2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
7 * of the GNU General Public License version 2.
10 #include <linux/sched.h>
11 #include <linux/slab.h>
12 #include <linux/spinlock.h>
13 #include <linux/completion.h>
14 #include <linux/buffer_head.h>
15 #include <linux/blkdev.h>
16 #include <linux/kthread.h>
17 #include <linux/namei.h>
18 #include <linux/mount.h>
19 #include <linux/gfs2_ondisk.h>
20 #include <linux/lm_interface.h>
30 #include "ops_fstype.h"
31 #include "ops_dentry.h"
32 #include "ops_super.h"
43 static struct gfs2_sbd *init_sbd(struct super_block *sb)
47 sdp = kzalloc(sizeof(struct gfs2_sbd), GFP_KERNEL);
54 gfs2_tune_init(&sdp->sd_tune);
56 INIT_LIST_HEAD(&sdp->sd_reclaim_list);
57 spin_lock_init(&sdp->sd_reclaim_lock);
58 init_waitqueue_head(&sdp->sd_reclaim_wq);
60 mutex_init(&sdp->sd_inum_mutex);
61 spin_lock_init(&sdp->sd_statfs_spin);
62 mutex_init(&sdp->sd_statfs_mutex);
64 spin_lock_init(&sdp->sd_rindex_spin);
65 mutex_init(&sdp->sd_rindex_mutex);
66 INIT_LIST_HEAD(&sdp->sd_rindex_list);
67 INIT_LIST_HEAD(&sdp->sd_rindex_mru_list);
68 INIT_LIST_HEAD(&sdp->sd_rindex_recent_list);
70 INIT_LIST_HEAD(&sdp->sd_jindex_list);
71 spin_lock_init(&sdp->sd_jindex_spin);
72 mutex_init(&sdp->sd_jindex_mutex);
74 INIT_LIST_HEAD(&sdp->sd_quota_list);
75 spin_lock_init(&sdp->sd_quota_spin);
76 mutex_init(&sdp->sd_quota_mutex);
78 spin_lock_init(&sdp->sd_log_lock);
80 INIT_LIST_HEAD(&sdp->sd_log_le_buf);
81 INIT_LIST_HEAD(&sdp->sd_log_le_revoke);
82 INIT_LIST_HEAD(&sdp->sd_log_le_rg);
83 INIT_LIST_HEAD(&sdp->sd_log_le_databuf);
84 INIT_LIST_HEAD(&sdp->sd_log_le_ordered);
86 mutex_init(&sdp->sd_log_reserve_mutex);
87 INIT_LIST_HEAD(&sdp->sd_ail1_list);
88 INIT_LIST_HEAD(&sdp->sd_ail2_list);
90 init_rwsem(&sdp->sd_log_flush_lock);
91 atomic_set(&sdp->sd_log_in_flight, 0);
92 init_waitqueue_head(&sdp->sd_log_flush_wait);
94 INIT_LIST_HEAD(&sdp->sd_revoke_list);
96 mutex_init(&sdp->sd_freeze_lock);
101 static void init_vfs(struct super_block *sb, unsigned noatime)
103 struct gfs2_sbd *sdp = sb->s_fs_info;
105 sb->s_magic = GFS2_MAGIC;
106 sb->s_op = &gfs2_super_ops;
107 sb->s_export_op = &gfs2_export_ops;
109 sb->s_maxbytes = MAX_LFS_FILESIZE;
111 if (sb->s_flags & (MS_NOATIME | MS_NODIRATIME))
112 set_bit(noatime, &sdp->sd_flags);
114 /* Don't let the VFS update atimes. GFS2 handles this itself. */
115 sb->s_flags |= MS_NOATIME | MS_NODIRATIME;
118 static int init_names(struct gfs2_sbd *sdp, int silent)
123 proto = sdp->sd_args.ar_lockproto;
124 table = sdp->sd_args.ar_locktable;
126 /* Try to autodetect */
128 if (!proto[0] || !table[0]) {
129 error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift);
133 error = gfs2_check_sb(sdp, &sdp->sd_sb, silent);
138 proto = sdp->sd_sb.sb_lockproto;
140 table = sdp->sd_sb.sb_locktable;
144 table = sdp->sd_vfs->s_id;
146 snprintf(sdp->sd_proto_name, GFS2_FSNAME_LEN, "%s", proto);
