blob: f87f9bd1edffd44830f27c33301e665be5a5ae05 [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
Mark Fashehccd979b2005-12-15 14:31:24 -080034#include <cluster/masklog.h>
35
36#include "ocfs2.h"
37
38#include "alloc.h"
Mark Fasheh9b7895e2008-11-12 16:27:44 -080039#include "dir.h"
Joel Beckerd6b32bb2008-10-17 14:55:01 -070040#include "blockcheck.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080041#include "dlmglue.h"
42#include "extent_map.h"
43#include "file.h"
Mark Fashehb4df6ed2006-02-22 17:35:08 -080044#include "heartbeat.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080045#include "inode.h"
46#include "journal.h"
47#include "namei.h"
48#include "suballoc.h"
49#include "super.h"
50#include "symlink.h"
51#include "sysfile.h"
52#include "uptodate.h"
Tiger Yangcf1d6c72008-08-18 17:11:00 +080053#include "xattr.h"
Tao Ma8b2c0db2009-08-18 11:43:49 +080054#include "refcounttree.h"
Tao Ma64f3b262011-02-22 22:24:57 +080055#include "ocfs2_trace.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
Tao Ma64f3b262011-02-22 22:24:57 +0800134 trace_ocfs2_iget_begin((unsigned long long)blkno, flags,
135 sysfile_type);
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. */
Mark Fashehccd979b2005-12-15 14:31:24 -0800156 if (inode == NULL) {
157 inode = ERR_PTR(-ENOMEM);
158 mlog_errno(PTR_ERR(inode));
159 goto bail;
160 }
Tao Ma64f3b262011-02-22 22:24:57 +0800161 trace_ocfs2_iget5_locked(inode->i_state);
Tao Ma6218b902011-02-21 11:18:30 +0800162 if (inode->i_state & I_NEW) {
Tao Ma6218b902011-02-21 11:18:30 +0800163 ocfs2_read_locked_inode(inode, &args);
164 unlock_new_inode(inode);
165 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800166 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)) {
Tao Ma64f3b262011-02-22 22:24:57 +0800174 trace_ocfs2_iget_end(inode,
175 (unsigned long long)OCFS2_I(inode)->ip_blkno);
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
Mark Fashehccd979b2005-12-15 14:31:24 -0800195 args = opaque;
196
197 mlog_bug_on_msg(!inode, "No inode in find actor!\n");
198
Tao Ma64f3b262011-02-22 22:24:57 +0800199 trace_ocfs2_find_actor(inode, inode->i_ino, opaque, args->fi_blkno);
200
Mark Fashehccd979b2005-12-15 14:31:24 -0800201 if (oi->ip_blkno != args->fi_blkno)
202 goto bail;
203
Mark Fashehccd979b2005-12-15 14:31:24 -0800204 ret = 1;
205bail:
Mark Fashehccd979b2005-12-15 14:31:24 -0800206 return ret;
207}
208
209/*
210 * initialize the new inode, but don't do anything that would cause
211 * us to sleep.
212 * return 0 on success, 1 on failure
213 */
214static int ocfs2_init_locked_inode(struct inode *inode, void *opaque)
215{
216 struct ocfs2_find_inode_args *args = opaque;
Jan Karacb257972009-06-04 15:26:50 +0200217 static struct lock_class_key ocfs2_quota_ip_alloc_sem_key,
218 ocfs2_file_ip_alloc_sem_key;
Mark Fashehccd979b2005-12-15 14:31:24 -0800219
Mark Fashehccd979b2005-12-15 14:31:24 -0800220 inode->i_ino = args->fi_ino;
221 OCFS2_I(inode)->ip_blkno = args->fi_blkno;
Jan Kara5fa06132008-01-11 00:11:45 +0100222 if (args->fi_sysfile_type != 0)
223 lockdep_set_class(&inode->i_mutex,
224 &ocfs2_sysfile_lock_key[args->fi_sysfile_type]);
Jan Karacb257972009-06-04 15:26:50 +0200225 if (args->fi_sysfile_type == USER_QUOTA_SYSTEM_INODE ||
226 args->fi_sysfile_type == GROUP_QUOTA_SYSTEM_INODE ||
227 args->fi_sysfile_type == LOCAL_USER_QUOTA_SYSTEM_INODE ||
228 args->fi_sysfile_type == LOCAL_GROUP_QUOTA_SYSTEM_INODE)
229 lockdep_set_class(&OCFS2_I(inode)->ip_alloc_sem,
230 &ocfs2_quota_ip_alloc_sem_key);
231 else
232 lockdep_set_class(&OCFS2_I(inode)->ip_alloc_sem,
233 &ocfs2_file_ip_alloc_sem_key);
Mark Fashehccd979b2005-12-15 14:31:24 -0800234
Mark Fashehccd979b2005-12-15 14:31:24 -0800235 return 0;
236}
237
Joel Beckerb657c952008-11-13 14:49:11 -0800238void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
239 int create_ino)
Mark Fashehccd979b2005-12-15 14:31:24 -0800240{
241 struct super_block *sb;
242 struct ocfs2_super *osb;
Mark Fasheh53da4932008-07-21 14:29:16 -0700243 int use_plocks = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -0800244
Mark Fashehccd979b2005-12-15 14:31:24 -0800245 sb = inode->i_sb;
246 osb = OCFS2_SB(sb);
247
Mark Fasheh53da4932008-07-21 14:29:16 -0700248 if ((osb->s_mount_opt & OCFS2_MOUNT_LOCALFLOCKS) ||
249 ocfs2_mount_local(osb) || !ocfs2_stack_supports_plocks())
250 use_plocks = 0;
251
Joel Beckerb657c952008-11-13 14:49:11 -0800252 /*
253 * These have all been checked by ocfs2_read_inode_block() or set
254 * by ocfs2_mknod_locked(), so a failure is a code bug.
255 */
256 BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); /* This means that read_inode
257 cannot create a superblock
258 inode today. change if
259 that is needed. */
260 BUG_ON(!(fe->i_flags & cpu_to_le32(OCFS2_VALID_FL)));
261 BUG_ON(le32_to_cpu(fe->i_fs_generation) != osb->fs_generation);
Mark Fashehccd979b2005-12-15 14:31:24 -0800262
Mark Fashehccd979b2005-12-15 14:31:24 -0800263
Mark Fasheh8110b072007-03-22 16:53:23 -0700264 OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
265 OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr);
Mark Fasheh15b1e362007-09-07 13:58:15 -0700266 OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features);
Mark Fasheh8110b072007-03-22 16:53:23 -0700267
Mark Fashehccd979b2005-12-15 14:31:24 -0800268 inode->i_version = 1;
269 inode->i_generation = le32_to_cpu(fe->i_generation);
270 inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev));
271 inode->i_mode = le16_to_cpu(fe->i_mode);
Eric W. Biederman2c034172013-01-31 17:27:11 -0800272 i_uid_write(inode, le32_to_cpu(fe->i_uid));
273 i_gid_write(inode, le32_to_cpu(fe->i_gid));
Mark Fashehccd979b2005-12-15 14:31:24 -0800274
275 /* Fast symlinks will have i_size but no allocated clusters. */
Al Viroea022dfb2012-05-03 10:14:29 -0400276 if (S_ISLNK(inode->i_mode) && !fe->i_clusters) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800277 inode->i_blocks = 0;
Al Viroea022dfb2012-05-03 10:14:29 -0400278 inode->i_mapping->a_ops = &ocfs2_fast_symlink_aops;
279 } else {
Mark Fasheh8110b072007-03-22 16:53:23 -0700280 inode->i_blocks = ocfs2_inode_sector_count(inode);
Al Viroea022dfb2012-05-03 10:14:29 -0400281 inode->i_mapping->a_ops = &ocfs2_aops;
282 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800283 inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime);
284 inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec);
285 inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime);
286 inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec);
287 inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime);
288 inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec);
289
290 if (OCFS2_I(inode)->ip_blkno != le64_to_cpu(fe->i_blkno))
291 mlog(ML_ERROR,
Mark Fashehb06970532006-03-03 10:24:33 -0800292 "ip_blkno %llu != i_blkno %llu!\n",
293 (unsigned long long)OCFS2_I(inode)->ip_blkno,
Mark Fasheh1ca1a112007-04-27 16:01:25 -0700294 (unsigned long long)le64_to_cpu(fe->i_blkno));
Mark Fashehccd979b2005-12-15 14:31:24 -0800295
Miklos Szeredibfe86842011-10-28 14:13:29 +0200296 set_nlink(inode, ocfs2_read_links_count(fe));
