blob: 56f61027236b696fce1ccde3e1edaf86acee59a0 [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"
Joel Beckerd030cc92008-12-11 15:04:14 -080057#include "blockcheck.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080058#include "dlmglue.h"
59#include "export.h"
60#include "extent_map.h"
61#include "heartbeat.h"
62#include "inode.h"
63#include "journal.h"
64#include "localalloc.h"
65#include "namei.h"
66#include "slot_map.h"
67#include "super.h"
68#include "sysfile.h"
69#include "uptodate.h"
70#include "ver.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
Christoph Lametere18b8902006-12-06 20:33:20 -080078static struct kmem_cache *ocfs2_inode_cachep = NULL;
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
88static struct dentry *ocfs2_debugfs_root = NULL;
89
90MODULE_AUTHOR("Oracle");
91MODULE_LICENSE("GPL");
92
Tiger Yangc0123ad2007-09-08 00:16:10 +080093struct mount_options
94{
Mark Fashehd147b3d2007-11-07 14:40:36 -080095 unsigned long commit_interval;
Tiger Yangc0123ad2007-09-08 00:16:10 +080096 unsigned long mount_opt;
97 unsigned int atime_quantum;
98 signed short slot;
Mark Fasheh73c8a802010-04-05 18:17:13 -070099 int localalloc_opt;
Mark Fashehd02f00c2009-12-07 13:10:48 -0800100 unsigned int resv_level;
Mark Fasheh83f92312010-04-05 18:17:16 -0700101 int dir_resv_level;
Joel Beckerb61817e2008-02-01 15:08:23 -0800102 char cluster_stack[OCFS2_STACK_LABEL_LEN + 1];
Tiger Yangc0123ad2007-09-08 00:16:10 +0800103};
104
Mark Fashehccd979b2005-12-15 14:31:24 -0800105static int ocfs2_parse_options(struct super_block *sb, char *options,
Tiger Yangc0123ad2007-09-08 00:16:10 +0800106 struct mount_options *mopt,
Sunil Mushranbaf46612007-06-18 17:00:24 -0700107 int is_remount);
Jan Kara5297aad2009-10-15 14:54:04 +0200108static int ocfs2_check_set_options(struct super_block *sb,
109 struct mount_options *options);
Sunil Mushrand5500712007-09-06 13:34:16 -0700110static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt);
Mark Fashehccd979b2005-12-15 14:31:24 -0800111static void ocfs2_put_super(struct super_block *sb);
112static int ocfs2_mount_volume(struct super_block *sb);
113static int ocfs2_remount(struct super_block *sb, int *flags, char *data);
114static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err);
115static int ocfs2_initialize_mem_caches(void);
116static void ocfs2_free_mem_caches(void);
117static void ocfs2_delete_osb(struct ocfs2_super *osb);
118
David Howells726c3342006-06-23 02:02:58 -0700119static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf);
Mark Fashehccd979b2005-12-15 14:31:24 -0800120
121static int ocfs2_sync_fs(struct super_block *sb, int wait);
122
123static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb);
124static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb);
Denis Chengbddb8eb32007-09-27 02:10:04 +0800125static void ocfs2_release_system_inodes(struct ocfs2_super *osb);
Mark Fashehccd979b2005-12-15 14:31:24 -0800126static int ocfs2_check_volume(struct ocfs2_super *osb);
127static int ocfs2_verify_volume(struct ocfs2_dinode *di,
128 struct buffer_head *bh,
Joel Becker73be1922009-01-06 14:57:08 -0800129 u32 sectsize,
130 struct ocfs2_blockcheck_stats *stats);
Mark Fashehccd979b2005-12-15 14:31:24 -0800131static int ocfs2_initialize_super(struct super_block *sb,
132 struct buffer_head *bh,
Joel Becker73be1922009-01-06 14:57:08 -0800133 int sector_size,
134 struct ocfs2_blockcheck_stats *stats);
Mark Fashehccd979b2005-12-15 14:31:24 -0800135static int ocfs2_get_sector(struct super_block *sb,
136 struct buffer_head **bh,
137 int block,
138 int sect_size);
Mark Fashehccd979b2005-12-15 14:31:24 -0800139static struct inode *ocfs2_alloc_inode(struct super_block *sb);
140static void ocfs2_destroy_inode(struct inode *inode);
Jan Kara19ece542008-08-21 20:13:17 +0200141static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend);
142static int ocfs2_enable_quotas(struct ocfs2_super *osb);
143static void ocfs2_disable_quotas(struct ocfs2_super *osb);
Mark Fashehccd979b2005-12-15 14:31:24 -0800144
Josef 'Jeff' Sipekee9b6d62007-02-12 00:55:41 -0800145static const struct super_operations ocfs2_sops = {
Mark Fashehccd979b2005-12-15 14:31:24 -0800146 .statfs = ocfs2_statfs,
147 .alloc_inode = ocfs2_alloc_inode,
148 .destroy_inode = ocfs2_destroy_inode,
149 .drop_inode = ocfs2_drop_inode,
Al Viro066d92d2010-06-08 21:28:10 -0400150 .evict_inode = ocfs2_evict_inode,
Mark Fashehccd979b2005-12-15 14:31:24 -0800151 .sync_fs = ocfs2_sync_fs,
Mark Fashehccd979b2005-12-15 14:31:24 -0800152 .put_super = ocfs2_put_super,
153 .remount_fs = ocfs2_remount,
Sunil Mushrand5500712007-09-06 13:34:16 -0700154 .show_options = ocfs2_show_options,
Jan Kara9e33d692008-08-25 19:56:50 +0200155 .quota_read = ocfs2_quota_read,
156 .quota_write = ocfs2_quota_write,
Mark Fashehccd979b2005-12-15 14:31:24 -0800157};
158
159enum {
160 Opt_barrier,
161 Opt_err_panic,
162 Opt_err_ro,
163 Opt_intr,
164 Opt_nointr,
165 Opt_hb_none,
166 Opt_hb_local,
Sunil Mushran2c442712010-10-07 15:23:50 -0700167 Opt_hb_global,
Mark Fashehccd979b2005-12-15 14:31:24 -0800168 Opt_data_ordered,
169 Opt_data_writeback,
Tiger Yang7f1a37e2006-11-15 15:48:42 +0800170 Opt_atime_quantum,
Sunil Mushranbaf46612007-06-18 17:00:24 -0700171 Opt_slot,
Mark Fashehd147b3d2007-11-07 14:40:36 -0800172 Opt_commit,
Sunil Mushran2fbe8d12007-12-20 14:58:11 -0800173 Opt_localalloc,
Mark Fasheh53fc6222007-12-20 16:49:04 -0800174 Opt_localflocks,
Joel Beckerb61817e2008-02-01 15:08:23 -0800175 Opt_stack,
Tiger Yangcf1d6c72008-08-18 17:11:00 +0800176 Opt_user_xattr,
177 Opt_nouser_xattr,
Joel Becker12462f12008-09-03 20:03:40 -0700178 Opt_inode64,
Tiger Yanga68979b2008-11-14 11:17:52 +0800179 Opt_acl,
180 Opt_noacl,
Jan Kara19ece542008-08-21 20:13:17 +0200181 Opt_usrquota,
182 Opt_grpquota,
Tristan Ye7bdb0d12010-10-11 16:46:39 +0800183 Opt_coherency_buffered,
184 Opt_coherency_full,
Mark Fashehd02f00c2009-12-07 13:10:48 -0800185 Opt_resv_level,
Mark Fasheh83f92312010-04-05 18:17:16 -0700186 Opt_dir_resv_level,
Mark Fashehccd979b2005-12-15 14:31:24 -0800187 Opt_err,
188};
189
Steven Whitehousea447c092008-10-13 10:46:57 +0100190static const match_table_t tokens = {
Mark Fashehccd979b2005-12-15 14:31:24 -0800191 {Opt_barrier, "barrier=%u"},
192 {Opt_err_panic, "errors=panic"},
193 {Opt_err_ro, "errors=remount-ro"},
194 {Opt_intr, "intr"},
195 {Opt_nointr, "nointr"},
196 {Opt_hb_none, OCFS2_HB_NONE},
197 {Opt_hb_local, OCFS2_HB_LOCAL},
Sunil Mushran2c442712010-10-07 15:23:50 -0700198 {Opt_hb_global, OCFS2_HB_GLOBAL},
Mark Fashehccd979b2005-12-15 14:31:24 -0800199 {Opt_data_ordered, "data=ordered"},
200 {Opt_data_writeback, "data=writeback"},
Tiger Yang7f1a37e2006-11-15 15:48:42 +0800201 {Opt_atime_quantum, "atime_quantum=%u"},
Sunil Mushranbaf46612007-06-18 17:00:24 -0700202 {Opt_slot, "preferred_slot=%u"},
Mark Fashehd147b3d2007-11-07 14:40:36 -0800203 {Opt_commit, "commit=%u"},
Sunil Mushran2fbe8d12007-12-20 14:58:11 -0800204 {Opt_localalloc, "localalloc=%d"},
Mark Fasheh53fc6222007-12-20 16:49:04 -0800205 {Opt_localflocks, "localflocks"},
Joel Beckerb61817e2008-02-01 15:08:23 -0800206 {Opt_stack, "cluster_stack=%s"},
Tiger Yangcf1d6c72008-08-18 17:11:00 +0800207 {Opt_user_xattr, "user_xattr"},
208 {Opt_nouser_xattr, "nouser_xattr"},
Joel Becker12462f12008-09-03 20:03:40 -0700209 {Opt_inode64, "inode64"},
Tiger Yanga68979b2008-11-14 11:17:52 +0800210 {Opt_acl, "acl"},
211 {Opt_noacl, "noacl"},
Jan Kara19ece542008-08-21 20:13:17 +0200212 {Opt_usrquota, "usrquota"},
213 {Opt_grpquota, "grpquota"},
Tristan Ye7bdb0d12010-10-11 16:46:39 +0800214 {Opt_coherency_buffered, "coherency=buffered"},
215 {Opt_coherency_full, "coherency=full"},
Mark Fashehd02f00c2009-12-07 13:10:48 -0800216 {Opt_resv_level, "resv_level=%u"},
Mark Fasheh83f92312010-04-05 18:17:16 -0700217 {Opt_dir_resv_level, "dir_resv_level=%u"},
Mark Fashehccd979b2005-12-15 14:31:24 -0800218 {Opt_err, NULL}
219};
220
Sunil Mushran50397502008-12-17 14:17:43 -0800221#ifdef CONFIG_DEBUG_FS
222static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len)
223{
Sunil Mushran50397502008-12-17 14:17:43 -0800224 struct ocfs2_cluster_connection *cconn = osb->cconn;
225 struct ocfs2_recovery_map *rm = osb->recovery_map;
Sunil Mushrandf152c22009-06-22 11:40:07 -0700226 struct ocfs2_orphan_scan *os = &osb->osb_orphan_scan;
227 int i, out = 0;
Sunil Mushran50397502008-12-17 14:17:43 -0800228
229 out += snprintf(buf + out, len - out,
230 "%10s => Id: %-s Uuid: %-s Gen: 0x%X Label: %-s\n",
231 "Device", osb->dev_str, osb->uuid_str,
232 osb->fs_generation, osb->vol_label);
233
234 out += snprintf(buf + out, len - out,
235 "%10s => State: %d Flags: 0x%lX\n", "Volume",
236 atomic_read(&osb->vol_state), osb->osb_flags);
237
238 out += snprintf(buf + out, len - out,
239 "%10s => Block: %lu Cluster: %d\n", "Sizes",
240 osb->sb->s_blocksize, osb->s_clustersize);
241
242 out += snprintf(buf + out, len - out,
243 "%10s => Compat: 0x%X Incompat: 0x%X "
244 "ROcompat: 0x%X\n",
245 "Features", osb->s_feature_compat,
246 osb->s_feature_incompat, osb->s_feature_ro_compat);
247
248 out += snprintf(buf + out, len - out,
249 "%10s => Opts: 0x%lX AtimeQuanta: %u\n", "Mount",
250 osb->s_mount_opt, osb->s_atime_quantum);
251
Sunil Mushranc3d38842009-06-19 14:45:55 -0700252 if (cconn) {
253 out += snprintf(buf + out, len - out,
254 "%10s => Stack: %s Name: %*s "
255 "Version: %d.%d\n", "Cluster",
256 (*osb->osb_cluster_stack == '\0' ?
257 "o2cb" : osb->osb_cluster_stack),
258 cconn->cc_namelen, cconn->cc_name,
259 cconn->cc_version.pv_major,
260 cconn->cc_version.pv_minor);
261 }
Sunil Mushran50397502008-12-17 14:17:43 -0800262
263 spin_lock(&osb->dc_task_lock);
264 out += snprintf(buf + out, len - out,
265 "%10s => Pid: %d Count: %lu WakeSeq: %lu "
266 "WorkSeq: %lu\n", "DownCnvt",
Sunil Mushranc3d38842009-06-19 14:45:55 -0700267 (osb->dc_task ? task_pid_nr(osb->dc_task) : -1),
268 osb->blocked_lock_count, osb->dc_wake_sequence,
269 osb->dc_work_sequence);
Sunil Mushran50397502008-12-17 14:17:43 -0800270 spin_unlock(&osb->dc_task_lock);
271
272 spin_lock(&osb->osb_lock);
273 out += snprintf(buf + out, len - out, "%10s => Pid: %d Nodes:",
274 "Recovery",
275 (osb->recovery_thread_task ?
276 task_pid_nr(osb->recovery_thread_task) : -1));
277 if (rm->rm_used == 0)
278 out += snprintf(buf + out, len - out, " None\n");
279 else {
280 for (i = 0; i < rm->rm_used; i++)
281 out += snprintf(buf + out, len - out, " %d",
282 rm->rm_entries[i]);
283 out += snprintf(buf + out, len - out, "\n");
284 }
285 spin_unlock(&osb->osb_lock);
286
287 out += snprintf(buf + out, len - out,
288 "%10s => Pid: %d Interval: %lu Needs: %d\n", "Commit",
Sunil Mushranc3d38842009-06-19 14:45:55 -0700289 (osb->commit_task ? task_pid_nr(osb->commit_task) : -1),
290 osb->osb_commit_interval,
Sunil Mushran50397502008-12-17 14:17:43 -0800291 atomic_read(&osb->needs_checkpoint));
292
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
Joel Becker2b4e30f2008-09-03 20:03:41 -0700564 jbd2_journal_init_jbd_inode(&oi->ip_jinode, &oi->vfs_inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800565 return &oi->vfs_inode;
566}
567
Nick Pigginfa0d7e32011-01-07 17:49:49 +1100568static void ocfs2_i_callback(struct rcu_head *head)
569{
570 struct inode *inode = container_of(head, struct inode, i_rcu);
571 INIT_LIST_HEAD(&inode->i_dentry);
572 kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode));
573}
574
Mark Fashehccd979b2005-12-15 14:31:24 -0800575static void ocfs2_destroy_inode(struct inode *inode)
576{
Nick Pigginfa0d7e32011-01-07 17:49:49 +1100577 call_rcu(&inode->i_rcu, ocfs2_i_callback);
Mark Fashehccd979b2005-12-15 14:31:24 -0800578}
579
Mark Fasheh5a254032007-07-20 12:56:16 -0700580static unsigned long long ocfs2_max_file_offset(unsigned int bbits,
581 unsigned int cbits)
Mark Fashehccd979b2005-12-15 14:31:24 -0800582{
Mark Fasheh5a254032007-07-20 12:56:16 -0700583 unsigned int bytes = 1 << cbits;
584 unsigned int trim = bytes;
585 unsigned int bitshift = 32;
Mark Fashehccd979b2005-12-15 14:31:24 -0800586
Mark Fasheh5a254032007-07-20 12:56:16 -0700587 /*
588 * i_size and all block offsets in ocfs2 are always 64 bits
589 * wide. i_clusters is 32 bits, in cluster-sized units. So on
590 * 64 bit platforms, cluster size will be the limiting factor.
