blob: eece3e05d9d0124d04b81c940c1289f876e700bb [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>
Mark Fashehccd979b2005-12-15 14:31:24 -080028#include <linux/highmem.h>
29#include <linux/pagemap.h>
Jan Karaa90714c2008-10-09 19:38:40 +020030#include <linux/quotaops.h>
Mark Fashehccd979b2005-12-15 14:31:24 -080031
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"
Mark Fasheh9b7895e2008-11-12 16:27:44 -080040#include "dir.h"
Joel Beckerd6b32bb2008-10-17 14:55:01 -070041#include "blockcheck.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080042#include "dlmglue.h"
43#include "extent_map.h"
44#include "file.h"
Mark Fashehb4df6ed2006-02-22 17:35:08 -080045#include "heartbeat.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080046#include "inode.h"
47#include "journal.h"
48#include "namei.h"
49#include "suballoc.h"
50#include "super.h"
51#include "symlink.h"
52#include "sysfile.h"
53#include "uptodate.h"
Tiger Yangcf1d6c72008-08-18 17:11:00 +080054#include "xattr.h"
Tao Ma8b2c0db2009-08-18 11:43:49 +080055#include "refcounttree.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080056
57#include "buffer_head_io.h"
58
Mark Fashehccd979b2005-12-15 14:31:24 -080059struct ocfs2_find_inode_args
60{
61 u64 fi_blkno;
62 unsigned long fi_ino;
63 unsigned int fi_flags;
Jan Kara5fa06132008-01-11 00:11:45 +010064 unsigned int fi_sysfile_type;
Mark Fashehccd979b2005-12-15 14:31:24 -080065};
66
Jan Kara5fa06132008-01-11 00:11:45 +010067static struct lock_class_key ocfs2_sysfile_lock_key[NUM_SYSTEM_INODES];
68
Mark Fashehccd979b2005-12-15 14:31:24 -080069static int ocfs2_read_locked_inode(struct inode *inode,
70 struct ocfs2_find_inode_args *args);
71static int ocfs2_init_locked_inode(struct inode *inode, void *opaque);
72static int ocfs2_find_actor(struct inode *inode, void *opaque);
73static int ocfs2_truncate_for_delete(struct ocfs2_super *osb,
74 struct inode *inode,
75 struct buffer_head *fe_bh);
76
Herbert Poetzlca4d1472006-07-03 17:27:12 -070077void ocfs2_set_inode_flags(struct inode *inode)
78{
79 unsigned int flags = OCFS2_I(inode)->ip_attr;
80
81 inode->i_flags &= ~(S_IMMUTABLE |
82 S_SYNC | S_APPEND | S_NOATIME | S_DIRSYNC);
83
84 if (flags & OCFS2_IMMUTABLE_FL)
85 inode->i_flags |= S_IMMUTABLE;
86
87 if (flags & OCFS2_SYNC_FL)
88 inode->i_flags |= S_SYNC;
89 if (flags & OCFS2_APPEND_FL)
90 inode->i_flags |= S_APPEND;
91 if (flags & OCFS2_NOATIME_FL)
92 inode->i_flags |= S_NOATIME;
93 if (flags & OCFS2_DIRSYNC_FL)
94 inode->i_flags |= S_DIRSYNC;
95}
96
Jan Kara6e4b0d52007-04-27 11:08:01 -070097/* Propagate flags from i_flags to OCFS2_I(inode)->ip_attr */
98void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi)
99{
100 unsigned int flags = oi->vfs_inode.i_flags;
101
102 oi->ip_attr &= ~(OCFS2_SYNC_FL|OCFS2_APPEND_FL|
103 OCFS2_IMMUTABLE_FL|OCFS2_NOATIME_FL|OCFS2_DIRSYNC_FL);
104 if (flags & S_SYNC)
105 oi->ip_attr |= OCFS2_SYNC_FL;
106 if (flags & S_APPEND)
107 oi->ip_attr |= OCFS2_APPEND_FL;
108 if (flags & S_IMMUTABLE)
109 oi->ip_attr |= OCFS2_IMMUTABLE_FL;
110 if (flags & S_NOATIME)
111 oi->ip_attr |= OCFS2_NOATIME_FL;
112 if (flags & S_DIRSYNC)
113 oi->ip_attr |= OCFS2_DIRSYNC_FL;
114}
115
wengang wang6ca497a2009-03-06 21:29:10 +0800116struct inode *ocfs2_ilookup(struct super_block *sb, u64 blkno)
117{
118 struct ocfs2_find_inode_args args;
119
120 args.fi_blkno = blkno;
121 args.fi_flags = 0;
122 args.fi_ino = ino_from_blkno(sb, blkno);
123 args.fi_sysfile_type = 0;
124
125 return ilookup5(sb, blkno, ocfs2_find_actor, &args);
126}
Jan Kara5fa06132008-01-11 00:11:45 +0100127struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 blkno, unsigned flags,
128 int sysfile_type)
Mark Fashehccd979b2005-12-15 14:31:24 -0800129{
130 struct inode *inode = NULL;
131 struct super_block *sb = osb->sb;
132 struct ocfs2_find_inode_args args;
133
Mark Fashehb06970532006-03-03 10:24:33 -0800134 mlog_entry("(blkno = %llu)\n", (unsigned long long)blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -0800135
136 /* Ok. By now we've either got the offsets passed to us by the
137 * caller, or we just pulled them off the bh. Lets do some
138 * sanity checks to make sure they're OK. */
139 if (blkno == 0) {
140 inode = ERR_PTR(-EINVAL);
141 mlog_errno(PTR_ERR(inode));
142 goto bail;
143 }
144
145 args.fi_blkno = blkno;
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700146 args.fi_flags = flags;
Mark Fashehccd979b2005-12-15 14:31:24 -0800147 args.fi_ino = ino_from_blkno(sb, blkno);
Jan Kara5fa06132008-01-11 00:11:45 +0100148 args.fi_sysfile_type = sysfile_type;
Mark Fashehccd979b2005-12-15 14:31:24 -0800149
150 inode = iget5_locked(sb, args.fi_ino, ocfs2_find_actor,
151 ocfs2_init_locked_inode, &args);
152 /* inode was *not* in the inode cache. 2.6.x requires
153 * us to do our own read_inode call and unlock it
154 * afterwards. */
155 if (inode && inode->i_state & I_NEW) {
156 mlog(0, "Inode was not in inode cache, reading it.\n");
157 ocfs2_read_locked_inode(inode, &args);
158 unlock_new_inode(inode);
159 }
160 if (inode == NULL) {
161 inode = ERR_PTR(-ENOMEM);
162 mlog_errno(PTR_ERR(inode));
163 goto bail;
164 }
165 if (is_bad_inode(inode)) {
166 iput(inode);
167 inode = ERR_PTR(-ESTALE);
Mark Fashehccd979b2005-12-15 14:31:24 -0800168 goto bail;
169 }
170
171bail:
172 if (!IS_ERR(inode)) {
Mark Fashehb06970532006-03-03 10:24:33 -0800173 mlog(0, "returning inode with number %llu\n",
174 (unsigned long long)OCFS2_I(inode)->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -0800175 mlog_exit_ptr(inode);
Mark Fasheh6a1bd4a2007-01-03 17:06:59 -0800176 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800177
178 return inode;
179}
180
181
182/*
183 * here's how inodes get read from disk:
184 * iget5_locked -> find_actor -> OCFS2_FIND_ACTOR
185 * found? : return the in-memory inode
186 * not found? : get_new_inode -> OCFS2_INIT_LOCKED_INODE
187 */
188
189static int ocfs2_find_actor(struct inode *inode, void *opaque)
190{
191 struct ocfs2_find_inode_args *args = NULL;
192 struct ocfs2_inode_info *oi = OCFS2_I(inode);
193 int ret = 0;
194
195 mlog_entry("(0x%p, %lu, 0x%p)\n", inode, inode->i_ino, opaque);
196
197 args = opaque;
198
199 mlog_bug_on_msg(!inode, "No inode in find actor!\n");
200
201 if (oi->ip_blkno != args->fi_blkno)
202 goto bail;
203
Mark Fashehccd979b2005-12-15 14:31:24 -0800204 ret = 1;
205bail:
206 mlog_exit(ret);
207 return ret;
208}
209
210/*
211 * initialize the new inode, but don't do anything that would cause
212 * us to sleep.