Mark Fashehccd979b2005-12-15 14:31:24 -0800297
Tao Ma64f3b262011-02-22 22:24:57 +0800298 trace_ocfs2_populate_inode(OCFS2_I(inode)->ip_blkno,
299 le32_to_cpu(fe->i_flags));
Jan Karabbbd0eb2008-08-21 18:22:30 +0200300 if (fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) {
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700301 OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SYSTEM_FILE;
Jan Karabbbd0eb2008-08-21 18:22:30 +0200302 inode->i_flags |= S_NOQUOTA;
303 }
Tao Ma64f3b262011-02-22 22:24:57 +0800304
Mark Fashehccd979b2005-12-15 14:31:24 -0800305 if (fe->i_flags & cpu_to_le32(OCFS2_LOCAL_ALLOC_FL)) {
306 OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP;
Mark Fashehccd979b2005-12-15 14:31:24 -0800307 } else if (fe->i_flags & cpu_to_le32(OCFS2_BITMAP_FL)) {
308 OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP;
Jan Kara1a224ad2008-08-20 15:43:36 +0200309 } else if (fe->i_flags & cpu_to_le32(OCFS2_QUOTA_FL)) {
310 inode->i_flags |= S_NOQUOTA;
Mark Fashehccd979b2005-12-15 14:31:24 -0800311 } else if (fe->i_flags & cpu_to_le32(OCFS2_SUPER_BLOCK_FL)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800312 /* we can't actually hit this as read_inode can't
313 * handle superblocks today ;-) */
314 BUG();
315 }
316
317 switch (inode->i_mode & S_IFMT) {
318 case S_IFREG:
Mark Fasheh53da4932008-07-21 14:29:16 -0700319 if (use_plocks)
320 inode->i_fop = &ocfs2_fops;
321 else
322 inode->i_fop = &ocfs2_fops_no_plocks;
Mark Fashehccd979b2005-12-15 14:31:24 -0800323 inode->i_op = &ocfs2_file_iops;
324 i_size_write(inode, le64_to_cpu(fe->i_size));
325 break;
326 case S_IFDIR:
327 inode->i_op = &ocfs2_dir_iops;
Mark Fasheh53da4932008-07-21 14:29:16 -0700328 if (use_plocks)
329 inode->i_fop = &ocfs2_dops;
330 else
331 inode->i_fop = &ocfs2_dops_no_plocks;
Mark Fashehccd979b2005-12-15 14:31:24 -0800332 i_size_write(inode, le64_to_cpu(fe->i_size));
Goldwyn Rodrigues5e98d492010-06-28 10:04:32 -0500333 OCFS2_I(inode)->ip_dir_lock_gen = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -0800334 break;
335 case S_IFLNK:
Al Viroea022dfb2012-05-03 10:14:29 -0400336 inode->i_op = &ocfs2_symlink_inode_operations;
Mark Fashehccd979b2005-12-15 14:31:24 -0800337 i_size_write(inode, le64_to_cpu(fe->i_size));
338 break;
339 default:
340 inode->i_op = &ocfs2_special_file_iops;
341 init_special_inode(inode, inode->i_mode,
342 inode->i_rdev);
343 break;
344 }
345
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700346 if (create_ino) {
347 inode->i_ino = ino_from_blkno(inode->i_sb,
348 le64_to_cpu(fe->i_blkno));
349
350 /*
351 * If we ever want to create system files from kernel,
352 * the generation argument to
353 * ocfs2_inode_lock_res_init() will have to change.
354 */
Mark Fasheh1ca1a112007-04-27 16:01:25 -0700355 BUG_ON(le32_to_cpu(fe->i_flags) & OCFS2_SYSTEM_FL);
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700356
Mark Fashehe63aecb62007-10-18 15:30:42 -0700357 ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_inode_lockres,
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700358 OCFS2_LOCK_TYPE_META, 0, inode);
Tiger Yang50008632007-03-20 16:01:38 -0700359
360 ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres,
361 OCFS2_LOCK_TYPE_OPEN, 0, inode);
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700362 }
363
Mark Fashehccd979b2005-12-15 14:31:24 -0800364 ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_rw_lockres,
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700365 OCFS2_LOCK_TYPE_RW, inode->i_generation,
366 inode);
367
Herbert Poetzlca4d1472006-07-03 17:27:12 -0700368 ocfs2_set_inode_flags(inode);
Herbert Poetzlca4d1472006-07-03 17:27:12 -0700369
Tao Ma13821152009-02-25 00:53:23 +0800370 OCFS2_I(inode)->ip_last_used_slot = 0;
371 OCFS2_I(inode)->ip_last_used_group = 0;
Mark Fashehe3b4a972009-12-07 13:16:07 -0800372
373 if (S_ISDIR(inode->i_mode))
374 ocfs2_resv_set_type(&OCFS2_I(inode)->ip_la_data_resv,
375 OCFS2_RESV_FLAG_DIR);
Mark Fashehccd979b2005-12-15 14:31:24 -0800376}
377
378static int ocfs2_read_locked_inode(struct inode *inode,
379 struct ocfs2_find_inode_args *args)
380{
381 struct super_block *sb;
382 struct ocfs2_super *osb;
383 struct ocfs2_dinode *fe;
384 struct buffer_head *bh = NULL;
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700385 int status, can_lock;
386 u32 generation = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -0800387
Mark Fashehccd979b2005-12-15 14:31:24 -0800388 status = -EINVAL;
389 if (inode == NULL || inode->i_sb == NULL) {
390 mlog(ML_ERROR, "bad inode\n");
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700391 return status;
Mark Fashehccd979b2005-12-15 14:31:24 -0800392 }
393 sb = inode->i_sb;
394 osb = OCFS2_SB(sb);
395
396 if (!args) {
397 mlog(ML_ERROR, "bad inode args\n");
398 make_bad_inode(inode);
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700399 return status;
Mark Fashehccd979b2005-12-15 14:31:24 -0800400 }
401
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700402 /*
403 * To improve performance of cold-cache inode stats, we take
404 * the cluster lock here if possible.
405 *
406 * Generally, OCFS2 never trusts the contents of an inode
407 * unless it's holding a cluster lock, so taking it here isn't
408 * a correctness issue as much as it is a performance
409 * improvement.
410 *
411 * There are three times when taking the lock is not a good idea:
412 *
413 * 1) During startup, before we have initialized the DLM.
414 *
415 * 2) If we are reading certain system files which never get
416 * cluster locks (local alloc, truncate log).
417 *
418 * 3) If the process doing the iget() is responsible for
419 * orphan dir recovery. We're holding the orphan dir lock and
420 * can get into a deadlock with another process on another
421 * node in ->delete_inode().
422 *
423 * #1 and #2 can be simply solved by never taking the lock
424 * here for system files (which are the only type we read
425 * during mount). It's a heavier approach, but our main
Uwe Kleine-Königb5950762010-11-01 15:38:34 -0400426 * concern is user-accessible files anyway.
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700427 *
428 * #3 works itself out because we'll eventually take the
429 * cluster lock before trusting anything anyway.
430 */
431 can_lock = !(args->fi_flags & OCFS2_FI_FLAG_SYSFILE)
Tiger Yang50008632007-03-20 16:01:38 -0700432 && !(args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY)
Sunil Mushranc271c5c2006-12-05 17:56:35 -0800433 && !ocfs2_mount_local(osb);
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700434
Tao Ma64f3b262011-02-22 22:24:57 +0800435 trace_ocfs2_read_locked_inode(
436 (unsigned long long)OCFS2_I(inode)->ip_blkno, can_lock);
437
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700438 /*
439 * To maintain backwards compatibility with older versions of
440 * ocfs2-tools, we still store the generation value for system
441 * files. The only ones that actually matter to userspace are
442 * the journals, but it's easier and inexpensive to just flag
443 * all system files similarly.
