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Merge tag 'pci-v6.16-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
[linux-2.6-block.git] / fs / ocfs2 / super.c
CommitLineData
328970de 1// SPDX-License-Identifier: GPL-2.0-or-later
fa60ce2c 2/*
ccd979bd
MF		 3 * super.c
4 *
5 * load/unload driver, mount/dismount volumes
6 *
7 * Copyright (C) 2002, 2004 Oracle. All rights reserved.
ccd979bd
MF		 8 */
9
10#include <linux/module.h>
11#include <linux/fs.h>
12#include <linux/types.h>
13#include <linux/slab.h>
14#include <linux/highmem.h>
ccd979bd
MF		 15#include <linux/init.h>
16#include <linux/random.h>
17#include <linux/statfs.h>
18#include <linux/moduleparam.h>
19#include <linux/blkdev.h>
20#include <linux/socket.h>
21#include <linux/inet.h>
9be53fe6
ES		 22#include <linux/fs_parser.h>
23#include <linux/fs_context.h>
ccd979bd
MF		 24#include <linux/crc32.h>
25#include <linux/debugfs.h>
6953b4c0 26#include <linux/seq_file.h>
19ece546 27#include <linux/quotaops.h>
f361bf4a 28#include <linux/signal.h>
ccd979bd 29
80a9a84d
WW		 30#define CREATE_TRACE_POINTS
31#include "ocfs2_trace.h"
32
ccd979bd
MF		 33#include <cluster/masklog.h>
34
35#include "ocfs2.h"
36
37/* this should be the only file to include a version 1 header */
38#include "ocfs1_fs_compat.h"
39
40#include "alloc.h"
a11f7e63 41#include "aops.h"
d030cc97 42#include "blockcheck.h"
ccd979bd
MF		 43#include "dlmglue.h"
44#include "export.h"
45#include "extent_map.h"
46#include "heartbeat.h"
47#include "inode.h"
48#include "journal.h"
49#include "localalloc.h"
50#include "namei.h"
51#include "slot_map.h"
52#include "super.h"
53#include "sysfile.h"
54#include "uptodate.h"
cf1d6c76 55#include "xattr.h"
9e33d69f 56#include "quota.h"
374a263e 57#include "refcounttree.h"
b89c5428 58#include "suballoc.h"
ccd979bd
MF		 59
60#include "buffer_head_io.h"
a849d468 61#include "filecheck.h"
ccd979bd 62
1a5c4e2a 63static struct kmem_cache *ocfs2_inode_cachep;
9e33d69f
JK		 64struct kmem_cache *ocfs2_dquot_cachep;
65struct kmem_cache *ocfs2_qf_chunk_cachep;
ccd979bd 66
1a5c4e2a 67static struct dentry *ocfs2_debugfs_root;
ccd979bd
MF		 68
69MODULE_AUTHOR("Oracle");
70MODULE_LICENSE("GPL");
ff8fb335 71MODULE_DESCRIPTION("OCFS2 cluster file system");
ccd979bd 72
c0123ade
TY		 73struct mount_options
74{
d147b3d6 75 unsigned long commit_interval;
c0123ade
TY		 76 unsigned long mount_opt;
77 unsigned int atime_quantum;
38d51b2d 78 unsigned short slot;
73c8a800 79 int localalloc_opt;
d02f00cc 80 unsigned int resv_level;
83f92318 81 int dir_resv_level;
b61817e1 82 char cluster_stack[OCFS2_STACK_LABEL_LEN + 1];
9be53fe6 83 bool user_stack;
c0123ade
TY		 84};
85
9be53fe6 86static int ocfs2_parse_param(struct fs_context *fc, struct fs_parameter *param);
5297aad8
JK		 87static int ocfs2_check_set_options(struct super_block *sb,
88 struct mount_options *options);
34c80b1d 89static int ocfs2_show_options(struct seq_file *s, struct dentry *root);
ccd979bd
MF		 90static void ocfs2_put_super(struct super_block *sb);
91static int ocfs2_mount_volume(struct super_block *sb);
ccd979bd
MF		 92static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err);
93static int ocfs2_initialize_mem_caches(void);
94static void ocfs2_free_mem_caches(void);
95static void ocfs2_delete_osb(struct ocfs2_super *osb);
96
726c3342 97static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf);
ccd979bd
MF		 98
99static int ocfs2_sync_fs(struct super_block *sb, int wait);
100
101static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb);
102static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb);
bddb8eb3 103static void ocfs2_release_system_inodes(struct ocfs2_super *osb);
ccd979bd
MF		 104static int ocfs2_check_volume(struct ocfs2_super *osb);
105static int ocfs2_verify_volume(struct ocfs2_dinode *di,
106 struct buffer_head *bh,
73be192b
JB		 107 u32 sectsize,
108 struct ocfs2_blockcheck_stats *stats);
ccd979bd
MF		 109static int ocfs2_initialize_super(struct super_block *sb,
110 struct buffer_head *bh,
73be192b
JB		 111 int sector_size,
112 struct ocfs2_blockcheck_stats *stats);
ccd979bd
MF		 113static int ocfs2_get_sector(struct super_block *sb,
114 struct buffer_head **bh,
115 int block,
116 int sect_size);
ccd979bd 117static struct inode *ocfs2_alloc_inode(struct super_block *sb);
e91b9194 118static void ocfs2_free_inode(struct inode *inode);
19ece546
JK		 119static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend);
120static int ocfs2_enable_quotas(struct ocfs2_super *osb);
121static void ocfs2_disable_quotas(struct ocfs2_super *osb);
ccd979bd 122
ccb49011 123static struct dquot __rcu **ocfs2_get_dquots(struct inode *inode)
1c92ec67
JK		 124{
125 return OCFS2_I(inode)->i_dquot;
126}
127
ee9b6d61 128static const struct super_operations ocfs2_sops = {
ccd979bd
MF		 129 .statfs = ocfs2_statfs,
130 .alloc_inode = ocfs2_alloc_inode,
e91b9194 131 .free_inode = ocfs2_free_inode,
ccd979bd 132 .drop_inode = ocfs2_drop_inode,
066d92dc 133 .evict_inode = ocfs2_evict_inode,
ccd979bd 134 .sync_fs = ocfs2_sync_fs,
ccd979bd 135 .put_super = ocfs2_put_super,
d550071c 136 .show_options = ocfs2_show_options,
9e33d69f
JK		 137 .quota_read = ocfs2_quota_read,
138 .quota_write = ocfs2_quota_write,
1c92ec67 139 .get_dquots = ocfs2_get_dquots,
ccd979bd
MF		 140};
141
142enum {
143 Opt_barrier,
9be53fe6 144 Opt_errors,
ccd979bd 145 Opt_intr,
9be53fe6
ES		 146 Opt_heartbeat,
147 Opt_data,
7f1a37e3 148 Opt_atime_quantum,
baf4661a 149 Opt_slot,
d147b3d6 150 Opt_commit,
2fbe8d1e 151 Opt_localalloc,
53fc622b 152 Opt_localflocks,
b61817e1 153 Opt_stack,
cf1d6c76 154 Opt_user_xattr,
12462f1d 155 Opt_inode64,
a68979b8 156 Opt_acl,
19ece546
JK		 157 Opt_usrquota,
158 Opt_grpquota,
9be53fe6 159 Opt_coherency,
d02f00cc 160 Opt_resv_level,
83f92318 161 Opt_dir_resv_level,
1dfeb768 162 Opt_journal_async_commit,
ccd979bd
MF		 163};
164
9be53fe6
ES		 165static const struct constant_table ocfs2_param_errors[] = {
166 {"panic", OCFS2_MOUNT_ERRORS_PANIC},
167 {"remount-ro", OCFS2_MOUNT_ERRORS_ROFS},
168 {"continue", OCFS2_MOUNT_ERRORS_CONT},
169 {}
170};
171
172static const struct constant_table ocfs2_param_heartbeat[] = {
173 {"local", OCFS2_MOUNT_HB_LOCAL},
174 {"none", OCFS2_MOUNT_HB_NONE},
175 {"global", OCFS2_MOUNT_HB_GLOBAL},
176 {}
177};
178
179static const struct constant_table ocfs2_param_data[] = {
180 {"writeback", OCFS2_MOUNT_DATA_WRITEBACK},
181 {"ordered", 0},
182 {}
183};
184
185static const struct constant_table ocfs2_param_coherency[] = {
186 {"buffered", OCFS2_MOUNT_COHERENCY_BUFFERED},
187 {"full", 0},
188 {}
189};
190
191static const struct fs_parameter_spec ocfs2_param_spec[] = {
192 fsparam_u32 ("barrier", Opt_barrier),
193 fsparam_enum ("errors", Opt_errors, ocfs2_param_errors),
194 fsparam_flag_no ("intr", Opt_intr),
195 fsparam_enum ("heartbeat", Opt_heartbeat, ocfs2_param_heartbeat),
196 fsparam_enum ("data", Opt_data, ocfs2_param_data),
197 fsparam_u32 ("atime_quantum", Opt_atime_quantum),
198 fsparam_u32 ("preferred_slot", Opt_slot),
199 fsparam_u32 ("commit", Opt_commit),
200 fsparam_s32 ("localalloc", Opt_localalloc),
201 fsparam_flag ("localflocks", Opt_localflocks),
202 fsparam_string ("cluster_stack", Opt_stack),
203 fsparam_flag_no ("user_xattr", Opt_user_xattr),
204 fsparam_flag ("inode64", Opt_inode64),
205 fsparam_flag_no ("acl", Opt_acl),
206 fsparam_flag ("usrquota", Opt_usrquota),
207 fsparam_flag ("grpquota", Opt_grpquota),
208 fsparam_enum ("coherency", Opt_coherency, ocfs2_param_coherency),
209 fsparam_u32 ("resv_level", Opt_resv_level),
210 fsparam_u32 ("dir_resv_level", Opt_dir_resv_level),
211 fsparam_flag ("journal_async_commit", Opt_journal_async_commit),
212 {}
ccd979bd
MF		 213};
214
50397507
SM		 215#ifdef CONFIG_DEBUG_FS
216static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len)
217{
50397507
SM		 218 struct ocfs2_cluster_connection *cconn = osb->cconn;
219 struct ocfs2_recovery_map *rm = osb->recovery_map;
df152c24
SM		 220 struct ocfs2_orphan_scan *os = &osb->osb_orphan_scan;
221 int i, out = 0;
bfd97a03 222 unsigned long flags;
50397507 223
d293d3af 224 out += scnprintf(buf + out, len - out,
50397507
SM		 225 "%10s => Id: %-s Uuid: %-s Gen: 0x%X Label: %-s\n",
226 "Device", osb->dev_str, osb->uuid_str,
227 osb->fs_generation, osb->vol_label);
228
d293d3af 229 out += scnprintf(buf + out, len - out,
50397507
SM		 230 "%10s => State: %d Flags: 0x%lX\n", "Volume",
231 atomic_read(&osb->vol_state), osb->osb_flags);
232
d293d3af 233 out += scnprintf(buf + out, len - out,
50397507
SM		 234 "%10s => Block: %lu Cluster: %d\n", "Sizes",
235 osb->sb->s_blocksize, osb->s_clustersize);
236
d293d3af 237 out += scnprintf(buf + out, len - out,
50397507
SM		 238 "%10s => Compat: 0x%X Incompat: 0x%X "
239 "ROcompat: 0x%X\n",
240 "Features", osb->s_feature_compat,
241 osb->s_feature_incompat, osb->s_feature_ro_compat);
242
d293d3af 243 out += scnprintf(buf + out, len - out,
50397507
SM		 244 "%10s => Opts: 0x%lX AtimeQuanta: %u\n", "Mount",
245 osb->s_mount_opt, osb->s_atime_quantum);
246
c3d38840 247 if (cconn) {
d293d3af 248 out += scnprintf(buf + out, len - out,
c3d38840
SM		 249 "%10s => Stack: %s Name: %*s "
250 "Version: %d.%d\n", "Cluster",
251 (*osb->osb_cluster_stack == '\0' ?
252 "o2cb" : osb->osb_cluster_stack),
253 cconn->cc_namelen, cconn->cc_name,
254 cconn->cc_version.pv_major,
255 cconn->cc_version.pv_minor);
256 }
50397507 257
bfd97a03 258 spin_lock_irqsave(&osb->dc_task_lock, flags);
d293d3af 259 out += scnprintf(buf + out, len - out,
50397507
SM		 260 "%10s => Pid: %d Count: %lu WakeSeq: %lu "
261 "WorkSeq: %lu\n", "DownCnvt",
c3d38840
SM		 262 (osb->dc_task ? task_pid_nr(osb->dc_task) : -1),
263 osb->blocked_lock_count, osb->dc_wake_sequence,
264 osb->dc_work_sequence);
bfd97a03 265 spin_unlock_irqrestore(&osb->dc_task_lock, flags);
50397507
SM		 266
267 spin_lock(&osb->osb_lock);
d293d3af 268 out += scnprintf(buf + out, len - out, "%10s => Pid: %d Nodes:",
50397507
SM		 269 "Recovery",
270 (osb->recovery_thread_task ?
