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ocfs2: fix journal commit deadlock in ocfs2_convert_inline_data_to_extents
[linux-2.6-block.git] / fs / ocfs2 / super.c
CommitLineData
ccd979bd
MF		 1/* -*- 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>
ccd979bd
MF		 31#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>
d550071c 41#include <linux/mount.h>
6953b4c0 42#include <linux/seq_file.h>
19ece546 43#include <linux/quotaops.h>
1cfd8bd0 44#include <linux/cleancache.h>
ccd979bd 45
80a9a84d
WW		 46#define CREATE_TRACE_POINTS
47#include "ocfs2_trace.h"
48
ccd979bd
MF		 49#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"
a11f7e63 57#include "aops.h"
d030cc97 58#include "blockcheck.h"
ccd979bd
MF		 59#include "dlmglue.h"
60#include "export.h"
61#include "extent_map.h"
62#include "heartbeat.h"
63#include "inode.h"
64#include "journal.h"
65#include "localalloc.h"
66#include "namei.h"
67#include "slot_map.h"
68#include "super.h"
69#include "sysfile.h"
70#include "uptodate.h"
cf1d6c76 71#include "xattr.h"
9e33d69f 72#include "quota.h"
374a263e 73#include "refcounttree.h"
b89c5428 74#include "suballoc.h"
ccd979bd
MF		 75
76#include "buffer_head_io.h"
77
1a5c4e2a 78static struct kmem_cache *ocfs2_inode_cachep;
9e33d69f
JK		 79struct kmem_cache *ocfs2_dquot_cachep;
80struct kmem_cache *ocfs2_qf_chunk_cachep;
ccd979bd 81
25985edc 82/* OCFS2 needs to schedule several different types of work which
ccd979bd
MF		 83 * 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
1a5c4e2a 88static struct dentry *ocfs2_debugfs_root;
ccd979bd
MF		 89
90MODULE_AUTHOR("Oracle");
91MODULE_LICENSE("GPL");
ff8fb335 92MODULE_DESCRIPTION("OCFS2 cluster file system");
ccd979bd 93
c0123ade
TY		 94struct mount_options
95{
d147b3d6 96 unsigned long commit_interval;
c0123ade
TY		 97 unsigned long mount_opt;
98 unsigned int atime_quantum;
99 signed short slot;
73c8a800 100 int localalloc_opt;
d02f00cc 101 unsigned int resv_level;
83f92318 102 int dir_resv_level;
b61817e1 103 char cluster_stack[OCFS2_STACK_LABEL_LEN + 1];
c0123ade
TY		 104};
105
ccd979bd 106static int ocfs2_parse_options(struct super_block *sb, char *options,
c0123ade 107 struct mount_options *mopt,
baf4661a 108 int is_remount);
5297aad8
JK		 109static int ocfs2_check_set_options(struct super_block *sb,
110 struct mount_options *options);
34c80b1d 111static int ocfs2_show_options(struct seq_file *s, struct dentry *root);
ccd979bd
MF		 112static void ocfs2_put_super(struct super_block *sb);
113static int ocfs2_mount_volume(struct super_block *sb);
114static int ocfs2_remount(struct super_block *sb, int *flags, char *data);
115static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err);
116static int ocfs2_initialize_mem_caches(void);
117static void ocfs2_free_mem_caches(void);
118static void ocfs2_delete_osb(struct ocfs2_super *osb);
119
726c3342 120static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf);
ccd979bd
MF		 121
122static int ocfs2_sync_fs(struct super_block *sb, int wait);
123
124static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb);
125static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb);
bddb8eb3 126static void ocfs2_release_system_inodes(struct ocfs2_super *osb);
ccd979bd
MF		 127static int ocfs2_check_volume(struct ocfs2_super *osb);
128static int ocfs2_verify_volume(struct ocfs2_dinode *di,
129 struct buffer_head *bh,
73be192b
JB		 130 u32 sectsize,
131 struct ocfs2_blockcheck_stats *stats);
ccd979bd
MF		 132static int ocfs2_initialize_super(struct super_block *sb,
133 struct buffer_head *bh,
73be192b
JB		 134 int sector_size,
135 struct ocfs2_blockcheck_stats *stats);
ccd979bd
MF		 136static int ocfs2_get_sector(struct super_block *sb,
137 struct buffer_head **bh,
138 int block,
139 int sect_size);
ccd979bd
MF		 140static struct inode *ocfs2_alloc_inode(struct super_block *sb);
141static void ocfs2_destroy_inode(struct inode *inode);
19ece546
JK		 142static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend);
143static int ocfs2_enable_quotas(struct ocfs2_super *osb);
144static void ocfs2_disable_quotas(struct ocfs2_super *osb);
ccd979bd 145
1c92ec67
JK		 146static struct dquot **ocfs2_get_dquots(struct inode *inode)
147{
148 return OCFS2_I(inode)->i_dquot;
149}
150
ee9b6d61 151static const struct super_operations ocfs2_sops = {
ccd979bd
MF		 152 .statfs = ocfs2_statfs,
153 .alloc_inode = ocfs2_alloc_inode,
154 .destroy_inode = ocfs2_destroy_inode,
155 .drop_inode = ocfs2_drop_inode,
066d92dc 156 .evict_inode = ocfs2_evict_inode,
ccd979bd 157 .sync_fs = ocfs2_sync_fs,
ccd979bd
MF		 158 .put_super = ocfs2_put_super,
159 .remount_fs = ocfs2_remount,
d550071c 160 .show_options = ocfs2_show_options,
9e33d69f
JK		 161 .quota_read = ocfs2_quota_read,
162 .quota_write = ocfs2_quota_write,
1c92ec67 163 .get_dquots = ocfs2_get_dquots,
ccd979bd
MF		 164};
165
166enum {
167 Opt_barrier,
168 Opt_err_panic,
169 Opt_err_ro,
170 Opt_intr,
171 Opt_nointr,
172 Opt_hb_none,
173 Opt_hb_local,
2c442719 174 Opt_hb_global,
ccd979bd
MF		 175 Opt_data_ordered,
176 Opt_data_writeback,
7f1a37e3 177 Opt_atime_quantum,
baf4661a 178 Opt_slot,
d147b3d6 179 Opt_commit,
2fbe8d1e 180 Opt_localalloc,
53fc622b 181 Opt_localflocks,
b61817e1 182 Opt_stack,
cf1d6c76
TY		 183 Opt_user_xattr,
184 Opt_nouser_xattr,
12462f1d 185 Opt_inode64,
a68979b8
TY		 186 Opt_acl,
187 Opt_noacl,
19ece546
JK		 188 Opt_usrquota,
189 Opt_grpquota,
7bdb0d18
TY		 190 Opt_coherency_buffered,
191 Opt_coherency_full,
d02f00cc 192 Opt_resv_level,
83f92318 193 Opt_dir_resv_level,
ccd979bd
MF		 194 Opt_err,
195};
196
a447c093 197static const match_table_t tokens = {
ccd979bd
MF		 198 {Opt_barrier, "barrier=%u"},
199 {Opt_err_panic, "errors=panic"},
200 {Opt_err_ro, "errors=remount-ro"},
201 {Opt_intr, "intr"},
202 {Opt_nointr, "nointr"},
203 {Opt_hb_none, OCFS2_HB_NONE},
204 {Opt_hb_local, OCFS2_HB_LOCAL},
2c442719 205 {Opt_hb_global, OCFS2_HB_GLOBAL},
ccd979bd
MF		 206 {Opt_data_ordered, "data=ordered"},
207 {Opt_data_writeback, "data=writeback"},
7f1a37e3 208 {Opt_atime_quantum, "atime_quantum=%u"},
baf4661a 209 {Opt_slot, "preferred_slot=%u"},
d147b3d6 210 {Opt_commit, "commit=%u"},
2fbe8d1e 211 {Opt_localalloc, "localalloc=%d"},
53fc622b 212 {Opt_localflocks, "localflocks"},
b61817e1 213 {Opt_stack, "cluster_stack=%s"},
cf1d6c76
TY		 214 {Opt_user_xattr, "user_xattr"},
215 {Opt_nouser_xattr, "nouser_xattr"},
12462f1d 216 {Opt_inode64, "inode64"},
a68979b8
TY		 217 {Opt_acl, "acl"},
218 {Opt_noacl, "noacl"},
19ece546
JK		 219 {Opt_usrquota, "usrquota"},
220 {Opt_grpquota, "grpquota"},
7bdb0d18
TY		 221 {Opt_coherency_buffered, "coherency=buffered"},
222 {Opt_coherency_full, "coherency=full"},
d02f00cc 223 {Opt_resv_level, "resv_level=%u"},
83f92318 224 {Opt_dir_resv_level, "dir_resv_level=%u"},
ccd979bd
MF		 225 {Opt_err, NULL}
226};
227
50397507
SM		 228#ifdef CONFIG_DEBUG_FS
229static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len)
230{
50397507
SM		 231 struct ocfs2_cluster_connection *cconn = osb->cconn;
232 struct ocfs2_recovery_map *rm = osb->recovery_map;
df152c24
SM		 233 struct ocfs2_orphan_scan *os = &osb->osb_orphan_scan;
234 int i, out = 0;
50397507
SM		 235
236 out += snprintf(buf + out, len - out,
237 "%10s => Id: %-s Uuid: %-s Gen: 0x%X Label: %-s\n",
238 "Device", osb->dev_str, osb->uuid_str,
239 osb->fs_generation, osb->vol_label);
240
241 out += snprintf(buf + out, len - out,
242 "%10s => State: %d Flags: 0x%lX\n", "Volume",
243 atomic_read(&osb->vol_state), osb->osb_flags);
244
245 out += snprintf(buf + out, len - out,
246 "%10s => Block: %lu Cluster: %d\n", "Sizes",
247 osb->sb->s_blocksize, osb->s_clustersize);
248
249 out += snprintf(buf + out, len - out,
250 "%10s => Compat: 0x%X Incompat: 0x%X "
251 "ROcompat: 0x%X\n",
252 "Features", osb->s_feature_compat,
253 osb->s_feature_incompat, osb->s_feature_ro_compat);
254
255 out += snprintf(buf + out, len - out,
256 "%10s => Opts: 0x%lX AtimeQuanta: %u\n", "Mount",
257 osb->s_mount_opt, osb->s_atime_quantum);
258
c3d38840
SM		 259 if (cconn) {
260 out += snprintf(buf + out, len - out,
261 "%10s => Stack: %s Name: %*s "
262 "Version: %d.%d\n", "Cluster",
263 (*osb->osb_cluster_stack == '\0' ?
264 "o2cb" : osb->osb_cluster_stack),
265 cconn->cc_namelen, cconn->cc_name,
266 cconn->cc_version.pv_major,
267 cconn->cc_version.pv_minor);
268 }
50397507
SM		 269
270 spin_lock(&osb->dc_task_lock);
271 out += snprintf(buf + out, len - out,
272 "%10s => Pid: %d Count: %lu WakeSeq: %lu "
273 "WorkSeq: %lu\n", "DownCnvt",
c3d38840
SM		 274 (osb->dc_task ? task_pid_nr(osb->dc_task) : -1),
275 osb->blocked_lock_count, osb->dc_wake_sequence,
276 osb->dc_work_sequence);
50397507
SM		 277 spin_unlock(&osb->dc_task_lock);
278
279 spin_lock(&osb->osb_lock);
280 out += snprintf(buf + out, len - out, "%10s => Pid: %d Nodes:",
281 "Recovery",
282 (osb->recovery_thread_task ?