444 */
445 if (args->fi_flags & OCFS2_FI_FLAG_SYSFILE)
446 generation = osb->fs_generation;
447
Mark Fashehe63aecb62007-10-18 15:30:42 -0700448 ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_inode_lockres,
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700449 OCFS2_LOCK_TYPE_META,
450 generation, inode);
451
Tiger Yang50008632007-03-20 16:01:38 -0700452 ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres,
453 OCFS2_LOCK_TYPE_OPEN,
454 0, inode);
455
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700456 if (can_lock) {
Tiger Yang50008632007-03-20 16:01:38 -0700457 status = ocfs2_open_lock(inode);
458 if (status) {
459 make_bad_inode(inode);
460 mlog_errno(status);
461 return status;
462 }
Mark Fashehe63aecb62007-10-18 15:30:42 -0700463 status = ocfs2_inode_lock(inode, NULL, 0);
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700464 if (status) {
465 make_bad_inode(inode);
466 mlog_errno(status);
467 return status;
468 }
469 }
470
Tiger Yang50008632007-03-20 16:01:38 -0700471 if (args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY) {
472 status = ocfs2_try_open_lock(inode, 0);
473 if (status) {
Sunil Mushran2bd63212010-01-25 16:57:38 -0800474 make_bad_inode(inode);
Tiger Yang50008632007-03-20 16:01:38 -0700475 return status;
476 }
477 }
478
Joel Beckerb657c952008-11-13 14:49:11 -0800479 if (can_lock) {
480 status = ocfs2_read_inode_block_full(inode, &bh,
481 OCFS2_BH_IGNORE_CACHE);
482 } else {
Joel Beckerda1e9092008-10-09 17:20:29 -0700483 status = ocfs2_read_blocks_sync(osb, args->fi_blkno, 1, &bh);
Sunil Mushranf5ce5a02010-08-12 16:24:26 -0700484 /*
485 * If buffer is in jbd, then its checksum may not have been
486 * computed as yet.
487 */
488 if (!status && !buffer_jbd(bh))
Joel Beckerb657c952008-11-13 14:49:11 -0800489 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
Mark Fashehccd979b2005-12-15 14:31:24 -0800529 return status;
530}
531
532void ocfs2_sync_blockdev(struct super_block *sb)
533{
534 sync_blockdev(sb->s_bdev);
535}
536
537static int ocfs2_truncate_for_delete(struct ocfs2_super *osb,
538 struct inode *inode,
539 struct buffer_head *fe_bh)
540{
541 int status = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -0800542 struct ocfs2_dinode *fe;
Mark Fasheh60b11392007-02-16 11:46:50 -0800543 handle_t *handle = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800544
Mark Fashehccd979b2005-12-15 14:31:24 -0800545 fe = (struct ocfs2_dinode *) fe_bh->b_data;
546
Mark Fasheh1afc32b2007-09-07 14:46:51 -0700547 /*
548 * This check will also skip truncate of inodes with inline
549 * data and fast symlinks.
550 */
Mark Fasheh3a0782d2007-01-17 12:53:31 -0800551 if (fe->i_clusters) {
Joel Becker2b4e30f2008-09-03 20:03:41 -0700552 if (ocfs2_should_order_data(inode))
553 ocfs2_begin_ordered_truncate(inode, 0);
554
Mark Fasheh60b11392007-02-16 11:46:50 -0800555 handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
556 if (IS_ERR(handle)) {
557 status = PTR_ERR(handle);
Dan Carpenter0350cb02010-04-22 11:39:29 +0200558 handle = NULL;
Mark Fasheh60b11392007-02-16 11:46:50 -0800559 mlog_errno(status);
560 goto out;
561 }
562
Joel Becker0cf2f762009-02-12 16:41:25 -0800563 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode),
564 fe_bh,
Joel Becker13723d02008-10-17 19:25:01 -0700565 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fasheh60b11392007-02-16 11:46:50 -0800566 if (status < 0) {
567 mlog_errno(status);
568 goto out;
569 }
570
571 i_size_write(inode, 0);
572
573 status = ocfs2_mark_inode_dirty(handle, inode, fe_bh);
574 if (status < 0) {
575 mlog_errno(status);
576 goto out;
577 }
578
579 ocfs2_commit_trans(osb, handle);
580 handle = NULL;
581
Tristan Ye78f94672010-05-11 17:54:42 +0800582 status = ocfs2_commit_truncate(osb, inode, fe_bh);
Mark Fasheh3a0782d2007-01-17 12:53:31 -0800583 if (status < 0) {
584 mlog_errno(status);
585 goto out;
586 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800587 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800588
Mark Fasheh60b11392007-02-16 11:46:50 -0800589out:
590 if (handle)
591 ocfs2_commit_trans(osb, handle);
Mark Fashehccd979b2005-12-15 14:31:24 -0800592 return status;
593}
594
595static int ocfs2_remove_inode(struct inode *inode,
596 struct buffer_head *di_bh,
597 struct inode *orphan_dir_inode,
598 struct buffer_head *orphan_dir_bh)
599{
600 int status;
601 struct inode *inode_alloc_inode = NULL;
602 struct buffer_head *inode_alloc_bh = NULL;
Mark Fasheh1fabe142006-10-09 18:11:45 -0700603 handle_t *handle;
Mark Fashehccd979b2005-12-15 14:31:24 -0800604 struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
605 struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data;
606
607 inode_alloc_inode =
608 ocfs2_get_system_file_inode(osb, INODE_ALLOC_SYSTEM_INODE,
609 le16_to_cpu(di->i_suballoc_slot));
610 if (!inode_alloc_inode) {
611 status = -EEXIST;
612 mlog_errno(status);
613 goto bail;
614 }
615
Jes Sorensen1b1dcc12006-01-09 15:59:24 -0800616 mutex_lock(&inode_alloc_inode->i_mutex);
Mark Fashehe63aecb62007-10-18 15:30:42 -0700617 status = ocfs2_inode_lock(inode_alloc_inode, &inode_alloc_bh, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -0800618 if (status < 0) {
Jes Sorensen1b1dcc12006-01-09 15:59:24 -0800619 mutex_unlock(&inode_alloc_inode->i_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -0800620
621 mlog_errno(status);
622 goto bail;
623 }
624
Jan Karaa90714c2008-10-09 19:38:40 +0200625 handle = ocfs2_start_trans(osb, OCFS2_DELETE_INODE_CREDITS +
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800626 ocfs2_quota_trans_credits(inode->i_sb));
Mark Fashehccd979b2005-12-15 14:31:24 -0800627 if (IS_ERR(handle)) {
628 status = PTR_ERR(handle);
629 mlog_errno(status);
630 goto bail_unlock;
631 }
632
Li Dongyangd4cd1872010-04-22 16:11:19 +0800633 if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)) {
634 status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode,
635 orphan_dir_bh);
636 if (status < 0) {
637 mlog_errno(status);
638 goto bail_commit;
639 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800640 }
641
642 /* set the inodes dtime */
Joel Becker0cf2f762009-02-12 16:41:25 -0800643 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), di_bh,
Joel Becker13723d02008-10-17 19:25:01 -0700644 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -0800645 if (status < 0) {
646 mlog_errno(status);
647 goto bail_commit;
648 }
649
650 di->i_dtime = cpu_to_le64(CURRENT_TIME.tv_sec);
Marcin Slusarz4092d492007-12-25 15:52:59 +0100651 di->i_flags &= cpu_to_le32(~(OCFS2_VALID_FL | OCFS2_ORPHANED_FL));
Joel Beckerec20cec2010-03-19 14:13:52 -0700652 ocfs2_journal_dirty(handle, di_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800653
Joel Becker8cb471e2009-02-10 20:00:41 -0800654 ocfs2_remove_from_cache(INODE_CACHE(inode), di_bh);
Christoph Hellwig63936dd2010-03-03 09:05:01 -0500655 dquot_free_inode(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800656
657 status = ocfs2_free_dinode(handle, inode_alloc_inode,
658 inode_alloc_bh, di);
659 if (status < 0)
660 mlog_errno(status);
661
662bail_commit:
Mark Fasheh02dc1af2006-10-09 16:48:10 -0700663 ocfs2_commit_trans(osb, handle);
Mark Fashehccd979b2005-12-15 14:31:24 -0800664bail_unlock:
Mark Fashehe63aecb62007-10-18 15:30:42 -0700665 ocfs2_inode_unlock(inode_alloc_inode, 1);
Jes Sorensen1b1dcc12006-01-09 15:59:24 -0800666 mutex_unlock(&inode_alloc_inode->i_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -0800667 brelse(inode_alloc_bh);
668bail:
669 iput(inode_alloc_inode);
670
671 return status;
672}
673
Sunil Mushran2bd63212010-01-25 16:57:38 -0800674/*
Mark Fashehb4df6ed2006-02-22 17:35:08 -0800675 * Serialize with orphan dir recovery. If the process doing
676 * recovery on this orphan dir does an iget() with the dir
677 * i_mutex held, we'll deadlock here. Instead we detect this
678 * and exit early - recovery will wipe this inode for us.
