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9
10#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
11
12#include <linux/sched.h>
13#include <linux/slab.h>
14#include <linux/spinlock.h>
15#include <linux/completion.h>
16#include <linux/buffer_head.h>
17#include <linux/blkdev.h>
18#include <linux/kthread.h>
19#include <linux/export.h>
20#include <linux/namei.h>
21#include <linux/mount.h>
22#include <linux/gfs2_ondisk.h>
23#include <linux/quotaops.h>
24#include <linux/lockdep.h>
25#include <linux/module.h>
26#include <linux/backing-dev.h>
27
28#include "gfs2.h"
29#include "incore.h"
30#include "bmap.h"
31#include "glock.h"
32#include "glops.h"
33#include "inode.h"
34#include "recovery.h"
35#include "rgrp.h"
36#include "super.h"
37#include "sys.h"
38#include "util.h"
39#include "log.h"
40#include "quota.h"
41#include "dir.h"
42#include "meta_io.h"
43#include "trace_gfs2.h"
44
45#define DO 0
46#define UNDO 1
47
48
49
50
51
52
53
54static void gfs2_tune_init(struct gfs2_tune *gt)
55{
56 spin_lock_init(>->gt_spin);
57
58 gt->gt_quota_warn_period = 10;
59 gt->gt_quota_scale_num = 1;
60 gt->gt_quota_scale_den = 1;
61 gt->gt_new_files_jdata = 0;
62 gt->gt_max_readahead = BIT(18);
63 gt->gt_complain_secs = 10;
64}
65
66static struct gfs2_sbd *init_sbd(struct super_block *sb)
67{
68 struct gfs2_sbd *sdp;
69 struct address_space *mapping;
70
71 sdp = kzalloc(sizeof(struct gfs2_sbd), GFP_KERNEL);
72 if (!sdp)
73 return NULL;
74
75 sb->s_fs_info = sdp;
76 sdp->sd_vfs = sb;
77 sdp->sd_lkstats = alloc_percpu(struct gfs2_pcpu_lkstats);
78 if (!sdp->sd_lkstats) {
79 kfree(sdp);
80 return NULL;
81 }
82
83 set_bit(SDF_NOJOURNALID, &sdp->sd_flags);
84 gfs2_tune_init(&sdp->sd_tune);
85
86 init_waitqueue_head(&sdp->sd_glock_wait);
87 atomic_set(&sdp->sd_glock_disposal, 0);
88 init_completion(&sdp->sd_locking_init);
89 init_completion(&sdp->sd_wdack);
90 spin_lock_init(&sdp->sd_statfs_spin);
91
92 spin_lock_init(&sdp->sd_rindex_spin);
93 sdp->sd_rindex_tree.rb_node = NULL;
94
95 INIT_LIST_HEAD(&sdp->sd_jindex_list);
96 spin_lock_init(&sdp->sd_jindex_spin);
97 mutex_init(&sdp->sd_jindex_mutex);
98 init_completion(&sdp->sd_journal_ready);
99
100 INIT_LIST_HEAD(&sdp->sd_quota_list);
101 mutex_init(&sdp->sd_quota_mutex);
102 mutex_init(&sdp->sd_quota_sync_mutex);
103 init_waitqueue_head(&sdp->sd_quota_wait);
104 INIT_LIST_HEAD(&sdp->sd_trunc_list);
105 spin_lock_init(&sdp->sd_trunc_lock);
106 spin_lock_init(&sdp->sd_bitmap_lock);
107
108 mapping = &sdp->sd_aspace;
109
110 address_space_init_once(mapping);
111 mapping->a_ops = &gfs2_rgrp_aops;
112 mapping->host = sb->s_bdev->bd_inode;
113 mapping->flags = 0;
114 mapping_set_gfp_mask(mapping, GFP_NOFS);
115 mapping->private_data = NULL;
116 mapping->writeback_index = 0;
117
118 spin_lock_init(&sdp->sd_log_lock);
119 atomic_set(&sdp->sd_log_pinned, 0);
120 INIT_LIST_HEAD(&sdp->sd_log_le_revoke);
121 INIT_LIST_HEAD(&sdp->sd_log_le_ordered);
122 spin_lock_init(&sdp->sd_ordered_lock);
123
124 init_waitqueue_head(&sdp->sd_log_waitq);
125 init_waitqueue_head(&sdp->sd_logd_waitq);
126 spin_lock_init(&sdp->sd_ail_lock);
127 INIT_LIST_HEAD(&sdp->sd_ail1_list);
128 INIT_LIST_HEAD(&sdp->sd_ail2_list);
129
130 init_rwsem(&sdp->sd_log_flush_lock);
131 atomic_set(&sdp->sd_log_in_flight, 0);
132 atomic_set(&sdp->sd_reserving_log, 0);
133 init_waitqueue_head(&sdp->sd_reserving_log_wait);
134 init_waitqueue_head(&sdp->sd_log_flush_wait);
135 atomic_set(&sdp->sd_freeze_state, SFS_UNFROZEN);
136 mutex_init(&sdp->sd_freeze_mutex);
137
138 return sdp;
139}
140
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150
151
152
153static int gfs2_check_sb(struct gfs2_sbd *sdp, int silent)
154{
155 struct gfs2_sb_host *sb = &sdp->sd_sb;
156
157 if (sb->sb_magic != GFS2_MAGIC ||
158 sb->sb_type != GFS2_METATYPE_SB) {
159 if (!silent)
160 pr_warn("not a GFS2 filesystem\n");
161 return -EINVAL;
162 }
163
164
165
166 if (sb->sb_fs_format == GFS2_FORMAT_FS &&
167 sb->sb_multihost_format == GFS2_FORMAT_MULTI)
168 return 0;
169
170 fs_warn(sdp, "Unknown on-disk format, unable to mount\n");
171
172 return -EINVAL;
173}
174
175static void end_bio_io_page(struct bio *bio)
176{
177 struct page *page = bio->bi_private;
178
179 if (!bio->bi_status)
180 SetPageUptodate(page);
181 else
182 pr_warn("error %d reading superblock\n", bio->bi_status);
183 unlock_page(page);
184}
185
186static void gfs2_sb_in(struct gfs2_sbd *sdp, const void *buf)
