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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> | |
31 | #include <linux/utsname.h> | |
32 | #include <linux/init.h> | |
33 | #include <linux/random.h> | |
34 | #include <linux/statfs.h> | |
35 | #include <linux/moduleparam.h> | |
36 | #include <linux/blkdev.h> | |
37 | #include <linux/socket.h> | |
38 | #include <linux/inet.h> | |
39 | #include <linux/parser.h> | |
40 | #include <linux/crc32.h> | |
41 | #include <linux/debugfs.h> | |
d550071c | 42 | #include <linux/mount.h> |
6953b4c0 | 43 | #include <linux/seq_file.h> |
19ece546 | 44 | #include <linux/quotaops.h> |
337eb00a | 45 | #include <linux/smp_lock.h> |
ccd979bd MF |
46 | |
47 | #define MLOG_MASK_PREFIX ML_SUPER | |
48 | #include <cluster/masklog.h> | |
49 | ||
50 | #include "ocfs2.h" | |
51 | ||
52 | /* this should be the only file to include a version 1 header */ | |
53 | #include "ocfs1_fs_compat.h" | |
54 | ||
55 | #include "alloc.h" | |
d030cc97 | 56 | #include "blockcheck.h" |
ccd979bd MF |
57 | #include "dlmglue.h" |
58 | #include "export.h" | |
59 | #include "extent_map.h" | |
60 | #include "heartbeat.h" | |
61 | #include "inode.h" | |
62 | #include "journal.h" | |
63 | #include "localalloc.h" | |
64 | #include "namei.h" | |
65 | #include "slot_map.h" | |
66 | #include "super.h" | |
67 | #include "sysfile.h" | |
68 | #include "uptodate.h" | |
69 | #include "ver.h" | |
cf1d6c76 | 70 | #include "xattr.h" |
9e33d69f | 71 | #include "quota.h" |
ccd979bd MF |
72 | |
73 | #include "buffer_head_io.h" | |
74 | ||
e18b890b | 75 | static struct kmem_cache *ocfs2_inode_cachep = NULL; |
9e33d69f JK |
76 | struct kmem_cache *ocfs2_dquot_cachep; |
77 | struct kmem_cache *ocfs2_qf_chunk_cachep; | |
ccd979bd | 78 | |
ccd979bd MF |
79 | /* OCFS2 needs to schedule several differnt types of work which |
80 | * require cluster locking, disk I/O, recovery waits, etc. Since these | |
81 | * types of work tend to be heavy we avoid using the kernel events | |
82 | * workqueue and schedule on our own. */ | |
83 | struct workqueue_struct *ocfs2_wq = NULL; | |
84 | ||
85 | static struct dentry *ocfs2_debugfs_root = NULL; | |
86 | ||
87 | MODULE_AUTHOR("Oracle"); | |
88 | MODULE_LICENSE("GPL"); | |
89 | ||
c0123ade TY |
90 | struct mount_options |
91 | { | |
d147b3d6 | 92 | unsigned long commit_interval; |
c0123ade TY |
93 | unsigned long mount_opt; |
94 | unsigned int atime_quantum; | |
95 | signed short slot; | |
2fbe8d1e | 96 | unsigned int localalloc_opt; |
b61817e1 | 97 | char cluster_stack[OCFS2_STACK_LABEL_LEN + 1]; |
c0123ade TY |
98 | }; |
99 | ||
ccd979bd | 100 | static int ocfs2_parse_options(struct super_block *sb, char *options, |
c0123ade | 101 | struct mount_options *mopt, |
baf4661a | 102 | int is_remount); |
d550071c | 103 | static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt); |
ccd979bd MF |
104 | static void ocfs2_put_super(struct super_block *sb); |
105 | static int ocfs2_mount_volume(struct super_block *sb); | |
106 | static int ocfs2_remount(struct super_block *sb, int *flags, char *data); | |
107 | static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err); | |
108 | static int ocfs2_initialize_mem_caches(void); | |
109 | static void ocfs2_free_mem_caches(void); | |
110 | static void ocfs2_delete_osb(struct ocfs2_super *osb); | |
111 | ||
726c3342 | 112 | static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf); |
ccd979bd MF |
113 | |
114 | static int ocfs2_sync_fs(struct super_block *sb, int wait); | |
115 | ||
116 | static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb); | |
117 | static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb); | |
bddb8eb3 | 118 | static void ocfs2_release_system_inodes(struct ocfs2_super *osb); |
ccd979bd MF |
119 | static int ocfs2_check_volume(struct ocfs2_super *osb); |
120 | static int ocfs2_verify_volume(struct ocfs2_dinode *di, | |
121 | struct buffer_head *bh, | |
73be192b JB |
122 | u32 sectsize, |
123 | struct ocfs2_blockcheck_stats *stats); | |
ccd979bd MF |
124 | static int ocfs2_initialize_super(struct super_block *sb, |
125 | struct buffer_head *bh, | |
73be192b JB |
126 | int sector_size, |
127 | struct ocfs2_blockcheck_stats *stats); | |
ccd979bd MF |
128 | static int ocfs2_get_sector(struct super_block *sb, |
129 | struct buffer_head **bh, | |
130 | int block, | |
131 | int sect_size); | |
ccd979bd MF |
132 | static struct inode *ocfs2_alloc_inode(struct super_block *sb); |
133 | static void ocfs2_destroy_inode(struct inode *inode); | |
19ece546 JK |
134 | static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend); |
135 | static int ocfs2_enable_quotas(struct ocfs2_super *osb); | |
136 | static void ocfs2_disable_quotas(struct ocfs2_super *osb); | |
ccd979bd | 137 | |
ee9b6d61 | 138 | static const struct super_operations ocfs2_sops = { |
ccd979bd MF |
139 | .statfs = ocfs2_statfs, |
140 | .alloc_inode = ocfs2_alloc_inode, | |
141 | .destroy_inode = ocfs2_destroy_inode, | |
142 | .drop_inode = ocfs2_drop_inode, | |
143 | .clear_inode = ocfs2_clear_inode, | |
144 | .delete_inode = ocfs2_delete_inode, | |
145 | .sync_fs = ocfs2_sync_fs, | |
ccd979bd MF |
146 | .put_super = ocfs2_put_super, |
147 | .remount_fs = ocfs2_remount, | |
d550071c | 148 | .show_options = ocfs2_show_options, |
9e33d69f JK |
149 | .quota_read = ocfs2_quota_read, |
150 | .quota_write = ocfs2_quota_write, | |
ccd979bd MF |
151 | }; |
152 | ||
153 | enum { | |
154 | Opt_barrier, | |
155 | Opt_err_panic, | |
156 | Opt_err_ro, | |
157 | Opt_intr, | |
158 | Opt_nointr, | |
159 | Opt_hb_none, | |
160 | Opt_hb_local, | |
161 | Opt_data_ordered, | |
162 | Opt_data_writeback, | |
7f1a37e3 | 163 | Opt_atime_quantum, |
baf4661a | 164 | Opt_slot, |
d147b3d6 | 165 | Opt_commit, |
2fbe8d1e | 166 | Opt_localalloc, |
53fc622b | 167 | Opt_localflocks, |
b61817e1 | 168 | Opt_stack, |
cf1d6c76 TY |
169 | Opt_user_xattr, |
170 | Opt_nouser_xattr, | |
12462f1d | 171 | Opt_inode64, |
a68979b8 TY |
172 | Opt_acl, |
173 | Opt_noacl, | |
19ece546 JK |
174 | Opt_usrquota, |
175 | Opt_grpquota, | |
ccd979bd MF |
176 | Opt_err, |
177 | }; | |
178 | ||
a447c093 | 179 | static const match_table_t tokens = { |
ccd979bd MF |
180 | {Opt_barrier, "barrier=%u"}, |
181 | {Opt_err_panic, "errors=panic"}, | |
182 | {Opt_err_ro, "errors=remount-ro"}, | |
183 | {Opt_intr, "intr"}, | |
184 | {Opt_nointr, "nointr"}, | |
185 | {Opt_hb_none, OCFS2_HB_NONE}, | |
186 | {Opt_hb_local, OCFS2_HB_LOCAL}, | |
187 | {Opt_data_ordered, "data=ordered"}, | |
188 | {Opt_data_writeback, "data=writeback"}, | |
7f1a37e3 | 189 | {Opt_atime_quantum, "atime_quantum=%u"}, |
baf4661a | 190 | {Opt_slot, "preferred_slot=%u"}, |
d147b3d6 | 191 | {Opt_commit, "commit=%u"}, |
2fbe8d1e | 192 | {Opt_localalloc, "localalloc=%d"}, |
53fc622b | 193 | {Opt_localflocks, "localflocks"}, |
b61817e1 | 194 | {Opt_stack, "cluster_stack=%s"}, |
cf1d6c76 TY |
195 | {Opt_user_xattr, "user_xattr"}, |
196 | {Opt_nouser_xattr, "nouser_xattr"}, | |
12462f1d | 197 | {Opt_inode64, "inode64"}, |
a68979b8 TY |
198 | {Opt_acl, "acl"}, |
199 | {Opt_noacl, "noacl"}, | |
19ece546 JK |
200 | {Opt_usrquota, "usrquota"}, |
201 | {Opt_grpquota, "grpquota"}, | |
ccd979bd MF |
202 | {Opt_err, NULL} |
203 | }; | |
204 | ||
50397507 SM |
205 | #ifdef CONFIG_DEBUG_FS |
206 | static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len) | |
207 | { | |
208 | int out = 0; | |
209 | int i; | |
210 | struct ocfs2_cluster_connection *cconn = osb->cconn; | |
211 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
15633a22 | 212 | struct ocfs2_orphan_scan *os; |
50397507 SM |
213 | |
214 | out += snprintf(buf + out, len - out, | |
215 | "%10s => Id: %-s Uuid: %-s Gen: 0x%X Label: %-s\n", | |
216 | "Device", osb->dev_str, osb->uuid_str, | |
217 | osb->fs_generation, osb->vol_label); | |
218 | ||
219 | out += snprintf(buf + out, len - out, | |
220 | "%10s => State: %d Flags: 0x%lX\n", "Volume", | |
221 | atomic_read(&osb->vol_state), osb->osb_flags); | |
222 | ||
223 | out += snprintf(buf + out, len - out, | |
224 | "%10s => Block: %lu Cluster: %d\n", "Sizes", | |
225 | osb->sb->s_blocksize, osb->s_clustersize); | |
226 | ||
227 | out += snprintf(buf + out, len - out, | |
228 | "%10s => Compat: 0x%X Incompat: 0x%X " | |
229 | "ROcompat: 0x%X\n", | |
230 | "Features", osb->s_feature_compat, | |
231 | osb->s_feature_incompat, osb->s_feature_ro_compat); | |
232 | ||
233 | out += snprintf(buf + out, len - out, | |
234 | "%10s => Opts: 0x%lX AtimeQuanta: %u\n", "Mount", | |
235 | osb->s_mount_opt, osb->s_atime_quantum); | |
236 | ||
237 | out += snprintf(buf + out, len - out, | |
238 | "%10s => Stack: %s Name: %*s Version: %d.%d\n", | |
239 | "Cluster", | |
240 | (*osb->osb_cluster_stack == '\0' ? | |
241 | "o2cb" : osb->osb_cluster_stack), | |
242 | cconn->cc_namelen, cconn->cc_name, | |
243 | cconn->cc_version.pv_major, cconn->cc_version.pv_minor); | |
244 | ||
245 | spin_lock(&osb->dc_task_lock); | |
246 | out += snprintf(buf + out, len - out, | |
247 | "%10s => Pid: %d Count: %lu WakeSeq: %lu " | |
248 | "WorkSeq: %lu\n", "DownCnvt", | |
249 | task_pid_nr(osb->dc_task), osb->blocked_lock_count, | |
250 | osb->dc_wake_sequence, osb->dc_work_sequence); | |
251 | spin_unlock(&osb->dc_task_lock); | |
252 | ||
253 | spin_lock(&osb->osb_lock); | |
254 | out += snprintf(buf + out, len - out, "%10s => Pid: %d Nodes:", | |
255 | "Recovery", | |
256 | (osb->recovery_thread_task ? | |
257 | task_pid_nr(osb->recovery_thread_task) : -1)); | |
258 | if (rm->rm_used == 0) | |
259 | out += snprintf(buf + out, len - out, " None\n"); | |
260 | else { | |
261 | for (i = 0; i < rm->rm_used; i++) | |
262 | out += snprintf(buf + out, len - out, " %d", | |
263 | rm->rm_entries[i]); | |
264 | out += snprintf(buf + out, len - out, "\n"); | |
265 | } | |
266 | spin_unlock(&osb->osb_lock); | |
267 | ||
268 | out += snprintf(buf + out, len - out, | |
269 | "%10s => Pid: %d Interval: %lu Needs: %d\n", "Commit", | |
270 | task_pid_nr(osb->commit_task), osb->osb_commit_interval, | |
271 | atomic_read(&osb->needs_checkpoint)); | |
272 | ||
273 | out += snprintf(buf + out, len - out, | |
274 | "%10s => State: %d NumTxns: %d TxnId: %lu\n", | |
275 | "Journal", osb->journal->j_state, | |
276 | atomic_read(&osb->journal->j_num_trans), | |
277 | osb->journal->j_trans_id); | |
278 | ||
279 | out += snprintf(buf + out, len - out, | |
280 | "%10s => GlobalAllocs: %d LocalAllocs: %d " | |
281 | "SubAllocs: %d LAWinMoves: %d SAExtends: %d\n", | |
282 | "Stats", | |
283 | atomic_read(&osb->alloc_stats.bitmap_data), | |
284 | atomic_read(&osb->alloc_stats.local_data), | |
285 | atomic_read(&osb->alloc_stats.bg_allocs), | |
286 | atomic_read(&osb->alloc_stats.moves), | |
287 | atomic_read(&osb->alloc_stats.bg_extends)); | |
288 | ||
289 | out += snprintf(buf + out, len - out, | |
290 | "%10s => State: %u Descriptor: %llu Size: %u bits " | |
291 | "Default: %u bits\n", | |
292 | "LocalAlloc", osb->local_alloc_state, | |
293 | (unsigned long long)osb->la_last_gd, | |
294 | osb->local_alloc_bits, osb->local_alloc_default_bits); | |
295 | ||
296 | spin_lock(&osb->osb_lock); | |
297 | out += snprintf(buf + out, len - out, | |
298 | "%10s => Slot: %d NumStolen: %d\n", "Steal", | |