271 task_pid_nr(osb->recovery_thread_task) : -1));
272 if (rm->rm_used == 0)
d293d3af 273 out += scnprintf(buf + out, len - out, " None\n");
50397507
SM		 274 else {
275 for (i = 0; i < rm->rm_used; i++)
d293d3af 276 out += scnprintf(buf + out, len - out, " %d",
50397507 277 rm->rm_entries[i]);
d293d3af 278 out += scnprintf(buf + out, len - out, "\n");
50397507
SM		 279 }
280 spin_unlock(&osb->osb_lock);
281
d293d3af 282 out += scnprintf(buf + out, len - out,
8fa9d17f 283 "%10s => Pid: %d Interval: %lu\n", "Commit",
c3d38840 284 (osb->commit_task ? task_pid_nr(osb->commit_task) : -1),
8fa9d17f 285 osb->osb_commit_interval);
50397507 286
d293d3af 287 out += scnprintf(buf + out, len - out,
c3d38840 288 "%10s => State: %d TxnId: %lu NumTxns: %d\n",
50397507 289 "Journal", osb->journal->j_state,
c3d38840
SM		 290 osb->journal->j_trans_id,
291 atomic_read(&osb->journal->j_num_trans));
50397507 292
d293d3af 293 out += scnprintf(buf + out, len - out,
50397507
SM		 294 "%10s => GlobalAllocs: %d LocalAllocs: %d "
295 "SubAllocs: %d LAWinMoves: %d SAExtends: %d\n",
296 "Stats",
297 atomic_read(&osb->alloc_stats.bitmap_data),
298 atomic_read(&osb->alloc_stats.local_data),
299 atomic_read(&osb->alloc_stats.bg_allocs),
300 atomic_read(&osb->alloc_stats.moves),
301 atomic_read(&osb->alloc_stats.bg_extends));
302
d293d3af 303 out += scnprintf(buf + out, len - out,
50397507
SM		 304 "%10s => State: %u Descriptor: %llu Size: %u bits "
305 "Default: %u bits\n",
306 "LocalAlloc", osb->local_alloc_state,
307 (unsigned long long)osb->la_last_gd,
308 osb->local_alloc_bits, osb->local_alloc_default_bits);
309
310 spin_lock(&osb->osb_lock);
d293d3af 311 out += scnprintf(buf + out, len - out,
b89c5428
TY		 312 "%10s => InodeSlot: %d StolenInodes: %d, "
313 "MetaSlot: %d StolenMeta: %d\n", "Steal",
50397507 314 osb->s_inode_steal_slot,
b89c5428
TY		 315 atomic_read(&osb->s_num_inodes_stolen),
316 osb->s_meta_steal_slot,
317 atomic_read(&osb->s_num_meta_stolen));
50397507
SM		 318 spin_unlock(&osb->osb_lock);
319
d293d3af
TI		 320 out += scnprintf(buf + out, len - out, "OrphanScan => ");
321 out += scnprintf(buf + out, len - out, "Local: %u Global: %u ",
df152c24 322 os->os_count, os->os_seqno);
d293d3af 323 out += scnprintf(buf + out, len - out, " Last Scan: ");
df152c24 324 if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE)
d293d3af 325 out += scnprintf(buf + out, len - out, "Disabled\n");
df152c24 326 else
d293d3af 327 out += scnprintf(buf + out, len - out, "%lu seconds ago\n",
395627b0 328 (unsigned long)(ktime_get_seconds() - os->os_scantime));
df152c24 329
d293d3af 330 out += scnprintf(buf + out, len - out, "%10s => %3s %10s\n",
50397507 331 "Slots", "Num", "RecoGen");
50397507 332 for (i = 0; i < osb->max_slots; ++i) {
d293d3af 333 out += scnprintf(buf + out, len - out,
50397507
SM		 334 "%10s %c %3d %10d\n",
335 " ",
336 (i == osb->slot_num ? '*' : ' '),
337 i, osb->slot_recovery_generations[i]);
338 }
339
340 return out;
341}
342
343static int ocfs2_osb_debug_open(struct inode *inode, struct file *file)
344{
345 struct ocfs2_super *osb = inode->i_private;
346 char *buf = NULL;
347
348 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
349 if (!buf)
350 goto bail;
351
352 i_size_write(inode, ocfs2_osb_dump(osb, buf, PAGE_SIZE));
353
354 file->private_data = buf;
355
356 return 0;
357bail:
358 return -ENOMEM;
359}
360
361static int ocfs2_debug_release(struct inode *inode, struct file *file)
362{
363 kfree(file->private_data);
364 return 0;
365}
366
367static ssize_t ocfs2_debug_read(struct file *file, char __user *buf,
368 size_t nbytes, loff_t *ppos)
369{
370 return simple_read_from_buffer(buf, nbytes, ppos, file->private_data,
371 i_size_read(file->f_mapping->host));
372}
373#else
374static int ocfs2_osb_debug_open(struct inode *inode, struct file *file)
375{
376 return 0;
377}
378static int ocfs2_debug_release(struct inode *inode, struct file *file)
379{
380 return 0;
381}
382static ssize_t ocfs2_debug_read(struct file *file, char __user *buf,
383 size_t nbytes, loff_t *ppos)
384{
385 return 0;
386}
387#endif /* CONFIG_DEBUG_FS */
388
828c0950 389static const struct file_operations ocfs2_osb_debug_fops = {
50397507
SM		 390 .open = ocfs2_osb_debug_open,
391 .release = ocfs2_debug_release,
392 .read = ocfs2_debug_read,
393 .llseek = generic_file_llseek,
394};
395
ccd979bd
MF		 396static int ocfs2_sync_fs(struct super_block *sb, int wait)
397{
bddb8eb3 398 int status;
ccd979bd
MF		 399 tid_t target;
400 struct ocfs2_super *osb = OCFS2_SB(sb);
401
ccd979bd
MF		 402 if (ocfs2_is_hard_readonly(osb))
403 return -EROFS;
404
405 if (wait) {
406 status = ocfs2_flush_truncate_log(osb);
407 if (status < 0)
408 mlog_errno(status);
409 } else {
410 ocfs2_schedule_truncate_log_flush(osb, 0);
411 }
412
1119d3c0 413 if (jbd2_journal_start_commit(osb->journal->j_journal,
2b4e30fb 414 &target)) {
ccd979bd 415 if (wait)
1119d3c0 416 jbd2_log_wait_commit(osb->journal->j_journal,
2b4e30fb 417 target);
ccd979bd
MF		 418 }
419 return 0;
420}
421
1a224ad1
JK		 422static int ocfs2_need_system_inode(struct ocfs2_super *osb, int ino)
423{
424 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_USRQUOTA)
425 && (ino == USER_QUOTA_SYSTEM_INODE
426 || ino == LOCAL_USER_QUOTA_SYSTEM_INODE))
427 return 0;
428 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)
429 && (ino == GROUP_QUOTA_SYSTEM_INODE
430 || ino == LOCAL_GROUP_QUOTA_SYSTEM_INODE))
431 return 0;
432 return 1;
433}
434
ccd979bd
MF		 435static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb)
436{
437 struct inode *new = NULL;
438 int status = 0;
439 int i;
440
5fa0613e 441 new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE, 0);
ccd979bd
MF		 442 if (IS_ERR(new)) {
443 status = PTR_ERR(new);
444 mlog_errno(status);
445 goto bail;
446 }
447 osb->root_inode = new;
448
5fa0613e 449 new = ocfs2_iget(osb, osb->system_dir_blkno, OCFS2_FI_FLAG_SYSFILE, 0);
ccd979bd
MF		 450 if (IS_ERR(new)) {
451 status = PTR_ERR(new);
452 mlog_errno(status);
453 goto bail;
454 }
455 osb->sys_root_inode = new;
456
457 for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE;
458 i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) {
1a224ad1
JK		 459 if (!ocfs2_need_system_inode(osb, i))
460 continue;
ccd979bd
MF		 461 new = ocfs2_get_system_file_inode(osb, i, osb->slot_num);
462 if (!new) {
463 ocfs2_release_system_inodes(osb);
025bcbde 464 status = ocfs2_is_soft_readonly(osb) ? -EROFS : -EINVAL;
ccd979bd 465 mlog_errno(status);
ccd979bd
MF		 466 mlog(ML_ERROR, "Unable to load system inode %d, "
467 "possibly corrupt fs?", i);
468 goto bail;
469 }
470 // the array now has one ref, so drop this one
471 iput(new);
472 }
473
474bail:
c1e8d35e
TM		 475 if (status)
476 mlog_errno(status);
ccd979bd
MF		 477 return status;
478}
479
480static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb)
481{
482 struct inode *new = NULL;
483 int status = 0;
484 int i;
485
ccd979bd
MF		 486 for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1;
487 i < NUM_SYSTEM_INODES;
488 i++) {
1a224ad1
JK		 489 if (!ocfs2_need_system_inode(osb, i))
490 continue;
ccd979bd
MF		 491 new = ocfs2_get_system_file_inode(osb, i, osb->slot_num);
492 if (!new) {
493 ocfs2_release_system_inodes(osb);
025bcbde 494 status = ocfs2_is_soft_readonly(osb) ? -EROFS : -EINVAL;
ccd979bd
MF		 495 mlog(ML_ERROR, "status=%d, sysfile=%d, slot=%d\n",
496 status, i, osb->slot_num);
497 goto bail;
498 }
499 /* the array now has one ref, so drop this one */
500 iput(new);
501 }
502
503bail:
c1e8d35e
TM		 504 if (status)
505 mlog_errno(status);
ccd979bd
MF		 506 return status;
507}
508
bddb8eb3 509static void ocfs2_release_system_inodes(struct ocfs2_super *osb)
ccd979bd 510{
bddb8eb3 511 int i;
ccd979bd
MF		 512 struct inode *inode;
513
b4d693fc
TM		 514 for (i = 0; i < NUM_GLOBAL_SYSTEM_INODES; i++) {
515 inode = osb->global_system_inodes[i];
ccd979bd
MF		 516 if (inode) {
517 iput(inode);
b4d693fc 518 osb->global_system_inodes[i] = NULL;
ccd979bd
MF		 519 }
520 }
521
522 inode = osb->sys_root_inode;
523 if (inode) {
524 iput(inode);
525 osb->sys_root_inode = NULL;
526 }
527
528 inode = osb->root_inode;
529 if (inode) {
530 iput(inode);
531 osb->root_inode = NULL;
532 }
533
b4d693fc 534 if (!osb->local_system_inodes)
c1e8d35e 535 return;
b4d693fc
TM		 536
537 for (i = 0; i < NUM_LOCAL_SYSTEM_INODES * osb->max_slots; i++) {
538 if (osb->local_system_inodes[i]) {
539 iput(osb->local_system_inodes[i]);
540 osb->local_system_inodes[i] = NULL;
541 }
542 }
543
544 kfree(osb->local_system_inodes);
545 osb->local_system_inodes = NULL;
ccd979bd
MF		 546}
547
548/* We're allocating fs objects, use GFP_NOFS */
549static struct inode *ocfs2_alloc_inode(struct super_block *sb)
550{
551 struct ocfs2_inode_info *oi;
552
fd60b288 553 oi = alloc_inode_sb(sb, ocfs2_inode_cachep, GFP_NOFS);
ccd979bd
MF		 554 if (!oi)
555 return NULL;
556
2931cdcb
DW		 557 oi->i_sync_tid = 0;
558 oi->i_datasync_tid = 0;
1c92ec67 559 memset(&oi->i_dquot, 0, sizeof(oi->i_dquot));
2931cdcb 560
2b4e30fb 561 jbd2_journal_init_jbd_inode(&oi->ip_jinode, &oi->vfs_inode);
ccd979bd
MF		 562 return &oi->vfs_inode;
563}
564
e91b9194 565static void ocfs2_free_inode(struct inode *inode)
ccd979bd
MF		 566{
567 kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode));
568}
569
5a254031
MF		 570static unsigned long long ocfs2_max_file_offset(unsigned int bbits,
571 unsigned int cbits)
ccd979bd 572{
5a254031
MF		 573 unsigned int bytes = 1 << cbits;
574 unsigned int trim = bytes;
575 unsigned int bitshift = 32;
576
577 /*
578 * i_size and all block offsets in ocfs2 are always 64 bits
579 * wide. i_clusters is 32 bits, in cluster-sized units. So on
580 * 64 bit platforms, cluster size will be the limiting factor.
ccd979bd
MF		 581 */
582
583#if BITS_PER_LONG == 32
2ecd05ae 584 BUILD_BUG_ON(sizeof(sector_t) != 8);
5a254031
MF		 585 /*
586 * We might be limited by page cache size.
587 */
09cbfeaf
KS		 588 if (bytes > PAGE_SIZE) {
589 bytes = PAGE_SIZE;
5a254031
MF		 590 trim = 1;
591 /*
592 * Shift by 31 here so that we don't get larger than
593 * MAX_LFS_FILESIZE
594 */
595 bitshift = 31;
596 }
ccd979bd
MF		 597#endif
598
5a254031
MF		 599 /*
600 * Trim by a whole cluster when we can actually approach the
601 * on-disk limits. Otherwise we can overflow i_clusters when
602 * an extent start is at the max offset.
