blob: ddb662b32447ca49cd206c3f4e1394ee558ceeb3 [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 * super.c
5 *
6 * load/unload driver, mount/dismount volumes
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/module.h>
27#include <linux/fs.h>
28#include <linux/types.h>
29#include <linux/slab.h>
30#include <linux/highmem.h>
Mark Fashehccd979b2005-12-15 14:31:24 -080031#include <linux/init.h>
32#include <linux/random.h>
33#include <linux/statfs.h>
34#include <linux/moduleparam.h>
35#include <linux/blkdev.h>
36#include <linux/socket.h>
37#include <linux/inet.h>
38#include <linux/parser.h>
39#include <linux/crc32.h>
40#include <linux/debugfs.h>
Sunil Mushrand5500712007-09-06 13:34:16 -070041#include <linux/mount.h>
Joel Becker6953b4c2008-01-29 16:59:56 -080042#include <linux/seq_file.h>
Jan Kara19ece542008-08-21 20:13:17 +020043#include <linux/quotaops.h>
Dan Magenheimer1cfd8bd2011-05-26 10:02:08 -060044#include <linux/cleancache.h>
Mark Fashehccd979b2005-12-15 14:31:24 -080045
Wengang Wang80a9a842011-02-21 11:13:14 +080046#define CREATE_TRACE_POINTS
47#include "ocfs2_trace.h"
48
Mark Fashehccd979b2005-12-15 14:31:24 -080049#include <cluster/masklog.h>
50
51#include "ocfs2.h"
52
53/* this should be the only file to include a version 1 header */
54#include "ocfs1_fs_compat.h"
55
56#include "alloc.h"
Mark Fasheha11f7e62011-06-22 14:23:38 -070057#include "aops.h"
Joel Beckerd030cc92008-12-11 15:04:14 -080058#include "blockcheck.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080059#include "dlmglue.h"
60#include "export.h"
61#include "extent_map.h"
62#include "heartbeat.h"
63#include "inode.h"
64#include "journal.h"
65#include "localalloc.h"
66#include "namei.h"
67#include "slot_map.h"
68#include "super.h"
69#include "sysfile.h"
70#include "uptodate.h"
Tiger Yangcf1d6c72008-08-18 17:11:00 +080071#include "xattr.h"
Jan Kara9e33d692008-08-25 19:56:50 +020072#include "quota.h"
Tao Ma374a2632009-08-24 11:13:37 +080073#include "refcounttree.h"
Tiger Yangb89c5422010-01-25 14:11:06 +080074#include "suballoc.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080075
76#include "buffer_head_io.h"
77
Fabian Frederick1a5c4e22014-06-04 16:06:06 -070078static struct kmem_cache *ocfs2_inode_cachep;
Jan Kara9e33d692008-08-25 19:56:50 +020079struct kmem_cache *ocfs2_dquot_cachep;
80struct kmem_cache *ocfs2_qf_chunk_cachep;
Mark Fashehccd979b2005-12-15 14:31:24 -080081
Lucas De Marchi25985ed2011-03-30 22:57:33 -030082/* OCFS2 needs to schedule several different types of work which
Mark Fashehccd979b2005-12-15 14:31:24 -080083 * require cluster locking, disk I/O, recovery waits, etc. Since these
84 * types of work tend to be heavy we avoid using the kernel events
85 * workqueue and schedule on our own. */
86struct workqueue_struct *ocfs2_wq = NULL;
87
Fabian Frederick1a5c4e22014-06-04 16:06:06 -070088static struct dentry *ocfs2_debugfs_root;
Mark Fashehccd979b2005-12-15 14:31:24 -080089
90MODULE_AUTHOR("Oracle");
91MODULE_LICENSE("GPL");
Goldwyn Rodriguesff8fb332014-01-21 15:48:20 -080092MODULE_DESCRIPTION("OCFS2 cluster file system");
Mark Fashehccd979b2005-12-15 14:31:24 -080093
Tiger Yangc0123ad2007-09-08 00:16:10 +080094struct mount_options
95{
Mark Fashehd147b3d2007-11-07 14:40:36 -080096 unsigned long commit_interval;
Tiger Yangc0123ad2007-09-08 00:16:10 +080097 unsigned long mount_opt;
98 unsigned int atime_quantum;
99 signed short slot;
Mark Fasheh73c8a802010-04-05 18:17:13 -0700100 int localalloc_opt;
Mark Fashehd02f00c2009-12-07 13:10:48 -0800101 unsigned int resv_level;
Mark Fasheh83f92312010-04-05 18:17:16 -0700102 int dir_resv_level;
Joel Beckerb61817e2008-02-01 15:08:23 -0800103 char cluster_stack[OCFS2_STACK_LABEL_LEN + 1];
Tiger Yangc0123ad2007-09-08 00:16:10 +0800104};
105
Mark Fashehccd979b2005-12-15 14:31:24 -0800106static int ocfs2_parse_options(struct super_block *sb, char *options,
Tiger Yangc0123ad2007-09-08 00:16:10 +0800107 struct mount_options *mopt,
Sunil Mushranbaf46612007-06-18 17:00:24 -0700108 int is_remount);
Jan Kara5297aad2009-10-15 14:54:04 +0200109static int ocfs2_check_set_options(struct super_block *sb,
110 struct mount_options *options);
Al Viro34c80b12011-12-08 21:32:45 -0500111static int ocfs2_show_options(struct seq_file *s, struct dentry *root);
Mark Fashehccd979b2005-12-15 14:31:24 -0800112static void ocfs2_put_super(struct super_block *sb);
113static int ocfs2_mount_volume(struct super_block *sb);
114static int ocfs2_remount(struct super_block *sb, int *flags, char *data);
115static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err);
116static int ocfs2_initialize_mem_caches(void);
117static void ocfs2_free_mem_caches(void);
118static void ocfs2_delete_osb(struct ocfs2_super *osb);
119
David Howells726c3342006-06-23 02:02:58 -0700120static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf);
Mark Fashehccd979b2005-12-15 14:31:24 -0800121
122static int ocfs2_sync_fs(struct super_block *sb, int wait);
123
124static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb);
125static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb);
Denis Chengbddb8eb32007-09-27 02:10:04 +0800126static void ocfs2_release_system_inodes(struct ocfs2_super *osb);
Mark Fashehccd979b2005-12-15 14:31:24 -0800127static int ocfs2_check_volume(struct ocfs2_super *osb);
128static int ocfs2_verify_volume(struct ocfs2_dinode *di,
129 struct buffer_head *bh,
Joel Becker73be1922009-01-06 14:57:08 -0800130 u32 sectsize,
131 struct ocfs2_blockcheck_stats *stats);
Mark Fashehccd979b2005-12-15 14:31:24 -0800132static int ocfs2_initialize_super(struct super_block *sb,
133 struct buffer_head *bh,
Joel Becker73be1922009-01-06 14:57:08 -0800134 int sector_size,
135 struct ocfs2_blockcheck_stats *stats);
Mark Fashehccd979b2005-12-15 14:31:24 -0800136static int ocfs2_get_sector(struct super_block *sb,
137 struct buffer_head **bh,
138 int block,
139 int sect_size);
Mark Fashehccd979b2005-12-15 14:31:24 -0800140static struct inode *ocfs2_alloc_inode(struct super_block *sb);
141static void ocfs2_destroy_inode(struct inode *inode);
Jan Kara19ece542008-08-21 20:13:17 +0200142static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend);
143static int ocfs2_enable_quotas(struct ocfs2_super *osb);
144static void ocfs2_disable_quotas(struct ocfs2_super *osb);
Mark Fashehccd979b2005-12-15 14:31:24 -0800145
Josef 'Jeff' Sipekee9b6d62007-02-12 00:55:41 -0800146static const struct super_operations ocfs2_sops = {
Mark Fashehccd979b2005-12-15 14:31:24 -0800147 .statfs = ocfs2_statfs,
148 .alloc_inode = ocfs2_alloc_inode,
149 .destroy_inode = ocfs2_destroy_inode,
150 .drop_inode = ocfs2_drop_inode,
Al Viro066d92d2010-06-08 21:28:10 -0400151 .evict_inode = ocfs2_evict_inode,
Mark Fashehccd979b2005-12-15 14:31:24 -0800152 .sync_fs = ocfs2_sync_fs,
Mark Fashehccd979b2005-12-15 14:31:24 -0800153 .put_super = ocfs2_put_super,
154 .remount_fs = ocfs2_remount,
Sunil Mushrand5500712007-09-06 13:34:16 -0700155 .show_options = ocfs2_show_options,
Jan Kara9e33d692008-08-25 19:56:50 +0200156 .quota_read = ocfs2_quota_read,
157 .quota_write = ocfs2_quota_write,
Mark Fashehccd979b2005-12-15 14:31:24 -0800158};
159
160enum {
161 Opt_barrier,
162 Opt_err_panic,
163 Opt_err_ro,
164 Opt_intr,
165 Opt_nointr,
166 Opt_hb_none,
167 Opt_hb_local,
Sunil Mushran2c442712010-10-07 15:23:50 -0700168 Opt_hb_global,
Mark Fashehccd979b2005-12-15 14:31:24 -0800169 Opt_data_ordered,
170 Opt_data_writeback,
Tiger Yang7f1a37e2006-11-15 15:48:42 +0800171 Opt_atime_quantum,
Sunil Mushranbaf46612007-06-18 17:00:24 -0700172 Opt_slot,
Mark Fashehd147b3d2007-11-07 14:40:36 -0800173 Opt_commit,
Sunil Mushran2fbe8d12007-12-20 14:58:11 -0800174 Opt_localalloc,
Mark Fasheh53fc6222007-12-20 16:49:04 -0800175 Opt_localflocks,
Joel Beckerb61817e2008-02-01 15:08:23 -0800176 Opt_stack,
Tiger Yangcf1d6c72008-08-18 17:11:00 +0800177 Opt_user_xattr,
178 Opt_nouser_xattr,
Joel Becker12462f12008-09-03 20:03:40 -0700179 Opt_inode64,
Tiger Yanga68979b2008-11-14 11:17:52 +0800180 Opt_acl,
181 Opt_noacl,
Jan Kara19ece542008-08-21 20:13:17 +0200182 Opt_usrquota,
183 Opt_grpquota,
Tristan Ye7bdb0d12010-10-11 16:46:39 +0800184 Opt_coherency_buffered,
185 Opt_coherency_full,
Mark Fashehd02f00c2009-12-07 13:10:48 -0800186 Opt_resv_level,
Mark Fasheh83f92312010-04-05 18:17:16 -0700187 Opt_dir_resv_level,
Mark Fashehccd979b2005-12-15 14:31:24 -0800188 Opt_err,
189};
190
Steven Whitehousea447c092008-10-13 10:46:57 +0100191static const match_table_t tokens = {
Mark Fashehccd979b2005-12-15 14:31:24 -0800192 {Opt_barrier, "barrier=%u"},
193 {Opt_err_panic, "errors=panic"},
194 {Opt_err_ro, "errors=remount-ro"},
195 {Opt_intr, "intr"},
196 {Opt_nointr, "nointr"},
197 {Opt_hb_none, OCFS2_HB_NONE},
198 {Opt_hb_local, OCFS2_HB_LOCAL},
Sunil Mushran2c442712010-10-07 15:23:50 -0700199 {Opt_hb_global, OCFS2_HB_GLOBAL},
Mark Fashehccd979b2005-12-15 14:31:24 -0800200 {Opt_data_ordered, "data=ordered"},
201 {Opt_data_writeback, "data=writeback"},
Tiger Yang7f1a37e2006-11-15 15:48:42 +0800202 {Opt_atime_quantum, "atime_quantum=%u"},
Sunil Mushranbaf46612007-06-18 17:00:24 -0700203 {Opt_slot, "preferred_slot=%u"},
Mark Fashehd147b3d2007-11-07 14:40:36 -0800204 {Opt_commit, "commit=%u"},
Sunil Mushran2fbe8d12007-12-20 14:58:11 -0800205 {Opt_localalloc, "localalloc=%d"},
Mark Fasheh53fc6222007-12-20 16:49:04 -0800206 {Opt_localflocks, "localflocks"},
Joel Beckerb61817e2008-02-01 15:08:23 -0800207 {Opt_stack, "cluster_stack=%s"},
Tiger Yangcf1d6c72008-08-18 17:11:00 +0800208 {Opt_user_xattr, "user_xattr"},
209 {Opt_nouser_xattr, "nouser_xattr"},
Joel Becker12462f12008-09-03 20:03:40 -0700210 {Opt_inode64, "inode64"},
Tiger Yanga68979b2008-11-14 11:17:52 +0800211 {Opt_acl, "acl"},
212 {Opt_noacl, "noacl"},
Jan Kara19ece542008-08-21 20:13:17 +0200213 {Opt_usrquota, "usrquota"},
214 {Opt_grpquota, "grpquota"},
Tristan Ye7bdb0d12010-10-11 16:46:39 +0800215 {Opt_coherency_buffered, "coherency=buffered"},
216 {Opt_coherency_full, "coherency=full"},
Mark Fashehd02f00c2009-12-07 13:10:48 -0800217 {Opt_resv_level, "resv_level=%u"},
Mark Fasheh83f92312010-04-05 18:17:16 -0700218 {Opt_dir_resv_level, "dir_resv_level=%u"},
Mark Fashehccd979b2005-12-15 14:31:24 -0800219 {Opt_err, NULL}
220};
221
Sunil Mushran50397502008-12-17 14:17:43 -0800222#ifdef CONFIG_DEBUG_FS
223static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len)
224{
Sunil Mushran50397502008-12-17 14:17:43 -0800225 struct ocfs2_cluster_connection *cconn = osb->cconn;
226 struct ocfs2_recovery_map *rm = osb->recovery_map;
Sunil Mushrandf152c22009-06-22 11:40:07 -0700227 struct ocfs2_orphan_scan *os = &osb->osb_orphan_scan;
228 int i, out = 0;
Sunil Mushran50397502008-12-17 14:17:43 -0800229
230 out += snprintf(buf + out, len - out,
231 "%10s => Id: %-s Uuid: %-s Gen: 0x%X Label: %-s\n",
232 "Device", osb->dev_str, osb->uuid_str,
233 osb->fs_generation, osb->vol_label);
234
235 out += snprintf(buf + out, len - out,
236 "%10s => State: %d Flags: 0x%lX\n", "Volume",
237 atomic_read(&osb->vol_state), osb->osb_flags);
238
239 out += snprintf(buf + out, len - out,
240 "%10s => Block: %lu Cluster: %d\n", "Sizes",
241 osb->sb->s_blocksize, osb->s_clustersize);
242
243 out += snprintf(buf + out, len - out,
244 "%10s => Compat: 0x%X Incompat: 0x%X "
245 "ROcompat: 0x%X\n",
246 "Features", osb->s_feature_compat,
247 osb->s_feature_incompat, osb->s_feature_ro_compat);
248
249 out += snprintf(buf + out, len - out,
250 "%10s => Opts: 0x%lX AtimeQuanta: %u\n", "Mount",
251 osb->s_mount_opt, osb->s_atime_quantum);
252
Sunil Mushranc3d38842009-06-19 14:45:55 -0700253 if (cconn) {
254 out += snprintf(buf + out, len - out,
255 "%10s => Stack: %s Name: %*s "
256 "Version: %d.%d\n", "Cluster",
257 (*osb->osb_cluster_stack == '\0' ?
258 "o2cb" : osb->osb_cluster_stack),
259 cconn->cc_namelen, cconn->cc_name,
260 cconn->cc_version.pv_major,
261 cconn->cc_version.pv_minor);
262 }
Sunil Mushran50397502008-12-17 14:17:43 -0800263
264 spin_lock(&osb->dc_task_lock);
265 out += snprintf(buf + out, len - out,
266 "%10s => Pid: %d Count: %lu WakeSeq: %lu "
267 "WorkSeq: %lu\n", "DownCnvt",
Sunil Mushranc3d38842009-06-19 14:45:55 -0700268 (osb->dc_task ? task_pid_nr(osb->dc_task) : -1),
269 osb->blocked_lock_count, osb->dc_wake_sequence,
270 osb->dc_work_sequence);
Sunil Mushran50397502008-12-17 14:17:43 -0800271 spin_unlock(&osb->dc_task_lock);
272
273 spin_lock(&osb->osb_lock);
274 out += snprintf(buf + out, len - out, "%10s => Pid: %d Nodes:",
275 "Recovery",
276 (osb->recovery_thread_task ?