299 | osb->s_inode_steal_slot, | |
300 | atomic_read(&osb->s_num_inodes_stolen)); | |
301 | spin_unlock(&osb->osb_lock); | |
302 | ||
303 | out += snprintf(buf + out, len - out, "%10s => %3s %10s\n", | |
304 | "Slots", "Num", "RecoGen"); | |
305 | ||
306 | for (i = 0; i < osb->max_slots; ++i) { | |
307 | out += snprintf(buf + out, len - out, | |
308 | "%10s %c %3d %10d\n", | |
309 | " ", | |
310 | (i == osb->slot_num ? '*' : ' '), | |
311 | i, osb->slot_recovery_generations[i]); | |
312 | } | |
313 | ||
15633a22 SE |
314 | os = &osb->osb_orphan_scan; |
315 | out += snprintf(buf + out, len - out, "Orphan Scan=> "); | |
316 | out += snprintf(buf + out, len - out, "Local: %u Global: %u ", | |
317 | os->os_count, os->os_seqno); | |
318 | out += snprintf(buf + out, len - out, " Last Scan: %lu seconds ago\n", | |
319 | (get_seconds() - os->os_scantime.tv_sec)); | |
320 | ||
50397507 SM |
321 | return out; |
322 | } | |
323 | ||
324 | static int ocfs2_osb_debug_open(struct inode *inode, struct file *file) | |
325 | { | |
326 | struct ocfs2_super *osb = inode->i_private; | |
327 | char *buf = NULL; | |
328 | ||
329 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
330 | if (!buf) | |
331 | goto bail; | |
332 | ||
333 | i_size_write(inode, ocfs2_osb_dump(osb, buf, PAGE_SIZE)); | |
334 | ||
335 | file->private_data = buf; | |
336 | ||
337 | return 0; | |
338 | bail: | |
339 | return -ENOMEM; | |
340 | } | |
341 | ||
342 | static int ocfs2_debug_release(struct inode *inode, struct file *file) | |
343 | { | |
344 | kfree(file->private_data); | |
345 | return 0; | |
346 | } | |
347 | ||
348 | static ssize_t ocfs2_debug_read(struct file *file, char __user *buf, | |
349 | size_t nbytes, loff_t *ppos) | |
350 | { | |
351 | return simple_read_from_buffer(buf, nbytes, ppos, file->private_data, | |
352 | i_size_read(file->f_mapping->host)); | |
353 | } | |
354 | #else | |
355 | static int ocfs2_osb_debug_open(struct inode *inode, struct file *file) | |
356 | { | |
357 | return 0; | |
358 | } | |
359 | static int ocfs2_debug_release(struct inode *inode, struct file *file) | |
360 | { | |
361 | return 0; | |
362 | } | |
363 | static ssize_t ocfs2_debug_read(struct file *file, char __user *buf, | |
364 | size_t nbytes, loff_t *ppos) | |
365 | { | |
366 | return 0; | |
367 | } | |
368 | #endif /* CONFIG_DEBUG_FS */ | |
369 | ||
370 | static struct file_operations ocfs2_osb_debug_fops = { | |
371 | .open = ocfs2_osb_debug_open, | |
372 | .release = ocfs2_debug_release, | |
373 | .read = ocfs2_debug_read, | |
374 | .llseek = generic_file_llseek, | |
375 | }; | |
376 | ||
ccd979bd MF |
377 | static int ocfs2_sync_fs(struct super_block *sb, int wait) |
378 | { | |
bddb8eb3 | 379 | int status; |
ccd979bd MF |
380 | tid_t target; |
381 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
382 | ||
ccd979bd MF |
383 | if (ocfs2_is_hard_readonly(osb)) |
384 | return -EROFS; | |
385 | ||
386 | if (wait) { | |
387 | status = ocfs2_flush_truncate_log(osb); | |
388 | if (status < 0) | |
389 | mlog_errno(status); | |
390 | } else { | |
391 | ocfs2_schedule_truncate_log_flush(osb, 0); | |
392 | } | |
393 | ||
2b4e30fb JB |
394 | if (jbd2_journal_start_commit(OCFS2_SB(sb)->journal->j_journal, |
395 | &target)) { | |
ccd979bd | 396 | if (wait) |
2b4e30fb JB |
397 | jbd2_log_wait_commit(OCFS2_SB(sb)->journal->j_journal, |
398 | target); | |
ccd979bd MF |
399 | } |
400 | return 0; | |
401 | } | |
402 | ||
1a224ad1 JK |
403 | static int ocfs2_need_system_inode(struct ocfs2_super *osb, int ino) |
404 | { | |
405 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_USRQUOTA) | |
406 | && (ino == USER_QUOTA_SYSTEM_INODE | |
407 | || ino == LOCAL_USER_QUOTA_SYSTEM_INODE)) | |
408 | return 0; | |
409 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA) | |
410 | && (ino == GROUP_QUOTA_SYSTEM_INODE | |
411 | || ino == LOCAL_GROUP_QUOTA_SYSTEM_INODE)) | |
412 | return 0; | |
413 | return 1; | |
414 | } | |
415 | ||
ccd979bd MF |
416 | static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb) |
417 | { | |
418 | struct inode *new = NULL; | |
419 | int status = 0; | |
420 | int i; | |
421 | ||
422 | mlog_entry_void(); | |
423 | ||
5fa0613e | 424 | new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE, 0); |
ccd979bd MF |
425 | if (IS_ERR(new)) { |
426 | status = PTR_ERR(new); | |
427 | mlog_errno(status); | |
428 | goto bail; | |
429 | } | |
430 | osb->root_inode = new; | |
431 | ||
5fa0613e | 432 | new = ocfs2_iget(osb, osb->system_dir_blkno, OCFS2_FI_FLAG_SYSFILE, 0); |
ccd979bd MF |
433 | if (IS_ERR(new)) { |
434 | status = PTR_ERR(new); | |
435 | mlog_errno(status); | |
436 | goto bail; | |
437 | } | |
438 | osb->sys_root_inode = new; | |
439 | ||
440 | for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE; | |
441 | i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) { | |
1a224ad1 JK |
442 | if (!ocfs2_need_system_inode(osb, i)) |
443 | continue; | |
ccd979bd MF |
444 | new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); |
445 | if (!new) { | |
446 | ocfs2_release_system_inodes(osb); | |
447 | status = -EINVAL; | |
448 | mlog_errno(status); | |
449 | /* FIXME: Should ERROR_RO_FS */ | |
450 | mlog(ML_ERROR, "Unable to load system inode %d, " | |
451 | "possibly corrupt fs?", i); | |
452 | goto bail; | |
453 | } | |
454 | // the array now has one ref, so drop this one | |
455 | iput(new); | |
456 | } | |
457 | ||
458 | bail: | |
459 | mlog_exit(status); | |
460 | return status; | |
461 | } | |
462 | ||
463 | static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb) | |
464 | { | |
465 | struct inode *new = NULL; | |
466 | int status = 0; | |
467 | int i; | |
468 | ||
469 | mlog_entry_void(); | |
470 | ||
471 | for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1; | |
472 | i < NUM_SYSTEM_INODES; | |
473 | i++) { | |
1a224ad1 JK |
474 | if (!ocfs2_need_system_inode(osb, i)) |
475 | continue; | |
ccd979bd MF |
476 | new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); |
477 | if (!new) { | |
478 | ocfs2_release_system_inodes(osb); | |
479 | status = -EINVAL; | |
480 | mlog(ML_ERROR, "status=%d, sysfile=%d, slot=%d\n", | |
481 | status, i, osb->slot_num); | |
482 | goto bail; | |
483 | } | |
484 | /* the array now has one ref, so drop this one */ | |
485 | iput(new); | |
486 | } | |
487 | ||
488 | bail: | |
489 | mlog_exit(status); | |
490 | return status; | |
491 | } | |
492 | ||
bddb8eb3 | 493 | static void ocfs2_release_system_inodes(struct ocfs2_super *osb) |
ccd979bd | 494 | { |
bddb8eb3 | 495 | int i; |
ccd979bd MF |
496 | struct inode *inode; |
497 | ||
498 | mlog_entry_void(); | |
499 | ||
500 | for (i = 0; i < NUM_SYSTEM_INODES; i++) { | |
501 | inode = osb->system_inodes[i]; | |
502 | if (inode) { | |
503 | iput(inode); | |
504 | osb->system_inodes[i] = NULL; | |
505 | } | |
506 | } | |
507 | ||
508 | inode = osb->sys_root_inode; | |
509 | if (inode) { | |
510 | iput(inode); | |
511 | osb->sys_root_inode = NULL; | |
512 | } | |
513 | ||
514 | inode = osb->root_inode; | |
515 | if (inode) { | |
516 | iput(inode); | |
517 | osb->root_inode = NULL; | |
518 | } | |
519 | ||
bddb8eb3 | 520 | mlog_exit(0); |
ccd979bd MF |
521 | } |
522 | ||
523 | /* We're allocating fs objects, use GFP_NOFS */ | |
524 | static struct inode *ocfs2_alloc_inode(struct super_block *sb) | |
525 | { | |
526 | struct ocfs2_inode_info *oi; | |
527 | ||
e6b4f8da | 528 | oi = kmem_cache_alloc(ocfs2_inode_cachep, GFP_NOFS); |
ccd979bd MF |
529 | if (!oi) |
530 | return NULL; | |
531 | ||
2b4e30fb | 532 | jbd2_journal_init_jbd_inode(&oi->ip_jinode, &oi->vfs_inode); |
ccd979bd MF |
533 | return &oi->vfs_inode; |
534 | } | |
535 | ||
536 | static void ocfs2_destroy_inode(struct inode *inode) | |
537 | { | |
538 | kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode)); | |
539 | } | |
540 | ||
5a254031 MF |
541 | static unsigned long long ocfs2_max_file_offset(unsigned int bbits, |
542 | unsigned int cbits) | |
ccd979bd | 543 | { |
5a254031 MF |
544 | unsigned int bytes = 1 << cbits; |
545 | unsigned int trim = bytes; | |
546 | unsigned int bitshift = 32; | |
547 | ||
548 | /* | |
549 | * i_size and all block offsets in ocfs2 are always 64 bits | |
550 | * wide. i_clusters is 32 bits, in cluster-sized units. So on | |
551 | * 64 bit platforms, cluster size will be the limiting factor. | |
ccd979bd MF |
552 | */ |
553 | ||
554 | #if BITS_PER_LONG == 32 | |
555 | # if defined(CONFIG_LBD) | |
2ecd05ae | 556 | BUILD_BUG_ON(sizeof(sector_t) != 8); |
5a254031 MF |
557 | /* |
558 | * We might be limited by page cache size. | |
559 | */ | |
560 | if (bytes > PAGE_CACHE_SIZE) { | |
561 | bytes = PAGE_CACHE_SIZE; | |
562 | trim = 1; | |
563 | /* | |
564 | * Shift by 31 here so that we don't get larger than | |
565 | * MAX_LFS_FILESIZE | |
566 | */ | |
567 | bitshift = 31; | |
568 | } | |
ccd979bd | 569 | # else |
5a254031 MF |
570 | /* |
571 | * We are limited by the size of sector_t. Use block size, as | |
572 | * that's what we expose to the VFS. | |
573 | */ | |
574 | bytes = 1 << bbits; | |
575 | trim = 1; | |
576 | bitshift = 31; | |
ccd979bd MF |
577 | # endif |
578 | #endif | |
579 | ||
5a254031 MF |
580 | /* |
581 | * Trim by a whole cluster when we can actually approach the | |
582 | * on-disk limits. Otherwise we can overflow i_clusters when | |
583 | * an extent start is at the max offset. | |
584 | */ | |
585 | return (((unsigned long long)bytes) << bitshift) - trim; | |
ccd979bd MF |
586 | } |
587 | ||
588 | static int ocfs2_remount(struct super_block *sb, int *flags, char *data) | |
589 | { | |
590 | int incompat_features; | |
591 | int ret = 0; | |
c0123ade | 592 | struct mount_options parsed_options; |
ccd979bd MF |
593 | struct ocfs2_super *osb = OCFS2_SB(sb); |
594 | ||
337eb00a AIB |
595 | lock_kernel(); |
596 | ||
c0123ade | 597 | if (!ocfs2_parse_options(sb, data, &parsed_options, 1)) { |
ccd979bd MF |
598 | ret = -EINVAL; |
599 | goto out; | |
600 | } | |
601 | ||
602 | if ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) != | |
c0123ade | 603 | (parsed_options.mount_opt & OCFS2_MOUNT_HB_LOCAL)) { |
ccd979bd MF |
604 | ret = -EINVAL; |
605 | mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n"); | |
606 | goto out; | |
607 | } | |
608 | ||
609 | if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) != | |
c0123ade | 610 | (parsed_options.mount_opt & OCFS2_MOUNT_DATA_WRITEBACK)) { |
ccd979bd MF |
611 | ret = -EINVAL; |
612 | mlog(ML_ERROR, "Cannot change data mode on remount\n"); | |
613 | goto out; | |
614 | } | |
615 | ||
12462f1d JB |
616 | /* Probably don't want this on remount; it might |
617 | * mess with other nodes */ | |
618 | if (!(osb->s_mount_opt & OCFS2_MOUNT_INODE64) && | |
619 | (parsed_options.mount_opt & OCFS2_MOUNT_INODE64)) { | |
620 | ret = -EINVAL; | |
621 | mlog(ML_ERROR, "Cannot enable inode64 on remount\n"); | |
622 | goto out; | |
623 | } | |
624 | ||
ccd979bd MF |
625 | /* We're going to/from readonly mode. */ |
626 | if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) { | |
19ece546 JK |
627 | /* Disable quota accounting before remounting RO */ |
628 | if (*flags & MS_RDONLY) { | |
629 | ret = ocfs2_susp_quotas(osb, 0); | |
630 | if (ret < 0) | |
631 | goto out; | |
632 | } | |
ccd979bd MF |
