blob: 8f87e05ee25d3824524c7f6e040a5f43d87c723d [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;
Darrick J. Wong2931cdc2014-04-03 14:46:48 -0700133 journal_t *journal = OCFS2_SB(sb)->journal->j_journal;
Mark Fashehccd979b2005-12-15 14:31:24 -0800134
Tao Ma64f3b262011-02-22 22:24:57 +0800135 trace_ocfs2_iget_begin((unsigned long long)blkno, flags,
136 sysfile_type);
Mark Fashehccd979b2005-12-15 14:31:24 -0800137
138 /* Ok. By now we've either got the offsets passed to us by the
139 * caller, or we just pulled them off the bh. Lets do some
140 * sanity checks to make sure they're OK. */
141 if (blkno == 0) {
142 inode = ERR_PTR(-EINVAL);
143 mlog_errno(PTR_ERR(inode));
144 goto bail;
145 }
146
147 args.fi_blkno = blkno;
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700148 args.fi_flags = flags;
Mark Fashehccd979b2005-12-15 14:31:24 -0800149 args.fi_ino = ino_from_blkno(sb, blkno);
Jan Kara5fa06132008-01-11 00:11:45 +0100150 args.fi_sysfile_type = sysfile_type;
Mark Fashehccd979b2005-12-15 14:31:24 -0800151
152 inode = iget5_locked(sb, args.fi_ino, ocfs2_find_actor,
153 ocfs2_init_locked_inode, &args);
154 /* inode was *not* in the inode cache. 2.6.x requires
155 * us to do our own read_inode call and unlock it
156 * afterwards. */
Mark Fashehccd979b2005-12-15 14:31:24 -0800157 if (inode == NULL) {
158 inode = ERR_PTR(-ENOMEM);
159 mlog_errno(PTR_ERR(inode));
160 goto bail;
161 }
Tao Ma64f3b262011-02-22 22:24:57 +0800162 trace_ocfs2_iget5_locked(inode->i_state);
Tao Ma6218b902011-02-21 11:18:30 +0800163 if (inode->i_state & I_NEW) {
Tao Ma6218b902011-02-21 11:18:30 +0800164 ocfs2_read_locked_inode(inode, &args);
165 unlock_new_inode(inode);
166 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800167 if (is_bad_inode(inode)) {
168 iput(inode);
169 inode = ERR_PTR(-ESTALE);
Mark Fashehccd979b2005-12-15 14:31:24 -0800170 goto bail;
171 }
172
Darrick J. Wong2931cdc2014-04-03 14:46:48 -0700173 /*
174 * Set transaction id's of transactions that have to be committed
175 * to finish f[data]sync. We set them to currently running transaction
176 * as we cannot be sure that the inode or some of its metadata isn't
177 * part of the transaction - the inode could have been reclaimed and
178 * now it is reread from disk.
179 */
180 if (journal) {
181 transaction_t *transaction;
182 tid_t tid;
183 struct ocfs2_inode_info *oi = OCFS2_I(inode);
184
185 read_lock(&journal->j_state_lock);
186 if (journal->j_running_transaction)
187 transaction = journal->j_running_transaction;
188 else
189 transaction = journal->j_committing_transaction;
190 if (transaction)
191 tid = transaction->t_tid;
192 else
193 tid = journal->j_commit_sequence;
194 read_unlock(&journal->j_state_lock);
195 oi->i_sync_tid = tid;
196 oi->i_datasync_tid = tid;
197 }
198
Mark Fashehccd979b2005-12-15 14:31:24 -0800199bail:
200 if (!IS_ERR(inode)) {
Tao Ma64f3b262011-02-22 22:24:57 +0800201 trace_ocfs2_iget_end(inode,
202 (unsigned long long)OCFS2_I(inode)->ip_blkno);
Mark Fasheh6a1bd4a2007-01-03 17:06:59 -0800203 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800204
205 return inode;
206}
207
208
209/*
210 * here's how inodes get read from disk:
211 * iget5_locked -> find_actor -> OCFS2_FIND_ACTOR
212 * found? : return the in-memory inode
213 * not found? : get_new_inode -> OCFS2_INIT_LOCKED_INODE
214 */
215
216static int ocfs2_find_actor(struct inode *inode, void *opaque)
217{
218 struct ocfs2_find_inode_args *args = NULL;
219 struct ocfs2_inode_info *oi = OCFS2_I(inode);
220 int ret = 0;
221
Mark Fashehccd979b2005-12-15 14:31:24 -0800222 args = opaque;
223
224 mlog_bug_on_msg(!inode, "No inode in find actor!\n");
225
Tao Ma64f3b262011-02-22 22:24:57 +0800226 trace_ocfs2_find_actor(inode, inode->i_ino, opaque, args->fi_blkno);
227
Mark Fashehccd979b2005-12-15 14:31:24 -0800228 if (oi->ip_blkno != args->fi_blkno)
229 goto bail;
230
Mark Fashehccd979b2005-12-15 14:31:24 -0800231 ret = 1;
232bail:
Mark Fashehccd979b2005-12-15 14:31:24 -0800233 return ret;
234}
235
236/*
237 * initialize the new inode, but don't do anything that would cause
238 * us to sleep.
239 * return 0 on success, 1 on failure
240 */
241static int ocfs2_init_locked_inode(struct inode *inode, void *opaque)
242{
243 struct ocfs2_find_inode_args *args = opaque;
Jan Karacb257972009-06-04 15:26:50 +0200244 static struct lock_class_key ocfs2_quota_ip_alloc_sem_key,
245 ocfs2_file_ip_alloc_sem_key;
Mark Fashehccd979b2005-12-15 14:31:24 -0800246
Mark Fashehccd979b2005-12-15 14:31:24 -0800247 inode->i_ino = args->fi_ino;
248 OCFS2_I(inode)->ip_blkno = args->fi_blkno;
Jan Kara5fa06132008-01-11 00:11:45 +0100249 if (args->fi_sysfile_type != 0)
250 lockdep_set_class(&inode->i_mutex,
251 &ocfs2_sysfile_lock_key[args->fi_sysfile_type]);
Jan Karacb257972009-06-04 15:26:50 +0200252 if (args->fi_sysfile_type == USER_QUOTA_SYSTEM_INODE ||
253 args->fi_sysfile_type == GROUP_QUOTA_SYSTEM_INODE ||
254 args->fi_sysfile_type == LOCAL_USER_QUOTA_SYSTEM_INODE ||
255 args->fi_sysfile_type == LOCAL_GROUP_QUOTA_SYSTEM_INODE)
256 lockdep_set_class(&OCFS2_I(inode)->ip_alloc_sem,
257 &ocfs2_quota_ip_alloc_sem_key);
258 else
259 lockdep_set_class(&OCFS2_I(inode)->ip_alloc_sem,
260 &ocfs2_file_ip_alloc_sem_key);
Mark Fashehccd979b2005-12-15 14:31:24 -0800261
Mark Fashehccd979b2005-12-15 14:31:24 -0800262 return 0;
263}
264
Joel Beckerb657c952008-11-13 14:49:11 -0800265void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
266 int create_ino)
Mark Fashehccd979b2005-12-15 14:31:24 -0800267{
268 struct super_block *sb;
269 struct ocfs2_super *osb;
Mark Fasheh53da4932008-07-21 14:29:16 -0700270 int use_plocks = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -0800271
Mark Fashehccd979b2005-12-15 14:31:24 -0800272 sb = inode->i_sb;
273 osb = OCFS2_SB(sb);
274
Mark Fasheh53da4932008-07-21 14:29:16 -0700275 if ((osb->s_mount_opt & OCFS2_MOUNT_LOCALFLOCKS) ||
276 ocfs2_mount_local(osb) || !ocfs2_stack_supports_plocks())
277 use_plocks = 0;
278
Joel Beckerb657c952008-11-13 14:49:11 -0800279 /*
280 * These have all been checked by ocfs2_read_inode_block() or set
281 * by ocfs2_mknod_locked(), so a failure is a code bug.