283 task_pid_nr(osb->recovery_thread_task) : -1));
284 if (rm->rm_used == 0)
285 out += snprintf(buf + out, len - out, " None\n");
286 else {
287 for (i = 0; i < rm->rm_used; i++)
288 out += snprintf(buf + out, len - out, " %d",
289 rm->rm_entries[i]);
290 out += snprintf(buf + out, len - out, "\n");
291 }
292 spin_unlock(&osb->osb_lock);
293
294 out += snprintf(buf + out, len - out,
8fa9d17f 295 "%10s => Pid: %d Interval: %lu\n", "Commit",
c3d38840 296 (osb->commit_task ? task_pid_nr(osb->commit_task) : -1),
8fa9d17f 297 osb->osb_commit_interval);
50397507
SM		 298
299 out += snprintf(buf + out, len - out,
c3d38840 300 "%10s => State: %d TxnId: %lu NumTxns: %d\n",
50397507 301 "Journal", osb->journal->j_state,
c3d38840
SM		 302 osb->journal->j_trans_id,
303 atomic_read(&osb->journal->j_num_trans));
50397507
SM		 304
305 out += snprintf(buf + out, len - out,
306 "%10s => GlobalAllocs: %d LocalAllocs: %d "
307 "SubAllocs: %d LAWinMoves: %d SAExtends: %d\n",
308 "Stats",
309 atomic_read(&osb->alloc_stats.bitmap_data),
310 atomic_read(&osb->alloc_stats.local_data),
311 atomic_read(&osb->alloc_stats.bg_allocs),
312 atomic_read(&osb->alloc_stats.moves),
313 atomic_read(&osb->alloc_stats.bg_extends));
314
315 out += snprintf(buf + out, len - out,
316 "%10s => State: %u Descriptor: %llu Size: %u bits "
317 "Default: %u bits\n",
318 "LocalAlloc", osb->local_alloc_state,
319 (unsigned long long)osb->la_last_gd,
320 osb->local_alloc_bits, osb->local_alloc_default_bits);
321
322 spin_lock(&osb->osb_lock);
323 out += snprintf(buf + out, len - out,
b89c5428
TY		 324 "%10s => InodeSlot: %d StolenInodes: %d, "
325 "MetaSlot: %d StolenMeta: %d\n", "Steal",
50397507 326 osb->s_inode_steal_slot,
b89c5428
TY		 327 atomic_read(&osb->s_num_inodes_stolen),
328 osb->s_meta_steal_slot,
329 atomic_read(&osb->s_num_meta_stolen));
50397507
SM		 330 spin_unlock(&osb->osb_lock);
331
df152c24
SM		 332 out += snprintf(buf + out, len - out, "OrphanScan => ");
333 out += snprintf(buf + out, len - out, "Local: %u Global: %u ",
334 os->os_count, os->os_seqno);
335 out += snprintf(buf + out, len - out, " Last Scan: ");
336 if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE)
337 out += snprintf(buf + out, len - out, "Disabled\n");
338 else
339 out += snprintf(buf + out, len - out, "%lu seconds ago\n",
340 (get_seconds() - os->os_scantime.tv_sec));
341
50397507
SM		 342 out += snprintf(buf + out, len - out, "%10s => %3s %10s\n",
343 "Slots", "Num", "RecoGen");
50397507
SM		 344 for (i = 0; i < osb->max_slots; ++i) {
345 out += snprintf(buf + out, len - out,
346 "%10s %c %3d %10d\n",
347 " ",
348 (i == osb->slot_num ? '*' : ' '),
349 i, osb->slot_recovery_generations[i]);
350 }
351
352 return out;
353}
354
355static int ocfs2_osb_debug_open(struct inode *inode, struct file *file)
356{
357 struct ocfs2_super *osb = inode->i_private;
358 char *buf = NULL;
359
360 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
361 if (!buf)
362 goto bail;
363
364 i_size_write(inode, ocfs2_osb_dump(osb, buf, PAGE_SIZE));
365
366 file->private_data = buf;
367
368 return 0;
369bail:
370 return -ENOMEM;
371}
372
373static int ocfs2_debug_release(struct inode *inode, struct file *file)
374{
375 kfree(file->private_data);
376 return 0;
377}
378
379static ssize_t ocfs2_debug_read(struct file *file, char __user *buf,
380 size_t nbytes, loff_t *ppos)
381{
382 return simple_read_from_buffer(buf, nbytes, ppos, file->private_data,
383 i_size_read(file->f_mapping->host));
384}
385#else
386static int ocfs2_osb_debug_open(struct inode *inode, struct file *file)
387{
388 return 0;
389}
390static int ocfs2_debug_release(struct inode *inode, struct file *file)
391{
392 return 0;
393}
394static ssize_t ocfs2_debug_read(struct file *file, char __user *buf,
395 size_t nbytes, loff_t *ppos)
396{
397 return 0;
398}
399#endif /* CONFIG_DEBUG_FS */
400
828c0950 401static const struct file_operations ocfs2_osb_debug_fops = {
50397507
SM		 402 .open = ocfs2_osb_debug_open,
403 .release = ocfs2_debug_release,
404 .read = ocfs2_debug_read,
405 .llseek = generic_file_llseek,
406};
407
ccd979bd
MF		 408static int ocfs2_sync_fs(struct super_block *sb, int wait)
409{
bddb8eb3 410 int status;
ccd979bd
MF		 411 tid_t target;
412 struct ocfs2_super *osb = OCFS2_SB(sb);
413
ccd979bd
MF		 414 if (ocfs2_is_hard_readonly(osb))
415 return -EROFS;
416
417 if (wait) {
418 status = ocfs2_flush_truncate_log(osb);
419 if (status < 0)
420 mlog_errno(status);
421 } else {
422 ocfs2_schedule_truncate_log_flush(osb, 0);
423 }
424
2b4e30fb
JB		 425 if (jbd2_journal_start_commit(OCFS2_SB(sb)->journal->j_journal,
426 &target)) {
ccd979bd 427 if (wait)
2b4e30fb
JB		 428 jbd2_log_wait_commit(OCFS2_SB(sb)->journal->j_journal,
429 target);
ccd979bd
MF		 430 }
431 return 0;
432}
433
1a224ad1
JK		 434static int ocfs2_need_system_inode(struct ocfs2_super *osb, int ino)
435{
436 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_USRQUOTA)
437 && (ino == USER_QUOTA_SYSTEM_INODE
438 || ino == LOCAL_USER_QUOTA_SYSTEM_INODE))
439 return 0;
440 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)
441 && (ino == GROUP_QUOTA_SYSTEM_INODE
442 || ino == LOCAL_GROUP_QUOTA_SYSTEM_INODE))
443 return 0;
444 return 1;
445}
446
ccd979bd
MF		 447static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb)
448{
449 struct inode *new = NULL;
450 int status = 0;
451 int i;
452
5fa0613e 453 new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE, 0);
ccd979bd
MF		 454 if (IS_ERR(new)) {
455 status = PTR_ERR(new);
456 mlog_errno(status);
457 goto bail;
458 }
459 osb->root_inode = new;
460
5fa0613e 461 new = ocfs2_iget(osb, osb->system_dir_blkno, OCFS2_FI_FLAG_SYSFILE, 0);
ccd979bd
MF		 462 if (IS_ERR(new)) {
463 status = PTR_ERR(new);
464 mlog_errno(status);
465 goto bail;
466 }
467 osb->sys_root_inode = new;
468
469 for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE;
470 i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) {
1a224ad1
JK		 471 if (!ocfs2_need_system_inode(osb, i))
472 continue;
ccd979bd
MF		 473 new = ocfs2_get_system_file_inode(osb, i, osb->slot_num);
474 if (!new) {
475 ocfs2_release_system_inodes(osb);
476 status = -EINVAL;
477 mlog_errno(status);
478 /* FIXME: Should ERROR_RO_FS */
479 mlog(ML_ERROR, "Unable to load system inode %d, "
480 "possibly corrupt fs?", i);
481 goto bail;
482 }
483 // the array now has one ref, so drop this one
484 iput(new);
485 }
486
487bail:
c1e8d35e
TM		 488 if (status)
489 mlog_errno(status);
ccd979bd
MF		 490 return status;
491}
492
493static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb)
494{
495 struct inode *new = NULL;
496 int status = 0;
497 int i;
498
ccd979bd
MF		 499 for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1;
500 i < NUM_SYSTEM_INODES;
501 i++) {
1a224ad1
JK		 502 if (!ocfs2_need_system_inode(osb, i))
503 continue;
ccd979bd
MF		 504 new = ocfs2_get_system_file_inode(osb, i, osb->slot_num);
505 if (!new) {
506 ocfs2_release_system_inodes(osb);
507 status = -EINVAL;
508 mlog(ML_ERROR, "status=%d, sysfile=%d, slot=%d\n",
509 status, i, osb->slot_num);
510 goto bail;
511 }
512 /* the array now has one ref, so drop this one */
513 iput(new);
514 }
515
516bail:
c1e8d35e
TM		 517 if (status)
518 mlog_errno(status);
ccd979bd
MF		 519 return status;
520}
521
bddb8eb3 522static void ocfs2_release_system_inodes(struct ocfs2_super *osb)
ccd979bd 523{
bddb8eb3 524 int i;
ccd979bd
MF		 525 struct inode *inode;
526
b4d693fc
TM		 527 for (i = 0; i < NUM_GLOBAL_SYSTEM_INODES; i++) {
528 inode = osb->global_system_inodes[i];
ccd979bd
MF		 529 if (inode) {
530 iput(inode);
b4d693fc 531 osb->global_system_inodes[i] = NULL;
ccd979bd
MF		 532 }
533 }
534
535 inode = osb->sys_root_inode;
536 if (inode) {
537 iput(inode);
538 osb->sys_root_inode = NULL;
539 }
540
541 inode = osb->root_inode;
542 if (inode) {
543 iput(inode);
544 osb->root_inode = NULL;
545 }
546
b4d693fc 547 if (!osb->local_system_inodes)
c1e8d35e 548 return;
b4d693fc
TM		 549
550 for (i = 0; i < NUM_LOCAL_SYSTEM_INODES * osb->max_slots; i++) {
551 if (osb->local_system_inodes[i]) {
552 iput(osb->local_system_inodes[i]);
553 osb->local_system_inodes[i] = NULL;
554 }
555 }
556
557 kfree(osb->local_system_inodes);
558 osb->local_system_inodes = NULL;
ccd979bd
MF		 559}
560
561/* We're allocating fs objects, use GFP_NOFS */
562static struct inode *ocfs2_alloc_inode(struct super_block *sb)
563{
564 struct ocfs2_inode_info *oi;
565
e6b4f8da 566 oi = kmem_cache_alloc(ocfs2_inode_cachep, GFP_NOFS);
ccd979bd
MF		 567 if (!oi)
568 return NULL;
569
2931cdcb
DW		 570 oi->i_sync_tid = 0;
571 oi->i_datasync_tid = 0;
1c92ec67 572 memset(&oi->i_dquot, 0, sizeof(oi->i_dquot));
2931cdcb 573
2b4e30fb 574 jbd2_journal_init_jbd_inode(&oi->ip_jinode, &oi->vfs_inode);
ccd979bd
MF		 575 return &oi->vfs_inode;
576}
577
fa0d7e3d 578static void ocfs2_i_callback(struct rcu_head *head)
ccd979bd 579{
fa0d7e3d 580 struct inode *inode = container_of(head, struct inode, i_rcu);
ccd979bd
MF		 581 kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode));
582}
583
fa0d7e3d
NP		 584static void ocfs2_destroy_inode(struct inode *inode)
585{
586 call_rcu(&inode->i_rcu, ocfs2_i_callback);
587}
588
5a254031
MF		 589static unsigned long long ocfs2_max_file_offset(unsigned int bbits,
590 unsigned int cbits)
ccd979bd 591{
5a254031
MF		 592 unsigned int bytes = 1 << cbits;
593 unsigned int trim = bytes;
594 unsigned int bitshift = 32;
595
596 /*
597 * i_size and all block offsets in ocfs2 are always 64 bits
598 * wide. i_clusters is 32 bits, in cluster-sized units. So on
599 * 64 bit platforms, cluster size will be the limiting factor.
ccd979bd
MF		 600 */
601
602#if BITS_PER_LONG == 32
90c699a9 603# if defined(CONFIG_LBDAF)
2ecd05ae 604 BUILD_BUG_ON(sizeof(sector_t) != 8);
5a254031
MF		 605 /*
606 * We might be limited by page cache size.
607 */
608 if (bytes > PAGE_CACHE_SIZE) {
609 bytes = PAGE_CACHE_SIZE;
610 trim = 1;
611 /*
612 * Shift by 31 here so that we don't get larger than
613 * MAX_LFS_FILESIZE
614 */
615 bitshift = 31;
616 }
ccd979bd 617# else
5a254031
MF		 618 /*
619 * We are limited by the size of sector_t. Use block size, as
620 * that's what we expose to the VFS.
621 */
622 bytes = 1 << bbits;
623 trim = 1;
624 bitshift = 31;
ccd979bd
MF		 625# endif
626#endif
627
5a254031
MF		 628 /*
629 * Trim by a whole cluster when we can actually approach the
630 * on-disk limits. Otherwise we can overflow i_clusters when
631 * an extent start is at the max offset.