147 snprintf(sdp->sd_table_name, GFS2_FSNAME_LEN, "%s", table);
149 table = sdp->sd_table_name;
150 while ((table = strchr(table, '/')))
157 static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh,
160 struct task_struct *p;
166 for (sdp->sd_glockd_num = 0;
167 sdp->sd_glockd_num < sdp->sd_args.ar_num_glockd;
168 sdp->sd_glockd_num++) {
169 p = kthread_run(gfs2_glockd, sdp, "gfs2_glockd");
172 fs_err(sdp, "can't start glockd thread: %d\n", error);
175 sdp->sd_glockd_process[sdp->sd_glockd_num] = p;
178 error = gfs2_glock_nq_num(sdp,
179 GFS2_MOUNT_LOCK, &gfs2_nondisk_glops,
180 LM_ST_EXCLUSIVE, LM_FLAG_NOEXP | GL_NOCACHE,
183 fs_err(sdp, "can't acquire mount glock: %d\n", error);
187 error = gfs2_glock_nq_num(sdp,
188 GFS2_LIVE_LOCK, &gfs2_nondisk_glops,
190 LM_FLAG_NOEXP | GL_EXACT,
193 fs_err(sdp, "can't acquire live glock: %d\n", error);
197 error = gfs2_glock_get(sdp, GFS2_RENAME_LOCK, &gfs2_nondisk_glops,
198 CREATE, &sdp->sd_rename_gl);
200 fs_err(sdp, "can't create rename glock: %d\n", error);
204 error = gfs2_glock_get(sdp, GFS2_TRANS_LOCK, &gfs2_trans_glops,
205 CREATE, &sdp->sd_trans_gl);
207 fs_err(sdp, "can't create transaction glock: %d\n", error);
210 set_bit(GLF_STICKY, &sdp->sd_trans_gl->gl_flags);
215 gfs2_glock_put(sdp->sd_trans_gl);
217 gfs2_glock_put(sdp->sd_rename_gl);
219 gfs2_glock_dq_uninit(&sdp->sd_live_gh);
221 gfs2_glock_dq_uninit(mount_gh);
223 while (sdp->sd_glockd_num--)
224 kthread_stop(sdp->sd_glockd_process[sdp->sd_glockd_num]);
229 static inline struct inode *gfs2_lookup_root(struct super_block *sb,
232 return gfs2_inode_lookup(sb, DT_DIR, no_addr, 0, 0);
235 static int init_sb(struct gfs2_sbd *sdp, int silent, int undo)
237 struct super_block *sb = sdp->sd_vfs;
238 struct gfs2_holder sb_gh;
251 error = gfs2_glock_nq_num(sdp, GFS2_SB_LOCK, &gfs2_meta_glops,
252 LM_ST_SHARED, 0, &sb_gh);
254 fs_err(sdp, "can't acquire superblock glock: %d\n", error);
258 error = gfs2_read_sb(sdp, sb_gh.gh_gl, silent);
260 fs_err(sdp, "can't read superblock: %d\n", error);
264 /* Set up the buffer cache and SB for real */
265 if (sdp->sd_sb.sb_bsize < bdev_hardsect_size(sb->s_bdev)) {
267 fs_err(sdp, "FS block size (%u) is too small for device "
269 sdp->sd_sb.sb_bsize, bdev_hardsect_size(sb->s_bdev));
272 if (sdp->sd_sb.sb_bsize > PAGE_SIZE) {
274 fs_err(sdp, "FS block size (%u) is too big for machine "
276 sdp->sd_sb.sb_bsize, (unsigned int)PAGE_SIZE);
279 sb_set_blocksize(sb, sdp->sd_sb.sb_bsize);
281 /* Get the root inode */
282 no_addr = sdp->sd_sb.sb_root_dir.no_addr;
283 if (sb->s_type == &gfs2meta_fs_type)
284 no_addr = sdp->sd_sb.sb_master_dir.no_addr;
285 inode = gfs2_lookup_root(sb, no_addr);
287 error = PTR_ERR(inode);
288 fs_err(sdp, "can't read in root inode: %d\n", error);
292 sb->s_root = d_alloc_root(inode);
294 fs_err(sdp, "can't get root dentry\n");
298 sb->s_root->d_op = &gfs2_dops;
301 gfs2_glock_dq_uninit(&sb_gh);
305 static int init_journal(struct gfs2_sbd *sdp, int undo)