Mark Fashehccd979b2005-12-15 14:31:24 -0800591 */
592
593#if BITS_PER_LONG == 32
Bartlomiej Zolnierkiewicz90c699a2009-06-19 08:08:50 +0200594# if defined(CONFIG_LBDAF)
Alexey Dobriyan2ecd05a2006-10-11 01:22:05 -0700595 BUILD_BUG_ON(sizeof(sector_t) != 8);
Mark Fasheh5a254032007-07-20 12:56:16 -0700596 /*
597 * We might be limited by page cache size.
598 */
599 if (bytes > PAGE_CACHE_SIZE) {
600 bytes = PAGE_CACHE_SIZE;
601 trim = 1;
602 /*
603 * Shift by 31 here so that we don't get larger than
604 * MAX_LFS_FILESIZE
605 */
606 bitshift = 31;
607 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800608# else
Mark Fasheh5a254032007-07-20 12:56:16 -0700609 /*
610 * We are limited by the size of sector_t. Use block size, as
611 * that's what we expose to the VFS.
612 */
613 bytes = 1 << bbits;
614 trim = 1;
615 bitshift = 31;
Mark Fashehccd979b2005-12-15 14:31:24 -0800616# endif
617#endif
618
Mark Fasheh5a254032007-07-20 12:56:16 -0700619 /*
620 * Trim by a whole cluster when we can actually approach the
621 * on-disk limits. Otherwise we can overflow i_clusters when
622 * an extent start is at the max offset.
623 */
624 return (((unsigned long long)bytes) << bitshift) - trim;
Mark Fashehccd979b2005-12-15 14:31:24 -0800625}
626
627static int ocfs2_remount(struct super_block *sb, int *flags, char *data)
628{
629 int incompat_features;
630 int ret = 0;
Tiger Yangc0123ad2007-09-08 00:16:10 +0800631 struct mount_options parsed_options;
Mark Fashehccd979b2005-12-15 14:31:24 -0800632 struct ocfs2_super *osb = OCFS2_SB(sb);
Sunil Mushran2c442712010-10-07 15:23:50 -0700633 u32 tmp;
Mark Fashehccd979b2005-12-15 14:31:24 -0800634
Jan Kara5297aad2009-10-15 14:54:04 +0200635 if (!ocfs2_parse_options(sb, data, &parsed_options, 1) ||
636 !ocfs2_check_set_options(sb, &parsed_options)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800637 ret = -EINVAL;
638 goto out;
639 }
640
Sunil Mushran2c442712010-10-07 15:23:50 -0700641 tmp = OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL |
642 OCFS2_MOUNT_HB_NONE;
643 if ((osb->s_mount_opt & tmp) != (parsed_options.mount_opt & tmp)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800644 ret = -EINVAL;
645 mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n");
646 goto out;
647 }
648
649 if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) !=
Tiger Yangc0123ad2007-09-08 00:16:10 +0800650 (parsed_options.mount_opt & OCFS2_MOUNT_DATA_WRITEBACK)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800651 ret = -EINVAL;
652 mlog(ML_ERROR, "Cannot change data mode on remount\n");
653 goto out;
654 }
655
Joel Becker12462f12008-09-03 20:03:40 -0700656 /* Probably don't want this on remount; it might
657 * mess with other nodes */
658 if (!(osb->s_mount_opt & OCFS2_MOUNT_INODE64) &&
659 (parsed_options.mount_opt & OCFS2_MOUNT_INODE64)) {
660 ret = -EINVAL;
661 mlog(ML_ERROR, "Cannot enable inode64 on remount\n");
662 goto out;
663 }
664
Mark Fashehccd979b2005-12-15 14:31:24 -0800665 /* We're going to/from readonly mode. */
666 if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
Jan Kara19ece542008-08-21 20:13:17 +0200667 /* Disable quota accounting before remounting RO */
668 if (*flags & MS_RDONLY) {
669 ret = ocfs2_susp_quotas(osb, 0);
670 if (ret < 0)
671 goto out;
672 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800673 /* Lock here so the check of HARD_RO and the potential
674 * setting of SOFT_RO is atomic. */
675 spin_lock(&osb->osb_lock);
676 if (osb->osb_flags & OCFS2_OSB_HARD_RO) {
677 mlog(ML_ERROR, "Remount on readonly device is forbidden.\n");
678 ret = -EROFS;
679 goto unlock_osb;
680 }
681
682 if (*flags & MS_RDONLY) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800683 sb->s_flags |= MS_RDONLY;
684 osb->osb_flags |= OCFS2_OSB_SOFT_RO;
685 } else {
Mark Fashehccd979b2005-12-15 14:31:24 -0800686 if (osb->osb_flags & OCFS2_OSB_ERROR_FS) {
687 mlog(ML_ERROR, "Cannot remount RDWR "
688 "filesystem due to previous errors.\n");
689 ret = -EROFS;
690 goto unlock_osb;
691 }
692 incompat_features = OCFS2_HAS_RO_COMPAT_FEATURE(sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP);
693 if (incompat_features) {
694 mlog(ML_ERROR, "Cannot remount RDWR because "
695 "of unsupported optional features "
696 "(%x).\n", incompat_features);
697 ret = -EINVAL;
698 goto unlock_osb;
699 }
700 sb->s_flags &= ~MS_RDONLY;
701 osb->osb_flags &= ~OCFS2_OSB_SOFT_RO;
702 }
Tao Ma32a42d32011-02-23 21:29:08 +0800703 trace_ocfs2_remount(sb->s_flags, osb->osb_flags, *flags);
Mark Fashehccd979b2005-12-15 14:31:24 -0800704unlock_osb:
705 spin_unlock(&osb->osb_lock);
Jan Kara19ece542008-08-21 20:13:17 +0200706 /* Enable quota accounting after remounting RW */
707 if (!ret && !(*flags & MS_RDONLY)) {
708 if (sb_any_quota_suspended(sb))
709 ret = ocfs2_susp_quotas(osb, 1);
710 else
711 ret = ocfs2_enable_quotas(osb);
712 if (ret < 0) {
713 /* Return back changes... */
714 spin_lock(&osb->osb_lock);
715 sb->s_flags |= MS_RDONLY;
716 osb->osb_flags |= OCFS2_OSB_SOFT_RO;
717 spin_unlock(&osb->osb_lock);
718 goto out;
719 }
720 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800721 }
722
723 if (!ret) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800724 /* Only save off the new mount options in case of a successful
725 * remount. */
Tiger Yangc0123ad2007-09-08 00:16:10 +0800726 osb->s_mount_opt = parsed_options.mount_opt;
727 osb->s_atime_quantum = parsed_options.atime_quantum;
728 osb->preferred_slot = parsed_options.slot;
Mark Fashehd147b3d2007-11-07 14:40:36 -0800729 if (parsed_options.commit_interval)
730 osb->osb_commit_interval = parsed_options.commit_interval;
Mark Fashehe001e792007-11-07 14:21:45 -0800731
732 if (!ocfs2_is_hard_readonly(osb))
733 ocfs2_set_journal_params(osb);
Jan Kara57b09bb2009-10-15 14:54:05 +0200734
735 sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
736 ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ?
737 MS_POSIXACL : 0);
Mark Fashehccd979b2005-12-15 14:31:24 -0800738 }
739out:
740 return ret;
741}
742
743static int ocfs2_sb_probe(struct super_block *sb,
744 struct buffer_head **bh,
Joel Becker73be1922009-01-06 14:57:08 -0800745 int *sector_size,
746 struct ocfs2_blockcheck_stats *stats)
Mark Fashehccd979b2005-12-15 14:31:24 -0800747{
Denis Chengbddb8eb32007-09-27 02:10:04 +0800748 int status, tmpstat;
Mark Fashehccd979b2005-12-15 14:31:24 -0800749 struct ocfs1_vol_disk_hdr *hdr;
750 struct ocfs2_dinode *di;
751 int blksize;
752
753 *bh = NULL;
754
755 /* may be > 512 */
Martin K. Petersene1defc42009-05-22 17:17:49 -0400756 *sector_size = bdev_logical_block_size(sb->s_bdev);
Mark Fashehccd979b2005-12-15 14:31:24 -0800757 if (*sector_size > OCFS2_MAX_BLOCKSIZE) {
758 mlog(ML_ERROR, "Hardware sector size too large: %d (max=%d)\n",
759 *sector_size, OCFS2_MAX_BLOCKSIZE);
760 status = -EINVAL;
761 goto bail;
762 }
763
764 /* Can this really happen? */
765 if (*sector_size < OCFS2_MIN_BLOCKSIZE)
766 *sector_size = OCFS2_MIN_BLOCKSIZE;
767
768 /* check block zero for old format */
769 status = ocfs2_get_sector(sb, bh, 0, *sector_size);
770 if (status < 0) {
771 mlog_errno(status);
772 goto bail;
773 }
774 hdr = (struct ocfs1_vol_disk_hdr *) (*bh)->b_data;
775 if (hdr->major_version == OCFS1_MAJOR_VERSION) {
776 mlog(ML_ERROR, "incompatible version: %u.%u\n",
777 hdr->major_version, hdr->minor_version);
778 status = -EINVAL;
779 }
780 if (memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE,
781 strlen(OCFS1_VOLUME_SIGNATURE)) == 0) {
782 mlog(ML_ERROR, "incompatible volume signature: %8s\n",
783 hdr->signature);
784 status = -EINVAL;
785 }
786 brelse(*bh);
787 *bh = NULL;
788 if (status < 0) {
789 mlog(ML_ERROR, "This is an ocfs v1 filesystem which must be "
790 "upgraded before mounting with ocfs v2\n");
791 goto bail;
792 }
793
794 /*
795 * Now check at magic offset for 512, 1024, 2048, 4096
796 * blocksizes. 4096 is the maximum blocksize because it is
797 * the minimum clustersize.
798 */
799 status = -EINVAL;
800 for (blksize = *sector_size;
801 blksize <= OCFS2_MAX_BLOCKSIZE;
802 blksize <<= 1) {
803 tmpstat = ocfs2_get_sector(sb, bh,
804 OCFS2_SUPER_BLOCK_BLKNO,
805 blksize);
806 if (tmpstat < 0) {
807 status = tmpstat;
808 mlog_errno(status);
Joel Beckerfb5cbe92009-10-28 22:28:24 -0700809 break;
Mark Fashehccd979b2005-12-15 14:31:24 -0800810 }
811 di = (struct ocfs2_dinode *) (*bh)->b_data;
Joel Becker73be1922009-01-06 14:57:08 -0800812 memset(stats, 0, sizeof(struct ocfs2_blockcheck_stats));
Jan Kara1c1d9792009-07-22 13:17:19 +0200813 spin_lock_init(&stats->b_lock);
Joel Beckerfb5cbe92009-10-28 22:28:24 -0700814 tmpstat = ocfs2_verify_volume(di, *bh, blksize, stats);
815 if (tmpstat < 0) {
816 brelse(*bh);
817 *bh = NULL;
818 }
819 if (tmpstat != -EAGAIN) {
820 status = tmpstat;
Mark Fashehccd979b2005-12-15 14:31:24 -0800821 break;
Joel Beckerfb5cbe92009-10-28 22:28:24 -0700822 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800823 }
824
825bail:
826 return status;
827}
828
Sunil Mushranc271c5c2006-12-05 17:56:35 -0800829static int ocfs2_verify_heartbeat(struct ocfs2_super *osb)
830{
Sunil Mushran2c442712010-10-07 15:23:50 -0700831 u32 hb_enabled = OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL;
832
833 if (osb->s_mount_opt & hb_enabled) {
834 if (ocfs2_mount_local(osb)) {
Sunil Mushranc271c5c2006-12-05 17:56:35 -0800835 mlog(ML_ERROR, "Cannot heartbeat on a locally "
836 "mounted device.\n");
837 return -EINVAL;
838 }
Sunil Mushran2c442712010-10-07 15:23:50 -0700839 if (ocfs2_userspace_stack(osb)) {
Joel Beckerb61817e2008-02-01 15:08:23 -0800840 mlog(ML_ERROR, "Userspace stack expected, but "
841 "o2cb heartbeat arguments passed to mount\n");
842 return -EINVAL;
843 }
Sunil Mushran2c442712010-10-07 15:23:50 -0700844 if (((osb->s_mount_opt & OCFS2_MOUNT_HB_GLOBAL) &&
845 !ocfs2_cluster_o2cb_global_heartbeat(osb)) ||
846 ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) &&
847 ocfs2_cluster_o2cb_global_heartbeat(osb))) {
848 mlog(ML_ERROR, "Mismatching o2cb heartbeat modes\n");
849 return -EINVAL;
850 }
Joel Beckerb61817e2008-02-01 15:08:23 -0800851 }
852
Sunil Mushran2c442712010-10-07 15:23:50 -0700853 if (!(osb->s_mount_opt & hb_enabled)) {
Joel Beckerb61817e2008-02-01 15:08:23 -0800854 if (!ocfs2_mount_local(osb) && !ocfs2_is_hard_readonly(osb) &&
855 !ocfs2_userspace_stack(osb)) {
Sunil Mushranc271c5c2006-12-05 17:56:35 -0800856 mlog(ML_ERROR, "Heartbeat has to be started to mount "
857 "a read-write clustered device.\n");
858 return -EINVAL;
859 }
860 }
861
862 return 0;
863}
864
Joel Beckerb61817e2008-02-01 15:08:23 -0800865/*
866 * If we're using a userspace stack, mount should have passed
867 * a name that matches the disk. If not, mount should not
868 * have passed a stack.