632 */
633 return (((unsigned long long)bytes) << bitshift) - trim;
ccd979bd
MF		 634}
635
636static int ocfs2_remount(struct super_block *sb, int *flags, char *data)
637{
638 int incompat_features;
639 int ret = 0;
c0123ade 640 struct mount_options parsed_options;
ccd979bd 641 struct ocfs2_super *osb = OCFS2_SB(sb);
2c442719 642 u32 tmp;
ccd979bd 643
02b9984d
TT		 644 sync_filesystem(sb);
645
5297aad8
JK		 646 if (!ocfs2_parse_options(sb, data, &parsed_options, 1) ||
647 !ocfs2_check_set_options(sb, &parsed_options)) {
ccd979bd
MF		 648 ret = -EINVAL;
649 goto out;
650 }
651
2c442719
SM		 652 tmp = OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL |
653 OCFS2_MOUNT_HB_NONE;
654 if ((osb->s_mount_opt & tmp) != (parsed_options.mount_opt & tmp)) {
ccd979bd
MF		 655 ret = -EINVAL;
656 mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n");
657 goto out;
658 }
659
660 if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) !=
c0123ade 661 (parsed_options.mount_opt & OCFS2_MOUNT_DATA_WRITEBACK)) {
ccd979bd
MF		 662 ret = -EINVAL;
663 mlog(ML_ERROR, "Cannot change data mode on remount\n");
664 goto out;
665 }
666
12462f1d
JB		 667 /* Probably don't want this on remount; it might
668 * mess with other nodes */
669 if (!(osb->s_mount_opt & OCFS2_MOUNT_INODE64) &&
670 (parsed_options.mount_opt & OCFS2_MOUNT_INODE64)) {
671 ret = -EINVAL;
672 mlog(ML_ERROR, "Cannot enable inode64 on remount\n");
673 goto out;
674 }
675
ccd979bd
MF		 676 /* We're going to/from readonly mode. */
677 if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
19ece546
JK		 678 /* Disable quota accounting before remounting RO */
679 if (*flags & MS_RDONLY) {
680 ret = ocfs2_susp_quotas(osb, 0);
681 if (ret < 0)
682 goto out;
683 }
ccd979bd
MF		 684 /* Lock here so the check of HARD_RO and the potential
685 * setting of SOFT_RO is atomic. */
686 spin_lock(&osb->osb_lock);
687 if (osb->osb_flags & OCFS2_OSB_HARD_RO) {
688 mlog(ML_ERROR, "Remount on readonly device is forbidden.\n");
689 ret = -EROFS;
690 goto unlock_osb;
691 }
692
693 if (*flags & MS_RDONLY) {
ccd979bd
MF		 694 sb->s_flags |= MS_RDONLY;
695 osb->osb_flags |= OCFS2_OSB_SOFT_RO;
696 } else {
ccd979bd
MF		 697 if (osb->osb_flags & OCFS2_OSB_ERROR_FS) {
698 mlog(ML_ERROR, "Cannot remount RDWR "
699 "filesystem due to previous errors.\n");
700 ret = -EROFS;
701 goto unlock_osb;
702 }
703 incompat_features = OCFS2_HAS_RO_COMPAT_FEATURE(sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP);
704 if (incompat_features) {
705 mlog(ML_ERROR, "Cannot remount RDWR because "
706 "of unsupported optional features "
707 "(%x).\n", incompat_features);
708 ret = -EINVAL;
709 goto unlock_osb;
710 }
711 sb->s_flags &= ~MS_RDONLY;
712 osb->osb_flags &= ~OCFS2_OSB_SOFT_RO;
713 }
32a42d39 714 trace_ocfs2_remount(sb->s_flags, osb->osb_flags, *flags);
ccd979bd
MF		 715unlock_osb:
716 spin_unlock(&osb->osb_lock);
19ece546
JK		 717 /* Enable quota accounting after remounting RW */
718 if (!ret && !(*flags & MS_RDONLY)) {
719 if (sb_any_quota_suspended(sb))
720 ret = ocfs2_susp_quotas(osb, 1);
721 else
722 ret = ocfs2_enable_quotas(osb);
723 if (ret < 0) {
724 /* Return back changes... */
725 spin_lock(&osb->osb_lock);
726 sb->s_flags |= MS_RDONLY;
727 osb->osb_flags |= OCFS2_OSB_SOFT_RO;
728 spin_unlock(&osb->osb_lock);
729 goto out;
730 }
731 }
ccd979bd
MF		 732 }
733
734 if (!ret) {
ccd979bd
MF		 735 /* Only save off the new mount options in case of a successful
736 * remount. */
c0123ade
TY		 737 osb->s_mount_opt = parsed_options.mount_opt;
738 osb->s_atime_quantum = parsed_options.atime_quantum;
739 osb->preferred_slot = parsed_options.slot;
d147b3d6
MF		 740 if (parsed_options.commit_interval)
741 osb->osb_commit_interval = parsed_options.commit_interval;
e001e796
MF		 742
743 if (!ocfs2_is_hard_readonly(osb))
744 ocfs2_set_journal_params(osb);
57b09bb5
JK		 745
746 sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
747 ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ?
748 MS_POSIXACL : 0);
ccd979bd
MF		 749 }
750out:
751 return ret;
752}
753
754static int ocfs2_sb_probe(struct super_block *sb,
755 struct buffer_head **bh,
73be192b
JB		 756 int *sector_size,
757 struct ocfs2_blockcheck_stats *stats)
ccd979bd 758{
bddb8eb3 759 int status, tmpstat;
ccd979bd
MF		 760 struct ocfs1_vol_disk_hdr *hdr;
761 struct ocfs2_dinode *di;
762 int blksize;
763
764 *bh = NULL;
765
766 /* may be > 512 */
e1defc4f 767 *sector_size = bdev_logical_block_size(sb->s_bdev);
ccd979bd
MF		 768 if (*sector_size > OCFS2_MAX_BLOCKSIZE) {
769 mlog(ML_ERROR, "Hardware sector size too large: %d (max=%d)\n",
770 *sector_size, OCFS2_MAX_BLOCKSIZE);
771 status = -EINVAL;
772 goto bail;
773 }
774
775 /* Can this really happen? */
776 if (*sector_size < OCFS2_MIN_BLOCKSIZE)
777 *sector_size = OCFS2_MIN_BLOCKSIZE;
778
779 /* check block zero for old format */
780 status = ocfs2_get_sector(sb, bh, 0, *sector_size);
781 if (status < 0) {
782 mlog_errno(status);
783 goto bail;
784 }
785 hdr = (struct ocfs1_vol_disk_hdr *) (*bh)->b_data;
786 if (hdr->major_version == OCFS1_MAJOR_VERSION) {
787 mlog(ML_ERROR, "incompatible version: %u.%u\n",
788 hdr->major_version, hdr->minor_version);
789 status = -EINVAL;
790 }
791 if (memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE,
792 strlen(OCFS1_VOLUME_SIGNATURE)) == 0) {
793 mlog(ML_ERROR, "incompatible volume signature: %8s\n",
794 hdr->signature);
795 status = -EINVAL;
796 }
797 brelse(*bh);
798 *bh = NULL;
799 if (status < 0) {
800 mlog(ML_ERROR, "This is an ocfs v1 filesystem which must be "
801 "upgraded before mounting with ocfs v2\n");
802 goto bail;
803 }
804
805 /*
806 * Now check at magic offset for 512, 1024, 2048, 4096
807 * blocksizes. 4096 is the maximum blocksize because it is
808 * the minimum clustersize.
809 */
810 status = -EINVAL;
811 for (blksize = *sector_size;
812 blksize <= OCFS2_MAX_BLOCKSIZE;
813 blksize <<= 1) {
814 tmpstat = ocfs2_get_sector(sb, bh,
815 OCFS2_SUPER_BLOCK_BLKNO,
816 blksize);
817 if (tmpstat < 0) {
818 status = tmpstat;
819 mlog_errno(status);
fb5cbe9e 820 break;
ccd979bd
MF		 821 }
822 di = (struct ocfs2_dinode *) (*bh)->b_data;
73be192b 823 memset(stats, 0, sizeof(struct ocfs2_blockcheck_stats));
1c1d9793 824 spin_lock_init(&stats->b_lock);
fb5cbe9e
JB		 825 tmpstat = ocfs2_verify_volume(di, *bh, blksize, stats);
826 if (tmpstat < 0) {
827 brelse(*bh);
828 *bh = NULL;
829 }
830 if (tmpstat != -EAGAIN) {
831 status = tmpstat;
ccd979bd 832 break;
fb5cbe9e 833 }
ccd979bd
MF		 834 }
835
836bail:
837 return status;
838}
839
c271c5c2
SM		 840static int ocfs2_verify_heartbeat(struct ocfs2_super *osb)
841{
2c442719
SM		 842 u32 hb_enabled = OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL;
843
844 if (osb->s_mount_opt & hb_enabled) {
845 if (ocfs2_mount_local(osb)) {
c271c5c2
SM		 846 mlog(ML_ERROR, "Cannot heartbeat on a locally "
847 "mounted device.\n");
848 return -EINVAL;
849 }
2c442719 850 if (ocfs2_userspace_stack(osb)) {
b61817e1
JB		 851 mlog(ML_ERROR, "Userspace stack expected, but "
852 "o2cb heartbeat arguments passed to mount\n");
853 return -EINVAL;
854 }
2c442719
SM		 855 if (((osb->s_mount_opt & OCFS2_MOUNT_HB_GLOBAL) &&
856 !ocfs2_cluster_o2cb_global_heartbeat(osb)) ||
857 ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) &&
858 ocfs2_cluster_o2cb_global_heartbeat(osb))) {
859 mlog(ML_ERROR, "Mismatching o2cb heartbeat modes\n");
860 return -EINVAL;
861 }
b61817e1
JB		 862 }
863
2c442719 864 if (!(osb->s_mount_opt & hb_enabled)) {
b61817e1
JB		 865 if (!ocfs2_mount_local(osb) && !ocfs2_is_hard_readonly(osb) &&
866 !ocfs2_userspace_stack(osb)) {
c271c5c2
SM		 867 mlog(ML_ERROR, "Heartbeat has to be started to mount "
868 "a read-write clustered device.\n");
869 return -EINVAL;
870 }
871 }
872
873 return 0;
874}
875
b61817e1
JB		 876/*
877 * If we're using a userspace stack, mount should have passed
878 * a name that matches the disk. If not, mount should not
879 * have passed a stack.