213 * return 0 on success, 1 on failure
214 */
215static int ocfs2_init_locked_inode(struct inode *inode, void *opaque)
216{
217 struct ocfs2_find_inode_args *args = opaque;
Jan Karacb257972009-06-04 15:26:50 +0200218 static struct lock_class_key ocfs2_quota_ip_alloc_sem_key,
219 ocfs2_file_ip_alloc_sem_key;
Mark Fashehccd979b2005-12-15 14:31:24 -0800220
221 mlog_entry("inode = %p, opaque = %p\n", inode, opaque);
222
223 inode->i_ino = args->fi_ino;
224 OCFS2_I(inode)->ip_blkno = args->fi_blkno;
Jan Kara5fa06132008-01-11 00:11:45 +0100225 if (args->fi_sysfile_type != 0)
226 lockdep_set_class(&inode->i_mutex,
227 &ocfs2_sysfile_lock_key[args->fi_sysfile_type]);
Jan Karacb257972009-06-04 15:26:50 +0200228 if (args->fi_sysfile_type == USER_QUOTA_SYSTEM_INODE ||
229 args->fi_sysfile_type == GROUP_QUOTA_SYSTEM_INODE ||
230 args->fi_sysfile_type == LOCAL_USER_QUOTA_SYSTEM_INODE ||
231 args->fi_sysfile_type == LOCAL_GROUP_QUOTA_SYSTEM_INODE)
232 lockdep_set_class(&OCFS2_I(inode)->ip_alloc_sem,
233 &ocfs2_quota_ip_alloc_sem_key);
234 else
235 lockdep_set_class(&OCFS2_I(inode)->ip_alloc_sem,
236 &ocfs2_file_ip_alloc_sem_key);
Mark Fashehccd979b2005-12-15 14:31:24 -0800237
238 mlog_exit(0);
239 return 0;
240}
241
Joel Beckerb657c952008-11-13 14:49:11 -0800242void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
243 int create_ino)
Mark Fashehccd979b2005-12-15 14:31:24 -0800244{
245 struct super_block *sb;
246 struct ocfs2_super *osb;
Mark Fasheh53da4932008-07-21 14:29:16 -0700247 int use_plocks = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -0800248
Mark Fashehb06970532006-03-03 10:24:33 -0800249 mlog_entry("(0x%p, size:%llu)\n", inode,
Mark Fasheh1ca1a112007-04-27 16:01:25 -0700250 (unsigned long long)le64_to_cpu(fe->i_size));
Mark Fashehccd979b2005-12-15 14:31:24 -0800251
252 sb = inode->i_sb;
253 osb = OCFS2_SB(sb);
254
Mark Fasheh53da4932008-07-21 14:29:16 -0700255 if ((osb->s_mount_opt & OCFS2_MOUNT_LOCALFLOCKS) ||
256 ocfs2_mount_local(osb) || !ocfs2_stack_supports_plocks())
257 use_plocks = 0;
258
Joel Beckerb657c952008-11-13 14:49:11 -0800259 /*
260 * These have all been checked by ocfs2_read_inode_block() or set
261 * by ocfs2_mknod_locked(), so a failure is a code bug.
262 */
263 BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); /* This means that read_inode
264 cannot create a superblock
265 inode today. change if
266 that is needed. */
267 BUG_ON(!(fe->i_flags & cpu_to_le32(OCFS2_VALID_FL)));
268 BUG_ON(le32_to_cpu(fe->i_fs_generation) != osb->fs_generation);
Mark Fashehccd979b2005-12-15 14:31:24 -0800269
Mark Fashehccd979b2005-12-15 14:31:24 -0800270
Mark Fasheh8110b072007-03-22 16:53:23 -0700271 OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
272 OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr);
Mark Fasheh15b1e362007-09-07 13:58:15 -0700273 OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features);
Mark Fasheh8110b072007-03-22 16:53:23 -0700274
Mark Fashehccd979b2005-12-15 14:31:24 -0800275 inode->i_version = 1;
276 inode->i_generation = le32_to_cpu(fe->i_generation);
277 inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev));
278 inode->i_mode = le16_to_cpu(fe->i_mode);
279 inode->i_uid = le32_to_cpu(fe->i_uid);
280 inode->i_gid = le32_to_cpu(fe->i_gid);
Mark Fashehccd979b2005-12-15 14:31:24 -0800281
282 /* Fast symlinks will have i_size but no allocated clusters. */
283 if (S_ISLNK(inode->i_mode) && !fe->i_clusters)
284 inode->i_blocks = 0;
285 else
Mark Fasheh8110b072007-03-22 16:53:23 -0700286 inode->i_blocks = ocfs2_inode_sector_count(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800287 inode->i_mapping->a_ops = &ocfs2_aops;
Mark Fashehccd979b2005-12-15 14:31:24 -0800288 inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime);
289 inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec);
290 inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime);
291 inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec);
292 inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime);
293 inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec);
294
295 if (OCFS2_I(inode)->ip_blkno != le64_to_cpu(fe->i_blkno))
296 mlog(ML_ERROR,
Mark Fashehb06970532006-03-03 10:24:33 -0800297 "ip_blkno %llu != i_blkno %llu!\n",
298 (unsigned long long)OCFS2_I(inode)->ip_blkno,
Mark Fasheh1ca1a112007-04-27 16:01:25 -0700299 (unsigned long long)le64_to_cpu(fe->i_blkno));
Mark Fashehccd979b2005-12-15 14:31:24 -0800300
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800301 inode->i_nlink = ocfs2_read_links_count(fe);
Mark Fashehccd979b2005-12-15 14:31:24 -0800302
Jan Karabbbd0eb2008-08-21 18:22:30 +0200303 if (fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) {
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700304 OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SYSTEM_FILE;
Jan Karabbbd0eb2008-08-21 18:22:30 +0200305 inode->i_flags |= S_NOQUOTA;
306 }
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700307
Mark Fashehccd979b2005-12-15 14:31:24 -0800308 if (fe->i_flags & cpu_to_le32(OCFS2_LOCAL_ALLOC_FL)) {
309 OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP;
310 mlog(0, "local alloc inode: i_ino=%lu\n", inode->i_ino);
311 } else if (fe->i_flags & cpu_to_le32(OCFS2_BITMAP_FL)) {
312 OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP;
Jan Kara1a224ad2008-08-20 15:43:36 +0200313 } else if (fe->i_flags & cpu_to_le32(OCFS2_QUOTA_FL)) {
314 inode->i_flags |= S_NOQUOTA;
Mark Fashehccd979b2005-12-15 14:31:24 -0800315 } else if (fe->i_flags & cpu_to_le32(OCFS2_SUPER_BLOCK_FL)) {
316 mlog(0, "superblock inode: i_ino=%lu\n", inode->i_ino);
317 /* we can't actually hit this as read_inode can't
318 * handle superblocks today ;-) */
319 BUG();
320 }
321
322 switch (inode->i_mode & S_IFMT) {
323 case S_IFREG:
Mark Fasheh53da4932008-07-21 14:29:16 -0700324 if (use_plocks)
325 inode->i_fop = &ocfs2_fops;
326 else
327 inode->i_fop = &ocfs2_fops_no_plocks;
Mark Fashehccd979b2005-12-15 14:31:24 -0800328 inode->i_op = &ocfs2_file_iops;
329 i_size_write(inode, le64_to_cpu(fe->i_size));
330 break;
331 case S_IFDIR:
332 inode->i_op = &ocfs2_dir_iops;
Mark Fasheh53da4932008-07-21 14:29:16 -0700333 if (use_plocks)
334 inode->i_fop = &ocfs2_dops;
335 else
336 inode->i_fop = &ocfs2_dops_no_plocks;
Mark Fashehccd979b2005-12-15 14:31:24 -0800337 i_size_write(inode, le64_to_cpu(fe->i_size));
338 break;
339 case S_IFLNK:
340 if (ocfs2_inode_is_fast_symlink(inode))
341 inode->i_op = &ocfs2_fast_symlink_inode_operations;
342 else
343 inode->i_op = &ocfs2_symlink_inode_operations;
344 i_size_write(inode, le64_to_cpu(fe->i_size));
345 break;
346 default:
347 inode->i_op = &ocfs2_special_file_iops;
348 init_special_inode(inode, inode->i_mode,
349 inode->i_rdev);
350 break;
351 }
352
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700353 if (create_ino) {
354 inode->i_ino = ino_from_blkno(inode->i_sb,
355 le64_to_cpu(fe->i_blkno));
356
357 /*
358 * If we ever want to create system files from kernel,
359 * the generation argument to
360 * ocfs2_inode_lock_res_init() will have to change.
361 */
Mark Fasheh1ca1a112007-04-27 16:01:25 -0700362 BUG_ON(le32_to_cpu(fe->i_flags) & OCFS2_SYSTEM_FL);
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700363
Mark Fashehe63aecb62007-10-18 15:30:42 -0700364 ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_inode_lockres,
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700365 OCFS2_LOCK_TYPE_META, 0, inode);
Tiger Yang50008632007-03-20 16:01:38 -0700366
367 ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres,
368 OCFS2_LOCK_TYPE_OPEN, 0, inode);
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700369 }
370
Mark Fashehccd979b2005-12-15 14:31:24 -0800371 ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_rw_lockres,
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700372 OCFS2_LOCK_TYPE_RW, inode->i_generation,
373 inode);
374
Herbert Poetzlca4d1472006-07-03 17:27:12 -0700375 ocfs2_set_inode_flags(inode);
Herbert Poetzlca4d1472006-07-03 17:27:12 -0700376
Tao Ma13821152009-02-25 00:53:23 +0800377 OCFS2_I(inode)->ip_last_used_slot = 0;
378 OCFS2_I(inode)->ip_last_used_group = 0;
Mark Fashehe3b4a972009-12-07 13:16:07 -0800379
380 if (S_ISDIR(inode->i_mode))
381 ocfs2_resv_set_type(&OCFS2_I(inode)->ip_la_data_resv,
382 OCFS2_RESV_FLAG_DIR);
Joel Beckerb657c952008-11-13 14:49:11 -0800383 mlog_exit_void();
Mark Fashehccd979b2005-12-15 14:31:24 -0800384}
385
386static int ocfs2_read_locked_inode(struct inode *inode,
387 struct ocfs2_find_inode_args *args)
388{
389 struct super_block *sb;
390 struct ocfs2_super *osb;
391 struct ocfs2_dinode *fe;
392 struct buffer_head *bh = NULL;
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700393 int status, can_lock;
394 u32 generation = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -0800395
396 mlog_entry("(0x%p, 0x%p)\n", inode, args);
397
398 status = -EINVAL;
399 if (inode == NULL || inode->i_sb == NULL) {
400 mlog(ML_ERROR, "bad inode\n");
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700401 return status;
Mark Fashehccd979b2005-12-15 14:31:24 -0800402 }
403 sb = inode->i_sb;
404 osb = OCFS2_SB(sb);
405
406 if (!args) {
407 mlog(ML_ERROR, "bad inode args\n");
408 make_bad_inode(inode);
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700409 return status;
Mark Fashehccd979b2005-12-15 14:31:24 -0800410 }
411
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700412 /*
413 * To improve performance of cold-cache inode stats, we take
414 * the cluster lock here if possible.