869 */
870static int ocfs2_verify_userspace_stack(struct ocfs2_super *osb,
871 struct mount_options *mopt)
872{
873 if (!ocfs2_userspace_stack(osb) && mopt->cluster_stack[0]) {
874 mlog(ML_ERROR,
875 "cluster stack passed to mount, but this filesystem "
876 "does not support it\n");
877 return -EINVAL;
878 }
879
880 if (ocfs2_userspace_stack(osb) &&
881 strncmp(osb->osb_cluster_stack, mopt->cluster_stack,
882 OCFS2_STACK_LABEL_LEN)) {
883 mlog(ML_ERROR,
884 "cluster stack passed to mount (\"%s\") does not "
885 "match the filesystem (\"%s\")\n",
886 mopt->cluster_stack,
887 osb->osb_cluster_stack);
888 return -EINVAL;
889 }
890
891 return 0;
892}
893
Jan Kara19ece542008-08-21 20:13:17 +0200894static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend)
895{
896 int type;
897 struct super_block *sb = osb->sb;
898 unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
899 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
900 int status = 0;
901
902 for (type = 0; type < MAXQUOTAS; type++) {
903 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
904 continue;
905 if (unsuspend)
Christoph Hellwig0f0dd622010-05-19 07:16:41 -0400906 status = dquot_resume(sb, type);
Jan Karaeea7feb2010-05-13 22:14:53 +0200907 else {
908 struct ocfs2_mem_dqinfo *oinfo;
909
910 /* Cancel periodic syncing before suspending */
911 oinfo = sb_dqinfo(sb, type)->dqi_priv;
912 cancel_delayed_work_sync(&oinfo->dqi_sync_work);
Christoph Hellwig0f0dd622010-05-19 07:16:41 -0400913 status = dquot_suspend(sb, type);
Jan Karaeea7feb2010-05-13 22:14:53 +0200914 }
Jan Kara19ece542008-08-21 20:13:17 +0200915 if (status < 0)
916 break;
917 }
918 if (status < 0)
919 mlog(ML_ERROR, "Failed to suspend/unsuspend quotas on "
920 "remount (error = %d).\n", status);
921 return status;
922}
923
924static int ocfs2_enable_quotas(struct ocfs2_super *osb)
925{
926 struct inode *inode[MAXQUOTAS] = { NULL, NULL };
927 struct super_block *sb = osb->sb;
928 unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
929 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
930 unsigned int ino[MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE,
931 LOCAL_GROUP_QUOTA_SYSTEM_INODE };
932 int status;
933 int type;
934
935 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NEGATIVE_USAGE;
936 for (type = 0; type < MAXQUOTAS; type++) {
937 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
938 continue;
939 inode[type] = ocfs2_get_system_file_inode(osb, ino[type],
940 osb->slot_num);
941 if (!inode[type]) {
942 status = -ENOENT;
943 goto out_quota_off;
944 }
Christoph Hellwig287a8092010-05-19 07:16:45 -0400945 status = dquot_enable(inode[type], type, QFMT_OCFS2,
946 DQUOT_USAGE_ENABLED);
Jan Kara19ece542008-08-21 20:13:17 +0200947 if (status < 0)
948 goto out_quota_off;
949 }
950
951 for (type = 0; type < MAXQUOTAS; type++)
952 iput(inode[type]);
953 return 0;
954out_quota_off:
955 ocfs2_disable_quotas(osb);
956 for (type = 0; type < MAXQUOTAS; type++)
957 iput(inode[type]);
958 mlog_errno(status);
959 return status;
960}
961
962static void ocfs2_disable_quotas(struct ocfs2_super *osb)
963{
964 int type;
965 struct inode *inode;
966 struct super_block *sb = osb->sb;
Jan Karac06bcbf2010-05-13 22:14:53 +0200967 struct ocfs2_mem_dqinfo *oinfo;
Jan Kara19ece542008-08-21 20:13:17 +0200968
969 /* We mostly ignore errors in this function because there's not much
970 * we can do when we see them */
971 for (type = 0; type < MAXQUOTAS; type++) {
972 if (!sb_has_quota_loaded(sb, type))
973 continue;
Jan Karac06bcbf2010-05-13 22:14:53 +0200974 /* Cancel periodic syncing before we grab dqonoff_mutex */
975 oinfo = sb_dqinfo(sb, type)->dqi_priv;
976 cancel_delayed_work_sync(&oinfo->dqi_sync_work);
Jan Kara19ece542008-08-21 20:13:17 +0200977 inode = igrab(sb->s_dquot.files[type]);
978 /* Turn off quotas. This will remove all dquot structures from
979 * memory and so they will be automatically synced to global
980 * quota files */
Christoph Hellwig0f0dd622010-05-19 07:16:41 -0400981 dquot_disable(sb, type, DQUOT_USAGE_ENABLED |
982 DQUOT_LIMITS_ENABLED);
Jan Kara19ece542008-08-21 20:13:17 +0200983 if (!inode)
984 continue;
985 iput(inode);
986 }
987}
988
989/* Handle quota on quotactl */
Jan Karaf00c9e42010-09-15 17:38:58 +0200990static int ocfs2_quota_on(struct super_block *sb, int type, int format_id)
Jan Kara19ece542008-08-21 20:13:17 +0200991{
992 unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
993 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
994
995 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
996 return -EINVAL;
997
Christoph Hellwig287a8092010-05-19 07:16:45 -0400998 return dquot_enable(sb_dqopt(sb)->files[type], type,
999 format_id, DQUOT_LIMITS_ENABLED);
Jan Kara19ece542008-08-21 20:13:17 +02001000}
1001
1002/* Handle quota off quotactl */
Christoph Hellwig307ae182010-05-19 07:16:43 -04001003static int ocfs2_quota_off(struct super_block *sb, int type)
Jan Kara19ece542008-08-21 20:13:17 +02001004{
Christoph Hellwig0f0dd622010-05-19 07:16:41 -04001005 return dquot_disable(sb, type, DQUOT_LIMITS_ENABLED);
Jan Kara19ece542008-08-21 20:13:17 +02001006}
1007
Alexey Dobriyan0d54b212009-09-21 17:01:09 -07001008static const struct quotactl_ops ocfs2_quotactl_ops = {
Jan Karaf00c9e42010-09-15 17:38:58 +02001009 .quota_on_meta = ocfs2_quota_on,
Jan Kara19ece542008-08-21 20:13:17 +02001010 .quota_off = ocfs2_quota_off,
Christoph Hellwig287a8092010-05-19 07:16:45 -04001011 .quota_sync = dquot_quota_sync,
1012 .get_info = dquot_get_dqinfo,
1013 .set_info = dquot_set_dqinfo,
1014 .get_dqblk = dquot_get_dqblk,
1015 .set_dqblk = dquot_set_dqblk,
Jan Kara19ece542008-08-21 20:13:17 +02001016};
1017
Mark Fashehccd979b2005-12-15 14:31:24 -08001018static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
1019{
1020 struct dentry *root;
1021 int status, sector_size;
Tiger Yangc0123ad2007-09-08 00:16:10 +08001022 struct mount_options parsed_options;
Mark Fashehccd979b2005-12-15 14:31:24 -08001023 struct inode *inode = NULL;
1024 struct ocfs2_super *osb = NULL;
1025 struct buffer_head *bh = NULL;
Sunil Mushranc271c5c2006-12-05 17:56:35 -08001026 char nodestr[8];
Joel Becker73be1922009-01-06 14:57:08 -08001027 struct ocfs2_blockcheck_stats stats;
Mark Fashehccd979b2005-12-15 14:31:24 -08001028
Tao Ma32a42d32011-02-23 21:29:08 +08001029 trace_ocfs2_fill_super(sb, data, silent);
Mark Fashehccd979b2005-12-15 14:31:24 -08001030
Tiger Yangc0123ad2007-09-08 00:16:10 +08001031 if (!ocfs2_parse_options(sb, data, &parsed_options, 0)) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001032 status = -EINVAL;
1033 goto read_super_error;
1034 }
1035
1036 /* probe for superblock */
Joel Becker73be1922009-01-06 14:57:08 -08001037 status = ocfs2_sb_probe(sb, &bh, &sector_size, &stats);
Mark Fashehccd979b2005-12-15 14:31:24 -08001038 if (status < 0) {
1039 mlog(ML_ERROR, "superblock probe failed!\n");
1040 goto read_super_error;
1041 }
1042
Joel Becker73be1922009-01-06 14:57:08 -08001043 status = ocfs2_initialize_super(sb, bh, sector_size, &stats);
Mark Fashehccd979b2005-12-15 14:31:24 -08001044 osb = OCFS2_SB(sb);
1045 if (status < 0) {
1046 mlog_errno(status);
1047 goto read_super_error;
1048 }
1049 brelse(bh);
1050 bh = NULL;
Tiger Yanga68979b2008-11-14 11:17:52 +08001051
Jan Kara5297aad2009-10-15 14:54:04 +02001052 if (!ocfs2_check_set_options(sb, &parsed_options)) {
1053 status = -EINVAL;
1054 goto read_super_error;
1055 }
Tiger Yangc0123ad2007-09-08 00:16:10 +08001056 osb->s_mount_opt = parsed_options.mount_opt;
1057 osb->s_atime_quantum = parsed_options.atime_quantum;
1058 osb->preferred_slot = parsed_options.slot;
Mark Fashehd147b3d2007-11-07 14:40:36 -08001059 osb->osb_commit_interval = parsed_options.commit_interval;
Mark Fasheh73c8a802010-04-05 18:17:13 -07001060
1061 ocfs2_la_set_sizes(osb, parsed_options.localalloc_opt);
Mark Fashehd02f00c2009-12-07 13:10:48 -08001062 osb->osb_resv_level = parsed_options.resv_level;
Mark Fasheh83f92312010-04-05 18:17:16 -07001063 osb->osb_dir_resv_level = parsed_options.resv_level;
1064 if (parsed_options.dir_resv_level == -1)
1065 osb->osb_dir_resv_level = parsed_options.resv_level;
1066 else
1067 osb->osb_dir_resv_level = parsed_options.dir_resv_level;
Mark Fashehccd979b2005-12-15 14:31:24 -08001068
Joel Beckerb61817e2008-02-01 15:08:23 -08001069 status = ocfs2_verify_userspace_stack(osb, &parsed_options);
1070 if (status)
1071 goto read_super_error;
1072
Mark Fashehccd979b2005-12-15 14:31:24 -08001073 sb->s_magic = OCFS2_SUPER_MAGIC;
1074
Al Viro9e1f1de2011-06-03 18:24:58 -04001075 sb->s_flags = (sb->s_flags & ~(MS_POSIXACL | MS_NOSEC)) |
Tiger Yanga68979b2008-11-14 11:17:52 +08001076 ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0);
1077
Mark Fashehccd979b2005-12-15 14:31:24 -08001078 /* Hard readonly mode only if: bdev_read_only, MS_RDONLY,
1079 * heartbeat=none */
1080 if (bdev_read_only(sb->s_bdev)) {
1081 if (!(sb->s_flags & MS_RDONLY)) {
1082 status = -EACCES;
1083 mlog(ML_ERROR, "Readonly device detected but readonly "
1084 "mount was not specified.\n");
1085 goto read_super_error;
1086 }
1087
1088 /* You should not be able to start a local heartbeat
1089 * on a readonly device. */
1090 if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) {
1091 status = -EROFS;
1092 mlog(ML_ERROR, "Local heartbeat specified on readonly "
1093 "device.\n");
1094 goto read_super_error;
1095 }
1096
1097 status = ocfs2_check_journals_nolocks(osb);
1098 if (status < 0) {
1099 if (status == -EROFS)
1100 mlog(ML_ERROR, "Recovery required on readonly "
1101 "file system, but write access is "
1102 "unavailable.\n");
1103 else
Sunil Mushran2bd63212010-01-25 16:57:38 -08001104 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001105 goto read_super_error;
1106 }
1107
1108 ocfs2_set_ro_flag(osb, 1);
1109
1110 printk(KERN_NOTICE "Readonly device detected. No cluster "
1111 "services will be utilized for this mount. Recovery "
1112 "will be skipped.\n");
1113 }
1114
1115 if (!ocfs2_is_hard_readonly(osb)) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001116 if (sb->s_flags & MS_RDONLY)
1117 ocfs2_set_ro_flag(osb, 0);
1118 }
1119
Sunil Mushranc271c5c2006-12-05 17:56:35 -08001120 status = ocfs2_verify_heartbeat(osb);
1121 if (status < 0) {
1122 mlog_errno(status);
1123 goto read_super_error;
1124 }
1125
Mark Fashehccd979b2005-12-15 14:31:24 -08001126 osb->osb_debug_root = debugfs_create_dir(osb->uuid_str,
1127 ocfs2_debugfs_root);
1128 if (!osb->osb_debug_root) {
1129 status = -EINVAL;
1130 mlog(ML_ERROR, "Unable to create per-mount debugfs root.\n");
1131 goto read_super_error;
1132 }
1133
Sunil Mushran50397502008-12-17 14:17:43 -08001134 osb->osb_ctxt = debugfs_create_file("fs_state", S_IFREG|S_IRUSR,
1135 osb->osb_debug_root,
1136 osb,
1137 &ocfs2_osb_debug_fops);
1138 if (!osb->osb_ctxt) {
1139 status = -EINVAL;
1140 mlog_errno(status);
1141 goto read_super_error;
1142 }
1143
Joel Becker73be1922009-01-06 14:57:08 -08001144 if (ocfs2_meta_ecc(osb)) {
1145 status = ocfs2_blockcheck_stats_debugfs_install(
1146 &osb->osb_ecc_stats,
1147 osb->osb_debug_root);
1148 if (status) {
1149 mlog(ML_ERROR,
1150 "Unable to create blockcheck statistics "
1151 "files\n");
1152 goto read_super_error;
1153 }
1154 }
1155
Mark Fashehccd979b2005-12-15 14:31:24 -08001156 status = ocfs2_mount_volume(sb);
1157 if (osb->root_inode)
1158 inode = igrab(osb->root_inode);
1159
1160 if (status < 0)
1161 goto read_super_error;
1162
1163 if (!inode) {
1164 status = -EIO;
1165 mlog_errno(status);
1166 goto read_super_error;
1167 }
1168
1169 root = d_alloc_root(inode);
1170 if (!root) {
1171 status = -ENOMEM;
1172 mlog_errno(status);
1173 goto read_super_error;
1174 }
1175
1176 sb->s_root = root;
1177
1178 ocfs2_complete_mount_recovery(osb);
1179
Sunil Mushranc271c5c2006-12-05 17:56:35 -08001180 if (ocfs2_mount_local(osb))