880 */
881static int ocfs2_verify_userspace_stack(struct ocfs2_super *osb,
882 struct mount_options *mopt)
883{
884 if (!ocfs2_userspace_stack(osb) && mopt->cluster_stack[0]) {
885 mlog(ML_ERROR,
886 "cluster stack passed to mount, but this filesystem "
887 "does not support it\n");
888 return -EINVAL;
889 }
890
891 if (ocfs2_userspace_stack(osb) &&
892 strncmp(osb->osb_cluster_stack, mopt->cluster_stack,
893 OCFS2_STACK_LABEL_LEN)) {
894 mlog(ML_ERROR,
895 "cluster stack passed to mount (\"%s\") does not "
896 "match the filesystem (\"%s\")\n",
897 mopt->cluster_stack,
898 osb->osb_cluster_stack);
899 return -EINVAL;
900 }
901
902 return 0;
903}
904
19ece546
JK		 905static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend)
906{
907 int type;
908 struct super_block *sb = osb->sb;
52362810
JK		 909 unsigned int feature[OCFS2_MAXQUOTAS] = {
910 OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
911 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
19ece546
JK		 912 int status = 0;
913
52362810 914 for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
19ece546
JK		 915 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
916 continue;
917 if (unsuspend)
0f0dd62f 918 status = dquot_resume(sb, type);
eea7feb0
JK		 919 else {
920 struct ocfs2_mem_dqinfo *oinfo;
921
922 /* Cancel periodic syncing before suspending */
923 oinfo = sb_dqinfo(sb, type)->dqi_priv;
924 cancel_delayed_work_sync(&oinfo->dqi_sync_work);
0f0dd62f 925 status = dquot_suspend(sb, type);
eea7feb0 926 }
19ece546
JK		 927 if (status < 0)
928 break;
929 }
930 if (status < 0)
931 mlog(ML_ERROR, "Failed to suspend/unsuspend quotas on "
932 "remount (error = %d).\n", status);
933 return status;
934}
935
936static int ocfs2_enable_quotas(struct ocfs2_super *osb)
937{
52362810 938 struct inode *inode[OCFS2_MAXQUOTAS] = { NULL, NULL };
19ece546 939 struct super_block *sb = osb->sb;
52362810
JK		 940 unsigned int feature[OCFS2_MAXQUOTAS] = {
941 OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
942 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
943 unsigned int ino[OCFS2_MAXQUOTAS] = {
944 LOCAL_USER_QUOTA_SYSTEM_INODE,
19ece546
JK		 945 LOCAL_GROUP_QUOTA_SYSTEM_INODE };
946 int status;
947 int type;
948
949 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NEGATIVE_USAGE;
52362810 950 for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
19ece546
JK		 951 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
952 continue;
953 inode[type] = ocfs2_get_system_file_inode(osb, ino[type],
954 osb->slot_num);
955 if (!inode[type]) {
956 status = -ENOENT;
957 goto out_quota_off;
958 }
287a8095
CH		 959 status = dquot_enable(inode[type], type, QFMT_OCFS2,
960 DQUOT_USAGE_ENABLED);
19ece546
JK		 961 if (status < 0)
962 goto out_quota_off;
963 }
964
52362810 965 for (type = 0; type < OCFS2_MAXQUOTAS; type++)
19ece546
JK		 966 iput(inode[type]);
967 return 0;
968out_quota_off:
969 ocfs2_disable_quotas(osb);
52362810 970 for (type = 0; type < OCFS2_MAXQUOTAS; type++)
19ece546
JK		 971 iput(inode[type]);
972 mlog_errno(status);
973 return status;
974}
975
976static void ocfs2_disable_quotas(struct ocfs2_super *osb)
977{
978 int type;
979 struct inode *inode;
980 struct super_block *sb = osb->sb;
c06bcbfa 981 struct ocfs2_mem_dqinfo *oinfo;
19ece546
JK		 982
983 /* We mostly ignore errors in this function because there's not much
984 * we can do when we see them */
52362810 985 for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
19ece546
JK		 986 if (!sb_has_quota_loaded(sb, type))
987 continue;
c06bcbfa
JK		 988 /* Cancel periodic syncing before we grab dqonoff_mutex */
989 oinfo = sb_dqinfo(sb, type)->dqi_priv;
990 cancel_delayed_work_sync(&oinfo->dqi_sync_work);
19ece546
JK		 991 inode = igrab(sb->s_dquot.files[type]);
992 /* Turn off quotas. This will remove all dquot structures from
993 * memory and so they will be automatically synced to global
994 * quota files */
0f0dd62f
CH		 995 dquot_disable(sb, type, DQUOT_USAGE_ENABLED |
996 DQUOT_LIMITS_ENABLED);
19ece546
JK		 997 if (!inode)
998 continue;
999 iput(inode);
1000 }
1001}
1002
1003/* Handle quota on quotactl */
f00c9e44 1004static int ocfs2_quota_on(struct super_block *sb, int type, int format_id)
19ece546 1005{
52362810
JK		 1006 unsigned int feature[OCFS2_MAXQUOTAS] = {
1007 OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
1008 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
19ece546
JK		 1009
1010 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
1011 return -EINVAL;
1012
287a8095
CH		 1013 return dquot_enable(sb_dqopt(sb)->files[type], type,
1014 format_id, DQUOT_LIMITS_ENABLED);
19ece546
JK		 1015}
1016
1017/* Handle quota off quotactl */
307ae18a 1018static int ocfs2_quota_off(struct super_block *sb, int type)
19ece546 1019{
0f0dd62f 1020 return dquot_disable(sb, type, DQUOT_LIMITS_ENABLED);
19ece546
JK		 1021}
1022
0d54b217 1023static const struct quotactl_ops ocfs2_quotactl_ops = {
f00c9e44 1024 .quota_on_meta = ocfs2_quota_on,
19ece546 1025 .quota_off = ocfs2_quota_off,
287a8095
CH		 1026 .quota_sync = dquot_quota_sync,
1027 .get_info = dquot_get_dqinfo,
1028 .set_info = dquot_set_dqinfo,
1029 .get_dqblk = dquot_get_dqblk,
1030 .set_dqblk = dquot_set_dqblk,
19ece546
JK		 1031};
1032
ccd979bd
MF		 1033static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
1034{
1035 struct dentry *root;
1036 int status, sector_size;
c0123ade 1037 struct mount_options parsed_options;
ccd979bd
MF		 1038 struct inode *inode = NULL;
1039 struct ocfs2_super *osb = NULL;
1040 struct buffer_head *bh = NULL;
49fa8140 1041 char nodestr[12];
73be192b 1042 struct ocfs2_blockcheck_stats stats;
ccd979bd 1043
32a42d39 1044 trace_ocfs2_fill_super(sb, data, silent);
ccd979bd 1045
c0123ade 1046 if (!ocfs2_parse_options(sb, data, &parsed_options, 0)) {
ccd979bd
MF		 1047 status = -EINVAL;
1048 goto read_super_error;
1049 }
1050
1051 /* probe for superblock */
73be192b 1052 status = ocfs2_sb_probe(sb, &bh, &sector_size, &stats);
ccd979bd
MF		 1053 if (status < 0) {
1054 mlog(ML_ERROR, "superblock probe failed!\n");
1055 goto read_super_error;
1056 }
1057
73be192b 1058 status = ocfs2_initialize_super(sb, bh, sector_size, &stats);
ccd979bd
MF		 1059 osb = OCFS2_SB(sb);
1060 if (status < 0) {
1061 mlog_errno(status);
1062 goto read_super_error;
1063 }
1064 brelse(bh);
1065 bh = NULL;
a68979b8 1066
5297aad8
JK		 1067 if (!ocfs2_check_set_options(sb, &parsed_options)) {
1068 status = -EINVAL;
1069 goto read_super_error;
1070 }
c0123ade
TY		 1071 osb->s_mount_opt = parsed_options.mount_opt;
1072 osb->s_atime_quantum = parsed_options.atime_quantum;
1073 osb->preferred_slot = parsed_options.slot;
d147b3d6 1074 osb->osb_commit_interval = parsed_options.commit_interval;
73c8a800
MF		 1075
1076 ocfs2_la_set_sizes(osb, parsed_options.localalloc_opt);
d02f00cc 1077 osb->osb_resv_level = parsed_options.resv_level;
83f92318
MF		 1078 osb->osb_dir_resv_level = parsed_options.resv_level;
1079 if (parsed_options.dir_resv_level == -1)
1080 osb->osb_dir_resv_level = parsed_options.resv_level;
1081 else
1082 osb->osb_dir_resv_level = parsed_options.dir_resv_level;
ccd979bd 1083
b61817e1
JB		 1084 status = ocfs2_verify_userspace_stack(osb, &parsed_options);
1085 if (status)
1086 goto read_super_error;
1087
ccd979bd
MF		 1088 sb->s_magic = OCFS2_SUPER_MAGIC;
1089
9e1f1de0 1090 sb->s_flags = (sb->s_flags & ~(MS_POSIXACL | MS_NOSEC)) |
a68979b8
TY		 1091 ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0);
1092
ccd979bd
MF		 1093 /* Hard readonly mode only if: bdev_read_only, MS_RDONLY,
1094 * heartbeat=none */
1095 if (bdev_read_only(sb->s_bdev)) {
1096 if (!(sb->s_flags & MS_RDONLY)) {
1097 status = -EACCES;
1098 mlog(ML_ERROR, "Readonly device detected but readonly "
1099 "mount was not specified.\n");
1100 goto read_super_error;
1101 }
1102
1103 /* You should not be able to start a local heartbeat
1104 * on a readonly device. */
1105 if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) {
1106 status = -EROFS;
1107 mlog(ML_ERROR, "Local heartbeat specified on readonly "
1108 "device.\n");
1109 goto read_super_error;
1110 }
1111
1112 status = ocfs2_check_journals_nolocks(osb);
1113 if (status < 0) {
1114 if (status == -EROFS)
1115 mlog(ML_ERROR, "Recovery required on readonly "
1116 "file system, but write access is "
1117 "unavailable.\n");
1118 else
2bd63216 1119 mlog_errno(status);
ccd979bd
MF		 1120 goto read_super_error;
1121 }
1122
1123 ocfs2_set_ro_flag(osb, 1);
1124
619c200d
SM		 1125 printk(KERN_NOTICE "ocfs2: Readonly device (%s) detected. "
1126 "Cluster services will not be used for this mount. "
1127 "Recovery will be skipped.\n", osb->dev_str);
ccd979bd
MF		 1128 }
1129
1130 if (!ocfs2_is_hard_readonly(osb)) {
ccd979bd
MF		 1131 if (sb->s_flags & MS_RDONLY)
1132 ocfs2_set_ro_flag(osb, 0);
1133 }
1134
c271c5c2
SM		 1135 status = ocfs2_verify_heartbeat(osb);
1136 if (status < 0) {
1137 mlog_errno(status);
1138 goto read_super_error;
1139 }
1140
ccd979bd
MF		 1141 osb->osb_debug_root = debugfs_create_dir(osb->uuid_str,
1142 ocfs2_debugfs_root);
1143 if (!osb->osb_debug_root) {
1144 status = -EINVAL;
1145 mlog(ML_ERROR, "Unable to create per-mount debugfs root.\n");
1146 goto read_super_error;
1147 }
1148
50397507
SM		 1149 osb->osb_ctxt = debugfs_create_file("fs_state", S_IFREG|S_IRUSR,
1150 osb->osb_debug_root,
1151 osb,
1152 &ocfs2_osb_debug_fops);
1153 if (!osb->osb_ctxt) {
1154 status = -EINVAL;
1155 mlog_errno(status);
1156 goto read_super_error;
1157 }
1158
73be192b
JB		 1159 if (ocfs2_meta_ecc(osb)) {
1160 status = ocfs2_blockcheck_stats_debugfs_install(
1161 &osb->osb_ecc_stats,
1162 osb->osb_debug_root);
1163 if (status) {
1164 mlog(ML_ERROR,
1165 "Unable to create blockcheck statistics "
1166 "files\n");
1167 goto read_super_error;
1168 }
1169 }
1170
ccd979bd 1171 status = ocfs2_mount_volume(sb);
ccd979bd
MF		 1172 if (status < 0)
1173 goto read_super_error;
1174
be0d93f0
AV		 1175 if (osb->root_inode)
1176 inode = igrab(osb->root_inode);
1177
ccd979bd
MF		 1178 if (!inode) {
1179 status = -EIO;
1180 mlog_errno(status);