187{
188 struct gfs2_sb_host *sb = &sdp->sd_sb;
189 struct super_block *s = sdp->sd_vfs;
190 const struct gfs2_sb *str = buf;
191
192 sb->sb_magic = be32_to_cpu(str->sb_header.mh_magic);
193 sb->sb_type = be32_to_cpu(str->sb_header.mh_type);
194 sb->sb_format = be32_to_cpu(str->sb_header.mh_format);
195 sb->sb_fs_format = be32_to_cpu(str->sb_fs_format);
196 sb->sb_multihost_format = be32_to_cpu(str->sb_multihost_format);
197 sb->sb_bsize = be32_to_cpu(str->sb_bsize);
198 sb->sb_bsize_shift = be32_to_cpu(str->sb_bsize_shift);
199 sb->sb_master_dir.no_addr = be64_to_cpu(str->sb_master_dir.no_addr);
200 sb->sb_master_dir.no_formal_ino = be64_to_cpu(str->sb_master_dir.no_formal_ino);
201 sb->sb_root_dir.no_addr = be64_to_cpu(str->sb_root_dir.no_addr);
202 sb->sb_root_dir.no_formal_ino = be64_to_cpu(str->sb_root_dir.no_formal_ino);
203
204 memcpy(sb->sb_lockproto, str->sb_lockproto, GFS2_LOCKNAME_LEN);
205 memcpy(sb->sb_locktable, str->sb_locktable, GFS2_LOCKNAME_LEN);
206 memcpy(&s->s_uuid, str->sb_uuid, 16);
207}
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226
227
228static int gfs2_read_super(struct gfs2_sbd *sdp, sector_t sector, int silent)
229{
230 struct super_block *sb = sdp->sd_vfs;
231 struct gfs2_sb *p;
232 struct page *page;
233 struct bio *bio;
234
235 page = alloc_page(GFP_NOFS);
236 if (unlikely(!page))
237 return -ENOMEM;
238
239 ClearPageUptodate(page);
240 ClearPageDirty(page);
241 lock_page(page);
242
243 bio = bio_alloc(GFP_NOFS, 1);
244 bio->bi_iter.bi_sector = sector * (sb->s_blocksize >> 9);
245 bio_set_dev(bio, sb->s_bdev);
246 bio_add_page(bio, page, PAGE_SIZE, 0);
247
248 bio->bi_end_io = end_bio_io_page;
249 bio->bi_private = page;
250 bio_set_op_attrs(bio, REQ_OP_READ, REQ_META);
251 submit_bio(bio);
252 wait_on_page_locked(page);
253 bio_put(bio);
254 if (!PageUptodate(page)) {
255 __free_page(page);
256 return -EIO;
257 }
258 p = kmap(page);
259 gfs2_sb_in(sdp, p);
260 kunmap(page);
261 __free_page(page);
262 return gfs2_check_sb(sdp, silent);
263}
264
265
266
267
268
269
270
271
272static int gfs2_read_sb(struct gfs2_sbd *sdp, int silent)
273{
274 u32 hash_blocks, ind_blocks, leaf_blocks;
275 u32 tmp_blocks;
276 unsigned int x;
277 int error;
278
279 error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift, silent);
280 if (error) {
281 if (!silent)
282 fs_err(sdp, "can't read superblock\n");
283 return error;
284 }
285
286 sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift -
287 GFS2_BASIC_BLOCK_SHIFT;
288 sdp->sd_fsb2bb = BIT(sdp->sd_fsb2bb_shift);
289 sdp->sd_diptrs = (sdp->sd_sb.sb_bsize -
290 sizeof(struct gfs2_dinode)) / sizeof(u64);
291 sdp->sd_inptrs = (sdp->sd_sb.sb_bsize -
292 sizeof(struct gfs2_meta_header)) / sizeof(u64);
293 sdp->sd_jbsize = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_meta_header);
294 sdp->sd_hash_bsize = sdp->sd_sb.sb_bsize / 2;
295 sdp->sd_hash_bsize_shift = sdp->sd_sb.sb_bsize_shift - 1;
296 sdp->sd_hash_ptrs = sdp->sd_hash_bsize / sizeof(u64);
297 sdp->sd_qc_per_block = (sdp->sd_sb.sb_bsize -
298 sizeof(struct gfs2_meta_header)) /
299 sizeof(struct gfs2_quota_change);
300 sdp->sd_blocks_per_bitmap = (sdp->sd_sb.sb_bsize -
301 sizeof(struct gfs2_meta_header))
302 * GFS2_NBBY;
303
304
305
306 hash_blocks = DIV_ROUND_UP(sizeof(u64) * BIT(GFS2_DIR_MAX_DEPTH),
307 sdp->sd_jbsize);
308
309 ind_blocks = 0;
310 for (tmp_blocks = hash_blocks; tmp_blocks > sdp->sd_diptrs;) {
311 tmp_blocks = DIV_ROUND_UP(tmp_blocks, sdp->sd_inptrs);
312 ind_blocks += tmp_blocks;
313 }
314
315 leaf_blocks = 2 + GFS2_DIR_MAX_DEPTH;
316
317 sdp->sd_max_dirres = hash_blocks + ind_blocks + leaf_blocks;
318
319 sdp->sd_heightsize[0] = sdp->sd_sb.sb_bsize -
320 sizeof(struct gfs2_dinode);
321 sdp->sd_heightsize[1] = sdp->sd_sb.sb_bsize * sdp->sd_diptrs;
322 for (x = 2;; x++) {
323 u64 space, d;
324 u32 m;
325
326 space = sdp->sd_heightsize[x - 1] * sdp->sd_inptrs;
327 d = space;
328 m = do_div(d, sdp->sd_inptrs);
329
330 if (d != sdp->sd_heightsize[x - 1] || m)
331 break;
332 sdp->sd_heightsize[x] = space;
333 }
334 sdp->sd_max_height = x;
335 sdp->sd_heightsize[x] = ~0;
336 gfs2_assert(sdp, sdp->sd_max_height <= GFS2_MAX_META_HEIGHT);
337
338 sdp->sd_jheightsize[0] = sdp->sd_sb.sb_bsize -
339 sizeof(struct gfs2_dinode);
340 sdp->sd_jheightsize[1] = sdp->sd_jbsize * sdp->sd_diptrs;
341 for (x = 2;; x++) {
342 u64 space, d;
343 u32 m;
344