1181 snprintf(nodestr, sizeof(nodestr), "local");
1182 else
Joel Becker19fdb622008-01-30 15:38:24 -08001183 snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num);
Sunil Mushranc271c5c2006-12-05 17:56:35 -08001184
1185 printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %s, slot %d) "
Sunil Mushran781ee3e2006-04-27 16:41:31 -07001186 "with %s data mode.\n",
Sunil Mushranc271c5c2006-12-05 17:56:35 -08001187 osb->dev_str, nodestr, osb->slot_num,
Mark Fashehccd979b2005-12-15 14:31:24 -08001188 osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" :
1189 "ordered");
1190
1191 atomic_set(&osb->vol_state, VOLUME_MOUNTED);
1192 wake_up(&osb->osb_mount_event);
1193
Jan Kara19ece542008-08-21 20:13:17 +02001194 /* Now we can initialize quotas because we can afford to wait
1195 * for cluster locks recovery now. That also means that truncation
1196 * log recovery can happen but that waits for proper quota setup */
1197 if (!(sb->s_flags & MS_RDONLY)) {
1198 status = ocfs2_enable_quotas(osb);
1199 if (status < 0) {
1200 /* We have to err-out specially here because
1201 * s_root is already set */
1202 mlog_errno(status);
1203 atomic_set(&osb->vol_state, VOLUME_DISABLED);
1204 wake_up(&osb->osb_mount_event);
Jan Kara19ece542008-08-21 20:13:17 +02001205 return status;
1206 }
1207 }
1208
1209 ocfs2_complete_quota_recovery(osb);
1210
1211 /* Now we wake up again for processes waiting for quotas */
1212 atomic_set(&osb->vol_state, VOLUME_MOUNTED_QUOTAS);
1213 wake_up(&osb->osb_mount_event);
1214
Sunil Mushrandf152c22009-06-22 11:40:07 -07001215 /* Start this when the mount is almost sure of being successful */
Jeff Mahoney8b712cd2009-07-07 17:22:12 -04001216 ocfs2_orphan_scan_start(osb);
Sunil Mushrandf152c22009-06-22 11:40:07 -07001217
Mark Fashehccd979b2005-12-15 14:31:24 -08001218 return status;
1219
1220read_super_error:
Mark Fasheha81cb882008-10-07 14:25:16 -07001221 brelse(bh);
Mark Fashehccd979b2005-12-15 14:31:24 -08001222
1223 if (inode)
1224 iput(inode);
1225
1226 if (osb) {
1227 atomic_set(&osb->vol_state, VOLUME_DISABLED);
1228 wake_up(&osb->osb_mount_event);
1229 ocfs2_dismount_volume(sb, 1);
1230 }
1231
Tao Mac1e8d352011-03-07 16:43:21 +08001232 if (status)
1233 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001234 return status;
1235}
1236
Al Viro152a0832010-07-25 00:46:55 +04001237static struct dentry *ocfs2_mount(struct file_system_type *fs_type,
David Howells454e2392006-06-23 02:02:57 -07001238 int flags,
1239 const char *dev_name,
Al Viro152a0832010-07-25 00:46:55 +04001240 void *data)
Mark Fashehccd979b2005-12-15 14:31:24 -08001241{
Al Viro152a0832010-07-25 00:46:55 +04001242 return mount_bdev(fs_type, flags, dev_name, data, ocfs2_fill_super);
Mark Fashehccd979b2005-12-15 14:31:24 -08001243}
1244
Jan Karaf7b1aa62009-07-20 12:12:36 +02001245static void ocfs2_kill_sb(struct super_block *sb)
1246{
1247 struct ocfs2_super *osb = OCFS2_SB(sb);
1248
Jan Kara5fd13182009-07-30 17:01:53 +02001249 /* Failed mount? */
1250 if (!osb || atomic_read(&osb->vol_state) == VOLUME_DISABLED)
1251 goto out;
1252
Jan Karaf7b1aa62009-07-20 12:12:36 +02001253 /* Prevent further queueing of inode drop events */
1254 spin_lock(&dentry_list_lock);
1255 ocfs2_set_osb_flag(osb, OCFS2_OSB_DROP_DENTRY_LOCK_IMMED);
1256 spin_unlock(&dentry_list_lock);
1257 /* Wait for work to finish and/or remove it */
1258 cancel_work_sync(&osb->dentry_lock_work);
Jan Kara5fd13182009-07-30 17:01:53 +02001259out:
Jan Karaf7b1aa62009-07-20 12:12:36 +02001260 kill_block_super(sb);
1261}
1262
Mark Fashehccd979b2005-12-15 14:31:24 -08001263static struct file_system_type ocfs2_fs_type = {
1264 .owner = THIS_MODULE,
1265 .name = "ocfs2",
Al Viro152a0832010-07-25 00:46:55 +04001266 .mount = ocfs2_mount,
Jan Karaf7b1aa62009-07-20 12:12:36 +02001267 .kill_sb = ocfs2_kill_sb,
1268
Mark Fasheh1ba9da22006-09-08 14:22:54 -07001269 .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE,
Mark Fashehccd979b2005-12-15 14:31:24 -08001270 .next = NULL
1271};
1272
Jan Kara5297aad2009-10-15 14:54:04 +02001273static int ocfs2_check_set_options(struct super_block *sb,
1274 struct mount_options *options)
1275{
1276 if (options->mount_opt & OCFS2_MOUNT_USRQUOTA &&
1277 !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
1278 OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) {
1279 mlog(ML_ERROR, "User quotas were requested, but this "
1280 "filesystem does not have the feature enabled.\n");
1281 return 0;
1282 }
1283 if (options->mount_opt & OCFS2_MOUNT_GRPQUOTA &&
1284 !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
1285 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) {
1286 mlog(ML_ERROR, "Group quotas were requested, but this "
1287 "filesystem does not have the feature enabled.\n");
1288 return 0;
1289 }
1290 if (options->mount_opt & OCFS2_MOUNT_POSIX_ACL &&
1291 !OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR)) {
1292 mlog(ML_ERROR, "ACL support requested but extended attributes "
1293 "feature is not enabled\n");
1294 return 0;
1295 }
1296 /* No ACL setting specified? Use XATTR feature... */
1297 if (!(options->mount_opt & (OCFS2_MOUNT_POSIX_ACL |
1298 OCFS2_MOUNT_NO_POSIX_ACL))) {
1299 if (OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR))
1300 options->mount_opt |= OCFS2_MOUNT_POSIX_ACL;
1301 else
1302 options->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL;
1303 }
1304 return 1;
1305}
1306
Mark Fashehccd979b2005-12-15 14:31:24 -08001307static int ocfs2_parse_options(struct super_block *sb,
1308 char *options,
Tiger Yangc0123ad2007-09-08 00:16:10 +08001309 struct mount_options *mopt,
Mark Fashehccd979b2005-12-15 14:31:24 -08001310 int is_remount)
1311{
Mark Fasheh52c303c2011-01-31 11:31:04 -08001312 int status, user_stack = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08001313 char *p;
Sunil Mushran2c442712010-10-07 15:23:50 -07001314 u32 tmp;
Mark Fashehccd979b2005-12-15 14:31:24 -08001315
Tao Ma32a42d32011-02-23 21:29:08 +08001316 trace_ocfs2_parse_options(is_remount, options ? options : "(none)");
Mark Fashehccd979b2005-12-15 14:31:24 -08001317
Mark Fashehd147b3d2007-11-07 14:40:36 -08001318 mopt->commit_interval = 0;
Sunil Mushran4b37fcb2010-04-13 18:00:31 -07001319 mopt->mount_opt = OCFS2_MOUNT_NOINTR;
Tiger Yangc0123ad2007-09-08 00:16:10 +08001320 mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
1321 mopt->slot = OCFS2_INVALID_SLOT;
Mark Fasheh73c8a802010-04-05 18:17:13 -07001322 mopt->localalloc_opt = -1;
Joel Beckerb61817e2008-02-01 15:08:23 -08001323 mopt->cluster_stack[0] = '\0';
Mark Fashehd02f00c2009-12-07 13:10:48 -08001324 mopt->resv_level = OCFS2_DEFAULT_RESV_LEVEL;
Mark Fasheh83f92312010-04-05 18:17:16 -07001325 mopt->dir_resv_level = -1;
Mark Fashehccd979b2005-12-15 14:31:24 -08001326
1327 if (!options) {
1328 status = 1;
1329 goto bail;
1330 }
1331
1332 while ((p = strsep(&options, ",")) != NULL) {
1333 int token, option;
1334 substring_t args[MAX_OPT_ARGS];
1335
1336 if (!*p)
1337 continue;
1338
1339 token = match_token(p, tokens, args);
1340 switch (token) {
1341 case Opt_hb_local:
Tiger Yangc0123ad2007-09-08 00:16:10 +08001342 mopt->mount_opt |= OCFS2_MOUNT_HB_LOCAL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001343 break;
1344 case Opt_hb_none:
Sunil Mushran2c442712010-10-07 15:23:50 -07001345 mopt->mount_opt |= OCFS2_MOUNT_HB_NONE;
1346 break;
1347 case Opt_hb_global:
1348 mopt->mount_opt |= OCFS2_MOUNT_HB_GLOBAL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001349 break;
1350 case Opt_barrier:
1351 if (match_int(&args[0], &option)) {
1352 status = 0;
1353 goto bail;
1354 }
1355 if (option)
Tiger Yangc0123ad2007-09-08 00:16:10 +08001356 mopt->mount_opt |= OCFS2_MOUNT_BARRIER;
Mark Fashehccd979b2005-12-15 14:31:24 -08001357 else
Tiger Yangc0123ad2007-09-08 00:16:10 +08001358 mopt->mount_opt &= ~OCFS2_MOUNT_BARRIER;
Mark Fashehccd979b2005-12-15 14:31:24 -08001359 break;
1360 case Opt_intr:
Tiger Yangc0123ad2007-09-08 00:16:10 +08001361 mopt->mount_opt &= ~OCFS2_MOUNT_NOINTR;
Mark Fashehccd979b2005-12-15 14:31:24 -08001362 break;
1363 case Opt_nointr:
Tiger Yangc0123ad2007-09-08 00:16:10 +08001364 mopt->mount_opt |= OCFS2_MOUNT_NOINTR;
Mark Fashehccd979b2005-12-15 14:31:24 -08001365 break;
1366 case Opt_err_panic:
Tiger Yangc0123ad2007-09-08 00:16:10 +08001367 mopt->mount_opt |= OCFS2_MOUNT_ERRORS_PANIC;
Mark Fashehccd979b2005-12-15 14:31:24 -08001368 break;
1369 case Opt_err_ro:
Tiger Yangc0123ad2007-09-08 00:16:10 +08001370 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC;
Mark Fashehccd979b2005-12-15 14:31:24 -08001371 break;
1372 case Opt_data_ordered:
Tiger Yangc0123ad2007-09-08 00:16:10 +08001373 mopt->mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK;
Mark Fashehccd979b2005-12-15 14:31:24 -08001374 break;
1375 case Opt_data_writeback:
Tiger Yangc0123ad2007-09-08 00:16:10 +08001376 mopt->mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK;
Mark Fashehccd979b2005-12-15 14:31:24 -08001377 break;
Tiger Yangcf1d6c72008-08-18 17:11:00 +08001378 case Opt_user_xattr:
1379 mopt->mount_opt &= ~OCFS2_MOUNT_NOUSERXATTR;
1380 break;
1381 case Opt_nouser_xattr:
1382 mopt->mount_opt |= OCFS2_MOUNT_NOUSERXATTR;
1383 break;
Tiger Yang7f1a37e2006-11-15 15:48:42 +08001384 case Opt_atime_quantum:
1385 if (match_int(&args[0], &option)) {
1386 status = 0;
1387 goto bail;
1388 }
1389 if (option >= 0)
Tiger Yangc0123ad2007-09-08 00:16:10 +08001390 mopt->atime_quantum = option;
Tiger Yang7f1a37e2006-11-15 15:48:42 +08001391 break;
Sunil Mushranbaf46612007-06-18 17:00:24 -07001392 case Opt_slot:
1393 option = 0;
1394 if (match_int(&args[0], &option)) {
1395 status = 0;
1396 goto bail;
1397 }
1398 if (option)
Tiger Yangc0123ad2007-09-08 00:16:10 +08001399 mopt->slot = (s16)option;
Sunil Mushranbaf46612007-06-18 17:00:24 -07001400 break;
Mark Fashehd147b3d2007-11-07 14:40:36 -08001401 case Opt_commit:
1402 option = 0;
1403 if (match_int(&args[0], &option)) {
1404 status = 0;
1405 goto bail;
1406 }
1407 if (option < 0)
1408 return 0;
1409 if (option == 0)
Joel Becker2b4e30f2008-09-03 20:03:41 -07001410 option = JBD2_DEFAULT_MAX_COMMIT_AGE;
Mark Fashehd147b3d2007-11-07 14:40:36 -08001411 mopt->commit_interval = HZ * option;
1412 break;
Sunil Mushran2fbe8d12007-12-20 14:58:11 -08001413 case Opt_localalloc:
1414 option = 0;
1415 if (match_int(&args[0], &option)) {
1416 status = 0;
1417 goto bail;
1418 }
Mark Fasheh73c8a802010-04-05 18:17:13 -07001419 if (option >= 0)
Sunil Mushran2fbe8d12007-12-20 14:58:11 -08001420 mopt->localalloc_opt = option;
1421 break;
Mark Fasheh53fc6222007-12-20 16:49:04 -08001422 case Opt_localflocks:
1423 /*
1424 * Changing this during remount could race
1425 * flock() requests, or "unbalance" existing
1426 * ones (e.g., a lock is taken in one mode but
1427 * dropped in the other). If users care enough
1428 * to flip locking modes during remount, we
1429 * could add a "local" flag to individual
1430 * flock structures for proper tracking of
1431 * state.
1432 */
1433 if (!is_remount)
1434 mopt->mount_opt |= OCFS2_MOUNT_LOCALFLOCKS;
1435 break;
Joel Beckerb61817e2008-02-01 15:08:23 -08001436 case Opt_stack:
1437 /* Check both that the option we were passed
1438 * is of the right length and that it is a proper
1439 * string of the right length.
1440 */
1441 if (((args[0].to - args[0].from) !=
1442 OCFS2_STACK_LABEL_LEN) ||
1443 (strnlen(args[0].from,
1444 OCFS2_STACK_LABEL_LEN) !=
1445 OCFS2_STACK_LABEL_LEN)) {
1446 mlog(ML_ERROR,
1447 "Invalid cluster_stack option\n");
1448 status = 0;
1449 goto bail;
1450 }
1451 memcpy(mopt->cluster_stack, args[0].from,
1452 OCFS2_STACK_LABEL_LEN);
1453 mopt->cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0';
Mark Fasheh52c303c2011-01-31 11:31:04 -08001454 /*
1455 * Open code the memcmp here as we don't have
1456 * an osb to pass to
1457 * ocfs2_userspace_stack().