603 */
604 return (((unsigned long long)bytes) << bitshift) - trim;
ccd979bd
MF		 605}
606
9be53fe6 607static int ocfs2_reconfigure(struct fs_context *fc)
ccd979bd
MF		 608{
609 int incompat_features;
610 int ret = 0;
9be53fe6
ES		 611 struct mount_options *parsed_options = fc->fs_private;
612 struct super_block *sb = fc->root->d_sb;
ccd979bd 613 struct ocfs2_super *osb = OCFS2_SB(sb);
2c442719 614 u32 tmp;
ccd979bd 615
02b9984d
TT		 616 sync_filesystem(sb);
617
9be53fe6 618 if (!ocfs2_check_set_options(sb, parsed_options)) {
ccd979bd
MF		 619 ret = -EINVAL;
620 goto out;
621 }
622
2c442719
SM		 623 tmp = OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL |
624 OCFS2_MOUNT_HB_NONE;
9be53fe6 625 if ((osb->s_mount_opt & tmp) != (parsed_options->mount_opt & tmp)) {
ccd979bd
MF		 626 ret = -EINVAL;
627 mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n");
628 goto out;
629 }
630
631 if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) !=
9be53fe6 632 (parsed_options->mount_opt & OCFS2_MOUNT_DATA_WRITEBACK)) {
ccd979bd
MF		 633 ret = -EINVAL;
634 mlog(ML_ERROR, "Cannot change data mode on remount\n");
635 goto out;
636 }
637
12462f1d
JB		 638 /* Probably don't want this on remount; it might
639 * mess with other nodes */
640 if (!(osb->s_mount_opt & OCFS2_MOUNT_INODE64) &&
9be53fe6 641 (parsed_options->mount_opt & OCFS2_MOUNT_INODE64)) {
12462f1d
JB		 642 ret = -EINVAL;
643 mlog(ML_ERROR, "Cannot enable inode64 on remount\n");
644 goto out;
645 }
646
ccd979bd 647 /* We're going to/from readonly mode. */
9be53fe6 648 if ((bool)(fc->sb_flags & SB_RDONLY) != sb_rdonly(sb)) {
19ece546 649 /* Disable quota accounting before remounting RO */
9be53fe6 650 if (fc->sb_flags & SB_RDONLY) {
19ece546
JK		 651 ret = ocfs2_susp_quotas(osb, 0);
652 if (ret < 0)
653 goto out;
654 }
ccd979bd
MF		 655 /* Lock here so the check of HARD_RO and the potential
656 * setting of SOFT_RO is atomic. */
657 spin_lock(&osb->osb_lock);
658 if (osb->osb_flags & OCFS2_OSB_HARD_RO) {
659 mlog(ML_ERROR, "Remount on readonly device is forbidden.\n");
660 ret = -EROFS;
661 goto unlock_osb;
662 }
663
9be53fe6 664 if (fc->sb_flags & SB_RDONLY) {
1751e8a6 665 sb->s_flags |= SB_RDONLY;
ccd979bd
MF		 666 osb->osb_flags |= OCFS2_OSB_SOFT_RO;
667 } else {
ccd979bd
MF		 668 if (osb->osb_flags & OCFS2_OSB_ERROR_FS) {
669 mlog(ML_ERROR, "Cannot remount RDWR "
670 "filesystem due to previous errors.\n");
671 ret = -EROFS;
672 goto unlock_osb;
673 }
674 incompat_features = OCFS2_HAS_RO_COMPAT_FEATURE(sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP);
675 if (incompat_features) {
676 mlog(ML_ERROR, "Cannot remount RDWR because "
677 "of unsupported optional features "
678 "(%x).\n", incompat_features);
679 ret = -EINVAL;
680 goto unlock_osb;
681 }
1751e8a6 682 sb->s_flags &= ~SB_RDONLY;
ccd979bd
MF		 683 osb->osb_flags &= ~OCFS2_OSB_SOFT_RO;
684 }
9be53fe6 685 trace_ocfs2_remount(sb->s_flags, osb->osb_flags, fc->sb_flags);
ccd979bd
MF		 686unlock_osb:
687 spin_unlock(&osb->osb_lock);
19ece546 688 /* Enable quota accounting after remounting RW */
9be53fe6 689 if (!ret && !(fc->sb_flags & SB_RDONLY)) {
19ece546
JK		 690 if (sb_any_quota_suspended(sb))
691 ret = ocfs2_susp_quotas(osb, 1);
692 else
693 ret = ocfs2_enable_quotas(osb);
694 if (ret < 0) {
695 /* Return back changes... */
696 spin_lock(&osb->osb_lock);
1751e8a6 697 sb->s_flags |= SB_RDONLY;
19ece546
JK		 698 osb->osb_flags |= OCFS2_OSB_SOFT_RO;
699 spin_unlock(&osb->osb_lock);
700 goto out;
701 }
702 }
ccd979bd
MF		 703 }
704
705 if (!ret) {
ccd979bd
MF		 706 /* Only save off the new mount options in case of a successful
707 * remount. */
9be53fe6
ES		 708 osb->s_mount_opt = parsed_options->mount_opt;
709 osb->s_atime_quantum = parsed_options->atime_quantum;
710 osb->preferred_slot = parsed_options->slot;
711 if (parsed_options->commit_interval)
712 osb->osb_commit_interval = parsed_options->commit_interval;
e001e796
MF		 713
714 if (!ocfs2_is_hard_readonly(osb))
715 ocfs2_set_journal_params(osb);
57b09bb5 716
1751e8a6 717 sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
57b09bb5 718 ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ?
1751e8a6 719 SB_POSIXACL : 0);
ccd979bd
MF		 720 }
721out:
722 return ret;
723}
724
725static int ocfs2_sb_probe(struct super_block *sb,
726 struct buffer_head **bh,
73be192b
JB		 727 int *sector_size,
728 struct ocfs2_blockcheck_stats *stats)
ccd979bd 729{
bddb8eb3 730 int status, tmpstat;
ccd979bd
MF		 731 struct ocfs1_vol_disk_hdr *hdr;
732 struct ocfs2_dinode *di;
733 int blksize;
734
735 *bh = NULL;
736
737 /* may be > 512 */
e1defc4f 738 *sector_size = bdev_logical_block_size(sb->s_bdev);
ccd979bd
MF		 739 if (*sector_size > OCFS2_MAX_BLOCKSIZE) {
740 mlog(ML_ERROR, "Hardware sector size too large: %d (max=%d)\n",
741 *sector_size, OCFS2_MAX_BLOCKSIZE);
742 status = -EINVAL;
743 goto bail;
744 }
745
746 /* Can this really happen? */
747 if (*sector_size < OCFS2_MIN_BLOCKSIZE)
748 *sector_size = OCFS2_MIN_BLOCKSIZE;
749
750 /* check block zero for old format */
751 status = ocfs2_get_sector(sb, bh, 0, *sector_size);
752 if (status < 0) {
753 mlog_errno(status);
754 goto bail;
755 }
756 hdr = (struct ocfs1_vol_disk_hdr *) (*bh)->b_data;
757 if (hdr->major_version == OCFS1_MAJOR_VERSION) {
758 mlog(ML_ERROR, "incompatible version: %u.%u\n",
759 hdr->major_version, hdr->minor_version);
760 status = -EINVAL;
761 }
762 if (memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE,
763 strlen(OCFS1_VOLUME_SIGNATURE)) == 0) {
764 mlog(ML_ERROR, "incompatible volume signature: %8s\n",
765 hdr->signature);
766 status = -EINVAL;
767 }
768 brelse(*bh);
769 *bh = NULL;
770 if (status < 0) {
771 mlog(ML_ERROR, "This is an ocfs v1 filesystem which must be "
772 "upgraded before mounting with ocfs v2\n");
773 goto bail;
774 }
775
776 /*
777 * Now check at magic offset for 512, 1024, 2048, 4096
778 * blocksizes. 4096 is the maximum blocksize because it is
779 * the minimum clustersize.
780 */
781 status = -EINVAL;
782 for (blksize = *sector_size;
783 blksize <= OCFS2_MAX_BLOCKSIZE;
784 blksize <<= 1) {
785 tmpstat = ocfs2_get_sector(sb, bh,
786 OCFS2_SUPER_BLOCK_BLKNO,
787 blksize);
788 if (tmpstat < 0) {
789 status = tmpstat;
790 mlog_errno(status);
fb5cbe9e 791 break;
ccd979bd
MF		 792 }
793 di = (struct ocfs2_dinode *) (*bh)->b_data;
73be192b 794 memset(stats, 0, sizeof(struct ocfs2_blockcheck_stats));
1c1d9793 795 spin_lock_init(&stats->b_lock);
fb5cbe9e
JB		 796 tmpstat = ocfs2_verify_volume(di, *bh, blksize, stats);
797 if (tmpstat < 0) {
798 brelse(*bh);
799 *bh = NULL;
800 }
801 if (tmpstat != -EAGAIN) {
802 status = tmpstat;
ccd979bd 803 break;
fb5cbe9e 804 }
ccd979bd
MF		 805 }
806
807bail:
808 return status;
809}
810
c271c5c2
SM		 811static int ocfs2_verify_heartbeat(struct ocfs2_super *osb)
812{
2c442719
SM		 813 u32 hb_enabled = OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL;
814
815 if (osb->s_mount_opt & hb_enabled) {
816 if (ocfs2_mount_local(osb)) {
c271c5c2
SM		 817 mlog(ML_ERROR, "Cannot heartbeat on a locally "
818 "mounted device.\n");
819 return -EINVAL;
820 }
2c442719 821 if (ocfs2_userspace_stack(osb)) {
b61817e1
JB		 822 mlog(ML_ERROR, "Userspace stack expected, but "
823 "o2cb heartbeat arguments passed to mount\n");
824 return -EINVAL;
825 }
2c442719
SM		 826 if (((osb->s_mount_opt & OCFS2_MOUNT_HB_GLOBAL) &&
827 !ocfs2_cluster_o2cb_global_heartbeat(osb)) ||
828 ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) &&
829 ocfs2_cluster_o2cb_global_heartbeat(osb))) {
830 mlog(ML_ERROR, "Mismatching o2cb heartbeat modes\n");
831 return -EINVAL;
832 }
b61817e1
JB		 833 }
834
2c442719 835 if (!(osb->s_mount_opt & hb_enabled)) {
b61817e1
JB		 836 if (!ocfs2_mount_local(osb) && !ocfs2_is_hard_readonly(osb) &&
837 !ocfs2_userspace_stack(osb)) {
c271c5c2
SM		 838 mlog(ML_ERROR, "Heartbeat has to be started to mount "
839 "a read-write clustered device.\n");
840 return -EINVAL;
841 }
842 }
843
844 return 0;
845}
846
b61817e1
JB		 847/*
848 * If we're using a userspace stack, mount should have passed
849 * a name that matches the disk. If not, mount should not
850 * have passed a stack.
851 */
852static int ocfs2_verify_userspace_stack(struct ocfs2_super *osb,
853 struct mount_options *mopt)
854{
855 if (!ocfs2_userspace_stack(osb) && mopt->cluster_stack[0]) {
856 mlog(ML_ERROR,
857 "cluster stack passed to mount, but this filesystem "
858 "does not support it\n");
859 return -EINVAL;
860 }
861
862 if (ocfs2_userspace_stack(osb) &&
863 strncmp(osb->osb_cluster_stack, mopt->cluster_stack,
864 OCFS2_STACK_LABEL_LEN)) {
865 mlog(ML_ERROR,
866 "cluster stack passed to mount (\"%s\") does not "
867 "match the filesystem (\"%s\")\n",
868 mopt->cluster_stack,
869 osb->osb_cluster_stack);
870 return -EINVAL;
871 }
872
873 return 0;
874}
875
19ece546
JK		 876static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend)
877{
878 int type;
879 struct super_block *sb = osb->sb;
52362810
JK		 880 unsigned int feature[OCFS2_MAXQUOTAS] = {
881 OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
882 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
19ece546
JK		 883 int status = 0;
884
52362810 885 for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
19ece546
JK		 886 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
887 continue;
888 if (unsuspend)
0f0dd62f 889 status = dquot_resume(sb, type);
eea7feb0
JK		 890 else {
891 struct ocfs2_mem_dqinfo *oinfo;
892
893 /* Cancel periodic syncing before suspending */
894 oinfo = sb_dqinfo(sb, type)->dqi_priv;
895 cancel_delayed_work_sync(&oinfo->dqi_sync_work);
0f0dd62f 896 status = dquot_suspend(sb, type);
eea7feb0 897 }
19ece546
JK		 898 if (status < 0)
899 break;
900 }
901 if (status < 0)
902 mlog(ML_ERROR, "Failed to suspend/unsuspend quotas on "
903 "remount (error = %d).\n", status);
904 return status;
905}
906
907static int ocfs2_enable_quotas(struct ocfs2_super *osb)
908{
52362810 909 struct inode *inode[OCFS2_MAXQUOTAS] = { NULL, NULL };
19ece546 910 struct super_block *sb = osb->sb;
52362810
JK		 911 unsigned int feature[OCFS2_MAXQUOTAS] = {
912 OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
913 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
914 unsigned int ino[OCFS2_MAXQUOTAS] = {
915 LOCAL_USER_QUOTA_SYSTEM_INODE,
19ece546
JK		 916 LOCAL_GROUP_QUOTA_SYSTEM_INODE };
917 int status;
918 int type;
919
920 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NEGATIVE_USAGE;
52362810 921 for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
19ece546
JK		 922 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
923 continue;
924 inode[type] = ocfs2_get_system_file_inode(osb, ino[type],
925 osb->slot_num);
926 if (!inode[type]) {
927 status = -ENOENT;
928 goto out_quota_off;
929 }
7212b95e
JK		 930 status = dquot_load_quota_inode(inode[type], type, QFMT_OCFS2,
931 DQUOT_USAGE_ENABLED);
19ece546
JK		 932 if (status < 0)
933 goto out_quota_off;
934 }
935
52362810 936 for (type = 0; type < OCFS2_MAXQUOTAS; type++)
19ece546
JK		 937 iput(inode[type]);
938 return 0;
939out_quota_off:
940 ocfs2_disable_quotas(osb);
52362810 941 for (type = 0; type < OCFS2_MAXQUOTAS; type++)
19ece546
JK		 942 iput(inode[type]);
943 mlog_errno(status);
944 return status;
945}
946
947static void ocfs2_disable_quotas(struct ocfs2_super *osb)
948{
949 int type;
950 struct inode *inode;
951 struct super_block *sb = osb->sb;
c06bcbfa 952 struct ocfs2_mem_dqinfo *oinfo;
19ece546
JK		 953
954 /* We mostly ignore errors in this function because there's not much
955 * we can do when we see them */
52362810 956 for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
19ece546
JK		 957 if (!sb_has_quota_loaded(sb, type))
958 continue;
50d92788
LH		 959 if (!sb_has_quota_suspended(sb, type)) {
960 oinfo = sb_dqinfo(sb, type)->dqi_priv;
961 cancel_delayed_work_sync(&oinfo->dqi_sync_work);
962 }
19ece546
JK		 963 inode = igrab(sb->s_dquot.files[type]);
964 /* Turn off quotas. This will remove all dquot structures from
965 * memory and so they will be automatically synced to global
966 * quota files */
0f0dd62f
CH		 967 dquot_disable(sb, type, DQUOT_USAGE_ENABLED |
968 DQUOT_LIMITS_ENABLED);
19ece546
JK		 969 iput(inode);
970 }
971}
972
9be53fe6 973static int ocfs2_fill_super(struct super_block *sb, struct fs_context *fc)
ccd979bd
MF		 974{
975 struct dentry *root;
976 int status, sector_size;
9be53fe6 977 struct mount_options *parsed_options = fc->fs_private;
ccd979bd
MF		 978 struct inode *inode = NULL;
979 struct ocfs2_super *osb = NULL;