307 struct gfs2_holder ji_gh;
308 struct task_struct *p;
309 struct gfs2_inode *ip;
318 sdp->sd_jindex = gfs2_lookup_simple(sdp->sd_master_dir, "jindex");
319 if (IS_ERR(sdp->sd_jindex)) {
320 fs_err(sdp, "can't lookup journal index: %d\n", error);
321 return PTR_ERR(sdp->sd_jindex);
323 ip = GFS2_I(sdp->sd_jindex);
324 set_bit(GLF_STICKY, &ip->i_gl->gl_flags);
326 /* Load in the journal index special file */
328 error = gfs2_jindex_hold(sdp, &ji_gh);
330 fs_err(sdp, "can't read journal index: %d\n", error);
335 if (!gfs2_jindex_size(sdp)) {
336 fs_err(sdp, "no journals!\n");
340 if (sdp->sd_args.ar_spectator) {
341 sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0);
342 atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks);
344 if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) {
345 fs_err(sdp, "can't mount journal #%u\n",
346 sdp->sd_lockstruct.ls_jid);
347 fs_err(sdp, "there are only %u journals (0 - %u)\n",
348 gfs2_jindex_size(sdp),
349 gfs2_jindex_size(sdp) - 1);
352 sdp->sd_jdesc = gfs2_jdesc_find(sdp, sdp->sd_lockstruct.ls_jid);
354 error = gfs2_glock_nq_num(sdp, sdp->sd_lockstruct.ls_jid,
356 LM_ST_EXCLUSIVE, LM_FLAG_NOEXP,
357 &sdp->sd_journal_gh);
359 fs_err(sdp, "can't acquire journal glock: %d\n", error);
363 ip = GFS2_I(sdp->sd_jdesc->jd_inode);
364 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED,
365 LM_FLAG_NOEXP | GL_EXACT | GL_NOCACHE,
368 fs_err(sdp, "can't acquire journal inode glock: %d\n",
370 goto fail_journal_gh;
373 error = gfs2_jdesc_check(sdp->sd_jdesc);
375 fs_err(sdp, "my journal (%u) is bad: %d\n",
376 sdp->sd_jdesc->jd_jid, error);
379 atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks);
382 if (sdp->sd_lockstruct.ls_first) {
384 for (x = 0; x < sdp->sd_journals; x++) {
385 error = gfs2_recover_journal(gfs2_jdesc_find(sdp, x));
387 fs_err(sdp, "error recovering journal %u: %d\n",
393 gfs2_lm_others_may_mount(sdp);
394 } else if (!sdp->sd_args.ar_spectator) {
395 error = gfs2_recover_journal(sdp->sd_jdesc);
397 fs_err(sdp, "error recovering my journal: %d\n", error);
402 set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags);
403 gfs2_glock_dq_uninit(&ji_gh);
406 p = kthread_run(gfs2_recoverd, sdp, "gfs2_recoverd");
409 fs_err(sdp, "can't start recoverd thread: %d\n", error);
412 sdp->sd_recoverd_process = p;
417 kthread_stop(sdp->sd_recoverd_process);
419 if (!sdp->sd_args.ar_spectator)
420 gfs2_glock_dq_uninit(&sdp->sd_jinode_gh);
422 if (!sdp->sd_args.ar_spectator)
423 gfs2_glock_dq_uninit(&sdp->sd_journal_gh);
425 gfs2_jindex_free(sdp);
427 gfs2_glock_dq_uninit(&ji_gh);
429 iput(sdp->sd_jindex);
434 static int init_inodes(struct gfs2_sbd *sdp, int undo)
437 struct gfs2_inode *ip;
443 inode = gfs2_lookup_root(sdp->sd_vfs, sdp->sd_sb.sb_master_dir.no_addr);
445 error = PTR_ERR(inode);
446 fs_err(sdp, "can't read in master directory: %d\n", error);
449 sdp->sd_master_dir = inode;