345 space = sdp->sd_jheightsize[x - 1] * sdp->sd_inptrs;
346 d = space;
347 m = do_div(d, sdp->sd_inptrs);
348
349 if (d != sdp->sd_jheightsize[x - 1] || m)
350 break;
351 sdp->sd_jheightsize[x] = space;
352 }
353 sdp->sd_max_jheight = x;
354 sdp->sd_jheightsize[x] = ~0;
355 gfs2_assert(sdp, sdp->sd_max_jheight <= GFS2_MAX_META_HEIGHT);
356
357 sdp->sd_max_dents_per_leaf = (sdp->sd_sb.sb_bsize -
358 sizeof(struct gfs2_leaf)) /
359 GFS2_MIN_DIRENT_SIZE;
360 return 0;
361}
362
363static int init_names(struct gfs2_sbd *sdp, int silent)
364{
365 char *proto, *table;
366 int error = 0;
367
368 proto = sdp->sd_args.ar_lockproto;
369 table = sdp->sd_args.ar_locktable;
370
371
372
373 if (!proto[0] || !table[0]) {
374 error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift, silent);
375 if (error)
376 return error;
377
378 if (!proto[0])
379 proto = sdp->sd_sb.sb_lockproto;
380 if (!table[0])
381 table = sdp->sd_sb.sb_locktable;
382 }
383
384 if (!table[0])
385 table = sdp->sd_vfs->s_id;
386
387 strlcpy(sdp->sd_proto_name, proto, GFS2_FSNAME_LEN);
388 strlcpy(sdp->sd_table_name, table, GFS2_FSNAME_LEN);
389
390 table = sdp->sd_table_name;
391 while ((table = strchr(table, '/')))
392 *table = '_';
393
394 return error;
395}
396
397static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh,
398 int undo)
399{
400 int error = 0;
401
402 if (undo)
403 goto fail_trans;
404
405 error = gfs2_glock_nq_num(sdp,
406 GFS2_MOUNT_LOCK, &gfs2_nondisk_glops,
407 LM_ST_EXCLUSIVE, LM_FLAG_NOEXP | GL_NOCACHE,
408 mount_gh);
409 if (error) {
410 fs_err(sdp, "can't acquire mount glock: %d\n", error);
411 goto fail;
412 }
413
414 error = gfs2_glock_nq_num(sdp,
415 GFS2_LIVE_LOCK, &gfs2_nondisk_glops,
416 LM_ST_SHARED,
417 LM_FLAG_NOEXP | GL_EXACT,
418 &sdp->sd_live_gh);
419 if (error) {
420 fs_err(sdp, "can't acquire live glock: %d\n", error);
421 goto fail_mount;
422 }
423
424 error = gfs2_glock_get(sdp, GFS2_RENAME_LOCK, &gfs2_nondisk_glops,
425 CREATE, &sdp->sd_rename_gl);
426 if (error) {
427 fs_err(sdp, "can't create rename glock: %d\n", error);
428 goto fail_live;
429 }
430
431 error = gfs2_glock_get(sdp, GFS2_FREEZE_LOCK, &gfs2_freeze_glops,
432 CREATE, &sdp->sd_freeze_gl);
433 if (error) {
434 fs_err(sdp, "can't create transaction glock: %d\n", error);
435 goto fail_rename;
436 }
437
438 return 0;
439
440fail_trans:
441 gfs2_glock_put(sdp->sd_freeze_gl);
442fail_rename:
443 gfs2_glock_put(sdp->sd_rename_gl);
444fail_live:
445 gfs2_glock_dq_uninit(&sdp->sd_live_gh);
446fail_mount:
447 gfs2_glock_dq_uninit(mount_gh);
448fail:
449 return error;
450}
451
452static int gfs2_lookup_root(struct super_block *sb, struct dentry **dptr,
453 u64 no_addr, const char *name)
454{
455 struct gfs2_sbd *sdp = sb->s_fs_info;
456 struct dentry *dentry;
457 struct inode *inode;
458
459 inode = gfs2_inode_lookup(sb, DT_DIR, no_addr, 0,
460 GFS2_BLKST_FREE );
461 if (IS_ERR(inode)) {
462 fs_err(sdp, "can't read in %s inode: %ld\n", name, PTR_ERR(inode));
463 return PTR_ERR(inode);
464 }
465 dentry = d_make_root(inode);
466 if (!dentry) {
467 fs_err(sdp, "can't alloc %s dentry\n", name);
468 return -ENOMEM;
469 }
470 *dptr = dentry;
471 return 0;
472}
473
474static int init_sb(struct gfs2_sbd *sdp, int silent)
475{
476 struct super_block *sb = sdp->sd_vfs;
477 struct gfs2_holder sb_gh;
478 u64 no_addr;
479 int ret;
480
481 ret = gfs2_glock_nq_num(sdp, GFS2_SB_LOCK, &gfs2_meta_glops,
482 LM_ST_SHARED, 0, &sb_gh);
483 if (ret) {
484 fs_err(sdp, "can't acquire superblock glock: %d\n", ret);
485 return ret;
486 }
487
488 ret = gfs2_read_sb(sdp, silent);
489 if (ret) {
490 fs_err(sdp, "can't read superblock: %d\n", ret);
491 goto out;
492 }
493
494
495 if (sdp->sd_sb.sb_bsize < bdev_logical_block_size(sb->s_bdev)) {
496 ret = -EINVAL;
497 fs_err(sdp, "FS block size (%u) is too small for device "
498 "block size (%u)\n",
499 sdp->sd_sb.sb_bsize, bdev_logical_block_size(sb->s_bdev));
500 goto out;
501 }
502 if (sdp->sd_sb.sb_bsize > PAGE_SIZE) {
503 ret = -EINVAL;
504 fs_err(sdp, "FS block size (%u) is too big for machine "
505 "page size (%u)\n",
506 sdp->sd_sb.sb_bsize, (unsigned int)PAGE_SIZE);
507 goto out;
508 }
509 sb_set_blocksize(sb, sdp->sd_sb.sb_bsize);
510
511
512 no_addr = sdp->sd_sb.sb_root_dir.no_addr;
513 ret = gfs2_lookup_root(sb, &sdp->sd_root_dir, no_addr, "root");
514 if (ret)
515 goto out;
516
517
518 no_addr = sdp->sd_sb.sb_master_dir.no_addr;