277 task_pid_nr(osb->recovery_thread_task) : -1));
278 if (rm->rm_used == 0)
279 out += snprintf(buf + out, len - out, " None\n");
280 else {
281 for (i = 0; i < rm->rm_used; i++)
282 out += snprintf(buf + out, len - out, " %d",
283 rm->rm_entries[i]);
284 out += snprintf(buf + out, len - out, "\n");
285 }
286 spin_unlock(&osb->osb_lock);
287
288 out += snprintf(buf + out, len - out,
Goldwyn Rodrigues8fa9d172013-07-03 15:00:51 -0700289 "%10s => Pid: %d Interval: %lu\n", "Commit",
Sunil Mushranc3d38842009-06-19 14:45:55 -0700290 (osb->commit_task ? task_pid_nr(osb->commit_task) : -1),
Goldwyn Rodrigues8fa9d172013-07-03 15:00:51 -0700291 osb->osb_commit_interval);
Sunil Mushran50397502008-12-17 14:17:43 -0800292
293 out += snprintf(buf + out, len - out,
Sunil Mushranc3d38842009-06-19 14:45:55 -0700294 "%10s => State: %d TxnId: %lu NumTxns: %d\n",
Sunil Mushran50397502008-12-17 14:17:43 -0800295 "Journal", osb->journal->j_state,
Sunil Mushranc3d38842009-06-19 14:45:55 -0700296 osb->journal->j_trans_id,
297 atomic_read(&osb->journal->j_num_trans));
Sunil Mushran50397502008-12-17 14:17:43 -0800298
299 out += snprintf(buf + out, len - out,
300 "%10s => GlobalAllocs: %d LocalAllocs: %d "
301 "SubAllocs: %d LAWinMoves: %d SAExtends: %d\n",
302 "Stats",
303 atomic_read(&osb->alloc_stats.bitmap_data),
304 atomic_read(&osb->alloc_stats.local_data),
305 atomic_read(&osb->alloc_stats.bg_allocs),
306 atomic_read(&osb->alloc_stats.moves),
307 atomic_read(&osb->alloc_stats.bg_extends));
308
309 out += snprintf(buf + out, len - out,
310 "%10s => State: %u Descriptor: %llu Size: %u bits "
311 "Default: %u bits\n",
312 "LocalAlloc", osb->local_alloc_state,
313 (unsigned long long)osb->la_last_gd,
314 osb->local_alloc_bits, osb->local_alloc_default_bits);
315
316 spin_lock(&osb->osb_lock);
317 out += snprintf(buf + out, len - out,
Tiger Yangb89c5422010-01-25 14:11:06 +0800318 "%10s => InodeSlot: %d StolenInodes: %d, "
319 "MetaSlot: %d StolenMeta: %d\n", "Steal",
Sunil Mushran50397502008-12-17 14:17:43 -0800320 osb->s_inode_steal_slot,
Tiger Yangb89c5422010-01-25 14:11:06 +0800321 atomic_read(&osb->s_num_inodes_stolen),
322 osb->s_meta_steal_slot,
323 atomic_read(&osb->s_num_meta_stolen));
Sunil Mushran50397502008-12-17 14:17:43 -0800324 spin_unlock(&osb->osb_lock);
325
Sunil Mushrandf152c22009-06-22 11:40:07 -0700326 out += snprintf(buf + out, len - out, "OrphanScan => ");
327 out += snprintf(buf + out, len - out, "Local: %u Global: %u ",
328 os->os_count, os->os_seqno);
329 out += snprintf(buf + out, len - out, " Last Scan: ");
330 if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE)
331 out += snprintf(buf + out, len - out, "Disabled\n");
332 else
333 out += snprintf(buf + out, len - out, "%lu seconds ago\n",
334 (get_seconds() - os->os_scantime.tv_sec));
335
Sunil Mushran50397502008-12-17 14:17:43 -0800336 out += snprintf(buf + out, len - out, "%10s => %3s %10s\n",
337 "Slots", "Num", "RecoGen");
Sunil Mushran50397502008-12-17 14:17:43 -0800338 for (i = 0; i < osb->max_slots; ++i) {
339 out += snprintf(buf + out, len - out,
340 "%10s %c %3d %10d\n",
341 " ",
342 (i == osb->slot_num ? '*' : ' '),
343 i, osb->slot_recovery_generations[i]);
344 }
345
346 return out;
347}
348
349static int ocfs2_osb_debug_open(struct inode *inode, struct file *file)
350{
351 struct ocfs2_super *osb = inode->i_private;
352 char *buf = NULL;
353
354 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
355 if (!buf)
356 goto bail;
357
358 i_size_write(inode, ocfs2_osb_dump(osb, buf, PAGE_SIZE));
359
360 file->private_data = buf;
361
362 return 0;
363bail:
364 return -ENOMEM;
365}
366
367static int ocfs2_debug_release(struct inode *inode, struct file *file)
368{
369 kfree(file->private_data);
370 return 0;
371}
372
373static ssize_t ocfs2_debug_read(struct file *file, char __user *buf,
374 size_t nbytes, loff_t *ppos)
375{
376 return simple_read_from_buffer(buf, nbytes, ppos, file->private_data,
377 i_size_read(file->f_mapping->host));
378}
379#else
380static int ocfs2_osb_debug_open(struct inode *inode, struct file *file)
381{
382 return 0;
383}
384static int ocfs2_debug_release(struct inode *inode, struct file *file)
385{
386 return 0;
387}
388static ssize_t ocfs2_debug_read(struct file *file, char __user *buf,
389 size_t nbytes, loff_t *ppos)
390{
391 return 0;
392}
393#endif /* CONFIG_DEBUG_FS */
394
Alexey Dobriyan828c0952009-10-01 15:43:56 -0700395static const struct file_operations ocfs2_osb_debug_fops = {
Sunil Mushran50397502008-12-17 14:17:43 -0800396 .open = ocfs2_osb_debug_open,
397 .release = ocfs2_debug_release,
398 .read = ocfs2_debug_read,
399 .llseek = generic_file_llseek,
400};
401
Mark Fashehccd979b2005-12-15 14:31:24 -0800402static int ocfs2_sync_fs(struct super_block *sb, int wait)
403{
Denis Chengbddb8eb32007-09-27 02:10:04 +0800404 int status;
Mark Fashehccd979b2005-12-15 14:31:24 -0800405 tid_t target;
406 struct ocfs2_super *osb = OCFS2_SB(sb);
407
Mark Fashehccd979b2005-12-15 14:31:24 -0800408 if (ocfs2_is_hard_readonly(osb))
409 return -EROFS;
410
411 if (wait) {
412 status = ocfs2_flush_truncate_log(osb);
413 if (status < 0)
414 mlog_errno(status);
415 } else {
416 ocfs2_schedule_truncate_log_flush(osb, 0);
417 }
418
Joel Becker2b4e30f2008-09-03 20:03:41 -0700419 if (jbd2_journal_start_commit(OCFS2_SB(sb)->journal->j_journal,
420 &target)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800421 if (wait)
Joel Becker2b4e30f2008-09-03 20:03:41 -0700422 jbd2_log_wait_commit(OCFS2_SB(sb)->journal->j_journal,
423 target);
Mark Fashehccd979b2005-12-15 14:31:24 -0800424 }
425 return 0;
426}
427
Jan Kara1a224ad2008-08-20 15:43:36 +0200428static int ocfs2_need_system_inode(struct ocfs2_super *osb, int ino)
429{
430 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_USRQUOTA)
431 && (ino == USER_QUOTA_SYSTEM_INODE
432 || ino == LOCAL_USER_QUOTA_SYSTEM_INODE))
433 return 0;
434 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)
435 && (ino == GROUP_QUOTA_SYSTEM_INODE
436 || ino == LOCAL_GROUP_QUOTA_SYSTEM_INODE))
437 return 0;
438 return 1;
439}
440
Mark Fashehccd979b2005-12-15 14:31:24 -0800441static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb)
442{
443 struct inode *new = NULL;
444 int status = 0;
445 int i;
446
Jan Kara5fa06132008-01-11 00:11:45 +0100447 new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -0800448 if (IS_ERR(new)) {
449 status = PTR_ERR(new);
450 mlog_errno(status);
451 goto bail;
452 }
453 osb->root_inode = new;
454
Jan Kara5fa06132008-01-11 00:11:45 +0100455 new = ocfs2_iget(osb, osb->system_dir_blkno, OCFS2_FI_FLAG_SYSFILE, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -0800456 if (IS_ERR(new)) {
457 status = PTR_ERR(new);
458 mlog_errno(status);
459 goto bail;
460 }
461 osb->sys_root_inode = new;
462
463 for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE;
464 i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) {
Jan Kara1a224ad2008-08-20 15:43:36 +0200465 if (!ocfs2_need_system_inode(osb, i))
466 continue;
Mark Fashehccd979b2005-12-15 14:31:24 -0800467 new = ocfs2_get_system_file_inode(osb, i, osb->slot_num);
468 if (!new) {
469 ocfs2_release_system_inodes(osb);
470 status = -EINVAL;
471 mlog_errno(status);
472 /* FIXME: Should ERROR_RO_FS */
473 mlog(ML_ERROR, "Unable to load system inode %d, "
474 "possibly corrupt fs?", i);
475 goto bail;
476 }
477 // the array now has one ref, so drop this one
478 iput(new);
479 }
480
481bail:
Tao Mac1e8d352011-03-07 16:43:21 +0800482 if (status)
483 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -0800484 return status;
485}
486
487static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb)
488{
489 struct inode *new = NULL;
490 int status = 0;
491 int i;
492
Mark Fashehccd979b2005-12-15 14:31:24 -0800493 for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1;
494 i < NUM_SYSTEM_INODES;
495 i++) {
Jan Kara1a224ad2008-08-20 15:43:36 +0200496 if (!ocfs2_need_system_inode(osb, i))
497 continue;
Mark Fashehccd979b2005-12-15 14:31:24 -0800498 new = ocfs2_get_system_file_inode(osb, i, osb->slot_num);
499 if (!new) {
500 ocfs2_release_system_inodes(osb);
501 status = -EINVAL;
502 mlog(ML_ERROR, "status=%d, sysfile=%d, slot=%d\n",
503 status, i, osb->slot_num);
504 goto bail;
505 }
506 /* the array now has one ref, so drop this one */
507 iput(new);
508 }
509
510bail:
Tao Mac1e8d352011-03-07 16:43:21 +0800511 if (status)
512 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -0800513 return status;
514}
515
Denis Chengbddb8eb32007-09-27 02:10:04 +0800516static void ocfs2_release_system_inodes(struct ocfs2_super *osb)
Mark Fashehccd979b2005-12-15 14:31:24 -0800517{
Denis Chengbddb8eb32007-09-27 02:10:04 +0800518 int i;
Mark Fashehccd979b2005-12-15 14:31:24 -0800519 struct inode *inode;
520
Tao Mab4d693f2010-08-16 16:58:21 +0800521 for (i = 0; i < NUM_GLOBAL_SYSTEM_INODES; i++) {
522 inode = osb->global_system_inodes[i];
Mark Fashehccd979b2005-12-15 14:31:24 -0800523 if (inode) {
524 iput(inode);
Tao Mab4d693f2010-08-16 16:58:21 +0800525 osb->global_system_inodes[i] = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800526 }
527 }
528
529 inode = osb->sys_root_inode;
530 if (inode) {
531 iput(inode);
532 osb->sys_root_inode = NULL;
533 }
534
535 inode = osb->root_inode;
536 if (inode) {
537 iput(inode);
538 osb->root_inode = NULL;
539 }
540
Tao Mab4d693f2010-08-16 16:58:21 +0800541 if (!osb->local_system_inodes)
Tao Mac1e8d352011-03-07 16:43:21 +0800542 return;
Tao Mab4d693f2010-08-16 16:58:21 +0800543
544 for (i = 0; i < NUM_LOCAL_SYSTEM_INODES * osb->max_slots; i++) {
545 if (osb->local_system_inodes[i]) {
546 iput(osb->local_system_inodes[i]);
547 osb->local_system_inodes[i] = NULL;
548 }
549 }
550
551 kfree(osb->local_system_inodes);
552 osb->local_system_inodes = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800553}
554
555/* We're allocating fs objects, use GFP_NOFS */
556static struct inode *ocfs2_alloc_inode(struct super_block *sb)
557{
558 struct ocfs2_inode_info *oi;
559
Christoph Lametere6b4f8d2006-12-06 20:33:14 -0800560 oi = kmem_cache_alloc(ocfs2_inode_cachep, GFP_NOFS);
Mark Fashehccd979b2005-12-15 14:31:24 -0800561 if (!oi)
562 return NULL;
563
Darrick J. Wong2931cdc2014-04-03 14:46:48 -0700564 oi->i_sync_tid = 0;
565 oi->i_datasync_tid = 0;
566
Joel Becker2b4e30f2008-09-03 20:03:41 -0700567 jbd2_journal_init_jbd_inode(&oi->ip_jinode, &oi->vfs_inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800568 return &oi->vfs_inode;
569}
570
Nick Pigginfa0d7e3d2011-01-07 17:49:49 +1100571static void ocfs2_i_callback(struct rcu_head *head)
572{
573 struct inode *inode = container_of(head, struct inode, i_rcu);
Nick Pigginfa0d7e3d2011-01-07 17:49:49 +1100574 kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode));
575}
576
Mark Fashehccd979b2005-12-15 14:31:24 -0800577static void ocfs2_destroy_inode(struct inode *inode)
578{
Nick Pigginfa0d7e3d2011-01-07 17:49:49 +1100579 call_rcu(&inode->i_rcu, ocfs2_i_callback);
Mark Fashehccd979b2005-12-15 14:31:24 -0800580}
581
Mark Fasheh5a254032007-07-20 12:56:16 -0700582static unsigned long long ocfs2_max_file_offset(unsigned int bbits,
583 unsigned int cbits)
Mark Fashehccd979b2005-12-15 14:31:24 -0800584{
Mark Fasheh5a254032007-07-20 12:56:16 -0700585 unsigned int bytes = 1 << cbits;
586 unsigned int trim = bytes;
587 unsigned int bitshift = 32;
Mark Fashehccd979b2005-12-15 14:31:24 -0800588
Mark Fasheh5a254032007-07-20 12:56:16 -0700589 /*
590 * i_size and all block offsets in ocfs2 are always 64 bits
591 * wide. i_clusters is 32 bits, in cluster-sized units. So on
592 * 64 bit platforms, cluster size will be the limiting factor.
Mark Fashehccd979b2005-12-15 14:31:24 -0800593 */
594
595#if BITS_PER_LONG == 32
Bartlomiej Zolnierkiewicz90c699a2009-06-19 08:08:50 +0200596# if defined(CONFIG_LBDAF)
Alexey Dobriyan2ecd05a2006-10-11 01:22:05 -0700597 BUILD_BUG_ON(sizeof(sector_t) != 8);
Mark Fasheh5a254032007-07-20 12:56:16 -0700598 /*
599 * We might be limited by page cache size.
600 */
601 if (bytes > PAGE_CACHE_SIZE) {
602 bytes = PAGE_CACHE_SIZE;
603 trim = 1;
604 /*
605 * Shift by 31 here so that we don't get larger than
606 * MAX_LFS_FILESIZE
607 */
608 bitshift = 31;
609 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800610# else
Mark Fasheh5a254032007-07-20 12:56:16 -0700611 /*
612 * We are limited by the size of sector_t. Use block size, as
613 * that's what we expose to the VFS.
614 */
615 bytes = 1 << bbits;
616 trim = 1;
617 bitshift = 31;
Mark Fashehccd979b2005-12-15 14:31:24 -0800618# endif
619#endif
620
Mark Fasheh5a254032007-07-20 12:56:16 -0700621 /*
622 * Trim by a whole cluster when we can actually approach the
623 * on-disk limits. Otherwise we can overflow i_clusters when
624 * an extent start is at the max offset.