451 error = init_journal(sdp, undo);
455 /* Read in the master inode number inode */
456 sdp->sd_inum_inode = gfs2_lookup_simple(sdp->sd_master_dir, "inum");
457 if (IS_ERR(sdp->sd_inum_inode)) {
458 error = PTR_ERR(sdp->sd_inum_inode);
459 fs_err(sdp, "can't read in inum inode: %d\n", error);
464 /* Read in the master statfs inode */
465 sdp->sd_statfs_inode = gfs2_lookup_simple(sdp->sd_master_dir, "statfs");
466 if (IS_ERR(sdp->sd_statfs_inode)) {
467 error = PTR_ERR(sdp->sd_statfs_inode);
468 fs_err(sdp, "can't read in statfs inode: %d\n", error);
472 /* Read in the resource index inode */
473 sdp->sd_rindex = gfs2_lookup_simple(sdp->sd_master_dir, "rindex");
474 if (IS_ERR(sdp->sd_rindex)) {
475 error = PTR_ERR(sdp->sd_rindex);
476 fs_err(sdp, "can't get resource index inode: %d\n", error);
479 ip = GFS2_I(sdp->sd_rindex);
480 set_bit(GLF_STICKY, &ip->i_gl->gl_flags);
481 sdp->sd_rindex_vn = ip->i_gl->gl_vn - 1;
483 /* Read in the quota inode */
484 sdp->sd_quota_inode = gfs2_lookup_simple(sdp->sd_master_dir, "quota");
485 if (IS_ERR(sdp->sd_quota_inode)) {
486 error = PTR_ERR(sdp->sd_quota_inode);
487 fs_err(sdp, "can't get quota file inode: %d\n", error);
493 iput(sdp->sd_quota_inode);
495 gfs2_clear_rgrpd(sdp);
496 iput(sdp->sd_rindex);
498 iput(sdp->sd_statfs_inode);
500 iput(sdp->sd_inum_inode);
502 init_journal(sdp, UNDO);
504 iput(sdp->sd_master_dir);
509 static int init_per_node(struct gfs2_sbd *sdp, int undo)
511 struct inode *pn = NULL;
514 struct gfs2_inode *ip;
516 if (sdp->sd_args.ar_spectator)
522 pn = gfs2_lookup_simple(sdp->sd_master_dir, "per_node");
525 fs_err(sdp, "can't find per_node directory: %d\n", error);
529 sprintf(buf, "inum_range%u", sdp->sd_jdesc->jd_jid);
530 sdp->sd_ir_inode = gfs2_lookup_simple(pn, buf);
531 if (IS_ERR(sdp->sd_ir_inode)) {
532 error = PTR_ERR(sdp->sd_ir_inode);
533 fs_err(sdp, "can't find local \"ir\" file: %d\n", error);
537 sprintf(buf, "statfs_change%u", sdp->sd_jdesc->jd_jid);
538 sdp->sd_sc_inode = gfs2_lookup_simple(pn, buf);
539 if (IS_ERR(sdp->sd_sc_inode)) {
540 error = PTR_ERR(sdp->sd_sc_inode);
541 fs_err(sdp, "can't find local \"sc\" file: %d\n", error);
545 sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid);
546 sdp->sd_qc_inode = gfs2_lookup_simple(pn, buf);
547 if (IS_ERR(sdp->sd_qc_inode)) {
548 error = PTR_ERR(sdp->sd_qc_inode);
549 fs_err(sdp, "can't find local \"qc\" file: %d\n", error);
556 ip = GFS2_I(sdp->sd_ir_inode);
557 error = gfs2_glock_nq_init(ip->i_gl,
561 fs_err(sdp, "can't lock local \"ir\" file: %d\n", error);
565 ip = GFS2_I(sdp->sd_sc_inode);
566 error = gfs2_glock_nq_init(ip->i_gl,
570 fs_err(sdp, "can't lock local \"sc\" file: %d\n", error);
574 ip = GFS2_I(sdp->sd_qc_inode);
575 error = gfs2_glock_nq_init(ip->i_gl,
579 fs_err(sdp, "can't lock local \"qc\" file: %d\n", error);
586 gfs2_glock_dq_uninit(&sdp->sd_qc_gh);
588 gfs2_glock_dq_uninit(&sdp->sd_sc_gh);