282 */
283 BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); /* This means that read_inode
284 cannot create a superblock
285 inode today. change if
286 that is needed. */
287 BUG_ON(!(fe->i_flags & cpu_to_le32(OCFS2_VALID_FL)));
288 BUG_ON(le32_to_cpu(fe->i_fs_generation) != osb->fs_generation);
Mark Fashehccd979b2005-12-15 14:31:24 -0800289
Mark Fashehccd979b2005-12-15 14:31:24 -0800290
Mark Fasheh8110b072007-03-22 16:53:23 -0700291 OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
292 OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr);
Mark Fasheh15b1e362007-09-07 13:58:15 -0700293 OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features);
Mark Fasheh8110b072007-03-22 16:53:23 -0700294
Mark Fashehccd979b2005-12-15 14:31:24 -0800295 inode->i_version = 1;
296 inode->i_generation = le32_to_cpu(fe->i_generation);
297 inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev));
298 inode->i_mode = le16_to_cpu(fe->i_mode);
Eric W. Biederman2c034172013-01-31 17:27:11 -0800299 i_uid_write(inode, le32_to_cpu(fe->i_uid));
300 i_gid_write(inode, le32_to_cpu(fe->i_gid));
Mark Fashehccd979b2005-12-15 14:31:24 -0800301
302 /* Fast symlinks will have i_size but no allocated clusters. */
Al Viroea022dfb2012-05-03 10:14:29 -0400303 if (S_ISLNK(inode->i_mode) && !fe->i_clusters) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800304 inode->i_blocks = 0;
Al Viroea022dfb2012-05-03 10:14:29 -0400305 inode->i_mapping->a_ops = &ocfs2_fast_symlink_aops;
306 } else {
Mark Fasheh8110b072007-03-22 16:53:23 -0700307 inode->i_blocks = ocfs2_inode_sector_count(inode);
Al Viroea022dfb2012-05-03 10:14:29 -0400308 inode->i_mapping->a_ops = &ocfs2_aops;
309 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800310 inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime);
311 inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec);
312 inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime);
313 inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec);
314 inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime);
315 inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec);
316
317 if (OCFS2_I(inode)->ip_blkno != le64_to_cpu(fe->i_blkno))
318 mlog(ML_ERROR,
Mark Fashehb06970532006-03-03 10:24:33 -0800319 "ip_blkno %llu != i_blkno %llu!\n",
320 (unsigned long long)OCFS2_I(inode)->ip_blkno,
Mark Fasheh1ca1a112007-04-27 16:01:25 -0700321 (unsigned long long)le64_to_cpu(fe->i_blkno));
Mark Fashehccd979b2005-12-15 14:31:24 -0800322
Miklos Szeredibfe86842011-10-28 14:13:29 +0200323 set_nlink(inode, ocfs2_read_links_count(fe));
Mark Fashehccd979b2005-12-15 14:31:24 -0800324
Tao Ma64f3b262011-02-22 22:24:57 +0800325 trace_ocfs2_populate_inode(OCFS2_I(inode)->ip_blkno,
326 le32_to_cpu(fe->i_flags));
Jan Karabbbd0eb2008-08-21 18:22:30 +0200327 if (fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) {
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700328 OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SYSTEM_FILE;
Jan Karabbbd0eb2008-08-21 18:22:30 +0200329 inode->i_flags |= S_NOQUOTA;
330 }
Tao Ma64f3b262011-02-22 22:24:57 +0800331
Mark Fashehccd979b2005-12-15 14:31:24 -0800332 if (fe->i_flags & cpu_to_le32(OCFS2_LOCAL_ALLOC_FL)) {
333 OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP;
Mark Fashehccd979b2005-12-15 14:31:24 -0800334 } else if (fe->i_flags & cpu_to_le32(OCFS2_BITMAP_FL)) {
335 OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP;
Jan Kara1a224ad2008-08-20 15:43:36 +0200336 } else if (fe->i_flags & cpu_to_le32(OCFS2_QUOTA_FL)) {
337 inode->i_flags |= S_NOQUOTA;
Mark Fashehccd979b2005-12-15 14:31:24 -0800338 } else if (fe->i_flags & cpu_to_le32(OCFS2_SUPER_BLOCK_FL)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800339 /* we can't actually hit this as read_inode can't
340 * handle superblocks today ;-) */
341 BUG();
342 }
343
344 switch (inode->i_mode & S_IFMT) {
345 case S_IFREG:
Mark Fasheh53da4932008-07-21 14:29:16 -0700346 if (use_plocks)
347 inode->i_fop = &ocfs2_fops;
348 else
349 inode->i_fop = &ocfs2_fops_no_plocks;
Mark Fashehccd979b2005-12-15 14:31:24 -0800350 inode->i_op = &ocfs2_file_iops;
351 i_size_write(inode, le64_to_cpu(fe->i_size));
352 break;
353 case S_IFDIR:
354 inode->i_op = &ocfs2_dir_iops;
Mark Fasheh53da4932008-07-21 14:29:16 -0700355 if (use_plocks)
356 inode->i_fop = &ocfs2_dops;
357 else
358 inode->i_fop = &ocfs2_dops_no_plocks;
Mark Fashehccd979b2005-12-15 14:31:24 -0800359 i_size_write(inode, le64_to_cpu(fe->i_size));
Goldwyn Rodrigues5e98d492010-06-28 10:04:32 -0500360 OCFS2_I(inode)->ip_dir_lock_gen = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -0800361 break;
362 case S_IFLNK:
Al Viroea022dfb2012-05-03 10:14:29 -0400363 inode->i_op = &ocfs2_symlink_inode_operations;
Mark Fashehccd979b2005-12-15 14:31:24 -0800364 i_size_write(inode, le64_to_cpu(fe->i_size));
365 break;
366 default:
367 inode->i_op = &ocfs2_special_file_iops;
368 init_special_inode(inode, inode->i_mode,
369 inode->i_rdev);
370 break;
371 }
372
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700373 if (create_ino) {
374 inode->i_ino = ino_from_blkno(inode->i_sb,
375 le64_to_cpu(fe->i_blkno));
376
377 /*
378 * If we ever want to create system files from kernel,
379 * the generation argument to
380 * ocfs2_inode_lock_res_init() will have to change.
381 */
Mark Fasheh1ca1a112007-04-27 16:01:25 -0700382 BUG_ON(le32_to_cpu(fe->i_flags) & OCFS2_SYSTEM_FL);
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700383
Mark Fashehe63aecb62007-10-18 15:30:42 -0700384 ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_inode_lockres,
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700385 OCFS2_LOCK_TYPE_META, 0, inode);
Tiger Yang50008632007-03-20 16:01:38 -0700386
387 ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres,
388 OCFS2_LOCK_TYPE_OPEN, 0, inode);
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700389 }
390
Mark Fashehccd979b2005-12-15 14:31:24 -0800391 ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_rw_lockres,
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700392 OCFS2_LOCK_TYPE_RW, inode->i_generation,
393 inode);
394
Herbert Poetzlca4d1472006-07-03 17:27:12 -0700395 ocfs2_set_inode_flags(inode);
Herbert Poetzlca4d1472006-07-03 17:27:12 -0700396
Tao Ma13821152009-02-25 00:53:23 +0800397 OCFS2_I(inode)->ip_last_used_slot = 0;
398 OCFS2_I(inode)->ip_last_used_group = 0;
Mark Fashehe3b4a972009-12-07 13:16:07 -0800399
400 if (S_ISDIR(inode->i_mode))
401 ocfs2_resv_set_type(&OCFS2_I(inode)->ip_la_data_resv,
402 OCFS2_RESV_FLAG_DIR);
Mark Fashehccd979b2005-12-15 14:31:24 -0800403}
404
405static int ocfs2_read_locked_inode(struct inode *inode,
406 struct ocfs2_find_inode_args *args)
407{
408 struct super_block *sb;
409 struct ocfs2_super *osb;
410 struct ocfs2_dinode *fe;
411 struct buffer_head *bh = NULL;
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700412 int status, can_lock;
413 u32 generation = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -0800414
Mark Fashehccd979b2005-12-15 14:31:24 -0800415 status = -EINVAL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800416 sb = inode->i_sb;
417 osb = OCFS2_SB(sb);
418
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700419 /*
420 * To improve performance of cold-cache inode stats, we take
421 * the cluster lock here if possible.
422 *
423 * Generally, OCFS2 never trusts the contents of an inode
424 * unless it's holding a cluster lock, so taking it here isn't
425 * a correctness issue as much as it is a performance
426 * improvement.
427 *
428 * There are three times when taking the lock is not a good idea:
429 *
430 * 1) During startup, before we have initialized the DLM.
431 *
432 * 2) If we are reading certain system files which never get
433 * cluster locks (local alloc, truncate log).
434 *
435 * 3) If the process doing the iget() is responsible for
436 * orphan dir recovery. We're holding the orphan dir lock and
437 * can get into a deadlock with another process on another
438 * node in ->delete_inode().
439 *
440 * #1 and #2 can be simply solved by never taking the lock
441 * here for system files (which are the only type we read
442 * during mount). It's a heavier approach, but our main
Uwe Kleine-Königb5950762010-11-01 15:38:34 -0400443 * concern is user-accessible files anyway.
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700444 *
445 * #3 works itself out because we'll eventually take the
446 * cluster lock before trusting anything anyway.
447 */
448 can_lock = !(args->fi_flags & OCFS2_FI_FLAG_SYSFILE)
Tiger Yang50008632007-03-20 16:01:38 -0700449 && !(args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY)
Sunil Mushranc271c5c2006-12-05 17:56:35 -0800450 && !ocfs2_mount_local(osb);
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700451
Tao Ma64f3b262011-02-22 22:24:57 +0800452 trace_ocfs2_read_locked_inode(
453 (unsigned long long)OCFS2_I(inode)->ip_blkno, can_lock);
454
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700455 /*
456 * To maintain backwards compatibility with older versions of
457 * ocfs2-tools, we still store the generation value for system
458 * files. The only ones that actually matter to userspace are
459 * the journals, but it's easier and inexpensive to just flag
460 * all system files similarly.