1458 */
1459 if (memcmp(mopt->cluster_stack,
1460 OCFS2_CLASSIC_CLUSTER_STACK,
1461 OCFS2_STACK_LABEL_LEN))
1462 user_stack = 1;
Joel Beckerb61817e2008-02-01 15:08:23 -08001463 break;
Joel Becker12462f12008-09-03 20:03:40 -07001464 case Opt_inode64:
1465 mopt->mount_opt |= OCFS2_MOUNT_INODE64;
1466 break;
Jan Kara19ece542008-08-21 20:13:17 +02001467 case Opt_usrquota:
Jan Kara19ece542008-08-21 20:13:17 +02001468 mopt->mount_opt |= OCFS2_MOUNT_USRQUOTA;
1469 break;
1470 case Opt_grpquota:
Jan Kara19ece542008-08-21 20:13:17 +02001471 mopt->mount_opt |= OCFS2_MOUNT_GRPQUOTA;
1472 break;
Tristan Ye7bdb0d12010-10-11 16:46:39 +08001473 case Opt_coherency_buffered:
1474 mopt->mount_opt |= OCFS2_MOUNT_COHERENCY_BUFFERED;
1475 break;
1476 case Opt_coherency_full:
1477 mopt->mount_opt &= ~OCFS2_MOUNT_COHERENCY_BUFFERED;
1478 break;
Tiger Yanga68979b2008-11-14 11:17:52 +08001479 case Opt_acl:
1480 mopt->mount_opt |= OCFS2_MOUNT_POSIX_ACL;
Jan Kara5297aad2009-10-15 14:54:04 +02001481 mopt->mount_opt &= ~OCFS2_MOUNT_NO_POSIX_ACL;
Tiger Yanga68979b2008-11-14 11:17:52 +08001482 break;
1483 case Opt_noacl:
Jan Kara5297aad2009-10-15 14:54:04 +02001484 mopt->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL;
Tiger Yanga68979b2008-11-14 11:17:52 +08001485 mopt->mount_opt &= ~OCFS2_MOUNT_POSIX_ACL;
1486 break;
Mark Fashehd02f00c2009-12-07 13:10:48 -08001487 case Opt_resv_level:
1488 if (is_remount)
1489 break;
1490 if (match_int(&args[0], &option)) {
1491 status = 0;
1492 goto bail;
1493 }
1494 if (option >= OCFS2_MIN_RESV_LEVEL &&
1495 option < OCFS2_MAX_RESV_LEVEL)
1496 mopt->resv_level = option;
1497 break;
Mark Fasheh83f92312010-04-05 18:17:16 -07001498 case Opt_dir_resv_level:
1499 if (is_remount)
1500 break;
1501 if (match_int(&args[0], &option)) {
1502 status = 0;
1503 goto bail;
1504 }
1505 if (option >= OCFS2_MIN_RESV_LEVEL &&
1506 option < OCFS2_MAX_RESV_LEVEL)
1507 mopt->dir_resv_level = option;
1508 break;
Mark Fashehccd979b2005-12-15 14:31:24 -08001509 default:
1510 mlog(ML_ERROR,
1511 "Unrecognized mount option \"%s\" "
1512 "or missing value\n", p);
1513 status = 0;
1514 goto bail;
1515 }
1516 }
1517
Mark Fasheh52c303c2011-01-31 11:31:04 -08001518 if (user_stack == 0) {
1519 /* Ensure only one heartbeat mode */
1520 tmp = mopt->mount_opt & (OCFS2_MOUNT_HB_LOCAL |
1521 OCFS2_MOUNT_HB_GLOBAL |
1522 OCFS2_MOUNT_HB_NONE);
1523 if (hweight32(tmp) != 1) {
1524 mlog(ML_ERROR, "Invalid heartbeat mount options\n");
1525 status = 0;
1526 goto bail;
1527 }
Sunil Mushran2c442712010-10-07 15:23:50 -07001528 }
1529
Mark Fashehccd979b2005-12-15 14:31:24 -08001530 status = 1;
1531
1532bail:
Mark Fashehccd979b2005-12-15 14:31:24 -08001533 return status;
1534}
1535
Sunil Mushrand5500712007-09-06 13:34:16 -07001536static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt)
1537{
1538 struct ocfs2_super *osb = OCFS2_SB(mnt->mnt_sb);
1539 unsigned long opts = osb->s_mount_opt;
Mark Fashehebcee4b2008-07-28 14:55:20 -07001540 unsigned int local_alloc_megs;
Sunil Mushrand5500712007-09-06 13:34:16 -07001541
Sunil Mushran2c442712010-10-07 15:23:50 -07001542 if (opts & (OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL)) {
1543 seq_printf(s, ",_netdev");
1544 if (opts & OCFS2_MOUNT_HB_LOCAL)
1545 seq_printf(s, ",%s", OCFS2_HB_LOCAL);
1546 else
1547 seq_printf(s, ",%s", OCFS2_HB_GLOBAL);
1548 } else
1549 seq_printf(s, ",%s", OCFS2_HB_NONE);
Sunil Mushrand5500712007-09-06 13:34:16 -07001550
1551 if (opts & OCFS2_MOUNT_NOINTR)
1552 seq_printf(s, ",nointr");
1553
1554 if (opts & OCFS2_MOUNT_DATA_WRITEBACK)
1555 seq_printf(s, ",data=writeback");
1556 else
1557 seq_printf(s, ",data=ordered");
1558
1559 if (opts & OCFS2_MOUNT_BARRIER)
1560 seq_printf(s, ",barrier=1");
1561
1562 if (opts & OCFS2_MOUNT_ERRORS_PANIC)
1563 seq_printf(s, ",errors=panic");
1564 else
1565 seq_printf(s, ",errors=remount-ro");
1566
1567 if (osb->preferred_slot != OCFS2_INVALID_SLOT)
1568 seq_printf(s, ",preferred_slot=%d", osb->preferred_slot);
1569
Tiger Yange2b0c212011-03-02 19:32:09 +08001570 if (!(mnt->mnt_flags & MNT_NOATIME) && !(mnt->mnt_flags & MNT_RELATIME))
Sunil Mushrand5500712007-09-06 13:34:16 -07001571 seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum);
1572
Mark Fashehd147b3d2007-11-07 14:40:36 -08001573 if (osb->osb_commit_interval)
1574 seq_printf(s, ",commit=%u",
1575 (unsigned) (osb->osb_commit_interval / HZ));
1576
Mark Fashehebcee4b2008-07-28 14:55:20 -07001577 local_alloc_megs = osb->local_alloc_bits >> (20 - osb->s_clustersize_bits);
Mark Fasheh6b820212010-04-05 18:17:14 -07001578 if (local_alloc_megs != ocfs2_la_default_mb(osb))
Mark Fashehebcee4b2008-07-28 14:55:20 -07001579 seq_printf(s, ",localalloc=%d", local_alloc_megs);
Sunil Mushran2fbe8d12007-12-20 14:58:11 -08001580
Mark Fasheh53fc6222007-12-20 16:49:04 -08001581 if (opts & OCFS2_MOUNT_LOCALFLOCKS)
1582 seq_printf(s, ",localflocks,");
1583
Joel Beckerb61817e2008-02-01 15:08:23 -08001584 if (osb->osb_cluster_stack[0])
1585 seq_printf(s, ",cluster_stack=%.*s", OCFS2_STACK_LABEL_LEN,
1586 osb->osb_cluster_stack);
Jan Kara19ece542008-08-21 20:13:17 +02001587 if (opts & OCFS2_MOUNT_USRQUOTA)
1588 seq_printf(s, ",usrquota");
1589 if (opts & OCFS2_MOUNT_GRPQUOTA)
1590 seq_printf(s, ",grpquota");
Joel Beckerb61817e2008-02-01 15:08:23 -08001591
Tristan Ye7bdb0d12010-10-11 16:46:39 +08001592 if (opts & OCFS2_MOUNT_COHERENCY_BUFFERED)
1593 seq_printf(s, ",coherency=buffered");
1594 else
1595 seq_printf(s, ",coherency=full");
1596
Sunil Mushranb0f73cf2008-09-05 11:29:14 -07001597 if (opts & OCFS2_MOUNT_NOUSERXATTR)
1598 seq_printf(s, ",nouser_xattr");
1599 else
1600 seq_printf(s, ",user_xattr");
1601
Joel Becker12462f12008-09-03 20:03:40 -07001602 if (opts & OCFS2_MOUNT_INODE64)
1603 seq_printf(s, ",inode64");
1604
Tiger Yanga68979b2008-11-14 11:17:52 +08001605 if (opts & OCFS2_MOUNT_POSIX_ACL)
1606 seq_printf(s, ",acl");
1607 else
1608 seq_printf(s, ",noacl");
Tiger Yanga68979b2008-11-14 11:17:52 +08001609
Mark Fashehd02f00c2009-12-07 13:10:48 -08001610 if (osb->osb_resv_level != OCFS2_DEFAULT_RESV_LEVEL)
1611 seq_printf(s, ",resv_level=%d", osb->osb_resv_level);
1612
Mark Fasheh83f92312010-04-05 18:17:16 -07001613 if (osb->osb_dir_resv_level != osb->osb_resv_level)
1614 seq_printf(s, ",dir_resv_level=%d", osb->osb_resv_level);
1615
Sunil Mushrand5500712007-09-06 13:34:16 -07001616 return 0;
1617}
1618
Mark Fashehccd979b2005-12-15 14:31:24 -08001619static int __init ocfs2_init(void)
1620{
1621 int status;
1622
Mark Fashehccd979b2005-12-15 14:31:24 -08001623 ocfs2_print_version();
1624
Mark Fashehccd979b2005-12-15 14:31:24 -08001625 status = init_ocfs2_uptodate_cache();
1626 if (status < 0) {
1627 mlog_errno(status);
1628 goto leave;
1629 }
1630
1631 status = ocfs2_initialize_mem_caches();
1632 if (status < 0) {
1633 mlog_errno(status);
1634 goto leave;
1635 }
1636
1637 ocfs2_wq = create_singlethread_workqueue("ocfs2_wq");
1638 if (!ocfs2_wq) {
1639 status = -ENOMEM;
1640 goto leave;
1641 }
1642
Mark Fashehccd979b2005-12-15 14:31:24 -08001643 ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL);
1644 if (!ocfs2_debugfs_root) {
1645 status = -EFAULT;
1646 mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n");
1647 }
1648
Joel Becker63e0c482008-01-30 16:58:36 -08001649 ocfs2_set_locking_protocol();
1650
Jan Kara9e33d692008-08-25 19:56:50 +02001651 status = register_quota_format(&ocfs2_quota_format);
Mark Fashehccd979b2005-12-15 14:31:24 -08001652leave:
1653 if (status < 0) {
1654 ocfs2_free_mem_caches();
1655 exit_ocfs2_uptodate_cache();
Tao Mac1e8d352011-03-07 16:43:21 +08001656 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001657 }
1658
Mark Fashehccd979b2005-12-15 14:31:24 -08001659 if (status >= 0) {
1660 return register_filesystem(&ocfs2_fs_type);
1661 } else
1662 return -1;
1663}
1664
1665static void __exit ocfs2_exit(void)
1666{
Mark Fashehccd979b2005-12-15 14:31:24 -08001667 if (ocfs2_wq) {
1668 flush_workqueue(ocfs2_wq);
1669 destroy_workqueue(ocfs2_wq);
1670 }
1671
Jan Kara9e33d692008-08-25 19:56:50 +02001672 unregister_quota_format(&ocfs2_quota_format);
1673
Mark Fashehccd979b2005-12-15 14:31:24 -08001674 debugfs_remove(ocfs2_debugfs_root);
1675
1676 ocfs2_free_mem_caches();
1677
1678 unregister_filesystem(&ocfs2_fs_type);
1679
Mark Fashehccd979b2005-12-15 14:31:24 -08001680 exit_ocfs2_uptodate_cache();
Mark Fashehccd979b2005-12-15 14:31:24 -08001681}
1682
1683static void ocfs2_put_super(struct super_block *sb)
1684{
Tao Ma32a42d32011-02-23 21:29:08 +08001685 trace_ocfs2_put_super(sb);
Mark Fashehccd979b2005-12-15 14:31:24 -08001686
1687 ocfs2_sync_blockdev(sb);
1688 ocfs2_dismount_volume(sb, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -08001689}
1690
David Howells726c3342006-06-23 02:02:58 -07001691static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf)
Mark Fashehccd979b2005-12-15 14:31:24 -08001692{
1693 struct ocfs2_super *osb;
1694 u32 numbits, freebits;
1695 int status;
1696 struct ocfs2_dinode *bm_lock;
1697 struct buffer_head *bh = NULL;
1698 struct inode *inode = NULL;
1699
Tao Ma32a42d32011-02-23 21:29:08 +08001700 trace_ocfs2_statfs(dentry->d_sb, buf);
Mark Fashehccd979b2005-12-15 14:31:24 -08001701
David Howells726c3342006-06-23 02:02:58 -07001702 osb = OCFS2_SB(dentry->d_sb);
Mark Fashehccd979b2005-12-15 14:31:24 -08001703
1704 inode = ocfs2_get_system_file_inode(osb,
1705 GLOBAL_BITMAP_SYSTEM_INODE,
1706 OCFS2_INVALID_SLOT);
1707 if (!inode) {
1708 mlog(ML_ERROR, "failed to get bitmap inode\n");
1709 status = -EIO;
1710 goto bail;
1711 }
1712
Mark Fashehe63aecb62007-10-18 15:30:42 -07001713 status = ocfs2_inode_lock(inode, &bh, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -08001714 if (status < 0) {
1715 mlog_errno(status);
1716 goto bail;
1717 }
1718
1719 bm_lock = (struct ocfs2_dinode *) bh->b_data;
1720
1721 numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total);
1722 freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used);