590 gfs2_glock_dq_uninit(&sdp->sd_ir_gh);
592 iput(sdp->sd_qc_inode);
594 iput(sdp->sd_sc_inode);
596 iput(sdp->sd_ir_inode);
603 static int init_threads(struct gfs2_sbd *sdp, int undo)
605 struct task_struct *p;
611 sdp->sd_log_flush_time = jiffies;
612 sdp->sd_jindex_refresh_time = jiffies;
614 p = kthread_run(gfs2_logd, sdp, "gfs2_logd");
617 fs_err(sdp, "can't start logd thread: %d\n", error);
620 sdp->sd_logd_process = p;
622 sdp->sd_statfs_sync_time = jiffies;
623 sdp->sd_quota_sync_time = jiffies;
625 p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad");
628 fs_err(sdp, "can't start quotad thread: %d\n", error);
631 sdp->sd_quotad_process = p;
637 kthread_stop(sdp->sd_quotad_process);
639 kthread_stop(sdp->sd_logd_process);
644 * fill_super - Read in superblock
645 * @sb: The VFS superblock
646 * @data: Mount options
647 * @silent: Don't complain if it's not a GFS2 filesystem
652 static int fill_super(struct super_block *sb, void *data, int silent)
654 struct gfs2_sbd *sdp;
655 struct gfs2_holder mount_gh;
660 printk(KERN_WARNING "GFS2: can't alloc struct gfs2_sbd\n");
664 error = gfs2_mount_args(sdp, (char *)data, 0);
666 printk(KERN_WARNING "GFS2: can't parse mount arguments\n");
670 init_vfs(sb, SDF_NOATIME);
672 /* Set up the buffer cache and fill in some fake block size values
673 to allow us to read-in the on-disk superblock. */
674 sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK);
675 sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits;
676 sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift -
677 GFS2_BASIC_BLOCK_SHIFT;
678 sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift;
680 error = init_names(sdp, silent);
684 gfs2_create_debugfs_file(sdp);
686 error = gfs2_sys_fs_add(sdp);
690 error = gfs2_lm_mount(sdp, silent);
694 error = init_locking(sdp, &mount_gh, DO);
698 error = init_sb(sdp, silent, DO);
702 error = init_inodes(sdp, DO);
706 error = init_per_node(sdp, DO);
710 error = gfs2_statfs_init(sdp);
712 fs_err(sdp, "can't initialize statfs subsystem: %d\n", error);
716 error = init_threads(sdp, DO);
720 if (!(sb->s_flags & MS_RDONLY)) {
721 error = gfs2_make_fs_rw(sdp);
723 fs_err(sdp, "can't make FS RW: %d\n", error);
728 gfs2_glock_dq_uninit(&mount_gh);
733 init_threads(sdp, UNDO);
735 init_per_node(sdp, UNDO);
737 init_inodes(sdp, UNDO);
739 init_sb(sdp, 0, UNDO);
741 init_locking(sdp, &mount_gh, UNDO);
743 gfs2_gl_hash_clear(sdp, WAIT);
744 gfs2_lm_unmount(sdp);
745 while (invalidate_inodes(sb))
748 gfs2_sys_fs_del(sdp);
750 gfs2_delete_debugfs_file(sdp);
752 sb->s_fs_info = NULL;
756 static int gfs2_get_sb(struct file_system_type *fs_type, int flags,
757 const char *dev_name, void *data, struct vfsmount *mnt)
759 struct super_block *sb;
760 struct gfs2_sbd *sdp;
761 int error = get_sb_bdev(fs_type, flags, dev_name, data, fill_super, mnt);
766 sdp->sd_gfs2mnt = mnt;