1181 goto read_super_error;
1182 }
1183
48fde701 1184 root = d_make_root(inode);
ccd979bd
MF		 1185 if (!root) {
1186 status = -ENOMEM;
1187 mlog_errno(status);
1188 goto read_super_error;
1189 }
1190
1191 sb->s_root = root;
1192
1193 ocfs2_complete_mount_recovery(osb);
1194
c271c5c2
SM		 1195 if (ocfs2_mount_local(osb))
1196 snprintf(nodestr, sizeof(nodestr), "local");
1197 else
19fdb624 1198 snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num);
c271c5c2
SM		 1199
1200 printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %s, slot %d) "
781ee3e2 1201 "with %s data mode.\n",
c271c5c2 1202 osb->dev_str, nodestr, osb->slot_num,
ccd979bd
MF		 1203 osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" :
1204 "ordered");
1205
1206 atomic_set(&osb->vol_state, VOLUME_MOUNTED);
1207 wake_up(&osb->osb_mount_event);
1208
19ece546
JK		 1209 /* Now we can initialize quotas because we can afford to wait
1210 * for cluster locks recovery now. That also means that truncation
1211 * log recovery can happen but that waits for proper quota setup */
1212 if (!(sb->s_flags & MS_RDONLY)) {
1213 status = ocfs2_enable_quotas(osb);
1214 if (status < 0) {
1215 /* We have to err-out specially here because
1216 * s_root is already set */
1217 mlog_errno(status);
1218 atomic_set(&osb->vol_state, VOLUME_DISABLED);
1219 wake_up(&osb->osb_mount_event);
19ece546
JK		 1220 return status;
1221 }
1222 }
1223
1224 ocfs2_complete_quota_recovery(osb);
1225
1226 /* Now we wake up again for processes waiting for quotas */
1227 atomic_set(&osb->vol_state, VOLUME_MOUNTED_QUOTAS);
1228 wake_up(&osb->osb_mount_event);
1229
df152c24 1230 /* Start this when the mount is almost sure of being successful */
8b712cd5 1231 ocfs2_orphan_scan_start(osb);
df152c24 1232
ccd979bd
MF		 1233 return status;
1234
1235read_super_error:
a81cb88b 1236 brelse(bh);
ccd979bd 1237
ccd979bd
MF		 1238 if (osb) {
1239 atomic_set(&osb->vol_state, VOLUME_DISABLED);
1240 wake_up(&osb->osb_mount_event);
1241 ocfs2_dismount_volume(sb, 1);
1242 }
1243
c1e8d35e
TM		 1244 if (status)
1245 mlog_errno(status);
ccd979bd
MF		 1246 return status;
1247}
1248
152a0836 1249static struct dentry *ocfs2_mount(struct file_system_type *fs_type,
454e2398
DH		 1250 int flags,
1251 const char *dev_name,
152a0836 1252 void *data)
ccd979bd 1253{
152a0836 1254 return mount_bdev(fs_type, flags, dev_name, data, ocfs2_fill_super);
ccd979bd
MF		 1255}
1256
1257static struct file_system_type ocfs2_fs_type = {
1258 .owner = THIS_MODULE,
1259 .name = "ocfs2",
152a0836 1260 .mount = ocfs2_mount,
8ed6b237 1261 .kill_sb = kill_block_super,
1ba9da2f 1262 .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE,
ccd979bd
MF		 1263 .next = NULL
1264};
91417705 1265MODULE_ALIAS_FS("ocfs2");
ccd979bd 1266
5297aad8
JK		 1267static int ocfs2_check_set_options(struct super_block *sb,
1268 struct mount_options *options)
1269{
1270 if (options->mount_opt & OCFS2_MOUNT_USRQUOTA &&
1271 !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
1272 OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) {
1273 mlog(ML_ERROR, "User quotas were requested, but this "
1274 "filesystem does not have the feature enabled.\n");
1275 return 0;
1276 }
1277 if (options->mount_opt & OCFS2_MOUNT_GRPQUOTA &&
1278 !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
1279 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) {
1280 mlog(ML_ERROR, "Group quotas were requested, but this "
1281 "filesystem does not have the feature enabled.\n");
1282 return 0;
1283 }
1284 if (options->mount_opt & OCFS2_MOUNT_POSIX_ACL &&
1285 !OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR)) {
1286 mlog(ML_ERROR, "ACL support requested but extended attributes "
1287 "feature is not enabled\n");
1288 return 0;
1289 }
1290 /* No ACL setting specified? Use XATTR feature... */
1291 if (!(options->mount_opt & (OCFS2_MOUNT_POSIX_ACL |
1292 OCFS2_MOUNT_NO_POSIX_ACL))) {
1293 if (OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR))
1294 options->mount_opt |= OCFS2_MOUNT_POSIX_ACL;
1295 else
1296 options->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL;
1297 }
1298 return 1;
1299}
1300
ccd979bd
MF		 1301static int ocfs2_parse_options(struct super_block *sb,
1302 char *options,
c0123ade 1303 struct mount_options *mopt,
ccd979bd
MF		 1304 int is_remount)
1305{
52c303c5 1306 int status, user_stack = 0;
ccd979bd 1307 char *p;
2c442719 1308 u32 tmp;
ccd979bd 1309
32a42d39 1310 trace_ocfs2_parse_options(is_remount, options ? options : "(none)");
ccd979bd 1311
d147b3d6 1312 mopt->commit_interval = 0;
4b37fcb7 1313 mopt->mount_opt = OCFS2_MOUNT_NOINTR;
c0123ade
TY		 1314 mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
1315 mopt->slot = OCFS2_INVALID_SLOT;
73c8a800 1316 mopt->localalloc_opt = -1;
b61817e1 1317 mopt->cluster_stack[0] = '\0';
d02f00cc 1318 mopt->resv_level = OCFS2_DEFAULT_RESV_LEVEL;
83f92318 1319 mopt->dir_resv_level = -1;
ccd979bd
MF		 1320
1321 if (!options) {
1322 status = 1;
1323 goto bail;
1324 }
1325
1326 while ((p = strsep(&options, ",")) != NULL) {
1327 int token, option;
1328 substring_t args[MAX_OPT_ARGS];
1329
1330 if (!*p)
1331 continue;
1332
1333 token = match_token(p, tokens, args);
1334 switch (token) {
1335 case Opt_hb_local:
c0123ade 1336 mopt->mount_opt |= OCFS2_MOUNT_HB_LOCAL;
ccd979bd
MF		 1337 break;
1338 case Opt_hb_none:
2c442719
SM		 1339 mopt->mount_opt |= OCFS2_MOUNT_HB_NONE;
1340 break;
1341 case Opt_hb_global:
1342 mopt->mount_opt |= OCFS2_MOUNT_HB_GLOBAL;
ccd979bd
MF		 1343 break;
1344 case Opt_barrier:
1345 if (match_int(&args[0], &option)) {
1346 status = 0;
1347 goto bail;
1348 }
1349 if (option)
c0123ade 1350 mopt->mount_opt |= OCFS2_MOUNT_BARRIER;
ccd979bd 1351 else
c0123ade 1352 mopt->mount_opt &= ~OCFS2_MOUNT_BARRIER;
ccd979bd
MF		 1353 break;
1354 case Opt_intr:
c0123ade 1355 mopt->mount_opt &= ~OCFS2_MOUNT_NOINTR;
ccd979bd
MF		 1356 break;
1357 case Opt_nointr:
c0123ade 1358 mopt->mount_opt |= OCFS2_MOUNT_NOINTR;
ccd979bd
MF		 1359 break;
1360 case Opt_err_panic:
c0123ade 1361 mopt->mount_opt |= OCFS2_MOUNT_ERRORS_PANIC;
ccd979bd
MF		 1362 break;
1363 case Opt_err_ro:
c0123ade 1364 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC;
ccd979bd
MF		 1365 break;
1366 case Opt_data_ordered:
c0123ade 1367 mopt->mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK;
ccd979bd
MF		 1368 break;
1369 case Opt_data_writeback:
c0123ade 1370 mopt->mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK;
ccd979bd 1371 break;
cf1d6c76
TY		 1372 case Opt_user_xattr:
1373 mopt->mount_opt &= ~OCFS2_MOUNT_NOUSERXATTR;
1374 break;
1375 case Opt_nouser_xattr:
1376 mopt->mount_opt |= OCFS2_MOUNT_NOUSERXATTR;
1377 break;
7f1a37e3
TY		 1378 case Opt_atime_quantum:
1379 if (match_int(&args[0], &option)) {
1380 status = 0;
1381 goto bail;
1382 }
1383 if (option >= 0)
c0123ade 1384 mopt->atime_quantum = option;
7f1a37e3 1385 break;
baf4661a
SM		 1386 case Opt_slot:
1387 option = 0;
1388 if (match_int(&args[0], &option)) {
1389 status = 0;
1390 goto bail;
1391 }
1392 if (option)
c0123ade 1393 mopt->slot = (s16)option;
baf4661a 1394 break;
d147b3d6
MF		 1395 case Opt_commit:
1396 option = 0;
1397 if (match_int(&args[0], &option)) {
1398 status = 0;
1399 goto bail;
1400 }
1401 if (option < 0)
1402 return 0;
1403 if (option == 0)
2b4e30fb 1404 option = JBD2_DEFAULT_MAX_COMMIT_AGE;
d147b3d6
MF		 1405 mopt->commit_interval = HZ * option;
1406 break;
2fbe8d1e
SM		 1407 case Opt_localalloc:
1408 option = 0;
1409 if (match_int(&args[0], &option)) {
1410 status = 0;
1411 goto bail;
1412 }
73c8a800 1413 if (option >= 0)
2fbe8d1e
SM		 1414 mopt->localalloc_opt = option;
1415 break;
53fc622b
MF		 1416 case Opt_localflocks:
1417 /*
1418 * Changing this during remount could race
1419 * flock() requests, or "unbalance" existing
1420 * ones (e.g., a lock is taken in one mode but
1421 * dropped in the other). If users care enough
1422 * to flip locking modes during remount, we
1423 * could add a "local" flag to individual
1424 * flock structures for proper tracking of
1425 * state.
1426 */
1427 if (!is_remount)
1428 mopt->mount_opt |= OCFS2_MOUNT_LOCALFLOCKS;
1429 break;
b61817e1
JB		 1430 case Opt_stack:
1431 /* Check both that the option we were passed
1432 * is of the right length and that it is a proper
1433 * string of the right length.
1434 */
1435 if (((args[0].to - args[0].from) !=
1436 OCFS2_STACK_LABEL_LEN) ||
1437 (strnlen(args[0].from,
1438 OCFS2_STACK_LABEL_LEN) !=
1439 OCFS2_STACK_LABEL_LEN)) {
1440 mlog(ML_ERROR,
1441 "Invalid cluster_stack option\n");
1442 status = 0;
1443 goto bail;
1444 }
1445 memcpy(mopt->cluster_stack, args[0].from,
1446 OCFS2_STACK_LABEL_LEN);
1447 mopt->cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0';
52c303c5
MF		 1448 /*
1449 * Open code the memcmp here as we don't have
1450 * an osb to pass to
1451 * ocfs2_userspace_stack().
1452 */
1453 if (memcmp(mopt->cluster_stack,
1454 OCFS2_CLASSIC_CLUSTER_STACK,
1455 OCFS2_STACK_LABEL_LEN))
1456 user_stack = 1;
b61817e1 1457 break;
12462f1d
JB		 1458 case Opt_inode64:
1459 mopt->mount_opt |= OCFS2_MOUNT_INODE64;
1460 break;
19ece546 1461 case Opt_usrquota:
19ece546
JK		 1462 mopt->mount_opt |= OCFS2_MOUNT_USRQUOTA;
1463 break;
1464 case Opt_grpquota:
19ece546
JK		 1465 mopt->mount_opt |= OCFS2_MOUNT_GRPQUOTA;
1466 break;
7bdb0d18
TY		 1467 case Opt_coherency_buffered:
1468 mopt->mount_opt |= OCFS2_MOUNT_COHERENCY_BUFFERED;
1469 break;
1470 case Opt_coherency_full:
1471 mopt->mount_opt &= ~OCFS2_MOUNT_COHERENCY_BUFFERED;
1472 break;
a68979b8
TY		 1473 case Opt_acl:
1474 mopt->mount_opt |= OCFS2_MOUNT_POSIX_ACL;
5297aad8 1475 mopt->mount_opt &= ~OCFS2_MOUNT_NO_POSIX_ACL;
a68979b8
TY		 1476 break;
1477 case Opt_noacl:
5297aad8 1478 mopt->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL;
a68979b8
TY		 1479 mopt->mount_opt &= ~OCFS2_MOUNT_POSIX_ACL;
1480 break;
d02f00cc
MF		 1481 case Opt_resv_level:
1482 if (is_remount)
1483 break;
1484 if (match_int(&args[0], &option)) {
1485 status = 0;
1486 goto bail;
1487 }
1488 if (option >= OCFS2_MIN_RESV_LEVEL &&
1489 option < OCFS2_MAX_RESV_LEVEL)
1490 mopt->resv_level = option;