625 */
626 return (((unsigned long long)bytes) << bitshift) - trim;
Mark Fashehccd979b2005-12-15 14:31:24 -0800627}
628
629static int ocfs2_remount(struct super_block *sb, int *flags, char *data)
630{
631 int incompat_features;
632 int ret = 0;
Tiger Yangc0123ad2007-09-08 00:16:10 +0800633 struct mount_options parsed_options;
Mark Fashehccd979b2005-12-15 14:31:24 -0800634 struct ocfs2_super *osb = OCFS2_SB(sb);
Sunil Mushran2c442712010-10-07 15:23:50 -0700635 u32 tmp;
Mark Fashehccd979b2005-12-15 14:31:24 -0800636
Theodore Ts'o02b99842014-03-13 10:14:33 -0400637 sync_filesystem(sb);
638
Jan Kara5297aad2009-10-15 14:54:04 +0200639 if (!ocfs2_parse_options(sb, data, &parsed_options, 1) ||
640 !ocfs2_check_set_options(sb, &parsed_options)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800641 ret = -EINVAL;
642 goto out;
643 }
644
Sunil Mushran2c442712010-10-07 15:23:50 -0700645 tmp = OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL |
646 OCFS2_MOUNT_HB_NONE;
647 if ((osb->s_mount_opt & tmp) != (parsed_options.mount_opt & tmp)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800648 ret = -EINVAL;
649 mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n");
650 goto out;
651 }
652
653 if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) !=
Tiger Yangc0123ad2007-09-08 00:16:10 +0800654 (parsed_options.mount_opt & OCFS2_MOUNT_DATA_WRITEBACK)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800655 ret = -EINVAL;
656 mlog(ML_ERROR, "Cannot change data mode on remount\n");
657 goto out;
658 }
659
Joel Becker12462f12008-09-03 20:03:40 -0700660 /* Probably don't want this on remount; it might
661 * mess with other nodes */
662 if (!(osb->s_mount_opt & OCFS2_MOUNT_INODE64) &&
663 (parsed_options.mount_opt & OCFS2_MOUNT_INODE64)) {
664 ret = -EINVAL;
665 mlog(ML_ERROR, "Cannot enable inode64 on remount\n");
666 goto out;
667 }
668
Mark Fashehccd979b2005-12-15 14:31:24 -0800669 /* We're going to/from readonly mode. */
670 if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
Jan Kara19ece542008-08-21 20:13:17 +0200671 /* Disable quota accounting before remounting RO */
672 if (*flags & MS_RDONLY) {
673 ret = ocfs2_susp_quotas(osb, 0);
674 if (ret < 0)
675 goto out;
676 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800677 /* Lock here so the check of HARD_RO and the potential
678 * setting of SOFT_RO is atomic. */
679 spin_lock(&osb->osb_lock);
680 if (osb->osb_flags & OCFS2_OSB_HARD_RO) {
681 mlog(ML_ERROR, "Remount on readonly device is forbidden.\n");
682 ret = -EROFS;
683 goto unlock_osb;
684 }
685
686 if (*flags & MS_RDONLY) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800687 sb->s_flags |= MS_RDONLY;
688 osb->osb_flags |= OCFS2_OSB_SOFT_RO;
689 } else {
Mark Fashehccd979b2005-12-15 14:31:24 -0800690 if (osb->osb_flags & OCFS2_OSB_ERROR_FS) {
691 mlog(ML_ERROR, "Cannot remount RDWR "
692 "filesystem due to previous errors.\n");
693 ret = -EROFS;
694 goto unlock_osb;
695 }
696 incompat_features = OCFS2_HAS_RO_COMPAT_FEATURE(sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP);
697 if (incompat_features) {
698 mlog(ML_ERROR, "Cannot remount RDWR because "
699 "of unsupported optional features "
700 "(%x).\n", incompat_features);
701 ret = -EINVAL;
702 goto unlock_osb;
703 }
704 sb->s_flags &= ~MS_RDONLY;
705 osb->osb_flags &= ~OCFS2_OSB_SOFT_RO;
706 }
Tao Ma32a42d32011-02-23 21:29:08 +0800707 trace_ocfs2_remount(sb->s_flags, osb->osb_flags, *flags);
Mark Fashehccd979b2005-12-15 14:31:24 -0800708unlock_osb:
709 spin_unlock(&osb->osb_lock);
Jan Kara19ece542008-08-21 20:13:17 +0200710 /* Enable quota accounting after remounting RW */
711 if (!ret && !(*flags & MS_RDONLY)) {
712 if (sb_any_quota_suspended(sb))
713 ret = ocfs2_susp_quotas(osb, 1);
714 else
715 ret = ocfs2_enable_quotas(osb);
716 if (ret < 0) {
717 /* Return back changes... */
718 spin_lock(&osb->osb_lock);
719 sb->s_flags |= MS_RDONLY;
720 osb->osb_flags |= OCFS2_OSB_SOFT_RO;
721 spin_unlock(&osb->osb_lock);
722 goto out;
723 }
724 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800725 }
726
727 if (!ret) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800728 /* Only save off the new mount options in case of a successful
729 * remount. */
Tiger Yangc0123ad2007-09-08 00:16:10 +0800730 osb->s_mount_opt = parsed_options.mount_opt;
731 osb->s_atime_quantum = parsed_options.atime_quantum;
732 osb->preferred_slot = parsed_options.slot;
Mark Fashehd147b3d2007-11-07 14:40:36 -0800733 if (parsed_options.commit_interval)
734 osb->osb_commit_interval = parsed_options.commit_interval;
Mark Fashehe001e792007-11-07 14:21:45 -0800735
736 if (!ocfs2_is_hard_readonly(osb))
737 ocfs2_set_journal_params(osb);
Jan Kara57b09bb2009-10-15 14:54:05 +0200738
739 sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
740 ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ?
741 MS_POSIXACL : 0);
Mark Fashehccd979b2005-12-15 14:31:24 -0800742 }
743out:
744 return ret;
745}
746
747static int ocfs2_sb_probe(struct super_block *sb,
748 struct buffer_head **bh,
Joel Becker73be1922009-01-06 14:57:08 -0800749 int *sector_size,
750 struct ocfs2_blockcheck_stats *stats)
Mark Fashehccd979b2005-12-15 14:31:24 -0800751{
Denis Chengbddb8eb32007-09-27 02:10:04 +0800752 int status, tmpstat;
Mark Fashehccd979b2005-12-15 14:31:24 -0800753 struct ocfs1_vol_disk_hdr *hdr;
754 struct ocfs2_dinode *di;
755 int blksize;
756
757 *bh = NULL;
758
759 /* may be > 512 */
Martin K. Petersene1defc42009-05-22 17:17:49 -0400760 *sector_size = bdev_logical_block_size(sb->s_bdev);
Mark Fashehccd979b2005-12-15 14:31:24 -0800761 if (*sector_size > OCFS2_MAX_BLOCKSIZE) {
762 mlog(ML_ERROR, "Hardware sector size too large: %d (max=%d)\n",
763 *sector_size, OCFS2_MAX_BLOCKSIZE);
764 status = -EINVAL;
765 goto bail;
766 }
767
768 /* Can this really happen? */
769 if (*sector_size < OCFS2_MIN_BLOCKSIZE)
770 *sector_size = OCFS2_MIN_BLOCKSIZE;
771
772 /* check block zero for old format */
773 status = ocfs2_get_sector(sb, bh, 0, *sector_size);
774 if (status < 0) {
775 mlog_errno(status);
776 goto bail;
777 }
778 hdr = (struct ocfs1_vol_disk_hdr *) (*bh)->b_data;
779 if (hdr->major_version == OCFS1_MAJOR_VERSION) {
780 mlog(ML_ERROR, "incompatible version: %u.%u\n",
781 hdr->major_version, hdr->minor_version);
782 status = -EINVAL;
783 }
784 if (memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE,
785 strlen(OCFS1_VOLUME_SIGNATURE)) == 0) {
786 mlog(ML_ERROR, "incompatible volume signature: %8s\n",
787 hdr->signature);
788 status = -EINVAL;
789 }
790 brelse(*bh);
791 *bh = NULL;
792 if (status < 0) {
793 mlog(ML_ERROR, "This is an ocfs v1 filesystem which must be "
794 "upgraded before mounting with ocfs v2\n");
795 goto bail;
796 }
797
798 /*
799 * Now check at magic offset for 512, 1024, 2048, 4096
800 * blocksizes. 4096 is the maximum blocksize because it is
801 * the minimum clustersize.
802 */
803 status = -EINVAL;
804 for (blksize = *sector_size;
805 blksize <= OCFS2_MAX_BLOCKSIZE;
806 blksize <<= 1) {
807 tmpstat = ocfs2_get_sector(sb, bh,
808 OCFS2_SUPER_BLOCK_BLKNO,
809 blksize);
810 if (tmpstat < 0) {
811 status = tmpstat;
812 mlog_errno(status);
Joel Beckerfb5cbe92009-10-28 22:28:24 -0700813 break;
Mark Fashehccd979b2005-12-15 14:31:24 -0800814 }
815 di = (struct ocfs2_dinode *) (*bh)->b_data;
Joel Becker73be1922009-01-06 14:57:08 -0800816 memset(stats, 0, sizeof(struct ocfs2_blockcheck_stats));
Jan Kara1c1d9792009-07-22 13:17:19 +0200817 spin_lock_init(&stats->b_lock);
Joel Beckerfb5cbe92009-10-28 22:28:24 -0700818 tmpstat = ocfs2_verify_volume(di, *bh, blksize, stats);
819 if (tmpstat < 0) {
820 brelse(*bh);
821 *bh = NULL;
822 }
823 if (tmpstat != -EAGAIN) {
824 status = tmpstat;
Mark Fashehccd979b2005-12-15 14:31:24 -0800825 break;
Joel Beckerfb5cbe92009-10-28 22:28:24 -0700826 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800827 }
828
829bail:
830 return status;
831}
832
Sunil Mushranc271c5c2006-12-05 17:56:35 -0800833static int ocfs2_verify_heartbeat(struct ocfs2_super *osb)
834{
Sunil Mushran2c442712010-10-07 15:23:50 -0700835 u32 hb_enabled = OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL;
836
837 if (osb->s_mount_opt & hb_enabled) {
838 if (ocfs2_mount_local(osb)) {
Sunil Mushranc271c5c2006-12-05 17:56:35 -0800839 mlog(ML_ERROR, "Cannot heartbeat on a locally "
840 "mounted device.\n");
841 return -EINVAL;
842 }
Sunil Mushran2c442712010-10-07 15:23:50 -0700843 if (ocfs2_userspace_stack(osb)) {
Joel Beckerb61817e2008-02-01 15:08:23 -0800844 mlog(ML_ERROR, "Userspace stack expected, but "
845 "o2cb heartbeat arguments passed to mount\n");
846 return -EINVAL;
847 }
Sunil Mushran2c442712010-10-07 15:23:50 -0700848 if (((osb->s_mount_opt & OCFS2_MOUNT_HB_GLOBAL) &&
849 !ocfs2_cluster_o2cb_global_heartbeat(osb)) ||
850 ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) &&
851 ocfs2_cluster_o2cb_global_heartbeat(osb))) {
852 mlog(ML_ERROR, "Mismatching o2cb heartbeat modes\n");
853 return -EINVAL;
854 }
Joel Beckerb61817e2008-02-01 15:08:23 -0800855 }
856
Sunil Mushran2c442712010-10-07 15:23:50 -0700857 if (!(osb->s_mount_opt & hb_enabled)) {
Joel Beckerb61817e2008-02-01 15:08:23 -0800858 if (!ocfs2_mount_local(osb) && !ocfs2_is_hard_readonly(osb) &&
859 !ocfs2_userspace_stack(osb)) {
Sunil Mushranc271c5c2006-12-05 17:56:35 -0800860 mlog(ML_ERROR, "Heartbeat has to be started to mount "
861 "a read-write clustered device.\n");
862 return -EINVAL;
863 }
864 }
865
866 return 0;
867}
868
Joel Beckerb61817e2008-02-01 15:08:23 -0800869/*
870 * If we're using a userspace stack, mount should have passed
871 * a name that matches the disk. If not, mount should not
872 * have passed a stack.
873 */
874static int ocfs2_verify_userspace_stack(struct ocfs2_super *osb,
875 struct mount_options *mopt)
876{
877 if (!ocfs2_userspace_stack(osb) && mopt->cluster_stack[0]) {
878 mlog(ML_ERROR,
879 "cluster stack passed to mount, but this filesystem "
880 "does not support it\n");
881 return -EINVAL;
882 }
883
884 if (ocfs2_userspace_stack(osb) &&
885 strncmp(osb->osb_cluster_stack, mopt->cluster_stack,
886 OCFS2_STACK_LABEL_LEN)) {
887 mlog(ML_ERROR,
888 "cluster stack passed to mount (\"%s\") does not "
889 "match the filesystem (\"%s\")\n",
890 mopt->cluster_stack,
891 osb->osb_cluster_stack);
892 return -EINVAL;
893 }
894
895 return 0;
896}
897
Jan Kara19ece542008-08-21 20:13:17 +0200898static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend)
899{
900 int type;
901 struct super_block *sb = osb->sb;
902 unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
903 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
904 int status = 0;
905
906 for (type = 0; type < MAXQUOTAS; type++) {
907 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
908 continue;
909 if (unsuspend)
Christoph Hellwig0f0dd622010-05-19 07:16:41 -0400910 status = dquot_resume(sb, type);
Jan Karaeea7feb2010-05-13 22:14:53 +0200911 else {
912 struct ocfs2_mem_dqinfo *oinfo;
913
914 /* Cancel periodic syncing before suspending */
915 oinfo = sb_dqinfo(sb, type)->dqi_priv;
916 cancel_delayed_work_sync(&oinfo->dqi_sync_work);
Christoph Hellwig0f0dd622010-05-19 07:16:41 -0400917 status = dquot_suspend(sb, type);
Jan Karaeea7feb2010-05-13 22:14:53 +0200918 }
Jan Kara19ece542008-08-21 20:13:17 +0200919 if (status < 0)
920 break;
921 }
922 if (status < 0)
923 mlog(ML_ERROR, "Failed to suspend/unsuspend quotas on "
924 "remount (error = %d).\n", status);
925 return status;
926}
927
928static int ocfs2_enable_quotas(struct ocfs2_super *osb)
929{
930 struct inode *inode[MAXQUOTAS] = { NULL, NULL };
931 struct super_block *sb = osb->sb;
932 unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
933 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
934 unsigned int ino[MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE,
935 LOCAL_GROUP_QUOTA_SYSTEM_INODE };
936 int status;
937 int type;
938
939 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NEGATIVE_USAGE;
940 for (type = 0; type < MAXQUOTAS; type++) {
941 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
942 continue;
943 inode[type] = ocfs2_get_system_file_inode(osb, ino[type],
944 osb->slot_num);
945 if (!inode[type]) {
946 status = -ENOENT;
947 goto out_quota_off;
948 }
Christoph Hellwig287a8092010-05-19 07:16:45 -0400949 status = dquot_enable(inode[type], type, QFMT_OCFS2,
950 DQUOT_USAGE_ENABLED);
Jan Kara19ece542008-08-21 20:13:17 +0200951 if (status < 0)
952 goto out_quota_off;
953 }
954
955 for (type = 0; type < MAXQUOTAS; type++)
956 iput(inode[type]);
957 return 0;
958out_quota_off:
959 ocfs2_disable_quotas(osb);
960 for (type = 0; type < MAXQUOTAS; type++)
961 iput(inode[type]);
962 mlog_errno(status);
963 return status;
964}
965
966static void ocfs2_disable_quotas(struct ocfs2_super *osb)
967{
968 int type;
969 struct inode *inode;
970 struct super_block *sb = osb->sb;
Jan Karac06bcbf2010-05-13 22:14:53 +0200971 struct ocfs2_mem_dqinfo *oinfo;
Jan Kara19ece542008-08-21 20:13:17 +0200972
973 /* We mostly ignore errors in this function because there's not much
974 * we can do when we see them */
975 for (type = 0; type < MAXQUOTAS; type++) {
976 if (!sb_has_quota_loaded(sb, type))
977 continue;
Jan Karac06bcbf2010-05-13 22:14:53 +0200978 /* Cancel periodic syncing before we grab dqonoff_mutex */
979 oinfo = sb_dqinfo(sb, type)->dqi_priv;
980 cancel_delayed_work_sync(&oinfo->dqi_sync_work);
Jan Kara19ece542008-08-21 20:13:17 +0200981 inode = igrab(sb->s_dquot.files[type]);
982 /* Turn off quotas. This will remove all dquot structures from
983 * memory and so they will be automatically synced to global
984 * quota files */
Christoph Hellwig0f0dd622010-05-19 07:16:41 -0400985 dquot_disable(sb, type, DQUOT_USAGE_ENABLED |
986 DQUOT_LIMITS_ENABLED);
Jan Kara19ece542008-08-21 20:13:17 +0200987 if (!inode)
988 continue;
989 iput(inode);
990 }
991}
992
993/* Handle quota on quotactl */
Jan Karaf00c9e42010-09-15 17:38:58 +0200994static int ocfs2_quota_on(struct super_block *sb, int type, int format_id)
Jan Kara19ece542008-08-21 20:13:17 +0200995{
996 unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
997 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
998
999 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
1000 return -EINVAL;
1001
Christoph Hellwig287a8092010-05-19 07:16:45 -04001002 return dquot_enable(sb_dqopt(sb)->files[type], type,
1003 format_id, DQUOT_LIMITS_ENABLED);
Jan Kara19ece542008-08-21 20:13:17 +02001004}
1005
1006/* Handle quota off quotactl */
Christoph Hellwig307ae182010-05-19 07:16:43 -04001007static int ocfs2_quota_off(struct super_block *sb, int type)
Jan Kara19ece542008-08-21 20:13:17 +02001008{
Christoph Hellwig0f0dd622010-05-19 07:16:41 -04001009 return dquot_disable(sb, type, DQUOT_LIMITS_ENABLED);
Jan Kara19ece542008-08-21 20:13:17 +02001010}
1011
Alexey Dobriyan0d54b212009-09-21 17:01:09 -07001012static const struct quotactl_ops ocfs2_quotactl_ops = {
Jan Karaf00c9e42010-09-15 17:38:58 +02001013 .quota_on_meta = ocfs2_quota_on,
Jan Kara19ece542008-08-21 20:13:17 +02001014 .quota_off = ocfs2_quota_off,
Christoph Hellwig287a8092010-05-19 07:16:45 -04001015 .quota_sync = dquot_quota_sync,
1016 .get_info = dquot_get_dqinfo,
1017 .set_info = dquot_set_dqinfo,
1018 .get_dqblk = dquot_get_dqblk,
1019 .set_dqblk = dquot_set_dqblk,
Jan Kara19ece542008-08-21 20:13:17 +02001020};
1021
Mark Fashehccd979b2005-12-15 14:31:24 -08001022static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
1023{
1024 struct dentry *root;
1025 int status, sector_size;
Tiger Yangc0123ad2007-09-08 00:16:10 +08001026 struct mount_options parsed_options;
Mark Fashehccd979b2005-12-15 14:31:24 -08001027 struct inode *inode = NULL;
1028 struct ocfs2_super *osb = NULL;
1029 struct buffer_head *bh = NULL;
Goldwyn Rodrigues49fa8142013-08-28 16:35:21 -07001030 char nodestr[12];
Joel Becker73be1922009-01-06 14:57:08 -08001031 struct ocfs2_blockcheck_stats stats;
Mark Fashehccd979b2005-12-15 14:31:24 -08001032
Tao Ma32a42d32011-02-23 21:29:08 +08001033 trace_ocfs2_fill_super(sb, data, silent);