679 */
680static int ocfs2_check_orphan_recovery_state(struct ocfs2_super *osb,
681 int slot)
682{
683 int ret = 0;
684
685 spin_lock(&osb->osb_lock);
686 if (ocfs2_node_map_test_bit(osb, &osb->osb_recovering_orphan_dirs, slot)) {
Mark Fashehb4df6ed2006-02-22 17:35:08 -0800687 ret = -EDEADLK;
688 goto out;
689 }
690 /* This signals to the orphan recovery process that it should
691 * wait for us to handle the wipe. */
692 osb->osb_orphan_wipes[slot]++;
693out:
694 spin_unlock(&osb->osb_lock);
Tao Ma64f3b262011-02-22 22:24:57 +0800695 trace_ocfs2_check_orphan_recovery_state(slot, ret);
Mark Fashehb4df6ed2006-02-22 17:35:08 -0800696 return ret;
697}
698
699static void ocfs2_signal_wipe_completion(struct ocfs2_super *osb,
700 int slot)
701{
702 spin_lock(&osb->osb_lock);
703 osb->osb_orphan_wipes[slot]--;
704 spin_unlock(&osb->osb_lock);
705
706 wake_up(&osb->osb_wipe_event);
707}
708
Mark Fashehccd979b2005-12-15 14:31:24 -0800709static int ocfs2_wipe_inode(struct inode *inode,
710 struct buffer_head *di_bh)
711{
Joel Beckerd5776322010-05-03 19:15:49 -0700712 int status, orphaned_slot = -1;
Mark Fashehccd979b2005-12-15 14:31:24 -0800713 struct inode *orphan_dir_inode = NULL;
714 struct buffer_head *orphan_dir_bh = NULL;
715 struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
Li Dongyangd4cd1872010-04-22 16:11:19 +0800716 struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data;
Mark Fashehccd979b2005-12-15 14:31:24 -0800717
Li Dongyangd4cd1872010-04-22 16:11:19 +0800718 if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)) {
719 orphaned_slot = le16_to_cpu(di->i_orphaned_slot);
Mark Fashehb4df6ed2006-02-22 17:35:08 -0800720
Li Dongyangd4cd1872010-04-22 16:11:19 +0800721 status = ocfs2_check_orphan_recovery_state(osb, orphaned_slot);
722 if (status)
723 return status;
Mark Fashehb4df6ed2006-02-22 17:35:08 -0800724
Li Dongyangd4cd1872010-04-22 16:11:19 +0800725 orphan_dir_inode = ocfs2_get_system_file_inode(osb,
726 ORPHAN_DIR_SYSTEM_INODE,
727 orphaned_slot);
728 if (!orphan_dir_inode) {
729 status = -EEXIST;
730 mlog_errno(status);
731 goto bail;
732 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800733
Li Dongyangd4cd1872010-04-22 16:11:19 +0800734 /* Lock the orphan dir. The lock will be held for the entire
735 * delete_inode operation. We do this now to avoid races with
736 * recovery completion on other nodes. */
737 mutex_lock(&orphan_dir_inode->i_mutex);
738 status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
739 if (status < 0) {
740 mutex_unlock(&orphan_dir_inode->i_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -0800741
Li Dongyangd4cd1872010-04-22 16:11:19 +0800742 mlog_errno(status);
743 goto bail;
744 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800745 }
746
747 /* we do this while holding the orphan dir lock because we
Mark Fasheh34d024f2007-09-24 15:56:19 -0700748 * don't want recovery being run from another node to try an
749 * inode delete underneath us -- this will result in two nodes
Mark Fashehccd979b2005-12-15 14:31:24 -0800750 * truncating the same file! */
751 status = ocfs2_truncate_for_delete(osb, inode, di_bh);
752 if (status < 0) {
753 mlog_errno(status);
754 goto bail_unlock_dir;
755 }
756
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800757 /* Remove any dir index tree */
758 if (S_ISDIR(inode->i_mode)) {
759 status = ocfs2_dx_dir_truncate(inode, di_bh);
760 if (status) {
761 mlog_errno(status);
762 goto bail_unlock_dir;
763 }
764 }
765
Tiger Yangcf1d6c72008-08-18 17:11:00 +0800766 /*Free extended attribute resources associated with this inode.*/
767 status = ocfs2_xattr_remove(inode, di_bh);
768 if (status < 0) {
769 mlog_errno(status);
770 goto bail_unlock_dir;
771 }
772
Tao Ma8b2c0db2009-08-18 11:43:49 +0800773 status = ocfs2_remove_refcount_tree(inode, di_bh);
774 if (status < 0) {
775 mlog_errno(status);
776 goto bail_unlock_dir;
777 }
778
Mark Fashehccd979b2005-12-15 14:31:24 -0800779 status = ocfs2_remove_inode(inode, di_bh, orphan_dir_inode,
780 orphan_dir_bh);
781 if (status < 0)
782 mlog_errno(status);
783
784bail_unlock_dir:
Li Dongyangd4cd1872010-04-22 16:11:19 +0800785 if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)
786 return status;
787
Mark Fashehe63aecb62007-10-18 15:30:42 -0700788 ocfs2_inode_unlock(orphan_dir_inode, 1);
Jes Sorensen1b1dcc12006-01-09 15:59:24 -0800789 mutex_unlock(&orphan_dir_inode->i_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -0800790 brelse(orphan_dir_bh);
791bail:
792 iput(orphan_dir_inode);
Mark Fashehb4df6ed2006-02-22 17:35:08 -0800793 ocfs2_signal_wipe_completion(osb, orphaned_slot);
Mark Fashehccd979b2005-12-15 14:31:24 -0800794
795 return status;
796}
797
798/* There is a series of simple checks that should be done before a
Mark Fasheh34d024f2007-09-24 15:56:19 -0700799 * trylock is even considered. Encapsulate those in this function. */
Mark Fashehccd979b2005-12-15 14:31:24 -0800800static int ocfs2_inode_is_valid_to_delete(struct inode *inode)
801{
802 int ret = 0;
803 struct ocfs2_inode_info *oi = OCFS2_I(inode);
804 struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
805
Tao Ma64f3b262011-02-22 22:24:57 +0800806 trace_ocfs2_inode_is_valid_to_delete(current, osb->dc_task,
807 (unsigned long long)oi->ip_blkno,
808 oi->ip_flags);
809
Mark Fashehccd979b2005-12-15 14:31:24 -0800810 /* We shouldn't be getting here for the root directory
811 * inode.. */
812 if (inode == osb->root_inode) {
813 mlog(ML_ERROR, "Skipping delete of root inode.\n");
814 goto bail;
815 }
816
Mark Fasheh34d024f2007-09-24 15:56:19 -0700817 /* If we're coming from downconvert_thread we can't go into our own
Mark Fashehccd979b2005-12-15 14:31:24 -0800818 * voting [hello, deadlock city!], so unforuntately we just
819 * have to skip deleting this guy. That's OK though because
820 * the node who's doing the actual deleting should handle it
821 * anyway. */
Tao Ma64f3b262011-02-22 22:24:57 +0800822 if (current == osb->dc_task)
Mark Fashehccd979b2005-12-15 14:31:24 -0800823 goto bail;
Mark Fashehccd979b2005-12-15 14:31:24 -0800824
825 spin_lock(&oi->ip_lock);
826 /* OCFS2 *never* deletes system files. This should technically
827 * never get here as system file inodes should always have a
828 * positive link count. */
829 if (oi->ip_flags & OCFS2_INODE_SYSTEM_FILE) {
Mark Fashehb06970532006-03-03 10:24:33 -0800830 mlog(ML_ERROR, "Skipping delete of system file %llu\n",
831 (unsigned long long)oi->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -0800832 goto bail_unlock;
833 }
834
Mark Fasheh34d024f2007-09-24 15:56:19 -0700835 /* If we have allowd wipe of this inode for another node, it
836 * will be marked here so we can safely skip it. Recovery will
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300837 * cleanup any inodes we might inadvertently skip here. */
Tao Ma64f3b262011-02-22 22:24:57 +0800838 if (oi->ip_flags & OCFS2_INODE_SKIP_DELETE)
Mark Fashehccd979b2005-12-15 14:31:24 -0800839 goto bail_unlock;
Mark Fashehccd979b2005-12-15 14:31:24 -0800840
841 ret = 1;
842bail_unlock:
843 spin_unlock(&oi->ip_lock);
844bail:
845 return ret;
846}
847
848/* Query the cluster to determine whether we should wipe an inode from
849 * disk or not.