980 struct buffer_head *bh = NULL;
49fa8140 981 char nodestr[12];
73be192b 982 struct ocfs2_blockcheck_stats stats;
ccd979bd 983
9be53fe6 984 trace_ocfs2_fill_super(sb, fc, fc->sb_flags & SB_SILENT);
ccd979bd
MF		 985
986 /* probe for superblock */
73be192b 987 status = ocfs2_sb_probe(sb, &bh, &sector_size, &stats);
ccd979bd
MF		 988 if (status < 0) {
989 mlog(ML_ERROR, "superblock probe failed!\n");
f1e75d12 990 goto out;
ccd979bd
MF		 991 }
992
73be192b 993 status = ocfs2_initialize_super(sb, bh, sector_size, &stats);
ccd979bd
MF		 994 brelse(bh);
995 bh = NULL;
f1e75d12
HZO		 996 if (status < 0)
997 goto out;
998
999 osb = OCFS2_SB(sb);
a68979b8 1000
9be53fe6 1001 if (!ocfs2_check_set_options(sb, parsed_options)) {
5297aad8 1002 status = -EINVAL;
f1e75d12 1003 goto out_super;
5297aad8 1004 }
9be53fe6
ES		 1005 osb->s_mount_opt = parsed_options->mount_opt;
1006 osb->s_atime_quantum = parsed_options->atime_quantum;
1007 osb->preferred_slot = parsed_options->slot;
1008 osb->osb_commit_interval = parsed_options->commit_interval;
1009
1010 ocfs2_la_set_sizes(osb, parsed_options->localalloc_opt);
1011 osb->osb_resv_level = parsed_options->resv_level;
1012 osb->osb_dir_resv_level = parsed_options->resv_level;
1013 if (parsed_options->dir_resv_level == -1)
1014 osb->osb_dir_resv_level = parsed_options->resv_level;
83f92318 1015 else
9be53fe6 1016 osb->osb_dir_resv_level = parsed_options->dir_resv_level;
ccd979bd 1017
9be53fe6 1018 status = ocfs2_verify_userspace_stack(osb, parsed_options);
b61817e1 1019 if (status)
f1e75d12 1020 goto out_super;
b61817e1 1021
ccd979bd
MF		 1022 sb->s_magic = OCFS2_SUPER_MAGIC;
1023
1751e8a6
LT		 1024 sb->s_flags = (sb->s_flags & ~(SB_POSIXACL | SB_NOSEC)) |
1025 ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ? SB_POSIXACL : 0);
a68979b8 1026
1751e8a6 1027 /* Hard readonly mode only if: bdev_read_only, SB_RDONLY,
ccd979bd
MF		 1028 * heartbeat=none */
1029 if (bdev_read_only(sb->s_bdev)) {
bc98a42c 1030 if (!sb_rdonly(sb)) {
ccd979bd
MF		 1031 status = -EACCES;
1032 mlog(ML_ERROR, "Readonly device detected but readonly "
1033 "mount was not specified.\n");
f1e75d12 1034 goto out_super;
ccd979bd
MF		 1035 }
1036
1037 /* You should not be able to start a local heartbeat
1038 * on a readonly device. */
1039 if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) {
1040 status = -EROFS;
1041 mlog(ML_ERROR, "Local heartbeat specified on readonly "
1042 "device.\n");
f1e75d12 1043 goto out_super;
ccd979bd
MF		 1044 }
1045
1046 status = ocfs2_check_journals_nolocks(osb);
1047 if (status < 0) {
1048 if (status == -EROFS)
1049 mlog(ML_ERROR, "Recovery required on readonly "
1050 "file system, but write access is "
1051 "unavailable.\n");
f1e75d12 1052 goto out_super;
ccd979bd
MF		 1053 }
1054
1055 ocfs2_set_ro_flag(osb, 1);
1056
619c200d
SM		 1057 printk(KERN_NOTICE "ocfs2: Readonly device (%s) detected. "
1058 "Cluster services will not be used for this mount. "
1059 "Recovery will be skipped.\n", osb->dev_str);
ccd979bd
MF		 1060 }
1061
1062 if (!ocfs2_is_hard_readonly(osb)) {
bc98a42c 1063 if (sb_rdonly(sb))
ccd979bd
MF		 1064 ocfs2_set_ro_flag(osb, 0);
1065 }
1066
c271c5c2 1067 status = ocfs2_verify_heartbeat(osb);
f1e75d12
HZO		 1068 if (status < 0)
1069 goto out_super;
c271c5c2 1070
ccd979bd
MF		 1071 osb->osb_debug_root = debugfs_create_dir(osb->uuid_str,
1072 ocfs2_debugfs_root);
ccd979bd 1073
5e7a3ed9
GKH		 1074 debugfs_create_file("fs_state", S_IFREG|S_IRUSR, osb->osb_debug_root,
1075 osb, &ocfs2_osb_debug_fops);
50397507 1076
685d03c3
JQ		 1077 if (ocfs2_meta_ecc(osb)) {
1078 ocfs2_initialize_journal_triggers(sb, osb->s_journal_triggers);
e581595e
GKH		 1079 ocfs2_blockcheck_stats_debugfs_install( &osb->osb_ecc_stats,
1080 osb->osb_debug_root);
685d03c3 1081 }
73be192b 1082
ccd979bd 1083 status = ocfs2_mount_volume(sb);
ccd979bd 1084 if (status < 0)
f1e75d12 1085 goto out_debugfs;
ccd979bd 1086
be0d93f0
AV		 1087 if (osb->root_inode)
1088 inode = igrab(osb->root_inode);
1089
ccd979bd
MF		 1090 if (!inode) {
1091 status = -EIO;
f1e75d12 1092 goto out_dismount;
ccd979bd
MF		 1093 }
1094
5f483c4a
GH		 1095 osb->osb_dev_kset = kset_create_and_add(sb->s_id, NULL,
1096 &ocfs2_kset->kobj);
1097 if (!osb->osb_dev_kset) {
1098 status = -ENOMEM;
1099 mlog(ML_ERROR, "Unable to create device kset %s.\n", sb->s_id);
f1e75d12 1100 goto out_dismount;
5f483c4a
GH		 1101 }
1102
1103 /* Create filecheck sysfs related directories/files at
1104 * /sys/fs/ocfs2/<devname>/filecheck */
1105 if (ocfs2_filecheck_create_sysfs(osb)) {
1106 status = -ENOMEM;
1107 mlog(ML_ERROR, "Unable to create filecheck sysfs directory at "
1108 "/sys/fs/ocfs2/%s/filecheck.\n", sb->s_id);
f1e75d12 1109 goto out_dismount;
5f483c4a
GH		 1110 }
1111
7b0b1332
JQ		 1112 root = d_make_root(inode);
1113 if (!root) {
1114 status = -ENOMEM;
f1e75d12 1115 goto out_dismount;
7b0b1332
JQ		 1116 }
1117
1118 sb->s_root = root;
1119
1120 ocfs2_complete_mount_recovery(osb);
1121
c271c5c2
SM		 1122 if (ocfs2_mount_local(osb))
1123 snprintf(nodestr, sizeof(nodestr), "local");
1124 else
19fdb624 1125 snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num);
c271c5c2
SM		 1126
1127 printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %s, slot %d) "
781ee3e2 1128 "with %s data mode.\n",
c271c5c2 1129 osb->dev_str, nodestr, osb->slot_num,
ccd979bd
MF		 1130 osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" :
1131 "ordered");
1132
1133 atomic_set(&osb->vol_state, VOLUME_MOUNTED);
1134 wake_up(&osb->osb_mount_event);
1135
19ece546
JK		 1136 /* Now we can initialize quotas because we can afford to wait
1137 * for cluster locks recovery now. That also means that truncation
1138 * log recovery can happen but that waits for proper quota setup */
bc98a42c 1139 if (!sb_rdonly(sb)) {
19ece546
JK		 1140 status = ocfs2_enable_quotas(osb);
1141 if (status < 0) {
1142 /* We have to err-out specially here because
1143 * s_root is already set */
1144 mlog_errno(status);
1145 atomic_set(&osb->vol_state, VOLUME_DISABLED);
1146 wake_up(&osb->osb_mount_event);
19ece546
JK		 1147 return status;
1148 }
1149 }
1150
1151 ocfs2_complete_quota_recovery(osb);
1152
1153 /* Now we wake up again for processes waiting for quotas */
1154 atomic_set(&osb->vol_state, VOLUME_MOUNTED_QUOTAS);
1155 wake_up(&osb->osb_mount_event);
1156
df152c24 1157 /* Start this when the mount is almost sure of being successful */
8b712cd5 1158 ocfs2_orphan_scan_start(osb);
df152c24 1159
ccd979bd
MF		 1160 return status;
1161
f1e75d12
HZO		 1162out_dismount:
1163 atomic_set(&osb->vol_state, VOLUME_DISABLED);
1164 wake_up(&osb->osb_mount_event);
ce2fcf15 1165 ocfs2_free_replay_slots(osb);
f1e75d12
HZO		 1166 ocfs2_dismount_volume(sb, 1);
1167 goto out;
1168
1169out_debugfs:
1170 debugfs_remove_recursive(osb->osb_debug_root);
1171out_super:
1172 ocfs2_release_system_inodes(osb);
1173 kfree(osb->recovery_map);
1174 ocfs2_delete_osb(osb);
1175 kfree(osb);
1176out:
1177 mlog_errno(status);
ccd979bd 1178
ccd979bd
MF		 1179 return status;
1180}
1181
9be53fe6
ES		 1182static int ocfs2_get_tree(struct fs_context *fc)
1183{
1184 return get_tree_bdev(fc, ocfs2_fill_super);
1185}
1186
1187static void ocfs2_free_fc(struct fs_context *fc)
1188{
1189 kfree(fc->fs_private);
1190}
1191
1192static const struct fs_context_operations ocfs2_context_ops = {
1193 .parse_param = ocfs2_parse_param,
1194 .get_tree = ocfs2_get_tree,
1195 .reconfigure = ocfs2_reconfigure,
1196 .free = ocfs2_free_fc,
1197};
1198
1199static int ocfs2_init_fs_context(struct fs_context *fc)
ccd979bd 1200{
9be53fe6
ES		 1201 struct mount_options *mopt;
1202
1203 mopt = kzalloc(sizeof(struct mount_options), GFP_KERNEL);
1204 if (!mopt)
1205 return -EINVAL;
1206
1207 mopt->commit_interval = 0;
1208 mopt->mount_opt = OCFS2_MOUNT_NOINTR;
1209 mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
1210 mopt->slot = OCFS2_INVALID_SLOT;
1211 mopt->localalloc_opt = -1;
1212 mopt->cluster_stack[0] = '\0';
1213 mopt->resv_level = OCFS2_DEFAULT_RESV_LEVEL;
1214 mopt->dir_resv_level = -1;
1215
1216 fc->fs_private = mopt;
1217 fc->ops = &ocfs2_context_ops;
1218
1219 return 0;
ccd979bd
MF		 1220}
1221
1222static struct file_system_type ocfs2_fs_type = {
1223 .owner = THIS_MODULE,
1224 .name = "ocfs2",
8ed6b237 1225 .kill_sb = kill_block_super,
1ba9da2f 1226 .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE,
9be53fe6
ES		 1227 .next = NULL,
1228 .init_fs_context = ocfs2_init_fs_context,
1229 .parameters = ocfs2_param_spec,
ccd979bd 1230};
91417705 1231MODULE_ALIAS_FS("ocfs2");
ccd979bd 1232
5297aad8
JK		 1233static int ocfs2_check_set_options(struct super_block *sb,
1234 struct mount_options *options)
1235{
9be53fe6
ES		 1236 if (options->user_stack == 0) {
1237 u32 tmp;
1238
1239 /* Ensure only one heartbeat mode */
1240 tmp = options->mount_opt & (OCFS2_MOUNT_HB_LOCAL |
1241 OCFS2_MOUNT_HB_GLOBAL |
1242 OCFS2_MOUNT_HB_NONE);
1243 if (hweight32(tmp) != 1) {
1244 mlog(ML_ERROR, "Invalid heartbeat mount options\n");
1245 return 0;
1246 }
1247 }
5297aad8
JK		 1248 if (options->mount_opt & OCFS2_MOUNT_USRQUOTA &&
1249 !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
1250 OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) {
1251 mlog(ML_ERROR, "User quotas were requested, but this "
1252 "filesystem does not have the feature enabled.\n");
1253 return 0;
1254 }
1255 if (options->mount_opt & OCFS2_MOUNT_GRPQUOTA &&
1256 !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
1257 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) {
1258 mlog(ML_ERROR, "Group quotas were requested, but this "
1259 "filesystem does not have the feature enabled.\n");
1260 return 0;
1261 }
1262 if (options->mount_opt & OCFS2_MOUNT_POSIX_ACL &&
1263 !OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR)) {
1264 mlog(ML_ERROR, "ACL support requested but extended attributes "
1265 "feature is not enabled\n");
1266 return 0;
1267 }
1268 /* No ACL setting specified? Use XATTR feature... */
1269 if (!(options->mount_opt & (OCFS2_MOUNT_POSIX_ACL |
1270 OCFS2_MOUNT_NO_POSIX_ACL))) {
1271 if (OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR))
1272 options->mount_opt |= OCFS2_MOUNT_POSIX_ACL;
1273 else
1274 options->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL;
1275 }
1276 return 1;
1277}
1278
9be53fe6 1279static int ocfs2_parse_param(struct fs_context *fc, struct fs_parameter *param)
ccd979bd 1280{
9be53fe6
ES		 1281 struct fs_parse_result result;
1282 int opt;
1283 struct mount_options *mopt = fc->fs_private;
1284 bool is_remount = (fc->purpose & FS_CONTEXT_FOR_RECONFIGURE);
1285
1286 trace_ocfs2_parse_options(is_remount, param->key);
1287
1288 opt = fs_parse(fc, ocfs2_param_spec, param, &result);
1289 if (opt < 0)
1290 return opt;
1291
1292 switch (opt) {
1293 case Opt_heartbeat:
1294 mopt->mount_opt |= result.uint_32;
1295 break;
1296 case Opt_barrier:
1297 if (result.uint_32)
1298 mopt->mount_opt |= OCFS2_MOUNT_BARRIER;
1299 else
1300 mopt->mount_opt &= ~OCFS2_MOUNT_BARRIER;
1301 break;
1302 case Opt_intr:
1303 if (result.negated)
c0123ade 1304 mopt->mount_opt |= OCFS2_MOUNT_NOINTR;
9be53fe6
ES		 1305 else
1306 mopt->mount_opt &= ~OCFS2_MOUNT_NOINTR;
1307 break;
1308 case Opt_errors:
1309 mopt->mount_opt &= ~(OCFS2_MOUNT_ERRORS_CONT |
1310 OCFS2_MOUNT_ERRORS_ROFS |
1311 OCFS2_MOUNT_ERRORS_PANIC);
1312 mopt->mount_opt |= result.uint_32;
1313 break;
1314 case Opt_data:
1315 mopt->mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK;
1316 mopt->mount_opt |= result.uint_32;
1317 break;
1318 case Opt_user_xattr:
1319 if (result.negated)
cf1d6c76 1320 mopt->mount_opt |= OCFS2_MOUNT_NOUSERXATTR;
9be53fe6
ES		 1321 else
1322 mopt->mount_opt &= ~OCFS2_MOUNT_NOUSERXATTR;
1323 break;
1324 case Opt_atime_quantum:
1325 mopt->atime_quantum = result.uint_32;
1326 break;
1327 case Opt_slot:
1328 if (result.uint_32)
1329 mopt->slot = (u16)result.uint_32;
1330 break;
1331 case Opt_commit:
1332 if (result.uint_32 == 0)
1333 mopt->commit_interval = HZ * JBD2_DEFAULT_MAX_COMMIT_AGE;
1334 else
1335 mopt->commit_interval = HZ * result.uint_32;
1336 break;
1337 case Opt_localalloc:
1338 if (result.int_32 >= 0)
1339 mopt->localalloc_opt = result.int_32;
1340 break;
1341 case Opt_localflocks:
1342 /*
1343 * Changing this during remount could race flock() requests, or
1344 * "unbalance" existing ones (e.g., a lock is taken in one mode
1345 * but dropped in the other). If users care enough to flip
1346 * locking modes during remount, we could add a "local" flag to
1347 * individual flock structures for proper tracking of state.