461 */
462 if (args->fi_flags & OCFS2_FI_FLAG_SYSFILE)
463 generation = osb->fs_generation;
464
Mark Fashehe63aecb62007-10-18 15:30:42 -0700465 ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_inode_lockres,
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700466 OCFS2_LOCK_TYPE_META,
467 generation, inode);
468
Tiger Yang50008632007-03-20 16:01:38 -0700469 ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres,
470 OCFS2_LOCK_TYPE_OPEN,
471 0, inode);
472
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700473 if (can_lock) {
Tiger Yang50008632007-03-20 16:01:38 -0700474 status = ocfs2_open_lock(inode);
475 if (status) {
476 make_bad_inode(inode);
477 mlog_errno(status);
478 return status;
479 }
Mark Fashehe63aecb62007-10-18 15:30:42 -0700480 status = ocfs2_inode_lock(inode, NULL, 0);
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700481 if (status) {
482 make_bad_inode(inode);
483 mlog_errno(status);
484 return status;
485 }
486 }
487
Tiger Yang50008632007-03-20 16:01:38 -0700488 if (args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY) {
489 status = ocfs2_try_open_lock(inode, 0);
490 if (status) {
Sunil Mushran2bd63212010-01-25 16:57:38 -0800491 make_bad_inode(inode);
Tiger Yang50008632007-03-20 16:01:38 -0700492 return status;
493 }
494 }
495
Joel Beckerb657c952008-11-13 14:49:11 -0800496 if (can_lock) {
497 status = ocfs2_read_inode_block_full(inode, &bh,
498 OCFS2_BH_IGNORE_CACHE);
499 } else {
Joel Beckerda1e9092008-10-09 17:20:29 -0700500 status = ocfs2_read_blocks_sync(osb, args->fi_blkno, 1, &bh);
Sunil Mushranf5ce5a02010-08-12 16:24:26 -0700501 /*
502 * If buffer is in jbd, then its checksum may not have been
503 * computed as yet.
504 */
505 if (!status && !buffer_jbd(bh))
Joel Beckerb657c952008-11-13 14:49:11 -0800506 status = ocfs2_validate_inode_block(osb->sb, bh);
507 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800508 if (status < 0) {
509 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -0800510 goto bail;
511 }
512
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700513 status = -EINVAL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800514 fe = (struct ocfs2_dinode *) bh->b_data;
Mark Fashehccd979b2005-12-15 14:31:24 -0800515
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700516 /*
517 * This is a code bug. Right now the caller needs to
518 * understand whether it is asking for a system file inode or
519 * not so the proper lock names can be built.
520 */
521 mlog_bug_on_msg(!!(fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) !=
522 !!(args->fi_flags & OCFS2_FI_FLAG_SYSFILE),
523 "Inode %llu: system file state is ambigous\n",
524 (unsigned long long)args->fi_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -0800525
526 if (S_ISCHR(le16_to_cpu(fe->i_mode)) ||
527 S_ISBLK(le16_to_cpu(fe->i_mode)))
Joel Beckerb657c952008-11-13 14:49:11 -0800528 inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev));
Mark Fashehccd979b2005-12-15 14:31:24 -0800529
Joel Beckerb657c952008-11-13 14:49:11 -0800530 ocfs2_populate_inode(inode, fe, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -0800531
532 BUG_ON(args->fi_blkno != le64_to_cpu(fe->i_blkno));
533
Mark Fashehccd979b2005-12-15 14:31:24 -0800534 status = 0;
535
536bail:
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700537 if (can_lock)
Mark Fashehe63aecb62007-10-18 15:30:42 -0700538 ocfs2_inode_unlock(inode, 0);
Mark Fasheh24c19ef2006-09-22 17:28:19 -0700539
540 if (status < 0)
541 make_bad_inode(inode);
542
Jan Kara4a635a12014-12-10 15:41:42 -0800543 brelse(bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800544
Mark Fashehccd979b2005-12-15 14:31:24 -0800545 return status;
546}
547
548void ocfs2_sync_blockdev(struct super_block *sb)
549{
550 sync_blockdev(sb->s_bdev);
551}
552
553static int ocfs2_truncate_for_delete(struct ocfs2_super *osb,
554 struct inode *inode,
555 struct buffer_head *fe_bh)
556{
557 int status = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -0800558 struct ocfs2_dinode *fe;
Mark Fasheh60b11392007-02-16 11:46:50 -0800559 handle_t *handle = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800560
Mark Fashehccd979b2005-12-15 14:31:24 -0800561 fe = (struct ocfs2_dinode *) fe_bh->b_data;
562
Mark Fasheh1afc32b2007-09-07 14:46:51 -0700563 /*
564 * This check will also skip truncate of inodes with inline
565 * data and fast symlinks.
566 */
Mark Fasheh3a0782d2007-01-17 12:53:31 -0800567 if (fe->i_clusters) {
Joel Becker2b4e30f2008-09-03 20:03:41 -0700568 if (ocfs2_should_order_data(inode))
569 ocfs2_begin_ordered_truncate(inode, 0);
570
Mark Fasheh60b11392007-02-16 11:46:50 -0800571 handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
572 if (IS_ERR(handle)) {
573 status = PTR_ERR(handle);
Dan Carpenter0350cb02010-04-22 11:39:29 +0200574 handle = NULL;
Mark Fasheh60b11392007-02-16 11:46:50 -0800575 mlog_errno(status);
576 goto out;
577 }
578
Joel Becker0cf2f762009-02-12 16:41:25 -0800579 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode),
580 fe_bh,
Joel Becker13723d02008-10-17 19:25:01 -0700581 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fasheh60b11392007-02-16 11:46:50 -0800582 if (status < 0) {
583 mlog_errno(status);
584 goto out;
585 }
586
587 i_size_write(inode, 0);
588
589 status = ocfs2_mark_inode_dirty(handle, inode, fe_bh);
590 if (status < 0) {
591 mlog_errno(status);
592 goto out;
593 }
594
595 ocfs2_commit_trans(osb, handle);
596 handle = NULL;
597
Tristan Ye78f94672010-05-11 17:54:42 +0800598 status = ocfs2_commit_truncate(osb, inode, fe_bh);
Mark Fasheh3a0782d2007-01-17 12:53:31 -0800599 if (status < 0) {
600 mlog_errno(status);
601 goto out;
602 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800603 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800604
Mark Fasheh60b11392007-02-16 11:46:50 -0800605out:
606 if (handle)
607 ocfs2_commit_trans(osb, handle);
Mark Fashehccd979b2005-12-15 14:31:24 -0800608 return status;
609}
610
611static int ocfs2_remove_inode(struct inode *inode,
612 struct buffer_head *di_bh,
613 struct inode *orphan_dir_inode,
614 struct buffer_head *orphan_dir_bh)
615{
616 int status;
617 struct inode *inode_alloc_inode = NULL;
618 struct buffer_head *inode_alloc_bh = NULL;
Mark Fasheh1fabe142006-10-09 18:11:45 -0700619 handle_t *handle;
Mark Fashehccd979b2005-12-15 14:31:24 -0800620 struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
621 struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data;
622
623 inode_alloc_inode =
624 ocfs2_get_system_file_inode(osb, INODE_ALLOC_SYSTEM_INODE,
625 le16_to_cpu(di->i_suballoc_slot));
626 if (!inode_alloc_inode) {
Joseph Qi62f8b1f2015-04-14 15:43:24 -0700627 status = -ENOENT;
Mark Fashehccd979b2005-12-15 14:31:24 -0800628 mlog_errno(status);
629 goto bail;
630 }
631
Jes Sorensen1b1dcc12006-01-09 15:59:24 -0800632 mutex_lock(&inode_alloc_inode->i_mutex);
Mark Fashehe63aecb62007-10-18 15:30:42 -0700633 status = ocfs2_inode_lock(inode_alloc_inode, &inode_alloc_bh, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -0800634 if (status < 0) {
Jes Sorensen1b1dcc12006-01-09 15:59:24 -0800635 mutex_unlock(&inode_alloc_inode->i_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -0800636
637 mlog_errno(status);
638 goto bail;
639 }
640
Jan Karaa90714c2008-10-09 19:38:40 +0200641 handle = ocfs2_start_trans(osb, OCFS2_DELETE_INODE_CREDITS +
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800642 ocfs2_quota_trans_credits(inode->i_sb));
Mark Fashehccd979b2005-12-15 14:31:24 -0800643 if (IS_ERR(handle)) {
644 status = PTR_ERR(handle);
645 mlog_errno(status);
646 goto bail_unlock;
647 }
648
Li Dongyangd4cd1872010-04-22 16:11:19 +0800649 if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)) {
650 status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode,
Joseph Qi06ee5c72015-02-16 15:59:54 -0800651 orphan_dir_bh, false);
Li Dongyangd4cd1872010-04-22 16:11:19 +0800652 if (status < 0) {
653 mlog_errno(status);
654 goto bail_commit;
655 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800656 }
657
658 /* set the inodes dtime */
Joel Becker0cf2f762009-02-12 16:41:25 -0800659 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), di_bh,
Joel Becker13723d02008-10-17 19:25:01 -0700660 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -0800661 if (status < 0) {
662 mlog_errno(status);
663 goto bail_commit;
664 }
665
666 di->i_dtime = cpu_to_le64(CURRENT_TIME.tv_sec);
Marcin Slusarz4092d492007-12-25 15:52:59 +0100667 di->i_flags &= cpu_to_le32(~(OCFS2_VALID_FL | OCFS2_ORPHANED_FL));
Joel Beckerec20cec2010-03-19 14:13:52 -0700668 ocfs2_journal_dirty(handle, di_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800669
Joel Becker8cb471e2009-02-10 20:00:41 -0800670 ocfs2_remove_from_cache(INODE_CACHE(inode), di_bh);
Christoph Hellwig63936dd2010-03-03 09:05:01 -0500671 dquot_free_inode(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800672
673 status = ocfs2_free_dinode(handle, inode_alloc_inode,
674 inode_alloc_bh, di);
675 if (status < 0)
676 mlog_errno(status);
677
678bail_commit:
Mark Fasheh02dc1af2006-10-09 16:48:10 -0700679 ocfs2_commit_trans(osb, handle);
Mark Fashehccd979b2005-12-15 14:31:24 -0800680bail_unlock:
Mark Fashehe63aecb62007-10-18 15:30:42 -0700681 ocfs2_inode_unlock(inode_alloc_inode, 1);
Jes Sorensen1b1dcc12006-01-09 15:59:24 -0800682 mutex_unlock(&inode_alloc_inode->i_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -0800683 brelse(inode_alloc_bh);
684bail:
685 iput(inode_alloc_inode);
686
687 return status;
688}
689
Sunil Mushran2bd63212010-01-25 16:57:38 -0800690/*
Mark Fashehb4df6ed2006-02-22 17:35:08 -0800691 * Serialize with orphan dir recovery. If the process doing
692 * recovery on this orphan dir does an iget() with the dir
693 * i_mutex held, we'll deadlock here. Instead we detect this
694 * and exit early - recovery will wipe this inode for us.