1723
1724 buf->f_type = OCFS2_SUPER_MAGIC;
David Howells726c3342006-06-23 02:02:58 -07001725 buf->f_bsize = dentry->d_sb->s_blocksize;
Mark Fashehccd979b2005-12-15 14:31:24 -08001726 buf->f_namelen = OCFS2_MAX_FILENAME_LEN;
1727 buf->f_blocks = ((sector_t) numbits) *
1728 (osb->s_clustersize >> osb->sb->s_blocksize_bits);
1729 buf->f_bfree = ((sector_t) freebits) *
1730 (osb->s_clustersize >> osb->sb->s_blocksize_bits);
1731 buf->f_bavail = buf->f_bfree;
1732 buf->f_files = numbits;
1733 buf->f_ffree = freebits;
Coly Li837711f2009-01-16 16:33:05 +08001734 buf->f_fsid.val[0] = crc32_le(0, osb->uuid_str, OCFS2_VOL_UUID_LEN)
1735 & 0xFFFFFFFFUL;
1736 buf->f_fsid.val[1] = crc32_le(0, osb->uuid_str + OCFS2_VOL_UUID_LEN,
1737 OCFS2_VOL_UUID_LEN) & 0xFFFFFFFFUL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001738
1739 brelse(bh);
1740
Mark Fashehe63aecb62007-10-18 15:30:42 -07001741 ocfs2_inode_unlock(inode, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -08001742 status = 0;
1743bail:
1744 if (inode)
1745 iput(inode);
1746
Tao Mac1e8d352011-03-07 16:43:21 +08001747 if (status)
1748 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001749
1750 return status;
1751}
1752
Alexey Dobriyan51cc5062008-07-25 19:45:34 -07001753static void ocfs2_inode_init_once(void *data)
Mark Fashehccd979b2005-12-15 14:31:24 -08001754{
1755 struct ocfs2_inode_info *oi = data;
1756
Christoph Lametera35afb82007-05-16 22:10:57 -07001757 oi->ip_flags = 0;
1758 oi->ip_open_count = 0;
1759 spin_lock_init(&oi->ip_lock);
1760 ocfs2_extent_map_init(&oi->vfs_inode);
1761 INIT_LIST_HEAD(&oi->ip_io_markers);
Christoph Lametera35afb82007-05-16 22:10:57 -07001762 oi->ip_dir_start_lookup = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08001763
Christoph Lametera35afb82007-05-16 22:10:57 -07001764 init_rwsem(&oi->ip_alloc_sem);
Tiger Yangcf1d6c72008-08-18 17:11:00 +08001765 init_rwsem(&oi->ip_xattr_sem);
Christoph Lametera35afb82007-05-16 22:10:57 -07001766 mutex_init(&oi->ip_io_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -08001767
Christoph Lametera35afb82007-05-16 22:10:57 -07001768 oi->ip_blkno = 0ULL;
1769 oi->ip_clusters = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08001770
Mark Fasheh4fe370a2009-12-07 13:15:40 -08001771 ocfs2_resv_init_once(&oi->ip_la_data_resv);
1772
Christoph Lametera35afb82007-05-16 22:10:57 -07001773 ocfs2_lock_res_init_once(&oi->ip_rw_lockres);
Mark Fashehe63aecb62007-10-18 15:30:42 -07001774 ocfs2_lock_res_init_once(&oi->ip_inode_lockres);
Christoph Lametera35afb82007-05-16 22:10:57 -07001775 ocfs2_lock_res_init_once(&oi->ip_open_lockres);
Mark Fashehccd979b2005-12-15 14:31:24 -08001776
Joel Becker8cb471e2009-02-10 20:00:41 -08001777 ocfs2_metadata_cache_init(INODE_CACHE(&oi->vfs_inode),
Joel Becker6e5a3d72009-02-10 19:00:37 -08001778 &ocfs2_inode_caching_ops);
Mark Fashehccd979b2005-12-15 14:31:24 -08001779
Christoph Lametera35afb82007-05-16 22:10:57 -07001780 inode_init_once(&oi->vfs_inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001781}
1782
1783static int ocfs2_initialize_mem_caches(void)
1784{
1785 ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache",
Paul Jacksonfffb60f2006-03-24 03:16:06 -08001786 sizeof(struct ocfs2_inode_info),
1787 0,
1788 (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
1789 SLAB_MEM_SPREAD),
Paul Mundt20c2df82007-07-20 10:11:58 +09001790 ocfs2_inode_init_once);
Jan Kara9e33d692008-08-25 19:56:50 +02001791 ocfs2_dquot_cachep = kmem_cache_create("ocfs2_dquot_cache",
1792 sizeof(struct ocfs2_dquot),
1793 0,
1794 (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
1795 SLAB_MEM_SPREAD),
1796 NULL);
1797 ocfs2_qf_chunk_cachep = kmem_cache_create("ocfs2_qf_chunk_cache",
1798 sizeof(struct ocfs2_quota_chunk),
1799 0,
1800 (SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD),
1801 NULL);
1802 if (!ocfs2_inode_cachep || !ocfs2_dquot_cachep ||
1803 !ocfs2_qf_chunk_cachep) {
1804 if (ocfs2_inode_cachep)
1805 kmem_cache_destroy(ocfs2_inode_cachep);
1806 if (ocfs2_dquot_cachep)
1807 kmem_cache_destroy(ocfs2_dquot_cachep);
1808 if (ocfs2_qf_chunk_cachep)
1809 kmem_cache_destroy(ocfs2_qf_chunk_cachep);
Mark Fashehccd979b2005-12-15 14:31:24 -08001810 return -ENOMEM;
Jan Kara9e33d692008-08-25 19:56:50 +02001811 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001812
Mark Fashehccd979b2005-12-15 14:31:24 -08001813 return 0;
1814}
1815
1816static void ocfs2_free_mem_caches(void)
1817{
1818 if (ocfs2_inode_cachep)
1819 kmem_cache_destroy(ocfs2_inode_cachep);
Mark Fashehccd979b2005-12-15 14:31:24 -08001820 ocfs2_inode_cachep = NULL;
Jan Kara9e33d692008-08-25 19:56:50 +02001821
1822 if (ocfs2_dquot_cachep)
1823 kmem_cache_destroy(ocfs2_dquot_cachep);
1824 ocfs2_dquot_cachep = NULL;
1825
1826 if (ocfs2_qf_chunk_cachep)
1827 kmem_cache_destroy(ocfs2_qf_chunk_cachep);
1828 ocfs2_qf_chunk_cachep = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001829}
1830
1831static int ocfs2_get_sector(struct super_block *sb,
1832 struct buffer_head **bh,
1833 int block,
1834 int sect_size)
1835{
1836 if (!sb_set_blocksize(sb, sect_size)) {
1837 mlog(ML_ERROR, "unable to set blocksize\n");
1838 return -EIO;
1839 }
1840
1841 *bh = sb_getblk(sb, block);
1842 if (!*bh) {
1843 mlog_errno(-EIO);
1844 return -EIO;
1845 }
1846 lock_buffer(*bh);
1847 if (!buffer_dirty(*bh))
1848 clear_buffer_uptodate(*bh);
1849 unlock_buffer(*bh);
1850 ll_rw_block(READ, 1, bh);
1851 wait_on_buffer(*bh);
wengang wang28d57d42009-02-13 10:11:47 +08001852 if (!buffer_uptodate(*bh)) {
1853 mlog_errno(-EIO);
1854 brelse(*bh);
1855 *bh = NULL;
1856 return -EIO;
1857 }
1858
Mark Fashehccd979b2005-12-15 14:31:24 -08001859 return 0;
1860}
1861
Mark Fashehccd979b2005-12-15 14:31:24 -08001862static int ocfs2_mount_volume(struct super_block *sb)
1863{
1864 int status = 0;
1865 int unlock_super = 0;
1866 struct ocfs2_super *osb = OCFS2_SB(sb);
1867
Mark Fashehccd979b2005-12-15 14:31:24 -08001868 if (ocfs2_is_hard_readonly(osb))
1869 goto leave;
1870
Mark Fashehccd979b2005-12-15 14:31:24 -08001871 status = ocfs2_dlm_init(osb);
1872 if (status < 0) {
1873 mlog_errno(status);
1874 goto leave;
1875 }
1876
Mark Fashehccd979b2005-12-15 14:31:24 -08001877 status = ocfs2_super_lock(osb, 1);
1878 if (status < 0) {
1879 mlog_errno(status);
1880 goto leave;
1881 }
1882 unlock_super = 1;
1883
1884 /* This will load up the node map and add ourselves to it. */
1885 status = ocfs2_find_slot(osb);
1886 if (status < 0) {
1887 mlog_errno(status);
1888 goto leave;
1889 }
1890
Mark Fashehccd979b2005-12-15 14:31:24 -08001891 /* load all node-local system inodes */
1892 status = ocfs2_init_local_system_inodes(osb);
1893 if (status < 0) {
1894 mlog_errno(status);
1895 goto leave;
1896 }
1897
1898 status = ocfs2_check_volume(osb);
1899 if (status < 0) {
1900 mlog_errno(status);
1901 goto leave;
1902 }
1903
1904 status = ocfs2_truncate_log_init(osb);
Tao Ma06c59bb2009-05-19 06:47:20 +08001905 if (status < 0)
Mark Fashehccd979b2005-12-15 14:31:24 -08001906 mlog_errno(status);
Sunil Mushranc271c5c2006-12-05 17:56:35 -08001907
Mark Fashehccd979b2005-12-15 14:31:24 -08001908leave:
1909 if (unlock_super)
1910 ocfs2_super_unlock(osb, 1);
1911
Mark Fashehccd979b2005-12-15 14:31:24 -08001912 return status;
1913}
1914
Mark Fashehccd979b2005-12-15 14:31:24 -08001915static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err)
1916{
Joel Becker286eaa92008-02-01 15:03:57 -08001917 int tmp, hangup_needed = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08001918 struct ocfs2_super *osb = NULL;
Sunil Mushranc271c5c2006-12-05 17:56:35 -08001919 char nodestr[8];
Mark Fashehccd979b2005-12-15 14:31:24 -08001920
Tao Ma32a42d32011-02-23 21:29:08 +08001921 trace_ocfs2_dismount_volume(sb);
Mark Fashehccd979b2005-12-15 14:31:24 -08001922
1923 BUG_ON(!sb);
1924 osb = OCFS2_SB(sb);
1925 BUG_ON(!osb);
1926
Sunil Mushran50397502008-12-17 14:17:43 -08001927 debugfs_remove(osb->osb_ctxt);
1928
Jan Karaf7b1aa62009-07-20 12:12:36 +02001929 /*
1930 * Flush inode dropping work queue so that deletes are
1931 * performed while the filesystem is still working
1932 */
1933 ocfs2_drop_all_dl_inodes(osb);
1934
Sunil Mushran692684e2009-06-19 16:53:17 -07001935 /* Orphan scan should be stopped as early as possible */
1936 ocfs2_orphan_scan_stop(osb);
1937
Jan Kara19ece542008-08-21 20:13:17 +02001938 ocfs2_disable_quotas(osb);
1939
Mark Fashehccd979b2005-12-15 14:31:24 -08001940 ocfs2_shutdown_local_alloc(osb);
1941
1942 ocfs2_truncate_log_shutdown(osb);
1943
Joel Becker553abd02008-02-01 12:03:57 -08001944 /* This will disable recovery and flush any recovery work. */
1945 ocfs2_recovery_exit(osb);
Mark Fashehccd979b2005-12-15 14:31:24 -08001946
1947 ocfs2_journal_shutdown(osb);
1948
1949 ocfs2_sync_blockdev(sb);
1950
Tao Ma374a2632009-08-24 11:13:37 +08001951 ocfs2_purge_refcount_trees(osb);
1952
Joel Becker4670c462008-02-01 14:39:35 -08001953 /* No cluster connection means we've failed during mount, so skip
1954 * all the steps which depended on that to complete. */
1955 if (osb->cconn) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001956 tmp = ocfs2_super_lock(osb, 1);
1957 if (tmp < 0) {
1958 mlog_errno(tmp);
1959 return;
1960 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001961 }
1962
Mark Fasheh19b613d2007-10-04 14:47:09 -07001963 if (osb->slot_num != OCFS2_INVALID_SLOT)
1964 ocfs2_put_slot(osb);
1965
Joel Becker4670c462008-02-01 14:39:35 -08001966 if (osb->cconn)
Mark Fasheh19b613d2007-10-04 14:47:09 -07001967 ocfs2_super_unlock(osb, 1);
1968
Mark Fashehccd979b2005-12-15 14:31:24 -08001969 ocfs2_release_system_inodes(osb);
1970
Joel Becker6953b4c2008-01-29 16:59:56 -08001971 /*
Joel Becker6953b4c2008-01-29 16:59:56 -08001972 * If we're dismounting due to mount error, mount.ocfs2 will clean
1973 * up heartbeat. If we're a local mount, there is no heartbeat.
1974 * If we failed before we got a uuid_str yet, we can't stop
1975 * heartbeat. Otherwise, do it.