1348 */
1349 if (!is_remount)
1350 mopt->mount_opt |= OCFS2_MOUNT_LOCALFLOCKS;
1351 break;
1352 case Opt_stack:
1353 /* Check both that the option we were passed is of the right
1354 * length and that it is a proper string of the right length.
1355 */
1356 if (strlen(param->string) != OCFS2_STACK_LABEL_LEN) {
1357 mlog(ML_ERROR, "Invalid cluster_stack option\n");
1358 return -EINVAL;
1359 }
1360 memcpy(mopt->cluster_stack, param->string, OCFS2_STACK_LABEL_LEN);
1361 mopt->cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0';
1362 /*
1363 * Open code the memcmp here as we don't have an osb to pass
1364 * to ocfs2_userspace_stack().
1365 */
1366 if (memcmp(mopt->cluster_stack,
1367 OCFS2_CLASSIC_CLUSTER_STACK,
1368 OCFS2_STACK_LABEL_LEN))
1369 mopt->user_stack = 1;
1370 break;
1371 case Opt_inode64:
1372 mopt->mount_opt |= OCFS2_MOUNT_INODE64;
1373 break;
1374 case Opt_usrquota:
1375 mopt->mount_opt |= OCFS2_MOUNT_USRQUOTA;
1376 break;
1377 case Opt_grpquota:
1378 mopt->mount_opt |= OCFS2_MOUNT_GRPQUOTA;
1379 break;
1380 case Opt_coherency:
1381 mopt->mount_opt &= ~OCFS2_MOUNT_COHERENCY_BUFFERED;
1382 mopt->mount_opt |= result.uint_32;
1383 break;
1384 case Opt_acl:
1385 if (result.negated) {
5297aad8 1386 mopt->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL;
a68979b8 1387 mopt->mount_opt &= ~OCFS2_MOUNT_POSIX_ACL;
9be53fe6
ES		 1388 } else {
1389 mopt->mount_opt |= OCFS2_MOUNT_POSIX_ACL;
1390 mopt->mount_opt &= ~OCFS2_MOUNT_NO_POSIX_ACL;
1391 }
1392 break;
1393 case Opt_resv_level:
1394 if (is_remount)
a68979b8 1395 break;
9be53fe6
ES		 1396 if (result.uint_32 >= OCFS2_MIN_RESV_LEVEL &&
1397 result.uint_32 < OCFS2_MAX_RESV_LEVEL)
1398 mopt->resv_level = result.uint_32;
1399 break;
1400 case Opt_dir_resv_level:
1401 if (is_remount)
1dfeb768 1402 break;
9be53fe6
ES		 1403 if (result.uint_32 >= OCFS2_MIN_RESV_LEVEL &&
1404 result.uint_32 < OCFS2_MAX_RESV_LEVEL)
1405 mopt->dir_resv_level = result.uint_32;
1406 break;
1407 case Opt_journal_async_commit:
1408 mopt->mount_opt |= OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT;
1409 break;
1410 default:
1411 return -EINVAL;
2c442719
SM		 1412 }
1413
9be53fe6 1414 return 0;
ccd979bd
MF		 1415}
1416
34c80b1d 1417static int ocfs2_show_options(struct seq_file *s, struct dentry *root)
d550071c 1418{
34c80b1d 1419 struct ocfs2_super *osb = OCFS2_SB(root->d_sb);
d550071c 1420 unsigned long opts = osb->s_mount_opt;
ebcee4b5 1421 unsigned int local_alloc_megs;
d550071c 1422
2c442719
SM		 1423 if (opts & (OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL)) {
1424 seq_printf(s, ",_netdev");
1425 if (opts & OCFS2_MOUNT_HB_LOCAL)
1426 seq_printf(s, ",%s", OCFS2_HB_LOCAL);
1427 else
1428 seq_printf(s, ",%s", OCFS2_HB_GLOBAL);
1429 } else
1430 seq_printf(s, ",%s", OCFS2_HB_NONE);
d550071c
SM		 1431
1432 if (opts & OCFS2_MOUNT_NOINTR)
1433 seq_printf(s, ",nointr");
1434
1435 if (opts & OCFS2_MOUNT_DATA_WRITEBACK)
1436 seq_printf(s, ",data=writeback");
1437 else
1438 seq_printf(s, ",data=ordered");
1439
1440 if (opts & OCFS2_MOUNT_BARRIER)
1441 seq_printf(s, ",barrier=1");
1442
1443 if (opts & OCFS2_MOUNT_ERRORS_PANIC)
1444 seq_printf(s, ",errors=panic");
7d0fb914
GR		 1445 else if (opts & OCFS2_MOUNT_ERRORS_CONT)
1446 seq_printf(s, ",errors=continue");
d550071c
SM		 1447 else
1448 seq_printf(s, ",errors=remount-ro");
1449
1450 if (osb->preferred_slot != OCFS2_INVALID_SLOT)
1451 seq_printf(s, ",preferred_slot=%d", osb->preferred_slot);
1452
34c80b1d 1453 seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum);
d550071c 1454
d147b3d6
MF		 1455 if (osb->osb_commit_interval)
1456 seq_printf(s, ",commit=%u",
1457 (unsigned) (osb->osb_commit_interval / HZ));
1458
ebcee4b5 1459 local_alloc_megs = osb->local_alloc_bits >> (20 - osb->s_clustersize_bits);
6b82021b 1460 if (local_alloc_megs != ocfs2_la_default_mb(osb))
ebcee4b5 1461 seq_printf(s, ",localalloc=%d", local_alloc_megs);
2fbe8d1e 1462
53fc622b
MF		 1463 if (opts & OCFS2_MOUNT_LOCALFLOCKS)
1464 seq_printf(s, ",localflocks,");
1465
b61817e1 1466 if (osb->osb_cluster_stack[0])
a53fb69b 1467 seq_show_option(s, "cluster_stack", osb->osb_cluster_stack);
19ece546
JK		 1468 if (opts & OCFS2_MOUNT_USRQUOTA)
1469 seq_printf(s, ",usrquota");
1470 if (opts & OCFS2_MOUNT_GRPQUOTA)
1471 seq_printf(s, ",grpquota");
b61817e1 1472
7bdb0d18
TY		 1473 if (opts & OCFS2_MOUNT_COHERENCY_BUFFERED)
1474 seq_printf(s, ",coherency=buffered");
1475 else
1476 seq_printf(s, ",coherency=full");
1477
b0f73cfc
SM		 1478 if (opts & OCFS2_MOUNT_NOUSERXATTR)
1479 seq_printf(s, ",nouser_xattr");
1480 else
1481 seq_printf(s, ",user_xattr");
1482
12462f1d
JB		 1483 if (opts & OCFS2_MOUNT_INODE64)
1484 seq_printf(s, ",inode64");
1485
a68979b8
TY		 1486 if (opts & OCFS2_MOUNT_POSIX_ACL)
1487 seq_printf(s, ",acl");
1488 else
1489 seq_printf(s, ",noacl");
a68979b8 1490
d02f00cc
MF		 1491 if (osb->osb_resv_level != OCFS2_DEFAULT_RESV_LEVEL)
1492 seq_printf(s, ",resv_level=%d", osb->osb_resv_level);
1493
83f92318
MF		 1494 if (osb->osb_dir_resv_level != osb->osb_resv_level)
1495 seq_printf(s, ",dir_resv_level=%d", osb->osb_resv_level);
1496
1dfeb768 1497 if (opts & OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT)
1498 seq_printf(s, ",journal_async_commit");
1499
d550071c
SM		 1500 return 0;
1501}
1502
ccd979bd
MF		 1503static int __init ocfs2_init(void)
1504{
c18ceab0 1505 int status;
a11f7e63 1506
ccd979bd 1507 status = init_ocfs2_uptodate_cache();
342827d7
AV		 1508 if (status < 0)
1509 goto out1;
ccd979bd
MF		 1510
1511 status = ocfs2_initialize_mem_caches();
342827d7
AV		 1512 if (status < 0)
1513 goto out2;
ccd979bd 1514
ccd979bd 1515 ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL);
ccd979bd 1516
63e0c48a
JB		 1517 ocfs2_set_locking_protocol();
1518
a838e5dc
KS		 1519 register_quota_format(&ocfs2_quota_format);
1520
342827d7
AV		 1521 status = register_filesystem(&ocfs2_fs_type);
1522 if (!status)
1523 return 0;
ccd979bd 1524
342827d7 1525 unregister_quota_format(&ocfs2_quota_format);
35ddf78e 1526 debugfs_remove(ocfs2_debugfs_root);
342827d7
AV		 1527 ocfs2_free_mem_caches();
1528out2:
1529 exit_ocfs2_uptodate_cache();
1530out1:
1531 mlog_errno(status);
1532 return status;
ccd979bd
MF		 1533}
1534
1535static void __exit ocfs2_exit(void)
1536{
9e33d69f
JK		 1537 unregister_quota_format(&ocfs2_quota_format);
1538
ccd979bd
MF		 1539 debugfs_remove(ocfs2_debugfs_root);
1540
1541 ocfs2_free_mem_caches();
1542
1543 unregister_filesystem(&ocfs2_fs_type);
1544
ccd979bd 1545 exit_ocfs2_uptodate_cache();
ccd979bd
MF		 1546}
1547
1548static void ocfs2_put_super(struct super_block *sb)
1549{
32a42d39 1550 trace_ocfs2_put_super(sb);
ccd979bd
MF		 1551
1552 ocfs2_sync_blockdev(sb);
1553 ocfs2_dismount_volume(sb, 0);
ccd979bd
MF		 1554}
1555
726c3342 1556static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf)
ccd979bd
MF		 1557{
1558 struct ocfs2_super *osb;
1559 u32 numbits, freebits;
1560 int status;
1561 struct ocfs2_dinode *bm_lock;
1562 struct buffer_head *bh = NULL;
1563 struct inode *inode = NULL;
1564
32a42d39 1565 trace_ocfs2_statfs(dentry->d_sb, buf);
ccd979bd 1566
726c3342 1567 osb = OCFS2_SB(dentry->d_sb);
ccd979bd
MF		 1568
1569 inode = ocfs2_get_system_file_inode(osb,
1570 GLOBAL_BITMAP_SYSTEM_INODE,
1571 OCFS2_INVALID_SLOT);
1572 if (!inode) {
1573 mlog(ML_ERROR, "failed to get bitmap inode\n");
1574 status = -EIO;
1575 goto bail;
1576 }
1577
e63aecb6 1578 status = ocfs2_inode_lock(inode, &bh, 0);
ccd979bd
MF		 1579 if (status < 0) {
1580 mlog_errno(status);
1581 goto bail;
1582 }
1583
1584 bm_lock = (struct ocfs2_dinode *) bh->b_data;
1585
1586 numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total);
1587 freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used);
1588
1589 buf->f_type = OCFS2_SUPER_MAGIC;
726c3342 1590 buf->f_bsize = dentry->d_sb->s_blocksize;
ccd979bd
MF		 1591 buf->f_namelen = OCFS2_MAX_FILENAME_LEN;
1592 buf->f_blocks = ((sector_t) numbits) *
1593 (osb->s_clustersize >> osb->sb->s_blocksize_bits);
1594 buf->f_bfree = ((sector_t) freebits) *
1595 (osb->s_clustersize >> osb->sb->s_blocksize_bits);
1596 buf->f_bavail = buf->f_bfree;
1597 buf->f_files = numbits;
1598 buf->f_ffree = freebits;
837711f8
CL		 1599 buf->f_fsid.val[0] = crc32_le(0, osb->uuid_str, OCFS2_VOL_UUID_LEN)
1600 & 0xFFFFFFFFUL;
1601 buf->f_fsid.val[1] = crc32_le(0, osb->uuid_str + OCFS2_VOL_UUID_LEN,
1602 OCFS2_VOL_UUID_LEN) & 0xFFFFFFFFUL;
ccd979bd
MF		 1603
1604 brelse(bh);
1605
e63aecb6 1606 ocfs2_inode_unlock(inode, 0);
ccd979bd
MF		 1607 status = 0;
1608bail:
72865d92 1609 iput(inode);
ccd979bd 1610
c1e8d35e
TM		 1611 if (status)
1612 mlog_errno(status);
ccd979bd
MF		 1613
1614 return status;
1615}
1616
51cc5068 1617static void ocfs2_inode_init_once(void *data)
ccd979bd
MF		 1618{
1619 struct ocfs2_inode_info *oi = data;
1620
a35afb83
CL		 1621 oi->ip_flags = 0;
1622 oi->ip_open_count = 0;
1623 spin_lock_init(&oi->ip_lock);
1624 ocfs2_extent_map_init(&oi->vfs_inode);
1625 INIT_LIST_HEAD(&oi->ip_io_markers);
4506cfb6 1626 INIT_LIST_HEAD(&oi->ip_unwritten_list);
a35afb83 1627 oi->ip_dir_start_lookup = 0;
a35afb83 1628 init_rwsem(&oi->ip_alloc_sem);
cf1d6c76 1629 init_rwsem(&oi->ip_xattr_sem);
a35afb83 1630 mutex_init(&oi->ip_io_mutex);
ccd979bd 1631
a35afb83
CL		 1632 oi->ip_blkno = 0ULL;
1633 oi->ip_clusters = 0;
f5785283 1634 oi->ip_next_orphan = NULL;
ccd979bd 1635
4fe370af
MF		 1636 ocfs2_resv_init_once(&oi->ip_la_data_resv);
1637
a35afb83 1638 ocfs2_lock_res_init_once(&oi->ip_rw_lockres);
e63aecb6 1639 ocfs2_lock_res_init_once(&oi->ip_inode_lockres);
a35afb83 1640 ocfs2_lock_res_init_once(&oi->ip_open_lockres);
ccd979bd 1641
8cb471e8 1642 ocfs2_metadata_cache_init(INODE_CACHE(&oi->vfs_inode),
6e5a3d75 1643 &ocfs2_inode_caching_ops);
ccd979bd 1644
a35afb83 1645 inode_init_once(&oi->vfs_inode);
ccd979bd
MF		 1646}
1647
1648static int ocfs2_initialize_mem_caches(void)
1649{
1650 ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache",
fffb60f9
PJ		 1651 sizeof(struct ocfs2_inode_info),
1652 0,
1653 (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
f88c3fb8 1654 SLAB_ACCOUNT),
20c2df83 1655 ocfs2_inode_init_once);
9e33d69f
JK		 1656 ocfs2_dquot_cachep = kmem_cache_create("ocfs2_dquot_cache",
1657 sizeof(struct ocfs2_dquot),
1658 0,
46bd9449 1659 SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT,
9e33d69f
JK		 1660 NULL);
1661 ocfs2_qf_chunk_cachep = kmem_cache_create("ocfs2_qf_chunk_cache",
1662 sizeof(struct ocfs2_quota_chunk),
1663 0,
46bd9449 1664 SLAB_RECLAIM_ACCOUNT,
9e33d69f
JK		 1665 NULL);
1666 if (!ocfs2_inode_cachep || !ocfs2_dquot_cachep ||
1667 !ocfs2_qf_chunk_cachep) {
a17b485a 1668 kmem_cache_destroy(ocfs2_inode_cachep);
1669 kmem_cache_destroy(ocfs2_dquot_cachep);
1670 kmem_cache_destroy(ocfs2_qf_chunk_cachep);
ccd979bd 1671 return -ENOMEM;
9e33d69f 1672 }
ccd979bd 1673
ccd979bd
MF		 1674 return 0;
1675}
1676
1677static void ocfs2_free_mem_caches(void)
1678{
8c0a8537
KS		 1679 /*
1680 * Make sure all delayed rcu free inodes are flushed before we
1681 * destroy cache.