Mark Fashehccd979b2005-12-15 14:31:24 -08001034
Tiger Yangc0123ad2007-09-08 00:16:10 +08001035 if (!ocfs2_parse_options(sb, data, &parsed_options, 0)) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001036 status = -EINVAL;
1037 goto read_super_error;
1038 }
1039
1040 /* probe for superblock */
Joel Becker73be1922009-01-06 14:57:08 -08001041 status = ocfs2_sb_probe(sb, &bh, &sector_size, &stats);
Mark Fashehccd979b2005-12-15 14:31:24 -08001042 if (status < 0) {
1043 mlog(ML_ERROR, "superblock probe failed!\n");
1044 goto read_super_error;
1045 }
1046
Joel Becker73be1922009-01-06 14:57:08 -08001047 status = ocfs2_initialize_super(sb, bh, sector_size, &stats);
Mark Fashehccd979b2005-12-15 14:31:24 -08001048 osb = OCFS2_SB(sb);
1049 if (status < 0) {
1050 mlog_errno(status);
1051 goto read_super_error;
1052 }
1053 brelse(bh);
1054 bh = NULL;
Tiger Yanga68979b2008-11-14 11:17:52 +08001055
Jan Kara5297aad2009-10-15 14:54:04 +02001056 if (!ocfs2_check_set_options(sb, &parsed_options)) {
1057 status = -EINVAL;
1058 goto read_super_error;
1059 }
Tiger Yangc0123ad2007-09-08 00:16:10 +08001060 osb->s_mount_opt = parsed_options.mount_opt;
1061 osb->s_atime_quantum = parsed_options.atime_quantum;
1062 osb->preferred_slot = parsed_options.slot;
Mark Fashehd147b3d2007-11-07 14:40:36 -08001063 osb->osb_commit_interval = parsed_options.commit_interval;
Mark Fasheh73c8a802010-04-05 18:17:13 -07001064
1065 ocfs2_la_set_sizes(osb, parsed_options.localalloc_opt);
Mark Fashehd02f00c2009-12-07 13:10:48 -08001066 osb->osb_resv_level = parsed_options.resv_level;
Mark Fasheh83f92312010-04-05 18:17:16 -07001067 osb->osb_dir_resv_level = parsed_options.resv_level;
1068 if (parsed_options.dir_resv_level == -1)
1069 osb->osb_dir_resv_level = parsed_options.resv_level;
1070 else
1071 osb->osb_dir_resv_level = parsed_options.dir_resv_level;
Mark Fashehccd979b2005-12-15 14:31:24 -08001072
Joel Beckerb61817e2008-02-01 15:08:23 -08001073 status = ocfs2_verify_userspace_stack(osb, &parsed_options);
1074 if (status)
1075 goto read_super_error;
1076
Mark Fashehccd979b2005-12-15 14:31:24 -08001077 sb->s_magic = OCFS2_SUPER_MAGIC;
1078
Al Viro9e1f1de2011-06-03 18:24:58 -04001079 sb->s_flags = (sb->s_flags & ~(MS_POSIXACL | MS_NOSEC)) |
Tiger Yanga68979b2008-11-14 11:17:52 +08001080 ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0);
1081
Mark Fashehccd979b2005-12-15 14:31:24 -08001082 /* Hard readonly mode only if: bdev_read_only, MS_RDONLY,
1083 * heartbeat=none */
1084 if (bdev_read_only(sb->s_bdev)) {
1085 if (!(sb->s_flags & MS_RDONLY)) {
1086 status = -EACCES;
1087 mlog(ML_ERROR, "Readonly device detected but readonly "
1088 "mount was not specified.\n");
1089 goto read_super_error;
1090 }
1091
1092 /* You should not be able to start a local heartbeat
1093 * on a readonly device. */
1094 if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) {
1095 status = -EROFS;
1096 mlog(ML_ERROR, "Local heartbeat specified on readonly "
1097 "device.\n");
1098 goto read_super_error;
1099 }
1100
1101 status = ocfs2_check_journals_nolocks(osb);
1102 if (status < 0) {
1103 if (status == -EROFS)
1104 mlog(ML_ERROR, "Recovery required on readonly "
1105 "file system, but write access is "
1106 "unavailable.\n");
1107 else
Sunil Mushran2bd63212010-01-25 16:57:38 -08001108 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001109 goto read_super_error;
1110 }
1111
1112 ocfs2_set_ro_flag(osb, 1);
1113
Sunil Mushran619c2002011-07-24 10:34:54 -07001114 printk(KERN_NOTICE "ocfs2: Readonly device (%s) detected. "
1115 "Cluster services will not be used for this mount. "
1116 "Recovery will be skipped.\n", osb->dev_str);
Mark Fashehccd979b2005-12-15 14:31:24 -08001117 }
1118
1119 if (!ocfs2_is_hard_readonly(osb)) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001120 if (sb->s_flags & MS_RDONLY)
1121 ocfs2_set_ro_flag(osb, 0);
1122 }
1123
Sunil Mushranc271c5c2006-12-05 17:56:35 -08001124 status = ocfs2_verify_heartbeat(osb);
1125 if (status < 0) {
1126 mlog_errno(status);
1127 goto read_super_error;
1128 }
1129
Mark Fashehccd979b2005-12-15 14:31:24 -08001130 osb->osb_debug_root = debugfs_create_dir(osb->uuid_str,
1131 ocfs2_debugfs_root);
1132 if (!osb->osb_debug_root) {
1133 status = -EINVAL;
1134 mlog(ML_ERROR, "Unable to create per-mount debugfs root.\n");
1135 goto read_super_error;
1136 }
1137
Sunil Mushran50397502008-12-17 14:17:43 -08001138 osb->osb_ctxt = debugfs_create_file("fs_state", S_IFREG|S_IRUSR,
1139 osb->osb_debug_root,
1140 osb,
1141 &ocfs2_osb_debug_fops);
1142 if (!osb->osb_ctxt) {
1143 status = -EINVAL;
1144 mlog_errno(status);
1145 goto read_super_error;
1146 }
1147
Joel Becker73be1922009-01-06 14:57:08 -08001148 if (ocfs2_meta_ecc(osb)) {
1149 status = ocfs2_blockcheck_stats_debugfs_install(
1150 &osb->osb_ecc_stats,
1151 osb->osb_debug_root);
1152 if (status) {
1153 mlog(ML_ERROR,
1154 "Unable to create blockcheck statistics "
1155 "files\n");
1156 goto read_super_error;
1157 }
1158 }
1159
Mark Fashehccd979b2005-12-15 14:31:24 -08001160 status = ocfs2_mount_volume(sb);
Mark Fashehccd979b2005-12-15 14:31:24 -08001161 if (status < 0)
1162 goto read_super_error;
1163
Al Virobe0d93f2012-02-12 21:46:49 -05001164 if (osb->root_inode)
1165 inode = igrab(osb->root_inode);
1166
Mark Fashehccd979b2005-12-15 14:31:24 -08001167 if (!inode) {
1168 status = -EIO;
1169 mlog_errno(status);
1170 goto read_super_error;
1171 }
1172
Al Viro48fde702012-01-08 22:15:13 -05001173 root = d_make_root(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001174 if (!root) {
1175 status = -ENOMEM;
1176 mlog_errno(status);
1177 goto read_super_error;
1178 }
1179
1180 sb->s_root = root;
1181
1182 ocfs2_complete_mount_recovery(osb);
1183
Sunil Mushranc271c5c2006-12-05 17:56:35 -08001184 if (ocfs2_mount_local(osb))
1185 snprintf(nodestr, sizeof(nodestr), "local");
1186 else
Joel Becker19fdb622008-01-30 15:38:24 -08001187 snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num);
Sunil Mushranc271c5c2006-12-05 17:56:35 -08001188
1189 printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %s, slot %d) "
Sunil Mushran781ee3e2006-04-27 16:41:31 -07001190 "with %s data mode.\n",
Sunil Mushranc271c5c2006-12-05 17:56:35 -08001191 osb->dev_str, nodestr, osb->slot_num,
Mark Fashehccd979b2005-12-15 14:31:24 -08001192 osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" :
1193 "ordered");
1194
1195 atomic_set(&osb->vol_state, VOLUME_MOUNTED);
1196 wake_up(&osb->osb_mount_event);
1197
Jan Kara19ece542008-08-21 20:13:17 +02001198 /* Now we can initialize quotas because we can afford to wait
1199 * for cluster locks recovery now. That also means that truncation
1200 * log recovery can happen but that waits for proper quota setup */
1201 if (!(sb->s_flags & MS_RDONLY)) {
1202 status = ocfs2_enable_quotas(osb);
1203 if (status < 0) {
1204 /* We have to err-out specially here because
1205 * s_root is already set */
1206 mlog_errno(status);
1207 atomic_set(&osb->vol_state, VOLUME_DISABLED);
1208 wake_up(&osb->osb_mount_event);
Jan Kara19ece542008-08-21 20:13:17 +02001209 return status;
1210 }
1211 }
1212
1213 ocfs2_complete_quota_recovery(osb);
1214
1215 /* Now we wake up again for processes waiting for quotas */
1216 atomic_set(&osb->vol_state, VOLUME_MOUNTED_QUOTAS);
1217 wake_up(&osb->osb_mount_event);
1218
Sunil Mushrandf152c22009-06-22 11:40:07 -07001219 /* Start this when the mount is almost sure of being successful */
Jeff Mahoney8b712cd2009-07-07 17:22:12 -04001220 ocfs2_orphan_scan_start(osb);
Sunil Mushrandf152c22009-06-22 11:40:07 -07001221
Mark Fashehccd979b2005-12-15 14:31:24 -08001222 return status;
1223
1224read_super_error:
Mark Fasheha81cb882008-10-07 14:25:16 -07001225 brelse(bh);
Mark Fashehccd979b2005-12-15 14:31:24 -08001226
Mark Fashehccd979b2005-12-15 14:31:24 -08001227 if (osb) {
1228 atomic_set(&osb->vol_state, VOLUME_DISABLED);
1229 wake_up(&osb->osb_mount_event);
1230 ocfs2_dismount_volume(sb, 1);
1231 }
1232
Tao Mac1e8d352011-03-07 16:43:21 +08001233 if (status)
1234 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001235 return status;
1236}
1237
Al Viro152a0832010-07-25 00:46:55 +04001238static struct dentry *ocfs2_mount(struct file_system_type *fs_type,
David Howells454e2392006-06-23 02:02:57 -07001239 int flags,
1240 const char *dev_name,
Al Viro152a0832010-07-25 00:46:55 +04001241 void *data)
Mark Fashehccd979b2005-12-15 14:31:24 -08001242{
Al Viro152a0832010-07-25 00:46:55 +04001243 return mount_bdev(fs_type, flags, dev_name, data, ocfs2_fill_super);
Mark Fashehccd979b2005-12-15 14:31:24 -08001244}
1245
1246static struct file_system_type ocfs2_fs_type = {
1247 .owner = THIS_MODULE,
1248 .name = "ocfs2",
Al Viro152a0832010-07-25 00:46:55 +04001249 .mount = ocfs2_mount,
Goldwyn Rodrigues8ed6b232014-04-03 14:46:59 -07001250 .kill_sb = kill_block_super,
Mark Fasheh1ba9da22006-09-08 14:22:54 -07001251 .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE,
Mark Fashehccd979b2005-12-15 14:31:24 -08001252 .next = NULL
1253};
Eric W. Biederman91417702013-03-07 01:08:55 -08001254MODULE_ALIAS_FS("ocfs2");
Mark Fashehccd979b2005-12-15 14:31:24 -08001255
Jan Kara5297aad2009-10-15 14:54:04 +02001256static int ocfs2_check_set_options(struct super_block *sb,
1257 struct mount_options *options)
1258{
1259 if (options->mount_opt & OCFS2_MOUNT_USRQUOTA &&
1260 !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
1261 OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) {
1262 mlog(ML_ERROR, "User quotas were requested, but this "
1263 "filesystem does not have the feature enabled.\n");
1264 return 0;
1265 }
1266 if (options->mount_opt & OCFS2_MOUNT_GRPQUOTA &&
1267 !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
1268 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) {
1269 mlog(ML_ERROR, "Group quotas were requested, but this "
1270 "filesystem does not have the feature enabled.\n");
1271 return 0;
1272 }
1273 if (options->mount_opt & OCFS2_MOUNT_POSIX_ACL &&
1274 !OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR)) {
1275 mlog(ML_ERROR, "ACL support requested but extended attributes "
1276 "feature is not enabled\n");
1277 return 0;
1278 }
1279 /* No ACL setting specified? Use XATTR feature... */
1280 if (!(options->mount_opt & (OCFS2_MOUNT_POSIX_ACL |
1281 OCFS2_MOUNT_NO_POSIX_ACL))) {
1282 if (OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR))
1283 options->mount_opt |= OCFS2_MOUNT_POSIX_ACL;
1284 else
1285 options->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL;
1286 }
1287 return 1;
1288}
1289
Mark Fashehccd979b2005-12-15 14:31:24 -08001290static int ocfs2_parse_options(struct super_block *sb,
1291 char *options,
Tiger Yangc0123ad2007-09-08 00:16:10 +08001292 struct mount_options *mopt,
Mark Fashehccd979b2005-12-15 14:31:24 -08001293 int is_remount)
1294{
Mark Fasheh52c303c2011-01-31 11:31:04 -08001295 int status, user_stack = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08001296 char *p;
Sunil Mushran2c442712010-10-07 15:23:50 -07001297 u32 tmp;
Mark Fashehccd979b2005-12-15 14:31:24 -08001298
Tao Ma32a42d32011-02-23 21:29:08 +08001299 trace_ocfs2_parse_options(is_remount, options ? options : "(none)");
Mark Fashehccd979b2005-12-15 14:31:24 -08001300
Mark Fashehd147b3d2007-11-07 14:40:36 -08001301 mopt->commit_interval = 0;
Sunil Mushran4b37fcb2010-04-13 18:00:31 -07001302 mopt->mount_opt = OCFS2_MOUNT_NOINTR;
Tiger Yangc0123ad2007-09-08 00:16:10 +08001303 mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
1304 mopt->slot = OCFS2_INVALID_SLOT;
Mark Fasheh73c8a802010-04-05 18:17:13 -07001305 mopt->localalloc_opt = -1;
Joel Beckerb61817e2008-02-01 15:08:23 -08001306 mopt->cluster_stack[0] = '\0';
Mark Fashehd02f00c2009-12-07 13:10:48 -08001307 mopt->resv_level = OCFS2_DEFAULT_RESV_LEVEL;
Mark Fasheh83f92312010-04-05 18:17:16 -07001308 mopt->dir_resv_level = -1;
Mark Fashehccd979b2005-12-15 14:31:24 -08001309
1310 if (!options) {
1311 status = 1;
1312 goto bail;
1313 }
1314
1315 while ((p = strsep(&options, ",")) != NULL) {
1316 int token, option;
1317 substring_t args[MAX_OPT_ARGS];
1318
1319 if (!*p)
1320 continue;
1321
1322 token = match_token(p, tokens, args);
1323 switch (token) {
1324 case Opt_hb_local:
Tiger Yangc0123ad2007-09-08 00:16:10 +08001325 mopt->mount_opt |= OCFS2_MOUNT_HB_LOCAL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001326 break;
1327 case Opt_hb_none:
Sunil Mushran2c442712010-10-07 15:23:50 -07001328 mopt->mount_opt |= OCFS2_MOUNT_HB_NONE;
1329 break;
1330 case Opt_hb_global:
1331 mopt->mount_opt |= OCFS2_MOUNT_HB_GLOBAL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001332 break;
1333 case Opt_barrier:
1334 if (match_int(&args[0], &option)) {
1335 status = 0;
1336 goto bail;
1337 }
1338 if (option)
Tiger Yangc0123ad2007-09-08 00:16:10 +08001339 mopt->mount_opt |= OCFS2_MOUNT_BARRIER;
Mark Fashehccd979b2005-12-15 14:31:24 -08001340 else
Tiger Yangc0123ad2007-09-08 00:16:10 +08001341 mopt->mount_opt &= ~OCFS2_MOUNT_BARRIER;
Mark Fashehccd979b2005-12-15 14:31:24 -08001342 break;
1343 case Opt_intr:
Tiger Yangc0123ad2007-09-08 00:16:10 +08001344 mopt->mount_opt &= ~OCFS2_MOUNT_NOINTR;
Mark Fashehccd979b2005-12-15 14:31:24 -08001345 break;
1346 case Opt_nointr:
Tiger Yangc0123ad2007-09-08 00:16:10 +08001347 mopt->mount_opt |= OCFS2_MOUNT_NOINTR;
Mark Fashehccd979b2005-12-15 14:31:24 -08001348 break;
1349 case Opt_err_panic:
Tiger Yangc0123ad2007-09-08 00:16:10 +08001350 mopt->mount_opt |= OCFS2_MOUNT_ERRORS_PANIC;
Mark Fashehccd979b2005-12-15 14:31:24 -08001351 break;
1352 case Opt_err_ro:
Tiger Yangc0123ad2007-09-08 00:16:10 +08001353 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC;
Mark Fashehccd979b2005-12-15 14:31:24 -08001354 break;
1355 case Opt_data_ordered:
Tiger Yangc0123ad2007-09-08 00:16:10 +08001356 mopt->mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK;
Mark Fashehccd979b2005-12-15 14:31:24 -08001357 break;
1358 case Opt_data_writeback:
Tiger Yangc0123ad2007-09-08 00:16:10 +08001359 mopt->mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK;
Mark Fashehccd979b2005-12-15 14:31:24 -08001360 break;
Tiger Yangcf1d6c72008-08-18 17:11:00 +08001361 case Opt_user_xattr:
1362 mopt->mount_opt &= ~OCFS2_MOUNT_NOUSERXATTR;
1363 break;
1364 case Opt_nouser_xattr:
1365 mopt->mount_opt |= OCFS2_MOUNT_NOUSERXATTR;
1366 break;
Tiger Yang7f1a37e2006-11-15 15:48:42 +08001367 case Opt_atime_quantum:
1368 if (match_int(&args[0], &option)) {
1369 status = 0;
1370 goto bail;
1371 }
1372 if (option >= 0)
Tiger Yangc0123ad2007-09-08 00:16:10 +08001373 mopt->atime_quantum = option;
Tiger Yang7f1a37e2006-11-15 15:48:42 +08001374 break;
Sunil Mushranbaf46612007-06-18 17:00:24 -07001375 case Opt_slot:
1376 option = 0;
1377 if (match_int(&args[0], &option)) {
1378 status = 0;
1379 goto bail;
1380 }
1381 if (option)
Tiger Yangc0123ad2007-09-08 00:16:10 +08001382 mopt->slot = (s16)option;
Sunil Mushranbaf46612007-06-18 17:00:24 -07001383 break;
Mark Fashehd147b3d2007-11-07 14:40:36 -08001384 case Opt_commit:
1385 option = 0;
1386 if (match_int(&args[0], &option)) {
1387 status = 0;
1388 goto bail;
1389 }
1390 if (option < 0)
1391 return 0;
1392 if (option == 0)
Joel Becker2b4e30f2008-09-03 20:03:41 -07001393 option = JBD2_DEFAULT_MAX_COMMIT_AGE;
Mark Fashehd147b3d2007-11-07 14:40:36 -08001394 mopt->commit_interval = HZ * option;
1395 break;
Sunil Mushran2fbe8d12007-12-20 14:58:11 -08001396 case Opt_localalloc:
1397 option = 0;
1398 if (match_int(&args[0], &option)) {
1399 status = 0;
1400 goto bail;
1401 }
Mark Fasheh73c8a802010-04-05 18:17:13 -07001402 if (option >= 0)
Sunil Mushran2fbe8d12007-12-20 14:58:11 -08001403 mopt->localalloc_opt = option;
1404 break;
Mark Fasheh53fc6222007-12-20 16:49:04 -08001405 case Opt_localflocks:
1406 /*
1407 * Changing this during remount could race
1408 * flock() requests, or "unbalance" existing
1409 * ones (e.g., a lock is taken in one mode but
1410 * dropped in the other). If users care enough
1411 * to flip locking modes during remount, we
1412 * could add a "local" flag to individual
1413 * flock structures for proper tracking of
1414 * state.