519 ret = gfs2_lookup_root(sb, &sdp->sd_master_dir, no_addr, "master");
520 if (ret) {
521 dput(sdp->sd_root_dir);
522 goto out;
523 }
524 sb->s_root = dget(sdp->sd_args.ar_meta ? sdp->sd_master_dir : sdp->sd_root_dir);
525out:
526 gfs2_glock_dq_uninit(&sb_gh);
527 return ret;
528}
529
530static void gfs2_others_may_mount(struct gfs2_sbd *sdp)
531{
532 char *message = "FIRSTMOUNT=Done";
533 char *envp[] = { message, NULL };
534
535 fs_info(sdp, "first mount done, others may mount\n");
536
537 if (sdp->sd_lockstruct.ls_ops->lm_first_done)
538 sdp->sd_lockstruct.ls_ops->lm_first_done(sdp);
539
540 kobject_uevent_env(&sdp->sd_kobj, KOBJ_CHANGE, envp);
541}
542
543
544
545
546
547
548
549
550
551static int gfs2_jindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ji_gh)
552{
553 struct gfs2_inode *dip = GFS2_I(sdp->sd_jindex);
554 struct qstr name;
555 char buf[20];
556 struct gfs2_jdesc *jd;
557 int error;
558
559 name.name = buf;
560
561 mutex_lock(&sdp->sd_jindex_mutex);
562
563 for (;;) {
564 error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, ji_gh);
565 if (error)
566 break;
567
568 name.len = sprintf(buf, "journal%u", sdp->sd_journals);
569 name.hash = gfs2_disk_hash(name.name, name.len);
570
571 error = gfs2_dir_check(sdp->sd_jindex, &name, NULL);
572 if (error == -ENOENT) {
573 error = 0;
574 break;
575 }
576
577 gfs2_glock_dq_uninit(ji_gh);
578
579 if (error)
580 break;
581
582 error = -ENOMEM;
583 jd = kzalloc(sizeof(struct gfs2_jdesc), GFP_KERNEL);
584 if (!jd)
585 break;
586
587 INIT_LIST_HEAD(&jd->extent_list);
588 INIT_LIST_HEAD(&jd->jd_revoke_list);
589
590 INIT_WORK(&jd->jd_work, gfs2_recover_func);
591 jd->jd_inode = gfs2_lookupi(sdp->sd_jindex, &name, 1);
592 if (!jd->jd_inode || IS_ERR(jd->jd_inode)) {
593 if (!jd->jd_inode)
594 error = -ENOENT;
595 else
596 error = PTR_ERR(jd->jd_inode);
597 kfree(jd);
598 break;
599 }
600
601 spin_lock(&sdp->sd_jindex_spin);
602 jd->jd_jid = sdp->sd_journals++;
603 list_add_tail(&jd->jd_list, &sdp->sd_jindex_list);
604 spin_unlock(&sdp->sd_jindex_spin);
605 }
606
607 mutex_unlock(&sdp->sd_jindex_mutex);
608
609 return error;
610}
611
612
613
614
615
616
617
618
619static int check_journal_clean(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd)
620{
621 int error;
622 struct gfs2_holder j_gh;
623 struct gfs2_log_header_host head;
624 struct gfs2_inode *ip;
625
626 ip = GFS2_I(jd->jd_inode);
627 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_NOEXP |
628 GL_EXACT | GL_NOCACHE, &j_gh);
629 if (error) {
630 fs_err(sdp, "Error locking journal for spectator mount.\n");
631 return -EPERM;
632 }
633 error = gfs2_jdesc_check(jd);
634 if (error) {
635 fs_err(sdp, "Error checking journal for spectator mount.\n");
636 goto out_unlock;
637 }
638 error = gfs2_find_jhead(jd, &head);
639 if (error) {
640 fs_err(sdp, "Error parsing journal for spectator mount.\n");
641 goto out_unlock;
642 }
643 if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) {
644 error = -EPERM;
645 fs_err(sdp, "jid=%u: Journal is dirty, so the first mounter "
646 "must not be a spectator.\n", jd->jd_jid);
647 }
648
649out_unlock:
650 gfs2_glock_dq_uninit(&j_gh);
651 return error;
652}
653
654static int init_journal(struct gfs2_sbd *sdp, int undo)
655{
656 struct inode *master = d_inode(sdp->sd_master_dir);
657 struct gfs2_holder ji_gh;
658 struct gfs2_inode *ip;
659 int jindex = 1;
660 int error = 0;
661
662 if (undo) {
663 jindex = 0;
664 goto fail_jinode_gh;
665 }
666
667 sdp->sd_jindex = gfs2_lookup_simple(master, "jindex");
668 if (IS_ERR(sdp->sd_jindex)) {
669 fs_err(sdp, "can't lookup journal index: %d\n", error);
670 return PTR_ERR(sdp->sd_jindex);
671 }
672
673
674
675 error = gfs2_jindex_hold(sdp, &ji_gh);
676 if (error) {
677 fs_err(sdp, "can't read journal index: %d\n", error);
678 goto fail;
679 }
680
681 error = -EUSERS;
682 if (!gfs2_jindex_size(sdp)) {
683 fs_err(sdp, "no journals!\n");
684 goto fail_jindex;
685 }
686
687 atomic_set(&sdp->sd_log_blks_needed, 0);
688 if (sdp->sd_args.ar_spectator) {
689 sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0);
690 atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks);
691 atomic_set(&sdp->sd_log_thresh1, 2*sdp->sd_jdesc->jd_blocks/5);
692 atomic_set(&sdp->sd_log_thresh2, 4*sdp->sd_jdesc->jd_blocks/5);
693 } else {
694 if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) {
695 fs_err(sdp, "can't mount journal #%u\n",