1682 */
1683 rcu_barrier();
a17b485a 1684 kmem_cache_destroy(ocfs2_inode_cachep);
ccd979bd 1685 ocfs2_inode_cachep = NULL;
9e33d69f 1686
a17b485a 1687 kmem_cache_destroy(ocfs2_dquot_cachep);
9e33d69f
JK		 1688 ocfs2_dquot_cachep = NULL;
1689
a17b485a 1690 kmem_cache_destroy(ocfs2_qf_chunk_cachep);
9e33d69f 1691 ocfs2_qf_chunk_cachep = NULL;
ccd979bd
MF		 1692}
1693
1694static int ocfs2_get_sector(struct super_block *sb,
1695 struct buffer_head **bh,
1696 int block,
1697 int sect_size)
1698{
1699 if (!sb_set_blocksize(sb, sect_size)) {
1700 mlog(ML_ERROR, "unable to set blocksize\n");
1701 return -EIO;
1702 }
1703
1704 *bh = sb_getblk(sb, block);
1705 if (!*bh) {
7391a294
RX		 1706 mlog_errno(-ENOMEM);
1707 return -ENOMEM;
ccd979bd
MF		 1708 }
1709 lock_buffer(*bh);
1710 if (!buffer_dirty(*bh))
1711 clear_buffer_uptodate(*bh);
1712 unlock_buffer(*bh);
54d9171d 1713 if (bh_read(*bh, 0) < 0) {
28d57d43 1714 mlog_errno(-EIO);
1715 brelse(*bh);
1716 *bh = NULL;
1717 return -EIO;
1718 }
1719
ccd979bd
MF		 1720 return 0;
1721}
1722
ccd979bd
MF		 1723static int ocfs2_mount_volume(struct super_block *sb)
1724{
1725 int status = 0;
ccd979bd
MF		 1726 struct ocfs2_super *osb = OCFS2_SB(sb);
1727
ccd979bd 1728 if (ocfs2_is_hard_readonly(osb))
0737e01d 1729 goto out;
ccd979bd 1730
5500ab4e
GH		 1731 mutex_init(&osb->obs_trim_fs_mutex);
1732
ccd979bd
MF		 1733 status = ocfs2_dlm_init(osb);
1734 if (status < 0) {
1735 mlog_errno(status);
a52370b3
GH		 1736 if (status == -EBADR && ocfs2_userspace_stack(osb))
1737 mlog(ML_ERROR, "couldn't mount because cluster name on"
1738 " disk does not match the running cluster name.\n");
0737e01d 1739 goto out;
ccd979bd
MF		 1740 }
1741
ccd979bd
MF		 1742 status = ocfs2_super_lock(osb, 1);
1743 if (status < 0) {
1744 mlog_errno(status);
0737e01d 1745 goto out_dlm;
ccd979bd 1746 }
ccd979bd
MF		 1747
1748 /* This will load up the node map and add ourselves to it. */
1749 status = ocfs2_find_slot(osb);
1750 if (status < 0) {
1751 mlog_errno(status);
0737e01d 1752 goto out_super_lock;
ccd979bd
MF		 1753 }
1754
ccd979bd
MF		 1755 /* load all node-local system inodes */
1756 status = ocfs2_init_local_system_inodes(osb);
1757 if (status < 0) {
1758 mlog_errno(status);
0737e01d 1759 goto out_super_lock;
ccd979bd
MF		 1760 }
1761
1762 status = ocfs2_check_volume(osb);
1763 if (status < 0) {
1764 mlog_errno(status);
0737e01d 1765 goto out_system_inodes;
ccd979bd
MF		 1766 }
1767
1768 status = ocfs2_truncate_log_init(osb);
0737e01d 1769 if (status < 0) {
ccd979bd 1770 mlog_errno(status);
ce2fcf15 1771 goto out_check_volume;
0737e01d 1772 }
c271c5c2 1773
0737e01d
HZO		 1774 ocfs2_super_unlock(osb, 1);
1775 return 0;
ccd979bd 1776
ce2fcf15
LZ		 1777out_check_volume:
1778 ocfs2_free_replay_slots(osb);
0737e01d
HZO		 1779out_system_inodes:
1780 if (osb->local_alloc_state == OCFS2_LA_ENABLED)
1781 ocfs2_shutdown_local_alloc(osb);
1782 ocfs2_release_system_inodes(osb);
1783 /* before journal shutdown, we should release slot_info */
1784 ocfs2_free_slot_info(osb);
1785 ocfs2_journal_shutdown(osb);
1786out_super_lock:
1787 ocfs2_super_unlock(osb, 1);
1788out_dlm:
1789 ocfs2_dlm_shutdown(osb, 0);
1790out:
ccd979bd
MF		 1791 return status;
1792}
1793
ccd979bd
MF		 1794static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err)
1795{
286eaa95 1796 int tmp, hangup_needed = 0;
ccd979bd 1797 struct ocfs2_super *osb = NULL;
99d7a882 1798 char nodestr[12];
ccd979bd 1799
32a42d39 1800 trace_ocfs2_dismount_volume(sb);
ccd979bd
MF		 1801
1802 BUG_ON(!sb);
1803 osb = OCFS2_SB(sb);
1804 BUG_ON(!osb);
1805
a0f8a9a9 1806 /* Remove file check sysfs related directories/files,
5f483c4a
GH		 1807 * and wait for the pending file check operations */
1808 ocfs2_filecheck_remove_sysfs(osb);
1809
1810 kset_unregister(osb->osb_dev_kset);
1811
692684e1
SM		 1812 /* Orphan scan should be stopped as early as possible */
1813 ocfs2_orphan_scan_stop(osb);
1814
fcaf3b26
JK		 1815 /* Stop quota recovery so that we can disable quotas */
1816 ocfs2_recovery_disable_quota(osb);
1817
19ece546
JK		 1818 ocfs2_disable_quotas(osb);
1819
e3a767b6
JK		 1820 /* All dquots should be freed by now */
1821 WARN_ON(!llist_empty(&osb->dquot_drop_list));
1822 /* Wait for worker to be done with the work structure in osb */
1823 cancel_work_sync(&osb->dquot_drop_work);
1824
ccd979bd
MF		 1825 ocfs2_shutdown_local_alloc(osb);
1826
b253bfd8
X		 1827 ocfs2_truncate_log_shutdown(osb);
1828
553abd04
JB		 1829 /* This will disable recovery and flush any recovery work. */
1830 ocfs2_recovery_exit(osb);
ccd979bd 1831
ccd979bd
MF		 1832 ocfs2_sync_blockdev(sb);
1833
374a263e
TM		 1834 ocfs2_purge_refcount_trees(osb);
1835
4670c46d
JB		 1836 /* No cluster connection means we've failed during mount, so skip
1837 * all the steps which depended on that to complete. */
1838 if (osb->cconn) {
ccd979bd
MF		 1839 tmp = ocfs2_super_lock(osb, 1);
1840 if (tmp < 0) {
1841 mlog_errno(tmp);
1842 return;
1843 }
19b613d4 1844 }
ccd979bd 1845
19b613d4
MF		 1846 if (osb->slot_num != OCFS2_INVALID_SLOT)
1847 ocfs2_put_slot(osb);
ccd979bd 1848
4670c46d 1849 if (osb->cconn)
ccd979bd 1850 ocfs2_super_unlock(osb, 1);
ccd979bd
MF		 1851
1852 ocfs2_release_system_inodes(osb);
1853
da5e7c87
VV		 1854 ocfs2_journal_shutdown(osb);
1855
6953b4c0 1856 /*
6953b4c0
JB		 1857 * If we're dismounting due to mount error, mount.ocfs2 will clean
1858 * up heartbeat. If we're a local mount, there is no heartbeat.
1859 * If we failed before we got a uuid_str yet, we can't stop
1860 * heartbeat. Otherwise, do it.