415 *
416 * Generally, OCFS2 never trusts the contents of an inode
417 * unless it's holding a cluster lock, so taking it here isn't
418 * a correctness issue as much as it is a performance
419 * improvement.
420 *
421 * There are three times when taking the lock is not a good idea:
422 *
423 * 1) During startup, before we have initialized the DLM.
424 *
425 * 2) If we are reading certain system files which never get
426 * cluster locks (local alloc, truncate log).
427 *
428 * 3) If the process doing the iget() is responsible for
429 * orphan dir recovery. We're holding the orphan dir lock and
430 * can get into a deadlock with another process on another
431 * node in ->delete_inode().
432 *
433 * #1 and #2 can be simply solved by never taking the lock
434 * here for system files (which are the only type we read
435 * during mount). It's a heavier approach, but our main
436 * concern is user-accesible files anyway.
437 *
438 * #3 works itself out because we'll eventually take the
439 * cluster lock before trusting anything anyway.
440 */
441 can_lock = !(args->fi_flags & OCFS2_FI_FLAG_SYSFILE)
Tiger Yang50008632007-03-20 16:01:38 -0700442 && !(args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY)
Sunil Mushranc271c5c2006-12-05 17:56:35 -0800443 && !ocfs2_mount_local(osb);
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700444
445 /*
446 * To maintain backwards compatibility with older versions of
447 * ocfs2-tools, we still store the generation value for system
448 * files. The only ones that actually matter to userspace are
449 * the journals, but it's easier and inexpensive to just flag
450 * all system files similarly.
451 */
452 if (args->fi_flags & OCFS2_FI_FLAG_SYSFILE)
453 generation = osb->fs_generation;
454
Mark Fashehe63aecb62007-10-18 15:30:42 -0700455 ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_inode_lockres,
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700456 OCFS2_LOCK_TYPE_META,
457 generation, inode);
458
Tiger Yang50008632007-03-20 16:01:38 -0700459 ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres,
460 OCFS2_LOCK_TYPE_OPEN,
461 0, inode);
462
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700463 if (can_lock) {
Tiger Yang50008632007-03-20 16:01:38 -0700464 status = ocfs2_open_lock(inode);
465 if (status) {
466 make_bad_inode(inode);
467 mlog_errno(status);
468 return status;
469 }
Mark Fashehe63aecb62007-10-18 15:30:42 -0700470 status = ocfs2_inode_lock(inode, NULL, 0);
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700471 if (status) {
472 make_bad_inode(inode);
473 mlog_errno(status);
474 return status;
475 }
476 }
477
Tiger Yang50008632007-03-20 16:01:38 -0700478 if (args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY) {
479 status = ocfs2_try_open_lock(inode, 0);
480 if (status) {
Sunil Mushran2bd63212010-01-25 16:57:38 -0800481 make_bad_inode(inode);
Tiger Yang50008632007-03-20 16:01:38 -0700482 return status;
483 }
484 }
485
Joel Beckerb657c952008-11-13 14:49:11 -0800486 if (can_lock) {
487 status = ocfs2_read_inode_block_full(inode, &bh,
488 OCFS2_BH_IGNORE_CACHE);
489 } else {
Joel Beckerda1e9092008-10-09 17:20:29 -0700490 status = ocfs2_read_blocks_sync(osb, args->fi_blkno, 1, &bh);
Sunil Mushranf5ce5a02010-08-12 16:24:26 -0700491 /*
492 * If buffer is in jbd, then its checksum may not have been
493 * computed as yet.
494 */
495 if (!status && !buffer_jbd(bh))
Joel Beckerb657c952008-11-13 14:49:11 -0800496 status = ocfs2_validate_inode_block(osb->sb, bh);
497 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800498 if (status < 0) {
499 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -0800500 goto bail;
501 }
502
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700503 status = -EINVAL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800504 fe = (struct ocfs2_dinode *) bh->b_data;
Mark Fashehccd979b2005-12-15 14:31:24 -0800505
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700506 /*
507 * This is a code bug. Right now the caller needs to
508 * understand whether it is asking for a system file inode or
509 * not so the proper lock names can be built.
510 */
511 mlog_bug_on_msg(!!(fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) !=
512 !!(args->fi_flags & OCFS2_FI_FLAG_SYSFILE),
513 "Inode %llu: system file state is ambigous\n",
514 (unsigned long long)args->fi_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -0800515
516 if (S_ISCHR(le16_to_cpu(fe->i_mode)) ||
517 S_ISBLK(le16_to_cpu(fe->i_mode)))
Joel Beckerb657c952008-11-13 14:49:11 -0800518 inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev));
Mark Fashehccd979b2005-12-15 14:31:24 -0800519
Joel Beckerb657c952008-11-13 14:49:11 -0800520 ocfs2_populate_inode(inode, fe, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -0800521
522 BUG_ON(args->fi_blkno != le64_to_cpu(fe->i_blkno));
523
Mark Fashehccd979b2005-12-15 14:31:24 -0800524 status = 0;
525
526bail:
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700527 if (can_lock)
Mark Fashehe63aecb62007-10-18 15:30:42 -0700528 ocfs2_inode_unlock(inode, 0);
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700529
530 if (status < 0)
531 make_bad_inode(inode);
532
Mark Fashehccd979b2005-12-15 14:31:24 -0800533 if (args && bh)
534 brelse(bh);
535
536 mlog_exit(status);
537 return status;
538}
539
540void ocfs2_sync_blockdev(struct super_block *sb)
541{
542 sync_blockdev(sb->s_bdev);
543}
544
545static int ocfs2_truncate_for_delete(struct ocfs2_super *osb,
546 struct inode *inode,
547 struct buffer_head *fe_bh)
548{
549 int status = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -0800550 struct ocfs2_dinode *fe;
Mark Fasheh60b11392007-02-16 11:46:50 -0800551 handle_t *handle = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800552
553 mlog_entry_void();
554
555 fe = (struct ocfs2_dinode *) fe_bh->b_data;
556
Mark Fasheh1afc32b2007-09-07 14:46:51 -0700557 /*
558 * This check will also skip truncate of inodes with inline
559 * data and fast symlinks.