633 | /* Lock here so the check of HARD_RO and the potential |
634 | * setting of SOFT_RO is atomic. */ | |
635 | spin_lock(&osb->osb_lock); | |
636 | if (osb->osb_flags & OCFS2_OSB_HARD_RO) { | |
637 | mlog(ML_ERROR, "Remount on readonly device is forbidden.\n"); | |
638 | ret = -EROFS; | |
639 | goto unlock_osb; | |
640 | } | |
641 | ||
642 | if (*flags & MS_RDONLY) { | |
643 | mlog(0, "Going to ro mode.\n"); | |
644 | sb->s_flags |= MS_RDONLY; | |
645 | osb->osb_flags |= OCFS2_OSB_SOFT_RO; | |
646 | } else { | |
647 | mlog(0, "Making ro filesystem writeable.\n"); | |
648 | ||
649 | if (osb->osb_flags & OCFS2_OSB_ERROR_FS) { | |
650 | mlog(ML_ERROR, "Cannot remount RDWR " | |
651 | "filesystem due to previous errors.\n"); | |
652 | ret = -EROFS; | |
653 | goto unlock_osb; | |
654 | } | |
655 | incompat_features = OCFS2_HAS_RO_COMPAT_FEATURE(sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP); | |
656 | if (incompat_features) { | |
657 | mlog(ML_ERROR, "Cannot remount RDWR because " | |
658 | "of unsupported optional features " | |
659 | "(%x).\n", incompat_features); | |
660 | ret = -EINVAL; | |
661 | goto unlock_osb; | |
662 | } | |
663 | sb->s_flags &= ~MS_RDONLY; | |
664 | osb->osb_flags &= ~OCFS2_OSB_SOFT_RO; | |
665 | } | |
666 | unlock_osb: | |
667 | spin_unlock(&osb->osb_lock); | |
19ece546 JK |
668 | /* Enable quota accounting after remounting RW */ |
669 | if (!ret && !(*flags & MS_RDONLY)) { | |
670 | if (sb_any_quota_suspended(sb)) | |
671 | ret = ocfs2_susp_quotas(osb, 1); | |
672 | else | |
673 | ret = ocfs2_enable_quotas(osb); | |
674 | if (ret < 0) { | |
675 | /* Return back changes... */ | |
676 | spin_lock(&osb->osb_lock); | |
677 | sb->s_flags |= MS_RDONLY; | |
678 | osb->osb_flags |= OCFS2_OSB_SOFT_RO; | |
679 | spin_unlock(&osb->osb_lock); | |
680 | goto out; | |
681 | } | |
682 | } | |
ccd979bd MF |
683 | } |
684 | ||
685 | if (!ret) { | |
ccd979bd MF |
686 | /* Only save off the new mount options in case of a successful |
687 | * remount. */ | |
a68979b8 TY |
688 | if (!(osb->s_feature_incompat & OCFS2_FEATURE_INCOMPAT_XATTR)) |
689 | parsed_options.mount_opt &= ~OCFS2_MOUNT_POSIX_ACL; | |
c0123ade TY |
690 | osb->s_mount_opt = parsed_options.mount_opt; |
691 | osb->s_atime_quantum = parsed_options.atime_quantum; | |
692 | osb->preferred_slot = parsed_options.slot; | |
d147b3d6 MF |
693 | if (parsed_options.commit_interval) |
694 | osb->osb_commit_interval = parsed_options.commit_interval; | |
e001e796 MF |
695 | |
696 | if (!ocfs2_is_hard_readonly(osb)) | |
697 | ocfs2_set_journal_params(osb); | |
ccd979bd MF |
698 | } |
699 | out: | |
337eb00a | 700 | unlock_kernel(); |
ccd979bd MF |
701 | return ret; |
702 | } | |
703 | ||
704 | static int ocfs2_sb_probe(struct super_block *sb, | |
705 | struct buffer_head **bh, | |
73be192b JB |
706 | int *sector_size, |
707 | struct ocfs2_blockcheck_stats *stats) | |
ccd979bd | 708 | { |
bddb8eb3 | 709 | int status, tmpstat; |
ccd979bd MF |
710 | struct ocfs1_vol_disk_hdr *hdr; |
711 | struct ocfs2_dinode *di; | |
712 | int blksize; | |
713 | ||
714 | *bh = NULL; | |
715 | ||
716 | /* may be > 512 */ | |
e1defc4f | 717 | *sector_size = bdev_logical_block_size(sb->s_bdev); |
ccd979bd MF |
718 | if (*sector_size > OCFS2_MAX_BLOCKSIZE) { |
719 | mlog(ML_ERROR, "Hardware sector size too large: %d (max=%d)\n", | |
720 | *sector_size, OCFS2_MAX_BLOCKSIZE); | |
721 | status = -EINVAL; | |
722 | goto bail; | |
723 | } | |
724 | ||
725 | /* Can this really happen? */ | |
726 | if (*sector_size < OCFS2_MIN_BLOCKSIZE) | |
727 | *sector_size = OCFS2_MIN_BLOCKSIZE; | |
728 | ||
729 | /* check block zero for old format */ | |
730 | status = ocfs2_get_sector(sb, bh, 0, *sector_size); | |
731 | if (status < 0) { | |
732 | mlog_errno(status); | |
733 | goto bail; | |
734 | } | |
735 | hdr = (struct ocfs1_vol_disk_hdr *) (*bh)->b_data; | |
736 | if (hdr->major_version == OCFS1_MAJOR_VERSION) { | |
737 | mlog(ML_ERROR, "incompatible version: %u.%u\n", | |
738 | hdr->major_version, hdr->minor_version); | |
739 | status = -EINVAL; | |
740 | } | |
741 | if (memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE, | |
742 | strlen(OCFS1_VOLUME_SIGNATURE)) == 0) { | |
743 | mlog(ML_ERROR, "incompatible volume signature: %8s\n", | |
744 | hdr->signature); | |
745 | status = -EINVAL; | |
746 | } | |
747 | brelse(*bh); | |
748 | *bh = NULL; | |
749 | if (status < 0) { | |
750 | mlog(ML_ERROR, "This is an ocfs v1 filesystem which must be " | |
751 | "upgraded before mounting with ocfs v2\n"); | |
752 | goto bail; | |
753 | } | |
754 | ||
755 | /* | |
756 | * Now check at magic offset for 512, 1024, 2048, 4096 | |
757 | * blocksizes. 4096 is the maximum blocksize because it is | |
758 | * the minimum clustersize. | |
759 | */ | |
760 | status = -EINVAL; | |
761 | for (blksize = *sector_size; | |
762 | blksize <= OCFS2_MAX_BLOCKSIZE; | |
763 | blksize <<= 1) { | |
764 | tmpstat = ocfs2_get_sector(sb, bh, | |
765 | OCFS2_SUPER_BLOCK_BLKNO, | |
766 | blksize); | |
767 | if (tmpstat < 0) { | |
768 | status = tmpstat; | |
769 | mlog_errno(status); | |
770 | goto bail; | |
771 | } | |
772 | di = (struct ocfs2_dinode *) (*bh)->b_data; | |
73be192b JB |
773 | memset(stats, 0, sizeof(struct ocfs2_blockcheck_stats)); |
774 | status = ocfs2_verify_volume(di, *bh, blksize, stats); | |
ccd979bd MF |
775 | if (status >= 0) |
776 | goto bail; | |
777 | brelse(*bh); | |
778 | *bh = NULL; | |
779 | if (status != -EAGAIN) | |
780 | break; | |
781 | } | |
782 | ||
783 | bail: | |
784 | return status; | |
785 | } | |
786 | ||
c271c5c2 SM |
787 | static int ocfs2_verify_heartbeat(struct ocfs2_super *osb) |
788 | { | |
789 | if (ocfs2_mount_local(osb)) { | |
790 | if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { | |
791 | mlog(ML_ERROR, "Cannot heartbeat on a locally " | |
792 | "mounted device.\n"); | |
793 | return -EINVAL; | |
794 | } | |
795 | } | |
796 | ||
b61817e1 JB |
797 | if (ocfs2_userspace_stack(osb)) { |
798 | if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { | |
799 | mlog(ML_ERROR, "Userspace stack expected, but " | |
800 | "o2cb heartbeat arguments passed to mount\n"); | |
801 | return -EINVAL; | |
802 | } | |
803 | } | |
804 | ||
c271c5c2 | 805 | if (!(osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL)) { |
b61817e1 JB |
806 | if (!ocfs2_mount_local(osb) && !ocfs2_is_hard_readonly(osb) && |
807 | !ocfs2_userspace_stack(osb)) { | |
c271c5c2 SM |
808 | mlog(ML_ERROR, "Heartbeat has to be started to mount " |
809 | "a read-write clustered device.\n"); | |
810 | return -EINVAL; | |
811 | } | |
812 | } | |
813 | ||
814 | return 0; | |
815 | } | |
816 | ||
b61817e1 JB |
817 | /* |
818 | * If we're using a userspace stack, mount should have passed | |
819 | * a name that matches the disk. If not, mount should not | |
820 | * have passed a stack. | |
821 | */ | |
822 | static int ocfs2_verify_userspace_stack(struct ocfs2_super *osb, | |
823 | struct mount_options *mopt) | |
824 | { | |
825 | if (!ocfs2_userspace_stack(osb) && mopt->cluster_stack[0]) { | |
826 | mlog(ML_ERROR, | |
827 | "cluster stack passed to mount, but this filesystem " | |
828 | "does not support it\n"); | |
829 | return -EINVAL; | |
830 | } | |
831 | ||
832 | if (ocfs2_userspace_stack(osb) && | |
833 | strncmp(osb->osb_cluster_stack, mopt->cluster_stack, | |
834 | OCFS2_STACK_LABEL_LEN)) { | |
835 | mlog(ML_ERROR, | |
836 | "cluster stack passed to mount (\"%s\") does not " | |
837 | "match the filesystem (\"%s\")\n", | |
838 | mopt->cluster_stack, | |
839 | osb->osb_cluster_stack); | |
840 | return -EINVAL; | |
841 | } | |
842 | ||
843 | return 0; | |
844 | } | |
845 | ||
19ece546 JK |
846 | static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend) |
847 | { | |
848 | int type; | |
849 | struct super_block *sb = osb->sb; | |
850 | unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA, | |
851 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; | |
852 | int status = 0; | |
853 | ||
854 | for (type = 0; type < MAXQUOTAS; type++) { | |
855 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) | |
856 | continue; | |
857 | if (unsuspend) | |
858 | status = vfs_quota_enable( | |
859 | sb_dqopt(sb)->files[type], | |
860 | type, QFMT_OCFS2, | |
861 | DQUOT_SUSPENDED); | |
862 | else | |
863 | status = vfs_quota_disable(sb, type, | |
864 | DQUOT_SUSPENDED); | |
865 | if (status < 0) | |
866 | break; | |
867 | } | |
868 | if (status < 0) | |
869 | mlog(ML_ERROR, "Failed to suspend/unsuspend quotas on " | |
870 | "remount (error = %d).\n", status); | |
871 | return status; | |
872 | } | |
873 | ||
874 | static int ocfs2_enable_quotas(struct ocfs2_super *osb) | |
875 | { | |
876 | struct inode *inode[MAXQUOTAS] = { NULL, NULL }; | |
877 | struct super_block *sb = osb->sb; | |
878 | unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA, | |
879 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; | |
880 | unsigned int ino[MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE, | |
881 | LOCAL_GROUP_QUOTA_SYSTEM_INODE }; | |
882 | int status; | |
883 | int type; | |
884 | ||
885 | sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NEGATIVE_USAGE; | |
886 | for (type = 0; type < MAXQUOTAS; type++) { | |
887 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) | |
888 | continue; | |
889 | inode[type] = ocfs2_get_system_file_inode(osb, ino[type], | |
890 | osb->slot_num); | |
891 | if (!inode[type]) { | |
892 | status = -ENOENT; | |
893 | goto out_quota_off; | |
894 | } | |
895 | status = vfs_quota_enable(inode[type], type, QFMT_OCFS2, | |
896 | DQUOT_USAGE_ENABLED); | |
897 | if (status < 0) | |
898 | goto out_quota_off; | |
899 | } | |
900 | ||
901 | for (type = 0; type < MAXQUOTAS; type++) | |
902 | iput(inode[type]); | |
903 | return 0; | |
904 | out_quota_off: | |
905 | ocfs2_disable_quotas(osb); | |
906 | for (type = 0; type < MAXQUOTAS; type++) | |
907 | iput(inode[type]); | |
908 | mlog_errno(status); | |
909 | return status; | |
910 | } | |
911 | ||
912 | static void ocfs2_disable_quotas(struct ocfs2_super *osb) | |
913 | { | |
914 | int type; | |
915 | struct inode *inode; | |
916 | struct super_block *sb = osb->sb; | |
917 | ||
918 | /* We mostly ignore errors in this function because there's not much | |
919 | * we can do when we see them */ | |
920 | for (type = 0; type < MAXQUOTAS; type++) { | |
921 | if (!sb_has_quota_loaded(sb, type)) | |
922 | continue; | |
923 | inode = igrab(sb->s_dquot.files[type]); | |
924 | /* Turn off quotas. This will remove all dquot structures from | |
925 | * memory and so they will be automatically synced to global | |
926 | * quota files */ | |
927 | vfs_quota_disable(sb, type, DQUOT_USAGE_ENABLED | | |
928 | DQUOT_LIMITS_ENABLED); | |
929 | if (!inode) | |
930 | continue; | |
931 | iput(inode); | |
932 | } | |
933 | } | |
934 | ||
935 | /* Handle quota on quotactl */ | |
936 | static int ocfs2_quota_on(struct super_block *sb, int type, int format_id, | |
937 | char *path, int remount) | |
938 | { | |
939 | unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA, | |
940 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; | |
941 | ||
942 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) | |
943 | return -EINVAL; | |