1415 */
1416 if (!is_remount)
1417 mopt->mount_opt |= OCFS2_MOUNT_LOCALFLOCKS;
1418 break;
Joel Beckerb61817e2008-02-01 15:08:23 -08001419 case Opt_stack:
1420 /* Check both that the option we were passed
1421 * is of the right length and that it is a proper
1422 * string of the right length.
1423 */
1424 if (((args[0].to - args[0].from) !=
1425 OCFS2_STACK_LABEL_LEN) ||
1426 (strnlen(args[0].from,
1427 OCFS2_STACK_LABEL_LEN) !=
1428 OCFS2_STACK_LABEL_LEN)) {
1429 mlog(ML_ERROR,
1430 "Invalid cluster_stack option\n");
1431 status = 0;
1432 goto bail;
1433 }
1434 memcpy(mopt->cluster_stack, args[0].from,
1435 OCFS2_STACK_LABEL_LEN);
1436 mopt->cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0';
Mark Fasheh52c303c2011-01-31 11:31:04 -08001437 /*
1438 * Open code the memcmp here as we don't have
1439 * an osb to pass to
1440 * ocfs2_userspace_stack().
1441 */
1442 if (memcmp(mopt->cluster_stack,
1443 OCFS2_CLASSIC_CLUSTER_STACK,
1444 OCFS2_STACK_LABEL_LEN))
1445 user_stack = 1;
Joel Beckerb61817e2008-02-01 15:08:23 -08001446 break;
Joel Becker12462f12008-09-03 20:03:40 -07001447 case Opt_inode64:
1448 mopt->mount_opt |= OCFS2_MOUNT_INODE64;
1449 break;
Jan Kara19ece542008-08-21 20:13:17 +02001450 case Opt_usrquota:
Jan Kara19ece542008-08-21 20:13:17 +02001451 mopt->mount_opt |= OCFS2_MOUNT_USRQUOTA;
1452 break;
1453 case Opt_grpquota:
Jan Kara19ece542008-08-21 20:13:17 +02001454 mopt->mount_opt |= OCFS2_MOUNT_GRPQUOTA;
1455 break;
Tristan Ye7bdb0d12010-10-11 16:46:39 +08001456 case Opt_coherency_buffered:
1457 mopt->mount_opt |= OCFS2_MOUNT_COHERENCY_BUFFERED;
1458 break;
1459 case Opt_coherency_full:
1460 mopt->mount_opt &= ~OCFS2_MOUNT_COHERENCY_BUFFERED;
1461 break;
Tiger Yanga68979b2008-11-14 11:17:52 +08001462 case Opt_acl:
1463 mopt->mount_opt |= OCFS2_MOUNT_POSIX_ACL;
Jan Kara5297aad2009-10-15 14:54:04 +02001464 mopt->mount_opt &= ~OCFS2_MOUNT_NO_POSIX_ACL;
Tiger Yanga68979b2008-11-14 11:17:52 +08001465 break;
1466 case Opt_noacl:
Jan Kara5297aad2009-10-15 14:54:04 +02001467 mopt->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL;
Tiger Yanga68979b2008-11-14 11:17:52 +08001468 mopt->mount_opt &= ~OCFS2_MOUNT_POSIX_ACL;
1469 break;
Mark Fashehd02f00c2009-12-07 13:10:48 -08001470 case Opt_resv_level:
1471 if (is_remount)
1472 break;
1473 if (match_int(&args[0], &option)) {
1474 status = 0;
1475 goto bail;
1476 }
1477 if (option >= OCFS2_MIN_RESV_LEVEL &&
1478 option < OCFS2_MAX_RESV_LEVEL)
1479 mopt->resv_level = option;
1480 break;
Mark Fasheh83f92312010-04-05 18:17:16 -07001481 case Opt_dir_resv_level:
1482 if (is_remount)
1483 break;
1484 if (match_int(&args[0], &option)) {
1485 status = 0;
1486 goto bail;
1487 }
1488 if (option >= OCFS2_MIN_RESV_LEVEL &&
1489 option < OCFS2_MAX_RESV_LEVEL)
1490 mopt->dir_resv_level = option;
1491 break;
Mark Fashehccd979b2005-12-15 14:31:24 -08001492 default:
1493 mlog(ML_ERROR,
1494 "Unrecognized mount option \"%s\" "
1495 "or missing value\n", p);
1496 status = 0;
1497 goto bail;
1498 }
1499 }
1500
Mark Fasheh52c303c2011-01-31 11:31:04 -08001501 if (user_stack == 0) {
1502 /* Ensure only one heartbeat mode */
1503 tmp = mopt->mount_opt & (OCFS2_MOUNT_HB_LOCAL |
1504 OCFS2_MOUNT_HB_GLOBAL |
1505 OCFS2_MOUNT_HB_NONE);
1506 if (hweight32(tmp) != 1) {
1507 mlog(ML_ERROR, "Invalid heartbeat mount options\n");
1508 status = 0;
1509 goto bail;
1510 }
Sunil Mushran2c442712010-10-07 15:23:50 -07001511 }
1512
Mark Fashehccd979b2005-12-15 14:31:24 -08001513 status = 1;
1514
1515bail:
Mark Fashehccd979b2005-12-15 14:31:24 -08001516 return status;
1517}
1518
Al Viro34c80b12011-12-08 21:32:45 -05001519static int ocfs2_show_options(struct seq_file *s, struct dentry *root)
Sunil Mushrand5500712007-09-06 13:34:16 -07001520{
Al Viro34c80b12011-12-08 21:32:45 -05001521 struct ocfs2_super *osb = OCFS2_SB(root->d_sb);
Sunil Mushrand5500712007-09-06 13:34:16 -07001522 unsigned long opts = osb->s_mount_opt;
Mark Fashehebcee4b2008-07-28 14:55:20 -07001523 unsigned int local_alloc_megs;
Sunil Mushrand5500712007-09-06 13:34:16 -07001524
Sunil Mushran2c442712010-10-07 15:23:50 -07001525 if (opts & (OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL)) {
1526 seq_printf(s, ",_netdev");
1527 if (opts & OCFS2_MOUNT_HB_LOCAL)
1528 seq_printf(s, ",%s", OCFS2_HB_LOCAL);
1529 else
1530 seq_printf(s, ",%s", OCFS2_HB_GLOBAL);
1531 } else
1532 seq_printf(s, ",%s", OCFS2_HB_NONE);
Sunil Mushrand5500712007-09-06 13:34:16 -07001533
1534 if (opts & OCFS2_MOUNT_NOINTR)
1535 seq_printf(s, ",nointr");
1536
1537 if (opts & OCFS2_MOUNT_DATA_WRITEBACK)
1538 seq_printf(s, ",data=writeback");
1539 else
1540 seq_printf(s, ",data=ordered");
1541
1542 if (opts & OCFS2_MOUNT_BARRIER)
1543 seq_printf(s, ",barrier=1");
1544
1545 if (opts & OCFS2_MOUNT_ERRORS_PANIC)
1546 seq_printf(s, ",errors=panic");
1547 else
1548 seq_printf(s, ",errors=remount-ro");
1549
1550 if (osb->preferred_slot != OCFS2_INVALID_SLOT)
1551 seq_printf(s, ",preferred_slot=%d", osb->preferred_slot);
1552
Al Viro34c80b12011-12-08 21:32:45 -05001553 seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum);
Sunil Mushrand5500712007-09-06 13:34:16 -07001554
Mark Fashehd147b3d2007-11-07 14:40:36 -08001555 if (osb->osb_commit_interval)
1556 seq_printf(s, ",commit=%u",
1557 (unsigned) (osb->osb_commit_interval / HZ));
1558
Mark Fashehebcee4b2008-07-28 14:55:20 -07001559 local_alloc_megs = osb->local_alloc_bits >> (20 - osb->s_clustersize_bits);
Mark Fasheh6b820212010-04-05 18:17:14 -07001560 if (local_alloc_megs != ocfs2_la_default_mb(osb))
Mark Fashehebcee4b2008-07-28 14:55:20 -07001561 seq_printf(s, ",localalloc=%d", local_alloc_megs);
Sunil Mushran2fbe8d12007-12-20 14:58:11 -08001562
Mark Fasheh53fc6222007-12-20 16:49:04 -08001563 if (opts & OCFS2_MOUNT_LOCALFLOCKS)
1564 seq_printf(s, ",localflocks,");
1565
Joel Beckerb61817e2008-02-01 15:08:23 -08001566 if (osb->osb_cluster_stack[0])
1567 seq_printf(s, ",cluster_stack=%.*s", OCFS2_STACK_LABEL_LEN,
1568 osb->osb_cluster_stack);
Jan Kara19ece542008-08-21 20:13:17 +02001569 if (opts & OCFS2_MOUNT_USRQUOTA)
1570 seq_printf(s, ",usrquota");
1571 if (opts & OCFS2_MOUNT_GRPQUOTA)
1572 seq_printf(s, ",grpquota");
Joel Beckerb61817e2008-02-01 15:08:23 -08001573
Tristan Ye7bdb0d12010-10-11 16:46:39 +08001574 if (opts & OCFS2_MOUNT_COHERENCY_BUFFERED)
1575 seq_printf(s, ",coherency=buffered");
1576 else
1577 seq_printf(s, ",coherency=full");
1578
Sunil Mushranb0f73cf2008-09-05 11:29:14 -07001579 if (opts & OCFS2_MOUNT_NOUSERXATTR)
1580 seq_printf(s, ",nouser_xattr");
1581 else
1582 seq_printf(s, ",user_xattr");
1583
Joel Becker12462f12008-09-03 20:03:40 -07001584 if (opts & OCFS2_MOUNT_INODE64)
1585 seq_printf(s, ",inode64");
1586
Tiger Yanga68979b2008-11-14 11:17:52 +08001587 if (opts & OCFS2_MOUNT_POSIX_ACL)
1588 seq_printf(s, ",acl");
1589 else
1590 seq_printf(s, ",noacl");
Tiger Yanga68979b2008-11-14 11:17:52 +08001591
Mark Fashehd02f00c2009-12-07 13:10:48 -08001592 if (osb->osb_resv_level != OCFS2_DEFAULT_RESV_LEVEL)
1593 seq_printf(s, ",resv_level=%d", osb->osb_resv_level);
1594
Mark Fasheh83f92312010-04-05 18:17:16 -07001595 if (osb->osb_dir_resv_level != osb->osb_resv_level)
1596 seq_printf(s, ",dir_resv_level=%d", osb->osb_resv_level);
1597
Sunil Mushrand5500712007-09-06 13:34:16 -07001598 return 0;
1599}
1600
Mark Fashehccd979b2005-12-15 14:31:24 -08001601static int __init ocfs2_init(void)
1602{
Wengang Wangc18ceab2014-04-03 14:46:46 -07001603 int status;
Mark Fasheha11f7e62011-06-22 14:23:38 -07001604
Mark Fashehccd979b2005-12-15 14:31:24 -08001605 status = init_ocfs2_uptodate_cache();
Al Viro342827d2012-03-17 22:03:58 -04001606 if (status < 0)
1607 goto out1;
Mark Fashehccd979b2005-12-15 14:31:24 -08001608
1609 status = ocfs2_initialize_mem_caches();
Al Viro342827d2012-03-17 22:03:58 -04001610 if (status < 0)
1611 goto out2;
Mark Fashehccd979b2005-12-15 14:31:24 -08001612
1613 ocfs2_wq = create_singlethread_workqueue("ocfs2_wq");
1614 if (!ocfs2_wq) {
1615 status = -ENOMEM;
Al Viro342827d2012-03-17 22:03:58 -04001616 goto out3;
Mark Fashehccd979b2005-12-15 14:31:24 -08001617 }
1618
Mark Fashehccd979b2005-12-15 14:31:24 -08001619 ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL);
1620 if (!ocfs2_debugfs_root) {
1621 status = -EFAULT;
1622 mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n");
1623 }
1624
Joel Becker63e0c482008-01-30 16:58:36 -08001625 ocfs2_set_locking_protocol();
1626
Jan Kara9e33d692008-08-25 19:56:50 +02001627 status = register_quota_format(&ocfs2_quota_format);
Al Viro342827d2012-03-17 22:03:58 -04001628 if (status < 0)
1629 goto out4;
1630 status = register_filesystem(&ocfs2_fs_type);
1631 if (!status)
1632 return 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08001633
Al Viro342827d2012-03-17 22:03:58 -04001634 unregister_quota_format(&ocfs2_quota_format);
1635out4:
1636 destroy_workqueue(ocfs2_wq);
1637 debugfs_remove(ocfs2_debugfs_root);
1638out3:
1639 ocfs2_free_mem_caches();
1640out2:
1641 exit_ocfs2_uptodate_cache();
1642out1:
1643 mlog_errno(status);
1644 return status;
Mark Fashehccd979b2005-12-15 14:31:24 -08001645}
1646
1647static void __exit ocfs2_exit(void)
1648{
Mark Fashehccd979b2005-12-15 14:31:24 -08001649 if (ocfs2_wq) {
1650 flush_workqueue(ocfs2_wq);
1651 destroy_workqueue(ocfs2_wq);
1652 }
1653
Jan Kara9e33d692008-08-25 19:56:50 +02001654 unregister_quota_format(&ocfs2_quota_format);
1655
Mark Fashehccd979b2005-12-15 14:31:24 -08001656 debugfs_remove(ocfs2_debugfs_root);
1657
1658 ocfs2_free_mem_caches();
1659
1660 unregister_filesystem(&ocfs2_fs_type);
1661
Mark Fashehccd979b2005-12-15 14:31:24 -08001662 exit_ocfs2_uptodate_cache();
Mark Fashehccd979b2005-12-15 14:31:24 -08001663}
1664
1665static void ocfs2_put_super(struct super_block *sb)
1666{
Tao Ma32a42d32011-02-23 21:29:08 +08001667 trace_ocfs2_put_super(sb);
Mark Fashehccd979b2005-12-15 14:31:24 -08001668
1669 ocfs2_sync_blockdev(sb);
1670 ocfs2_dismount_volume(sb, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -08001671}
1672
David Howells726c3342006-06-23 02:02:58 -07001673static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf)
Mark Fashehccd979b2005-12-15 14:31:24 -08001674{
1675 struct ocfs2_super *osb;
1676 u32 numbits, freebits;
1677 int status;
1678 struct ocfs2_dinode *bm_lock;
1679 struct buffer_head *bh = NULL;
1680 struct inode *inode = NULL;
1681
Tao Ma32a42d32011-02-23 21:29:08 +08001682 trace_ocfs2_statfs(dentry->d_sb, buf);
Mark Fashehccd979b2005-12-15 14:31:24 -08001683
David Howells726c3342006-06-23 02:02:58 -07001684 osb = OCFS2_SB(dentry->d_sb);
Mark Fashehccd979b2005-12-15 14:31:24 -08001685
1686 inode = ocfs2_get_system_file_inode(osb,
1687 GLOBAL_BITMAP_SYSTEM_INODE,
1688 OCFS2_INVALID_SLOT);
1689 if (!inode) {
1690 mlog(ML_ERROR, "failed to get bitmap inode\n");
1691 status = -EIO;
1692 goto bail;