771 static int fill_super_meta(struct super_block *sb, struct super_block *new,
772 void *data, int silent)
774 struct gfs2_sbd *sdp = sb->s_fs_info;
778 new->s_fs_info = sdp;
779 sdp->sd_vfs_meta = sb;
781 init_vfs(new, SDF_NOATIME);
783 /* Get the master inode */
784 inode = igrab(sdp->sd_master_dir);
786 new->s_root = d_alloc_root(inode);
788 fs_err(sdp, "can't get root dentry\n");
792 new->s_root->d_op = &gfs2_dops;
797 static int set_bdev_super(struct super_block *s, void *data)
800 s->s_dev = s->s_bdev->bd_dev;
804 static int test_bdev_super(struct super_block *s, void *data)
806 return s->s_bdev == data;
809 static struct super_block* get_gfs2_sb(const char *dev_name)
813 struct file_system_type *fstype;
814 struct super_block *sb = NULL, *s;
817 error = path_lookup(dev_name, LOOKUP_FOLLOW, &nd);
819 printk(KERN_WARNING "GFS2: path_lookup on %s returned error\n",
823 error = vfs_getattr(nd.mnt, nd.dentry, &stat);
825 fstype = get_fs_type("gfs2");
826 list_for_each_entry(s, &fstype->fs_supers, s_instances) {
827 if ((S_ISBLK(stat.mode) && s->s_dev == stat.rdev) ||
828 (S_ISDIR(stat.mode) && s == nd.dentry->d_inode->i_sb)) {
834 printk(KERN_WARNING "GFS2: Unrecognized block device or "
835 "mount point %s\n", dev_name);
843 static int gfs2_get_sb_meta(struct file_system_type *fs_type, int flags,
844 const char *dev_name, void *data, struct vfsmount *mnt)
847 struct super_block *sb = NULL, *new;
848 struct gfs2_sbd *sdp;
850 sb = get_gfs2_sb(dev_name);
852 printk(KERN_WARNING "GFS2: gfs2 mount does not exist\n");
857 if (sdp->sd_vfs_meta) {
858 printk(KERN_WARNING "GFS2: gfs2meta mount already exists\n");
862 down(&sb->s_bdev->bd_mount_sem);
863 new = sget(fs_type, test_bdev_super, set_bdev_super, sb->s_bdev);
864 up(&sb->s_bdev->bd_mount_sem);
866 error = PTR_ERR(new);
869 module_put(fs_type->owner);
870 new->s_flags = flags;
871 strlcpy(new->s_id, sb->s_id, sizeof(new->s_id));
872 sb_set_blocksize(new, sb->s_blocksize);
873 error = fill_super_meta(sb, new, data, flags & MS_SILENT ? 1 : 0);
875 up_write(&new->s_umount);
876 deactivate_super(new);
880 new->s_flags |= MS_ACTIVE;
882 /* Grab a reference to the gfs2 mount point */
883 atomic_inc(&sdp->sd_gfs2mnt->mnt_count);
884 return simple_set_mnt(mnt, new);
889 static void gfs2_kill_sb(struct super_block *sb)
892 gfs2_delete_debugfs_file(sb->s_fs_info);
893 gfs2_meta_syncfs(sb->s_fs_info);
895 kill_block_super(sb);
898 static void gfs2_kill_sb_meta(struct super_block *sb)
900 struct gfs2_sbd *sdp = sb->s_fs_info;
901 generic_shutdown_super(sb);
902 sdp->sd_vfs_meta = NULL;
903 atomic_dec(&sdp->sd_gfs2mnt->mnt_count);
906 struct file_system_type gfs2_fs_type = {
908 .fs_flags = FS_REQUIRES_DEV,
909 .get_sb = gfs2_get_sb,
910 .kill_sb = gfs2_kill_sb,
911 .owner = THIS_MODULE,
914 struct file_system_type gfs2meta_fs_type = {
916 .fs_flags = FS_REQUIRES_DEV,
917 .get_sb = gfs2_get_sb_meta,
918 .kill_sb = gfs2_kill_sb_meta,
919 .owner = THIS_MODULE,