944 | ||
945 | if (remount) | |
946 | return 0; /* Just ignore it has been handled in | |
947 | * ocfs2_remount() */ | |
948 | return vfs_quota_enable(sb_dqopt(sb)->files[type], type, | |
949 | format_id, DQUOT_LIMITS_ENABLED); | |
950 | } | |
951 | ||
952 | /* Handle quota off quotactl */ | |
953 | static int ocfs2_quota_off(struct super_block *sb, int type, int remount) | |
954 | { | |
955 | if (remount) | |
956 | return 0; /* Ignore now and handle later in | |
957 | * ocfs2_remount() */ | |
958 | return vfs_quota_disable(sb, type, DQUOT_LIMITS_ENABLED); | |
959 | } | |
960 | ||
961 | static struct quotactl_ops ocfs2_quotactl_ops = { | |
962 | .quota_on = ocfs2_quota_on, | |
963 | .quota_off = ocfs2_quota_off, | |
964 | .quota_sync = vfs_quota_sync, | |
965 | .get_info = vfs_get_dqinfo, | |
966 | .set_info = vfs_set_dqinfo, | |
967 | .get_dqblk = vfs_get_dqblk, | |
968 | .set_dqblk = vfs_set_dqblk, | |
969 | }; | |
970 | ||
ccd979bd MF |
971 | static int ocfs2_fill_super(struct super_block *sb, void *data, int silent) |
972 | { | |
973 | struct dentry *root; | |
974 | int status, sector_size; | |
c0123ade | 975 | struct mount_options parsed_options; |
ccd979bd MF |
976 | struct inode *inode = NULL; |
977 | struct ocfs2_super *osb = NULL; | |
978 | struct buffer_head *bh = NULL; | |
c271c5c2 | 979 | char nodestr[8]; |
73be192b | 980 | struct ocfs2_blockcheck_stats stats; |
ccd979bd MF |
981 | |
982 | mlog_entry("%p, %p, %i", sb, data, silent); | |
983 | ||
c0123ade | 984 | if (!ocfs2_parse_options(sb, data, &parsed_options, 0)) { |
ccd979bd MF |
985 | status = -EINVAL; |
986 | goto read_super_error; | |
987 | } | |
988 | ||
989 | /* probe for superblock */ | |
73be192b | 990 | status = ocfs2_sb_probe(sb, &bh, §or_size, &stats); |
ccd979bd MF |
991 | if (status < 0) { |
992 | mlog(ML_ERROR, "superblock probe failed!\n"); | |
993 | goto read_super_error; | |
994 | } | |
995 | ||
73be192b | 996 | status = ocfs2_initialize_super(sb, bh, sector_size, &stats); |
ccd979bd MF |
997 | osb = OCFS2_SB(sb); |
998 | if (status < 0) { | |
999 | mlog_errno(status); | |
1000 | goto read_super_error; | |
1001 | } | |
1002 | brelse(bh); | |
1003 | bh = NULL; | |
a68979b8 TY |
1004 | |
1005 | if (!(osb->s_feature_incompat & OCFS2_FEATURE_INCOMPAT_XATTR)) | |
1006 | parsed_options.mount_opt &= ~OCFS2_MOUNT_POSIX_ACL; | |
1007 | ||
c0123ade TY |
1008 | osb->s_mount_opt = parsed_options.mount_opt; |
1009 | osb->s_atime_quantum = parsed_options.atime_quantum; | |
1010 | osb->preferred_slot = parsed_options.slot; | |
d147b3d6 | 1011 | osb->osb_commit_interval = parsed_options.commit_interval; |
9c7af40b MF |
1012 | osb->local_alloc_default_bits = ocfs2_megabytes_to_clusters(sb, parsed_options.localalloc_opt); |
1013 | osb->local_alloc_bits = osb->local_alloc_default_bits; | |
19ece546 JK |
1014 | if (osb->s_mount_opt & OCFS2_MOUNT_USRQUOTA && |
1015 | !OCFS2_HAS_RO_COMPAT_FEATURE(sb, | |
1016 | OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) { | |
1017 | status = -EINVAL; | |
1018 | mlog(ML_ERROR, "User quotas were requested, but this " | |
1019 | "filesystem does not have the feature enabled.\n"); | |
1020 | goto read_super_error; | |
1021 | } | |
1022 | if (osb->s_mount_opt & OCFS2_MOUNT_GRPQUOTA && | |
1023 | !OCFS2_HAS_RO_COMPAT_FEATURE(sb, | |
1024 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) { | |
1025 | status = -EINVAL; | |
1026 | mlog(ML_ERROR, "Group quotas were requested, but this " | |
1027 | "filesystem does not have the feature enabled.\n"); | |
1028 | goto read_super_error; | |
1029 | } | |
ccd979bd | 1030 | |
b61817e1 JB |
1031 | status = ocfs2_verify_userspace_stack(osb, &parsed_options); |
1032 | if (status) | |
1033 | goto read_super_error; | |
1034 | ||
ccd979bd MF |
1035 | sb->s_magic = OCFS2_SUPER_MAGIC; |
1036 | ||
a68979b8 TY |
1037 | sb->s_flags = (sb->s_flags & ~MS_POSIXACL) | |
1038 | ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0); | |
1039 | ||
ccd979bd MF |
1040 | /* Hard readonly mode only if: bdev_read_only, MS_RDONLY, |
1041 | * heartbeat=none */ | |
1042 | if (bdev_read_only(sb->s_bdev)) { | |
1043 | if (!(sb->s_flags & MS_RDONLY)) { | |
1044 | status = -EACCES; | |
1045 | mlog(ML_ERROR, "Readonly device detected but readonly " | |
1046 | "mount was not specified.\n"); | |
1047 | goto read_super_error; | |
1048 | } | |
1049 | ||
1050 | /* You should not be able to start a local heartbeat | |
1051 | * on a readonly device. */ | |
1052 | if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { | |
1053 | status = -EROFS; | |
1054 | mlog(ML_ERROR, "Local heartbeat specified on readonly " | |
1055 | "device.\n"); | |
1056 | goto read_super_error; | |
1057 | } | |
1058 | ||
1059 | status = ocfs2_check_journals_nolocks(osb); | |
1060 | if (status < 0) { | |
1061 | if (status == -EROFS) | |
1062 | mlog(ML_ERROR, "Recovery required on readonly " | |
1063 | "file system, but write access is " | |
1064 | "unavailable.\n"); | |
1065 | else | |
1066 | mlog_errno(status); | |
1067 | goto read_super_error; | |
1068 | } | |
1069 | ||
1070 | ocfs2_set_ro_flag(osb, 1); | |
1071 | ||
1072 | printk(KERN_NOTICE "Readonly device detected. No cluster " | |
1073 | "services will be utilized for this mount. Recovery " | |
1074 | "will be skipped.\n"); | |
1075 | } | |
1076 | ||
1077 | if (!ocfs2_is_hard_readonly(osb)) { | |
ccd979bd MF |
1078 | if (sb->s_flags & MS_RDONLY) |
1079 | ocfs2_set_ro_flag(osb, 0); | |
1080 | } | |
1081 | ||
c271c5c2 SM |
1082 | status = ocfs2_verify_heartbeat(osb); |
1083 | if (status < 0) { | |
1084 | mlog_errno(status); | |
1085 | goto read_super_error; | |
1086 | } | |
1087 | ||
ccd979bd MF |
1088 | osb->osb_debug_root = debugfs_create_dir(osb->uuid_str, |
1089 | ocfs2_debugfs_root); | |
1090 | if (!osb->osb_debug_root) { | |
1091 | status = -EINVAL; | |
1092 | mlog(ML_ERROR, "Unable to create per-mount debugfs root.\n"); | |
1093 | goto read_super_error; | |
1094 | } | |
1095 | ||
50397507 SM |
1096 | osb->osb_ctxt = debugfs_create_file("fs_state", S_IFREG|S_IRUSR, |
1097 | osb->osb_debug_root, | |
1098 | osb, | |
1099 | &ocfs2_osb_debug_fops); | |
1100 | if (!osb->osb_ctxt) { | |
1101 | status = -EINVAL; | |
1102 | mlog_errno(status); | |
1103 | goto read_super_error; | |
1104 | } | |
1105 | ||
73be192b JB |
1106 | if (ocfs2_meta_ecc(osb)) { |
1107 | status = ocfs2_blockcheck_stats_debugfs_install( | |
1108 | &osb->osb_ecc_stats, | |
1109 | osb->osb_debug_root); | |
1110 | if (status) { | |
1111 | mlog(ML_ERROR, | |
1112 | "Unable to create blockcheck statistics " | |
1113 | "files\n"); | |
1114 | goto read_super_error; | |
1115 | } | |
1116 | } | |
1117 | ||
ccd979bd MF |
1118 | status = ocfs2_mount_volume(sb); |
1119 | if (osb->root_inode) | |
1120 | inode = igrab(osb->root_inode); | |
1121 | ||
1122 | if (status < 0) | |
1123 | goto read_super_error; | |
1124 | ||
1125 | if (!inode) { | |
1126 | status = -EIO; | |
1127 | mlog_errno(status); | |
1128 | goto read_super_error; | |
1129 | } | |
1130 | ||
1131 | root = d_alloc_root(inode); | |
1132 | if (!root) { | |
1133 | status = -ENOMEM; | |
1134 | mlog_errno(status); | |
1135 | goto read_super_error; | |
1136 | } | |
1137 | ||
1138 | sb->s_root = root; | |
1139 | ||
1140 | ocfs2_complete_mount_recovery(osb); | |
1141 | ||
c271c5c2 SM |
1142 | if (ocfs2_mount_local(osb)) |
1143 | snprintf(nodestr, sizeof(nodestr), "local"); | |
1144 | else | |
19fdb624 | 1145 | snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num); |
c271c5c2 SM |
1146 | |
1147 | printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %s, slot %d) " | |
781ee3e2 | 1148 | "with %s data mode.\n", |
c271c5c2 | 1149 | osb->dev_str, nodestr, osb->slot_num, |
ccd979bd MF |
1150 | osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" : |
1151 | "ordered"); | |
1152 | ||
1153 | atomic_set(&osb->vol_state, VOLUME_MOUNTED); | |
1154 | wake_up(&osb->osb_mount_event); | |
1155 | ||
19ece546 JK |
1156 | /* Now we can initialize quotas because we can afford to wait |
1157 | * for cluster locks recovery now. That also means that truncation | |
1158 | * log recovery can happen but that waits for proper quota setup */ | |
1159 | if (!(sb->s_flags & MS_RDONLY)) { | |
1160 | status = ocfs2_enable_quotas(osb); | |
1161 | if (status < 0) { | |
1162 | /* We have to err-out specially here because | |
1163 | * s_root is already set */ | |
1164 | mlog_errno(status); | |
1165 | atomic_set(&osb->vol_state, VOLUME_DISABLED); | |
1166 | wake_up(&osb->osb_mount_event); | |
1167 | mlog_exit(status); | |
1168 | return status; | |
1169 | } | |
1170 | } | |
1171 | ||
1172 | ocfs2_complete_quota_recovery(osb); | |
1173 | ||
1174 | /* Now we wake up again for processes waiting for quotas */ | |
1175 | atomic_set(&osb->vol_state, VOLUME_MOUNTED_QUOTAS); | |
1176 | wake_up(&osb->osb_mount_event); | |
1177 | ||
ccd979bd MF |
1178 | mlog_exit(status); |
1179 | return status; | |
1180 | ||
1181 | read_super_error: | |
a81cb88b | 1182 | brelse(bh); |
ccd979bd MF |
1183 | |
1184 | if (inode) | |
1185 | iput(inode); | |
1186 | ||
1187 | if (osb) { | |
1188 | atomic_set(&osb->vol_state, VOLUME_DISABLED); | |
1189 | wake_up(&osb->osb_mount_event); | |
1190 | ocfs2_dismount_volume(sb, 1); | |
1191 | } | |
1192 | ||
1193 | mlog_exit(status); | |
1194 | return status; | |
1195 | } | |
1196 | ||
454e2398 DH |
1197 | static int ocfs2_get_sb(struct file_system_type *fs_type, |
1198 | int flags, | |
1199 | const char *dev_name, | |
1200 | void *data, | |
1201 | struct vfsmount *mnt) | |
ccd979bd | 1202 | { |
454e2398 DH |
1203 | return get_sb_bdev(fs_type, flags, dev_name, data, ocfs2_fill_super, |
1204 | mnt); | |
ccd979bd MF |
1205 | } |
1206 | ||
1207 | static struct file_system_type ocfs2_fs_type = { | |
1208 | .owner = THIS_MODULE, | |
1209 | .name = "ocfs2", | |
1210 | .get_sb = ocfs2_get_sb, /* is this called when we mount | |
1211 | * the fs? */ | |
1212 | .kill_sb = kill_block_super, /* set to the generic one | |
1213 | * right now, but do we | |
1214 | * need to change that? */ | |
1ba9da2f | 1215 | .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE, |
ccd979bd MF |
1216 | .next = NULL |
1217 | }; | |
1218 | ||
1219 | static int ocfs2_parse_options(struct super_block *sb, | |
1220 | char *options, | |
c0123ade | 1221 | struct mount_options *mopt, |
ccd979bd MF |
1222 | int is_remount) |
1223 | { | |
1224 | int status; | |
1225 | char *p; | |
1226 | ||
1227 | mlog_entry("remount: %d, options: \"%s\"\n", is_remount, | |
1228 | options ? options : "(none)"); | |
1229 | ||
d147b3d6 | 1230 | mopt->commit_interval = 0; |
c0123ade TY |
1231 | mopt->mount_opt = 0; |
1232 | mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; | |
1233 | mopt->slot = OCFS2_INVALID_SLOT; | |
2fbe8d1e | 1234 | mopt->localalloc_opt = OCFS2_DEFAULT_LOCAL_ALLOC_SIZE; |
b61817e1 | 1235 | mopt->cluster_stack[0] = '\0'; |
ccd979bd MF |
1236 | |
1237 | if (!options) { | |
1238 | status = 1; | |
1239 | goto bail; | |
1240 | } | |
1241 | ||
1242 | while ((p = strsep(&options, ",")) != NULL) { | |
1243 | int token, option; | |
1244 | substring_t args[MAX_OPT_ARGS]; | |
1245 | ||
1246 | if (!*p) | |
1247 | continue; | |
1248 | ||
1249 | token = match_token(p, tokens, args); | |
1250 | switch (token) { | |