850 *
851 * Requires the inode to have the cluster lock. */
852static int ocfs2_query_inode_wipe(struct inode *inode,
853 struct buffer_head *di_bh,
854 int *wipe)
855{
Tao Ma64f3b262011-02-22 22:24:57 +0800856 int status = 0, reason = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -0800857 struct ocfs2_inode_info *oi = OCFS2_I(inode);
858 struct ocfs2_dinode *di;
859
860 *wipe = 0;
861
Tao Ma64f3b262011-02-22 22:24:57 +0800862 trace_ocfs2_query_inode_wipe_begin((unsigned long long)oi->ip_blkno,
863 inode->i_nlink);
864
Mark Fashehccd979b2005-12-15 14:31:24 -0800865 /* While we were waiting for the cluster lock in
866 * ocfs2_delete_inode, another node might have asked to delete
867 * the inode. Recheck our flags to catch this. */
868 if (!ocfs2_inode_is_valid_to_delete(inode)) {
Tao Ma64f3b262011-02-22 22:24:57 +0800869 reason = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -0800870 goto bail;
871 }
872
873 /* Now that we have an up to date inode, we can double check
874 * the link count. */
Tao Ma64f3b262011-02-22 22:24:57 +0800875 if (inode->i_nlink)
Mark Fashehccd979b2005-12-15 14:31:24 -0800876 goto bail;
Mark Fashehccd979b2005-12-15 14:31:24 -0800877
878 /* Do some basic inode verification... */
879 di = (struct ocfs2_dinode *) di_bh->b_data;
Li Dongyangd4cd1872010-04-22 16:11:19 +0800880 if (!(di->i_flags & cpu_to_le32(OCFS2_ORPHANED_FL)) &&
881 !(oi->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)) {
Tristan Yeb54c2ca2010-03-19 09:21:10 +0800882 /*
883 * Inodes in the orphan dir must have ORPHANED_FL. The only
884 * inodes that come back out of the orphan dir are reflink
885 * targets. A reflink target may be moved out of the orphan
886 * dir between the time we scan the directory and the time we
887 * process it. This would lead to HAS_REFCOUNT_FL being set but
888 * ORPHANED_FL not.
889 */
890 if (di->i_dyn_features & cpu_to_le16(OCFS2_HAS_REFCOUNT_FL)) {
Tao Ma64f3b262011-02-22 22:24:57 +0800891 reason = 2;
Tristan Yeb54c2ca2010-03-19 09:21:10 +0800892 goto bail;
893 }
894
Mark Fashehccd979b2005-12-15 14:31:24 -0800895 /* for lack of a better error? */
896 status = -EEXIST;
897 mlog(ML_ERROR,
Mark Fashehb06970532006-03-03 10:24:33 -0800898 "Inode %llu (on-disk %llu) not orphaned! "
Mark Fashehccd979b2005-12-15 14:31:24 -0800899 "Disk flags 0x%x, inode flags 0x%x\n",
Mark Fashehb06970532006-03-03 10:24:33 -0800900 (unsigned long long)oi->ip_blkno,
Mark Fasheh1ca1a112007-04-27 16:01:25 -0700901 (unsigned long long)le64_to_cpu(di->i_blkno),
902 le32_to_cpu(di->i_flags), oi->ip_flags);
Mark Fashehccd979b2005-12-15 14:31:24 -0800903 goto bail;
904 }
905
906 /* has someone already deleted us?! baaad... */
907 if (di->i_dtime) {
908 status = -EEXIST;
909 mlog_errno(status);
910 goto bail;
911 }
912
Mark Fasheh6f16bf62007-03-20 17:17:54 -0700913 /*
914 * This is how ocfs2 determines whether an inode is still live
915 * within the cluster. Every node takes a shared read lock on
916 * the inode open lock in ocfs2_read_locked_inode(). When we
917 * get to ->delete_inode(), each node tries to convert it's
918 * lock to an exclusive. Trylocks are serialized by the inode
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300919 * meta data lock. If the upconvert succeeds, we know the inode
Mark Fasheh6f16bf62007-03-20 17:17:54 -0700920 * is no longer live and can be deleted.
921 *
922 * Though we call this with the meta data lock held, the
923 * trylock keeps us from ABBA deadlock.
924 */
925 status = ocfs2_try_open_lock(inode, 1);
Tiger Yang50008632007-03-20 16:01:38 -0700926 if (status == -EAGAIN) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800927 status = 0;
Tao Ma64f3b262011-02-22 22:24:57 +0800928 reason = 3;
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;
Tao Ma64f3b262011-02-22 22:24:57 +0800937 trace_ocfs2_query_inode_wipe_succ(le16_to_cpu(di->i_orphaned_slot));
Mark Fashehccd979b2005-12-15 14:31:24 -0800938
939bail:
Tao Ma64f3b262011-02-22 22:24:57 +0800940 trace_ocfs2_query_inode_wipe_end(status, reason);
Mark Fashehccd979b2005-12-15 14:31:24 -0800941 return status;
942}
943
944/* Support function for ocfs2_delete_inode. Will help us keep the
945 * inode data in a consistent state for clear_inode. Always truncates
946 * pages, optionally sync's them first. */
947static void ocfs2_cleanup_delete_inode(struct inode *inode,
948 int sync_data)
949{
Tao Ma64f3b262011-02-22 22:24:57 +0800950 trace_ocfs2_cleanup_delete_inode(
951 (unsigned long long)OCFS2_I(inode)->ip_blkno, sync_data);
Mark Fashehccd979b2005-12-15 14:31:24 -0800952 if (sync_data)
Jan Kara249ec932011-11-08 00:20:39 +0100953 filemap_write_and_wait(inode->i_mapping);
Mark Fashehccd979b2005-12-15 14:31:24 -0800954 truncate_inode_pages(&inode->i_data, 0);
955}
956
Al Viro066d92d2010-06-08 21:28:10 -0400957static void ocfs2_delete_inode(struct inode *inode)
Mark Fashehccd979b2005-12-15 14:31:24 -0800958{
959 int wipe, status;
Joel Beckere4b963f2009-09-02 17:17:36 -0700960 sigset_t oldset;
Mark Fashehccd979b2005-12-15 14:31:24 -0800961 struct buffer_head *di_bh = NULL;
962
Tao Ma64f3b262011-02-22 22:24:57 +0800963 trace_ocfs2_delete_inode(inode->i_ino,
964 (unsigned long long)OCFS2_I(inode)->ip_blkno,
965 is_bad_inode(inode));
Mark Fashehccd979b2005-12-15 14:31:24 -0800966
Jan Karaa90714c2008-10-09 19:38:40 +0200967 /* When we fail in read_inode() we mark inode as bad. The second test
968 * catches the case when inode allocation fails before allocating
969 * a block for inode. */
Tao Ma64f3b262011-02-22 22:24:57 +0800970 if (is_bad_inode(inode) || !OCFS2_I(inode)->ip_blkno)
Mark Fashehccd979b2005-12-15 14:31:24 -0800971 goto bail;
Mark Fashehccd979b2005-12-15 14:31:24 -0800972
Christoph Hellwig871a2932010-03-03 09:05:07 -0500973 dquot_initialize(inode);
Christoph Hellwig907f4552010-03-03 09:05:06 -0500974
Mark Fashehccd979b2005-12-15 14:31:24 -0800975 if (!ocfs2_inode_is_valid_to_delete(inode)) {
976 /* It's probably not necessary to truncate_inode_pages
977 * here but we do it for safety anyway (it will most
978 * likely be a no-op anyway) */
979 ocfs2_cleanup_delete_inode(inode, 0);
980 goto bail;
981 }
982
983 /* We want to block signals in delete_inode as the lock and
984 * messaging paths may return us -ERESTARTSYS. Which would
985 * cause us to exit early, resulting in inodes being orphaned
986 * forever. */
Joel Beckere4b963f2009-09-02 17:17:36 -0700987 ocfs2_block_signals(&oldset);
Mark Fashehccd979b2005-12-15 14:31:24 -0800988
wengang wang6ca497a2009-03-06 21:29:10 +0800989 /*
990 * Synchronize us against ocfs2_get_dentry. We take this in
991 * shared mode so that all nodes can still concurrently
992 * process deletes.