1491 break;
83f92318
MF		 1492 case Opt_dir_resv_level:
1493 if (is_remount)
1494 break;
1495 if (match_int(&args[0], &option)) {
1496 status = 0;
1497 goto bail;
1498 }
1499 if (option >= OCFS2_MIN_RESV_LEVEL &&
1500 option < OCFS2_MAX_RESV_LEVEL)
1501 mopt->dir_resv_level = option;
1502 break;
ccd979bd
MF		 1503 default:
1504 mlog(ML_ERROR,
1505 "Unrecognized mount option \"%s\" "
1506 "or missing value\n", p);
1507 status = 0;
1508 goto bail;
1509 }
1510 }
1511
52c303c5
MF		 1512 if (user_stack == 0) {
1513 /* Ensure only one heartbeat mode */
1514 tmp = mopt->mount_opt & (OCFS2_MOUNT_HB_LOCAL |
1515 OCFS2_MOUNT_HB_GLOBAL |
1516 OCFS2_MOUNT_HB_NONE);
1517 if (hweight32(tmp) != 1) {
1518 mlog(ML_ERROR, "Invalid heartbeat mount options\n");
1519 status = 0;
1520 goto bail;
1521 }
2c442719
SM		 1522 }
1523
ccd979bd
MF		 1524 status = 1;
1525
1526bail:
ccd979bd
MF		 1527 return status;
1528}
1529
34c80b1d 1530static int ocfs2_show_options(struct seq_file *s, struct dentry *root)
d550071c 1531{
34c80b1d 1532 struct ocfs2_super *osb = OCFS2_SB(root->d_sb);
d550071c 1533 unsigned long opts = osb->s_mount_opt;
ebcee4b5 1534 unsigned int local_alloc_megs;
d550071c 1535
2c442719
SM		 1536 if (opts & (OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL)) {
1537 seq_printf(s, ",_netdev");
1538 if (opts & OCFS2_MOUNT_HB_LOCAL)
1539 seq_printf(s, ",%s", OCFS2_HB_LOCAL);
1540 else
1541 seq_printf(s, ",%s", OCFS2_HB_GLOBAL);
1542 } else
1543 seq_printf(s, ",%s", OCFS2_HB_NONE);
d550071c
SM		 1544
1545 if (opts & OCFS2_MOUNT_NOINTR)
1546 seq_printf(s, ",nointr");
1547
1548 if (opts & OCFS2_MOUNT_DATA_WRITEBACK)
1549 seq_printf(s, ",data=writeback");
1550 else
1551 seq_printf(s, ",data=ordered");
1552
1553 if (opts & OCFS2_MOUNT_BARRIER)
1554 seq_printf(s, ",barrier=1");
1555
1556 if (opts & OCFS2_MOUNT_ERRORS_PANIC)
1557 seq_printf(s, ",errors=panic");
1558 else
1559 seq_printf(s, ",errors=remount-ro");
1560
1561 if (osb->preferred_slot != OCFS2_INVALID_SLOT)
1562 seq_printf(s, ",preferred_slot=%d", osb->preferred_slot);
1563
34c80b1d 1564 seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum);
d550071c 1565
d147b3d6
MF		 1566 if (osb->osb_commit_interval)
1567 seq_printf(s, ",commit=%u",
1568 (unsigned) (osb->osb_commit_interval / HZ));
1569
ebcee4b5 1570 local_alloc_megs = osb->local_alloc_bits >> (20 - osb->s_clustersize_bits);
6b82021b 1571 if (local_alloc_megs != ocfs2_la_default_mb(osb))
ebcee4b5 1572 seq_printf(s, ",localalloc=%d", local_alloc_megs);
2fbe8d1e 1573
53fc622b
MF		 1574 if (opts & OCFS2_MOUNT_LOCALFLOCKS)
1575 seq_printf(s, ",localflocks,");
1576
b61817e1
JB		 1577 if (osb->osb_cluster_stack[0])
1578 seq_printf(s, ",cluster_stack=%.*s", OCFS2_STACK_LABEL_LEN,
1579 osb->osb_cluster_stack);
19ece546
JK		 1580 if (opts & OCFS2_MOUNT_USRQUOTA)
1581 seq_printf(s, ",usrquota");
1582 if (opts & OCFS2_MOUNT_GRPQUOTA)
1583 seq_printf(s, ",grpquota");
b61817e1 1584
7bdb0d18
TY		 1585 if (opts & OCFS2_MOUNT_COHERENCY_BUFFERED)
1586 seq_printf(s, ",coherency=buffered");
1587 else
1588 seq_printf(s, ",coherency=full");
1589
b0f73cfc
SM		 1590 if (opts & OCFS2_MOUNT_NOUSERXATTR)
1591 seq_printf(s, ",nouser_xattr");
1592 else
1593 seq_printf(s, ",user_xattr");
1594
12462f1d
JB		 1595 if (opts & OCFS2_MOUNT_INODE64)
1596 seq_printf(s, ",inode64");
1597
a68979b8
TY		 1598 if (opts & OCFS2_MOUNT_POSIX_ACL)
1599 seq_printf(s, ",acl");
1600 else
1601 seq_printf(s, ",noacl");
a68979b8 1602
d02f00cc
MF		 1603 if (osb->osb_resv_level != OCFS2_DEFAULT_RESV_LEVEL)
1604 seq_printf(s, ",resv_level=%d", osb->osb_resv_level);
1605
83f92318
MF		 1606 if (osb->osb_dir_resv_level != osb->osb_resv_level)
1607 seq_printf(s, ",dir_resv_level=%d", osb->osb_resv_level);
1608
d550071c
SM		 1609 return 0;
1610}
1611
ccd979bd
MF		 1612static int __init ocfs2_init(void)
1613{
c18ceab0 1614 int status;
a11f7e63 1615
ccd979bd 1616 status = init_ocfs2_uptodate_cache();
342827d7
AV		 1617 if (status < 0)
1618 goto out1;
ccd979bd
MF		 1619
1620 status = ocfs2_initialize_mem_caches();
342827d7
AV		 1621 if (status < 0)
1622 goto out2;
ccd979bd
MF		 1623
1624 ocfs2_wq = create_singlethread_workqueue("ocfs2_wq");
1625 if (!ocfs2_wq) {
1626 status = -ENOMEM;
342827d7 1627 goto out3;
ccd979bd
MF		 1628 }
1629
ccd979bd
MF		 1630 ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL);
1631 if (!ocfs2_debugfs_root) {
dc171580 1632 status = -ENOMEM;
ccd979bd 1633 mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n");
dc171580 1634 goto out4;
ccd979bd
MF		 1635 }
1636
63e0c48a
JB		 1637 ocfs2_set_locking_protocol();
1638
9e33d69f 1639 status = register_quota_format(&ocfs2_quota_format);
342827d7
AV		 1640 if (status < 0)
1641 goto out4;
1642 status = register_filesystem(&ocfs2_fs_type);
1643 if (!status)
1644 return 0;
ccd979bd 1645
342827d7
AV		 1646 unregister_quota_format(&ocfs2_quota_format);
1647out4:
1648 destroy_workqueue(ocfs2_wq);
1649 debugfs_remove(ocfs2_debugfs_root);
1650out3:
1651 ocfs2_free_mem_caches();
1652out2:
1653 exit_ocfs2_uptodate_cache();
1654out1:
1655 mlog_errno(status);
1656 return status;
ccd979bd
MF		 1657}
1658
1659static void __exit ocfs2_exit(void)
1660{
ccd979bd
MF		 1661 if (ocfs2_wq) {
1662 flush_workqueue(ocfs2_wq);
1663 destroy_workqueue(ocfs2_wq);
1664 }
1665
9e33d69f
JK		 1666 unregister_quota_format(&ocfs2_quota_format);
1667
ccd979bd
MF		 1668 debugfs_remove(ocfs2_debugfs_root);
1669
1670 ocfs2_free_mem_caches();
1671
1672 unregister_filesystem(&ocfs2_fs_type);
1673
ccd979bd 1674 exit_ocfs2_uptodate_cache();
ccd979bd
MF		 1675}
1676
1677static void ocfs2_put_super(struct super_block *sb)
1678{
32a42d39 1679 trace_ocfs2_put_super(sb);
ccd979bd
MF		 1680
1681 ocfs2_sync_blockdev(sb);
1682 ocfs2_dismount_volume(sb, 0);
ccd979bd
MF		 1683}
1684
726c3342 1685static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf)
ccd979bd
MF		 1686{
1687 struct ocfs2_super *osb;
1688 u32 numbits, freebits;
1689 int status;
1690 struct ocfs2_dinode *bm_lock;
1691 struct buffer_head *bh = NULL;
1692 struct inode *inode = NULL;
1693
32a42d39 1694 trace_ocfs2_statfs(dentry->d_sb, buf);
ccd979bd 1695
726c3342 1696 osb = OCFS2_SB(dentry->d_sb);
ccd979bd
MF		 1697
1698 inode = ocfs2_get_system_file_inode(osb,
1699 GLOBAL_BITMAP_SYSTEM_INODE,
1700 OCFS2_INVALID_SLOT);
1701 if (!inode) {
1702 mlog(ML_ERROR, "failed to get bitmap inode\n");
1703 status = -EIO;
1704 goto bail;
1705 }
1706
e63aecb6 1707 status = ocfs2_inode_lock(inode, &bh, 0);
ccd979bd
MF		 1708 if (status < 0) {
1709 mlog_errno(status);
1710 goto bail;
1711 }
1712
1713 bm_lock = (struct ocfs2_dinode *) bh->b_data;
1714
1715 numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total);
1716 freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used);
1717
1718 buf->f_type = OCFS2_SUPER_MAGIC;
726c3342 1719 buf->f_bsize = dentry->d_sb->s_blocksize;
ccd979bd
MF		 1720 buf->f_namelen = OCFS2_MAX_FILENAME_LEN;
1721 buf->f_blocks = ((sector_t) numbits) *
1722 (osb->s_clustersize >> osb->sb->s_blocksize_bits);
1723 buf->f_bfree = ((sector_t) freebits) *
1724 (osb->s_clustersize >> osb->sb->s_blocksize_bits);
1725 buf->f_bavail = buf->f_bfree;
1726 buf->f_files = numbits;
1727 buf->f_ffree = freebits;
837711f8
CL		 1728 buf->f_fsid.val[0] = crc32_le(0, osb->uuid_str, OCFS2_VOL_UUID_LEN)
1729 & 0xFFFFFFFFUL;
1730 buf->f_fsid.val[1] = crc32_le(0, osb->uuid_str + OCFS2_VOL_UUID_LEN,
1731 OCFS2_VOL_UUID_LEN) & 0xFFFFFFFFUL;
ccd979bd
MF		 1732
1733 brelse(bh);
1734
e63aecb6 1735 ocfs2_inode_unlock(inode, 0);
ccd979bd
MF		 1736 status = 0;
1737bail:
1738 if (inode)
1739 iput(inode);
1740
c1e8d35e
TM		 1741 if (status)
1742 mlog_errno(status);
ccd979bd
MF		 1743
1744 return status;
1745}
1746
51cc5068 1747static void ocfs2_inode_init_once(void *data)
ccd979bd
MF		 1748{
1749 struct ocfs2_inode_info *oi = data;
1750
a35afb83
CL		 1751 oi->ip_flags = 0;
1752 oi->ip_open_count = 0;
1753 spin_lock_init(&oi->ip_lock);
1754 ocfs2_extent_map_init(&oi->vfs_inode);
1755 INIT_LIST_HEAD(&oi->ip_io_markers);
a35afb83 1756 oi->ip_dir_start_lookup = 0;
c18ceab0 1757 mutex_init(&oi->ip_unaligned_aio);
a35afb83 1758 init_rwsem(&oi->ip_alloc_sem);
cf1d6c76 1759 init_rwsem(&oi->ip_xattr_sem);
a35afb83 1760 mutex_init(&oi->ip_io_mutex);
ccd979bd 1761
a35afb83
CL		 1762 oi->ip_blkno = 0ULL;
1763 oi->ip_clusters = 0;
ccd979bd 1764
4fe370af
MF		 1765 ocfs2_resv_init_once(&oi->ip_la_data_resv);
1766
a35afb83 1767 ocfs2_lock_res_init_once(&oi->ip_rw_lockres);
e63aecb6 1768 ocfs2_lock_res_init_once(&oi->ip_inode_lockres);
a35afb83 1769 ocfs2_lock_res_init_once(&oi->ip_open_lockres);
ccd979bd 1770
8cb471e8 1771 ocfs2_metadata_cache_init(INODE_CACHE(&oi->vfs_inode),
6e5a3d75 1772 &ocfs2_inode_caching_ops);
ccd979bd 1773
a35afb83 1774 inode_init_once(&oi->vfs_inode);
ccd979bd
MF		 1775}
1776
1777static int ocfs2_initialize_mem_caches(void)
1778{
1779 ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache",
fffb60f9
PJ		 1780 sizeof(struct ocfs2_inode_info),
1781 0,
1782 (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
1783 SLAB_MEM_SPREAD),
20c2df83 1784 ocfs2_inode_init_once);
9e33d69f
JK		 1785 ocfs2_dquot_cachep = kmem_cache_create("ocfs2_dquot_cache",
1786 sizeof(struct ocfs2_dquot),
1787 0,
1788 (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
1789 SLAB_MEM_SPREAD),
1790 NULL);
1791 ocfs2_qf_chunk_cachep = kmem_cache_create("ocfs2_qf_chunk_cache",
1792 sizeof(struct ocfs2_quota_chunk),
1793 0,
1794 (SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD),
1795 NULL);
1796 if (!ocfs2_inode_cachep || !ocfs2_dquot_cachep ||
1797 !ocfs2_qf_chunk_cachep) {
1798 if (ocfs2_inode_cachep)
1799 kmem_cache_destroy(ocfs2_inode_cachep);
1800 if (ocfs2_dquot_cachep)
1801 kmem_cache_destroy(ocfs2_dquot_cachep);
1802 if (ocfs2_qf_chunk_cachep)
1803 kmem_cache_destroy(ocfs2_qf_chunk_cachep);
ccd979bd 1804 return -ENOMEM;
9e33d69f 1805 }
ccd979bd 1806
ccd979bd
MF		 1807 return 0;
1808}
1809
1810static void ocfs2_free_mem_caches(void)
1811{
8c0a8537
KS		 1812 /*
1813 * Make sure all delayed rcu free inodes are flushed before we
1814 * destroy cache.