1251 | case Opt_hb_local: | |
c0123ade | 1252 | mopt->mount_opt |= OCFS2_MOUNT_HB_LOCAL; |
ccd979bd MF |
1253 | break; |
1254 | case Opt_hb_none: | |
c0123ade | 1255 | mopt->mount_opt &= ~OCFS2_MOUNT_HB_LOCAL; |
ccd979bd MF |
1256 | break; |
1257 | case Opt_barrier: | |
1258 | if (match_int(&args[0], &option)) { | |
1259 | status = 0; | |
1260 | goto bail; | |
1261 | } | |
1262 | if (option) | |
c0123ade | 1263 | mopt->mount_opt |= OCFS2_MOUNT_BARRIER; |
ccd979bd | 1264 | else |
c0123ade | 1265 | mopt->mount_opt &= ~OCFS2_MOUNT_BARRIER; |
ccd979bd MF |
1266 | break; |
1267 | case Opt_intr: | |
c0123ade | 1268 | mopt->mount_opt &= ~OCFS2_MOUNT_NOINTR; |
ccd979bd MF |
1269 | break; |
1270 | case Opt_nointr: | |
c0123ade | 1271 | mopt->mount_opt |= OCFS2_MOUNT_NOINTR; |
ccd979bd MF |
1272 | break; |
1273 | case Opt_err_panic: | |
c0123ade | 1274 | mopt->mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; |
ccd979bd MF |
1275 | break; |
1276 | case Opt_err_ro: | |
c0123ade | 1277 | mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC; |
ccd979bd MF |
1278 | break; |
1279 | case Opt_data_ordered: | |
c0123ade | 1280 | mopt->mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK; |
ccd979bd MF |
1281 | break; |
1282 | case Opt_data_writeback: | |
c0123ade | 1283 | mopt->mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK; |
ccd979bd | 1284 | break; |
cf1d6c76 TY |
1285 | case Opt_user_xattr: |
1286 | mopt->mount_opt &= ~OCFS2_MOUNT_NOUSERXATTR; | |
1287 | break; | |
1288 | case Opt_nouser_xattr: | |
1289 | mopt->mount_opt |= OCFS2_MOUNT_NOUSERXATTR; | |
1290 | break; | |
7f1a37e3 TY |
1291 | case Opt_atime_quantum: |
1292 | if (match_int(&args[0], &option)) { | |
1293 | status = 0; | |
1294 | goto bail; | |
1295 | } | |
1296 | if (option >= 0) | |
c0123ade | 1297 | mopt->atime_quantum = option; |
7f1a37e3 | 1298 | break; |
baf4661a SM |
1299 | case Opt_slot: |
1300 | option = 0; | |
1301 | if (match_int(&args[0], &option)) { | |
1302 | status = 0; | |
1303 | goto bail; | |
1304 | } | |
1305 | if (option) | |
c0123ade | 1306 | mopt->slot = (s16)option; |
baf4661a | 1307 | break; |
d147b3d6 MF |
1308 | case Opt_commit: |
1309 | option = 0; | |
1310 | if (match_int(&args[0], &option)) { | |
1311 | status = 0; | |
1312 | goto bail; | |
1313 | } | |
1314 | if (option < 0) | |
1315 | return 0; | |
1316 | if (option == 0) | |
2b4e30fb | 1317 | option = JBD2_DEFAULT_MAX_COMMIT_AGE; |
d147b3d6 MF |
1318 | mopt->commit_interval = HZ * option; |
1319 | break; | |
2fbe8d1e SM |
1320 | case Opt_localalloc: |
1321 | option = 0; | |
1322 | if (match_int(&args[0], &option)) { | |
1323 | status = 0; | |
1324 | goto bail; | |
1325 | } | |
1326 | if (option >= 0 && (option <= ocfs2_local_alloc_size(sb) * 8)) | |
1327 | mopt->localalloc_opt = option; | |
1328 | break; | |
53fc622b MF |
1329 | case Opt_localflocks: |
1330 | /* | |
1331 | * Changing this during remount could race | |
1332 | * flock() requests, or "unbalance" existing | |
1333 | * ones (e.g., a lock is taken in one mode but | |
1334 | * dropped in the other). If users care enough | |
1335 | * to flip locking modes during remount, we | |
1336 | * could add a "local" flag to individual | |
1337 | * flock structures for proper tracking of | |
1338 | * state. | |
1339 | */ | |
1340 | if (!is_remount) | |
1341 | mopt->mount_opt |= OCFS2_MOUNT_LOCALFLOCKS; | |
1342 | break; | |
b61817e1 JB |
1343 | case Opt_stack: |
1344 | /* Check both that the option we were passed | |
1345 | * is of the right length and that it is a proper | |
1346 | * string of the right length. | |
1347 | */ | |
1348 | if (((args[0].to - args[0].from) != | |
1349 | OCFS2_STACK_LABEL_LEN) || | |
1350 | (strnlen(args[0].from, | |
1351 | OCFS2_STACK_LABEL_LEN) != | |
1352 | OCFS2_STACK_LABEL_LEN)) { | |
1353 | mlog(ML_ERROR, | |
1354 | "Invalid cluster_stack option\n"); | |
1355 | status = 0; | |
1356 | goto bail; | |
1357 | } | |
1358 | memcpy(mopt->cluster_stack, args[0].from, | |
1359 | OCFS2_STACK_LABEL_LEN); | |
1360 | mopt->cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0'; | |
1361 | break; | |
12462f1d JB |
1362 | case Opt_inode64: |
1363 | mopt->mount_opt |= OCFS2_MOUNT_INODE64; | |
1364 | break; | |
19ece546 JK |
1365 | case Opt_usrquota: |
1366 | /* We check only on remount, otherwise features | |
1367 | * aren't yet initialized. */ | |
1368 | if (is_remount && !OCFS2_HAS_RO_COMPAT_FEATURE(sb, | |
1369 | OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) { | |
1370 | mlog(ML_ERROR, "User quota requested but " | |
1371 | "filesystem feature is not set\n"); | |
1372 | status = 0; | |
1373 | goto bail; | |
1374 | } | |
1375 | mopt->mount_opt |= OCFS2_MOUNT_USRQUOTA; | |
1376 | break; | |
1377 | case Opt_grpquota: | |
1378 | if (is_remount && !OCFS2_HAS_RO_COMPAT_FEATURE(sb, | |
1379 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) { | |
1380 | mlog(ML_ERROR, "Group quota requested but " | |
1381 | "filesystem feature is not set\n"); | |
1382 | status = 0; | |
1383 | goto bail; | |
1384 | } | |
1385 | mopt->mount_opt |= OCFS2_MOUNT_GRPQUOTA; | |
1386 | break; | |
a68979b8 TY |
1387 | #ifdef CONFIG_OCFS2_FS_POSIX_ACL |
1388 | case Opt_acl: | |
1389 | mopt->mount_opt |= OCFS2_MOUNT_POSIX_ACL; | |
1390 | break; | |
1391 | case Opt_noacl: | |
1392 | mopt->mount_opt &= ~OCFS2_MOUNT_POSIX_ACL; | |
1393 | break; | |
1394 | #else | |
1395 | case Opt_acl: | |
1396 | case Opt_noacl: | |
1397 | printk(KERN_INFO "ocfs2 (no)acl options not supported\n"); | |
1398 | break; | |
1399 | #endif | |
ccd979bd MF |
1400 | default: |
1401 | mlog(ML_ERROR, | |
1402 | "Unrecognized mount option \"%s\" " | |
1403 | "or missing value\n", p); | |
1404 | status = 0; | |
1405 | goto bail; | |
1406 | } | |
1407 | } | |
1408 | ||
1409 | status = 1; | |
1410 | ||
1411 | bail: | |
1412 | mlog_exit(status); | |
1413 | return status; | |
1414 | } | |
1415 | ||
d550071c SM |
1416 | static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt) |
1417 | { | |
1418 | struct ocfs2_super *osb = OCFS2_SB(mnt->mnt_sb); | |
1419 | unsigned long opts = osb->s_mount_opt; | |
ebcee4b5 | 1420 | unsigned int local_alloc_megs; |
d550071c SM |
1421 | |
1422 | if (opts & OCFS2_MOUNT_HB_LOCAL) | |
1423 | seq_printf(s, ",_netdev,heartbeat=local"); | |
1424 | else | |
1425 | seq_printf(s, ",heartbeat=none"); | |
1426 | ||
1427 | if (opts & OCFS2_MOUNT_NOINTR) | |
1428 | seq_printf(s, ",nointr"); | |
1429 | ||
1430 | if (opts & OCFS2_MOUNT_DATA_WRITEBACK) | |
1431 | seq_printf(s, ",data=writeback"); | |
1432 | else | |
1433 | seq_printf(s, ",data=ordered"); | |
1434 | ||
1435 | if (opts & OCFS2_MOUNT_BARRIER) | |
1436 | seq_printf(s, ",barrier=1"); | |
1437 | ||
1438 | if (opts & OCFS2_MOUNT_ERRORS_PANIC) | |
1439 | seq_printf(s, ",errors=panic"); | |
1440 | else | |
1441 | seq_printf(s, ",errors=remount-ro"); | |
1442 | ||
1443 | if (osb->preferred_slot != OCFS2_INVALID_SLOT) | |
1444 | seq_printf(s, ",preferred_slot=%d", osb->preferred_slot); | |
1445 | ||
1446 | if (osb->s_atime_quantum != OCFS2_DEFAULT_ATIME_QUANTUM) | |
1447 | seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum); | |
1448 | ||
d147b3d6 MF |
1449 | if (osb->osb_commit_interval) |
1450 | seq_printf(s, ",commit=%u", | |
1451 | (unsigned) (osb->osb_commit_interval / HZ)); | |
1452 | ||
ebcee4b5 MF |
1453 | local_alloc_megs = osb->local_alloc_bits >> (20 - osb->s_clustersize_bits); |
1454 | if (local_alloc_megs != OCFS2_DEFAULT_LOCAL_ALLOC_SIZE) | |
1455 | seq_printf(s, ",localalloc=%d", local_alloc_megs); | |
2fbe8d1e | 1456 | |
53fc622b MF |
1457 | if (opts & OCFS2_MOUNT_LOCALFLOCKS) |
1458 | seq_printf(s, ",localflocks,"); | |
1459 | ||
b61817e1 JB |
1460 | if (osb->osb_cluster_stack[0]) |
1461 | seq_printf(s, ",cluster_stack=%.*s", OCFS2_STACK_LABEL_LEN, | |
1462 | osb->osb_cluster_stack); | |
19ece546 JK |
1463 | if (opts & OCFS2_MOUNT_USRQUOTA) |
1464 | seq_printf(s, ",usrquota"); | |
1465 | if (opts & OCFS2_MOUNT_GRPQUOTA) | |
1466 | seq_printf(s, ",grpquota"); | |
b61817e1 | 1467 | |
b0f73cfc SM |
1468 | if (opts & OCFS2_MOUNT_NOUSERXATTR) |
1469 | seq_printf(s, ",nouser_xattr"); | |
1470 | else | |
1471 | seq_printf(s, ",user_xattr"); | |
1472 | ||
12462f1d JB |
1473 | if (opts & OCFS2_MOUNT_INODE64) |
1474 | seq_printf(s, ",inode64"); | |
1475 | ||
a68979b8 TY |
1476 | #ifdef CONFIG_OCFS2_FS_POSIX_ACL |
1477 | if (opts & OCFS2_MOUNT_POSIX_ACL) | |
1478 | seq_printf(s, ",acl"); | |
1479 | else | |
1480 | seq_printf(s, ",noacl"); | |
1481 | #endif | |
1482 | ||
d550071c SM |
1483 | return 0; |
1484 | } | |
1485 | ||
ccd979bd MF |
1486 | static int __init ocfs2_init(void) |
1487 | { | |
1488 | int status; | |
1489 | ||
1490 | mlog_entry_void(); | |
1491 | ||
1492 | ocfs2_print_version(); | |
1493 | ||
ccd979bd MF |
1494 | status = init_ocfs2_uptodate_cache(); |
1495 | if (status < 0) { | |
1496 | mlog_errno(status); | |
1497 | goto leave; | |
1498 | } | |
1499 | ||
1500 | status = ocfs2_initialize_mem_caches(); | |
1501 | if (status < 0) { | |
1502 | mlog_errno(status); | |
1503 | goto leave; | |
1504 | } | |
1505 | ||
1506 | ocfs2_wq = create_singlethread_workqueue("ocfs2_wq"); | |
1507 | if (!ocfs2_wq) { | |
1508 | status = -ENOMEM; | |
1509 | goto leave; | |
1510 | } | |
1511 | ||
ccd979bd MF |
1512 | ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL); |
1513 | if (!ocfs2_debugfs_root) { | |
1514 | status = -EFAULT; | |
1515 | mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n"); | |
1516 | } | |
1517 | ||
171bf93c MF |
1518 | status = ocfs2_quota_setup(); |
1519 | if (status) | |
1520 | goto leave; | |
1521 | ||
63e0c48a JB |
1522 | ocfs2_set_locking_protocol(); |
1523 | ||
9e33d69f | 1524 | status = register_quota_format(&ocfs2_quota_format); |
ccd979bd MF |
1525 | leave: |
1526 | if (status < 0) { | |
171bf93c | 1527 | ocfs2_quota_shutdown(); |
ccd979bd MF |
1528 | ocfs2_free_mem_caches(); |
1529 | exit_ocfs2_uptodate_cache(); | |
ccd979bd MF |
1530 | } |
1531 | ||
1532 | mlog_exit(status); | |
1533 | ||
1534 | if (status >= 0) { | |
1535 | return register_filesystem(&ocfs2_fs_type); | |
1536 | } else | |
1537 | return -1; | |
1538 | } | |
1539 | ||
1540 | static void __exit ocfs2_exit(void) | |
1541 | { | |
1542 | mlog_entry_void(); | |
1543 | ||
171bf93c MF |
1544 | ocfs2_quota_shutdown(); |
1545 | ||
ccd979bd MF |
1546 | if (ocfs2_wq) { |
1547 | flush_workqueue(ocfs2_wq); | |
1548 | destroy_workqueue(ocfs2_wq); | |
1549 | } | |
1550 | ||
9e33d69f JK |
1551 | unregister_quota_format(&ocfs2_quota_format); |
1552 | ||
ccd979bd MF |
1553 | debugfs_remove(ocfs2_debugfs_root); |
1554 | ||
1555 | ocfs2_free_mem_caches(); | |
1556 | ||
1557 | unregister_filesystem(&ocfs2_fs_type); | |
1558 | ||
ccd979bd MF |
1559 | exit_ocfs2_uptodate_cache(); |
1560 | ||
1561 | mlog_exit_void(); | |
1562 | } | |
1563 | ||
1564 | static void ocfs2_put_super(struct super_block *sb) | |
1565 | { | |
1566 | mlog_entry("(0x%p)\n", sb); | |
1567 | ||
6cfd0148 CH |
1568 | lock_kernel(); |
1569 | ||
ccd979bd MF |
1570 | ocfs2_sync_blockdev(sb); |
1571 | ocfs2_dismount_volume(sb, 0); | |
1572 | ||
6cfd0148 CH |
1573 | unlock_kernel(); |
1574 | ||
ccd979bd MF |
1575 | mlog_exit_void(); |
1576 | } | |
1577 | ||
726c3342 | 1578 | static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf) |