993 */
994 status = ocfs2_nfs_sync_lock(OCFS2_SB(inode->i_sb), 0);
995 if (status < 0) {
996 mlog(ML_ERROR, "getting nfs sync lock(PR) failed %d\n", status);
997 ocfs2_cleanup_delete_inode(inode, 0);
998 goto bail_unblock;
999 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001000 /* Lock down the inode. This gives us an up to date view of
1001 * it's metadata (for verification), and allows us to
Mark Fasheh34d024f2007-09-24 15:56:19 -07001002 * serialize delete_inode on multiple nodes.
Mark Fashehccd979b2005-12-15 14:31:24 -08001003 *
1004 * Even though we might be doing a truncate, we don't take the
1005 * allocation lock here as it won't be needed - nobody will
1006 * have the file open.
1007 */
Mark Fashehe63aecb62007-10-18 15:30:42 -07001008 status = ocfs2_inode_lock(inode, &di_bh, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001009 if (status < 0) {
1010 if (status != -ENOENT)
1011 mlog_errno(status);
1012 ocfs2_cleanup_delete_inode(inode, 0);
wengang wang6ca497a2009-03-06 21:29:10 +08001013 goto bail_unlock_nfs_sync;
Mark Fashehccd979b2005-12-15 14:31:24 -08001014 }
1015
1016 /* Query the cluster. This will be the final decision made
1017 * before we go ahead and wipe the inode. */
1018 status = ocfs2_query_inode_wipe(inode, di_bh, &wipe);
1019 if (!wipe || status < 0) {
Mark Fasheh34d024f2007-09-24 15:56:19 -07001020 /* Error and remote inode busy both mean we won't be
Mark Fashehccd979b2005-12-15 14:31:24 -08001021 * removing the inode, so they take almost the same
1022 * path. */
1023 if (status < 0)
1024 mlog_errno(status);
1025
Mark Fasheh34d024f2007-09-24 15:56:19 -07001026 /* Someone in the cluster has disallowed a wipe of
1027 * this inode, or it was never completely
1028 * orphaned. Write out the pages and exit now. */
Mark Fashehccd979b2005-12-15 14:31:24 -08001029 ocfs2_cleanup_delete_inode(inode, 1);
1030 goto bail_unlock_inode;
1031 }
1032
1033 ocfs2_cleanup_delete_inode(inode, 0);
1034
1035 status = ocfs2_wipe_inode(inode, di_bh);
1036 if (status < 0) {
Mark Fashehb4df6ed2006-02-22 17:35:08 -08001037 if (status != -EDEADLK)
1038 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001039 goto bail_unlock_inode;
1040 }
1041
Mark Fasheh24c19ef2006-09-22 17:28:19 -07001042 /*
1043 * Mark the inode as successfully deleted.
1044 *
1045 * This is important for ocfs2_clear_inode() as it will check
1046 * this flag and skip any checkpointing work
1047 *
1048 * ocfs2_stuff_meta_lvb() also uses this flag to invalidate
1049 * the LVB for other nodes.
1050 */
Mark Fashehccd979b2005-12-15 14:31:24 -08001051 OCFS2_I(inode)->ip_flags |= OCFS2_INODE_DELETED;
1052
1053bail_unlock_inode:
Mark Fashehe63aecb62007-10-18 15:30:42 -07001054 ocfs2_inode_unlock(inode, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001055 brelse(di_bh);
wengang wang6ca497a2009-03-06 21:29:10 +08001056
1057bail_unlock_nfs_sync:
1058 ocfs2_nfs_sync_unlock(OCFS2_SB(inode->i_sb), 0);
1059
Mark Fashehccd979b2005-12-15 14:31:24 -08001060bail_unblock:
Joel Beckere4b963f2009-09-02 17:17:36 -07001061 ocfs2_unblock_signals(&oldset);
Mark Fashehccd979b2005-12-15 14:31:24 -08001062bail:
Tao Mac1e8d352011-03-07 16:43:21 +08001063 return;
Mark Fashehccd979b2005-12-15 14:31:24 -08001064}
1065
Al Viro066d92d2010-06-08 21:28:10 -04001066static void ocfs2_clear_inode(struct inode *inode)
Mark Fashehccd979b2005-12-15 14:31:24 -08001067{
1068 int status;
1069 struct ocfs2_inode_info *oi = OCFS2_I(inode);
1070
Jan Karadbd57682012-05-03 14:48:02 +02001071 clear_inode(inode);
Tao Ma64f3b262011-02-22 22:24:57 +08001072 trace_ocfs2_clear_inode((unsigned long long)oi->ip_blkno,
1073 inode->i_nlink);
Mark Fashehccd979b2005-12-15 14:31:24 -08001074
1075 mlog_bug_on_msg(OCFS2_SB(inode->i_sb) == NULL,
1076 "Inode=%lu\n", inode->i_ino);
1077
Christoph Hellwig9f754752010-03-03 09:05:05 -05001078 dquot_drop(inode);
Christoph Hellwig257ba152010-03-03 09:05:04 -05001079
Mark Fasheh34d024f2007-09-24 15:56:19 -07001080 /* To preven remote deletes we hold open lock before, now it
1081 * is time to unlock PR and EX open locks. */
Tiger Yang50008632007-03-20 16:01:38 -07001082 ocfs2_open_unlock(inode);
1083
Mark Fashehccd979b2005-12-15 14:31:24 -08001084 /* Do these before all the other work so that we don't bounce
Mark Fasheh34d024f2007-09-24 15:56:19 -07001085 * the downconvert thread while waiting to destroy the locks. */
Mark Fashehccd979b2005-12-15 14:31:24 -08001086 ocfs2_mark_lockres_freeing(&oi->ip_rw_lockres);
Mark Fashehe63aecb62007-10-18 15:30:42 -07001087 ocfs2_mark_lockres_freeing(&oi->ip_inode_lockres);
Tiger Yang50008632007-03-20 16:01:38 -07001088 ocfs2_mark_lockres_freeing(&oi->ip_open_lockres);
Mark Fashehccd979b2005-12-15 14:31:24 -08001089
Mark Fasheh4fe370a2009-12-07 13:15:40 -08001090 ocfs2_resv_discard(&OCFS2_SB(inode->i_sb)->osb_la_resmap,
1091 &oi->ip_la_data_resv);
1092 ocfs2_resv_init_once(&oi->ip_la_data_resv);
1093
Mark Fashehccd979b2005-12-15 14:31:24 -08001094 /* We very well may get a clear_inode before all an inodes
1095 * metadata has hit disk. Of course, we can't drop any cluster
1096 * locks until the journal has finished with it. The only
1097 * exception here are successfully wiped inodes - their
1098 * metadata can now be considered to be part of the system
1099 * inodes from which it came. */
1100 if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED))
1101 ocfs2_checkpoint_inode(inode);
1102
1103 mlog_bug_on_msg(!list_empty(&oi->ip_io_markers),
Mark Fashehb06970532006-03-03 10:24:33 -08001104 "Clear inode of %llu, inode has io markers\n",
1105 (unsigned long long)oi->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08001106
Mark Fasheh83418972007-04-23 18:53:12 -07001107 ocfs2_extent_map_trunc(inode, 0);
1108
Mark Fashehccd979b2005-12-15 14:31:24 -08001109 status = ocfs2_drop_inode_locks(inode);
1110 if (status < 0)
1111 mlog_errno(status);
1112
1113 ocfs2_lock_res_free(&oi->ip_rw_lockres);
Mark Fashehe63aecb62007-10-18 15:30:42 -07001114 ocfs2_lock_res_free(&oi->ip_inode_lockres);
Tiger Yang50008632007-03-20 16:01:38 -07001115 ocfs2_lock_res_free(&oi->ip_open_lockres);
Mark Fashehccd979b2005-12-15 14:31:24 -08001116
Joel Becker66fb3452009-02-12 15:24:40 -08001117 ocfs2_metadata_cache_exit(INODE_CACHE(inode));
Mark Fashehccd979b2005-12-15 14:31:24 -08001118
Joel Becker8cb471e2009-02-10 20:00:41 -08001119 mlog_bug_on_msg(INODE_CACHE(inode)->ci_num_cached,
Mark Fashehb06970532006-03-03 10:24:33 -08001120 "Clear inode of %llu, inode has %u cache items\n",
Joel Becker8cb471e2009-02-10 20:00:41 -08001121 (unsigned long long)oi->ip_blkno,
1122 INODE_CACHE(inode)->ci_num_cached);
Mark Fashehccd979b2005-12-15 14:31:24 -08001123
Joel Becker8cb471e2009-02-10 20:00:41 -08001124 mlog_bug_on_msg(!(INODE_CACHE(inode)->ci_flags & OCFS2_CACHE_FL_INLINE),
Mark Fashehb06970532006-03-03 10:24:33 -08001125 "Clear inode of %llu, inode has a bad flag\n",
1126 (unsigned long long)oi->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08001127
1128 mlog_bug_on_msg(spin_is_locked(&oi->ip_lock),
Mark Fashehb06970532006-03-03 10:24:33 -08001129 "Clear inode of %llu, inode is locked\n",
1130 (unsigned long long)oi->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08001131
Mark Fasheh251b6ec2006-01-10 15:41:43 -08001132 mlog_bug_on_msg(!mutex_trylock(&oi->ip_io_mutex),
Mark Fashehb06970532006-03-03 10:24:33 -08001133 "Clear inode of %llu, io_mutex is locked\n",
1134 (unsigned long long)oi->ip_blkno);
Mark Fasheh251b6ec2006-01-10 15:41:43 -08001135 mutex_unlock(&oi->ip_io_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -08001136
1137 /*
1138 * down_trylock() returns 0, down_write_trylock() returns 1
1139 * kernel 1, world 0
1140 */
1141 mlog_bug_on_msg(!down_write_trylock(&oi->ip_alloc_sem),
Mark Fashehb06970532006-03-03 10:24:33 -08001142 "Clear inode of %llu, alloc_sem is locked\n",
1143 (unsigned long long)oi->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08001144 up_write(&oi->ip_alloc_sem);
1145
1146 mlog_bug_on_msg(oi->ip_open_count,
Mark Fashehb06970532006-03-03 10:24:33 -08001147 "Clear inode of %llu has open count %d\n",
1148 (unsigned long long)oi->ip_blkno, oi->ip_open_count);
Mark Fashehccd979b2005-12-15 14:31:24 -08001149
1150 /* Clear all other flags. */
Joel Becker47460d62009-02-10 16:05:07 -08001151 oi->ip_flags = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08001152 oi->ip_dir_start_lookup = 0;
1153 oi->ip_blkno = 0ULL;
Sunil Mushranae0dff62008-10-22 13:24:29 -07001154
1155 /*
1156 * ip_jinode is used to track txns against this inode. We ensure that
1157 * the journal is flushed before journal shutdown. Thus it is safe to
1158 * have inodes get cleaned up after journal shutdown.