1815 */
1816 rcu_barrier();
ccd979bd
MF		 1817 if (ocfs2_inode_cachep)
1818 kmem_cache_destroy(ocfs2_inode_cachep);
ccd979bd 1819 ocfs2_inode_cachep = NULL;
9e33d69f
JK		 1820
1821 if (ocfs2_dquot_cachep)
1822 kmem_cache_destroy(ocfs2_dquot_cachep);
1823 ocfs2_dquot_cachep = NULL;
1824
1825 if (ocfs2_qf_chunk_cachep)
1826 kmem_cache_destroy(ocfs2_qf_chunk_cachep);
1827 ocfs2_qf_chunk_cachep = NULL;
ccd979bd
MF		 1828}
1829
1830static int ocfs2_get_sector(struct super_block *sb,
1831 struct buffer_head **bh,
1832 int block,
1833 int sect_size)
1834{
1835 if (!sb_set_blocksize(sb, sect_size)) {
1836 mlog(ML_ERROR, "unable to set blocksize\n");
1837 return -EIO;
1838 }
1839
1840 *bh = sb_getblk(sb, block);
1841 if (!*bh) {
7391a294
RX		 1842 mlog_errno(-ENOMEM);
1843 return -ENOMEM;
ccd979bd
MF		 1844 }
1845 lock_buffer(*bh);
1846 if (!buffer_dirty(*bh))
1847 clear_buffer_uptodate(*bh);
1848 unlock_buffer(*bh);
1849 ll_rw_block(READ, 1, bh);
1850 wait_on_buffer(*bh);
28d57d43 1851 if (!buffer_uptodate(*bh)) {
1852 mlog_errno(-EIO);
1853 brelse(*bh);
1854 *bh = NULL;
1855 return -EIO;
1856 }
1857
ccd979bd
MF		 1858 return 0;
1859}
1860
ccd979bd
MF		 1861static int ocfs2_mount_volume(struct super_block *sb)
1862{
1863 int status = 0;
1864 int unlock_super = 0;
1865 struct ocfs2_super *osb = OCFS2_SB(sb);
1866
ccd979bd
MF		 1867 if (ocfs2_is_hard_readonly(osb))
1868 goto leave;
1869
ccd979bd
MF		 1870 status = ocfs2_dlm_init(osb);
1871 if (status < 0) {
1872 mlog_errno(status);
1873 goto leave;
1874 }
1875
ccd979bd
MF		 1876 status = ocfs2_super_lock(osb, 1);
1877 if (status < 0) {
1878 mlog_errno(status);
1879 goto leave;
1880 }
1881 unlock_super = 1;
1882
1883 /* This will load up the node map and add ourselves to it. */
1884 status = ocfs2_find_slot(osb);
1885 if (status < 0) {
1886 mlog_errno(status);
1887 goto leave;
1888 }
1889
ccd979bd
MF		 1890 /* load all node-local system inodes */
1891 status = ocfs2_init_local_system_inodes(osb);
1892 if (status < 0) {
1893 mlog_errno(status);
1894 goto leave;
1895 }
1896
1897 status = ocfs2_check_volume(osb);
1898 if (status < 0) {
1899 mlog_errno(status);
1900 goto leave;
1901 }
1902
1903 status = ocfs2_truncate_log_init(osb);
06c59bb8 1904 if (status < 0)
ccd979bd 1905 mlog_errno(status);
c271c5c2 1906
ccd979bd
MF		 1907leave:
1908 if (unlock_super)
1909 ocfs2_super_unlock(osb, 1);
1910
ccd979bd
MF		 1911 return status;
1912}
1913
ccd979bd
MF		 1914static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err)
1915{
286eaa95 1916 int tmp, hangup_needed = 0;
ccd979bd 1917 struct ocfs2_super *osb = NULL;
99d7a882 1918 char nodestr[12];
ccd979bd 1919
32a42d39 1920 trace_ocfs2_dismount_volume(sb);
ccd979bd
MF		 1921
1922 BUG_ON(!sb);
1923 osb = OCFS2_SB(sb);
1924 BUG_ON(!osb);
1925
50397507
SM		 1926 debugfs_remove(osb->osb_ctxt);
1927
692684e1
SM		 1928 /* Orphan scan should be stopped as early as possible */
1929 ocfs2_orphan_scan_stop(osb);
1930
19ece546
JK		 1931 ocfs2_disable_quotas(osb);
1932
e3a767b6
JK		 1933 /* All dquots should be freed by now */
1934 WARN_ON(!llist_empty(&osb->dquot_drop_list));
1935 /* Wait for worker to be done with the work structure in osb */
1936 cancel_work_sync(&osb->dquot_drop_work);
1937
ccd979bd
MF		 1938 ocfs2_shutdown_local_alloc(osb);
1939
b253bfd8
X		 1940 ocfs2_truncate_log_shutdown(osb);
1941
553abd04
JB		 1942 /* This will disable recovery and flush any recovery work. */
1943 ocfs2_recovery_exit(osb);
ccd979bd
MF		 1944
1945 ocfs2_journal_shutdown(osb);
1946
1947 ocfs2_sync_blockdev(sb);
1948
374a263e
TM		 1949 ocfs2_purge_refcount_trees(osb);
1950
4670c46d
JB		 1951 /* No cluster connection means we've failed during mount, so skip
1952 * all the steps which depended on that to complete. */
1953 if (osb->cconn) {
ccd979bd
MF		 1954 tmp = ocfs2_super_lock(osb, 1);
1955 if (tmp < 0) {
1956 mlog_errno(tmp);
1957 return;
1958 }
19b613d4 1959 }
ccd979bd 1960
19b613d4
MF		 1961 if (osb->slot_num != OCFS2_INVALID_SLOT)
1962 ocfs2_put_slot(osb);
ccd979bd 1963
4670c46d 1964 if (osb->cconn)
ccd979bd 1965 ocfs2_super_unlock(osb, 1);
ccd979bd
MF		 1966
1967 ocfs2_release_system_inodes(osb);
1968
6953b4c0 1969 /*
6953b4c0
JB		 1970 * If we're dismounting due to mount error, mount.ocfs2 will clean
1971 * up heartbeat. If we're a local mount, there is no heartbeat.
1972 * If we failed before we got a uuid_str yet, we can't stop
1973 * heartbeat. Otherwise, do it.
1974 */
03efed8a
TY		 1975 if (!mnt_err && !ocfs2_mount_local(osb) && osb->uuid_str &&
1976 !ocfs2_is_hard_readonly(osb))
286eaa95
JB		 1977 hangup_needed = 1;
1978
1979 if (osb->cconn)
1980 ocfs2_dlm_shutdown(osb, hangup_needed);
1981
73be192b 1982 ocfs2_blockcheck_stats_debugfs_remove(&osb->osb_ecc_stats);
286eaa95
JB		 1983 debugfs_remove(osb->osb_debug_root);
1984
1985 if (hangup_needed)
6953b4c0 1986 ocfs2_cluster_hangup(osb->uuid_str, strlen(osb->uuid_str));
ccd979bd
MF		 1987
1988 atomic_set(&osb->vol_state, VOLUME_DISMOUNTED);
1989
c271c5c2
SM		 1990 if (ocfs2_mount_local(osb))
1991 snprintf(nodestr, sizeof(nodestr), "local");
1992 else
19fdb624 1993 snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num);
c271c5c2
SM		 1994
1995 printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %s)\n",
1996 osb->dev_str, nodestr);
ccd979bd
MF		 1997
1998 ocfs2_delete_osb(osb);
1999 kfree(osb);
2000 sb->s_dev = 0;
2001 sb->s_fs_info = NULL;
2002}
2003
2004static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid,
2005 unsigned uuid_bytes)
2006{
2007 int i, ret;
2008 char *ptr;
2009
2010 BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN);
2011
cd861280 2012 osb->uuid_str = kzalloc(OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL);
ccd979bd
MF		 2013 if (osb->uuid_str == NULL)
2014 return -ENOMEM;
2015
ccd979bd
MF		 2016 for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) {
2017 /* print with null */
2018 ret = snprintf(ptr, 3, "%02X", uuid[i]);
2019 if (ret != 2) /* drop super cleans up */
2020 return -EINVAL;
2021 /* then only advance past the last char */
2022 ptr += 2;
2023 }
2024
2025 return 0;
2026}
2027
3bdb8efd
PL		 2028/* Make sure entire volume is addressable by our journal. Requires
2029 osb_clusters_at_boot to be valid and for the journal to have been
2030 initialized by ocfs2_journal_init(). */
2031static int ocfs2_journal_addressable(struct ocfs2_super *osb)
2032{
2033 int status = 0;
2034 u64 max_block =
2035 ocfs2_clusters_to_blocks(osb->sb,
2036 osb->osb_clusters_at_boot) - 1;
2037
2038 /* 32-bit block number is always OK. */
2039 if (max_block <= (u32)~0ULL)
2040 goto out;
2041
2042 /* Volume is "huge", so see if our journal is new enough to
2043 support it. */
2044 if (!(OCFS2_HAS_COMPAT_FEATURE(osb->sb,
2045 OCFS2_FEATURE_COMPAT_JBD2_SB) &&
2046 jbd2_journal_check_used_features(osb->journal->j_journal, 0, 0,
2047 JBD2_FEATURE_INCOMPAT_64BIT))) {
2048 mlog(ML_ERROR, "The journal cannot address the entire volume. "
2049 "Enable the 'block64' journal option with tunefs.ocfs2");
2050 status = -EFBIG;
2051 goto out;
2052 }
2053
2054 out:
2055 return status;
2056}
2057
ccd979bd
MF		 2058static int ocfs2_initialize_super(struct super_block *sb,
2059 struct buffer_head *bh,
73be192b
JB		 2060 int sector_size,
2061 struct ocfs2_blockcheck_stats *stats)
ccd979bd 2062{
bddb8eb3 2063 int status;
5a254031
MF		 2064 int i, cbits, bbits;
2065 struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data;
ccd979bd 2066 struct inode *inode = NULL;
ccd979bd 2067 struct ocfs2_journal *journal;
ccd979bd 2068 struct ocfs2_super *osb;
3bdb8efd 2069 u64 total_blocks;
ccd979bd 2070
cd861280 2071 osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL);
ccd979bd
MF		 2072 if (!osb) {
2073 status = -ENOMEM;
2074 mlog_errno(status);
2075 goto bail;
2076 }
2077
2078 sb->s_fs_info = osb;
2079 sb->s_op = &ocfs2_sops;
ba87167c 2080 sb->s_d_op = &ocfs2_dentry_ops;
ccd979bd 2081 sb->s_export_op = &ocfs2_export_ops;
19ece546
JK		 2082 sb->s_qcop = &ocfs2_quotactl_ops;
2083 sb->dq_op = &ocfs2_quota_operations;
1c92ec67 2084 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
cf1d6c76 2085 sb->s_xattr = ocfs2_xattr_handlers;
e0dceaf0 2086 sb->s_time_gran = 1;
ccd979bd
MF		 2087 sb->s_flags |= MS_NOATIME;
2088 /* this is needed to support O_LARGEFILE */
5a254031
MF		 2089 cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits);
2090 bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits);
2091 sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits);
ccd979bd 2092
9b7895ef
MF		 2093 osb->osb_dx_mask = (1 << (cbits - bbits)) - 1;
2094
2095 for (i = 0; i < 3; i++)
2096 osb->osb_dx_seed[i] = le32_to_cpu(di->id2.i_super.s_dx_seed[i]);
2097 osb->osb_dx_seed[3] = le32_to_cpu(di->id2.i_super.s_uuid_hash);
2098
ccd979bd
MF		 2099 osb->sb = sb;
2100 /* Save off for ocfs2_rw_direct */
2101 osb->s_sectsize_bits = blksize_bits(sector_size);
ebdec83b 2102 BUG_ON(!osb->s_sectsize_bits);
ccd979bd 2103
34d024f8
MF		 2104 spin_lock_init(&osb->dc_task_lock);
2105 init_waitqueue_head(&osb->dc_event);
2106 osb->dc_work_sequence = 0;
2107 osb->dc_wake_sequence = 0;
ccd979bd
MF		 2108 INIT_LIST_HEAD(&osb->blocked_lock_list);
2109 osb->blocked_lock_count = 0;
ccd979bd 2110 spin_lock_init(&osb->osb_lock);
c8b9cf9a 2111 spin_lock_init(&osb->osb_xattr_lock);
b89c5428 2112 ocfs2_init_steal_slots(osb);
ccd979bd 2113
43b10a20 2114 mutex_init(&osb->system_file_mutex);
2115
ccd979bd
MF		 2116 atomic_set(&osb->alloc_stats.moves, 0);
2117 atomic_set(&osb->alloc_stats.local_data, 0);
2118 atomic_set(&osb->alloc_stats.bitmap_data, 0);
2119 atomic_set(&osb->alloc_stats.bg_allocs, 0);
2120 atomic_set(&osb->alloc_stats.bg_extends, 0);
2121
73be192b
JB		 2122 /* Copy the blockcheck stats from the superblock probe */
2123 osb->osb_ecc_stats = *stats;
2124
ccd979bd
MF		 2125 ocfs2_init_node_maps(osb);
2126
2127 snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u",
2128 MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev));
2129
75d9bbc7
GR		 2130 osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots);
2131 if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) {
2132 mlog(ML_ERROR, "Invalid number of node slots (%u)\n",
2133 osb->max_slots);
2134 status = -EINVAL;
2135 goto bail;
2136 }
75d9bbc7 2137
8b712cd5
JM		 2138 ocfs2_orphan_scan_init(osb);
2139
553abd04
JB		 2140 status = ocfs2_recovery_init(osb);
2141 if (status) {
2142 mlog(ML_ERROR, "Unable to initialize recovery state\n");
2143 mlog_errno(status);
2144 goto bail;
2145 }
ccd979bd
MF		 2146
2147 init_waitqueue_head(&osb->checkpoint_event);
ccd979bd 2148
7f1a37e3
TY		 2149 osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
2150
ccd979bd
MF		 2151 osb->slot_num = OCFS2_INVALID_SLOT;
2152
8154da3d
TY		 2153 osb->s_xattr_inline_size = le16_to_cpu(
2154 di->id2.i_super.s_xattr_inline_size);
fdd77704 2155
ccd979bd
MF		 2156 osb->local_alloc_state = OCFS2_LA_UNUSED;
2157 osb->local_alloc_bh = NULL;
9c7af40b 2158 INIT_DELAYED_WORK(&osb->la_enable_wq, ocfs2_la_enable_worker);
ccd979bd 2159
ccd979bd
MF		 2160 init_waitqueue_head(&osb->osb_mount_event);
2161
d02f00cc
MF		 2162 status = ocfs2_resmap_init(osb, &osb->osb_la_resmap);
2163 if (status) {
2164 mlog_errno(status);
2165 goto bail;
2166 }
2167
ccd979bd
MF		 2168 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
539d8264
SM		 2175 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
b4df6ed8
MF		 2184 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
374a263e
TM		 2194 osb->osb_rf_lock_tree = RB_ROOT;
2195
ccd979bd
MF		 2196 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
98f486f2
SM		 2217 if (ocfs2_clusterinfo_valid(osb)) {
2218 osb->osb_stackflags =
2219 OCFS2_RAW_SB(di)->s_cluster_info.ci_stackflags;
c74a3bdd 2220 strlcpy(osb->osb_cluster_stack,
b61817e1 2221 OCFS2_RAW_SB(di)->s_cluster_info.ci_stack,
c74a3bdd 2222 OCFS2_STACK_LABEL_LEN + 1);
b61817e1
JB		 2223 if (strlen(osb->osb_cluster_stack) != OCFS2_STACK_LABEL_LEN) {
2224 mlog(ML_ERROR,
2225 "couldn't mount because of an invalid "
2226 "cluster stack label (%s) \n",
2227 osb->osb_cluster_stack);
2228 status = -EINVAL;
2229 goto bail;
2230 }
c74a3bdd
GR		 2231 strlcpy(osb->osb_cluster_name,
2232 OCFS2_RAW_SB(di)->s_cluster_info.ci_cluster,
2233 OCFS2_CLUSTER_NAME_LEN + 1);
b61817e1
JB		 2234 } else {
2235 /* The empty string is identical with classic tools that
2236 * don't know about s_cluster_info. */
2237 osb->osb_cluster_stack[0] = '\0';
2238 }
2239
ccd979bd
MF		 2240 get_random_bytes(&osb->s_next_generation, sizeof(u32));
2241
2242 /* FIXME
2243 * This should be done in ocfs2_journal_init(), but unknown
2244 * ordering issues will cause the filesystem to crash.