695 */
696static int ocfs2_check_orphan_recovery_state(struct ocfs2_super *osb,
697 int slot)
698{
699 int ret = 0;
700
701 spin_lock(&osb->osb_lock);
702 if (ocfs2_node_map_test_bit(osb, &osb->osb_recovering_orphan_dirs, slot)) {
Mark Fashehb4df6ed2006-02-22 17:35:08 -0800703 ret = -EDEADLK;
704 goto out;
705 }
706 /* This signals to the orphan recovery process that it should
707 * wait for us to handle the wipe. */
708 osb->osb_orphan_wipes[slot]++;
709out:
710 spin_unlock(&osb->osb_lock);
Tao Ma64f3b262011-02-22 22:24:57 +0800711 trace_ocfs2_check_orphan_recovery_state(slot, ret);
Mark Fashehb4df6ed2006-02-22 17:35:08 -0800712 return ret;
713}
714
715static void ocfs2_signal_wipe_completion(struct ocfs2_super *osb,
716 int slot)
717{
718 spin_lock(&osb->osb_lock);
719 osb->osb_orphan_wipes[slot]--;
720 spin_unlock(&osb->osb_lock);
721
722 wake_up(&osb->osb_wipe_event);
723}
724
Mark Fashehccd979b2005-12-15 14:31:24 -0800725static int ocfs2_wipe_inode(struct inode *inode,
726 struct buffer_head *di_bh)
727{
Joel Beckerd5776322010-05-03 19:15:49 -0700728 int status, orphaned_slot = -1;
Mark Fashehccd979b2005-12-15 14:31:24 -0800729 struct inode *orphan_dir_inode = NULL;
730 struct buffer_head *orphan_dir_bh = NULL;
731 struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
Li Dongyangd4cd1872010-04-22 16:11:19 +0800732 struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data;
Mark Fashehccd979b2005-12-15 14:31:24 -0800733
Li Dongyangd4cd1872010-04-22 16:11:19 +0800734 if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)) {
735 orphaned_slot = le16_to_cpu(di->i_orphaned_slot);
Mark Fashehb4df6ed2006-02-22 17:35:08 -0800736
Li Dongyangd4cd1872010-04-22 16:11:19 +0800737 status = ocfs2_check_orphan_recovery_state(osb, orphaned_slot);
738 if (status)
739 return status;
Mark Fashehb4df6ed2006-02-22 17:35:08 -0800740
Li Dongyangd4cd1872010-04-22 16:11:19 +0800741 orphan_dir_inode = ocfs2_get_system_file_inode(osb,
742 ORPHAN_DIR_SYSTEM_INODE,
743 orphaned_slot);
744 if (!orphan_dir_inode) {
Joseph Qi62f8b1f2015-04-14 15:43:24 -0700745 status = -ENOENT;
Li Dongyangd4cd1872010-04-22 16:11:19 +0800746 mlog_errno(status);
747 goto bail;
748 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800749
Li Dongyangd4cd1872010-04-22 16:11:19 +0800750 /* Lock the orphan dir. The lock will be held for the entire
751 * delete_inode operation. We do this now to avoid races with
752 * recovery completion on other nodes. */
753 mutex_lock(&orphan_dir_inode->i_mutex);
754 status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
755 if (status < 0) {
756 mutex_unlock(&orphan_dir_inode->i_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -0800757
Li Dongyangd4cd1872010-04-22 16:11:19 +0800758 mlog_errno(status);
759 goto bail;
760 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800761 }
762
763 /* we do this while holding the orphan dir lock because we
Mark Fasheh34d024f2007-09-24 15:56:19 -0700764 * don't want recovery being run from another node to try an
765 * inode delete underneath us -- this will result in two nodes
Mark Fashehccd979b2005-12-15 14:31:24 -0800766 * truncating the same file! */
767 status = ocfs2_truncate_for_delete(osb, inode, di_bh);
768 if (status < 0) {
769 mlog_errno(status);
770 goto bail_unlock_dir;
771 }
772
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800773 /* Remove any dir index tree */
774 if (S_ISDIR(inode->i_mode)) {
775 status = ocfs2_dx_dir_truncate(inode, di_bh);
776 if (status) {
777 mlog_errno(status);
778 goto bail_unlock_dir;
779 }
780 }
781
Tiger Yangcf1d6c72008-08-18 17:11:00 +0800782 /*Free extended attribute resources associated with this inode.*/
783 status = ocfs2_xattr_remove(inode, di_bh);
784 if (status < 0) {
785 mlog_errno(status);
786 goto bail_unlock_dir;
787 }
788
Tao Ma8b2c0db2009-08-18 11:43:49 +0800789 status = ocfs2_remove_refcount_tree(inode, di_bh);
790 if (status < 0) {
791 mlog_errno(status);
792 goto bail_unlock_dir;
793 }
794
Mark Fashehccd979b2005-12-15 14:31:24 -0800795 status = ocfs2_remove_inode(inode, di_bh, orphan_dir_inode,
796 orphan_dir_bh);
797 if (status < 0)
798 mlog_errno(status);
799
800bail_unlock_dir:
Li Dongyangd4cd1872010-04-22 16:11:19 +0800801 if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)
802 return status;
803
Mark Fashehe63aecb62007-10-18 15:30:42 -0700804 ocfs2_inode_unlock(orphan_dir_inode, 1);
Jes Sorensen1b1dcc12006-01-09 15:59:24 -0800805 mutex_unlock(&orphan_dir_inode->i_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -0800806 brelse(orphan_dir_bh);
807bail:
808 iput(orphan_dir_inode);
Mark Fashehb4df6ed2006-02-22 17:35:08 -0800809 ocfs2_signal_wipe_completion(osb, orphaned_slot);
Mark Fashehccd979b2005-12-15 14:31:24 -0800810
811 return status;
812}
813
814/* There is a series of simple checks that should be done before a
Mark Fasheh34d024f2007-09-24 15:56:19 -0700815 * trylock is even considered. Encapsulate those in this function. */
Mark Fashehccd979b2005-12-15 14:31:24 -0800816static int ocfs2_inode_is_valid_to_delete(struct inode *inode)
817{
818 int ret = 0;
819 struct ocfs2_inode_info *oi = OCFS2_I(inode);
820 struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
821
Tao Ma64f3b262011-02-22 22:24:57 +0800822 trace_ocfs2_inode_is_valid_to_delete(current, osb->dc_task,
823 (unsigned long long)oi->ip_blkno,
824 oi->ip_flags);
825
Mark Fashehccd979b2005-12-15 14:31:24 -0800826 /* We shouldn't be getting here for the root directory
827 * inode.. */
828 if (inode == osb->root_inode) {
829 mlog(ML_ERROR, "Skipping delete of root inode.\n");
830 goto bail;
831 }
832
Jan Karabd62ad72014-04-03 14:46:54 -0700833 /*
834 * If we're coming from downconvert_thread we can't go into our own
835 * voting [hello, deadlock city!] so we cannot delete the inode. But
836 * since we dropped last inode ref when downconverting dentry lock,
837 * we cannot have the file open and thus the node doing unlink will
838 * take care of deleting the inode.
839 */
Tao Ma64f3b262011-02-22 22:24:57 +0800840 if (current == osb->dc_task)
Mark Fashehccd979b2005-12-15 14:31:24 -0800841 goto bail;
Mark Fashehccd979b2005-12-15 14:31:24 -0800842
843 spin_lock(&oi->ip_lock);
844 /* OCFS2 *never* deletes system files. This should technically
845 * never get here as system file inodes should always have a
846 * positive link count. */
847 if (oi->ip_flags & OCFS2_INODE_SYSTEM_FILE) {
Mark Fashehb06970532006-03-03 10:24:33 -0800848 mlog(ML_ERROR, "Skipping delete of system file %llu\n",
849 (unsigned long long)oi->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -0800850 goto bail_unlock;
851 }
852
Mark Fashehccd979b2005-12-15 14:31:24 -0800853 ret = 1;
854bail_unlock:
855 spin_unlock(&oi->ip_lock);
856bail:
857 return ret;
858}
859
860/* Query the cluster to determine whether we should wipe an inode from
861 * disk or not.