1693 }
1694
Mark Fashehe63aecb62007-10-18 15:30:42 -07001695 status = ocfs2_inode_lock(inode, &bh, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -08001696 if (status < 0) {
1697 mlog_errno(status);
1698 goto bail;
1699 }
1700
1701 bm_lock = (struct ocfs2_dinode *) bh->b_data;
1702
1703 numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total);
1704 freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used);
1705
1706 buf->f_type = OCFS2_SUPER_MAGIC;
David Howells726c3342006-06-23 02:02:58 -07001707 buf->f_bsize = dentry->d_sb->s_blocksize;
Mark Fashehccd979b2005-12-15 14:31:24 -08001708 buf->f_namelen = OCFS2_MAX_FILENAME_LEN;
1709 buf->f_blocks = ((sector_t) numbits) *
1710 (osb->s_clustersize >> osb->sb->s_blocksize_bits);
1711 buf->f_bfree = ((sector_t) freebits) *
1712 (osb->s_clustersize >> osb->sb->s_blocksize_bits);
1713 buf->f_bavail = buf->f_bfree;
1714 buf->f_files = numbits;
1715 buf->f_ffree = freebits;
Coly Li837711f2009-01-16 16:33:05 +08001716 buf->f_fsid.val[0] = crc32_le(0, osb->uuid_str, OCFS2_VOL_UUID_LEN)
1717 & 0xFFFFFFFFUL;
1718 buf->f_fsid.val[1] = crc32_le(0, osb->uuid_str + OCFS2_VOL_UUID_LEN,
1719 OCFS2_VOL_UUID_LEN) & 0xFFFFFFFFUL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001720
1721 brelse(bh);
1722
Mark Fashehe63aecb62007-10-18 15:30:42 -07001723 ocfs2_inode_unlock(inode, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -08001724 status = 0;
1725bail:
1726 if (inode)
1727 iput(inode);
1728
Tao Mac1e8d352011-03-07 16:43:21 +08001729 if (status)
1730 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001731
1732 return status;
1733}
1734
Alexey Dobriyan51cc5062008-07-25 19:45:34 -07001735static void ocfs2_inode_init_once(void *data)
Mark Fashehccd979b2005-12-15 14:31:24 -08001736{
1737 struct ocfs2_inode_info *oi = data;
1738
Christoph Lametera35afb82007-05-16 22:10:57 -07001739 oi->ip_flags = 0;
1740 oi->ip_open_count = 0;
1741 spin_lock_init(&oi->ip_lock);
1742 ocfs2_extent_map_init(&oi->vfs_inode);
1743 INIT_LIST_HEAD(&oi->ip_io_markers);
Christoph Lametera35afb82007-05-16 22:10:57 -07001744 oi->ip_dir_start_lookup = 0;
Wengang Wangc18ceab2014-04-03 14:46:46 -07001745 mutex_init(&oi->ip_unaligned_aio);
Christoph Lametera35afb82007-05-16 22:10:57 -07001746 init_rwsem(&oi->ip_alloc_sem);
Tiger Yangcf1d6c72008-08-18 17:11:00 +08001747 init_rwsem(&oi->ip_xattr_sem);
Christoph Lametera35afb82007-05-16 22:10:57 -07001748 mutex_init(&oi->ip_io_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -08001749
Christoph Lametera35afb82007-05-16 22:10:57 -07001750 oi->ip_blkno = 0ULL;
1751 oi->ip_clusters = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08001752
Mark Fasheh4fe370a2009-12-07 13:15:40 -08001753 ocfs2_resv_init_once(&oi->ip_la_data_resv);
1754
Christoph Lametera35afb82007-05-16 22:10:57 -07001755 ocfs2_lock_res_init_once(&oi->ip_rw_lockres);
Mark Fashehe63aecb62007-10-18 15:30:42 -07001756 ocfs2_lock_res_init_once(&oi->ip_inode_lockres);
Christoph Lametera35afb82007-05-16 22:10:57 -07001757 ocfs2_lock_res_init_once(&oi->ip_open_lockres);
Mark Fashehccd979b2005-12-15 14:31:24 -08001758
Joel Becker8cb471e2009-02-10 20:00:41 -08001759 ocfs2_metadata_cache_init(INODE_CACHE(&oi->vfs_inode),
Joel Becker6e5a3d72009-02-10 19:00:37 -08001760 &ocfs2_inode_caching_ops);
Mark Fashehccd979b2005-12-15 14:31:24 -08001761
Christoph Lametera35afb82007-05-16 22:10:57 -07001762 inode_init_once(&oi->vfs_inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001763}
1764
1765static int ocfs2_initialize_mem_caches(void)
1766{
1767 ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache",
Paul Jacksonfffb60f2006-03-24 03:16:06 -08001768 sizeof(struct ocfs2_inode_info),
1769 0,
1770 (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
1771 SLAB_MEM_SPREAD),
Paul Mundt20c2df82007-07-20 10:11:58 +09001772 ocfs2_inode_init_once);
Jan Kara9e33d692008-08-25 19:56:50 +02001773 ocfs2_dquot_cachep = kmem_cache_create("ocfs2_dquot_cache",
1774 sizeof(struct ocfs2_dquot),
1775 0,
1776 (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
1777 SLAB_MEM_SPREAD),
1778 NULL);
1779 ocfs2_qf_chunk_cachep = kmem_cache_create("ocfs2_qf_chunk_cache",
1780 sizeof(struct ocfs2_quota_chunk),
1781 0,
1782 (SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD),
1783 NULL);
1784 if (!ocfs2_inode_cachep || !ocfs2_dquot_cachep ||
1785 !ocfs2_qf_chunk_cachep) {
1786 if (ocfs2_inode_cachep)
1787 kmem_cache_destroy(ocfs2_inode_cachep);
1788 if (ocfs2_dquot_cachep)
1789 kmem_cache_destroy(ocfs2_dquot_cachep);
1790 if (ocfs2_qf_chunk_cachep)
1791 kmem_cache_destroy(ocfs2_qf_chunk_cachep);
Mark Fashehccd979b2005-12-15 14:31:24 -08001792 return -ENOMEM;
Jan Kara9e33d692008-08-25 19:56:50 +02001793 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001794
Mark Fashehccd979b2005-12-15 14:31:24 -08001795 return 0;
1796}
1797
1798static void ocfs2_free_mem_caches(void)
1799{
Kirill A. Shutemov8c0a8532012-09-26 11:33:07 +10001800 /*
1801 * Make sure all delayed rcu free inodes are flushed before we
1802 * destroy cache.
1803 */
1804 rcu_barrier();
Mark Fashehccd979b2005-12-15 14:31:24 -08001805 if (ocfs2_inode_cachep)
1806 kmem_cache_destroy(ocfs2_inode_cachep);
Mark Fashehccd979b2005-12-15 14:31:24 -08001807 ocfs2_inode_cachep = NULL;
Jan Kara9e33d692008-08-25 19:56:50 +02001808
1809 if (ocfs2_dquot_cachep)
1810 kmem_cache_destroy(ocfs2_dquot_cachep);
1811 ocfs2_dquot_cachep = NULL;
1812
1813 if (ocfs2_qf_chunk_cachep)
1814 kmem_cache_destroy(ocfs2_qf_chunk_cachep);
1815 ocfs2_qf_chunk_cachep = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001816}
1817
1818static int ocfs2_get_sector(struct super_block *sb,
1819 struct buffer_head **bh,
1820 int block,
1821 int sect_size)
1822{
1823 if (!sb_set_blocksize(sb, sect_size)) {
1824 mlog(ML_ERROR, "unable to set blocksize\n");
1825 return -EIO;
1826 }
1827
1828 *bh = sb_getblk(sb, block);
1829 if (!*bh) {
Rui Xiang7391a292013-11-12 15:06:54 -08001830 mlog_errno(-ENOMEM);
1831 return -ENOMEM;
Mark Fashehccd979b2005-12-15 14:31:24 -08001832 }
1833 lock_buffer(*bh);
1834 if (!buffer_dirty(*bh))
1835 clear_buffer_uptodate(*bh);
1836 unlock_buffer(*bh);
1837 ll_rw_block(READ, 1, bh);
1838 wait_on_buffer(*bh);
wengang wang28d57d42009-02-13 10:11:47 +08001839 if (!buffer_uptodate(*bh)) {
1840 mlog_errno(-EIO);
1841 brelse(*bh);
1842 *bh = NULL;
1843 return -EIO;
1844 }
1845
Mark Fashehccd979b2005-12-15 14:31:24 -08001846 return 0;
1847}
1848
Mark Fashehccd979b2005-12-15 14:31:24 -08001849static int ocfs2_mount_volume(struct super_block *sb)
1850{
1851 int status = 0;
1852 int unlock_super = 0;
1853 struct ocfs2_super *osb = OCFS2_SB(sb);
1854
Mark Fashehccd979b2005-12-15 14:31:24 -08001855 if (ocfs2_is_hard_readonly(osb))
1856 goto leave;
1857
Mark Fashehccd979b2005-12-15 14:31:24 -08001858 status = ocfs2_dlm_init(osb);
1859 if (status < 0) {
1860 mlog_errno(status);
1861 goto leave;
1862 }
1863
Mark Fashehccd979b2005-12-15 14:31:24 -08001864 status = ocfs2_super_lock(osb, 1);
1865 if (status < 0) {
1866 mlog_errno(status);
1867 goto leave;
1868 }
1869 unlock_super = 1;
1870
1871 /* This will load up the node map and add ourselves to it. */
1872 status = ocfs2_find_slot(osb);
1873 if (status < 0) {
1874 mlog_errno(status);
1875 goto leave;
1876 }
1877
Mark Fashehccd979b2005-12-15 14:31:24 -08001878 /* load all node-local system inodes */
1879 status = ocfs2_init_local_system_inodes(osb);
1880 if (status < 0) {
1881 mlog_errno(status);
1882 goto leave;
1883 }
1884
1885 status = ocfs2_check_volume(osb);
1886 if (status < 0) {
1887 mlog_errno(status);
1888 goto leave;
1889 }
1890
1891 status = ocfs2_truncate_log_init(osb);
Tao Ma06c59bb2009-05-19 06:47:20 +08001892 if (status < 0)
Mark Fashehccd979b2005-12-15 14:31:24 -08001893 mlog_errno(status);
Sunil Mushranc271c5c2006-12-05 17:56:35 -08001894
Mark Fashehccd979b2005-12-15 14:31:24 -08001895leave:
1896 if (unlock_super)
1897 ocfs2_super_unlock(osb, 1);
1898
Mark Fashehccd979b2005-12-15 14:31:24 -08001899 return status;
1900}
1901
Mark Fashehccd979b2005-12-15 14:31:24 -08001902static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err)
1903{
Joel Becker286eaa92008-02-01 15:03:57 -08001904 int tmp, hangup_needed = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08001905 struct ocfs2_super *osb = NULL;
Goldwyn Rodrigues99d7a882013-09-24 15:27:32 -07001906 char nodestr[12];
Mark Fashehccd979b2005-12-15 14:31:24 -08001907
Tao Ma32a42d32011-02-23 21:29:08 +08001908 trace_ocfs2_dismount_volume(sb);
Mark Fashehccd979b2005-12-15 14:31:24 -08001909
1910 BUG_ON(!sb);
1911 osb = OCFS2_SB(sb);
1912 BUG_ON(!osb);
1913
Sunil Mushran50397502008-12-17 14:17:43 -08001914 debugfs_remove(osb->osb_ctxt);
1915
Sunil Mushran692684e2009-06-19 16:53:17 -07001916 /* Orphan scan should be stopped as early as possible */
1917 ocfs2_orphan_scan_stop(osb);
1918
Jan Kara19ece542008-08-21 20:13:17 +02001919 ocfs2_disable_quotas(osb);
1920
Jan Karae3a767b2014-04-03 14:46:56 -07001921 /* All dquots should be freed by now */
1922 WARN_ON(!llist_empty(&osb->dquot_drop_list));
1923 /* Wait for worker to be done with the work structure in osb */
1924 cancel_work_sync(&osb->dquot_drop_work);
1925
Mark Fashehccd979b2005-12-15 14:31:24 -08001926 ocfs2_shutdown_local_alloc(osb);
1927
Xue jiufeib253bfd2014-06-23 13:22:08 -07001928 ocfs2_truncate_log_shutdown(osb);
1929
Joel Becker553abd02008-02-01 12:03:57 -08001930 /* This will disable recovery and flush any recovery work. */
1931 ocfs2_recovery_exit(osb);
Mark Fashehccd979b2005-12-15 14:31:24 -08001932
1933 ocfs2_journal_shutdown(osb);
1934
1935 ocfs2_sync_blockdev(sb);
1936
Tao Ma374a2632009-08-24 11:13:37 +08001937 ocfs2_purge_refcount_trees(osb);
1938
Joel Becker4670c462008-02-01 14:39:35 -08001939 /* No cluster connection means we've failed during mount, so skip
1940 * all the steps which depended on that to complete. */
1941 if (osb->cconn) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001942 tmp = ocfs2_super_lock(osb, 1);
1943 if (tmp < 0) {
1944 mlog_errno(tmp);
1945 return;
1946 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001947 }
1948
Mark Fasheh19b613d2007-10-04 14:47:09 -07001949 if (osb->slot_num != OCFS2_INVALID_SLOT)
1950 ocfs2_put_slot(osb);
1951
Joel Becker4670c462008-02-01 14:39:35 -08001952 if (osb->cconn)
Mark Fasheh19b613d2007-10-04 14:47:09 -07001953 ocfs2_super_unlock(osb, 1);
1954
Mark Fashehccd979b2005-12-15 14:31:24 -08001955 ocfs2_release_system_inodes(osb);
1956
Joel Becker6953b4c2008-01-29 16:59:56 -08001957 /*
Joel Becker6953b4c2008-01-29 16:59:56 -08001958 * If we're dismounting due to mount error, mount.ocfs2 will clean
1959 * up heartbeat. If we're a local mount, there is no heartbeat.
1960 * If we failed before we got a uuid_str yet, we can't stop
1961 * heartbeat. Otherwise, do it.