560 */
Mark Fasheh3a0782d2007-01-17 12:53:31 -0800561 if (fe->i_clusters) {
Joel Becker2b4e30f2008-09-03 20:03:41 -0700562 if (ocfs2_should_order_data(inode))
563 ocfs2_begin_ordered_truncate(inode, 0);
564
Mark Fasheh60b11392007-02-16 11:46:50 -0800565 handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
566 if (IS_ERR(handle)) {
567 status = PTR_ERR(handle);
Dan Carpenter0350cb02010-04-22 11:39:29 +0200568 handle = NULL;
Mark Fasheh60b11392007-02-16 11:46:50 -0800569 mlog_errno(status);
570 goto out;
571 }
572
Joel Becker0cf2f762009-02-12 16:41:25 -0800573 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode),
574 fe_bh,
Joel Becker13723d02008-10-17 19:25:01 -0700575 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fasheh60b11392007-02-16 11:46:50 -0800576 if (status < 0) {
577 mlog_errno(status);
578 goto out;
579 }
580
581 i_size_write(inode, 0);
582
583 status = ocfs2_mark_inode_dirty(handle, inode, fe_bh);
584 if (status < 0) {
585 mlog_errno(status);
586 goto out;
587 }
588
589 ocfs2_commit_trans(osb, handle);
590 handle = NULL;
591
Tristan Ye78f94672010-05-11 17:54:42 +0800592 status = ocfs2_commit_truncate(osb, inode, fe_bh);
Mark Fasheh3a0782d2007-01-17 12:53:31 -0800593 if (status < 0) {
594 mlog_errno(status);
595 goto out;
596 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800597 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800598
Mark Fasheh60b11392007-02-16 11:46:50 -0800599out:
600 if (handle)
601 ocfs2_commit_trans(osb, handle);
Mark Fashehccd979b2005-12-15 14:31:24 -0800602 mlog_exit(status);
603 return status;
604}
605
606static int ocfs2_remove_inode(struct inode *inode,
607 struct buffer_head *di_bh,
608 struct inode *orphan_dir_inode,
609 struct buffer_head *orphan_dir_bh)
610{
611 int status;
612 struct inode *inode_alloc_inode = NULL;
613 struct buffer_head *inode_alloc_bh = NULL;
Mark Fasheh1fabe142006-10-09 18:11:45 -0700614 handle_t *handle;
Mark Fashehccd979b2005-12-15 14:31:24 -0800615 struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
616 struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data;
617
618 inode_alloc_inode =
619 ocfs2_get_system_file_inode(osb, INODE_ALLOC_SYSTEM_INODE,
620 le16_to_cpu(di->i_suballoc_slot));
621 if (!inode_alloc_inode) {
622 status = -EEXIST;
623 mlog_errno(status);
624 goto bail;
625 }
626
Jes Sorensen1b1dcc12006-01-09 15:59:24 -0800627 mutex_lock(&inode_alloc_inode->i_mutex);
Mark Fashehe63aecb62007-10-18 15:30:42 -0700628 status = ocfs2_inode_lock(inode_alloc_inode, &inode_alloc_bh, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -0800629 if (status < 0) {
Jes Sorensen1b1dcc12006-01-09 15:59:24 -0800630 mutex_unlock(&inode_alloc_inode->i_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -0800631
632 mlog_errno(status);
633 goto bail;
634 }
635
Jan Karaa90714c2008-10-09 19:38:40 +0200636 handle = ocfs2_start_trans(osb, OCFS2_DELETE_INODE_CREDITS +
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800637 ocfs2_quota_trans_credits(inode->i_sb));
Mark Fashehccd979b2005-12-15 14:31:24 -0800638 if (IS_ERR(handle)) {
639 status = PTR_ERR(handle);
640 mlog_errno(status);
641 goto bail_unlock;
642 }
643
Li Dongyangd4cd1872010-04-22 16:11:19 +0800644 if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)) {
645 status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode,
646 orphan_dir_bh);
647 if (status < 0) {
648 mlog_errno(status);
649 goto bail_commit;
650 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800651 }
652
653 /* set the inodes dtime */
Joel Becker0cf2f762009-02-12 16:41:25 -0800654 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), di_bh,
Joel Becker13723d02008-10-17 19:25:01 -0700655 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -0800656 if (status < 0) {
657 mlog_errno(status);
658 goto bail_commit;
659 }
660
661 di->i_dtime = cpu_to_le64(CURRENT_TIME.tv_sec);
Marcin Slusarz4092d492007-12-25 15:52:59 +0100662 di->i_flags &= cpu_to_le32(~(OCFS2_VALID_FL | OCFS2_ORPHANED_FL));
Joel Beckerec20cec2010-03-19 14:13:52 -0700663 ocfs2_journal_dirty(handle, di_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800664
Joel Becker8cb471e2009-02-10 20:00:41 -0800665 ocfs2_remove_from_cache(INODE_CACHE(inode), di_bh);
Christoph Hellwig63936dd2010-03-03 09:05:01 -0500666 dquot_free_inode(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800667
668 status = ocfs2_free_dinode(handle, inode_alloc_inode,
669 inode_alloc_bh, di);
670 if (status < 0)
671 mlog_errno(status);
672
673bail_commit:
Mark Fasheh02dc1af2006-10-09 16:48:10 -0700674 ocfs2_commit_trans(osb, handle);
Mark Fashehccd979b2005-12-15 14:31:24 -0800675bail_unlock:
Mark Fashehe63aecb62007-10-18 15:30:42 -0700676 ocfs2_inode_unlock(inode_alloc_inode, 1);
Jes Sorensen1b1dcc12006-01-09 15:59:24 -0800677 mutex_unlock(&inode_alloc_inode->i_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -0800678 brelse(inode_alloc_bh);
679bail:
680 iput(inode_alloc_inode);
681
682 return status;
683}
684
Sunil Mushran2bd63212010-01-25 16:57:38 -0800685/*
Mark Fashehb4df6ed2006-02-22 17:35:08 -0800686 * Serialize with orphan dir recovery. If the process doing
687 * recovery on this orphan dir does an iget() with the dir
688 * i_mutex held, we'll deadlock here. Instead we detect this
689 * and exit early - recovery will wipe this inode for us.
690 */
691static int ocfs2_check_orphan_recovery_state(struct ocfs2_super *osb,
692 int slot)
693{
694 int ret = 0;
695
696 spin_lock(&osb->osb_lock);
697 if (ocfs2_node_map_test_bit(osb, &osb->osb_recovering_orphan_dirs, slot)) {
698 mlog(0, "Recovery is happening on orphan dir %d, will skip "
699 "this inode\n", slot);
700 ret = -EDEADLK;
701 goto out;
702 }
703 /* This signals to the orphan recovery process that it should
704 * wait for us to handle the wipe. */
705 osb->osb_orphan_wipes[slot]++;
706out:
707 spin_unlock(&osb->osb_lock);
708 return ret;
709}
710
711static void ocfs2_signal_wipe_completion(struct ocfs2_super *osb,
712 int slot)
713{
714 spin_lock(&osb->osb_lock);
715 osb->osb_orphan_wipes[slot]--;
716 spin_unlock(&osb->osb_lock);
717
718 wake_up(&osb->osb_wipe_event);
719}
720
Mark Fashehccd979b2005-12-15 14:31:24 -0800721static int ocfs2_wipe_inode(struct inode *inode,
722 struct buffer_head *di_bh)
723{
Joel Beckerd5776322010-05-03 19:15:49 -0700724 int status, orphaned_slot = -1;
Mark Fashehccd979b2005-12-15 14:31:24 -0800725 struct inode *orphan_dir_inode = NULL;
726 struct buffer_head *orphan_dir_bh = NULL;
727 struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
Li Dongyangd4cd1872010-04-22 16:11:19 +0800728 struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data;
Mark Fashehccd979b2005-12-15 14:31:24 -0800729
Li Dongyangd4cd1872010-04-22 16:11:19 +0800730 if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)) {
731 orphaned_slot = le16_to_cpu(di->i_orphaned_slot);
Mark Fashehb4df6ed2006-02-22 17:35:08 -0800732
Li Dongyangd4cd1872010-04-22 16:11:19 +0800733 status = ocfs2_check_orphan_recovery_state(osb, orphaned_slot);
734 if (status)
735 return status;
Mark Fashehb4df6ed2006-02-22 17:35:08 -0800736
Li Dongyangd4cd1872010-04-22 16:11:19 +0800737 orphan_dir_inode = ocfs2_get_system_file_inode(osb,
738 ORPHAN_DIR_SYSTEM_INODE,
739 orphaned_slot);
740 if (!orphan_dir_inode) {
741 status = -EEXIST;
742 mlog_errno(status);
743 goto bail;
744 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800745
Li Dongyangd4cd1872010-04-22 16:11:19 +0800746 /* Lock the orphan dir. The lock will be held for the entire
747 * delete_inode operation. We do this now to avoid races with
748 * recovery completion on other nodes. */
749 mutex_lock(&orphan_dir_inode->i_mutex);
750 status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
751 if (status < 0) {
752 mutex_unlock(&orphan_dir_inode->i_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -0800753
Li Dongyangd4cd1872010-04-22 16:11:19 +0800754 mlog_errno(status);
755 goto bail;
756 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800757 }
758
759 /* we do this while holding the orphan dir lock because we
Mark Fasheh34d024f2007-09-24 15:56:19 -0700760 * don't want recovery being run from another node to try an
761 * inode delete underneath us -- this will result in two nodes
Mark Fashehccd979b2005-12-15 14:31:24 -0800762 * truncating the same file! */
763 status = ocfs2_truncate_for_delete(osb, inode, di_bh);
764 if (status < 0) {
765 mlog_errno(status);
766 goto bail_unlock_dir;
767 }
768
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800769 /* Remove any dir index tree */
770 if (S_ISDIR(inode->i_mode)) {
771 status = ocfs2_dx_dir_truncate(inode, di_bh);
772 if (status) {
773 mlog_errno(status);
774 goto bail_unlock_dir;
775 }
776 }
777
Tiger Yangcf1d6c72008-08-18 17:11:00 +0800778 /*Free extended attribute resources associated with this inode.*/
779 status = ocfs2_xattr_remove(inode, di_bh);
780 if (status < 0) {
781 mlog_errno(status);
782 goto bail_unlock_dir;
783 }
784
Tao Ma8b2c0db2009-08-18 11:43:49 +0800785 status = ocfs2_remove_refcount_tree(inode, di_bh);
786 if (status < 0) {
787 mlog_errno(status);
788 goto bail_unlock_dir;
789 }
790
Mark Fashehccd979b2005-12-15 14:31:24 -0800791 status = ocfs2_remove_inode(inode, di_bh, orphan_dir_inode,
792 orphan_dir_bh);
793 if (status < 0)
794 mlog_errno(status);
795
796bail_unlock_dir:
Li Dongyangd4cd1872010-04-22 16:11:19 +0800797 if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)