862 *
863 * Requires the inode to have the cluster lock. */
864static int ocfs2_query_inode_wipe(struct inode *inode,
865 struct buffer_head *di_bh,
866 int *wipe)
867{
Tao Ma64f3b262011-02-22 22:24:57 +0800868 int status = 0, reason = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -0800869 struct ocfs2_inode_info *oi = OCFS2_I(inode);
870 struct ocfs2_dinode *di;
871
872 *wipe = 0;
873
Tao Ma64f3b262011-02-22 22:24:57 +0800874 trace_ocfs2_query_inode_wipe_begin((unsigned long long)oi->ip_blkno,
875 inode->i_nlink);
876
Mark Fashehccd979b2005-12-15 14:31:24 -0800877 /* While we were waiting for the cluster lock in
878 * ocfs2_delete_inode, another node might have asked to delete
879 * the inode. Recheck our flags to catch this. */
880 if (!ocfs2_inode_is_valid_to_delete(inode)) {
Tao Ma64f3b262011-02-22 22:24:57 +0800881 reason = 1;
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. */
Tao Ma64f3b262011-02-22 22:24:57 +0800887 if (inode->i_nlink)
Mark Fashehccd979b2005-12-15 14:31:24 -0800888 goto bail;
Mark Fashehccd979b2005-12-15 14:31:24 -0800889
890 /* Do some basic inode verification... */
891 di = (struct ocfs2_dinode *) di_bh->b_data;
Li Dongyangd4cd1872010-04-22 16:11:19 +0800892 if (!(di->i_flags & cpu_to_le32(OCFS2_ORPHANED_FL)) &&
893 !(oi->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)) {
Tristan Yeb54c2ca2010-03-19 09:21:10 +0800894 /*
895 * Inodes in the orphan dir must have ORPHANED_FL. The only
896 * inodes that come back out of the orphan dir are reflink
897 * targets. A reflink target may be moved out of the orphan
898 * dir between the time we scan the directory and the time we
899 * process it. This would lead to HAS_REFCOUNT_FL being set but
900 * ORPHANED_FL not.
901 */
902 if (di->i_dyn_features & cpu_to_le16(OCFS2_HAS_REFCOUNT_FL)) {
Tao Ma64f3b262011-02-22 22:24:57 +0800903 reason = 2;
Tristan Yeb54c2ca2010-03-19 09:21:10 +0800904 goto bail;
905 }
906
Mark Fashehccd979b2005-12-15 14:31:24 -0800907 /* for lack of a better error? */
908 status = -EEXIST;
909 mlog(ML_ERROR,
Mark Fashehb06970532006-03-03 10:24:33 -0800910 "Inode %llu (on-disk %llu) not orphaned! "
Mark Fashehccd979b2005-12-15 14:31:24 -0800911 "Disk flags 0x%x, inode flags 0x%x\n",
Mark Fashehb06970532006-03-03 10:24:33 -0800912 (unsigned long long)oi->ip_blkno,
Mark Fasheh1ca1a112007-04-27 16:01:25 -0700913 (unsigned long long)le64_to_cpu(di->i_blkno),
914 le32_to_cpu(di->i_flags), oi->ip_flags);
Mark Fashehccd979b2005-12-15 14:31:24 -0800915 goto bail;
916 }
917
918 /* has someone already deleted us?! baaad... */
919 if (di->i_dtime) {
920 status = -EEXIST;
921 mlog_errno(status);
922 goto bail;
923 }
924
Mark Fasheh6f16bf62007-03-20 17:17:54 -0700925 /*
926 * This is how ocfs2 determines whether an inode is still live
927 * within the cluster. Every node takes a shared read lock on
928 * the inode open lock in ocfs2_read_locked_inode(). When we
929 * get to ->delete_inode(), each node tries to convert it's
930 * lock to an exclusive. Trylocks are serialized by the inode
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300931 * meta data lock. If the upconvert succeeds, we know the inode
Mark Fasheh6f16bf62007-03-20 17:17:54 -0700932 * is no longer live and can be deleted.
933 *
934 * Though we call this with the meta data lock held, the
935 * trylock keeps us from ABBA deadlock.
936 */
937 status = ocfs2_try_open_lock(inode, 1);
Tiger Yang50008632007-03-20 16:01:38 -0700938 if (status == -EAGAIN) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800939 status = 0;
Tao Ma64f3b262011-02-22 22:24:57 +0800940 reason = 3;
Mark Fashehccd979b2005-12-15 14:31:24 -0800941 goto bail;
942 }
943 if (status < 0) {
944 mlog_errno(status);
945 goto bail;
946 }
947
Tiger Yang50008632007-03-20 16:01:38 -0700948 *wipe = 1;
Tao Ma64f3b262011-02-22 22:24:57 +0800949 trace_ocfs2_query_inode_wipe_succ(le16_to_cpu(di->i_orphaned_slot));
Mark Fashehccd979b2005-12-15 14:31:24 -0800950
951bail:
Tao Ma64f3b262011-02-22 22:24:57 +0800952 trace_ocfs2_query_inode_wipe_end(status, reason);
Mark Fashehccd979b2005-12-15 14:31:24 -0800953 return status;
954}
955
956/* Support function for ocfs2_delete_inode. Will help us keep the
957 * inode data in a consistent state for clear_inode. Always truncates
958 * pages, optionally sync's them first. */
959static void ocfs2_cleanup_delete_inode(struct inode *inode,
960 int sync_data)
961{
Tao Ma64f3b262011-02-22 22:24:57 +0800962 trace_ocfs2_cleanup_delete_inode(
963 (unsigned long long)OCFS2_I(inode)->ip_blkno, sync_data);
Mark Fashehccd979b2005-12-15 14:31:24 -0800964 if (sync_data)
Jan Kara249ec932011-11-08 00:20:39 +0100965 filemap_write_and_wait(inode->i_mapping);
Johannes Weiner91b0abe2014-04-03 14:47:49 -0700966 truncate_inode_pages_final(&inode->i_data);
Mark Fashehccd979b2005-12-15 14:31:24 -0800967}
968
Al Viro066d92d2010-06-08 21:28:10 -0400969static void ocfs2_delete_inode(struct inode *inode)
Mark Fashehccd979b2005-12-15 14:31:24 -0800970{
971 int wipe, status;
Joel Beckere4b963f2009-09-02 17:17:36 -0700972 sigset_t oldset;
Mark Fashehccd979b2005-12-15 14:31:24 -0800973 struct buffer_head *di_bh = NULL;
Joseph Qiad694822015-09-04 15:44:40 -0700974 struct ocfs2_dinode *di = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800975
Tao Ma64f3b262011-02-22 22:24:57 +0800976 trace_ocfs2_delete_inode(inode->i_ino,
977 (unsigned long long)OCFS2_I(inode)->ip_blkno,
978 is_bad_inode(inode));
Mark Fashehccd979b2005-12-15 14:31:24 -0800979
Jan Karaa90714c2008-10-09 19:38:40 +0200980 /* When we fail in read_inode() we mark inode as bad. The second test
981 * catches the case when inode allocation fails before allocating
982 * a block for inode. */
Tao Ma64f3b262011-02-22 22:24:57 +0800983 if (is_bad_inode(inode) || !OCFS2_I(inode)->ip_blkno)
Mark Fashehccd979b2005-12-15 14:31:24 -0800984 goto bail;
Mark Fashehccd979b2005-12-15 14:31:24 -0800985
986 if (!ocfs2_inode_is_valid_to_delete(inode)) {
987 /* It's probably not necessary to truncate_inode_pages
988 * here but we do it for safety anyway (it will most
989 * likely be a no-op anyway) */
990 ocfs2_cleanup_delete_inode(inode, 0);
991 goto bail;
992 }
993
Jan Karabd62ad72014-04-03 14:46:54 -0700994 dquot_initialize(inode);
995
Mark Fashehccd979b2005-12-15 14:31:24 -0800996 /* We want to block signals in delete_inode as the lock and
997 * messaging paths may return us -ERESTARTSYS. Which would
998 * cause us to exit early, resulting in inodes being orphaned
999 * forever. */
Joel Beckere4b963f2009-09-02 17:17:36 -07001000 ocfs2_block_signals(&oldset);
Mark Fashehccd979b2005-12-15 14:31:24 -08001001
wengang wang6ca497a2009-03-06 21:29:10 +08001002 /*
1003 * Synchronize us against ocfs2_get_dentry. We take this in
1004 * shared mode so that all nodes can still concurrently
1005 * process deletes.