ccd979bd MF |
1579 | { |
1580 | struct ocfs2_super *osb; | |
1581 | u32 numbits, freebits; | |
1582 | int status; | |
1583 | struct ocfs2_dinode *bm_lock; | |
1584 | struct buffer_head *bh = NULL; | |
1585 | struct inode *inode = NULL; | |
1586 | ||
726c3342 | 1587 | mlog_entry("(%p, %p)\n", dentry->d_sb, buf); |
ccd979bd | 1588 | |
726c3342 | 1589 | osb = OCFS2_SB(dentry->d_sb); |
ccd979bd MF |
1590 | |
1591 | inode = ocfs2_get_system_file_inode(osb, | |
1592 | GLOBAL_BITMAP_SYSTEM_INODE, | |
1593 | OCFS2_INVALID_SLOT); | |
1594 | if (!inode) { | |
1595 | mlog(ML_ERROR, "failed to get bitmap inode\n"); | |
1596 | status = -EIO; | |
1597 | goto bail; | |
1598 | } | |
1599 | ||
e63aecb6 | 1600 | status = ocfs2_inode_lock(inode, &bh, 0); |
ccd979bd MF |
1601 | if (status < 0) { |
1602 | mlog_errno(status); | |
1603 | goto bail; | |
1604 | } | |
1605 | ||
1606 | bm_lock = (struct ocfs2_dinode *) bh->b_data; | |
1607 | ||
1608 | numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total); | |
1609 | freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used); | |
1610 | ||
1611 | buf->f_type = OCFS2_SUPER_MAGIC; | |
726c3342 | 1612 | buf->f_bsize = dentry->d_sb->s_blocksize; |
ccd979bd MF |
1613 | buf->f_namelen = OCFS2_MAX_FILENAME_LEN; |
1614 | buf->f_blocks = ((sector_t) numbits) * | |
1615 | (osb->s_clustersize >> osb->sb->s_blocksize_bits); | |
1616 | buf->f_bfree = ((sector_t) freebits) * | |
1617 | (osb->s_clustersize >> osb->sb->s_blocksize_bits); | |
1618 | buf->f_bavail = buf->f_bfree; | |
1619 | buf->f_files = numbits; | |
1620 | buf->f_ffree = freebits; | |
1621 | ||
1622 | brelse(bh); | |
1623 | ||
e63aecb6 | 1624 | ocfs2_inode_unlock(inode, 0); |
ccd979bd MF |
1625 | status = 0; |
1626 | bail: | |
1627 | if (inode) | |
1628 | iput(inode); | |
1629 | ||
1630 | mlog_exit(status); | |
1631 | ||
1632 | return status; | |
1633 | } | |
1634 | ||
51cc5068 | 1635 | static void ocfs2_inode_init_once(void *data) |
ccd979bd MF |
1636 | { |
1637 | struct ocfs2_inode_info *oi = data; | |
1638 | ||
a35afb83 CL |
1639 | oi->ip_flags = 0; |
1640 | oi->ip_open_count = 0; | |
1641 | spin_lock_init(&oi->ip_lock); | |
1642 | ocfs2_extent_map_init(&oi->vfs_inode); | |
1643 | INIT_LIST_HEAD(&oi->ip_io_markers); | |
1644 | oi->ip_created_trans = 0; | |
1645 | oi->ip_last_trans = 0; | |
1646 | oi->ip_dir_start_lookup = 0; | |
ccd979bd | 1647 | |
a35afb83 | 1648 | init_rwsem(&oi->ip_alloc_sem); |
cf1d6c76 | 1649 | init_rwsem(&oi->ip_xattr_sem); |
a35afb83 | 1650 | mutex_init(&oi->ip_io_mutex); |
ccd979bd | 1651 | |
a35afb83 CL |
1652 | oi->ip_blkno = 0ULL; |
1653 | oi->ip_clusters = 0; | |
ccd979bd | 1654 | |
a35afb83 | 1655 | ocfs2_lock_res_init_once(&oi->ip_rw_lockres); |
e63aecb6 | 1656 | ocfs2_lock_res_init_once(&oi->ip_inode_lockres); |
a35afb83 | 1657 | ocfs2_lock_res_init_once(&oi->ip_open_lockres); |
ccd979bd | 1658 | |
a35afb83 | 1659 | ocfs2_metadata_cache_init(&oi->vfs_inode); |
ccd979bd | 1660 | |
a35afb83 | 1661 | inode_init_once(&oi->vfs_inode); |
ccd979bd MF |
1662 | } |
1663 | ||
1664 | static int ocfs2_initialize_mem_caches(void) | |
1665 | { | |
1666 | ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache", | |
fffb60f9 PJ |
1667 | sizeof(struct ocfs2_inode_info), |
1668 | 0, | |
1669 | (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| | |
1670 | SLAB_MEM_SPREAD), | |
20c2df83 | 1671 | ocfs2_inode_init_once); |
9e33d69f JK |
1672 | ocfs2_dquot_cachep = kmem_cache_create("ocfs2_dquot_cache", |
1673 | sizeof(struct ocfs2_dquot), | |
1674 | 0, | |
1675 | (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| | |
1676 | SLAB_MEM_SPREAD), | |
1677 | NULL); | |
1678 | ocfs2_qf_chunk_cachep = kmem_cache_create("ocfs2_qf_chunk_cache", | |
1679 | sizeof(struct ocfs2_quota_chunk), | |
1680 | 0, | |
1681 | (SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD), | |
1682 | NULL); | |
1683 | if (!ocfs2_inode_cachep || !ocfs2_dquot_cachep || | |
1684 | !ocfs2_qf_chunk_cachep) { | |
1685 | if (ocfs2_inode_cachep) | |
1686 | kmem_cache_destroy(ocfs2_inode_cachep); | |
1687 | if (ocfs2_dquot_cachep) | |
1688 | kmem_cache_destroy(ocfs2_dquot_cachep); | |
1689 | if (ocfs2_qf_chunk_cachep) | |
1690 | kmem_cache_destroy(ocfs2_qf_chunk_cachep); | |
ccd979bd | 1691 | return -ENOMEM; |
9e33d69f | 1692 | } |
ccd979bd | 1693 | |
ccd979bd MF |
1694 | return 0; |
1695 | } | |
1696 | ||
1697 | static void ocfs2_free_mem_caches(void) | |
1698 | { | |
1699 | if (ocfs2_inode_cachep) | |
1700 | kmem_cache_destroy(ocfs2_inode_cachep); | |
ccd979bd | 1701 | ocfs2_inode_cachep = NULL; |
9e33d69f JK |
1702 | |
1703 | if (ocfs2_dquot_cachep) | |
1704 | kmem_cache_destroy(ocfs2_dquot_cachep); | |
1705 | ocfs2_dquot_cachep = NULL; | |
1706 | ||
1707 | if (ocfs2_qf_chunk_cachep) | |
1708 | kmem_cache_destroy(ocfs2_qf_chunk_cachep); | |
1709 | ocfs2_qf_chunk_cachep = NULL; | |
ccd979bd MF |
1710 | } |
1711 | ||
1712 | static int ocfs2_get_sector(struct super_block *sb, | |
1713 | struct buffer_head **bh, | |
1714 | int block, | |
1715 | int sect_size) | |
1716 | { | |
1717 | if (!sb_set_blocksize(sb, sect_size)) { | |
1718 | mlog(ML_ERROR, "unable to set blocksize\n"); | |
1719 | return -EIO; | |
1720 | } | |
1721 | ||
1722 | *bh = sb_getblk(sb, block); | |
1723 | if (!*bh) { | |
1724 | mlog_errno(-EIO); | |
1725 | return -EIO; | |
1726 | } | |
1727 | lock_buffer(*bh); | |
1728 | if (!buffer_dirty(*bh)) | |
1729 | clear_buffer_uptodate(*bh); | |
1730 | unlock_buffer(*bh); | |
1731 | ll_rw_block(READ, 1, bh); | |
1732 | wait_on_buffer(*bh); | |
28d57d43 | 1733 | if (!buffer_uptodate(*bh)) { |
1734 | mlog_errno(-EIO); | |
1735 | brelse(*bh); | |
1736 | *bh = NULL; | |
1737 | return -EIO; | |
1738 | } | |
1739 | ||
ccd979bd MF |
1740 | return 0; |
1741 | } | |
1742 | ||
ccd979bd MF |
1743 | static int ocfs2_mount_volume(struct super_block *sb) |
1744 | { | |
1745 | int status = 0; | |
1746 | int unlock_super = 0; | |
1747 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
1748 | ||
1749 | mlog_entry_void(); | |
1750 | ||
1751 | if (ocfs2_is_hard_readonly(osb)) | |
1752 | goto leave; | |
1753 | ||
ccd979bd MF |
1754 | status = ocfs2_dlm_init(osb); |
1755 | if (status < 0) { | |
1756 | mlog_errno(status); | |
1757 | goto leave; | |
1758 | } | |
1759 | ||
ccd979bd MF |
1760 | status = ocfs2_super_lock(osb, 1); |
1761 | if (status < 0) { | |
1762 | mlog_errno(status); | |
1763 | goto leave; | |
1764 | } | |
1765 | unlock_super = 1; | |
1766 | ||
1767 | /* This will load up the node map and add ourselves to it. */ | |
1768 | status = ocfs2_find_slot(osb); | |
1769 | if (status < 0) { | |
1770 | mlog_errno(status); | |
1771 | goto leave; | |
1772 | } | |
1773 | ||
ccd979bd MF |
1774 | /* load all node-local system inodes */ |
1775 | status = ocfs2_init_local_system_inodes(osb); | |
1776 | if (status < 0) { | |
1777 | mlog_errno(status); | |
1778 | goto leave; | |
1779 | } | |
1780 | ||
1781 | status = ocfs2_check_volume(osb); | |
1782 | if (status < 0) { | |
1783 | mlog_errno(status); | |
1784 | goto leave; | |
1785 | } | |
1786 | ||
1787 | status = ocfs2_truncate_log_init(osb); | |
06c59bb8 | 1788 | if (status < 0) |
ccd979bd | 1789 | mlog_errno(status); |
c271c5c2 | 1790 | |
ccd979bd MF |
1791 | leave: |
1792 | if (unlock_super) | |
1793 | ocfs2_super_unlock(osb, 1); | |
1794 | ||
1795 | mlog_exit(status); | |
1796 | return status; | |
1797 | } | |
1798 | ||
ccd979bd MF |
1799 | static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err) |
1800 | { | |
286eaa95 | 1801 | int tmp, hangup_needed = 0; |
ccd979bd | 1802 | struct ocfs2_super *osb = NULL; |
c271c5c2 | 1803 | char nodestr[8]; |
ccd979bd MF |
1804 | |
1805 | mlog_entry("(0x%p)\n", sb); | |
1806 | ||
1807 | BUG_ON(!sb); | |
1808 | osb = OCFS2_SB(sb); | |
1809 | BUG_ON(!osb); | |
1810 | ||
50397507 SM |
1811 | debugfs_remove(osb->osb_ctxt); |
1812 | ||
19ece546 JK |
1813 | ocfs2_disable_quotas(osb); |
1814 | ||
ccd979bd MF |
1815 | ocfs2_shutdown_local_alloc(osb); |
1816 | ||
1817 | ocfs2_truncate_log_shutdown(osb); | |
1818 | ||
83273932 SE |
1819 | ocfs2_orphan_scan_stop(osb); |
1820 | ||
553abd04 JB |
1821 | /* This will disable recovery and flush any recovery work. */ |
1822 | ocfs2_recovery_exit(osb); | |
ccd979bd MF |
1823 | |
1824 | ocfs2_journal_shutdown(osb); | |
1825 | ||
1826 | ocfs2_sync_blockdev(sb); | |
1827 | ||
4670c46d JB |
1828 | /* No cluster connection means we've failed during mount, so skip |
1829 | * all the steps which depended on that to complete. */ | |
1830 | if (osb->cconn) { | |
ccd979bd MF |
1831 | tmp = ocfs2_super_lock(osb, 1); |
1832 | if (tmp < 0) { | |
1833 | mlog_errno(tmp); | |
1834 | return; | |
1835 | } | |
19b613d4 | 1836 | } |
ccd979bd | 1837 | |
19b613d4 MF |
1838 | if (osb->slot_num != OCFS2_INVALID_SLOT) |
1839 | ocfs2_put_slot(osb); | |
ccd979bd | 1840 | |
4670c46d | 1841 | if (osb->cconn) |
ccd979bd | 1842 | ocfs2_super_unlock(osb, 1); |
ccd979bd MF |
1843 | |
1844 | ocfs2_release_system_inodes(osb); | |
1845 | ||
6953b4c0 | 1846 | /* |
6953b4c0 JB |
1847 | * If we're dismounting due to mount error, mount.ocfs2 will clean |
1848 | * up heartbeat. If we're a local mount, there is no heartbeat. | |
1849 | * If we failed before we got a uuid_str yet, we can't stop | |
1850 | * heartbeat. Otherwise, do it. | |
1851 | */ | |
1852 | if (!mnt_err && !ocfs2_mount_local(osb) && osb->uuid_str) | |
286eaa95 JB |
1853 | hangup_needed = 1; |
1854 | ||
1855 | if (osb->cconn) | |
1856 | ocfs2_dlm_shutdown(osb, hangup_needed); | |
1857 | ||
73be192b | 1858 | ocfs2_blockcheck_stats_debugfs_remove(&osb->osb_ecc_stats); |
286eaa95 JB |
1859 | debugfs_remove(osb->osb_debug_root); |
1860 | ||
1861 | if (hangup_needed) | |
6953b4c0 | 1862 | ocfs2_cluster_hangup(osb->uuid_str, strlen(osb->uuid_str)); |
ccd979bd MF |
1863 | |
1864 | atomic_set(&osb->vol_state, VOLUME_DISMOUNTED); | |
1865 | ||
c271c5c2 SM |
1866 | if (ocfs2_mount_local(osb)) |
1867 | snprintf(nodestr, sizeof(nodestr), "local"); | |
1868 | else | |
19fdb624 | 1869 | snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num); |
c271c5c2 SM |
1870 | |
1871 | printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %s)\n", | |
1872 | osb->dev_str, nodestr); | |
ccd979bd MF |
1873 | |
1874 | ocfs2_delete_osb(osb); | |
1875 | kfree(osb); | |
1876 | sb->s_dev = 0; | |
1877 | sb->s_fs_info = NULL; | |
1878 | } | |
1879 | ||
1880 | static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid, | |
1881 | unsigned uuid_bytes) | |
1882 | { | |
1883 | int i, ret; | |
1884 | char *ptr; | |
1885 | ||
1886 | BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN); | |
1887 | ||
cd861280 | 1888 | osb->uuid_str = kzalloc(OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL); |
ccd979bd MF |
1889 | if (osb->uuid_str == NULL) |
1890 | return -ENOMEM; | |
1891 | ||
ccd979bd MF |
1892 | for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) { |
1893 | /* print with null */ | |
1894 | ret = snprintf(ptr, 3, "%02X", uuid[i]); | |
1895 | if (ret != 2) /* drop super cleans up */ | |
1896 | return -EINVAL; | |
1897 | /* then only advance past the last char */ | |
1898 | ptr += 2; | |
1899 | } | |
1900 | ||
1901 | return 0; | |
1902 | } | |
1903 | ||