1159 */
Joel Becker2b4e30f2008-09-03 20:03:41 -07001160 jbd2_journal_release_jbd_inode(OCFS2_SB(inode->i_sb)->journal->j_journal,
1161 &oi->ip_jinode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001162}
1163
Al Viro066d92d2010-06-08 21:28:10 -04001164void ocfs2_evict_inode(struct inode *inode)
1165{
1166 if (!inode->i_nlink ||
1167 (OCFS2_I(inode)->ip_flags & OCFS2_INODE_MAYBE_ORPHANED)) {
1168 ocfs2_delete_inode(inode);
1169 } else {
1170 truncate_inode_pages(&inode->i_data, 0);
1171 }
1172 ocfs2_clear_inode(inode);
1173}
1174
Mark Fashehccd979b2005-12-15 14:31:24 -08001175/* Called under inode_lock, with no more references on the
1176 * struct inode, so it's safe here to check the flags field
1177 * and to manipulate i_nlink without any other locks. */
Al Viro45321ac2010-06-07 13:43:19 -04001178int ocfs2_drop_inode(struct inode *inode)
Mark Fashehccd979b2005-12-15 14:31:24 -08001179{
1180 struct ocfs2_inode_info *oi = OCFS2_I(inode);
Al Viro45321ac2010-06-07 13:43:19 -04001181 int res;
Mark Fashehccd979b2005-12-15 14:31:24 -08001182
Tao Ma64f3b262011-02-22 22:24:57 +08001183 trace_ocfs2_drop_inode((unsigned long long)oi->ip_blkno,
1184 inode->i_nlink, oi->ip_flags);
Mark Fashehccd979b2005-12-15 14:31:24 -08001185
Mark Fasheh379dfe92006-09-08 14:21:03 -07001186 if (oi->ip_flags & OCFS2_INODE_MAYBE_ORPHANED)
Al Viro45321ac2010-06-07 13:43:19 -04001187 res = 1;
Mark Fasheh379dfe92006-09-08 14:21:03 -07001188 else
Al Viro45321ac2010-06-07 13:43:19 -04001189 res = generic_drop_inode(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001190
Al Viro45321ac2010-06-07 13:43:19 -04001191 return res;
Mark Fashehccd979b2005-12-15 14:31:24 -08001192}
1193
1194/*
Mark Fashehccd979b2005-12-15 14:31:24 -08001195 * This is called from our getattr.
1196 */
1197int ocfs2_inode_revalidate(struct dentry *dentry)
1198{
1199 struct inode *inode = dentry->d_inode;
1200 int status = 0;
1201
Tao Ma64f3b262011-02-22 22:24:57 +08001202 trace_ocfs2_inode_revalidate(inode,
1203 inode ? (unsigned long long)OCFS2_I(inode)->ip_blkno : 0ULL,
1204 inode ? (unsigned long long)OCFS2_I(inode)->ip_flags : 0);
Mark Fashehccd979b2005-12-15 14:31:24 -08001205
1206 if (!inode) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001207 status = -ENOENT;
1208 goto bail;
1209 }
1210
1211 spin_lock(&OCFS2_I(inode)->ip_lock);
1212 if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED) {
1213 spin_unlock(&OCFS2_I(inode)->ip_lock);
Mark Fashehccd979b2005-12-15 14:31:24 -08001214 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:
Mark Fashehccd979b2005-12-15 14:31:24 -08001229 return status;
1230}
1231
1232/*
1233 * Updates a disk inode from a
1234 * struct inode.
1235 * Only takes ip_lock.
1236 */
Mark Fasheh1fabe142006-10-09 18:11:45 -07001237int ocfs2_mark_inode_dirty(handle_t *handle,
Mark Fashehccd979b2005-12-15 14:31:24 -08001238 struct inode *inode,
1239 struct buffer_head *bh)
1240{
1241 int status;
1242 struct ocfs2_dinode *fe = (struct ocfs2_dinode *) bh->b_data;
1243
Tao Ma64f3b262011-02-22 22:24:57 +08001244 trace_ocfs2_mark_inode_dirty((unsigned long long)OCFS2_I(inode)->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08001245
Joel Becker0cf2f762009-02-12 16:41:25 -08001246 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), bh,
Joel Becker13723d02008-10-17 19:25:01 -07001247 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -08001248 if (status < 0) {
1249 mlog_errno(status);
1250 goto leave;
1251 }
1252
1253 spin_lock(&OCFS2_I(inode)->ip_lock);
1254 fe->i_clusters = cpu_to_le32(OCFS2_I(inode)->ip_clusters);
Jan Kara6e4b0d52007-04-27 11:08:01 -07001255 ocfs2_get_inode_flags(OCFS2_I(inode));
Herbert Poetzlca4d1472006-07-03 17:27:12 -07001256 fe->i_attr = cpu_to_le32(OCFS2_I(inode)->ip_attr);
Mark Fasheh15b1e362007-09-07 13:58:15 -07001257 fe->i_dyn_features = cpu_to_le16(OCFS2_I(inode)->ip_dyn_features);
Mark Fashehccd979b2005-12-15 14:31:24 -08001258 spin_unlock(&OCFS2_I(inode)->ip_lock);
1259
1260 fe->i_size = cpu_to_le64(i_size_read(inode));
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001261 ocfs2_set_links_count(fe, inode->i_nlink);
Eric W. Biederman2c034172013-01-31 17:27:11 -08001262 fe->i_uid = cpu_to_le32(i_uid_read(inode));
1263 fe->i_gid = cpu_to_le32(i_gid_read(inode));
Mark Fashehccd979b2005-12-15 14:31:24 -08001264 fe->i_mode = cpu_to_le16(inode->i_mode);
1265 fe->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
1266 fe->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
1267 fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
1268 fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
1269 fe->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
1270 fe->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
1271
Joel Beckerec20cec2010-03-19 14:13:52 -07001272 ocfs2_journal_dirty(handle, bh);
Mark Fashehccd979b2005-12-15 14:31:24 -08001273leave:
Mark Fashehccd979b2005-12-15 14:31:24 -08001274 return status;
1275}
1276
1277/*
1278 *
1279 * Updates a struct inode from a disk inode.