1006 */
1007 status = ocfs2_nfs_sync_lock(OCFS2_SB(inode->i_sb), 0);
1008 if (status < 0) {
1009 mlog(ML_ERROR, "getting nfs sync lock(PR) failed %d\n", status);
1010 ocfs2_cleanup_delete_inode(inode, 0);
1011 goto bail_unblock;
1012 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001013 /* Lock down the inode. This gives us an up to date view of
1014 * it's metadata (for verification), and allows us to
Mark Fasheh34d024f2007-09-24 15:56:19 -07001015 * serialize delete_inode on multiple nodes.
Mark Fashehccd979b2005-12-15 14:31:24 -08001016 *
1017 * Even though we might be doing a truncate, we don't take the
1018 * allocation lock here as it won't be needed - nobody will
1019 * have the file open.
1020 */
Mark Fashehe63aecb62007-10-18 15:30:42 -07001021 status = ocfs2_inode_lock(inode, &di_bh, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001022 if (status < 0) {
1023 if (status != -ENOENT)
1024 mlog_errno(status);
1025 ocfs2_cleanup_delete_inode(inode, 0);
wengang wang6ca497a2009-03-06 21:29:10 +08001026 goto bail_unlock_nfs_sync;
Mark Fashehccd979b2005-12-15 14:31:24 -08001027 }
1028
Joseph Qiad694822015-09-04 15:44:40 -07001029 di = (struct ocfs2_dinode *)di_bh->b_data;
1030 /* Skip inode deletion and wait for dio orphan entry recovered
1031 * first */
1032 if (unlikely(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))) {
1033 ocfs2_cleanup_delete_inode(inode, 0);
1034 goto bail_unlock_inode;
1035 }
1036
Mark Fashehccd979b2005-12-15 14:31:24 -08001037 /* Query the cluster. This will be the final decision made
1038 * before we go ahead and wipe the inode. */
1039 status = ocfs2_query_inode_wipe(inode, di_bh, &wipe);
1040 if (!wipe || status < 0) {
Mark Fasheh34d024f2007-09-24 15:56:19 -07001041 /* Error and remote inode busy both mean we won't be
Mark Fashehccd979b2005-12-15 14:31:24 -08001042 * removing the inode, so they take almost the same
1043 * path. */
1044 if (status < 0)
1045 mlog_errno(status);
1046
Mark Fasheh34d024f2007-09-24 15:56:19 -07001047 /* Someone in the cluster has disallowed a wipe of
1048 * this inode, or it was never completely
1049 * orphaned. Write out the pages and exit now. */
Mark Fashehccd979b2005-12-15 14:31:24 -08001050 ocfs2_cleanup_delete_inode(inode, 1);
1051 goto bail_unlock_inode;
1052 }
1053
1054 ocfs2_cleanup_delete_inode(inode, 0);
1055
1056 status = ocfs2_wipe_inode(inode, di_bh);
1057 if (status < 0) {
Mark Fashehb4df6ed2006-02-22 17:35:08 -08001058 if (status != -EDEADLK)
1059 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001060 goto bail_unlock_inode;
1061 }
1062
Mark Fasheh24c19ef2006-09-22 17:28:19 -07001063 /*
1064 * Mark the inode as successfully deleted.
1065 *
1066 * This is important for ocfs2_clear_inode() as it will check
1067 * this flag and skip any checkpointing work
1068 *
1069 * ocfs2_stuff_meta_lvb() also uses this flag to invalidate
1070 * the LVB for other nodes.
1071 */
Mark Fashehccd979b2005-12-15 14:31:24 -08001072 OCFS2_I(inode)->ip_flags |= OCFS2_INODE_DELETED;
1073
1074bail_unlock_inode:
Mark Fashehe63aecb62007-10-18 15:30:42 -07001075 ocfs2_inode_unlock(inode, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001076 brelse(di_bh);
wengang wang6ca497a2009-03-06 21:29:10 +08001077
1078bail_unlock_nfs_sync:
1079 ocfs2_nfs_sync_unlock(OCFS2_SB(inode->i_sb), 0);
1080
Mark Fashehccd979b2005-12-15 14:31:24 -08001081bail_unblock:
Joel Beckere4b963f2009-09-02 17:17:36 -07001082 ocfs2_unblock_signals(&oldset);
Mark Fashehccd979b2005-12-15 14:31:24 -08001083bail:
Tao Mac1e8d352011-03-07 16:43:21 +08001084 return;
Mark Fashehccd979b2005-12-15 14:31:24 -08001085}
1086
Al Viro066d92d2010-06-08 21:28:10 -04001087static void ocfs2_clear_inode(struct inode *inode)
Mark Fashehccd979b2005-12-15 14:31:24 -08001088{
1089 int status;
1090 struct ocfs2_inode_info *oi = OCFS2_I(inode);
Jan Kara84d86f82014-04-03 14:46:57 -07001091 struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
Mark Fashehccd979b2005-12-15 14:31:24 -08001092
Jan Karadbd57682012-05-03 14:48:02 +02001093 clear_inode(inode);
Tao Ma64f3b262011-02-22 22:24:57 +08001094 trace_ocfs2_clear_inode((unsigned long long)oi->ip_blkno,
1095 inode->i_nlink);
Mark Fashehccd979b2005-12-15 14:31:24 -08001096
1097 mlog_bug_on_msg(OCFS2_SB(inode->i_sb) == NULL,
1098 "Inode=%lu\n", inode->i_ino);
1099
Christoph Hellwig9f754752010-03-03 09:05:05 -05001100 dquot_drop(inode);
Christoph Hellwig257ba152010-03-03 09:05:04 -05001101
Mark Fasheh34d024f2007-09-24 15:56:19 -07001102 /* To preven remote deletes we hold open lock before, now it
1103 * is time to unlock PR and EX open locks. */
Tiger Yang50008632007-03-20 16:01:38 -07001104 ocfs2_open_unlock(inode);
1105
Mark Fashehccd979b2005-12-15 14:31:24 -08001106 /* Do these before all the other work so that we don't bounce
Mark Fasheh34d024f2007-09-24 15:56:19 -07001107 * the downconvert thread while waiting to destroy the locks. */
Jan Kara84d86f82014-04-03 14:46:57 -07001108 ocfs2_mark_lockres_freeing(osb, &oi->ip_rw_lockres);
1109 ocfs2_mark_lockres_freeing(osb, &oi->ip_inode_lockres);
1110 ocfs2_mark_lockres_freeing(osb, &oi->ip_open_lockres);
Mark Fashehccd979b2005-12-15 14:31:24 -08001111
Mark Fasheh4fe370a2009-12-07 13:15:40 -08001112 ocfs2_resv_discard(&OCFS2_SB(inode->i_sb)->osb_la_resmap,
1113 &oi->ip_la_data_resv);
1114 ocfs2_resv_init_once(&oi->ip_la_data_resv);
1115
Mark Fashehccd979b2005-12-15 14:31:24 -08001116 /* We very well may get a clear_inode before all an inodes
1117 * metadata has hit disk. Of course, we can't drop any cluster
1118 * locks until the journal has finished with it. The only
1119 * exception here are successfully wiped inodes - their
1120 * metadata can now be considered to be part of the system
1121 * inodes from which it came. */
1122 if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED))
1123 ocfs2_checkpoint_inode(inode);
1124
1125 mlog_bug_on_msg(!list_empty(&oi->ip_io_markers),
Mark Fashehb06970532006-03-03 10:24:33 -08001126 "Clear inode of %llu, inode has io markers\n",
1127 (unsigned long long)oi->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08001128
Mark Fasheh83418972007-04-23 18:53:12 -07001129 ocfs2_extent_map_trunc(inode, 0);
1130
Mark Fashehccd979b2005-12-15 14:31:24 -08001131 status = ocfs2_drop_inode_locks(inode);
1132 if (status < 0)
1133 mlog_errno(status);
1134
1135 ocfs2_lock_res_free(&oi->ip_rw_lockres);
Mark Fashehe63aecb62007-10-18 15:30:42 -07001136 ocfs2_lock_res_free(&oi->ip_inode_lockres);
Tiger Yang50008632007-03-20 16:01:38 -07001137 ocfs2_lock_res_free(&oi->ip_open_lockres);
Mark Fashehccd979b2005-12-15 14:31:24 -08001138
Joel Becker66fb3452009-02-12 15:24:40 -08001139 ocfs2_metadata_cache_exit(INODE_CACHE(inode));
Mark Fashehccd979b2005-12-15 14:31:24 -08001140
Joel Becker8cb471e2009-02-10 20:00:41 -08001141 mlog_bug_on_msg(INODE_CACHE(inode)->ci_num_cached,
Mark Fashehb06970532006-03-03 10:24:33 -08001142 "Clear inode of %llu, inode has %u cache items\n",
Joel Becker8cb471e2009-02-10 20:00:41 -08001143 (unsigned long long)oi->ip_blkno,
1144 INODE_CACHE(inode)->ci_num_cached);
Mark Fashehccd979b2005-12-15 14:31:24 -08001145
Joel Becker8cb471e2009-02-10 20:00:41 -08001146 mlog_bug_on_msg(!(INODE_CACHE(inode)->ci_flags & OCFS2_CACHE_FL_INLINE),
Mark Fashehb06970532006-03-03 10:24:33 -08001147 "Clear inode of %llu, inode has a bad flag\n",
1148 (unsigned long long)oi->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08001149
1150 mlog_bug_on_msg(spin_is_locked(&oi->ip_lock),
Mark Fashehb06970532006-03-03 10:24:33 -08001151 "Clear inode of %llu, inode is locked\n",
1152 (unsigned long long)oi->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08001153
Mark Fasheh251b6ec2006-01-10 15:41:43 -08001154 mlog_bug_on_msg(!mutex_trylock(&oi->ip_io_mutex),
Mark Fashehb06970532006-03-03 10:24:33 -08001155 "Clear inode of %llu, io_mutex is locked\n",
1156 (unsigned long long)oi->ip_blkno);
Mark Fasheh251b6ec2006-01-10 15:41:43 -08001157 mutex_unlock(&oi->ip_io_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -08001158
1159 /*
1160 * down_trylock() returns 0, down_write_trylock() returns 1
1161 * kernel 1, world 0
1162 */
1163 mlog_bug_on_msg(!down_write_trylock(&oi->ip_alloc_sem),
Mark Fashehb06970532006-03-03 10:24:33 -08001164 "Clear inode of %llu, alloc_sem is locked\n",
1165 (unsigned long long)oi->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08001166 up_write(&oi->ip_alloc_sem);
1167
1168 mlog_bug_on_msg(oi->ip_open_count,
Mark Fashehb06970532006-03-03 10:24:33 -08001169 "Clear inode of %llu has open count %d\n",
1170 (unsigned long long)oi->ip_blkno, oi->ip_open_count);
Mark Fashehccd979b2005-12-15 14:31:24 -08001171
1172 /* Clear all other flags. */
Joel Becker47460d62009-02-10 16:05:07 -08001173 oi->ip_flags = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08001174 oi->ip_dir_start_lookup = 0;
1175 oi->ip_blkno = 0ULL;
Sunil Mushranae0dff62008-10-22 13:24:29 -07001176
1177 /*
1178 * ip_jinode is used to track txns against this inode. We ensure that
1179 * the journal is flushed before journal shutdown. Thus it is safe to
1180 * have inodes get cleaned up after journal shutdown.