1904 | static int ocfs2_initialize_super(struct super_block *sb, | |
1905 | struct buffer_head *bh, | |
73be192b JB |
1906 | int sector_size, |
1907 | struct ocfs2_blockcheck_stats *stats) | |
ccd979bd | 1908 | { |
bddb8eb3 | 1909 | int status; |
5a254031 MF |
1910 | int i, cbits, bbits; |
1911 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data; | |
ccd979bd | 1912 | struct inode *inode = NULL; |
ccd979bd MF |
1913 | struct ocfs2_journal *journal; |
1914 | __le32 uuid_net_key; | |
1915 | struct ocfs2_super *osb; | |
1916 | ||
1917 | mlog_entry_void(); | |
1918 | ||
cd861280 | 1919 | osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL); |
ccd979bd MF |
1920 | if (!osb) { |
1921 | status = -ENOMEM; | |
1922 | mlog_errno(status); | |
1923 | goto bail; | |
1924 | } | |
1925 | ||
1926 | sb->s_fs_info = osb; | |
1927 | sb->s_op = &ocfs2_sops; | |
1928 | sb->s_export_op = &ocfs2_export_ops; | |
19ece546 JK |
1929 | sb->s_qcop = &ocfs2_quotactl_ops; |
1930 | sb->dq_op = &ocfs2_quota_operations; | |
cf1d6c76 | 1931 | sb->s_xattr = ocfs2_xattr_handlers; |
e0dceaf0 | 1932 | sb->s_time_gran = 1; |
ccd979bd MF |
1933 | sb->s_flags |= MS_NOATIME; |
1934 | /* this is needed to support O_LARGEFILE */ | |
5a254031 MF |
1935 | cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits); |
1936 | bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits); | |
1937 | sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits); | |
ccd979bd | 1938 | |
9b7895ef MF |
1939 | osb->osb_dx_mask = (1 << (cbits - bbits)) - 1; |
1940 | ||
1941 | for (i = 0; i < 3; i++) | |
1942 | osb->osb_dx_seed[i] = le32_to_cpu(di->id2.i_super.s_dx_seed[i]); | |
1943 | osb->osb_dx_seed[3] = le32_to_cpu(di->id2.i_super.s_uuid_hash); | |
1944 | ||
ccd979bd MF |
1945 | osb->sb = sb; |
1946 | /* Save off for ocfs2_rw_direct */ | |
1947 | osb->s_sectsize_bits = blksize_bits(sector_size); | |
ebdec83b | 1948 | BUG_ON(!osb->s_sectsize_bits); |
ccd979bd | 1949 | |
34d024f8 MF |
1950 | spin_lock_init(&osb->dc_task_lock); |
1951 | init_waitqueue_head(&osb->dc_event); | |
1952 | osb->dc_work_sequence = 0; | |
1953 | osb->dc_wake_sequence = 0; | |
ccd979bd MF |
1954 | INIT_LIST_HEAD(&osb->blocked_lock_list); |
1955 | osb->blocked_lock_count = 0; | |
ccd979bd | 1956 | spin_lock_init(&osb->osb_lock); |
c8b9cf9a | 1957 | spin_lock_init(&osb->osb_xattr_lock); |
4d0ddb2c | 1958 | ocfs2_init_inode_steal_slot(osb); |
ccd979bd MF |
1959 | |
1960 | atomic_set(&osb->alloc_stats.moves, 0); | |
1961 | atomic_set(&osb->alloc_stats.local_data, 0); | |
1962 | atomic_set(&osb->alloc_stats.bitmap_data, 0); | |
1963 | atomic_set(&osb->alloc_stats.bg_allocs, 0); | |
1964 | atomic_set(&osb->alloc_stats.bg_extends, 0); | |
1965 | ||
73be192b JB |
1966 | /* Copy the blockcheck stats from the superblock probe */ |
1967 | osb->osb_ecc_stats = *stats; | |
1968 | ||
ccd979bd MF |
1969 | ocfs2_init_node_maps(osb); |
1970 | ||
1971 | snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u", | |
1972 | MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); | |
1973 | ||
553abd04 JB |
1974 | status = ocfs2_recovery_init(osb); |
1975 | if (status) { | |
1976 | mlog(ML_ERROR, "Unable to initialize recovery state\n"); | |
1977 | mlog_errno(status); | |
1978 | goto bail; | |
1979 | } | |
ccd979bd | 1980 | |
83273932 SE |
1981 | status = ocfs2_orphan_scan_init(osb); |
1982 | if (status) { | |
1983 | mlog(ML_ERROR, "Unable to initialize delayed orphan scan\n"); | |
1984 | mlog_errno(status); | |
1985 | goto bail; | |
1986 | } | |
1987 | ||
ccd979bd MF |
1988 | init_waitqueue_head(&osb->checkpoint_event); |
1989 | atomic_set(&osb->needs_checkpoint, 0); | |
1990 | ||
7f1a37e3 TY |
1991 | osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; |
1992 | ||
ccd979bd MF |
1993 | osb->slot_num = OCFS2_INVALID_SLOT; |
1994 | ||
8154da3d TY |
1995 | osb->s_xattr_inline_size = le16_to_cpu( |
1996 | di->id2.i_super.s_xattr_inline_size); | |
fdd77704 | 1997 | |
ccd979bd MF |
1998 | osb->local_alloc_state = OCFS2_LA_UNUSED; |
1999 | osb->local_alloc_bh = NULL; | |
9c7af40b | 2000 | INIT_DELAYED_WORK(&osb->la_enable_wq, ocfs2_la_enable_worker); |
ccd979bd | 2001 | |
ccd979bd MF |
2002 | init_waitqueue_head(&osb->osb_mount_event); |
2003 | ||
2004 | osb->vol_label = kmalloc(OCFS2_MAX_VOL_LABEL_LEN, GFP_KERNEL); | |
2005 | if (!osb->vol_label) { | |
2006 | mlog(ML_ERROR, "unable to alloc vol label\n"); | |
2007 | status = -ENOMEM; | |
2008 | goto bail; | |
2009 | } | |
2010 | ||
ccd979bd MF |
2011 | osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots); |
2012 | if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) { | |
2013 | mlog(ML_ERROR, "Invalid number of node slots (%u)\n", | |
2014 | osb->max_slots); | |
2015 | status = -EINVAL; | |
2016 | goto bail; | |
2017 | } | |
781ee3e2 | 2018 | mlog(0, "max_slots for this device: %u\n", osb->max_slots); |
ccd979bd | 2019 | |
539d8264 SM |
2020 | osb->slot_recovery_generations = |
2021 | kcalloc(osb->max_slots, sizeof(*osb->slot_recovery_generations), | |
2022 | GFP_KERNEL); | |
2023 | if (!osb->slot_recovery_generations) { | |
2024 | status = -ENOMEM; | |
2025 | mlog_errno(status); | |
2026 | goto bail; | |
2027 | } | |
2028 | ||
b4df6ed8 MF |
2029 | init_waitqueue_head(&osb->osb_wipe_event); |
2030 | osb->osb_orphan_wipes = kcalloc(osb->max_slots, | |
2031 | sizeof(*osb->osb_orphan_wipes), | |
2032 | GFP_KERNEL); | |
2033 | if (!osb->osb_orphan_wipes) { | |
2034 | status = -ENOMEM; | |
2035 | mlog_errno(status); | |
2036 | goto bail; | |
2037 | } | |
2038 | ||
ccd979bd MF |
2039 | osb->s_feature_compat = |
2040 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_compat); | |
2041 | osb->s_feature_ro_compat = | |
2042 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_ro_compat); | |
2043 | osb->s_feature_incompat = | |
2044 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_incompat); | |
2045 | ||
2046 | if ((i = OCFS2_HAS_INCOMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_INCOMPAT_SUPP))) { | |
2047 | mlog(ML_ERROR, "couldn't mount because of unsupported " | |
2048 | "optional features (%x).\n", i); | |
2049 | status = -EINVAL; | |
2050 | goto bail; | |
2051 | } | |
2052 | if (!(osb->sb->s_flags & MS_RDONLY) && | |
2053 | (i = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP))) { | |
2054 | mlog(ML_ERROR, "couldn't mount RDWR because of " | |
2055 | "unsupported optional features (%x).\n", i); | |
2056 | status = -EINVAL; | |
2057 | goto bail; | |
2058 | } | |
2059 | ||
b61817e1 JB |
2060 | if (ocfs2_userspace_stack(osb)) { |
2061 | memcpy(osb->osb_cluster_stack, | |
2062 | OCFS2_RAW_SB(di)->s_cluster_info.ci_stack, | |
2063 | OCFS2_STACK_LABEL_LEN); | |
2064 | osb->osb_cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0'; | |
2065 | if (strlen(osb->osb_cluster_stack) != OCFS2_STACK_LABEL_LEN) { | |
2066 | mlog(ML_ERROR, | |
2067 | "couldn't mount because of an invalid " | |
2068 | "cluster stack label (%s) \n", | |
2069 | osb->osb_cluster_stack); | |
2070 | status = -EINVAL; | |
2071 | goto bail; | |
2072 | } | |
2073 | } else { | |
2074 | /* The empty string is identical with classic tools that | |
2075 | * don't know about s_cluster_info. */ | |
2076 | osb->osb_cluster_stack[0] = '\0'; | |
2077 | } | |
2078 | ||
ccd979bd MF |
2079 | get_random_bytes(&osb->s_next_generation, sizeof(u32)); |
2080 | ||
2081 | /* FIXME | |
2082 | * This should be done in ocfs2_journal_init(), but unknown | |
2083 | * ordering issues will cause the filesystem to crash. | |
2084 | * If anyone wants to figure out what part of the code | |
2085 | * refers to osb->journal before ocfs2_journal_init() is run, | |
2086 | * be my guest. | |
2087 | */ | |
2088 | /* initialize our journal structure */ | |
2089 | ||
cd861280 | 2090 | journal = kzalloc(sizeof(struct ocfs2_journal), GFP_KERNEL); |
ccd979bd MF |
2091 | if (!journal) { |
2092 | mlog(ML_ERROR, "unable to alloc journal\n"); | |
2093 | status = -ENOMEM; | |
2094 | goto bail; | |
2095 | } | |
2096 | osb->journal = journal; | |
2097 | journal->j_osb = osb; | |
2098 | ||
2099 | atomic_set(&journal->j_num_trans, 0); | |
2100 | init_rwsem(&journal->j_trans_barrier); | |
2101 | init_waitqueue_head(&journal->j_checkpointed); | |
2102 | spin_lock_init(&journal->j_lock); | |
2103 | journal->j_trans_id = (unsigned long) 1; | |
2104 | INIT_LIST_HEAD(&journal->j_la_cleanups); | |
c4028958 | 2105 | INIT_WORK(&journal->j_recovery_work, ocfs2_complete_recovery); |
ccd979bd MF |
2106 | journal->j_state = OCFS2_JOURNAL_FREE; |
2107 | ||
ea455f8a JK |
2108 | INIT_WORK(&osb->dentry_lock_work, ocfs2_drop_dl_inodes); |
2109 | osb->dentry_lock_list = NULL; | |
2110 | ||
ccd979bd MF |
2111 | /* get some pseudo constants for clustersize bits */ |
2112 | osb->s_clustersize_bits = | |
2113 | le32_to_cpu(di->id2.i_super.s_clustersize_bits); | |
2114 | osb->s_clustersize = 1 << osb->s_clustersize_bits; | |
2115 | mlog(0, "clusterbits=%d\n", osb->s_clustersize_bits); | |
2116 | ||
2117 | if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE || | |
2118 | osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) { | |
2119 | mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n", | |
2120 | osb->s_clustersize); | |
2121 | status = -EINVAL; | |
2122 | goto bail; | |
2123 | } | |
2124 | ||
2125 | if (ocfs2_clusters_to_blocks(osb->sb, le32_to_cpu(di->i_clusters) - 1) | |
2126 | > (u32)~0UL) { | |
2127 | mlog(ML_ERROR, "Volume might try to write to blocks beyond " | |
2128 | "what jbd can address in 32 bits.\n"); | |
2129 | status = -EINVAL; | |
2130 | goto bail; | |
2131 | } | |
2132 | ||
2133 | if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid, | |
2134 | sizeof(di->id2.i_super.s_uuid))) { | |
2135 | mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n"); | |
2136 | status = -ENOMEM; | |
2137 | goto bail; | |
2138 | } | |
2139 | ||
78427043 | 2140 | memcpy(&uuid_net_key, di->id2.i_super.s_uuid, sizeof(uuid_net_key)); |
ccd979bd MF |
2141 | |
2142 | strncpy(osb->vol_label, di->id2.i_super.s_label, 63); | |
2143 | osb->vol_label[63] = '\0'; | |
2144 | osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno); | |
2145 | osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno); | |
2146 | osb->first_cluster_group_blkno = | |
2147 | le64_to_cpu(di->id2.i_super.s_first_cluster_group); | |
2148 | osb->fs_generation = le32_to_cpu(di->i_fs_generation); | |
cf1d6c76 | 2149 | osb->uuid_hash = le32_to_cpu(di->id2.i_super.s_uuid_hash); |
ccd979bd MF |
2150 | mlog(0, "vol_label: %s\n", osb->vol_label); |
2151 | mlog(0, "uuid: %s\n", osb->uuid_str); | |
b0697053 MF |
2152 | mlog(0, "root_blkno=%llu, system_dir_blkno=%llu\n", |
2153 | (unsigned long long)osb->root_blkno, | |
2154 | (unsigned long long)osb->system_dir_blkno); | |
ccd979bd MF |
2155 | |
2156 | osb->osb_dlm_debug = ocfs2_new_dlm_debug(); | |
2157 | if (!osb->osb_dlm_debug) { | |
2158 | status = -ENOMEM; | |
2159 | mlog_errno(status); | |
2160 | goto bail; | |
2161 | } | |
2162 | ||
2163 | atomic_set(&osb->vol_state, VOLUME_INIT); | |
2164 | ||
2165 | /* load root, system_dir, and all global system inodes */ | |
2166 | status = ocfs2_init_global_system_inodes(osb); | |
2167 | if (status < 0) { | |
2168 | mlog_errno(status); | |
2169 | goto bail; | |
2170 | } | |
2171 | ||