798 return status;
799
Mark Fashehe63aecb62007-10-18 15:30:42 -0700800 ocfs2_inode_unlock(orphan_dir_inode, 1);
Jes Sorensen1b1dcc12006-01-09 15:59:24 -0800801 mutex_unlock(&orphan_dir_inode->i_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -0800802 brelse(orphan_dir_bh);
803bail:
804 iput(orphan_dir_inode);
Mark Fashehb4df6ed2006-02-22 17:35:08 -0800805 ocfs2_signal_wipe_completion(osb, orphaned_slot);
Mark Fashehccd979b2005-12-15 14:31:24 -0800806
807 return status;
808}
809
810/* There is a series of simple checks that should be done before a
Mark Fasheh34d024f2007-09-24 15:56:19 -0700811 * trylock is even considered. Encapsulate those in this function. */
Mark Fashehccd979b2005-12-15 14:31:24 -0800812static int ocfs2_inode_is_valid_to_delete(struct inode *inode)
813{
814 int ret = 0;
815 struct ocfs2_inode_info *oi = OCFS2_I(inode);
816 struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
817
818 /* We shouldn't be getting here for the root directory
819 * inode.. */
820 if (inode == osb->root_inode) {
821 mlog(ML_ERROR, "Skipping delete of root inode.\n");
822 goto bail;
823 }
824
Mark Fasheh34d024f2007-09-24 15:56:19 -0700825 /* If we're coming from downconvert_thread we can't go into our own
Mark Fashehccd979b2005-12-15 14:31:24 -0800826 * voting [hello, deadlock city!], so unforuntately we just
827 * have to skip deleting this guy. That's OK though because
828 * the node who's doing the actual deleting should handle it
829 * anyway. */
Mark Fasheh34d024f2007-09-24 15:56:19 -0700830 if (current == osb->dc_task) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800831 mlog(0, "Skipping delete of %lu because we're currently "
Mark Fasheh34d024f2007-09-24 15:56:19 -0700832 "in downconvert\n", inode->i_ino);
Mark Fashehccd979b2005-12-15 14:31:24 -0800833 goto bail;
834 }
835
836 spin_lock(&oi->ip_lock);
837 /* OCFS2 *never* deletes system files. This should technically
838 * never get here as system file inodes should always have a
839 * positive link count. */
840 if (oi->ip_flags & OCFS2_INODE_SYSTEM_FILE) {
Mark Fashehb06970532006-03-03 10:24:33 -0800841 mlog(ML_ERROR, "Skipping delete of system file %llu\n",
842 (unsigned long long)oi->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -0800843 goto bail_unlock;
844 }
845
Mark Fasheh34d024f2007-09-24 15:56:19 -0700846 /* If we have allowd wipe of this inode for another node, it
847 * will be marked here so we can safely skip it. Recovery will
848 * cleanup any inodes we might inadvertantly skip here. */
Mark Fashehccd979b2005-12-15 14:31:24 -0800849 if (oi->ip_flags & OCFS2_INODE_SKIP_DELETE) {
850 mlog(0, "Skipping delete of %lu because another node "
851 "has done this for us.\n", inode->i_ino);
852 goto bail_unlock;
853 }
854
855 ret = 1;
856bail_unlock:
857 spin_unlock(&oi->ip_lock);
858bail:
859 return ret;
860}
861
862/* Query the cluster to determine whether we should wipe an inode from
863 * disk or not.
864 *
865 * Requires the inode to have the cluster lock. */
866static int ocfs2_query_inode_wipe(struct inode *inode,
867 struct buffer_head *di_bh,
868 int *wipe)
869{
870 int status = 0;
871 struct ocfs2_inode_info *oi = OCFS2_I(inode);
872 struct ocfs2_dinode *di;
873
874 *wipe = 0;
875
876 /* While we were waiting for the cluster lock in
877 * ocfs2_delete_inode, another node might have asked to delete
878 * the inode. Recheck our flags to catch this. */
879 if (!ocfs2_inode_is_valid_to_delete(inode)) {
Mark Fashehb06970532006-03-03 10:24:33 -0800880 mlog(0, "Skipping delete of %llu because flags changed\n",
881 (unsigned long long)oi->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -0800882 goto bail;
883 }
884
885 /* Now that we have an up to date inode, we can double check
886 * the link count. */
887 if (inode->i_nlink) {
Mark Fashehb06970532006-03-03 10:24:33 -0800888 mlog(0, "Skipping delete of %llu because nlink = %u\n",
889 (unsigned long long)oi->ip_blkno, inode->i_nlink);
Mark Fashehccd979b2005-12-15 14:31:24 -0800890 goto bail;
891 }
892
893 /* Do some basic inode verification... */
894 di = (struct ocfs2_dinode *) di_bh->b_data;
Li Dongyangd4cd1872010-04-22 16:11:19 +0800895 if (!(di->i_flags & cpu_to_le32(OCFS2_ORPHANED_FL)) &&
896 !(oi->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)) {
Tristan Yeb54c2ca2010-03-19 09:21:10 +0800897 /*
898 * Inodes in the orphan dir must have ORPHANED_FL. The only
899 * inodes that come back out of the orphan dir are reflink
900 * targets. A reflink target may be moved out of the orphan
901 * dir between the time we scan the directory and the time we
902 * process it. This would lead to HAS_REFCOUNT_FL being set but
903 * ORPHANED_FL not.
904 */
905 if (di->i_dyn_features & cpu_to_le16(OCFS2_HAS_REFCOUNT_FL)) {
906 mlog(0, "Reflinked inode %llu is no longer orphaned. "
907 "it shouldn't be deleted\n",
908 (unsigned long long)oi->ip_blkno);
909 goto bail;
910 }
911
Mark Fashehccd979b2005-12-15 14:31:24 -0800912 /* for lack of a better error? */
913 status = -EEXIST;
914 mlog(ML_ERROR,
Mark Fashehb06970532006-03-03 10:24:33 -0800915 "Inode %llu (on-disk %llu) not orphaned! "
Mark Fashehccd979b2005-12-15 14:31:24 -0800916 "Disk flags 0x%x, inode flags 0x%x\n",
Mark Fashehb06970532006-03-03 10:24:33 -0800917 (unsigned long long)oi->ip_blkno,
Mark Fasheh1ca1a112007-04-27 16:01:25 -0700918 (unsigned long long)le64_to_cpu(di->i_blkno),
919 le32_to_cpu(di->i_flags), oi->ip_flags);
Mark Fashehccd979b2005-12-15 14:31:24 -0800920 goto bail;
921 }
922
923 /* has someone already deleted us?! baaad... */
924 if (di->i_dtime) {
925 status = -EEXIST;
926 mlog_errno(status);
927 goto bail;
928 }
929
Mark Fasheh6f16bf62007-03-20 17:17:54 -0700930 /*
931 * This is how ocfs2 determines whether an inode is still live
932 * within the cluster. Every node takes a shared read lock on
933 * the inode open lock in ocfs2_read_locked_inode(). When we
934 * get to ->delete_inode(), each node tries to convert it's
935 * lock to an exclusive. Trylocks are serialized by the inode
936 * meta data lock. If the upconvert suceeds, we know the inode
937 * is no longer live and can be deleted.
938 *
939 * Though we call this with the meta data lock held, the
940 * trylock keeps us from ABBA deadlock.
941 */
942 status = ocfs2_try_open_lock(inode, 1);
Tiger Yang50008632007-03-20 16:01:38 -0700943 if (status == -EAGAIN) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800944 status = 0;
Joe Perches27592362007-11-19 17:53:34 -0800945 mlog(0, "Skipping delete of %llu because it is in use on "
Mark Fashehb06970532006-03-03 10:24:33 -0800946 "other nodes\n", (unsigned long long)oi->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -0800947 goto bail;
948 }
949 if (status < 0) {
950 mlog_errno(status);
951 goto bail;
952 }
953
Tiger Yang50008632007-03-20 16:01:38 -0700954 *wipe = 1;
955 mlog(0, "Inode %llu is ok to wipe from orphan dir %u\n",
956 (unsigned long long)oi->ip_blkno,
957 le16_to_cpu(di->i_orphaned_slot));
Mark Fashehccd979b2005-12-15 14:31:24 -0800958
959bail:
960 return status;
961}
962
963/* Support function for ocfs2_delete_inode. Will help us keep the
964 * inode data in a consistent state for clear_inode. Always truncates
965 * pages, optionally sync's them first. */
966static void ocfs2_cleanup_delete_inode(struct inode *inode,
967 int sync_data)
968{
Mark Fashehb06970532006-03-03 10:24:33 -0800969 mlog(0, "Cleanup inode %llu, sync = %d\n",
970 (unsigned long long)OCFS2_I(inode)->ip_blkno, sync_data);
Mark Fashehccd979b2005-12-15 14:31:24 -0800971 if (sync_data)
972 write_inode_now(inode, 1);
973 truncate_inode_pages(&inode->i_data, 0);
974}
975
Al Viro066d92d2010-06-08 21:28:10 -0400976static void ocfs2_delete_inode(struct inode *inode)
Mark Fashehccd979b2005-12-15 14:31:24 -0800977{
978 int wipe, status;
Joel Beckere4b963f2009-09-02 17:17:36 -0700979 sigset_t oldset;
Mark Fashehccd979b2005-12-15 14:31:24 -0800980 struct buffer_head *di_bh = NULL;
981
982 mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino);
983
Jan Karaa90714c2008-10-09 19:38:40 +0200984 /* When we fail in read_inode() we mark inode as bad. The second test
985 * catches the case when inode allocation fails before allocating
986 * a block for inode. */
987 if (is_bad_inode(inode) || !OCFS2_I(inode)->ip_blkno) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800988 mlog(0, "Skipping delete of bad inode\n");
989 goto bail;
990 }
991
Christoph Hellwig871a2932010-03-03 09:05:07 -0500992 dquot_initialize(inode);
Christoph Hellwig907f4552010-03-03 09:05:06 -0500993
Mark Fashehccd979b2005-12-15 14:31:24 -0800994 if (!ocfs2_inode_is_valid_to_delete(inode)) {
995 /* It's probably not necessary to truncate_inode_pages
996 * here but we do it for safety anyway (it will most
997 * likely be a no-op anyway) */
998 ocfs2_cleanup_delete_inode(inode, 0);
999 goto bail;
1000 }
1001
1002 /* We want to block signals in delete_inode as the lock and
1003 * messaging paths may return us -ERESTARTSYS. Which would
1004 * cause us to exit early, resulting in inodes being orphaned
1005 * forever. */
Joel Beckere4b963f2009-09-02 17:17:36 -07001006 ocfs2_block_signals(&oldset);
Mark Fashehccd979b2005-12-15 14:31:24 -08001007
wengang wang6ca497a2009-03-06 21:29:10 +08001008 /*
1009 * Synchronize us against ocfs2_get_dentry. We take this in
1010 * shared mode so that all nodes can still concurrently
1011 * process deletes.