696 sdp->sd_lockstruct.ls_jid);
697 fs_err(sdp, "there are only %u journals (0 - %u)\n",
698 gfs2_jindex_size(sdp),
699 gfs2_jindex_size(sdp) - 1);
700 goto fail_jindex;
701 }
702 sdp->sd_jdesc = gfs2_jdesc_find(sdp, sdp->sd_lockstruct.ls_jid);
703
704 error = gfs2_glock_nq_num(sdp, sdp->sd_lockstruct.ls_jid,
705 &gfs2_journal_glops,
706 LM_ST_EXCLUSIVE, LM_FLAG_NOEXP,
707 &sdp->sd_journal_gh);
708 if (error) {
709 fs_err(sdp, "can't acquire journal glock: %d\n", error);
710 goto fail_jindex;
711 }
712
713 ip = GFS2_I(sdp->sd_jdesc->jd_inode);
714 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED,
715 LM_FLAG_NOEXP | GL_EXACT | GL_NOCACHE,
716 &sdp->sd_jinode_gh);
717 if (error) {
718 fs_err(sdp, "can't acquire journal inode glock: %d\n",
719 error);
720 goto fail_journal_gh;
721 }
722
723 error = gfs2_jdesc_check(sdp->sd_jdesc);
724 if (error) {
725 fs_err(sdp, "my journal (%u) is bad: %d\n",
726 sdp->sd_jdesc->jd_jid, error);
727 goto fail_jinode_gh;
728 }
729 atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks);
730 atomic_set(&sdp->sd_log_thresh1, 2*sdp->sd_jdesc->jd_blocks/5);
731 atomic_set(&sdp->sd_log_thresh2, 4*sdp->sd_jdesc->jd_blocks/5);
732
733
734 gfs2_map_journal_extents(sdp, sdp->sd_jdesc);
735 }
736 trace_gfs2_log_blocks(sdp, atomic_read(&sdp->sd_log_blks_free));
737
738 if (sdp->sd_lockstruct.ls_first) {
739 unsigned int x;
740 for (x = 0; x < sdp->sd_journals; x++) {
741 struct gfs2_jdesc *jd = gfs2_jdesc_find(sdp, x);
742
743 if (sdp->sd_args.ar_spectator) {
744 error = check_journal_clean(sdp, jd);
745 if (error)
746 goto fail_jinode_gh;
747 continue;
748 }
749 error = gfs2_recover_journal(jd, true);
750 if (error) {
751 fs_err(sdp, "error recovering journal %u: %d\n",
752 x, error);
753 goto fail_jinode_gh;
754 }
755 }
756
757 gfs2_others_may_mount(sdp);
758 } else if (!sdp->sd_args.ar_spectator) {
759 error = gfs2_recover_journal(sdp->sd_jdesc, true);
760 if (error) {
761 fs_err(sdp, "error recovering my journal: %d\n", error);
762 goto fail_jinode_gh;
763 }
764 }
765
766 sdp->sd_log_idle = 1;
767 set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags);
768 gfs2_glock_dq_uninit(&ji_gh);
769 jindex = 0;
770 INIT_WORK(&sdp->sd_freeze_work, gfs2_freeze_func);
771 return 0;
772
773fail_jinode_gh:
774 if (!sdp->sd_args.ar_spectator)
775 gfs2_glock_dq_uninit(&sdp->sd_jinode_gh);
776fail_journal_gh:
777 if (!sdp->sd_args.ar_spectator)
778 gfs2_glock_dq_uninit(&sdp->sd_journal_gh);
779fail_jindex:
780 gfs2_jindex_free(sdp);
781 if (jindex)
782 gfs2_glock_dq_uninit(&ji_gh);
783fail:
784 iput(sdp->sd_jindex);
785 return error;
786}
787
788static struct lock_class_key gfs2_quota_imutex_key;
789
790static int init_inodes(struct gfs2_sbd *sdp, int undo)
791{
792 int error = 0;
793 struct inode *master = d_inode(sdp->sd_master_dir);
794
795 if (undo)
796 goto fail_qinode;
797
798 error = init_journal(sdp, undo);
799 complete_all(&sdp->sd_journal_ready);
800 if (error)
801 goto fail;
802
803
804 sdp->sd_statfs_inode = gfs2_lookup_simple(master, "statfs");
805 if (IS_ERR(sdp->sd_statfs_inode)) {
806 error = PTR_ERR(sdp->sd_statfs_inode);
807 fs_err(sdp, "can't read in statfs inode: %d\n", error);
808 goto fail_journal;
809 }
810
811
812 sdp->sd_rindex = gfs2_lookup_simple(master, "rindex");
813 if (IS_ERR(sdp->sd_rindex)) {
814 error = PTR_ERR(sdp->sd_rindex);
815 fs_err(sdp, "can't get resource index inode: %d\n", error);
816 goto fail_statfs;
817 }
818 sdp->sd_rindex_uptodate = 0;
819
820
821 sdp->sd_quota_inode = gfs2_lookup_simple(master, "quota");
822 if (IS_ERR(sdp->sd_quota_inode)) {
823 error = PTR_ERR(sdp->sd_quota_inode);
824 fs_err(sdp, "can't get quota file inode: %d\n", error);
825 goto fail_rindex;
826 }
827
828
829
830
831 lockdep_set_class(&sdp->sd_quota_inode->i_rwsem,
832 &gfs2_quota_imutex_key);
833
834 error = gfs2_rindex_update(sdp);
835 if (error)
836 goto fail_qinode;
837
838 return 0;
839
840fail_qinode:
841 iput(sdp->sd_quota_inode);
842fail_rindex:
843 gfs2_clear_rgrpd(sdp);
844 iput(sdp->sd_rindex);
845fail_statfs:
846 iput(sdp->sd_statfs_inode);
847fail_journal:
848 init_journal(sdp, UNDO);
849fail:
850 return error;
851}
852
853static int init_per_node(struct gfs2_sbd *sdp, int undo)
854{
855 struct inode *pn = NULL;
856 char buf[30];
857 int error = 0;
858 struct gfs2_inode *ip;
859 struct inode *master = d_inode(sdp->sd_master_dir);
860
861 if (sdp->sd_args.ar_spectator)