1181 */
Joel Becker2b4e30f2008-09-03 20:03:41 -07001182 jbd2_journal_release_jbd_inode(OCFS2_SB(inode->i_sb)->journal->j_journal,
1183 &oi->ip_jinode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001184}
1185
Al Viro066d92d2010-06-08 21:28:10 -04001186void ocfs2_evict_inode(struct inode *inode)
1187{
1188 if (!inode->i_nlink ||
1189 (OCFS2_I(inode)->ip_flags & OCFS2_INODE_MAYBE_ORPHANED)) {
1190 ocfs2_delete_inode(inode);
1191 } else {
Johannes Weiner91b0abe2014-04-03 14:47:49 -07001192 truncate_inode_pages_final(&inode->i_data);
Al Viro066d92d2010-06-08 21:28:10 -04001193 }
1194 ocfs2_clear_inode(inode);
1195}
1196
Mark Fashehccd979b2005-12-15 14:31:24 -08001197/* Called under inode_lock, with no more references on the
1198 * struct inode, so it's safe here to check the flags field
1199 * and to manipulate i_nlink without any other locks. */
Al Viro45321ac2010-06-07 13:43:19 -04001200int ocfs2_drop_inode(struct inode *inode)
Mark Fashehccd979b2005-12-15 14:31:24 -08001201{
1202 struct ocfs2_inode_info *oi = OCFS2_I(inode);
1203
Tao Ma64f3b262011-02-22 22:24:57 +08001204 trace_ocfs2_drop_inode((unsigned long long)oi->ip_blkno,
1205 inode->i_nlink, oi->ip_flags);
Mark Fashehccd979b2005-12-15 14:31:24 -08001206
Xue jiufei513e2da2015-09-04 15:44:11 -07001207 assert_spin_locked(&inode->i_lock);
1208 inode->i_state |= I_WILL_FREE;
1209 spin_unlock(&inode->i_lock);
1210 write_inode_now(inode, 1);
1211 spin_lock(&inode->i_lock);
1212 WARN_ON(inode->i_state & I_NEW);
1213 inode->i_state &= ~I_WILL_FREE;
Mark Fashehccd979b2005-12-15 14:31:24 -08001214
Xue jiufei513e2da2015-09-04 15:44:11 -07001215 return 1;
Mark Fashehccd979b2005-12-15 14:31:24 -08001216}
1217
1218/*
Mark Fashehccd979b2005-12-15 14:31:24 -08001219 * This is called from our getattr.
1220 */
1221int ocfs2_inode_revalidate(struct dentry *dentry)
1222{
David Howells2b0143b2015-03-17 22:25:59 +00001223 struct inode *inode = d_inode(dentry);
Mark Fashehccd979b2005-12-15 14:31:24 -08001224 int status = 0;
1225
Tao Ma64f3b262011-02-22 22:24:57 +08001226 trace_ocfs2_inode_revalidate(inode,
1227 inode ? (unsigned long long)OCFS2_I(inode)->ip_blkno : 0ULL,
1228 inode ? (unsigned long long)OCFS2_I(inode)->ip_flags : 0);
Mark Fashehccd979b2005-12-15 14:31:24 -08001229
1230 if (!inode) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001231 status = -ENOENT;
1232 goto bail;
1233 }
1234
1235 spin_lock(&OCFS2_I(inode)->ip_lock);
1236 if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED) {
1237 spin_unlock(&OCFS2_I(inode)->ip_lock);
Mark Fashehccd979b2005-12-15 14:31:24 -08001238 status = -ENOENT;
1239 goto bail;
1240 }
1241 spin_unlock(&OCFS2_I(inode)->ip_lock);
1242
Mark Fashehe63aecb62007-10-18 15:30:42 -07001243 /* Let ocfs2_inode_lock do the work of updating our struct
Mark Fashehccd979b2005-12-15 14:31:24 -08001244 * inode for us. */
Mark Fashehe63aecb62007-10-18 15:30:42 -07001245 status = ocfs2_inode_lock(inode, NULL, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -08001246 if (status < 0) {
1247 if (status != -ENOENT)
1248 mlog_errno(status);
1249 goto bail;
1250 }
Mark Fashehe63aecb62007-10-18 15:30:42 -07001251 ocfs2_inode_unlock(inode, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -08001252bail:
Mark Fashehccd979b2005-12-15 14:31:24 -08001253 return status;
1254}
1255
1256/*
1257 * Updates a disk inode from a
1258 * struct inode.
1259 * Only takes ip_lock.
1260 */
Mark Fasheh1fabe142006-10-09 18:11:45 -07001261int ocfs2_mark_inode_dirty(handle_t *handle,
Mark Fashehccd979b2005-12-15 14:31:24 -08001262 struct inode *inode,
1263 struct buffer_head *bh)
1264{
1265 int status;
1266 struct ocfs2_dinode *fe = (struct ocfs2_dinode *) bh->b_data;
1267
Tao Ma64f3b262011-02-22 22:24:57 +08001268 trace_ocfs2_mark_inode_dirty((unsigned long long)OCFS2_I(inode)->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08001269
Joel Becker0cf2f762009-02-12 16:41:25 -08001270 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), bh,
Joel Becker13723d02008-10-17 19:25:01 -07001271 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -08001272 if (status < 0) {
1273 mlog_errno(status);
1274 goto leave;
1275 }
1276
1277 spin_lock(&OCFS2_I(inode)->ip_lock);
1278 fe->i_clusters = cpu_to_le32(OCFS2_I(inode)->ip_clusters);
Jan Kara6e4b0d52007-04-27 11:08:01 -07001279 ocfs2_get_inode_flags(OCFS2_I(inode));
Herbert Poetzlca4d1472006-07-03 17:27:12 -07001280 fe->i_attr = cpu_to_le32(OCFS2_I(inode)->ip_attr);
Mark Fasheh15b1e362007-09-07 13:58:15 -07001281 fe->i_dyn_features = cpu_to_le16(OCFS2_I(inode)->ip_dyn_features);
Mark Fashehccd979b2005-12-15 14:31:24 -08001282 spin_unlock(&OCFS2_I(inode)->ip_lock);
1283
1284 fe->i_size = cpu_to_le64(i_size_read(inode));
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001285 ocfs2_set_links_count(fe, inode->i_nlink);
Eric W. Biederman2c034172013-01-31 17:27:11 -08001286 fe->i_uid = cpu_to_le32(i_uid_read(inode));
1287 fe->i_gid = cpu_to_le32(i_gid_read(inode));
Mark Fashehccd979b2005-12-15 14:31:24 -08001288 fe->i_mode = cpu_to_le16(inode->i_mode);
1289 fe->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
1290 fe->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
1291 fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
1292 fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
1293 fe->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
1294 fe->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
1295
Joel Beckerec20cec2010-03-19 14:13:52 -07001296 ocfs2_journal_dirty(handle, bh);
Darrick J. Wong2931cdc2014-04-03 14:46:48 -07001297 ocfs2_update_inode_fsync_trans(handle, inode, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001298leave:
Mark Fashehccd979b2005-12-15 14:31:24 -08001299 return status;
1300}
1301
1302/*
1303 *
1304 * Updates a struct inode from a disk inode.
1305 * does no i/o, only takes ip_lock.