1976 */
1977 if (!mnt_err && !ocfs2_mount_local(osb) && osb->uuid_str)
Joel Becker286eaa92008-02-01 15:03:57 -08001978 hangup_needed = 1;
1979
1980 if (osb->cconn)
1981 ocfs2_dlm_shutdown(osb, hangup_needed);
1982
Joel Becker73be1922009-01-06 14:57:08 -08001983 ocfs2_blockcheck_stats_debugfs_remove(&osb->osb_ecc_stats);
Joel Becker286eaa92008-02-01 15:03:57 -08001984 debugfs_remove(osb->osb_debug_root);
1985
1986 if (hangup_needed)
Joel Becker6953b4c2008-01-29 16:59:56 -08001987 ocfs2_cluster_hangup(osb->uuid_str, strlen(osb->uuid_str));
Mark Fashehccd979b2005-12-15 14:31:24 -08001988
1989 atomic_set(&osb->vol_state, VOLUME_DISMOUNTED);
1990
Sunil Mushranc271c5c2006-12-05 17:56:35 -08001991 if (ocfs2_mount_local(osb))
1992 snprintf(nodestr, sizeof(nodestr), "local");
1993 else
Joel Becker19fdb622008-01-30 15:38:24 -08001994 snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num);
Sunil Mushranc271c5c2006-12-05 17:56:35 -08001995
1996 printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %s)\n",
1997 osb->dev_str, nodestr);
Mark Fashehccd979b2005-12-15 14:31:24 -08001998
1999 ocfs2_delete_osb(osb);
2000 kfree(osb);
2001 sb->s_dev = 0;
2002 sb->s_fs_info = NULL;
2003}
2004
2005static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid,
2006 unsigned uuid_bytes)
2007{
2008 int i, ret;
2009 char *ptr;
2010
2011 BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN);
2012
Robert P. J. Daycd861282006-12-13 00:34:52 -08002013 osb->uuid_str = kzalloc(OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL);
Mark Fashehccd979b2005-12-15 14:31:24 -08002014 if (osb->uuid_str == NULL)
2015 return -ENOMEM;
2016
Mark Fashehccd979b2005-12-15 14:31:24 -08002017 for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) {
2018 /* print with null */
2019 ret = snprintf(ptr, 3, "%02X", uuid[i]);
2020 if (ret != 2) /* drop super cleans up */
2021 return -EINVAL;
2022 /* then only advance past the last char */
2023 ptr += 2;
2024 }
2025
2026 return 0;
2027}
2028
Patrick J. LoPresti3bdb8ef2010-07-22 15:05:57 -07002029/* Make sure entire volume is addressable by our journal. Requires
2030 osb_clusters_at_boot to be valid and for the journal to have been
2031 initialized by ocfs2_journal_init(). */
2032static int ocfs2_journal_addressable(struct ocfs2_super *osb)
2033{
2034 int status = 0;
2035 u64 max_block =
2036 ocfs2_clusters_to_blocks(osb->sb,
2037 osb->osb_clusters_at_boot) - 1;
2038
2039 /* 32-bit block number is always OK. */
2040 if (max_block <= (u32)~0ULL)
2041 goto out;
2042
2043 /* Volume is "huge", so see if our journal is new enough to
2044 support it. */
2045 if (!(OCFS2_HAS_COMPAT_FEATURE(osb->sb,
2046 OCFS2_FEATURE_COMPAT_JBD2_SB) &&
2047 jbd2_journal_check_used_features(osb->journal->j_journal, 0, 0,
2048 JBD2_FEATURE_INCOMPAT_64BIT))) {
2049 mlog(ML_ERROR, "The journal cannot address the entire volume. "
2050 "Enable the 'block64' journal option with tunefs.ocfs2");
2051 status = -EFBIG;
2052 goto out;
2053 }
2054
2055 out:
2056 return status;
2057}
2058
Mark Fashehccd979b2005-12-15 14:31:24 -08002059static int ocfs2_initialize_super(struct super_block *sb,
2060 struct buffer_head *bh,
Joel Becker73be1922009-01-06 14:57:08 -08002061 int sector_size,
2062 struct ocfs2_blockcheck_stats *stats)
Mark Fashehccd979b2005-12-15 14:31:24 -08002063{
Denis Chengbddb8eb32007-09-27 02:10:04 +08002064 int status;
Mark Fasheh5a254032007-07-20 12:56:16 -07002065 int i, cbits, bbits;
2066 struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data;
Mark Fashehccd979b2005-12-15 14:31:24 -08002067 struct inode *inode = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08002068 struct ocfs2_journal *journal;
2069 __le32 uuid_net_key;
2070 struct ocfs2_super *osb;
Patrick J. LoPresti3bdb8ef2010-07-22 15:05:57 -07002071 u64 total_blocks;
Mark Fashehccd979b2005-12-15 14:31:24 -08002072
Robert P. J. Daycd861282006-12-13 00:34:52 -08002073 osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL);
Mark Fashehccd979b2005-12-15 14:31:24 -08002074 if (!osb) {
2075 status = -ENOMEM;
2076 mlog_errno(status);
2077 goto bail;
2078 }
2079
2080 sb->s_fs_info = osb;
2081 sb->s_op = &ocfs2_sops;
Al Viroba871672010-12-18 12:10:00 -05002082 sb->s_d_op = &ocfs2_dentry_ops;
Mark Fashehccd979b2005-12-15 14:31:24 -08002083 sb->s_export_op = &ocfs2_export_ops;
Jan Kara19ece542008-08-21 20:13:17 +02002084 sb->s_qcop = &ocfs2_quotactl_ops;
2085 sb->dq_op = &ocfs2_quota_operations;
Tiger Yangcf1d6c72008-08-18 17:11:00 +08002086 sb->s_xattr = ocfs2_xattr_handlers;
Mark Fashehe0dceaf2007-08-09 16:52:30 -07002087 sb->s_time_gran = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -08002088 sb->s_flags |= MS_NOATIME;
2089 /* this is needed to support O_LARGEFILE */
Mark Fasheh5a254032007-07-20 12:56:16 -07002090 cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits);
2091 bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits);
2092 sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits);
Mark Fashehccd979b2005-12-15 14:31:24 -08002093
Mark Fasheh9b7895e2008-11-12 16:27:44 -08002094 osb->osb_dx_mask = (1 << (cbits - bbits)) - 1;
2095
2096 for (i = 0; i < 3; i++)
2097 osb->osb_dx_seed[i] = le32_to_cpu(di->id2.i_super.s_dx_seed[i]);
2098 osb->osb_dx_seed[3] = le32_to_cpu(di->id2.i_super.s_uuid_hash);
2099
Mark Fashehccd979b2005-12-15 14:31:24 -08002100 osb->sb = sb;
2101 /* Save off for ocfs2_rw_direct */
2102 osb->s_sectsize_bits = blksize_bits(sector_size);
Eric Sesterhenn / snakebyteebdec832006-01-27 10:32:52 +01002103 BUG_ON(!osb->s_sectsize_bits);
Mark Fashehccd979b2005-12-15 14:31:24 -08002104
Mark Fasheh34d024f2007-09-24 15:56:19 -07002105 spin_lock_init(&osb->dc_task_lock);
2106 init_waitqueue_head(&osb->dc_event);
2107 osb->dc_work_sequence = 0;
2108 osb->dc_wake_sequence = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08002109 INIT_LIST_HEAD(&osb->blocked_lock_list);
2110 osb->blocked_lock_count = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08002111 spin_lock_init(&osb->osb_lock);
Tao Mac8b9cf92009-02-24 17:40:26 -08002112 spin_lock_init(&osb->osb_xattr_lock);
Tiger Yangb89c5422010-01-25 14:11:06 +08002113 ocfs2_init_steal_slots(osb);
Mark Fashehccd979b2005-12-15 14:31:24 -08002114
2115 atomic_set(&osb->alloc_stats.moves, 0);
2116 atomic_set(&osb->alloc_stats.local_data, 0);
2117 atomic_set(&osb->alloc_stats.bitmap_data, 0);
2118 atomic_set(&osb->alloc_stats.bg_allocs, 0);
2119 atomic_set(&osb->alloc_stats.bg_extends, 0);
2120
Joel Becker73be1922009-01-06 14:57:08 -08002121 /* Copy the blockcheck stats from the superblock probe */
2122 osb->osb_ecc_stats = *stats;
2123
Mark Fashehccd979b2005-12-15 14:31:24 -08002124 ocfs2_init_node_maps(osb);
2125
2126 snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u",
2127 MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev));
2128
Goldwyn Rodrigues75d9bbc2010-10-11 12:57:09 -05002129 osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots);
2130 if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) {
2131 mlog(ML_ERROR, "Invalid number of node slots (%u)\n",
2132 osb->max_slots);
2133 status = -EINVAL;
2134 goto bail;
2135 }
Goldwyn Rodrigues75d9bbc2010-10-11 12:57:09 -05002136
Jeff Mahoney8b712cd2009-07-07 17:22:12 -04002137 ocfs2_orphan_scan_init(osb);
2138
Joel Becker553abd02008-02-01 12:03:57 -08002139 status = ocfs2_recovery_init(osb);
2140 if (status) {
2141 mlog(ML_ERROR, "Unable to initialize recovery state\n");
2142 mlog_errno(status);
2143 goto bail;
2144 }
Mark Fashehccd979b2005-12-15 14:31:24 -08002145
2146 init_waitqueue_head(&osb->checkpoint_event);
2147 atomic_set(&osb->needs_checkpoint, 0);
2148
Tiger Yang7f1a37e2006-11-15 15:48:42 +08002149 osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
2150
Mark Fashehccd979b2005-12-15 14:31:24 -08002151 osb->slot_num = OCFS2_INVALID_SLOT;
2152
Tiger Yang8154da32008-08-18 17:11:46 +08002153 osb->s_xattr_inline_size = le16_to_cpu(
2154 di->id2.i_super.s_xattr_inline_size);
Tiger Yangfdd77702008-08-18 17:08:55 +08002155
Mark Fashehccd979b2005-12-15 14:31:24 -08002156 osb->local_alloc_state = OCFS2_LA_UNUSED;
2157 osb->local_alloc_bh = NULL;
Mark Fasheh9c7af402008-07-28 18:02:53 -07002158 INIT_DELAYED_WORK(&osb->la_enable_wq, ocfs2_la_enable_worker);
Mark Fashehccd979b2005-12-15 14:31:24 -08002159
Mark Fashehccd979b2005-12-15 14:31:24 -08002160 init_waitqueue_head(&osb->osb_mount_event);
2161
Mark Fashehd02f00c2009-12-07 13:10:48 -08002162 status = ocfs2_resmap_init(osb, &osb->osb_la_resmap);
2163 if (status) {
2164 mlog_errno(status);
2165 goto bail;
2166 }
2167
Mark Fashehccd979b2005-12-15 14:31:24 -08002168 osb->vol_label = kmalloc(OCFS2_MAX_VOL_LABEL_LEN, GFP_KERNEL);
2169 if (!osb->vol_label) {
2170 mlog(ML_ERROR, "unable to alloc vol label\n");
2171 status = -ENOMEM;
2172 goto bail;
2173 }
2174
Sunil Mushran539d8262008-07-14 17:31:10 -07002175 osb->slot_recovery_generations =
2176 kcalloc(osb->max_slots, sizeof(*osb->slot_recovery_generations),
2177 GFP_KERNEL);
2178 if (!osb->slot_recovery_generations) {
2179 status = -ENOMEM;
2180 mlog_errno(status);
2181 goto bail;
2182 }
2183
Mark Fashehb4df6ed2006-02-22 17:35:08 -08002184 init_waitqueue_head(&osb->osb_wipe_event);
2185 osb->osb_orphan_wipes = kcalloc(osb->max_slots,
2186 sizeof(*osb->osb_orphan_wipes),
2187 GFP_KERNEL);
2188 if (!osb->osb_orphan_wipes) {
2189 status = -ENOMEM;
2190 mlog_errno(status);
2191 goto bail;
2192 }
2193
Tao Ma374a2632009-08-24 11:13:37 +08002194 osb->osb_rf_lock_tree = RB_ROOT;
2195
Mark Fashehccd979b2005-12-15 14:31:24 -08002196 osb->s_feature_compat =
2197 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_compat);
2198 osb->s_feature_ro_compat =
2199 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_ro_compat);
2200 osb->s_feature_incompat =
2201 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_incompat);
2202
2203 if ((i = OCFS2_HAS_INCOMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_INCOMPAT_SUPP))) {
2204 mlog(ML_ERROR, "couldn't mount because of unsupported "
2205 "optional features (%x).\n", i);
2206 status = -EINVAL;
2207 goto bail;
2208 }
2209 if (!(osb->sb->s_flags & MS_RDONLY) &&
2210 (i = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP))) {
2211 mlog(ML_ERROR, "couldn't mount RDWR because of "
2212 "unsupported optional features (%x).\n", i);
2213 status = -EINVAL;
2214 goto bail;
2215 }
2216
Sunil Mushran98f486f2010-10-09 10:24:46 -07002217 if (ocfs2_clusterinfo_valid(osb)) {
2218 osb->osb_stackflags =
2219 OCFS2_RAW_SB(di)->s_cluster_info.ci_stackflags;
Joel Beckerb61817e2008-02-01 15:08:23 -08002220 memcpy(osb->osb_cluster_stack,
2221 OCFS2_RAW_SB(di)->s_cluster_info.ci_stack,
2222 OCFS2_STACK_LABEL_LEN);
2223 osb->osb_cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0';
2224 if (strlen(osb->osb_cluster_stack) != OCFS2_STACK_LABEL_LEN) {
2225 mlog(ML_ERROR,
2226 "couldn't mount because of an invalid "
2227 "cluster stack label (%s) \n",
2228 osb->osb_cluster_stack);
2229 status = -EINVAL;
2230 goto bail;
2231 }
2232 } else {
2233 /* The empty string is identical with classic tools that
2234 * don't know about s_cluster_info. */
2235 osb->osb_cluster_stack[0] = '\0';
2236 }
2237
Mark Fashehccd979b2005-12-15 14:31:24 -08002238 get_random_bytes(&osb->s_next_generation, sizeof(u32));
2239
2240 /* FIXME
2241 * This should be done in ocfs2_journal_init(), but unknown
2242 * ordering issues will cause the filesystem to crash.
2243 * If anyone wants to figure out what part of the code
2244 * refers to osb->journal before ocfs2_journal_init() is run,
2245 * be my guest.