862 return 0;
863
864 if (undo)
865 goto fail_qc_gh;
866
867 pn = gfs2_lookup_simple(master, "per_node");
868 if (IS_ERR(pn)) {
869 error = PTR_ERR(pn);
870 fs_err(sdp, "can't find per_node directory: %d\n", error);
871 return error;
872 }
873
874 sprintf(buf, "statfs_change%u", sdp->sd_jdesc->jd_jid);
875 sdp->sd_sc_inode = gfs2_lookup_simple(pn, buf);
876 if (IS_ERR(sdp->sd_sc_inode)) {
877 error = PTR_ERR(sdp->sd_sc_inode);
878 fs_err(sdp, "can't find local \"sc\" file: %d\n", error);
879 goto fail;
880 }
881
882 sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid);
883 sdp->sd_qc_inode = gfs2_lookup_simple(pn, buf);
884 if (IS_ERR(sdp->sd_qc_inode)) {
885 error = PTR_ERR(sdp->sd_qc_inode);
886 fs_err(sdp, "can't find local \"qc\" file: %d\n", error);
887 goto fail_ut_i;
888 }
889
890 iput(pn);
891 pn = NULL;
892
893 ip = GFS2_I(sdp->sd_sc_inode);
894 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0,
895 &sdp->sd_sc_gh);
896 if (error) {
897 fs_err(sdp, "can't lock local \"sc\" file: %d\n", error);
898 goto fail_qc_i;
899 }
900
901 ip = GFS2_I(sdp->sd_qc_inode);
902 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0,
903 &sdp->sd_qc_gh);
904 if (error) {
905 fs_err(sdp, "can't lock local \"qc\" file: %d\n", error);
906 goto fail_ut_gh;
907 }
908
909 return 0;
910
911fail_qc_gh:
912 gfs2_glock_dq_uninit(&sdp->sd_qc_gh);
913fail_ut_gh:
914 gfs2_glock_dq_uninit(&sdp->sd_sc_gh);
915fail_qc_i:
916 iput(sdp->sd_qc_inode);
917fail_ut_i:
918 iput(sdp->sd_sc_inode);
919fail:
920 iput(pn);
921 return error;
922}
923
924static const match_table_t nolock_tokens = {
925 { Opt_jid, "jid=%d\n", },
926 { Opt_err, NULL },
927};
928
929static const struct lm_lockops nolock_ops = {
930 .lm_proto_name = "lock_nolock",
931 .lm_put_lock = gfs2_glock_free,
932 .lm_tokens = &nolock_tokens,
933};
934
935
936
937
938
939
940
941
942
943
944static int gfs2_lm_mount(struct gfs2_sbd *sdp, int silent)
945{
946 const struct lm_lockops *lm;
947 struct lm_lockstruct *ls = &sdp->sd_lockstruct;
948 struct gfs2_args *args = &sdp->sd_args;
949 const char *proto = sdp->sd_proto_name;
950 const char *table = sdp->sd_table_name;
951 char *o, *options;
952 int ret;
953
954 if (!strcmp("lock_nolock", proto)) {
955 lm = &nolock_ops;
956 sdp->sd_args.ar_localflocks = 1;
957#ifdef CONFIG_GFS2_FS_LOCKING_DLM
958 } else if (!strcmp("lock_dlm", proto)) {
959 lm = &gfs2_dlm_ops;
960#endif
961 } else {
962 pr_info("can't find protocol %s\n", proto);
963 return -ENOENT;
964 }
965
966 fs_info(sdp, "Trying to join cluster \"%s\", \"%s\"\n", proto, table);
967
968 ls->ls_ops = lm;
969 ls->ls_first = 1;
970
971 for (options = args->ar_hostdata; (o = strsep(&options, ":")); ) {
972 substring_t tmp[MAX_OPT_ARGS];
973 int token, option;
974
975 if (!o || !*o)
976 continue;
977
978 token = match_token(o, *lm->lm_tokens, tmp);
979 switch (token) {
980 case Opt_jid:
981 ret = match_int(&tmp[0], &option);
982 if (ret || option < 0)
983 goto hostdata_error;
984 if (test_and_clear_bit(SDF_NOJOURNALID, &sdp->sd_flags))
985 ls->ls_jid = option;
986 break;
987 case Opt_id:
988 case Opt_nodir:
989
990 break;
991 case Opt_first:
992 ret = match_int(&tmp[0], &option);
993 if (ret || (option != 0 && option != 1))
994 goto hostdata_error;
995 ls->ls_first = option;
996 break;
997 case Opt_err:
998 default:
999hostdata_error:
1000 fs_info(sdp, "unknown hostdata (%s)\n", o);
1001 return -EINVAL;
1002 }
1003 }
1004
1005 if (lm->lm_mount == NULL) {
1006 fs_info(sdp, "Now mounting FS...\n");
1007 complete_all(&sdp->sd_locking_init);
1008 return 0;
1009 }
1010 ret = lm->lm_mount(sdp, table);
1011 if (ret == 0)
1012 fs_info(sdp, "Joined cluster. Now mounting FS...\n");
1013 complete_all(&sdp->sd_locking_init);
1014 return ret;
1015}
1016
1017void gfs2_lm_unmount(struct gfs2_sbd *sdp)
1018{
1019 const struct lm_lockops *lm = sdp->sd_lockstruct.ls_ops;
1020 if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) &&
1021 lm->lm_unmount)
1022 lm->lm_unmount(sdp);
1023}
1024
1025static int wait_on_journal(struct gfs2_sbd *sdp)
1026{
1027 if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL)
1028 return 0;
1029
1030 return wait_on_bit(&sdp->sd_flags, SDF_NOJOURNALID, TASK_INTERRUPTIBLE)
1031 ? -EINTR : 0;
1032}
1033
1034void gfs2_online_uevent(struct gfs2_sbd *sdp)
1035{
1036 struct super_block *sb = sdp->sd_vfs;
1037 char ro[20];
1038 char spectator[20];