1962 */
Tiger Yang03efed82011-05-28 00:34:19 +08001963 if (!mnt_err && !ocfs2_mount_local(osb) && osb->uuid_str &&
1964 !ocfs2_is_hard_readonly(osb))
Joel Becker286eaa92008-02-01 15:03:57 -08001965 hangup_needed = 1;
1966
1967 if (osb->cconn)
1968 ocfs2_dlm_shutdown(osb, hangup_needed);
1969
Joel Becker73be1922009-01-06 14:57:08 -08001970 ocfs2_blockcheck_stats_debugfs_remove(&osb->osb_ecc_stats);
Joel Becker286eaa92008-02-01 15:03:57 -08001971 debugfs_remove(osb->osb_debug_root);
1972
1973 if (hangup_needed)
Joel Becker6953b4c2008-01-29 16:59:56 -08001974 ocfs2_cluster_hangup(osb->uuid_str, strlen(osb->uuid_str));
Mark Fashehccd979b2005-12-15 14:31:24 -08001975
1976 atomic_set(&osb->vol_state, VOLUME_DISMOUNTED);
1977
Sunil Mushranc271c5c2006-12-05 17:56:35 -08001978 if (ocfs2_mount_local(osb))
1979 snprintf(nodestr, sizeof(nodestr), "local");
1980 else
Joel Becker19fdb622008-01-30 15:38:24 -08001981 snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num);
Sunil Mushranc271c5c2006-12-05 17:56:35 -08001982
1983 printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %s)\n",
1984 osb->dev_str, nodestr);
Mark Fashehccd979b2005-12-15 14:31:24 -08001985
1986 ocfs2_delete_osb(osb);
1987 kfree(osb);
1988 sb->s_dev = 0;
1989 sb->s_fs_info = NULL;
1990}
1991
1992static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid,
1993 unsigned uuid_bytes)
1994{
1995 int i, ret;
1996 char *ptr;
1997
1998 BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN);
1999
Robert P. J. Daycd861282006-12-13 00:34:52 -08002000 osb->uuid_str = kzalloc(OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL);
Mark Fashehccd979b2005-12-15 14:31:24 -08002001 if (osb->uuid_str == NULL)
2002 return -ENOMEM;
2003
Mark Fashehccd979b2005-12-15 14:31:24 -08002004 for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) {
2005 /* print with null */
2006 ret = snprintf(ptr, 3, "%02X", uuid[i]);
2007 if (ret != 2) /* drop super cleans up */
2008 return -EINVAL;
2009 /* then only advance past the last char */
2010 ptr += 2;
2011 }
2012
2013 return 0;
2014}
2015
Patrick J. LoPresti3bdb8ef2010-07-22 15:05:57 -07002016/* Make sure entire volume is addressable by our journal. Requires
2017 osb_clusters_at_boot to be valid and for the journal to have been
2018 initialized by ocfs2_journal_init(). */
2019static int ocfs2_journal_addressable(struct ocfs2_super *osb)
2020{
2021 int status = 0;
2022 u64 max_block =
2023 ocfs2_clusters_to_blocks(osb->sb,
2024 osb->osb_clusters_at_boot) - 1;
2025
2026 /* 32-bit block number is always OK. */
2027 if (max_block <= (u32)~0ULL)
2028 goto out;
2029
2030 /* Volume is "huge", so see if our journal is new enough to
2031 support it. */
2032 if (!(OCFS2_HAS_COMPAT_FEATURE(osb->sb,
2033 OCFS2_FEATURE_COMPAT_JBD2_SB) &&
2034 jbd2_journal_check_used_features(osb->journal->j_journal, 0, 0,
2035 JBD2_FEATURE_INCOMPAT_64BIT))) {
2036 mlog(ML_ERROR, "The journal cannot address the entire volume. "
2037 "Enable the 'block64' journal option with tunefs.ocfs2");
2038 status = -EFBIG;
2039 goto out;
2040 }
2041
2042 out:
2043 return status;
2044}
2045
Mark Fashehccd979b2005-12-15 14:31:24 -08002046static int ocfs2_initialize_super(struct super_block *sb,
2047 struct buffer_head *bh,
Joel Becker73be1922009-01-06 14:57:08 -08002048 int sector_size,
2049 struct ocfs2_blockcheck_stats *stats)
Mark Fashehccd979b2005-12-15 14:31:24 -08002050{
Denis Chengbddb8eb32007-09-27 02:10:04 +08002051 int status;
Mark Fasheh5a254032007-07-20 12:56:16 -07002052 int i, cbits, bbits;
2053 struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data;
Mark Fashehccd979b2005-12-15 14:31:24 -08002054 struct inode *inode = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08002055 struct ocfs2_journal *journal;
Mark Fashehccd979b2005-12-15 14:31:24 -08002056 struct ocfs2_super *osb;
Patrick J. LoPresti3bdb8ef2010-07-22 15:05:57 -07002057 u64 total_blocks;
Mark Fashehccd979b2005-12-15 14:31:24 -08002058
Robert P. J. Daycd861282006-12-13 00:34:52 -08002059 osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL);
Mark Fashehccd979b2005-12-15 14:31:24 -08002060 if (!osb) {
2061 status = -ENOMEM;
2062 mlog_errno(status);
2063 goto bail;
2064 }
2065
2066 sb->s_fs_info = osb;
2067 sb->s_op = &ocfs2_sops;
Al Viroba871672010-12-18 12:10:00 -05002068 sb->s_d_op = &ocfs2_dentry_ops;
Mark Fashehccd979b2005-12-15 14:31:24 -08002069 sb->s_export_op = &ocfs2_export_ops;
Jan Kara19ece542008-08-21 20:13:17 +02002070 sb->s_qcop = &ocfs2_quotactl_ops;
2071 sb->dq_op = &ocfs2_quota_operations;
Tiger Yangcf1d6c72008-08-18 17:11:00 +08002072 sb->s_xattr = ocfs2_xattr_handlers;
Mark Fashehe0dceaf2007-08-09 16:52:30 -07002073 sb->s_time_gran = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -08002074 sb->s_flags |= MS_NOATIME;
2075 /* this is needed to support O_LARGEFILE */
Mark Fasheh5a254032007-07-20 12:56:16 -07002076 cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits);
2077 bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits);
2078 sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits);
Mark Fashehccd979b2005-12-15 14:31:24 -08002079
Mark Fasheh9b7895e2008-11-12 16:27:44 -08002080 osb->osb_dx_mask = (1 << (cbits - bbits)) - 1;
2081
2082 for (i = 0; i < 3; i++)
2083 osb->osb_dx_seed[i] = le32_to_cpu(di->id2.i_super.s_dx_seed[i]);
2084 osb->osb_dx_seed[3] = le32_to_cpu(di->id2.i_super.s_uuid_hash);
2085
Mark Fashehccd979b2005-12-15 14:31:24 -08002086 osb->sb = sb;
2087 /* Save off for ocfs2_rw_direct */
2088 osb->s_sectsize_bits = blksize_bits(sector_size);
Eric Sesterhenn / snakebyteebdec832006-01-27 10:32:52 +01002089 BUG_ON(!osb->s_sectsize_bits);
Mark Fashehccd979b2005-12-15 14:31:24 -08002090
Mark Fasheh34d024f2007-09-24 15:56:19 -07002091 spin_lock_init(&osb->dc_task_lock);
2092 init_waitqueue_head(&osb->dc_event);
2093 osb->dc_work_sequence = 0;
2094 osb->dc_wake_sequence = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08002095 INIT_LIST_HEAD(&osb->blocked_lock_list);
2096 osb->blocked_lock_count = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08002097 spin_lock_init(&osb->osb_lock);
Tao Mac8b9cf92009-02-24 17:40:26 -08002098 spin_lock_init(&osb->osb_xattr_lock);
Tiger Yangb89c5422010-01-25 14:11:06 +08002099 ocfs2_init_steal_slots(osb);
Mark Fashehccd979b2005-12-15 14:31:24 -08002100
jiangyiwen43b10a22014-04-03 14:47:13 -07002101 mutex_init(&osb->system_file_mutex);
2102
Mark Fashehccd979b2005-12-15 14:31:24 -08002103 atomic_set(&osb->alloc_stats.moves, 0);
2104 atomic_set(&osb->alloc_stats.local_data, 0);
2105 atomic_set(&osb->alloc_stats.bitmap_data, 0);
2106 atomic_set(&osb->alloc_stats.bg_allocs, 0);
2107 atomic_set(&osb->alloc_stats.bg_extends, 0);
2108
Joel Becker73be1922009-01-06 14:57:08 -08002109 /* Copy the blockcheck stats from the superblock probe */
2110 osb->osb_ecc_stats = *stats;
2111
Mark Fashehccd979b2005-12-15 14:31:24 -08002112 ocfs2_init_node_maps(osb);
2113
2114 snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u",
2115 MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev));
2116
Goldwyn Rodrigues75d9bbc2010-10-11 12:57:09 -05002117 osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots);
2118 if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) {
2119 mlog(ML_ERROR, "Invalid number of node slots (%u)\n",
2120 osb->max_slots);
2121 status = -EINVAL;
2122 goto bail;
2123 }
Goldwyn Rodrigues75d9bbc2010-10-11 12:57:09 -05002124
Jeff Mahoney8b712cd2009-07-07 17:22:12 -04002125 ocfs2_orphan_scan_init(osb);
2126
Joel Becker553abd02008-02-01 12:03:57 -08002127 status = ocfs2_recovery_init(osb);
2128 if (status) {
2129 mlog(ML_ERROR, "Unable to initialize recovery state\n");
2130 mlog_errno(status);
2131 goto bail;
2132 }
Mark Fashehccd979b2005-12-15 14:31:24 -08002133
2134 init_waitqueue_head(&osb->checkpoint_event);
Mark Fashehccd979b2005-12-15 14:31:24 -08002135
Tiger Yang7f1a37e2006-11-15 15:48:42 +08002136 osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
2137
Mark Fashehccd979b2005-12-15 14:31:24 -08002138 osb->slot_num = OCFS2_INVALID_SLOT;
2139
Tiger Yang8154da32008-08-18 17:11:46 +08002140 osb->s_xattr_inline_size = le16_to_cpu(
2141 di->id2.i_super.s_xattr_inline_size);
Tiger Yangfdd77702008-08-18 17:08:55 +08002142
Mark Fashehccd979b2005-12-15 14:31:24 -08002143 osb->local_alloc_state = OCFS2_LA_UNUSED;
2144 osb->local_alloc_bh = NULL;
Mark Fasheh9c7af402008-07-28 18:02:53 -07002145 INIT_DELAYED_WORK(&osb->la_enable_wq, ocfs2_la_enable_worker);
Mark Fashehccd979b2005-12-15 14:31:24 -08002146
Mark Fashehccd979b2005-12-15 14:31:24 -08002147 init_waitqueue_head(&osb->osb_mount_event);
2148
Mark Fashehd02f00c2009-12-07 13:10:48 -08002149 status = ocfs2_resmap_init(osb, &osb->osb_la_resmap);
2150 if (status) {
2151 mlog_errno(status);
2152 goto bail;
2153 }
2154
Mark Fashehccd979b2005-12-15 14:31:24 -08002155 osb->vol_label = kmalloc(OCFS2_MAX_VOL_LABEL_LEN, GFP_KERNEL);
2156 if (!osb->vol_label) {
2157 mlog(ML_ERROR, "unable to alloc vol label\n");
2158 status = -ENOMEM;
2159 goto bail;
2160 }
2161
Sunil Mushran539d8262008-07-14 17:31:10 -07002162 osb->slot_recovery_generations =
2163 kcalloc(osb->max_slots, sizeof(*osb->slot_recovery_generations),
2164 GFP_KERNEL);
2165 if (!osb->slot_recovery_generations) {
2166 status = -ENOMEM;
2167 mlog_errno(status);
2168 goto bail;
2169 }
2170
Mark Fashehb4df6ed2006-02-22 17:35:08 -08002171 init_waitqueue_head(&osb->osb_wipe_event);
2172 osb->osb_orphan_wipes = kcalloc(osb->max_slots,
2173 sizeof(*osb->osb_orphan_wipes),
2174 GFP_KERNEL);
2175 if (!osb->osb_orphan_wipes) {
2176 status = -ENOMEM;
2177 mlog_errno(status);
2178 goto bail;
2179 }
2180
Tao Ma374a2632009-08-24 11:13:37 +08002181 osb->osb_rf_lock_tree = RB_ROOT;
2182
Mark Fashehccd979b2005-12-15 14:31:24 -08002183 osb->s_feature_compat =
2184 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_compat);
2185 osb->s_feature_ro_compat =
2186 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_ro_compat);
2187 osb->s_feature_incompat =
2188 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_incompat);
2189
2190 if ((i = OCFS2_HAS_INCOMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_INCOMPAT_SUPP))) {
2191 mlog(ML_ERROR, "couldn't mount because of unsupported "
2192 "optional features (%x).\n", i);
2193 status = -EINVAL;
2194 goto bail;
2195 }
2196 if (!(osb->sb->s_flags & MS_RDONLY) &&
2197 (i = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP))) {
2198 mlog(ML_ERROR, "couldn't mount RDWR because of "
2199 "unsupported optional features (%x).\n", i);
2200 status = -EINVAL;
2201 goto bail;
2202 }
2203
Sunil Mushran98f486f22010-10-09 10:24:46 -07002204 if (ocfs2_clusterinfo_valid(osb)) {
2205 osb->osb_stackflags =
2206 OCFS2_RAW_SB(di)->s_cluster_info.ci_stackflags;
Goldwyn Rodriguesc74a3bd2014-01-21 15:48:21 -08002207 strlcpy(osb->osb_cluster_stack,
Joel Beckerb61817e2008-02-01 15:08:23 -08002208 OCFS2_RAW_SB(di)->s_cluster_info.ci_stack,
Goldwyn Rodriguesc74a3bd2014-01-21 15:48:21 -08002209 OCFS2_STACK_LABEL_LEN + 1);
Joel Beckerb61817e2008-02-01 15:08:23 -08002210 if (strlen(osb->osb_cluster_stack) != OCFS2_STACK_LABEL_LEN) {
2211 mlog(ML_ERROR,
2212 "couldn't mount because of an invalid "
2213 "cluster stack label (%s) \n",
2214 osb->osb_cluster_stack);
2215 status = -EINVAL;
2216 goto bail;
2217 }
Goldwyn Rodriguesc74a3bd2014-01-21 15:48:21 -08002218 strlcpy(osb->osb_cluster_name,
2219 OCFS2_RAW_SB(di)->s_cluster_info.ci_cluster,
2220 OCFS2_CLUSTER_NAME_LEN + 1);
Joel Beckerb61817e2008-02-01 15:08:23 -08002221 } else {
2222 /* The empty string is identical with classic tools that
2223 * don't know about s_cluster_info. */
2224 osb->osb_cluster_stack[0] = '\0';
2225 }
2226
Mark Fashehccd979b2005-12-15 14:31:24 -08002227 get_random_bytes(&osb->s_next_generation, sizeof(u32));
2228
2229 /* FIXME
2230 * This should be done in ocfs2_journal_init(), but unknown
2231 * ordering issues will cause the filesystem to crash.
2232 * If anyone wants to figure out what part of the code
2233 * refers to osb->journal before ocfs2_journal_init() is run,
2234 * be my guest.