2245 * If anyone wants to figure out what part of the code
2246 * refers to osb->journal before ocfs2_journal_init() is run,
2247 * be my guest.
2248 */
2249 /* initialize our journal structure */
2250
cd861280 2251 journal = kzalloc(sizeof(struct ocfs2_journal), GFP_KERNEL);
ccd979bd
MF		 2252 if (!journal) {
2253 mlog(ML_ERROR, "unable to alloc journal\n");
2254 status = -ENOMEM;
2255 goto bail;
2256 }
2257 osb->journal = journal;
2258 journal->j_osb = osb;
2259
2260 atomic_set(&journal->j_num_trans, 0);
2261 init_rwsem(&journal->j_trans_barrier);
2262 init_waitqueue_head(&journal->j_checkpointed);
2263 spin_lock_init(&journal->j_lock);
2264 journal->j_trans_id = (unsigned long) 1;
2265 INIT_LIST_HEAD(&journal->j_la_cleanups);
c4028958 2266 INIT_WORK(&journal->j_recovery_work, ocfs2_complete_recovery);
ccd979bd
MF		 2267 journal->j_state = OCFS2_JOURNAL_FREE;
2268
e3a767b6
JK		 2269 INIT_WORK(&osb->dquot_drop_work, ocfs2_drop_dquot_refs);
2270 init_llist_head(&osb->dquot_drop_list);
2271
ccd979bd
MF		 2272 /* get some pseudo constants for clustersize bits */
2273 osb->s_clustersize_bits =
2274 le32_to_cpu(di->id2.i_super.s_clustersize_bits);
2275 osb->s_clustersize = 1 << osb->s_clustersize_bits;
ccd979bd
MF		 2276
2277 if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE ||
2278 osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) {
2279 mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n",
2280 osb->s_clustersize);
2281 status = -EINVAL;
2282 goto bail;
2283 }
2284
3bdb8efd
PL		 2285 total_blocks = ocfs2_clusters_to_blocks(osb->sb,
2286 le32_to_cpu(di->i_clusters));
2287
2288 status = generic_check_addressable(osb->sb->s_blocksize_bits,
2289 total_blocks);
2290 if (status) {
2291 mlog(ML_ERROR, "Volume too large "
2292 "to mount safely on this system");
2293 status = -EFBIG;
ccd979bd
MF		 2294 goto bail;
2295 }
2296
2297 if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid,
2298 sizeof(di->id2.i_super.s_uuid))) {
2299 mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n");
2300 status = -ENOMEM;
2301 goto bail;
2302 }
2303
69201bb1
FF		 2304 strlcpy(osb->vol_label, di->id2.i_super.s_label,
2305 OCFS2_MAX_VOL_LABEL_LEN);
ccd979bd
MF		 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);
cf1d6c76 2311 osb->uuid_hash = le32_to_cpu(di->id2.i_super.s_uuid_hash);
32a42d39
TM		 2312 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);
ccd979bd
MF		 2316
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;
6b82021b 2345 osb->osb_clusters_at_boot = OCFS2_I(inode)->ip_clusters;
ccd979bd 2346 iput(inode);
ccd979bd 2347
8571882c
TM		 2348 osb->bitmap_cpg = ocfs2_group_bitmap_size(sb, 0,
2349 osb->s_feature_incompat) * 8;
ccd979bd
MF		 2350
2351 status = ocfs2_init_slot_info(osb);
2352 if (status < 0) {
2353 mlog_errno(status);
2354 goto bail;
2355 }
e41d33af 2356 cleancache_init_shared_fs((char *)&di->id2.i_super.s_uuid, sb);
ccd979bd 2357
ccd979bd 2358bail:
ccd979bd
MF		 2359 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,
73be192b
JB		 2369 u32 blksz,
2370 struct ocfs2_blockcheck_stats *stats)
ccd979bd
MF		 2371{
2372 int status = -EAGAIN;
2373
ccd979bd
MF		 2374 if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE,
2375 strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) {
d030cc97
JB		 2376 /* 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,
73be192b
JB		 2381 &di->i_check,
2382 stats);
d030cc97
JB		 2383 if (status)
2384 goto out;
2385 }
ccd979bd
MF		 2386 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: "
b0697053 2404 "found %llu, should be %llu\n",
1ca1a111 2405 (unsigned long long)le64_to_cpu(di->i_blkno),
b0697053 2406 (unsigned long long)bh->b_blocknr);
ccd979bd
MF		 2407 } 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
d030cc97 2427out:
c1e8d35e
TM		 2428 if (status && status != -EAGAIN)
2429 mlog_errno(status);
ccd979bd
MF		 2430 return status;
2431}
2432
2433static int ocfs2_check_volume(struct ocfs2_super *osb)
2434{
bddb8eb3 2435 int status;
ccd979bd 2436 int dirty;
c271c5c2 2437 int local;
ccd979bd
MF		 2438 struct ocfs2_dinode *local_alloc = NULL; /* only used if we
2439 * recover
2440 * ourselves. */
2441
ccd979bd
MF		 2442 /* 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
3bdb8efd
PL		 2449 /* 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
ccd979bd
MF		 2455 /* 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 {
619c200d
SM		 2465 printk(KERN_NOTICE "ocfs2: File system on device (%s) was not "
2466 "unmounted cleanly, recovering it.\n", osb->dev_str);
ccd979bd
MF		 2467 }
2468
c271c5c2
SM		 2469 local = ocfs2_mount_local(osb);
2470
ccd979bd 2471 /* will play back anything left in the journal. */
539d8264 2472 status = ocfs2_journal_load(osb->journal, local, dirty);
01af4820
WW		 2473 if (status < 0) {
2474 mlog(ML_ERROR, "ocfs2 journal load failed! %d\n", status);
2475 goto finally;
2476 }
ccd979bd
MF		 2477
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
ccd979bd
MF		 2491 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);
9140db04
SE		 2509 if (status < 0) {
2510 mlog_errno(status);
2511 goto finally;
2512 }
2513
2514 status = ocfs2_compute_replay_slots(osb);
ccd979bd
MF		 2515 if (status < 0)
2516 mlog_errno(status);
2517
2518finally:
d787ab09 2519 kfree(local_alloc);
ccd979bd 2520
c1e8d35e
TM		 2521 if (status)
2522 mlog_errno(status);
ccd979bd
MF		 2523 return status;
2524}
2525
2526/*
2527 * The routine gets called from dismount or close whenever a dismount on
2528 * volume is requested and the osb open count becomes 1.
2529 * It will remove the osb from the global list and also free up all the
2530 * initialized resources and fileobject.
2531 */
2532static void ocfs2_delete_osb(struct ocfs2_super *osb)
2533{
ccd979bd
MF		 2534 /* This function assumes that the caller has the main osb resource */
2535
8e8a4603 2536 ocfs2_free_slot_info(osb);
ccd979bd 2537
b4df6ed8 2538 kfree(osb->osb_orphan_wipes);
539d8264 2539 kfree(osb->slot_recovery_generations);
ccd979bd
MF		 2540 /* FIXME
2541 * This belongs in journal shutdown, but because we have to
421f91d2 2542 * allocate osb->journal at the start of ocfs2_initialize_osb(),
ccd979bd
MF		 2543 * we free it here.
2544 */
2545 kfree(osb->journal);
d787ab09 2546 kfree(osb->local_alloc_copy);
ccd979bd 2547 kfree(osb->uuid_str);
f13a568e 2548 kfree(osb->vol_label);
ccd979bd
MF		 2549 ocfs2_put_dlm_debug(osb->osb_dlm_debug);
2550 memset(osb, 0, sizeof(struct ocfs2_super));
ccd979bd
MF		 2551}
2552
2553/* Put OCFS2 into a readonly state, or (if the user specifies it),
2554 * panic(). We do not support continue-on-error operation. */
2555static void ocfs2_handle_error(struct super_block *sb)
2556{
2557 struct ocfs2_super *osb = OCFS2_SB(sb);
2558
2559 if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_PANIC)
2560 panic("OCFS2: (device %s): panic forced after error\n",
2561 sb->s_id);
2562
2563 ocfs2_set_osb_flag(osb, OCFS2_OSB_ERROR_FS);
2564
2565 if (sb->s_flags & MS_RDONLY &&
2566 (ocfs2_is_soft_readonly(osb) ||
2567 ocfs2_is_hard_readonly(osb)))
2568 return;
2569
2570 printk(KERN_CRIT "File system is now read-only due to the potential "
2571 "of on-disk corruption. Please run fsck.ocfs2 once the file "
2572 "system is unmounted.\n");
2573 sb->s_flags |= MS_RDONLY;
2574 ocfs2_set_ro_flag(osb, 0);
2575}
2576
2577static char error_buf[1024];
2578
2579void __ocfs2_error(struct super_block *sb,
2580 const char *function,
2581 const char *fmt, ...)
2582{
2583 va_list args;
2584
2585 va_start(args, fmt);
4a6e617a 2586 vsnprintf(error_buf, sizeof(error_buf), fmt, args);
ccd979bd
MF		 2587 va_end(args);
2588
2589 /* Not using mlog here because we want to show the actual
2590 * function the error came from. */
2591 printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %s\n",
2592 sb->s_id, function, error_buf);
2593
2594 ocfs2_handle_error(sb);
2595}
2596
2597/* Handle critical errors. This is intentionally more drastic than
2598 * ocfs2_handle_error, so we only use for things like journal errors,
2599 * etc. */
2600void __ocfs2_abort(struct super_block* sb,
2601 const char *function,
2602 const char *fmt, ...)
2603{
2604 va_list args;
2605
2606 va_start(args, fmt);
4a6e617a 2607 vsnprintf(error_buf, sizeof(error_buf), fmt, args);
ccd979bd
MF		 2608 va_end(args);
2609
2610 printk(KERN_CRIT "OCFS2: abort (device %s): %s: %s\n",
2611 sb->s_id, function, error_buf);
2612
2613 /* We don't have the cluster support yet to go straight to
2614 * hard readonly in here. Until then, we want to keep
2615 * ocfs2_abort() so that we can at least mark critical
2616 * errors.
2617 *
2618 * TODO: This should abort the journal and alert other nodes
2619 * that our slot needs recovery. */
2620
2621 /* Force a panic(). This stinks, but it's better than letting
2622 * things continue without having a proper hard readonly
2623 * here. */
a2f2ddbf
SM		 2624 if (!ocfs2_mount_local(OCFS2_SB(sb)))
2625 OCFS2_SB(sb)->s_mount_opt |= OCFS2_MOUNT_ERRORS_PANIC;
ccd979bd
MF		 2626 ocfs2_handle_error(sb);
2627}
2628
e4b963f1
JB		 2629/*
2630 * Void signal blockers, because in-kernel sigprocmask() only fails
2631 * when SIG_* is wrong.
2632 */
2633void ocfs2_block_signals(sigset_t *oldset)
2634{
2635 int rc;
2636 sigset_t blocked;
2637
2638 sigfillset(&blocked);
2639 rc = sigprocmask(SIG_BLOCK, &blocked, oldset);
2640 BUG_ON(rc);
2641}
2642
2643void ocfs2_unblock_signals(sigset_t *oldset)
2644{
2645 int rc = sigprocmask(SIG_SETMASK, oldset, NULL);
2646 BUG_ON(rc);
2647}
2648
ccd979bd
MF		 2649module_init(ocfs2_init);
2650module_exit(ocfs2_exit);
Linux 6.x block layer and io_uring tree(s)