1012 */
1013 status = ocfs2_nfs_sync_lock(OCFS2_SB(inode->i_sb), 0);
1014 if (status < 0) {
1015 mlog(ML_ERROR, "getting nfs sync lock(PR) failed %d\n", status);
1016 ocfs2_cleanup_delete_inode(inode, 0);
1017 goto bail_unblock;
1018 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001019 /* Lock down the inode. This gives us an up to date view of
1020 * it's metadata (for verification), and allows us to
Mark Fasheh34d024f2007-09-24 15:56:19 -07001021 * serialize delete_inode on multiple nodes.
Mark Fashehccd979b2005-12-15 14:31:24 -08001022 *
1023 * Even though we might be doing a truncate, we don't take the
1024 * allocation lock here as it won't be needed - nobody will
1025 * have the file open.
1026 */
Mark Fashehe63aecb62007-10-18 15:30:42 -07001027 status = ocfs2_inode_lock(inode, &di_bh, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001028 if (status < 0) {
1029 if (status != -ENOENT)
1030 mlog_errno(status);
1031 ocfs2_cleanup_delete_inode(inode, 0);
wengang wang6ca497a2009-03-06 21:29:10 +08001032 goto bail_unlock_nfs_sync;
Mark Fashehccd979b2005-12-15 14:31:24 -08001033 }
1034
1035 /* Query the cluster. This will be the final decision made
1036 * before we go ahead and wipe the inode. */
1037 status = ocfs2_query_inode_wipe(inode, di_bh, &wipe);
1038 if (!wipe || status < 0) {
Mark Fasheh34d024f2007-09-24 15:56:19 -07001039 /* Error and remote inode busy both mean we won't be
Mark Fashehccd979b2005-12-15 14:31:24 -08001040 * removing the inode, so they take almost the same
1041 * path. */
1042 if (status < 0)
1043 mlog_errno(status);
1044
Mark Fasheh34d024f2007-09-24 15:56:19 -07001045 /* Someone in the cluster has disallowed a wipe of
1046 * this inode, or it was never completely
1047 * orphaned. Write out the pages and exit now. */
Mark Fashehccd979b2005-12-15 14:31:24 -08001048 ocfs2_cleanup_delete_inode(inode, 1);
1049 goto bail_unlock_inode;
1050 }
1051
1052 ocfs2_cleanup_delete_inode(inode, 0);
1053
1054 status = ocfs2_wipe_inode(inode, di_bh);
1055 if (status < 0) {
Mark Fashehb4df6ed2006-02-22 17:35:08 -08001056 if (status != -EDEADLK)
1057 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001058 goto bail_unlock_inode;
1059 }
1060
Mark Fasheh24c19ef2006-09-22 17:28:19 -07001061 /*
1062 * Mark the inode as successfully deleted.
1063 *
1064 * This is important for ocfs2_clear_inode() as it will check
1065 * this flag and skip any checkpointing work
1066 *
1067 * ocfs2_stuff_meta_lvb() also uses this flag to invalidate
1068 * the LVB for other nodes.
1069 */
Mark Fashehccd979b2005-12-15 14:31:24 -08001070 OCFS2_I(inode)->ip_flags |= OCFS2_INODE_DELETED;
1071
1072bail_unlock_inode:
Mark Fashehe63aecb62007-10-18 15:30:42 -07001073 ocfs2_inode_unlock(inode, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001074 brelse(di_bh);
wengang wang6ca497a2009-03-06 21:29:10 +08001075
1076bail_unlock_nfs_sync:
1077 ocfs2_nfs_sync_unlock(OCFS2_SB(inode->i_sb), 0);
1078
Mark Fashehccd979b2005-12-15 14:31:24 -08001079bail_unblock:
Joel Beckere4b963f2009-09-02 17:17:36 -07001080 ocfs2_unblock_signals(&oldset);
Mark Fashehccd979b2005-12-15 14:31:24 -08001081bail:
Mark Fashehccd979b2005-12-15 14:31:24 -08001082 mlog_exit_void();
1083}
1084
Al Viro066d92d2010-06-08 21:28:10 -04001085static void ocfs2_clear_inode(struct inode *inode)
Mark Fashehccd979b2005-12-15 14:31:24 -08001086{
1087 int status;
1088 struct ocfs2_inode_info *oi = OCFS2_I(inode);
1089
1090 mlog_entry_void();
1091
Al Viro066d92d2010-06-08 21:28:10 -04001092 end_writeback(inode);
Mark Fashehb06970532006-03-03 10:24:33 -08001093 mlog(0, "Clearing inode: %llu, nlink = %u\n",
1094 (unsigned long long)OCFS2_I(inode)->ip_blkno, inode->i_nlink);
Mark Fashehccd979b2005-12-15 14:31:24 -08001095
1096 mlog_bug_on_msg(OCFS2_SB(inode->i_sb) == NULL,
1097 "Inode=%lu\n", inode->i_ino);
1098
Christoph Hellwig9f754752010-03-03 09:05:05 -05001099 dquot_drop(inode);
Christoph Hellwig257ba152010-03-03 09:05:04 -05001100
Mark Fasheh34d024f2007-09-24 15:56:19 -07001101 /* To preven remote deletes we hold open lock before, now it
1102 * is time to unlock PR and EX open locks. */
Tiger Yang50008632007-03-20 16:01:38 -07001103 ocfs2_open_unlock(inode);
1104
Mark Fashehccd979b2005-12-15 14:31:24 -08001105 /* Do these before all the other work so that we don't bounce
Mark Fasheh34d024f2007-09-24 15:56:19 -07001106 * the downconvert thread while waiting to destroy the locks. */
Mark Fashehccd979b2005-12-15 14:31:24 -08001107 ocfs2_mark_lockres_freeing(&oi->ip_rw_lockres);
Mark Fashehe63aecb62007-10-18 15:30:42 -07001108 ocfs2_mark_lockres_freeing(&oi->ip_inode_lockres);
Tiger Yang50008632007-03-20 16:01:38 -07001109 ocfs2_mark_lockres_freeing(&oi->ip_open_lockres);
Mark Fashehccd979b2005-12-15 14:31:24 -08001110
Mark Fasheh4fe370a2009-12-07 13:15:40 -08001111 ocfs2_resv_discard(&OCFS2_SB(inode->i_sb)->osb_la_resmap,
1112 &oi->ip_la_data_resv);
1113 ocfs2_resv_init_once(&oi->ip_la_data_resv);
1114
Mark Fashehccd979b2005-12-15 14:31:24 -08001115 /* We very well may get a clear_inode before all an inodes
1116 * metadata has hit disk. Of course, we can't drop any cluster
1117 * locks until the journal has finished with it. The only
1118 * exception here are successfully wiped inodes - their
1119 * metadata can now be considered to be part of the system
1120 * inodes from which it came. */
1121 if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED))
1122 ocfs2_checkpoint_inode(inode);
1123
1124 mlog_bug_on_msg(!list_empty(&oi->ip_io_markers),
Mark Fashehb06970532006-03-03 10:24:33 -08001125 "Clear inode of %llu, inode has io markers\n",
1126 (unsigned long long)oi->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08001127
Mark Fasheh83418972007-04-23 18:53:12 -07001128 ocfs2_extent_map_trunc(inode, 0);
1129
Mark Fashehccd979b2005-12-15 14:31:24 -08001130 status = ocfs2_drop_inode_locks(inode);
1131 if (status < 0)
1132 mlog_errno(status);
1133
1134 ocfs2_lock_res_free(&oi->ip_rw_lockres);
Mark Fashehe63aecb62007-10-18 15:30:42 -07001135 ocfs2_lock_res_free(&oi->ip_inode_lockres);
Tiger Yang50008632007-03-20 16:01:38 -07001136 ocfs2_lock_res_free(&oi->ip_open_lockres);
Mark Fashehccd979b2005-12-15 14:31:24 -08001137
Joel Becker66fb3452009-02-12 15:24:40 -08001138 ocfs2_metadata_cache_exit(INODE_CACHE(inode));
Mark Fashehccd979b2005-12-15 14:31:24 -08001139
Joel Becker8cb471e2009-02-10 20:00:41 -08001140 mlog_bug_on_msg(INODE_CACHE(inode)->ci_num_cached,
Mark Fashehb06970532006-03-03 10:24:33 -08001141 "Clear inode of %llu, inode has %u cache items\n",
Joel Becker8cb471e2009-02-10 20:00:41 -08001142 (unsigned long long)oi->ip_blkno,
1143 INODE_CACHE(inode)->ci_num_cached);
Mark Fashehccd979b2005-12-15 14:31:24 -08001144
Joel Becker8cb471e2009-02-10 20:00:41 -08001145 mlog_bug_on_msg(!(INODE_CACHE(inode)->ci_flags & OCFS2_CACHE_FL_INLINE),
Mark Fashehb06970532006-03-03 10:24:33 -08001146 "Clear inode of %llu, inode has a bad flag\n",
1147 (unsigned long long)oi->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08001148
1149 mlog_bug_on_msg(spin_is_locked(&oi->ip_lock),
Mark Fashehb06970532006-03-03 10:24:33 -08001150 "Clear inode of %llu, inode is locked\n",