2246 */
2247 /* initialize our journal structure */
2248
Robert P. J. Daycd861282006-12-13 00:34:52 -08002249 journal = kzalloc(sizeof(struct ocfs2_journal), GFP_KERNEL);
Mark Fashehccd979b2005-12-15 14:31:24 -08002250 if (!journal) {
2251 mlog(ML_ERROR, "unable to alloc journal\n");
2252 status = -ENOMEM;
2253 goto bail;
2254 }
2255 osb->journal = journal;
2256 journal->j_osb = osb;
2257
2258 atomic_set(&journal->j_num_trans, 0);
2259 init_rwsem(&journal->j_trans_barrier);
2260 init_waitqueue_head(&journal->j_checkpointed);
2261 spin_lock_init(&journal->j_lock);
2262 journal->j_trans_id = (unsigned long) 1;
2263 INIT_LIST_HEAD(&journal->j_la_cleanups);
David Howellsc4028952006-11-22 14:57:56 +00002264 INIT_WORK(&journal->j_recovery_work, ocfs2_complete_recovery);
Mark Fashehccd979b2005-12-15 14:31:24 -08002265 journal->j_state = OCFS2_JOURNAL_FREE;
2266
Jan Karaea455f82009-01-12 23:20:31 +01002267 INIT_WORK(&osb->dentry_lock_work, ocfs2_drop_dl_inodes);
2268 osb->dentry_lock_list = NULL;
2269
Mark Fashehccd979b2005-12-15 14:31:24 -08002270 /* get some pseudo constants for clustersize bits */
2271 osb->s_clustersize_bits =
2272 le32_to_cpu(di->id2.i_super.s_clustersize_bits);
2273 osb->s_clustersize = 1 << osb->s_clustersize_bits;
Mark Fashehccd979b2005-12-15 14:31:24 -08002274
2275 if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE ||
2276 osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) {
2277 mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n",
2278 osb->s_clustersize);
2279 status = -EINVAL;
2280 goto bail;
2281 }
2282
Patrick J. LoPresti3bdb8ef2010-07-22 15:05:57 -07002283 total_blocks = ocfs2_clusters_to_blocks(osb->sb,
2284 le32_to_cpu(di->i_clusters));
2285
2286 status = generic_check_addressable(osb->sb->s_blocksize_bits,
2287 total_blocks);
2288 if (status) {
2289 mlog(ML_ERROR, "Volume too large "
2290 "to mount safely on this system");
2291 status = -EFBIG;
Mark Fashehccd979b2005-12-15 14:31:24 -08002292 goto bail;
2293 }
2294
2295 if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid,
2296 sizeof(di->id2.i_super.s_uuid))) {
2297 mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n");
2298 status = -ENOMEM;
2299 goto bail;
2300 }
2301
Mark Fasheh78427042006-05-04 12:03:26 -07002302 memcpy(&uuid_net_key, di->id2.i_super.s_uuid, sizeof(uuid_net_key));
Mark Fashehccd979b2005-12-15 14:31:24 -08002303
2304 strncpy(osb->vol_label, di->id2.i_super.s_label, 63);
2305 osb->vol_label[63] = '\0';
2306 osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno);
2307 osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno);
2308 osb->first_cluster_group_blkno =
2309 le64_to_cpu(di->id2.i_super.s_first_cluster_group);
2310 osb->fs_generation = le32_to_cpu(di->i_fs_generation);
Tiger Yangcf1d6c72008-08-18 17:11:00 +08002311 osb->uuid_hash = le32_to_cpu(di->id2.i_super.s_uuid_hash);
Tao Ma32a42d32011-02-23 21:29:08 +08002312 trace_ocfs2_initialize_super(osb->vol_label, osb->uuid_str,
2313 (unsigned long long)osb->root_blkno,
2314 (unsigned long long)osb->system_dir_blkno,
2315 osb->s_clustersize_bits);
Mark Fashehccd979b2005-12-15 14:31:24 -08002316
2317 osb->osb_dlm_debug = ocfs2_new_dlm_debug();
2318 if (!osb->osb_dlm_debug) {
2319 status = -ENOMEM;
2320 mlog_errno(status);
2321 goto bail;
2322 }
2323
2324 atomic_set(&osb->vol_state, VOLUME_INIT);
2325
2326 /* load root, system_dir, and all global system inodes */
2327 status = ocfs2_init_global_system_inodes(osb);
2328 if (status < 0) {
2329 mlog_errno(status);
2330 goto bail;
2331 }
2332
2333 /*
2334 * global bitmap
2335 */
2336 inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE,
2337 OCFS2_INVALID_SLOT);
2338 if (!inode) {
2339 status = -EINVAL;
2340 mlog_errno(status);
2341 goto bail;
2342 }
2343
2344 osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno;
Mark Fasheh6b820212010-04-05 18:17:14 -07002345 osb->osb_clusters_at_boot = OCFS2_I(inode)->ip_clusters;
Mark Fashehccd979b2005-12-15 14:31:24 -08002346 iput(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08002347
Tao Ma85718822010-04-13 14:38:06 +08002348 osb->bitmap_cpg = ocfs2_group_bitmap_size(sb, 0,
2349 osb->s_feature_incompat) * 8;
Mark Fashehccd979b2005-12-15 14:31:24 -08002350
2351 status = ocfs2_init_slot_info(osb);
2352 if (status < 0) {
2353 mlog_errno(status);
2354 goto bail;
2355 }
Dan Magenheimer1cfd8bd2011-05-26 10:02:08 -06002356 cleancache_init_shared_fs((char *)&uuid_net_key, sb);
Mark Fashehccd979b2005-12-15 14:31:24 -08002357
Mark Fashehccd979b2005-12-15 14:31:24 -08002358bail:
Mark Fashehccd979b2005-12-15 14:31:24 -08002359 return status;
2360}
2361
2362/*
2363 * will return: -EAGAIN if it is ok to keep searching for superblocks
2364 * -EINVAL if there is a bad superblock
2365 * 0 on success
2366 */
2367static int ocfs2_verify_volume(struct ocfs2_dinode *di,
2368 struct buffer_head *bh,
Joel Becker73be1922009-01-06 14:57:08 -08002369 u32 blksz,
2370 struct ocfs2_blockcheck_stats *stats)
Mark Fashehccd979b2005-12-15 14:31:24 -08002371{
2372 int status = -EAGAIN;
2373
Mark Fashehccd979b2005-12-15 14:31:24 -08002374 if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE,
2375 strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) {
Joel Beckerd030cc92008-12-11 15:04:14 -08002376 /* We have to do a raw check of the feature here */
2377 if (le32_to_cpu(di->id2.i_super.s_feature_incompat) &
2378 OCFS2_FEATURE_INCOMPAT_META_ECC) {
2379 status = ocfs2_block_check_validate(bh->b_data,
2380 bh->b_size,
Joel Becker73be1922009-01-06 14:57:08 -08002381 &di->i_check,
2382 stats);
Joel Beckerd030cc92008-12-11 15:04:14 -08002383 if (status)
2384 goto out;
2385 }
Mark Fashehccd979b2005-12-15 14:31:24 -08002386 status = -EINVAL;
2387 if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) {
2388 mlog(ML_ERROR, "found superblock with incorrect block "
2389 "size: found %u, should be %u\n",
2390 1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits),
2391 blksz);
2392 } else if (le16_to_cpu(di->id2.i_super.s_major_rev_level) !=
2393 OCFS2_MAJOR_REV_LEVEL ||
2394 le16_to_cpu(di->id2.i_super.s_minor_rev_level) !=
2395 OCFS2_MINOR_REV_LEVEL) {
2396 mlog(ML_ERROR, "found superblock with bad version: "
2397 "found %u.%u, should be %u.%u\n",
2398 le16_to_cpu(di->id2.i_super.s_major_rev_level),
2399 le16_to_cpu(di->id2.i_super.s_minor_rev_level),
2400 OCFS2_MAJOR_REV_LEVEL,
2401 OCFS2_MINOR_REV_LEVEL);
2402 } else if (bh->b_blocknr != le64_to_cpu(di->i_blkno)) {
2403 mlog(ML_ERROR, "bad block number on superblock: "
Mark Fashehb0697052006-03-03 10:24:33 -08002404 "found %llu, should be %llu\n",
Mark Fasheh1ca1a112007-04-27 16:01:25 -07002405 (unsigned long long)le64_to_cpu(di->i_blkno),
Mark Fashehb0697052006-03-03 10:24:33 -08002406 (unsigned long long)bh->b_blocknr);
Mark Fashehccd979b2005-12-15 14:31:24 -08002407 } else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 ||
2408 le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) {
2409 mlog(ML_ERROR, "bad cluster size found: %u\n",
2410 1 << le32_to_cpu(di->id2.i_super.s_clustersize_bits));
2411 } else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) {
2412 mlog(ML_ERROR, "bad root_blkno: 0\n");
2413 } else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) {
2414 mlog(ML_ERROR, "bad system_dir_blkno: 0\n");
2415 } else if (le16_to_cpu(di->id2.i_super.s_max_slots) > OCFS2_MAX_SLOTS) {
2416 mlog(ML_ERROR,
2417 "Superblock slots found greater than file system "
2418 "maximum: found %u, max %u\n",
2419 le16_to_cpu(di->id2.i_super.s_max_slots),
2420 OCFS2_MAX_SLOTS);
2421 } else {
2422 /* found it! */
2423 status = 0;
2424 }
2425 }
2426
Joel Beckerd030cc92008-12-11 15:04:14 -08002427out:
Tao Mac1e8d352011-03-07 16:43:21 +08002428 if (status && status != -EAGAIN)
2429 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08002430 return status;
2431}
2432
2433static int ocfs2_check_volume(struct ocfs2_super *osb)
2434{
Denis Chengbddb8eb32007-09-27 02:10:04 +08002435 int status;
Mark Fashehccd979b2005-12-15 14:31:24 -08002436 int dirty;
Sunil Mushranc271c5c2006-12-05 17:56:35 -08002437 int local;
Mark Fashehccd979b2005-12-15 14:31:24 -08002438 struct ocfs2_dinode *local_alloc = NULL; /* only used if we
2439 * recover
2440 * ourselves. */
2441
Mark Fashehccd979b2005-12-15 14:31:24 -08002442 /* Init our journal object. */
2443 status = ocfs2_journal_init(osb->journal, &dirty);
2444 if (status < 0) {
2445 mlog(ML_ERROR, "Could not initialize journal!\n");
2446 goto finally;
2447 }
2448
Patrick J. LoPresti3bdb8ef2010-07-22 15:05:57 -07002449 /* Now that journal has been initialized, check to make sure
2450 entire volume is addressable. */
2451 status = ocfs2_journal_addressable(osb);
2452 if (status)
2453 goto finally;
2454
Mark Fashehccd979b2005-12-15 14:31:24 -08002455 /* If the journal was unmounted cleanly then we don't want to
2456 * recover anything. Otherwise, journal_load will do that
2457 * dirty work for us :) */
2458 if (!dirty) {
2459 status = ocfs2_journal_wipe(osb->journal, 0);
2460 if (status < 0) {
2461 mlog_errno(status);
2462 goto finally;
2463 }
2464 } else {
2465 mlog(ML_NOTICE, "File system was not unmounted cleanly, "
2466 "recovering volume.\n");
2467 }
2468
Sunil Mushranc271c5c2006-12-05 17:56:35 -08002469 local = ocfs2_mount_local(osb);
2470
Mark Fashehccd979b2005-12-15 14:31:24 -08002471 /* will play back anything left in the journal. */
Sunil Mushran539d8262008-07-14 17:31:10 -07002472 status = ocfs2_journal_load(osb->journal, local, dirty);
Wengang Wang01af4822008-06-10 14:24:48 +08002473 if (status < 0) {
2474 mlog(ML_ERROR, "ocfs2 journal load failed! %d\n", status);
2475 goto finally;
2476 }
Mark Fashehccd979b2005-12-15 14:31:24 -08002477
2478 if (dirty) {
2479 /* recover my local alloc if we didn't unmount cleanly. */
2480 status = ocfs2_begin_local_alloc_recovery(osb,
2481 osb->slot_num,
2482 &local_alloc);
2483 if (status < 0) {
2484 mlog_errno(status);
2485 goto finally;
2486 }
2487 /* we complete the recovery process after we've marked
2488 * ourselves as mounted. */
2489 }
2490
Mark Fashehccd979b2005-12-15 14:31:24 -08002491 status = ocfs2_load_local_alloc(osb);
2492 if (status < 0) {
2493 mlog_errno(status);
2494 goto finally;
2495 }
2496
2497 if (dirty) {
2498 /* Recovery will be completed after we've mounted the
2499 * rest of the volume. */
2500 osb->dirty = 1;
2501 osb->local_alloc_copy = local_alloc;
2502 local_alloc = NULL;
2503 }
2504
2505 /* go through each journal, trylock it and if you get the
2506 * lock, and it's marked as dirty, set the bit in the recover
2507 * map and launch a recovery thread for it. */
2508 status = ocfs2_mark_dead_nodes(osb);
Srinivas Eeda9140db02009-03-06 14:21:46 -08002509 if (status < 0) {
2510 mlog_errno(status);
2511 goto finally;
2512 }
2513
2514 status = ocfs2_compute_replay_slots(osb);
Mark Fashehccd979b2005-12-15 14:31:24 -08002515 if (status < 0)
2516 mlog_errno(status);
2517
2518finally:
2519 if (local_alloc)
2520 kfree(local_alloc);
2521
Tao Mac1e8d352011-03-07 16:43:21 +08002522 if (status)
2523 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08002524 return status;
2525}
2526
2527/*
2528 * The routine gets called from dismount or close whenever a dismount on
2529 * volume is requested and the osb open count becomes 1.
2530 * It will remove the osb from the global list and also free up all the
2531 * initialized resources and fileobject.
2532 */
2533static void ocfs2_delete_osb(struct ocfs2_super *osb)
2534{
Mark Fashehccd979b2005-12-15 14:31:24 -08002535 /* This function assumes that the caller has the main osb resource */
2536
Mark Fasheh8e8a4602008-02-01 11:59:09 -08002537 ocfs2_free_slot_info(osb);
Mark Fashehccd979b2005-12-15 14:31:24 -08002538
Mark Fashehb4df6ed2006-02-22 17:35:08 -08002539 kfree(osb->osb_orphan_wipes);
Sunil Mushran539d8262008-07-14 17:31:10 -07002540 kfree(osb->slot_recovery_generations);
Mark Fashehccd979b2005-12-15 14:31:24 -08002541 /* FIXME
2542 * This belongs in journal shutdown, but because we have to
Uwe Kleine-König421f91d2010-06-11 12:17:00 +02002543 * allocate osb->journal at the start of ocfs2_initialize_osb(),
Mark Fashehccd979b2005-12-15 14:31:24 -08002544 * we free it here.
2545 */
2546 kfree(osb->journal);
2547 if (osb->local_alloc_copy)
2548 kfree(osb->local_alloc_copy);
2549 kfree(osb->uuid_str);
2550 ocfs2_put_dlm_debug(osb->osb_dlm_debug);
2551 memset(osb, 0, sizeof(struct ocfs2_super));
Mark Fashehccd979b2005-12-15 14:31:24 -08002552}
2553
2554/* Put OCFS2 into a readonly state, or (if the user specifies it),
2555 * panic(). We do not support continue-on-error operation. */
2556static void ocfs2_handle_error(struct super_block *sb)
2557{
2558 struct ocfs2_super *osb = OCFS2_SB(sb);
2559
2560 if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_PANIC)
2561 panic("OCFS2: (device %s): panic forced after error\n",
2562 sb->s_id);
2563
2564 ocfs2_set_osb_flag(osb, OCFS2_OSB_ERROR_FS);
2565
2566 if (sb->s_flags & MS_RDONLY &&
2567 (ocfs2_is_soft_readonly(osb) ||
2568 ocfs2_is_hard_readonly(osb)))
2569 return;
2570
2571 printk(KERN_CRIT "File system is now read-only due to the potential "
2572 "of on-disk corruption. Please run fsck.ocfs2 once the file "
2573 "system is unmounted.\n");
2574 sb->s_flags |= MS_RDONLY;
2575 ocfs2_set_ro_flag(osb, 0);
2576}
2577
2578static char error_buf[1024];
2579
2580void __ocfs2_error(struct super_block *sb,
2581 const char *function,
2582 const char *fmt, ...)
2583{
2584 va_list args;
2585
2586 va_start(args, fmt);
Alexey Dobriyan4a6e6172006-12-06 20:37:04 -08002587 vsnprintf(error_buf, sizeof(error_buf), fmt, args);
Mark Fashehccd979b2005-12-15 14:31:24 -08002588 va_end(args);
2589
2590 /* Not using mlog here because we want to show the actual
2591 * function the error came from. */
2592 printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %s\n",
2593 sb->s_id, function, error_buf);
2594
2595 ocfs2_handle_error(sb);
2596}
2597
2598/* Handle critical errors. This is intentionally more drastic than
2599 * ocfs2_handle_error, so we only use for things like journal errors,
2600 * etc. */
2601void __ocfs2_abort(struct super_block* sb,
2602 const char *function,
2603 const char *fmt, ...)
2604{
2605 va_list args;
2606
2607 va_start(args, fmt);
Alexey Dobriyan4a6e6172006-12-06 20:37:04 -08002608 vsnprintf(error_buf, sizeof(error_buf), fmt, args);
Mark Fashehccd979b2005-12-15 14:31:24 -08002609 va_end(args);
2610
2611 printk(KERN_CRIT "OCFS2: abort (device %s): %s: %s\n",
2612 sb->s_id, function, error_buf);
2613
2614 /* We don't have the cluster support yet to go straight to
2615 * hard readonly in here. Until then, we want to keep
2616 * ocfs2_abort() so that we can at least mark critical
2617 * errors.
2618 *
2619 * TODO: This should abort the journal and alert other nodes
2620 * that our slot needs recovery. */
2621
2622 /* Force a panic(). This stinks, but it's better than letting
2623 * things continue without having a proper hard readonly
2624 * here. */
Sunil Mushrana2f2ddb2009-08-19 15:16:01 -07002625 if (!ocfs2_mount_local(OCFS2_SB(sb)))
2626 OCFS2_SB(sb)->s_mount_opt |= OCFS2_MOUNT_ERRORS_PANIC;
Mark Fashehccd979b2005-12-15 14:31:24 -08002627 ocfs2_handle_error(sb);
2628}
2629
Joel Beckere4b963f2009-09-02 17:17:36 -07002630/*
2631 * Void signal blockers, because in-kernel sigprocmask() only fails
2632 * when SIG_* is wrong.
2633 */
2634void ocfs2_block_signals(sigset_t *oldset)
2635{
2636 int rc;
2637 sigset_t blocked;
2638
2639 sigfillset(&blocked);
2640 rc = sigprocmask(SIG_BLOCK, &blocked, oldset);
2641 BUG_ON(rc);
2642}
2643
2644void ocfs2_unblock_signals(sigset_t *oldset)
2645{
2646 int rc = sigprocmask(SIG_SETMASK, oldset, NULL);
2647 BUG_ON(rc);
2648}
2649
Mark Fashehccd979b2005-12-15 14:31:24 -08002650module_init(ocfs2_init);
2651module_exit(ocfs2_exit);