1861 */
03efed8a
TY		 1862 if (!mnt_err && !ocfs2_mount_local(osb) && osb->uuid_str &&
1863 !ocfs2_is_hard_readonly(osb))
286eaa95
JB		 1864 hangup_needed = 1;
1865
550842cc 1866 ocfs2_dlm_shutdown(osb, hangup_needed);
286eaa95 1867
73be192b 1868 ocfs2_blockcheck_stats_debugfs_remove(&osb->osb_ecc_stats);
5e7a3ed9 1869 debugfs_remove_recursive(osb->osb_debug_root);
286eaa95
JB		 1870
1871 if (hangup_needed)
6953b4c0 1872 ocfs2_cluster_hangup(osb->uuid_str, strlen(osb->uuid_str));
ccd979bd
MF		 1873
1874 atomic_set(&osb->vol_state, VOLUME_DISMOUNTED);
1875
c271c5c2
SM		 1876 if (ocfs2_mount_local(osb))
1877 snprintf(nodestr, sizeof(nodestr), "local");
1878 else
19fdb624 1879 snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num);
c271c5c2
SM		 1880
1881 printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %s)\n",
1882 osb->dev_str, nodestr);
ccd979bd
MF		 1883
1884 ocfs2_delete_osb(osb);
1885 kfree(osb);
1886 sb->s_dev = 0;
1887 sb->s_fs_info = NULL;
1888}
1889
1890static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid,
1891 unsigned uuid_bytes)
1892{
1893 int i, ret;
1894 char *ptr;
1895
1896 BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN);
1897
cd861280 1898 osb->uuid_str = kzalloc(OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL);
ccd979bd
MF		 1899 if (osb->uuid_str == NULL)
1900 return -ENOMEM;
1901
ccd979bd
MF		 1902 for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) {
1903 /* print with null */
1904 ret = snprintf(ptr, 3, "%02X", uuid[i]);
1905 if (ret != 2) /* drop super cleans up */
1906 return -EINVAL;
1907 /* then only advance past the last char */
1908 ptr += 2;
1909 }
1910
1911 return 0;
1912}
1913
3bdb8efd
PL		 1914/* Make sure entire volume is addressable by our journal. Requires
1915 osb_clusters_at_boot to be valid and for the journal to have been
1916 initialized by ocfs2_journal_init(). */
1917static int ocfs2_journal_addressable(struct ocfs2_super *osb)
1918{
1919 int status = 0;
1920 u64 max_block =
1921 ocfs2_clusters_to_blocks(osb->sb,
1922 osb->osb_clusters_at_boot) - 1;
1923
1924 /* 32-bit block number is always OK. */
1925 if (max_block <= (u32)~0ULL)
1926 goto out;
1927
1928 /* Volume is "huge", so see if our journal is new enough to
1929 support it. */
1930 if (!(OCFS2_HAS_COMPAT_FEATURE(osb->sb,
1931 OCFS2_FEATURE_COMPAT_JBD2_SB) &&
1932 jbd2_journal_check_used_features(osb->journal->j_journal, 0, 0,
1933 JBD2_FEATURE_INCOMPAT_64BIT))) {
1934 mlog(ML_ERROR, "The journal cannot address the entire volume. "
1935 "Enable the 'block64' journal option with tunefs.ocfs2");
1936 status = -EFBIG;
1937 goto out;
1938 }
1939
1940 out:
1941 return status;
1942}
1943
ccd979bd
MF		 1944static int ocfs2_initialize_super(struct super_block *sb,
1945 struct buffer_head *bh,
73be192b
JB		 1946 int sector_size,
1947 struct ocfs2_blockcheck_stats *stats)
ccd979bd 1948{
bddb8eb3 1949 int status;
5a254031
MF		 1950 int i, cbits, bbits;
1951 struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data;
ccd979bd 1952 struct inode *inode = NULL;
ccd979bd 1953 struct ocfs2_super *osb;
3bdb8efd 1954 u64 total_blocks;
ccd979bd 1955
cd861280 1956 osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL);
ccd979bd
MF		 1957 if (!osb) {
1958 status = -ENOMEM;
1959 mlog_errno(status);
a8a986db 1960 goto out;
ccd979bd
MF		 1961 }
1962
1963 sb->s_fs_info = osb;
1964 sb->s_op = &ocfs2_sops;
ba87167c 1965 sb->s_d_op = &ocfs2_dentry_ops;
ccd979bd 1966 sb->s_export_op = &ocfs2_export_ops;
664dbd5f 1967 sb->s_qcop = &dquot_quotactl_sysfile_ops;
19ece546 1968 sb->dq_op = &ocfs2_quota_operations;
1c92ec67 1969 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
cf1d6c76 1970 sb->s_xattr = ocfs2_xattr_handlers;
e0dceaf0 1971 sb->s_time_gran = 1;
1751e8a6 1972 sb->s_flags |= SB_NOATIME;
ccd979bd 1973 /* this is needed to support O_LARGEFILE */
5a254031
MF		 1974 cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits);
1975 bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits);
1976 sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits);
a4af51ce
KO		 1977 super_set_uuid(sb, di->id2.i_super.s_uuid,
1978 sizeof(di->id2.i_super.s_uuid));
ccd979bd 1979
9b7895ef
MF		 1980 osb->osb_dx_mask = (1 << (cbits - bbits)) - 1;
1981
1982 for (i = 0; i < 3; i++)
1983 osb->osb_dx_seed[i] = le32_to_cpu(di->id2.i_super.s_dx_seed[i]);
1984 osb->osb_dx_seed[3] = le32_to_cpu(di->id2.i_super.s_uuid_hash);
1985
ccd979bd 1986 osb->sb = sb;
ccd979bd 1987 osb->s_sectsize_bits = blksize_bits(sector_size);
ebdec83b 1988 BUG_ON(!osb->s_sectsize_bits);
ccd979bd 1989
34d024f8
MF		 1990 spin_lock_init(&osb->dc_task_lock);
1991 init_waitqueue_head(&osb->dc_event);
1992 osb->dc_work_sequence = 0;
1993 osb->dc_wake_sequence = 0;
ccd979bd
MF		 1994 INIT_LIST_HEAD(&osb->blocked_lock_list);
1995 osb->blocked_lock_count = 0;
ccd979bd 1996 spin_lock_init(&osb->osb_lock);
c8b9cf9a 1997 spin_lock_init(&osb->osb_xattr_lock);
b89c5428 1998 ocfs2_init_steal_slots(osb);
ccd979bd 1999
43b10a20 2000 mutex_init(&osb->system_file_mutex);
2001
ccd979bd
MF		 2002 atomic_set(&osb->alloc_stats.moves, 0);
2003 atomic_set(&osb->alloc_stats.local_data, 0);
2004 atomic_set(&osb->alloc_stats.bitmap_data, 0);
2005 atomic_set(&osb->alloc_stats.bg_allocs, 0);
2006 atomic_set(&osb->alloc_stats.bg_extends, 0);
2007
73be192b
JB		 2008 /* Copy the blockcheck stats from the superblock probe */
2009 osb->osb_ecc_stats = *stats;
2010
ccd979bd
MF		 2011 ocfs2_init_node_maps(osb);
2012
2013 snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u",
2014 MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev));
2015
75d9bbc7
GR		 2016 osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots);
2017 if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) {
2018 mlog(ML_ERROR, "Invalid number of node slots (%u)\n",
2019 osb->max_slots);
2020 status = -EINVAL;
a8a986db 2021 goto out;
75d9bbc7 2022 }
75d9bbc7 2023
8b712cd5
JM		 2024 ocfs2_orphan_scan_init(osb);
2025
553abd04
JB		 2026 status = ocfs2_recovery_init(osb);
2027 if (status) {
2028 mlog(ML_ERROR, "Unable to initialize recovery state\n");
2029 mlog_errno(status);
a8a986db 2030 goto out;
553abd04 2031 }
ccd979bd
MF		 2032
2033 init_waitqueue_head(&osb->checkpoint_event);
ccd979bd 2034
7f1a37e3
TY		 2035 osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
2036
ccd979bd
MF		 2037 osb->slot_num = OCFS2_INVALID_SLOT;
2038
8154da3d
TY		 2039 osb->s_xattr_inline_size = le16_to_cpu(
2040 di->id2.i_super.s_xattr_inline_size);
fdd77704 2041
ccd979bd
MF		 2042 osb->local_alloc_state = OCFS2_LA_UNUSED;
2043 osb->local_alloc_bh = NULL;
9c7af40b 2044 INIT_DELAYED_WORK(&osb->la_enable_wq, ocfs2_la_enable_worker);
ccd979bd 2045
ccd979bd
MF		 2046 init_waitqueue_head(&osb->osb_mount_event);
2047
54bd3f7c 2048 ocfs2_resmap_init(osb, &osb->osb_la_resmap);
d02f00cc 2049
ccd979bd
MF		 2050 osb->vol_label = kmalloc(OCFS2_MAX_VOL_LABEL_LEN, GFP_KERNEL);
2051 if (!osb->vol_label) {
2052 mlog(ML_ERROR, "unable to alloc vol label\n");
2053 status = -ENOMEM;
a8a986db 2054 goto out_recovery_map;
ccd979bd
MF		 2055 }
2056
539d8264
SM		 2057 osb->slot_recovery_generations =
2058 kcalloc(osb->max_slots, sizeof(*osb->slot_recovery_generations),
2059 GFP_KERNEL);
2060 if (!osb->slot_recovery_generations) {
2061 status = -ENOMEM;
2062 mlog_errno(status);
a8a986db 2063 goto out_vol_label;
539d8264
SM		 2064 }
2065
b4df6ed8
MF		 2066 init_waitqueue_head(&osb->osb_wipe_event);
2067 osb->osb_orphan_wipes = kcalloc(osb->max_slots,
2068 sizeof(*osb->osb_orphan_wipes),
2069 GFP_KERNEL);
2070 if (!osb->osb_orphan_wipes) {
2071 status = -ENOMEM;
2072 mlog_errno(status);
a8a986db 2073 goto out_slot_recovery_gen;
b4df6ed8
MF		 2074 }
2075
374a263e
TM		 2076 osb->osb_rf_lock_tree = RB_ROOT;
2077
ccd979bd
MF		 2078 osb->s_feature_compat =
2079 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_compat);
2080 osb->s_feature_ro_compat =
2081 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_ro_compat);
2082 osb->s_feature_incompat =
2083 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_incompat);
2084
2085 if ((i = OCFS2_HAS_INCOMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_INCOMPAT_SUPP))) {
2086 mlog(ML_ERROR, "couldn't mount because of unsupported "
2087 "optional features (%x).\n", i);
2088 status = -EINVAL;
a8a986db 2089 goto out_orphan_wipes;
ccd979bd 2090 }
bc98a42c 2091 if (!sb_rdonly(osb->sb) && (i = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP))) {
ccd979bd
MF		 2092 mlog(ML_ERROR, "couldn't mount RDWR because of "
2093 "unsupported optional features (%x).\n", i);
2094 status = -EINVAL;
a8a986db 2095 goto out_orphan_wipes;
ccd979bd
MF		 2096 }
2097
98f486f2 2098 if (ocfs2_clusterinfo_valid(osb)) {
b15fa922
VV		 2099 /*
2100 * ci_stack and ci_cluster in ocfs2_cluster_info may not be null
2101 * terminated, so make sure no overflow happens here by using
2102 * memcpy. Destination strings will always be null terminated
2103 * because osb is allocated using kzalloc.
2104 */
98f486f2
SM		 2105 osb->osb_stackflags =
2106 OCFS2_RAW_SB(di)->s_cluster_info.ci_stackflags;
b15fa922 2107 memcpy(osb->osb_cluster_stack,
b61817e1 2108 OCFS2_RAW_SB(di)->s_cluster_info.ci_stack,
b15fa922 2109 OCFS2_STACK_LABEL_LEN);
b61817e1
JB		 2110 if (strlen(osb->osb_cluster_stack) != OCFS2_STACK_LABEL_LEN) {
2111 mlog(ML_ERROR,
2112 "couldn't mount because of an invalid "
2113 "cluster stack label (%s) \n",
2114 osb->osb_cluster_stack);
2115 status = -EINVAL;
a8a986db 2116 goto out_orphan_wipes;
b61817e1 2117 }
b15fa922 2118 memcpy(osb->osb_cluster_name,
c74a3bdd 2119 OCFS2_RAW_SB(di)->s_cluster_info.ci_cluster,
b15fa922 2120 OCFS2_CLUSTER_NAME_LEN);
b61817e1
JB		 2121 } else {
2122 /* The empty string is identical with classic tools that
2123 * don't know about s_cluster_info. */
2124 osb->osb_cluster_stack[0] = '\0';
2125 }
2126
ccd979bd
MF		 2127 get_random_bytes(&osb->s_next_generation, sizeof(u32));
2128
bb20b31d
HZO		 2129 /*
2130 * FIXME
2131 * This should be done in ocfs2_journal_init(), but any inode
2132 * writes back operation will cause the filesystem to crash.
2133 */
2134 status = ocfs2_journal_alloc(osb);
2135 if (status < 0)
a8a986db 2136 goto out_orphan_wipes;
bb20b31d 2137
e3a767b6
JK		 2138 INIT_WORK(&osb->dquot_drop_work, ocfs2_drop_dquot_refs);
2139 init_llist_head(&osb->dquot_drop_list);
2140
ccd979bd
MF		 2141 /* get some pseudo constants for clustersize bits */
2142 osb->s_clustersize_bits =
2143 le32_to_cpu(di->id2.i_super.s_clustersize_bits);
2144 osb->s_clustersize = 1 << osb->s_clustersize_bits;
ccd979bd
MF		 2145
2146 if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE ||
2147 osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) {
2148 mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n",
2149 osb->s_clustersize);
2150 status = -EINVAL;
a8a986db 2151 goto out_journal;
ccd979bd
MF		 2152 }
2153
3bdb8efd
PL		 2154 total_blocks = ocfs2_clusters_to_blocks(osb->sb,
2155 le32_to_cpu(di->i_clusters));
2156
2157 status = generic_check_addressable(osb->sb->s_blocksize_bits,
2158 total_blocks);
2159 if (status) {
2160 mlog(ML_ERROR, "Volume too large "
2161 "to mount safely on this system");
2162 status = -EFBIG;
a8a986db 2163 goto out_journal;
ccd979bd
MF		 2164 }
2165
2166 if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid,
2167 sizeof(di->id2.i_super.s_uuid))) {
2168 mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n");
2169 status = -ENOMEM;
a8a986db 2170 goto out_journal;
ccd979bd
MF		 2171 }
2172
c97e21fe 2173 strscpy(osb->vol_label, di->id2.i_super.s_label,
69201bb1 2174 OCFS2_MAX_VOL_LABEL_LEN);
ccd979bd
MF		 2175 osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno);
2176 osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno);
2177 osb->first_cluster_group_blkno =
2178 le64_to_cpu(di->id2.i_super.s_first_cluster_group);
2179 osb->fs_generation = le32_to_cpu(di->i_fs_generation);
cf1d6c76 2180 osb->uuid_hash = le32_to_cpu(di->id2.i_super.s_uuid_hash);
32a42d39
TM		 2181 trace_ocfs2_initialize_super(osb->vol_label, osb->uuid_str,
2182 (unsigned long long)osb->root_blkno,
2183 (unsigned long long)osb->system_dir_blkno,
2184 osb->s_clustersize_bits);
ccd979bd
MF		 2185
2186 osb->osb_dlm_debug = ocfs2_new_dlm_debug();
2187 if (!osb->osb_dlm_debug) {
2188 status = -ENOMEM;
2189 mlog_errno(status);
a8a986db 2190 goto out_uuid_str;
ccd979bd
MF		 2191 }
2192
2193 atomic_set(&osb->vol_state, VOLUME_INIT);
2194
2195 /* load root, system_dir, and all global system inodes */
2196 status = ocfs2_init_global_system_inodes(osb);
2197 if (status < 0) {
2198 mlog_errno(status);
a8a986db 2199 goto out_dlm_out;
ccd979bd
MF		 2200 }
2201
2202 /*
2203 * global bitmap
2204 */
2205 inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE,
2206 OCFS2_INVALID_SLOT);
2207 if (!inode) {
2208 status = -EINVAL;