2235 */
2236 /* initialize our journal structure */
2237
Robert P. J. Daycd861282006-12-13 00:34:52 -08002238 journal = kzalloc(sizeof(struct ocfs2_journal), GFP_KERNEL);
Mark Fashehccd979b2005-12-15 14:31:24 -08002239 if (!journal) {
2240 mlog(ML_ERROR, "unable to alloc journal\n");
2241 status = -ENOMEM;
2242 goto bail;
2243 }
2244 osb->journal = journal;
2245 journal->j_osb = osb;
2246
2247 atomic_set(&journal->j_num_trans, 0);
2248 init_rwsem(&journal->j_trans_barrier);
2249 init_waitqueue_head(&journal->j_checkpointed);
2250 spin_lock_init(&journal->j_lock);
2251 journal->j_trans_id = (unsigned long) 1;
2252 INIT_LIST_HEAD(&journal->j_la_cleanups);
David Howellsc4028952006-11-22 14:57:56 +00002253 INIT_WORK(&journal->j_recovery_work, ocfs2_complete_recovery);
Mark Fashehccd979b2005-12-15 14:31:24 -08002254 journal->j_state = OCFS2_JOURNAL_FREE;
2255
Jan Karae3a767b2014-04-03 14:46:56 -07002256 INIT_WORK(&osb->dquot_drop_work, ocfs2_drop_dquot_refs);
2257 init_llist_head(&osb->dquot_drop_list);
2258
Mark Fashehccd979b2005-12-15 14:31:24 -08002259 /* get some pseudo constants for clustersize bits */
2260 osb->s_clustersize_bits =
2261 le32_to_cpu(di->id2.i_super.s_clustersize_bits);
2262 osb->s_clustersize = 1 << osb->s_clustersize_bits;
Mark Fashehccd979b2005-12-15 14:31:24 -08002263
2264 if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE ||
2265 osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) {
2266 mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n",
2267 osb->s_clustersize);
2268 status = -EINVAL;
2269 goto bail;
2270 }
2271
Patrick J. LoPresti3bdb8ef2010-07-22 15:05:57 -07002272 total_blocks = ocfs2_clusters_to_blocks(osb->sb,
2273 le32_to_cpu(di->i_clusters));
2274
2275 status = generic_check_addressable(osb->sb->s_blocksize_bits,
2276 total_blocks);
2277 if (status) {
2278 mlog(ML_ERROR, "Volume too large "
2279 "to mount safely on this system");
2280 status = -EFBIG;
Mark Fashehccd979b2005-12-15 14:31:24 -08002281 goto bail;
2282 }
2283
2284 if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid,
2285 sizeof(di->id2.i_super.s_uuid))) {
2286 mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n");
2287 status = -ENOMEM;
2288 goto bail;
2289 }
2290
Fabian Frederick69201bb2014-06-04 16:06:07 -07002291 strlcpy(osb->vol_label, di->id2.i_super.s_label,
2292 OCFS2_MAX_VOL_LABEL_LEN);
Mark Fashehccd979b2005-12-15 14:31:24 -08002293 osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno);
2294 osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno);
2295 osb->first_cluster_group_blkno =
2296 le64_to_cpu(di->id2.i_super.s_first_cluster_group);
2297 osb->fs_generation = le32_to_cpu(di->i_fs_generation);
Tiger Yangcf1d6c72008-08-18 17:11:00 +08002298 osb->uuid_hash = le32_to_cpu(di->id2.i_super.s_uuid_hash);
Tao Ma32a42d32011-02-23 21:29:08 +08002299 trace_ocfs2_initialize_super(osb->vol_label, osb->uuid_str,
2300 (unsigned long long)osb->root_blkno,
2301 (unsigned long long)osb->system_dir_blkno,
2302 osb->s_clustersize_bits);
Mark Fashehccd979b2005-12-15 14:31:24 -08002303
2304 osb->osb_dlm_debug = ocfs2_new_dlm_debug();
2305 if (!osb->osb_dlm_debug) {
2306 status = -ENOMEM;
2307 mlog_errno(status);
2308 goto bail;
2309 }
2310
2311 atomic_set(&osb->vol_state, VOLUME_INIT);
2312
2313 /* load root, system_dir, and all global system inodes */
2314 status = ocfs2_init_global_system_inodes(osb);
2315 if (status < 0) {
2316 mlog_errno(status);
2317 goto bail;
2318 }
2319
2320 /*
2321 * global bitmap
2322 */
2323 inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE,
2324 OCFS2_INVALID_SLOT);
2325 if (!inode) {
2326 status = -EINVAL;
2327 mlog_errno(status);
2328 goto bail;
2329 }
2330
2331 osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno;
Mark Fasheh6b820212010-04-05 18:17:14 -07002332 osb->osb_clusters_at_boot = OCFS2_I(inode)->ip_clusters;
Mark Fashehccd979b2005-12-15 14:31:24 -08002333 iput(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08002334
Tao Ma85718822010-04-13 14:38:06 +08002335 osb->bitmap_cpg = ocfs2_group_bitmap_size(sb, 0,
2336 osb->s_feature_incompat) * 8;
Mark Fashehccd979b2005-12-15 14:31:24 -08002337
2338 status = ocfs2_init_slot_info(osb);
2339 if (status < 0) {
2340 mlog_errno(status);
2341 goto bail;
2342 }
Dan Magenheimere41d33a2011-10-17 16:47:17 -07002343 cleancache_init_shared_fs((char *)&di->id2.i_super.s_uuid, sb);
Mark Fashehccd979b2005-12-15 14:31:24 -08002344
Mark Fashehccd979b2005-12-15 14:31:24 -08002345bail:
Mark Fashehccd979b2005-12-15 14:31:24 -08002346 return status;
2347}
2348
2349/*
2350 * will return: -EAGAIN if it is ok to keep searching for superblocks
2351 * -EINVAL if there is a bad superblock
2352 * 0 on success
2353 */
2354static int ocfs2_verify_volume(struct ocfs2_dinode *di,
2355 struct buffer_head *bh,
Joel Becker73be1922009-01-06 14:57:08 -08002356 u32 blksz,
2357 struct ocfs2_blockcheck_stats *stats)
Mark Fashehccd979b2005-12-15 14:31:24 -08002358{
2359 int status = -EAGAIN;
2360
Mark Fashehccd979b2005-12-15 14:31:24 -08002361 if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE,
2362 strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) {
Joel Beckerd030cc92008-12-11 15:04:14 -08002363 /* We have to do a raw check of the feature here */
2364 if (le32_to_cpu(di->id2.i_super.s_feature_incompat) &
2365 OCFS2_FEATURE_INCOMPAT_META_ECC) {
2366 status = ocfs2_block_check_validate(bh->b_data,
2367 bh->b_size,
Joel Becker73be1922009-01-06 14:57:08 -08002368 &di->i_check,
2369 stats);
Joel Beckerd030cc92008-12-11 15:04:14 -08002370 if (status)
2371 goto out;
2372 }
Mark Fashehccd979b2005-12-15 14:31:24 -08002373 status = -EINVAL;
2374 if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) {
2375 mlog(ML_ERROR, "found superblock with incorrect block "
2376 "size: found %u, should be %u\n",
2377 1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits),
2378 blksz);
2379 } else if (le16_to_cpu(di->id2.i_super.s_major_rev_level) !=
2380 OCFS2_MAJOR_REV_LEVEL ||
2381 le16_to_cpu(di->id2.i_super.s_minor_rev_level) !=
2382 OCFS2_MINOR_REV_LEVEL) {
2383 mlog(ML_ERROR, "found superblock with bad version: "
2384 "found %u.%u, should be %u.%u\n",
2385 le16_to_cpu(di->id2.i_super.s_major_rev_level),
2386 le16_to_cpu(di->id2.i_super.s_minor_rev_level),
2387 OCFS2_MAJOR_REV_LEVEL,
2388 OCFS2_MINOR_REV_LEVEL);
2389 } else if (bh->b_blocknr != le64_to_cpu(di->i_blkno)) {
2390 mlog(ML_ERROR, "bad block number on superblock: "
Mark Fashehb06970532006-03-03 10:24:33 -08002391 "found %llu, should be %llu\n",
Mark Fasheh1ca1a112007-04-27 16:01:25 -07002392 (unsigned long long)le64_to_cpu(di->i_blkno),
Mark Fashehb06970532006-03-03 10:24:33 -08002393 (unsigned long long)bh->b_blocknr);
Mark Fashehccd979b2005-12-15 14:31:24 -08002394 } else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 ||
2395 le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) {
2396 mlog(ML_ERROR, "bad cluster size found: %u\n",
2397 1 << le32_to_cpu(di->id2.i_super.s_clustersize_bits));
2398 } else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) {
2399 mlog(ML_ERROR, "bad root_blkno: 0\n");
2400 } else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) {
2401 mlog(ML_ERROR, "bad system_dir_blkno: 0\n");
2402 } else if (le16_to_cpu(di->id2.i_super.s_max_slots) > OCFS2_MAX_SLOTS) {
2403 mlog(ML_ERROR,
2404 "Superblock slots found greater than file system "
2405 "maximum: found %u, max %u\n",
2406 le16_to_cpu(di->id2.i_super.s_max_slots),
2407 OCFS2_MAX_SLOTS);
2408 } else {
2409 /* found it! */
2410 status = 0;
2411 }
2412 }
2413
Joel Beckerd030cc92008-12-11 15:04:14 -08002414out:
Tao Mac1e8d352011-03-07 16:43:21 +08002415 if (status && status != -EAGAIN)
2416 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08002417 return status;
2418}
2419
2420static int ocfs2_check_volume(struct ocfs2_super *osb)
2421{
Denis Chengbddb8eb32007-09-27 02:10:04 +08002422 int status;
Mark Fashehccd979b2005-12-15 14:31:24 -08002423 int dirty;
Sunil Mushranc271c5c2006-12-05 17:56:35 -08002424 int local;
Mark Fashehccd979b2005-12-15 14:31:24 -08002425 struct ocfs2_dinode *local_alloc = NULL; /* only used if we
2426 * recover
2427 * ourselves. */
2428
Mark Fashehccd979b2005-12-15 14:31:24 -08002429 /* Init our journal object. */
2430 status = ocfs2_journal_init(osb->journal, &dirty);
2431 if (status < 0) {
2432 mlog(ML_ERROR, "Could not initialize journal!\n");
2433 goto finally;
2434 }
2435
Patrick J. LoPresti3bdb8ef2010-07-22 15:05:57 -07002436 /* Now that journal has been initialized, check to make sure
2437 entire volume is addressable. */
2438 status = ocfs2_journal_addressable(osb);
2439 if (status)
2440 goto finally;
2441
Mark Fashehccd979b2005-12-15 14:31:24 -08002442 /* If the journal was unmounted cleanly then we don't want to
2443 * recover anything. Otherwise, journal_load will do that
2444 * dirty work for us :) */
2445 if (!dirty) {
2446 status = ocfs2_journal_wipe(osb->journal, 0);
2447 if (status < 0) {
2448 mlog_errno(status);
2449 goto finally;
2450 }
2451 } else {
Sunil Mushran619c2002011-07-24 10:34:54 -07002452 printk(KERN_NOTICE "ocfs2: File system on device (%s) was not "
2453 "unmounted cleanly, recovering it.\n", osb->dev_str);
Mark Fashehccd979b2005-12-15 14:31:24 -08002454 }
2455
Sunil Mushranc271c5c2006-12-05 17:56:35 -08002456 local = ocfs2_mount_local(osb);
2457
Mark Fashehccd979b2005-12-15 14:31:24 -08002458 /* will play back anything left in the journal. */
Sunil Mushran539d8262008-07-14 17:31:10 -07002459 status = ocfs2_journal_load(osb->journal, local, dirty);
Wengang Wang01af4822008-06-10 14:24:48 +08002460 if (status < 0) {
2461 mlog(ML_ERROR, "ocfs2 journal load failed! %d\n", status);
2462 goto finally;
2463 }
Mark Fashehccd979b2005-12-15 14:31:24 -08002464
2465 if (dirty) {
2466 /* recover my local alloc if we didn't unmount cleanly. */
2467 status = ocfs2_begin_local_alloc_recovery(osb,
2468 osb->slot_num,
2469 &local_alloc);
2470 if (status < 0) {
2471 mlog_errno(status);
2472 goto finally;
2473 }
2474 /* we complete the recovery process after we've marked
2475 * ourselves as mounted. */
2476 }
2477
Mark Fashehccd979b2005-12-15 14:31:24 -08002478 status = ocfs2_load_local_alloc(osb);
2479 if (status < 0) {
2480 mlog_errno(status);
2481 goto finally;
2482 }
2483
2484 if (dirty) {
2485 /* Recovery will be completed after we've mounted the
2486 * rest of the volume. */
2487 osb->dirty = 1;
2488 osb->local_alloc_copy = local_alloc;
2489 local_alloc = NULL;
2490 }
2491
2492 /* go through each journal, trylock it and if you get the
2493 * lock, and it's marked as dirty, set the bit in the recover
2494 * map and launch a recovery thread for it. */
2495 status = ocfs2_mark_dead_nodes(osb);
Srinivas Eeda9140db02009-03-06 14:21:46 -08002496 if (status < 0) {
2497 mlog_errno(status);
2498 goto finally;
2499 }
2500
2501 status = ocfs2_compute_replay_slots(osb);
Mark Fashehccd979b2005-12-15 14:31:24 -08002502 if (status < 0)
2503 mlog_errno(status);
2504
2505finally:
Tim Gardnerd787ab02013-02-21 16:42:44 -08002506 kfree(local_alloc);
Mark Fashehccd979b2005-12-15 14:31:24 -08002507
Tao Mac1e8d352011-03-07 16:43:21 +08002508 if (status)
2509 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08002510 return status;
2511}
2512
2513/*
2514 * The routine gets called from dismount or close whenever a dismount on
2515 * volume is requested and the osb open count becomes 1.
2516 * It will remove the osb from the global list and also free up all the
2517 * initialized resources and fileobject.
2518 */
2519static void ocfs2_delete_osb(struct ocfs2_super *osb)
2520{
Mark Fashehccd979b2005-12-15 14:31:24 -08002521 /* This function assumes that the caller has the main osb resource */
2522
Mark Fasheh8e8a4602008-02-01 11:59:09 -08002523 ocfs2_free_slot_info(osb);
Mark Fashehccd979b2005-12-15 14:31:24 -08002524
Mark Fashehb4df6ed2006-02-22 17:35:08 -08002525 kfree(osb->osb_orphan_wipes);
Sunil Mushran539d8262008-07-14 17:31:10 -07002526 kfree(osb->slot_recovery_generations);
Mark Fashehccd979b2005-12-15 14:31:24 -08002527 /* FIXME
2528 * This belongs in journal shutdown, but because we have to
Uwe Kleine-König421f91d2010-06-11 12:17:00 +02002529 * allocate osb->journal at the start of ocfs2_initialize_osb(),
Mark Fashehccd979b2005-12-15 14:31:24 -08002530 * we free it here.
2531 */
2532 kfree(osb->journal);
Tim Gardnerd787ab02013-02-21 16:42:44 -08002533 kfree(osb->local_alloc_copy);
Mark Fashehccd979b2005-12-15 14:31:24 -08002534 kfree(osb->uuid_str);
2535 ocfs2_put_dlm_debug(osb->osb_dlm_debug);
2536 memset(osb, 0, sizeof(struct ocfs2_super));
Mark Fashehccd979b2005-12-15 14:31:24 -08002537}
2538
2539/* Put OCFS2 into a readonly state, or (if the user specifies it),
2540 * panic(). We do not support continue-on-error operation. */
2541static void ocfs2_handle_error(struct super_block *sb)
2542{
2543 struct ocfs2_super *osb = OCFS2_SB(sb);
2544
2545 if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_PANIC)
2546 panic("OCFS2: (device %s): panic forced after error\n",
2547 sb->s_id);
2548
2549 ocfs2_set_osb_flag(osb, OCFS2_OSB_ERROR_FS);
2550
2551 if (sb->s_flags & MS_RDONLY &&
2552 (ocfs2_is_soft_readonly(osb) ||
2553 ocfs2_is_hard_readonly(osb)))
2554 return;
2555
2556 printk(KERN_CRIT "File system is now read-only due to the potential "
2557 "of on-disk corruption. Please run fsck.ocfs2 once the file "
2558 "system is unmounted.\n");
2559 sb->s_flags |= MS_RDONLY;
2560 ocfs2_set_ro_flag(osb, 0);
2561}
2562
2563static char error_buf[1024];
2564
2565void __ocfs2_error(struct super_block *sb,
2566 const char *function,
2567 const char *fmt, ...)
2568{
2569 va_list args;
2570
2571 va_start(args, fmt);
Alexey Dobriyan4a6e6172006-12-06 20:37:04 -08002572 vsnprintf(error_buf, sizeof(error_buf), fmt, args);
Mark Fashehccd979b2005-12-15 14:31:24 -08002573 va_end(args);
2574
2575 /* Not using mlog here because we want to show the actual
2576 * function the error came from. */
2577 printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %s\n",
2578 sb->s_id, function, error_buf);
2579
2580 ocfs2_handle_error(sb);
2581}
2582
2583/* Handle critical errors. This is intentionally more drastic than
2584 * ocfs2_handle_error, so we only use for things like journal errors,
2585 * etc. */
2586void __ocfs2_abort(struct super_block* sb,
2587 const char *function,
2588 const char *fmt, ...)
2589{
2590 va_list args;
2591
2592 va_start(args, fmt);
Alexey Dobriyan4a6e6172006-12-06 20:37:04 -08002593 vsnprintf(error_buf, sizeof(error_buf), fmt, args);
Mark Fashehccd979b2005-12-15 14:31:24 -08002594 va_end(args);
2595
2596 printk(KERN_CRIT "OCFS2: abort (device %s): %s: %s\n",
2597 sb->s_id, function, error_buf);
2598
2599 /* We don't have the cluster support yet to go straight to
2600 * hard readonly in here. Until then, we want to keep
2601 * ocfs2_abort() so that we can at least mark critical
2602 * errors.
2603 *
2604 * TODO: This should abort the journal and alert other nodes
2605 * that our slot needs recovery. */
2606
2607 /* Force a panic(). This stinks, but it's better than letting
2608 * things continue without having a proper hard readonly
2609 * here. */
Sunil Mushrana2f2ddb2009-08-19 15:16:01 -07002610 if (!ocfs2_mount_local(OCFS2_SB(sb)))
2611 OCFS2_SB(sb)->s_mount_opt |= OCFS2_MOUNT_ERRORS_PANIC;
Mark Fashehccd979b2005-12-15 14:31:24 -08002612 ocfs2_handle_error(sb);
2613}
2614
Joel Beckere4b963f2009-09-02 17:17:36 -07002615/*
2616 * Void signal blockers, because in-kernel sigprocmask() only fails
2617 * when SIG_* is wrong.
2618 */
2619void ocfs2_block_signals(sigset_t *oldset)
2620{
2621 int rc;
2622 sigset_t blocked;
2623
2624 sigfillset(&blocked);
2625 rc = sigprocmask(SIG_BLOCK, &blocked, oldset);
2626 BUG_ON(rc);
2627}
2628
2629void ocfs2_unblock_signals(sigset_t *oldset)
2630{
2631 int rc = sigprocmask(SIG_SETMASK, oldset, NULL);
2632 BUG_ON(rc);
2633}
2634
Mark Fashehccd979b2005-12-15 14:31:24 -08002635module_init(ocfs2_init);
2636module_exit(ocfs2_exit);