1306 */
1307void ocfs2_refresh_inode(struct inode *inode,
1308 struct ocfs2_dinode *fe)
1309{
Mark Fashehccd979b2005-12-15 14:31:24 -08001310 spin_lock(&OCFS2_I(inode)->ip_lock);
1311
1312 OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
Herbert Poetzlca4d1472006-07-03 17:27:12 -07001313 OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr);
Mark Fasheh15b1e362007-09-07 13:58:15 -07001314 OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features);
Herbert Poetzlca4d1472006-07-03 17:27:12 -07001315 ocfs2_set_inode_flags(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001316 i_size_write(inode, le64_to_cpu(fe->i_size));
Miklos Szeredibfe86842011-10-28 14:13:29 +02001317 set_nlink(inode, ocfs2_read_links_count(fe));
Eric W. Biederman2c034172013-01-31 17:27:11 -08001318 i_uid_write(inode, le32_to_cpu(fe->i_uid));
1319 i_gid_write(inode, le32_to_cpu(fe->i_gid));
Mark Fashehccd979b2005-12-15 14:31:24 -08001320 inode->i_mode = le16_to_cpu(fe->i_mode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001321 if (S_ISLNK(inode->i_mode) && le32_to_cpu(fe->i_clusters) == 0)
1322 inode->i_blocks = 0;
1323 else
Mark Fasheh8110b072007-03-22 16:53:23 -07001324 inode->i_blocks = ocfs2_inode_sector_count(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001325 inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime);
1326 inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec);
1327 inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime);
1328 inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec);
1329 inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime);
1330 inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec);
1331
1332 spin_unlock(&OCFS2_I(inode)->ip_lock);
1333}
Joel Beckerb657c952008-11-13 14:49:11 -08001334
1335int ocfs2_validate_inode_block(struct super_block *sb,
1336 struct buffer_head *bh)
1337{
Joel Beckerd6b32bb2008-10-17 14:55:01 -07001338 int rc;
Joel Beckerb657c952008-11-13 14:49:11 -08001339 struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data;
1340
Tao Ma64f3b262011-02-22 22:24:57 +08001341 trace_ocfs2_validate_inode_block((unsigned long long)bh->b_blocknr);
Joel Becker970e4932008-11-13 14:49:19 -08001342
Joel Beckerb657c952008-11-13 14:49:11 -08001343 BUG_ON(!buffer_uptodate(bh));
1344
Joel Beckerd6b32bb2008-10-17 14:55:01 -07001345 /*
1346 * If the ecc fails, we return the error but otherwise
1347 * leave the filesystem running. We know any error is
1348 * local to this block.
1349 */
1350 rc = ocfs2_validate_meta_ecc(sb, bh->b_data, &di->i_check);
Joel Becker13723d02008-10-17 19:25:01 -07001351 if (rc) {
1352 mlog(ML_ERROR, "Checksum failed for dinode %llu\n",
1353 (unsigned long long)bh->b_blocknr);
Joel Beckerd6b32bb2008-10-17 14:55:01 -07001354 goto bail;
Joel Becker13723d02008-10-17 19:25:01 -07001355 }
Joel Beckerd6b32bb2008-10-17 14:55:01 -07001356
1357 /*
1358 * Errors after here are fatal.
1359 */
1360
1361 rc = -EINVAL;
1362
Joel Beckerb657c952008-11-13 14:49:11 -08001363 if (!OCFS2_IS_VALID_DINODE(di)) {
Goldwyn Rodrigues17a5b9a2015-09-04 15:44:17 -07001364 rc = ocfs2_error(sb, "Invalid dinode #%llu: signature = %.*s\n",
Joe Perches7ecef142015-09-04 15:44:51 -07001365 (unsigned long long)bh->b_blocknr, 7,
1366 di->i_signature);
Joel Beckerb657c952008-11-13 14:49:11 -08001367 goto bail;
1368 }
1369
1370 if (le64_to_cpu(di->i_blkno) != bh->b_blocknr) {
Goldwyn Rodrigues17a5b9a2015-09-04 15:44:17 -07001371 rc = ocfs2_error(sb, "Invalid dinode #%llu: i_blkno is %llu\n",
Joe Perches7ecef142015-09-04 15:44:51 -07001372 (unsigned long long)bh->b_blocknr,
1373 (unsigned long long)le64_to_cpu(di->i_blkno));
Joel Beckerb657c952008-11-13 14:49:11 -08001374 goto bail;
1375 }
1376
1377 if (!(di->i_flags & cpu_to_le32(OCFS2_VALID_FL))) {
Goldwyn Rodrigues17a5b9a2015-09-04 15:44:17 -07001378 rc = ocfs2_error(sb,
Joe Perches7ecef142015-09-04 15:44:51 -07001379 "Invalid dinode #%llu: OCFS2_VALID_FL not set\n",
1380 (unsigned long long)bh->b_blocknr);
Joel Beckerb657c952008-11-13 14:49:11 -08001381 goto bail;
1382 }
1383
1384 if (le32_to_cpu(di->i_fs_generation) !=
1385 OCFS2_SB(sb)->fs_generation) {
Goldwyn Rodrigues17a5b9a2015-09-04 15:44:17 -07001386 rc = ocfs2_error(sb,
Joe Perches7ecef142015-09-04 15:44:51 -07001387 "Invalid dinode #%llu: fs_generation is %u\n",
1388 (unsigned long long)bh->b_blocknr,
1389 le32_to_cpu(di->i_fs_generation));
Joel Beckerb657c952008-11-13 14:49:11 -08001390 goto bail;
1391 }
1392
1393 rc = 0;
1394
1395bail:
1396 return rc;
1397}
1398
1399int ocfs2_read_inode_block_full(struct inode *inode, struct buffer_head **bh,
1400 int flags)
1401{
1402 int rc;
1403 struct buffer_head *tmp = *bh;
1404
Joel Becker8cb471e2009-02-10 20:00:41 -08001405 rc = ocfs2_read_blocks(INODE_CACHE(inode), OCFS2_I(inode)->ip_blkno,
1406 1, &tmp, flags, ocfs2_validate_inode_block);
Joel Beckerb657c952008-11-13 14:49:11 -08001407
1408 /* If ocfs2_read_blocks() got us a new bh, pass it up. */
Joel Becker970e4932008-11-13 14:49:19 -08001409 if (!rc && !*bh)
Joel Beckerb657c952008-11-13 14:49:11 -08001410 *bh = tmp;
1411
Joel Beckerb657c952008-11-13 14:49:11 -08001412 return rc;
1413}
1414
1415int ocfs2_read_inode_block(struct inode *inode, struct buffer_head **bh)
1416{
1417 return ocfs2_read_inode_block_full(inode, bh, 0);
1418}
Joel Becker6e5a3d72009-02-10 19:00:37 -08001419
Joel Becker6e5a3d72009-02-10 19:00:37 -08001420
1421static u64 ocfs2_inode_cache_owner(struct ocfs2_caching_info *ci)
1422{
1423 struct ocfs2_inode_info *oi = cache_info_to_inode(ci);
1424
1425 return oi->ip_blkno;
1426}
1427
Joel Becker8cb471e2009-02-10 20:00:41 -08001428static struct super_block *ocfs2_inode_cache_get_super(struct ocfs2_caching_info *ci)
1429{
1430 struct ocfs2_inode_info *oi = cache_info_to_inode(ci);
1431
1432 return oi->vfs_inode.i_sb;
1433}
1434
Joel Becker6e5a3d72009-02-10 19:00:37 -08001435static void ocfs2_inode_cache_lock(struct ocfs2_caching_info *ci)
1436{
1437 struct ocfs2_inode_info *oi = cache_info_to_inode(ci);
1438
1439 spin_lock(&oi->ip_lock);
1440}
1441
1442static void ocfs2_inode_cache_unlock(struct ocfs2_caching_info *ci)
1443{
1444 struct ocfs2_inode_info *oi = cache_info_to_inode(ci);
1445
1446 spin_unlock(&oi->ip_lock);
1447}
1448
1449static void ocfs2_inode_cache_io_lock(struct ocfs2_caching_info *ci)
1450{
1451 struct ocfs2_inode_info *oi = cache_info_to_inode(ci);
1452
1453 mutex_lock(&oi->ip_io_mutex);
1454}
1455
1456static void ocfs2_inode_cache_io_unlock(struct ocfs2_caching_info *ci)
1457{
1458 struct ocfs2_inode_info *oi = cache_info_to_inode(ci);
1459
1460 mutex_unlock(&oi->ip_io_mutex);
1461}
1462
1463const struct ocfs2_caching_operations ocfs2_inode_caching_ops = {
1464 .co_owner = ocfs2_inode_cache_owner,
Joel Becker8cb471e2009-02-10 20:00:41 -08001465 .co_get_super = ocfs2_inode_cache_get_super,
Joel Becker6e5a3d72009-02-10 19:00:37 -08001466 .co_cache_lock = ocfs2_inode_cache_lock,
1467 .co_cache_unlock = ocfs2_inode_cache_unlock,
1468 .co_io_lock = ocfs2_inode_cache_io_lock,
1469 .co_io_unlock = ocfs2_inode_cache_io_unlock,
1470};
1471