1039 char *envp[] = { ro, spectator, NULL };
1040 sprintf(ro, "RDONLY=%d", sb_rdonly(sb));
1041 sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0);
1042 kobject_uevent_env(&sdp->sd_kobj, KOBJ_ONLINE, envp);
1043}
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054static int fill_super(struct super_block *sb, struct gfs2_args *args, int silent)
1055{
1056 struct gfs2_sbd *sdp;
1057 struct gfs2_holder mount_gh;
1058 int error;
1059
1060 sdp = init_sbd(sb);
1061 if (!sdp) {
1062 pr_warn("can't alloc struct gfs2_sbd\n");
1063 return -ENOMEM;
1064 }
1065 sdp->sd_args = *args;
1066
1067 if (sdp->sd_args.ar_spectator) {
1068 sb->s_flags |= SB_RDONLY;
1069 set_bit(SDF_RORECOVERY, &sdp->sd_flags);
1070 }
1071 if (sdp->sd_args.ar_posix_acl)
1072 sb->s_flags |= SB_POSIXACL;
1073 if (sdp->sd_args.ar_nobarrier)
1074 set_bit(SDF_NOBARRIERS, &sdp->sd_flags);
1075
1076 sb->s_flags |= SB_NOSEC;
1077 sb->s_magic = GFS2_MAGIC;
1078 sb->s_op = &gfs2_super_ops;
1079 sb->s_d_op = &gfs2_dops;
1080 sb->s_export_op = &gfs2_export_ops;
1081 sb->s_xattr = gfs2_xattr_handlers;
1082 sb->s_qcop = &gfs2_quotactl_ops;
1083 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
1084 sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
1085 sb->s_time_gran = 1;
1086 sb->s_maxbytes = MAX_LFS_FILESIZE;
1087
1088
1089
1090 sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK);
1091 sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits;
1092 sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift -
1093 GFS2_BASIC_BLOCK_SHIFT;
1094 sdp->sd_fsb2bb = BIT(sdp->sd_fsb2bb_shift);
1095
1096 sdp->sd_tune.gt_logd_secs = sdp->sd_args.ar_commit;
1097 sdp->sd_tune.gt_quota_quantum = sdp->sd_args.ar_quota_quantum;
1098 if (sdp->sd_args.ar_statfs_quantum) {
1099 sdp->sd_tune.gt_statfs_slow = 0;
1100 sdp->sd_tune.gt_statfs_quantum = sdp->sd_args.ar_statfs_quantum;
1101 } else {
1102 sdp->sd_tune.gt_statfs_slow = 1;
1103 sdp->sd_tune.gt_statfs_quantum = 30;
1104 }
1105
1106 error = init_names(sdp, silent);
1107 if (error) {
1108
1109
1110 free_percpu(sdp->sd_lkstats);
1111 kfree(sdp);
1112 sb->s_fs_info = NULL;
1113 return error;
1114 }
1115
1116 snprintf(sdp->sd_fsname, sizeof(sdp->sd_fsname), "%s", sdp->sd_table_name);
1117
1118 error = gfs2_sys_fs_add(sdp);
1119
1120
1121
1122
1123
1124
1125
1126 if (error)
1127 return error;
1128
1129 gfs2_create_debugfs_file(sdp);
1130
1131 error = gfs2_lm_mount(sdp, silent);
1132 if (error)
1133 goto fail_debug;
1134
1135 error = init_locking(sdp, &mount_gh, DO);
1136 if (error)
1137 goto fail_lm;
1138
1139 error = init_sb(sdp, silent);
1140 if (error)
1141 goto fail_locking;
1142
1143 error = wait_on_journal(sdp);
1144 if (error)
1145 goto fail_sb;
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155 if (sdp->sd_lockstruct.ls_jid < 0) {
1156 error = sdp->sd_lockstruct.ls_jid;
1157 sdp->sd_lockstruct.ls_jid = 0;
1158 goto fail_sb;
1159 }
1160
1161 if (sdp->sd_args.ar_spectator)
1162 snprintf(sdp->sd_fsname, sizeof(sdp->sd_fsname), "%s.s",
1163 sdp->sd_table_name);
1164 else
1165 snprintf(sdp->sd_fsname, sizeof(sdp->sd_fsname), "%s.%u",
1166 sdp->sd_table_name, sdp->sd_lockstruct.ls_jid);
1167
1168 error = init_inodes(sdp, DO);
1169 if (error)
1170 goto fail_sb;
1171
1172 error = init_per_node(sdp, DO);
1173 if (error)
1174 goto fail_inodes;
1175
1176 error = gfs2_statfs_init(sdp);
1177 if (error) {
1178 fs_err(sdp, "can't initialize statfs subsystem: %d\n", error);
1179 goto fail_per_node;
1180 }
1181
1182 if (!sb_rdonly(sb)) {
1183 error = gfs2_make_fs_rw(sdp);
1184 if (error) {
1185 fs_err(sdp, "can't make FS RW: %d\n", error);
1186 goto fail_per_node;
1187 }
1188 }
1189
1190 gfs2_glock_dq_uninit(&mount_gh);
1191 gfs2_online_uevent(sdp);
1192 return 0;
1193
1194fail_per_node:
1195 init_per_node(sdp, UNDO);
1196fail_inodes:
1197 init_inodes(sdp, UNDO);
1198fail_sb:
1199 if (sdp->sd_root_dir)
1200 dput(sdp->sd_root_dir);
1201 if (sdp->sd_master_dir)
1202 dput(sdp->sd_master_dir);
1203 if (sb->s_root)
1204 dput(sb->s_root);
1205 sb->s_root = NULL;
1206fail_locking:
1207 init_locking(sdp, &mount_gh, UNDO);
1208fail_lm:
1209 complete_all(&sdp->sd_journal_ready);
1210 gfs2_gl_hash_clear(sdp);
1211 gfs2_lm_unmount(sdp);
1212fail_debug:
1213 gfs2_delete_debugfs_file(sdp);
1214 free_percpu(sdp->sd_lkstats);
1215
1216
1217 gfs2_sys_fs_del(sdp);
1218 sb->s_fs_info = NULL;
1219 return error;
1220}
1221
