blocknr);
1327
Joel Beckerb657c952008-11-13 14:49:11 -08001328 BUG_ON(!buffer_uptodate(bh));
1329
Joel Beckerd6b32bb2008-10-17 14:55:01 -07001330 /*
1331 * If the ecc fails, we return the error but otherwise
1332 * leave the filesystem running. We know any error is
1333 * local to this block.
1334 */
1335 rc = ocfs2_validate_meta_ecc(sb, bh->b_data, &di->i_check);
Joel Becker13723d02008-10-17 19:25:01 -07001336 if (rc) {
1337 mlog(ML_ERROR, "Checksum failed for dinode %llu\n",
1338 (unsigned long long)bh->b_blocknr);
Joel Beckerd6b32bb2008-10-17 14:55:01 -07001339 goto bail;
Joel Becker13723d02008-10-17 19:25:01 -07001340 }
Joel Beckerd6b32bb2008-10-17 14:55:01 -07001341
1342 /*
1343 * Errors after here are fatal.
1344 */
1345
1346 rc = -EINVAL;
1347
Joel Beckerb657c952008-11-13 14:49:11 -08001348 if (!OCFS2_IS_VALID_DINODE(di)) {
1349 ocfs2_error(sb, "Invalid dinode #%llu: signature = %.*s\n",
1350 (unsigned long long)bh->b_blocknr, 7,
1351 di->i_signature);
1352 goto bail;
1353 }
1354
1355 if (le64_to_cpu(di->i_blkno) != bh->b_blocknr) {
1356 ocfs2_error(sb, "Invalid dinode #%llu: i_blkno is %llu\n",
1357 (unsigned long long)bh->b_blocknr,
1358 (unsigned long long)le64_to_cpu(di->i_blkno));
1359 goto bail;
1360 }
1361
1362 if (!(di->i_flags & cpu_to_le32(OCFS2_VALID_FL))) {
1363 ocfs2_error(sb,
1364 "Invalid dinode #%llu: OCFS2_VALID_FL not set\n",
1365 (unsigned long long)bh->b_blocknr);
1366 goto bail;
1367 }
1368
1369 if (le32_to_cpu(di->i_fs_generation) !=
1370 OCFS2_SB(sb)->fs_generation) {
1371 ocfs2_error(sb,
1372 "Invalid dinode #%llu: fs_generation is %u\n",
1373 (unsigned long long)bh->b_blocknr,
1374 le32_to_cpu(di->i_fs_generation));
1375 goto bail;
1376 }
1377
1378 rc = 0;
1379
1380bail:
1381 return rc;
1382}
1383
1384int ocfs2_read_inode_block_full(struct inode *inode, struct buffer_head **bh,
1385 int flags)
1386{
1387 int rc;
1388 struct buffer_head *tmp = *bh;
1389
Joel Becker8cb471e2009-02-10 20:00:41 -08001390 rc = ocfs2_read_blocks(INODE_CACHE(inode), OCFS2_I(inode)->ip_blkno,
1391 1, &tmp, flags, ocfs2_validate_inode_block);
Joel Beckerb657c952008-11-13 14:49:11 -08001392
1393 /* If ocfs2_read_blocks() got us a new bh, pass it up. */
Joel Becker970e4932008-11-13 14:49:19 -08001394 if (!rc && !*bh)
Joel Beckerb657c952008-11-13 14:49:11 -08001395 *bh = tmp;
1396
Joel Beckerb657c952008-11-13 14:49:11 -08001397 return rc;
1398}
1399
1400int ocfs2_read_inode_block(struct inode *inode, struct buffer_head **bh)
1401{
1402 return ocfs2_read_inode_block_full(inode, bh, 0);
1403}
Joel Becker6e5a3d72009-02-10 19:00:37 -08001404
Joel Becker6e5a3d72009-02-10 19:00:37 -08001405
1406static u64 ocfs2_inode_cache_owner(struct ocfs2_caching_info *ci)
1407{
1408 struct ocfs2_inode_info *oi = cache_info_to_inode(ci);
1409
1410 return oi->ip_blkno;
1411}
1412
Joel Becker8cb471e2009-02-10 20:00:41 -08001413static struct super_block *ocfs2_inode_cache_get_super(struct ocfs2_caching_info *ci)
1414{
1415 struct ocfs2_inode_info *oi = cache_info_to_inode(ci);
1416
1417 return oi->vfs_inode.i_sb;
1418}
1419
Joel Becker6e5a3d72009-02-10 19:00:37 -08001420static void ocfs2_inode_cache_lock(struct ocfs2_caching_info *ci)
1421{
1422 struct ocfs2_inode_info *oi = cache_info_to_inode(ci);
1423
1424 spin_lock(&oi->ip_lock);
1425}
1426
1427static void ocfs2_inode_cache_unlock(struct ocfs2_caching_info *ci)
1428{
1429 struct ocfs2_inode_info *oi = cache_info_to_inode(ci);
1430
1431 spin_unlock(&oi->ip_lock);
1432}
1433
1434static void ocfs2_inode_cache_io_lock(struct ocfs2_caching_info *ci)
1435{
1436 struct ocfs2_inode_info *oi = cache_info_to_inode(ci);
1437
1438 mutex_lock(&oi->ip_io_mutex);
1439}
1440
1441static void ocfs2_inode_cache_io_unlock(struct ocfs2_caching_info *ci)
1442{
1443 struct ocfs2_inode_info *oi = cache_info_to_inode(ci);
1444
1445 mutex_unlock(&oi->ip_io_mutex);
1446}
1447
1448const struct ocfs2_caching_operations ocfs2_inode_caching_ops = {
1449 .co_owner = ocfs2_inode_cache_owner,
Joel Becker8cb471e2009-02-10 20:00:41 -08001450 .co_get_super = ocfs2_inode_cache_get_super,
Joel Becker6e5a3d72009-02-10 19:00:37 -08001451 .co_cache_lock = ocfs2_inode_cache_lock,
1452 .co_cache_unlock = ocfs2_inode_cache_unlock,
1453 .co_io_lock = ocfs2_inode_cache_io_lock,
1454 .co_io_unlock = ocfs2_inode_cache_io_unlock,
1455};
1456