1280 * does no i/o, only takes ip_lock.
1281 */
1282void ocfs2_refresh_inode(struct inode *inode,
1283 struct ocfs2_dinode *fe)
1284{
Mark Fashehccd979b2005-12-15 14:31:24 -08001285 spin_lock(&OCFS2_I(inode)->ip_lock);
1286
1287 OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
Herbert Poetzlca4d1472006-07-03 17:27:12 -07001288 OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr);
Mark Fasheh15b1e362007-09-07 13:58:15 -07001289 OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features);
Herbert Poetzlca4d1472006-07-03 17:27:12 -07001290 ocfs2_set_inode_flags(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001291 i_size_write(inode, le64_to_cpu(fe->i_size));
Miklos Szeredibfe86842011-10-28 14:13:29 +02001292 set_nlink(inode, ocfs2_read_links_count(fe));
Eric W. Biederman2c034172013-01-31 17:27:11 -08001293 i_uid_write(inode, le32_to_cpu(fe->i_uid));
1294 i_gid_write(inode, le32_to_cpu(fe->i_gid));
Mark Fashehccd979b2005-12-15 14:31:24 -08001295 inode->i_mode = le16_to_cpu(fe->i_mode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001296 if (S_ISLNK(inode->i_mode) && le32_to_cpu(fe->i_clusters) == 0)
1297 inode->i_blocks = 0;
1298 else
Mark Fasheh8110b072007-03-22 16:53:23 -07001299 inode->i_blocks = ocfs2_inode_sector_count(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001300 inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime);
1301 inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec);
1302 inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime);
1303 inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec);
1304 inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime);
1305 inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec);
1306
1307 spin_unlock(&OCFS2_I(inode)->ip_lock);
1308}
Joel Beckerb657c952008-11-13 14:49:11 -08001309
1310int ocfs2_validate_inode_block(struct super_block *sb,
1311 struct buffer_head *bh)
1312{
Joel Beckerd6b32bb2008-10-17 14:55:01 -07001313 int rc;
Joel Beckerb657c952008-11-13 14:49:11 -08001314 struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data;
1315
Tao Ma64f3b262011-02-22 22:24:57 +08001316 trace_ocfs2_validate_inode_block((unsigned long long)bh->b_blocknr);
Joel Becker970e4932008-11-13 14:49:19 -08001317
Joel Beckerb657c952008-11-13 14:49:11 -08001318 BUG_ON(!buffer_uptodate(bh));
1319
Joel Beckerd6b32bb2008-10-17 14:55:01 -07001320 /*
1321 * If the ecc fails, we return the error but otherwise
1322 * leave the filesystem running. We know any error is
1323 * local to this block.
1324 */
1325 rc = ocfs2_validate_meta_ecc(sb, bh->b_data, &di->i_check);
Joel Becker13723d02008-10-17 19:25:01 -07001326 if (rc) {
1327 mlog(ML_ERROR, "Checksum failed for dinode %llu\n",
1328 (unsigned long long)bh->b_blocknr);
Joel Beckerd6b32bb2008-10-17 14:55:01 -07001329 goto bail;
Joel Becker13723d02008-10-17 19:25:01 -07001330 }
Joel Beckerd6b32bb2008-10-17 14:55:01 -07001331
1332 /*
1333 * Errors after here are fatal.
1334 */
1335
1336 rc = -EINVAL;
1337
Joel Beckerb657c952008-11-13 14:49:11 -08001338 if (!OCFS2_IS_VALID_DINODE(di)) {
1339 ocfs2_error(sb, "Invalid dinode #%llu: signature = %.*s\n",
1340 (unsigned long long)bh->b_blocknr, 7,
1341 di->i_signature);
1342 goto bail;
1343 }
1344
1345 if (le64_to_cpu(di->i_blkno) != bh->b_blocknr) {
1346 ocfs2_error(sb, "Invalid dinode #%llu: i_blkno is %llu\n",
1347 (unsigned long long)bh->b_blocknr,
1348 (unsigned long long)le64_to_cpu(di->i_blkno));
1349 goto bail;
1350 }
1351
1352 if (!(di->i_flags & cpu_to_le32(OCFS2_VALID_FL))) {
1353 ocfs2_error(sb,
1354 "Invalid dinode #%llu: OCFS2_VALID_FL not set\n",
1355 (unsigned long long)bh->b_blocknr);
1356 goto bail;
1357 }
1358
1359 if (le32_to_cpu(di->i_fs_generation) !=
1360 OCFS2_SB(sb)->fs_generation) {
1361 ocfs2_error(sb,
1362 "Invalid dinode #%llu: fs_generation is %u\n",
1363 (unsigned long long)bh->b_blocknr,
1364 le32_to_cpu(di->i_fs_generation));
1365 goto bail;
1366 }
1367
1368 rc = 0;
1369
1370bail:
1371 return rc;
1372}
1373
1374int ocfs2_read_inode_block_full(struct inode *inode, struct buffer_head **bh,
1375 int flags)
1376{
1377 int rc;
1378 struct buffer_head *tmp = *bh;
1379
Joel Becker8cb471e2009-02-10 20:00:41 -08001380 rc = ocfs2_read_blocks(INODE_CACHE(inode), OCFS2_I(inode)->ip_blkno,
1381 1, &tmp, flags, ocfs2_validate_inode_block);
Joel Beckerb657c952008-11-13 14:49:11 -08001382
1383 /* If ocfs2_read_blocks() got us a new bh, pass it up. */
Joel Becker970e4932008-11-13 14:49:19 -08001384 if (!rc && !*bh)
Joel Beckerb657c952008-11-13 14:49:11 -08001385 *bh = tmp;
1386
Joel Beckerb657c952008-11-13 14:49:11 -08001387 return rc;
1388}
1389
1390int ocfs2_read_inode_block(struct inode *inode, struct buffer_head **bh)
1391{
1392 return ocfs2_read_inode_block_full(inode, bh, 0);
1393}
Joel Becker6e5a3d72009-02-10 19:00:37 -08001394
Joel Becker6e5a3d72009-02-10 19:00:37 -08001395
1396static u64 ocfs2_inode_cache_owner(struct ocfs2_caching_info *ci)
1397{
1398 struct ocfs2_inode_info *oi = cache_info_to_inode(ci);
1399
1400 return oi->ip_blkno;
1401}
1402
Joel Becker8cb471e2009-02-10 20:00:41 -08001403static struct super_block *ocfs2_inode_cache_get_super(struct ocfs2_caching_info *ci)
1404{
1405 struct ocfs2_inode_info *oi = cache_info_to_inode(ci);
1406
1407 return oi->vfs_inode.i_sb;
1408}
1409
Joel Becker6e5a3d72009-02-10 19:00:37 -08001410static void ocfs2_inode_cache_lock(struct ocfs2_caching_info *ci)
1411{
1412 struct ocfs2_inode_info *oi = cache_info_to_inode(ci);
1413
1414 spin_lock(&oi->ip_lock);
1415}
1416
1417static void ocfs2_inode_cache_unlock(struct ocfs2_caching_info *ci)
1418{
1419 struct ocfs2_inode_info *oi = cache_info_to_inode(ci);
1420
1421 spin_unlock(&oi->ip_lock);
1422}
1423
1424static void ocfs2_inode_cache_io_lock(struct ocfs2_caching_info *ci)
1425{
1426 struct ocfs2_inode_info *oi = cache_info_to_inode(ci);
1427
1428 mutex_lock(&oi->ip_io_mutex);
1429}
1430
1431static void ocfs2_inode_cache_io_unlock(struct ocfs2_caching_info *ci)
1432{
1433 struct ocfs2_inode_info *oi = cache_info_to_inode(ci);
1434
1435 mutex_unlock(&oi->ip_io_mutex);
1436}
1437
1438const struct ocfs2_caching_operations ocfs2_inode_caching_ops = {
1439 .co_owner = ocfs2_inode_cache_owner,
Joel Becker8cb471e2009-02-10 20:00:41 -08001440 .co_get_super = ocfs2_inode_cache_get_super,
Joel Becker6e5a3d72009-02-10 19:00:37 -08001441 .co_cache_lock = ocfs2_inode_cache_lock,
1442 .co_cache_unlock = ocfs2_inode_cache_unlock,
1443 .co_io_lock = ocfs2_inode_cache_io_lock,
1444 .co_io_unlock = ocfs2_inode_cache_io_unlock,
1445};
1446