2209 mlog_errno(status);
a8a986db 2210 goto out_system_inodes;
ccd979bd
MF		 2211 }
2212
2213 osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno;
6b82021b 2214 osb->osb_clusters_at_boot = OCFS2_I(inode)->ip_clusters;
ccd979bd 2215 iput(inode);
ccd979bd 2216
8571882c
TM		 2217 osb->bitmap_cpg = ocfs2_group_bitmap_size(sb, 0,
2218 osb->s_feature_incompat) * 8;
ccd979bd
MF		 2219
2220 status = ocfs2_init_slot_info(osb);
2221 if (status < 0) {
2222 mlog_errno(status);
a8a986db 2223 goto out_system_inodes;
ccd979bd
MF		 2224 }
2225
44be9756 2226 osb->ocfs2_wq = alloc_ordered_workqueue("ocfs2_wq", WQ_MEM_RECLAIM);
35ddf78e 2227 if (!osb->ocfs2_wq) {
2228 status = -ENOMEM;
2229 mlog_errno(status);
a8a986db 2230 goto out_slot_info;
35ddf78e 2231 }
2232
a8a986db
HZO		 2233 return status;
2234
2235out_slot_info:
2236 ocfs2_free_slot_info(osb);
2237out_system_inodes:
2238 ocfs2_release_system_inodes(osb);
2239out_dlm_out:
2240 ocfs2_put_dlm_debug(osb->osb_dlm_debug);
2241out_uuid_str:
2242 kfree(osb->uuid_str);
2243out_journal:
2244 kfree(osb->journal);
2245out_orphan_wipes:
2246 kfree(osb->osb_orphan_wipes);
2247out_slot_recovery_gen:
2248 kfree(osb->slot_recovery_generations);
2249out_vol_label:
2250 kfree(osb->vol_label);
2251out_recovery_map:
2252 kfree(osb->recovery_map);
2253out:
2254 kfree(osb);
2255 sb->s_fs_info = NULL;
ccd979bd
MF		 2256 return status;
2257}
2258
2259/*
2260 * will return: -EAGAIN if it is ok to keep searching for superblocks
2261 * -EINVAL if there is a bad superblock
2262 * 0 on success
2263 */
2264static int ocfs2_verify_volume(struct ocfs2_dinode *di,
2265 struct buffer_head *bh,
73be192b
JB		 2266 u32 blksz,
2267 struct ocfs2_blockcheck_stats *stats)
ccd979bd
MF		 2268{
2269 int status = -EAGAIN;
23aab037 2270 u32 blksz_bits;
ccd979bd 2271
ccd979bd
MF		 2272 if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE,
2273 strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) {
d030cc97
JB		 2274 /* We have to do a raw check of the feature here */
2275 if (le32_to_cpu(di->id2.i_super.s_feature_incompat) &
2276 OCFS2_FEATURE_INCOMPAT_META_ECC) {
2277 status = ocfs2_block_check_validate(bh->b_data,
2278 bh->b_size,
73be192b
JB		 2279 &di->i_check,
2280 stats);
d030cc97
JB		 2281 if (status)
2282 goto out;
2283 }
ccd979bd 2284 status = -EINVAL;
23aab037
DA		 2285 /* Acceptable block sizes are 512 bytes, 1K, 2K and 4K. */
2286 blksz_bits = le32_to_cpu(di->id2.i_super.s_blocksize_bits);
2287 if (blksz_bits < 9 || blksz_bits > 12) {
ccd979bd 2288 mlog(ML_ERROR, "found superblock with incorrect block "
23aab037
DA		 2289 "size bits: found %u, should be 9, 10, 11, or 12\n",
2290 blksz_bits);
f921da2c 2291 } else if ((1 << blksz_bits) != blksz) {
23aab037
DA		 2292 mlog(ML_ERROR, "found superblock with incorrect block "
2293 "size: found %u, should be %u\n", 1 << blksz_bits, blksz);
ccd979bd
MF		 2294 } else if (le16_to_cpu(di->id2.i_super.s_major_rev_level) !=
2295 OCFS2_MAJOR_REV_LEVEL ||
2296 le16_to_cpu(di->id2.i_super.s_minor_rev_level) !=
2297 OCFS2_MINOR_REV_LEVEL) {
2298 mlog(ML_ERROR, "found superblock with bad version: "
2299 "found %u.%u, should be %u.%u\n",
2300 le16_to_cpu(di->id2.i_super.s_major_rev_level),
2301 le16_to_cpu(di->id2.i_super.s_minor_rev_level),
2302 OCFS2_MAJOR_REV_LEVEL,
2303 OCFS2_MINOR_REV_LEVEL);
2304 } else if (bh->b_blocknr != le64_to_cpu(di->i_blkno)) {
2305 mlog(ML_ERROR, "bad block number on superblock: "
b0697053 2306 "found %llu, should be %llu\n",
1ca1a111 2307 (unsigned long long)le64_to_cpu(di->i_blkno),
b0697053 2308 (unsigned long long)bh->b_blocknr);
ccd979bd
MF		 2309 } else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 ||
2310 le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) {
7f86b294 2311 mlog(ML_ERROR, "bad cluster size bit found: %u\n",
2312 le32_to_cpu(di->id2.i_super.s_clustersize_bits));
ccd979bd
MF		 2313 } else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) {
2314 mlog(ML_ERROR, "bad root_blkno: 0\n");
2315 } else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) {
2316 mlog(ML_ERROR, "bad system_dir_blkno: 0\n");
2317 } else if (le16_to_cpu(di->id2.i_super.s_max_slots) > OCFS2_MAX_SLOTS) {
2318 mlog(ML_ERROR,
2319 "Superblock slots found greater than file system "
2320 "maximum: found %u, max %u\n",
2321 le16_to_cpu(di->id2.i_super.s_max_slots),
2322 OCFS2_MAX_SLOTS);
2323 } else {
2324 /* found it! */
2325 status = 0;
2326 }
2327 }
2328
d030cc97 2329out:
c1e8d35e
TM		 2330 if (status && status != -EAGAIN)
2331 mlog_errno(status);
ccd979bd
MF		 2332 return status;
2333}
2334
2335static int ocfs2_check_volume(struct ocfs2_super *osb)
2336{
bddb8eb3 2337 int status;
ccd979bd 2338 int dirty;
c271c5c2 2339 int local;
ccd979bd
MF		 2340 struct ocfs2_dinode *local_alloc = NULL; /* only used if we
2341 * recover
2342 * ourselves. */
2343
ccd979bd 2344 /* Init our journal object. */
da5e7c87 2345 status = ocfs2_journal_init(osb, &dirty);
ccd979bd
MF		 2346 if (status < 0) {
2347 mlog(ML_ERROR, "Could not initialize journal!\n");
2348 goto finally;
2349 }
2350
3bdb8efd
PL		 2351 /* Now that journal has been initialized, check to make sure
2352 entire volume is addressable. */
2353 status = ocfs2_journal_addressable(osb);
2354 if (status)
2355 goto finally;
2356
ccd979bd
MF		 2357 /* If the journal was unmounted cleanly then we don't want to
2358 * recover anything. Otherwise, journal_load will do that
2359 * dirty work for us :) */
2360 if (!dirty) {
2361 status = ocfs2_journal_wipe(osb->journal, 0);
2362 if (status < 0) {
2363 mlog_errno(status);
2364 goto finally;
2365 }
2366 } else {
619c200d
SM		 2367 printk(KERN_NOTICE "ocfs2: File system on device (%s) was not "
2368 "unmounted cleanly, recovering it.\n", osb->dev_str);
ccd979bd
MF		 2369 }
2370
c271c5c2
SM		 2371 local = ocfs2_mount_local(osb);
2372
ccd979bd 2373 /* will play back anything left in the journal. */
539d8264 2374 status = ocfs2_journal_load(osb->journal, local, dirty);
01af4820
WW		 2375 if (status < 0) {
2376 mlog(ML_ERROR, "ocfs2 journal load failed! %d\n", status);
2377 goto finally;
2378 }
ccd979bd 2379
1dfeb768 2380 if (osb->s_mount_opt & OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT)
2381 jbd2_journal_set_features(osb->journal->j_journal,
2382 JBD2_FEATURE_COMPAT_CHECKSUM, 0,
2383 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT);
2384 else
2385 jbd2_journal_clear_features(osb->journal->j_journal,
2386 JBD2_FEATURE_COMPAT_CHECKSUM, 0,
2387 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT);
2388
ccd979bd
MF		 2389 if (dirty) {
2390 /* recover my local alloc if we didn't unmount cleanly. */
2391 status = ocfs2_begin_local_alloc_recovery(osb,
2392 osb->slot_num,
2393 &local_alloc);
2394 if (status < 0) {
2395 mlog_errno(status);
2396 goto finally;
2397 }
2398 /* we complete the recovery process after we've marked
2399 * ourselves as mounted. */
2400 }
2401
ccd979bd
MF		 2402 status = ocfs2_load_local_alloc(osb);
2403 if (status < 0) {
2404 mlog_errno(status);
2405 goto finally;
2406 }
2407
2408 if (dirty) {
2409 /* Recovery will be completed after we've mounted the
2410 * rest of the volume. */
ccd979bd
MF		 2411 osb->local_alloc_copy = local_alloc;
2412 local_alloc = NULL;
2413 }
2414
2415 /* go through each journal, trylock it and if you get the
2416 * lock, and it's marked as dirty, set the bit in the recover
2417 * map and launch a recovery thread for it. */
2418 status = ocfs2_mark_dead_nodes(osb);
9140db04
SE		 2419 if (status < 0) {
2420 mlog_errno(status);
2421 goto finally;
2422 }
2423
2424 status = ocfs2_compute_replay_slots(osb);
ccd979bd
MF		 2425 if (status < 0)
2426 mlog_errno(status);
2427
2428finally:
d787ab09 2429 kfree(local_alloc);
ccd979bd 2430
c1e8d35e
TM		 2431 if (status)
2432 mlog_errno(status);
ccd979bd
MF		 2433 return status;
2434}
2435
2436/*
2437 * The routine gets called from dismount or close whenever a dismount on
2438 * volume is requested and the osb open count becomes 1.
2439 * It will remove the osb from the global list and also free up all the
2440 * initialized resources and fileobject.
2441 */
2442static void ocfs2_delete_osb(struct ocfs2_super *osb)
2443{
ccd979bd
MF		 2444 /* This function assumes that the caller has the main osb resource */
2445
35ddf78e 2446 /* ocfs2_initializer_super have already created this workqueue */
23e0813a 2447 if (osb->ocfs2_wq)
35ddf78e 2448 destroy_workqueue(osb->ocfs2_wq);
35ddf78e 2449
8e8a4603 2450 ocfs2_free_slot_info(osb);
ccd979bd 2451
b4df6ed8 2452 kfree(osb->osb_orphan_wipes);
539d8264 2453 kfree(osb->slot_recovery_generations);
bb20b31d
HZO		 2454 /* FIXME
2455 * This belongs in journal shutdown, but because we have to
2456 * allocate osb->journal at the middle of ocfs2_initialize_super(),
2457 * we free it here.
2458 */
2459 kfree(osb->journal);
d787ab09 2460 kfree(osb->local_alloc_copy);
ccd979bd 2461 kfree(osb->uuid_str);
f13a568e 2462 kfree(osb->vol_label);
ccd979bd
MF		 2463 ocfs2_put_dlm_debug(osb->osb_dlm_debug);
2464 memset(osb, 0, sizeof(struct ocfs2_super));
ccd979bd
MF		 2465}
2466
7d0fb914
GR		 2467/* Depending on the mount option passed, perform one of the following:
2468 * Put OCFS2 into a readonly state (default)
2469 * Return EIO so that only the process errs
2470 * Fix the error as if fsck.ocfs2 -y
2471 * panic
2472 */
2473static int ocfs2_handle_error(struct super_block *sb)
ccd979bd
MF		 2474{
2475 struct ocfs2_super *osb = OCFS2_SB(sb);
7d0fb914 2476 int rv = 0;
ccd979bd
MF		 2477
2478 ocfs2_set_osb_flag(osb, OCFS2_OSB_ERROR_FS);
7d0fb914
GR		 2479 pr_crit("On-disk corruption discovered. "
2480 "Please run fsck.ocfs2 once the filesystem is unmounted.\n");
ccd979bd 2481
7d0fb914
GR		 2482 if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_PANIC) {
2483 panic("OCFS2: (device %s): panic forced after error\n",
2484 sb->s_id);
2485 } else if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_CONT) {
2486 pr_crit("OCFS2: Returning error to the calling process.\n");
2487 rv = -EIO;
2488 } else { /* default option */
2489 rv = -EROFS;
bc98a42c 2490 if (sb_rdonly(sb) && (ocfs2_is_soft_readonly(osb) || ocfs2_is_hard_readonly(osb)))
7d0fb914
GR		 2491 return rv;
2492
2493 pr_crit("OCFS2: File system is now read-only.\n");
1751e8a6 2494 sb->s_flags |= SB_RDONLY;
7d0fb914
GR		 2495 ocfs2_set_ro_flag(osb, 0);
2496 }
2497
2498 return rv;
ccd979bd
MF		 2499}
2500
7d0fb914 2501int __ocfs2_error(struct super_block *sb, const char *function,
1543306e 2502 const char *fmt, ...)
ccd979bd 2503{
1543306e 2504 struct va_format vaf;
ccd979bd
MF		 2505 va_list args;
2506
2507 va_start(args, fmt);
1543306e
JP		 2508 vaf.fmt = fmt;
2509 vaf.va = &args;
ccd979bd
MF		 2510
2511 /* Not using mlog here because we want to show the actual
2512 * function the error came from. */
7ecef14a 2513 printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %pV",
1543306e
JP		 2514 sb->s_id, function, &vaf);
2515
2516 va_end(args);
ccd979bd 2517
7d0fb914 2518 return ocfs2_handle_error(sb);
ccd979bd
MF		 2519}
2520
2521/* Handle critical errors. This is intentionally more drastic than
2522 * ocfs2_handle_error, so we only use for things like journal errors,
2523 * etc. */
1543306e 2524void __ocfs2_abort(struct super_block *sb, const char *function,
ccd979bd
MF		 2525 const char *fmt, ...)
2526{
1543306e 2527 struct va_format vaf;
ccd979bd
MF		 2528 va_list args;
2529
2530 va_start(args, fmt);
ccd979bd 2531
1543306e
JP		 2532 vaf.fmt = fmt;
2533 vaf.va = &args;
2534
7ecef14a 2535 printk(KERN_CRIT "OCFS2: abort (device %s): %s: %pV",
1543306e
JP		 2536 sb->s_id, function, &vaf);
2537
2538 va_end(args);
ccd979bd
MF		 2539
2540 /* We don't have the cluster support yet to go straight to
2541 * hard readonly in here. Until then, we want to keep
2542 * ocfs2_abort() so that we can at least mark critical
2543 * errors.
2544 *
2545 * TODO: This should abort the journal and alert other nodes
2546 * that our slot needs recovery. */
2547
2548 /* Force a panic(). This stinks, but it's better than letting
2549 * things continue without having a proper hard readonly
2550 * here. */
a2f2ddbf
SM		 2551 if (!ocfs2_mount_local(OCFS2_SB(sb)))
2552 OCFS2_SB(sb)->s_mount_opt |= OCFS2_MOUNT_ERRORS_PANIC;
ccd979bd
MF		 2553 ocfs2_handle_error(sb);
2554}
2555
e4b963f1
JB		 2556/*
2557 * Void signal blockers, because in-kernel sigprocmask() only fails
2558 * when SIG_* is wrong.
2559 */
2560void ocfs2_block_signals(sigset_t *oldset)
2561{
2562 int rc;
2563 sigset_t blocked;
2564
2565 sigfillset(&blocked);
2566 rc = sigprocmask(SIG_BLOCK, &blocked, oldset);
2567 BUG_ON(rc);
2568}
2569
2570void ocfs2_unblock_signals(sigset_t *oldset)
2571{
2572 int rc = sigprocmask(SIG_SETMASK, oldset, NULL);
2573 BUG_ON(rc);
2574}
2575
ccd979bd
MF		 2576module_init(ocfs2_init);
2577module_exit(ocfs2_exit);
Linux 6.x block layer and io_uring tree(s)