1151 (unsigned long long)oi->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08001152
Mark Fasheh251b6ec2006-01-10 15:41:43 -08001153 mlog_bug_on_msg(!mutex_trylock(&oi->ip_io_mutex),
Mark Fashehb06970532006-03-03 10:24:33 -08001154 "Clear inode of %llu, io_mutex is locked\n",
1155 (unsigned long long)oi->ip_blkno);
Mark Fasheh251b6ec2006-01-10 15:41:43 -08001156 mutex_unlock(&oi->ip_io_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -08001157
1158 /*
1159 * down_trylock() returns 0, down_write_trylock() returns 1
1160 * kernel 1, world 0
1161 */
1162 mlog_bug_on_msg(!down_write_trylock(&oi->ip_alloc_sem),
Mark Fashehb06970532006-03-03 10:24:33 -08001163 "Clear inode of %llu, alloc_sem is locked\n",
1164 (unsigned long long)oi->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08001165 up_write(&oi->ip_alloc_sem);
1166
1167 mlog_bug_on_msg(oi->ip_open_count,
Mark Fashehb06970532006-03-03 10:24:33 -08001168 "Clear inode of %llu has open count %d\n",
1169 (unsigned long long)oi->ip_blkno, oi->ip_open_count);
Mark Fashehccd979b2005-12-15 14:31:24 -08001170
1171 /* Clear all other flags. */
Joel Becker47460d62009-02-10 16:05:07 -08001172 oi->ip_flags = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08001173 oi->ip_dir_start_lookup = 0;
1174 oi->ip_blkno = 0ULL;
Sunil Mushranae0dff62008-10-22 13:24:29 -07001175
1176 /*
1177 * ip_jinode is used to track txns against this inode. We ensure that
1178 * the journal is flushed before journal shutdown. Thus it is safe to
1179 * have inodes get cleaned up after journal shutdown.
1180 */
Joel Becker2b4e30f2008-09-03 20:03:41 -07001181 jbd2_journal_release_jbd_inode(OCFS2_SB(inode->i_sb)->journal->j_journal,
1182 &oi->ip_jinode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001183
Mark Fashehccd979b2005-12-15 14:31:24 -08001184 mlog_exit_void();
1185}
1186
Al Viro066d92d2010-06-08 21:28:10 -04001187void ocfs2_evict_inode(struct inode *inode)
1188{
1189 if (!inode->i_nlink ||
1190 (OCFS2_I(inode)->ip_flags & OCFS2_INODE_MAYBE_ORPHANED)) {
1191 ocfs2_delete_inode(inode);
1192 } else {
1193 truncate_inode_pages(&inode->i_data, 0);
1194 }
1195 ocfs2_clear_inode(inode);
1196}
1197
Mark Fashehccd979b2005-12-15 14:31:24 -08001198/* Called under inode_lock, with no more references on the
1199 * struct inode, so it's safe here to check the flags field
1200 * and to manipulate i_nlink without any other locks. */
Al Viro45321ac2010-06-07 13:43:19 -04001201int ocfs2_drop_inode(struct inode *inode)
Mark Fashehccd979b2005-12-15 14:31:24 -08001202{
1203 struct ocfs2_inode_info *oi = OCFS2_I(inode);
Al Viro45321ac2010-06-07 13:43:19 -04001204 int res;
Mark Fashehccd979b2005-12-15 14:31:24 -08001205
1206 mlog_entry_void();
1207
Mark Fashehb06970532006-03-03 10:24:33 -08001208 mlog(0, "Drop inode %llu, nlink = %u, ip_flags = 0x%x\n",
1209 (unsigned long long)oi->ip_blkno, inode->i_nlink, oi->ip_flags);
Mark Fashehccd979b2005-12-15 14:31:24 -08001210
Mark Fasheh379dfe92006-09-08 14:21:03 -07001211 if (oi->ip_flags & OCFS2_INODE_MAYBE_ORPHANED)
Al Viro45321ac2010-06-07 13:43:19 -04001212 res = 1;
Mark Fasheh379dfe92006-09-08 14:21:03 -07001213 else
Al Viro45321ac2010-06-07 13:43:19 -04001214 res = generic_drop_inode(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001215
1216 mlog_exit_void();
Al Viro45321ac2010-06-07 13:43:19 -04001217 return res;
Mark Fashehccd979b2005-12-15 14:31:24 -08001218}
1219
1220/*
Mark Fashehccd979b2005-12-15 14:31:24 -08001221 * This is called from our getattr.
1222 */
1223int ocfs2_inode_revalidate(struct dentry *dentry)
1224{
1225 struct inode *inode = dentry->d_inode;
1226 int status = 0;
1227
Mark Fashehb06970532006-03-03 10:24:33 -08001228 mlog_entry("(inode = 0x%p, ino = %llu)\n", inode,
1229 inode ? (unsigned long long)OCFS2_I(inode)->ip_blkno : 0ULL);
Mark Fashehccd979b2005-12-15 14:31:24 -08001230
1231 if (!inode) {
1232 mlog(0, "eep, no inode!\n");
1233 status = -ENOENT;
1234 goto bail;
1235 }
1236
1237 spin_lock(&OCFS2_I(inode)->ip_lock);
1238 if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED) {
1239 spin_unlock(&OCFS2_I(inode)->ip_lock);
1240 mlog(0, "inode deleted!\n");
1241 status = -ENOENT;
1242 goto bail;
1243 }
1244 spin_unlock(&OCFS2_I(inode)->ip_lock);
1245
Mark Fashehe63aecb62007-10-18 15:30:42 -07001246 /* Let ocfs2_inode_lock do the work of updating our struct
Mark Fashehccd979b2005-12-15 14:31:24 -08001247 * inode for us. */
Mark Fashehe63aecb62007-10-18 15:30:42 -07001248 status = ocfs2_inode_lock(inode, NULL, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -08001249 if (status < 0) {
1250 if (status != -ENOENT)
1251 mlog_errno(status);
1252 goto bail;
1253 }
Mark Fashehe63aecb62007-10-18 15:30:42 -07001254 ocfs2_inode_unlock(inode, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -08001255bail:
1256 mlog_exit(status);
1257
1258 return status;
1259}
1260
1261/*
1262 * Updates a disk inode from a
1263 * struct inode.
1264 * Only takes ip_lock.
1265 */
Mark Fasheh1fabe142006-10-09 18:11:45 -07001266int ocfs2_mark_inode_dirty(handle_t *handle,
Mark Fashehccd979b2005-12-15 14:31:24 -08001267 struct inode *inode,
1268 struct buffer_head *bh)
1269{
1270 int status;
1271 struct ocfs2_dinode *fe = (struct ocfs2_dinode *) bh->b_data;
1272
Mark Fashehb06970532006-03-03 10:24:33 -08001273 mlog_entry("(inode %llu)\n",
1274 (unsigned long long)OCFS2_I(inode)->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08001275
Joel Becker0cf2f762009-02-12 16:41:25 -08001276 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), bh,
Joel Becker13723d02008-10-17 19:25:01 -07001277 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -08001278 if (status < 0) {
1279 mlog_errno(status);
1280 goto leave;
1281 }
1282
1283 spin_lock(&OCFS2_I(inode)->ip_lock);
1284 fe->i_clusters = cpu_to_le32(OCFS2_I(inode)->ip_clusters);
Jan Kara6e4b0d52007-04-27 11:08:01 -07001285 ocfs2_get_inode_flags(OCFS2_I(inode));
Herbert Poetzlca4d1472006-07-03 17:27:12 -07001286 fe->i_attr = cpu_to_le32(OCFS2_I(inode)->ip_attr);
Mark Fasheh15b1e362007-09-07 13:58:15 -07001287 fe->i_dyn_features = cpu_to_le16(OCFS2_I(inode)->ip_dyn_features);
Mark Fashehccd979b2005-12-15 14:31:24 -08001288 spin_unlock(&OCFS2_I(inode)->ip_lock);
1289
1290 fe->i_size = cpu_to_le64(i_size_read(inode));
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001291 ocfs2_set_links_count(fe, inode->i_nlink);
Mark Fashehccd979b2005-12-15 14:31:24 -08001292 fe->i_uid = cpu_to_le32(inode->i_uid);
1293 fe->i_gid = cpu_to_le32(inode->i_gid);
1294 fe->i_mode = cpu_to_le16(inode->i_mode);
1295 fe->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
1296 fe->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
1297 fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
1298 fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
1299 fe->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
1300 fe->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
1301
Joel Beckerec20cec2010-03-19 14:13:52 -07001302 ocfs2_journal_dirty(handle, bh);
Mark Fashehccd979b2005-12-15 14:31:24 -08001303leave:
Mark Fashehccd979b2005-12-15 14:31:24 -08001304 mlog_exit(status);
1305 return status;
1306}
1307
1308/*
1309 *
1310 * Updates a struct inode from a disk inode.