1222static int set_gfs2_super(struct super_block *s, void *data)
1223{
1224 s->s_bdev = data;
1225 s->s_dev = s->s_bdev->bd_dev;
1226 s->s_bdi = bdi_get(s->s_bdev->bd_bdi);
1227 return 0;
1228}
1229
1230static int test_gfs2_super(struct super_block *s, void *ptr)
1231{
1232 struct block_device *bdev = ptr;
1233 return (bdev == s->s_bdev);
1234}
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250static struct dentry *gfs2_mount(struct file_system_type *fs_type, int flags,
1251 const char *dev_name, void *data)
1252{
1253 struct block_device *bdev;
1254 struct super_block *s;
1255 fmode_t mode = FMODE_READ | FMODE_EXCL;
1256 int error;
1257 struct gfs2_args args;
1258 struct gfs2_sbd *sdp;
1259
1260 if (!(flags & SB_RDONLY))
1261 mode |= FMODE_WRITE;
1262
1263 bdev = blkdev_get_by_path(dev_name, mode, fs_type);
1264 if (IS_ERR(bdev))
1265 return ERR_CAST(bdev);
1266
1267
1268
1269
1270
1271
1272 mutex_lock(&bdev->bd_fsfreeze_mutex);
1273 if (bdev->bd_fsfreeze_count > 0) {
1274 mutex_unlock(&bdev->bd_fsfreeze_mutex);
1275 error = -EBUSY;
1276 goto error_bdev;
1277 }
1278 s = sget(fs_type, test_gfs2_super, set_gfs2_super, flags, bdev);
1279 mutex_unlock(&bdev->bd_fsfreeze_mutex);
1280 error = PTR_ERR(s);
1281 if (IS_ERR(s))
1282 goto error_bdev;
1283
1284 if (s->s_root) {
1285
1286
1287
1288
1289
1290
1291
1292 up_write(&s->s_umount);
1293 blkdev_put(bdev, mode);
1294 down_write(&s->s_umount);
1295 } else {
1296
1297 s->s_mode = mode;
1298 }
1299
1300 memset(&args, 0, sizeof(args));
1301 args.ar_quota = GFS2_QUOTA_DEFAULT;
1302 args.ar_data = GFS2_DATA_DEFAULT;
1303 args.ar_commit = 30;
1304 args.ar_statfs_quantum = 30;
1305 args.ar_quota_quantum = 60;
1306 args.ar_errors = GFS2_ERRORS_DEFAULT;
1307
1308 error = gfs2_mount_args(&args, data);
1309 if (error) {
1310 pr_warn("can't parse mount arguments\n");
1311 goto error_super;
1312 }
1313
1314 if (s->s_root) {
1315 error = -EBUSY;
1316 if ((flags ^ s->s_flags) & SB_RDONLY)
1317 goto error_super;
1318 } else {
1319 snprintf(s->s_id, sizeof(s->s_id), "%pg", bdev);
1320 sb_set_blocksize(s, block_size(bdev));
1321 error = fill_super(s, &args, flags & SB_SILENT ? 1 : 0);
1322 if (error)
1323 goto error_super;
1324 s->s_flags |= SB_ACTIVE;
1325 bdev->bd_super = s;
1326 }
1327
1328 sdp = s->s_fs_info;
1329 if (args.ar_meta)
1330 return dget(sdp->sd_master_dir);
1331 else
1332 return dget(sdp->sd_root_dir);
1333
1334error_super:
1335 deactivate_locked_super(s);
1336 return ERR_PTR(error);
1337error_bdev:
1338 blkdev_put(bdev, mode);
1339 return ERR_PTR(error);
1340}
1341
1342static int set_meta_super(struct super_block *s, void *ptr)
1343{
1344 return -EINVAL;
1345}
1346
1347static struct dentry *gfs2_mount_meta(struct file_system_type *fs_type,
1348 int flags, const char *dev_name, void *data)
1349{
1350 struct super_block *s;
1351 struct gfs2_sbd *sdp;
1352 struct path path;
1353 int error;
1354
1355 error = kern_path(dev_name, LOOKUP_FOLLOW, &path);
1356 if (error) {
1357 pr_warn("path_lookup on %s returned error %d\n",
1358 dev_name, error);
1359 return ERR_PTR(error);
1360 }
1361 s = sget(&gfs2_fs_type, test_gfs2_super, set_meta_super, flags,
1362 path.dentry->d_sb->s_bdev);
1363 path_put(&path);
1364 if (IS_ERR(s)) {
1365 pr_warn("gfs2 mount does not exist\n");
1366 return ERR_CAST(s);
1367 }
1368 if ((flags ^ s->s_flags) & SB_RDONLY) {
1369 deactivate_locked_super(s);
1370 return ERR_PTR(-EBUSY);
1371 }
1372 sdp = s->s_fs_info;
1373 return dget(sdp->sd_master_dir);
1374}
1375
1376static void gfs2_kill_sb(struct super_block *sb)
1377{
1378 struct gfs2_sbd *sdp = sb->s_fs_info;
1379
1380 if (sdp == NULL) {
1381 kill_block_super(sb);
1382 return;
1383 }
1384
1385 gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_SYNC | GFS2_LFC_KILL_SB);
1386 dput(sdp->sd_root_dir);
1387 dput(sdp->sd_master_dir);
1388 sdp->sd_root_dir = NULL;
1389 sdp->sd_master_dir = NULL;
1390 shrink_dcache_sb(sb);
1391 free_percpu(sdp->sd_lkstats);
1392 kill_block_super(sb);
1393}
1394
1395struct file_system_type gfs2_fs_type = {
1396 .name = "gfs2",
1397 .fs_flags = FS_REQUIRES_DEV,
1398 .mount = gfs2_mount,
1399 .kill_sb = gfs2_kill_sb,
1400 .owner = THIS_MODULE,
1401};
1402MODULE_ALIAS_FS("gfs2");
1403
1404struct file_system_type gfs2meta_fs_type = {
1405 .name = "gfs2meta",
1406 .fs_flags = FS_REQUIRES_DEV,
1407 .mount = gfs2_mount_meta,
1408 .owner = THIS_MODULE,
1409};
1410MODULE_ALIAS_FS("gfs2meta");
1411