2172 | /* | |
2173 | * global bitmap | |
2174 | */ | |
2175 | inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE, | |
2176 | OCFS2_INVALID_SLOT); | |
2177 | if (!inode) { | |
2178 | status = -EINVAL; | |
2179 | mlog_errno(status); | |
2180 | goto bail; | |
2181 | } | |
2182 | ||
2183 | osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno; | |
ccd979bd | 2184 | iput(inode); |
ccd979bd | 2185 | |
e9d578a8 | 2186 | osb->bitmap_cpg = ocfs2_group_bitmap_size(sb) * 8; |
ccd979bd MF |
2187 | |
2188 | status = ocfs2_init_slot_info(osb); | |
2189 | if (status < 0) { | |
2190 | mlog_errno(status); | |
2191 | goto bail; | |
2192 | } | |
2193 | ||
ccd979bd MF |
2194 | bail: |
2195 | mlog_exit(status); | |
2196 | return status; | |
2197 | } | |
2198 | ||
2199 | /* | |
2200 | * will return: -EAGAIN if it is ok to keep searching for superblocks | |
2201 | * -EINVAL if there is a bad superblock | |
2202 | * 0 on success | |
2203 | */ | |
2204 | static int ocfs2_verify_volume(struct ocfs2_dinode *di, | |
2205 | struct buffer_head *bh, | |
73be192b JB |
2206 | u32 blksz, |
2207 | struct ocfs2_blockcheck_stats *stats) | |
ccd979bd MF |
2208 | { |
2209 | int status = -EAGAIN; | |
2210 | ||
2211 | mlog_entry_void(); | |
2212 | ||
2213 | if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE, | |
2214 | strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) { | |
d030cc97 JB |
2215 | /* We have to do a raw check of the feature here */ |
2216 | if (le32_to_cpu(di->id2.i_super.s_feature_incompat) & | |
2217 | OCFS2_FEATURE_INCOMPAT_META_ECC) { | |
2218 | status = ocfs2_block_check_validate(bh->b_data, | |
2219 | bh->b_size, | |
73be192b JB |
2220 | &di->i_check, |
2221 | stats); | |
d030cc97 JB |
2222 | if (status) |
2223 | goto out; | |
2224 | } | |
ccd979bd MF |
2225 | status = -EINVAL; |
2226 | if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) { | |
2227 | mlog(ML_ERROR, "found superblock with incorrect block " | |
2228 | "size: found %u, should be %u\n", | |
2229 | 1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits), | |
2230 | blksz); | |
2231 | } else if (le16_to_cpu(di->id2.i_super.s_major_rev_level) != | |
2232 | OCFS2_MAJOR_REV_LEVEL || | |
2233 | le16_to_cpu(di->id2.i_super.s_minor_rev_level) != | |
2234 | OCFS2_MINOR_REV_LEVEL) { | |
2235 | mlog(ML_ERROR, "found superblock with bad version: " | |
2236 | "found %u.%u, should be %u.%u\n", | |
2237 | le16_to_cpu(di->id2.i_super.s_major_rev_level), | |
2238 | le16_to_cpu(di->id2.i_super.s_minor_rev_level), | |
2239 | OCFS2_MAJOR_REV_LEVEL, | |
2240 | OCFS2_MINOR_REV_LEVEL); | |
2241 | } else if (bh->b_blocknr != le64_to_cpu(di->i_blkno)) { | |
2242 | mlog(ML_ERROR, "bad block number on superblock: " | |
b0697053 | 2243 | "found %llu, should be %llu\n", |
1ca1a111 | 2244 | (unsigned long long)le64_to_cpu(di->i_blkno), |
b0697053 | 2245 | (unsigned long long)bh->b_blocknr); |
ccd979bd MF |
2246 | } else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 || |
2247 | le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) { | |
2248 | mlog(ML_ERROR, "bad cluster size found: %u\n", | |
2249 | 1 << le32_to_cpu(di->id2.i_super.s_clustersize_bits)); | |
2250 | } else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) { | |
2251 | mlog(ML_ERROR, "bad root_blkno: 0\n"); | |
2252 | } else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) { | |
2253 | mlog(ML_ERROR, "bad system_dir_blkno: 0\n"); | |
2254 | } else if (le16_to_cpu(di->id2.i_super.s_max_slots) > OCFS2_MAX_SLOTS) { | |
2255 | mlog(ML_ERROR, | |
2256 | "Superblock slots found greater than file system " | |
2257 | "maximum: found %u, max %u\n", | |
2258 | le16_to_cpu(di->id2.i_super.s_max_slots), | |
2259 | OCFS2_MAX_SLOTS); | |
2260 | } else { | |
2261 | /* found it! */ | |
2262 | status = 0; | |
2263 | } | |
2264 | } | |
2265 | ||
d030cc97 | 2266 | out: |
ccd979bd MF |
2267 | mlog_exit(status); |
2268 | return status; | |
2269 | } | |
2270 | ||
2271 | static int ocfs2_check_volume(struct ocfs2_super *osb) | |
2272 | { | |
bddb8eb3 | 2273 | int status; |
ccd979bd | 2274 | int dirty; |
c271c5c2 | 2275 | int local; |
ccd979bd MF |
2276 | struct ocfs2_dinode *local_alloc = NULL; /* only used if we |
2277 | * recover | |
2278 | * ourselves. */ | |
2279 | ||
2280 | mlog_entry_void(); | |
2281 | ||
2282 | /* Init our journal object. */ | |
2283 | status = ocfs2_journal_init(osb->journal, &dirty); | |
2284 | if (status < 0) { | |
2285 | mlog(ML_ERROR, "Could not initialize journal!\n"); | |
2286 | goto finally; | |
2287 | } | |
2288 | ||
2289 | /* If the journal was unmounted cleanly then we don't want to | |
2290 | * recover anything. Otherwise, journal_load will do that | |
2291 | * dirty work for us :) */ | |
2292 | if (!dirty) { | |
2293 | status = ocfs2_journal_wipe(osb->journal, 0); | |
2294 | if (status < 0) { | |
2295 | mlog_errno(status); | |
2296 | goto finally; | |
2297 | } | |
2298 | } else { | |
2299 | mlog(ML_NOTICE, "File system was not unmounted cleanly, " | |
2300 | "recovering volume.\n"); | |
2301 | } | |
2302 | ||
c271c5c2 SM |
2303 | local = ocfs2_mount_local(osb); |
2304 | ||
ccd979bd | 2305 | /* will play back anything left in the journal. */ |
539d8264 | 2306 | status = ocfs2_journal_load(osb->journal, local, dirty); |
01af4820 WW |
2307 | if (status < 0) { |
2308 | mlog(ML_ERROR, "ocfs2 journal load failed! %d\n", status); | |
2309 | goto finally; | |
2310 | } | |
ccd979bd MF |
2311 | |
2312 | if (dirty) { | |
2313 | /* recover my local alloc if we didn't unmount cleanly. */ | |
2314 | status = ocfs2_begin_local_alloc_recovery(osb, | |
2315 | osb->slot_num, | |
2316 | &local_alloc); | |
2317 | if (status < 0) { | |
2318 | mlog_errno(status); | |
2319 | goto finally; | |
2320 | } | |
2321 | /* we complete the recovery process after we've marked | |
2322 | * ourselves as mounted. */ | |
2323 | } | |
2324 | ||
2325 | mlog(0, "Journal loaded.\n"); | |
2326 | ||
2327 | status = ocfs2_load_local_alloc(osb); | |
2328 | if (status < 0) { | |
2329 | mlog_errno(status); | |
2330 | goto finally; | |
2331 | } | |
2332 | ||
2333 | if (dirty) { | |
2334 | /* Recovery will be completed after we've mounted the | |
2335 | * rest of the volume. */ | |
2336 | osb->dirty = 1; | |
2337 | osb->local_alloc_copy = local_alloc; | |
2338 | local_alloc = NULL; | |
2339 | } | |
2340 | ||
2341 | /* go through each journal, trylock it and if you get the | |
2342 | * lock, and it's marked as dirty, set the bit in the recover | |
2343 | * map and launch a recovery thread for it. */ | |
2344 | status = ocfs2_mark_dead_nodes(osb); | |
9140db04 SE |
2345 | if (status < 0) { |
2346 | mlog_errno(status); | |
2347 | goto finally; | |
2348 | } | |
2349 | ||
2350 | status = ocfs2_compute_replay_slots(osb); | |
ccd979bd MF |
2351 | if (status < 0) |
2352 | mlog_errno(status); | |
2353 | ||
2354 | finally: | |
2355 | if (local_alloc) | |
2356 | kfree(local_alloc); | |
2357 | ||
2358 | mlog_exit(status); | |
2359 | return status; | |
2360 | } | |
2361 | ||
2362 | /* | |
2363 | * The routine gets called from dismount or close whenever a dismount on | |
2364 | * volume is requested and the osb open count becomes 1. | |
2365 | * It will remove the osb from the global list and also free up all the | |
2366 | * initialized resources and fileobject. | |
2367 | */ | |
2368 | static void ocfs2_delete_osb(struct ocfs2_super *osb) | |
2369 | { | |
2370 | mlog_entry_void(); | |
2371 | ||
2372 | /* This function assumes that the caller has the main osb resource */ | |
2373 | ||
8e8a4603 | 2374 | ocfs2_free_slot_info(osb); |
ccd979bd | 2375 | |
b4df6ed8 | 2376 | kfree(osb->osb_orphan_wipes); |
539d8264 | 2377 | kfree(osb->slot_recovery_generations); |
ccd979bd MF |
2378 | /* FIXME |
2379 | * This belongs in journal shutdown, but because we have to | |
2380 | * allocate osb->journal at the start of ocfs2_initalize_osb(), | |
2381 | * we free it here. | |
2382 | */ | |
2383 | kfree(osb->journal); | |
2384 | if (osb->local_alloc_copy) | |
2385 | kfree(osb->local_alloc_copy); | |
2386 | kfree(osb->uuid_str); | |
2387 | ocfs2_put_dlm_debug(osb->osb_dlm_debug); | |
2388 | memset(osb, 0, sizeof(struct ocfs2_super)); | |
2389 | ||
2390 | mlog_exit_void(); | |
2391 | } | |
2392 | ||
2393 | /* Put OCFS2 into a readonly state, or (if the user specifies it), | |
2394 | * panic(). We do not support continue-on-error operation. */ | |
2395 | static void ocfs2_handle_error(struct super_block *sb) | |
2396 | { | |
2397 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
2398 | ||
2399 | if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_PANIC) | |
2400 | panic("OCFS2: (device %s): panic forced after error\n", | |
2401 | sb->s_id); | |
2402 | ||
2403 | ocfs2_set_osb_flag(osb, OCFS2_OSB_ERROR_FS); | |
2404 | ||
2405 | if (sb->s_flags & MS_RDONLY && | |
2406 | (ocfs2_is_soft_readonly(osb) || | |
2407 | ocfs2_is_hard_readonly(osb))) | |
2408 | return; | |
2409 | ||
2410 | printk(KERN_CRIT "File system is now read-only due to the potential " | |
2411 | "of on-disk corruption. Please run fsck.ocfs2 once the file " | |
2412 | "system is unmounted.\n"); | |
2413 | sb->s_flags |= MS_RDONLY; | |
2414 | ocfs2_set_ro_flag(osb, 0); | |
2415 | } | |
2416 | ||
2417 | static char error_buf[1024]; | |
2418 | ||
2419 | void __ocfs2_error(struct super_block *sb, | |
2420 | const char *function, | |
2421 | const char *fmt, ...) | |
2422 | { | |
2423 | va_list args; | |
2424 | ||
2425 | va_start(args, fmt); | |
4a6e617a | 2426 | vsnprintf(error_buf, sizeof(error_buf), fmt, args); |
ccd979bd MF |
2427 | va_end(args); |
2428 | ||
2429 | /* Not using mlog here because we want to show the actual | |
2430 | * function the error came from. */ | |
2431 | printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %s\n", | |
2432 | sb->s_id, function, error_buf); | |
2433 | ||
2434 | ocfs2_handle_error(sb); | |
2435 | } | |
2436 | ||
2437 | /* Handle critical errors. This is intentionally more drastic than | |
2438 | * ocfs2_handle_error, so we only use for things like journal errors, | |
2439 | * etc. */ | |
2440 | void __ocfs2_abort(struct super_block* sb, | |
2441 | const char *function, | |
2442 | const char *fmt, ...) | |
2443 | { | |
2444 | va_list args; | |
2445 | ||
2446 | va_start(args, fmt); | |
4a6e617a | 2447 | vsnprintf(error_buf, sizeof(error_buf), fmt, args); |
ccd979bd MF |
2448 | va_end(args); |
2449 | ||
2450 | printk(KERN_CRIT "OCFS2: abort (device %s): %s: %s\n", | |
2451 | sb->s_id, function, error_buf); | |
2452 | ||
2453 | /* We don't have the cluster support yet to go straight to | |
2454 | * hard readonly in here. Until then, we want to keep | |
2455 | * ocfs2_abort() so that we can at least mark critical | |
2456 | * errors. | |
2457 | * | |
2458 | * TODO: This should abort the journal and alert other nodes | |
2459 | * that our slot needs recovery. */ | |
2460 | ||
2461 | /* Force a panic(). This stinks, but it's better than letting | |
2462 | * things continue without having a proper hard readonly | |
2463 | * here. */ | |
2464 | OCFS2_SB(sb)->s_mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; | |
2465 | ocfs2_handle_error(sb); | |
2466 | } | |
2467 | ||
2468 | module_init(ocfs2_init); | |
2469 | module_exit(ocfs2_exit); |