1311 * does no i/o, only takes ip_lock.
1312 */
1313void ocfs2_refresh_inode(struct inode *inode,
1314 struct ocfs2_dinode *fe)
1315{
Mark Fashehccd979b2005-12-15 14:31:24 -08001316 spin_lock(&OCFS2_I(inode)->ip_lock);
1317
1318 OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
Herbert Poetzlca4d1472006-07-03 17:27:12 -07001319 OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr);
Mark Fasheh15b1e362007-09-07 13:58:15 -07001320 OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features);
Herbert Poetzlca4d1472006-07-03 17:27:12 -07001321 ocfs2_set_inode_flags(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001322 i_size_write(inode, le64_to_cpu(fe->i_size));
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001323 inode->i_nlink = ocfs2_read_links_count(fe);
Mark Fashehccd979b2005-12-15 14:31:24 -08001324 inode->i_uid = le32_to_cpu(fe->i_uid);
1325 inode->i_gid = le32_to_cpu(fe->i_gid);
1326 inode->i_mode = le16_to_cpu(fe->i_mode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001327 if (S_ISLNK(inode->i_mode) && le32_to_cpu(fe->i_clusters) == 0)
1328 inode->i_blocks = 0;
1329 else
Mark Fasheh8110b072007-03-22 16:53:23 -07001330 inode->i_blocks = ocfs2_inode_sector_count(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001331 inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime);
1332 inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec);
1333 inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime);
1334 inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec);
1335 inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime);
1336 inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec);
1337
1338 spin_unlock(&OCFS2_I(inode)->ip_lock);
1339}
Joel Beckerb657c952008-11-13 14:49:11 -08001340
1341int ocfs2_validate_inode_block(struct super_block *sb,
1342 struct buffer_head *bh)
1343{
Joel Beckerd6b32bb2008-10-17 14:55:01 -07001344 int rc;
Joel Beckerb657c952008-11-13 14:49:11 -08001345 struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data;
1346
Joel Becker970e4932008-11-13 14:49:19 -08001347 mlog(0, "Validating dinode %llu\n",
1348 (unsigned long long)bh->b_blocknr);
1349
Joel Beckerb657c952008-11-13 14:49:11 -08001350 BUG_ON(!buffer_uptodate(bh));
1351
Joel Beckerd6b32bb2008-10-17 14:55:01 -07001352 /*
1353 * If the ecc fails, we return the error but otherwise
1354 * leave the filesystem running. We know any error is
1355 * local to this block.
1356 */
1357 rc = ocfs2_validate_meta_ecc(sb, bh->b_data, &di->i_check);
Joel Becker13723d02008-10-17 19:25:01 -07001358 if (rc) {
1359 mlog(ML_ERROR, "Checksum failed for dinode %llu\n",
1360 (unsigned long long)bh->b_blocknr);
Joel Beckerd6b32bb2008-10-17 14:55:01 -07001361 goto bail;
Joel Becker13723d02008-10-17 19:25:01 -07001362 }
Joel Beckerd6b32bb2008-10-17 14:55:01 -07001363
1364 /*
1365 * Errors after here are fatal.
1366 */
1367
1368 rc = -EINVAL;
1369
Joel Beckerb657c952008-11-13 14:49:11 -08001370 if (!OCFS2_IS_VALID_DINODE(di)) {
1371 ocfs2_error(sb, "Invalid dinode #%llu: signature = %.*s\n",
1372 (unsigned long long)bh->b_blocknr, 7,
1373 di->i_signature);
1374 goto bail;
1375 }
1376
1377 if (le64_to_cpu(di->i_blkno) != bh->b_blocknr) {
1378 ocfs2_error(sb, "Invalid dinode #%llu: i_blkno is %llu\n",
1379 (unsigned long long)bh->b_blocknr,
1380 (unsigned long long)le64_to_cpu(di->i_blkno));
1381 goto bail;
1382 }
1383
1384 if (!(di->i_flags & cpu_to_le32(OCFS2_VALID_FL))) {
1385 ocfs2_error(sb,
1386 "Invalid dinode #%llu: OCFS2_VALID_FL not set\n",
1387 (unsigned long long)bh->b_blocknr);
1388 goto bail;
1389 }
1390
1391 if (le32_to_cpu(di->i_fs_generation) !=
1392 OCFS2_SB(sb)->fs_generation) {
1393 ocfs2_error(sb,
1394 "Invalid dinode #%llu: fs_generation is %u\n",
1395 (unsigned long long)bh->b_blocknr,
1396 le32_to_cpu(di->i_fs_generation));
1397 goto bail;
1398 }
1399
1400 rc = 0;
1401
1402bail:
1403 return rc;
1404}
1405
1406int ocfs2_read_inode_block_full(struct inode *inode, struct buffer_head **bh,
1407 int flags)
1408{
1409 int rc;
1410 struct buffer_head *tmp = *bh;
1411
Joel Becker8cb471e2009-02-10 20:00:41 -08001412 rc = ocfs2_read_blocks(INODE_CACHE(inode), OCFS2_I(inode)->ip_blkno,
1413 1, &tmp, flags, ocfs2_validate_inode_block);
Joel Beckerb657c952008-11-13 14:49:11 -08001414
1415 /* If ocfs2_read_blocks() got us a new bh, pass it up. */
Joel Becker970e4932008-11-13 14:49:19 -08001416 if (!rc && !*bh)
Joel Beckerb657c952008-11-13 14:49:11 -08001417 *bh = tmp;
1418
Joel Beckerb657c952008-11-13 14:49:11 -08001419 return rc;
1420}
1421
1422int ocfs2_read_inode_block(struct inode *inode, struct buffer_head **bh)
1423{
1424 return ocfs2_read_inode_block_full(inode, bh, 0);
1425}
Joel Becker6e5a3d72009-02-10 19:00:37 -08001426
Joel Becker6e5a3d72009-02-10 19:00:37 -08001427
1428static u64 ocfs2_inode_cache_owner(struct ocfs2_caching_info *ci)
1429{
1430 struct ocfs2_inode_info *oi = cache_info_to_inode(ci);
1431
1432 return oi->ip_blkno;
1433}
1434
Joel Becker8cb471e2009-02-10 20:00:41 -08001435static struct super_block *ocfs2_inode_cache_get_super(struct ocfs2_caching_info *ci)
1436{
1437 struct ocfs2_inode_info *oi = cache_info_to_inode(ci);
1438
1439 return oi->vfs_inode.i_sb;
1440}
1441
Joel Becker6e5a3d72009-02-10 19:00:37 -08001442static void ocfs2_inode_cache_lock(struct ocfs2_caching_info *ci)
1443{
1444 struct ocfs2_inode_info *oi = cache_info_to_inode(ci);
1445
1446 spin_lock(&oi->ip_lock);
1447}
1448
1449static void ocfs2_inode_cache_unlock(struct ocfs2_caching_info *ci)
1450{
1451 struct ocfs2_inode_info *oi = cache_info_to_inode(ci);
1452
1453 spin_unlock(&oi->ip_lock);
1454}
1455
1456static void ocfs2_inode_cache_io_lock(struct ocfs2_caching_info *ci)
1457{
1458 struct ocfs2_inode_info *oi = cache_info_to_inode(ci);
1459
1460 mutex_lock(&oi->ip_io_mutex);
1461}
1462
1463static void ocfs2_inode_cache_io_unlock(struct ocfs2_caching_info *ci)
1464{
1465 struct ocfs2_inode_info *oi = cache_info_to_inode(ci);
1466
1467 mutex_unlock(&oi->ip_io_mutex);
1468}
1469
1470const struct ocfs2_caching_operations ocfs2_inode_caching_ops = {
1471 .co_owner = ocfs2_inode_cache_owner,
Joel Becker8cb471e2009-02-10 20:00:41 -08001472 .co_get_super = ocfs2_inode_cache_get_super,
Joel Becker6e5a3d72009-02-10 19:00:37 -08001473 .co_cache_lock = ocfs2_inode_cache_lock,
1474 .co_cache_unlock = ocfs2_inode_cache_unlock,
1475 .co_io_lock = ocfs2_inode_cache_io_lock,
1476 .co_io_unlock = ocfs2_inode_cache_io_unlock,
1477};
1478