2 * Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of version 2 of the GNU General Public License as
6 * published by the Free Software Foundation.
8 * This program is distributed in the hope that it would be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12 * Further, this software is distributed without any warranty that it is
13 * free of the rightful claim of any third person regarding infringement
14 * or the like. Any license provided herein, whether implied or
15 * otherwise, applies only to this software file. Patent licenses, if
16 * any, provided herein do not apply to combinations of this program with
17 * other software, or any other product whatsoever.
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write the Free Software Foundation, Inc., 59
21 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
23 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
24 * Mountain View, CA 94043, or:
28 * For further information regarding this notice, see:
30 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
38 #include "xfs_trans.h"
42 #include "xfs_alloc.h"
43 #include "xfs_dmapi.h"
44 #include "xfs_quota.h"
45 #include "xfs_mount.h"
46 #include "xfs_alloc_btree.h"
47 #include "xfs_bmap_btree.h"
48 #include "xfs_ialloc_btree.h"
49 #include "xfs_btree.h"
50 #include "xfs_ialloc.h"
51 #include "xfs_attr_sf.h"
52 #include "xfs_dir_sf.h"
53 #include "xfs_dir2_sf.h"
54 #include "xfs_dinode.h"
55 #include "xfs_inode.h"
58 #include "xfs_rtalloc.h"
59 #include "xfs_error.h"
60 #include "xfs_itable.h"
66 #include "xfs_buf_item.h"
67 #include "xfs_utils.h"
68 #include "xfs_version.h"
70 #include <linux/namei.h>
71 #include <linux/init.h>
72 #include <linux/mount.h>
73 #include <linux/mempool.h>
74 #include <linux/writeback.h>
75 #include <linux/kthread.h>
77 STATIC
struct quotactl_ops linvfs_qops
;
78 STATIC
struct super_operations linvfs_sops
;
79 STATIC kmem_zone_t
*xfs_vnode_zone
;
80 STATIC kmem_zone_t
*xfs_ioend_zone
;
81 mempool_t
*xfs_ioend_pool
;
83 STATIC
struct xfs_mount_args
*
85 struct super_block
*sb
)
87 struct xfs_mount_args
*args
;
89 args
= kmem_zalloc(sizeof(struct xfs_mount_args
), KM_SLEEP
);
90 args
->logbufs
= args
->logbufsize
= -1;
91 strncpy(args
->fsname
, sb
->s_id
, MAXNAMELEN
);
93 /* Copy the already-parsed mount(2) flags we're interested in */
94 if (sb
->s_flags
& MS_NOATIME
)
95 args
->flags
|= XFSMNT_NOATIME
;
96 if (sb
->s_flags
& MS_DIRSYNC
)
97 args
->flags
|= XFSMNT_DIRSYNC
;
98 if (sb
->s_flags
& MS_SYNCHRONOUS
)
99 args
->flags
|= XFSMNT_WSYNC
;
101 /* Default to 32 bit inodes on Linux all the time */
102 args
->flags
|= XFSMNT_32BITINODES
;
109 unsigned int blockshift
)
111 unsigned int pagefactor
= 1;
112 unsigned int bitshift
= BITS_PER_LONG
- 1;
114 /* Figure out maximum filesize, on Linux this can depend on
115 * the filesystem blocksize (on 32 bit platforms).
116 * __block_prepare_write does this in an [unsigned] long...
117 * page->index << (PAGE_CACHE_SHIFT - bbits)
118 * So, for page sized blocks (4K on 32 bit platforms),
119 * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is
120 * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1)
121 * but for smaller blocksizes it is less (bbits = log2 bsize).
122 * Note1: get_block_t takes a long (implicit cast from above)
123 * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch
124 * can optionally convert the [unsigned] long from above into
125 * an [unsigned] long long.
128 #if BITS_PER_LONG == 32
129 # if defined(CONFIG_LBD)
130 ASSERT(sizeof(sector_t
) == 8);
131 pagefactor
= PAGE_CACHE_SIZE
;
132 bitshift
= BITS_PER_LONG
;
134 pagefactor
= PAGE_CACHE_SIZE
>> (PAGE_CACHE_SHIFT
- blockshift
);
138 return (((__uint64_t
)pagefactor
) << bitshift
) - 1;
141 STATIC __inline__
void
145 switch (inode
->i_mode
& S_IFMT
) {
147 inode
->i_op
= &linvfs_file_inode_operations
;
148 inode
->i_fop
= &linvfs_file_operations
;
149 inode
->i_mapping
->a_ops
= &linvfs_aops
;
152 inode
->i_op
= &linvfs_dir_inode_operations
;
153 inode
->i_fop
= &linvfs_dir_operations
;
156 inode
->i_op
= &linvfs_symlink_inode_operations
;
158 inode
->i_mapping
->a_ops
= &linvfs_aops
;
161 inode
->i_op
= &linvfs_file_inode_operations
;
162 init_special_inode(inode
, inode
->i_mode
, inode
->i_rdev
);
167 STATIC __inline__
void
168 xfs_revalidate_inode(
173 struct inode
*inode
= LINVFS_GET_IP(vp
);
175 inode
->i_mode
= ip
->i_d
.di_mode
;
176 inode
->i_nlink
= ip
->i_d
.di_nlink
;
177 inode
->i_uid
= ip
->i_d
.di_uid
;
178 inode
->i_gid
= ip
->i_d
.di_gid
;
180 switch (inode
->i_mode
& S_IFMT
) {
184 MKDEV(sysv_major(ip
->i_df
.if_u2
.if_rdev
) & 0x1ff,
185 sysv_minor(ip
->i_df
.if_u2
.if_rdev
));
192 inode
->i_blksize
= PAGE_CACHE_SIZE
;
193 inode
->i_generation
= ip
->i_d
.di_gen
;
194 i_size_write(inode
, ip
->i_d
.di_size
);
196 XFS_FSB_TO_BB(mp
, ip
->i_d
.di_nblocks
+ ip
->i_delayed_blks
);
197 inode
->i_atime
.tv_sec
= ip
->i_d
.di_atime
.t_sec
;
198 inode
->i_atime
.tv_nsec
= ip
->i_d
.di_atime
.t_nsec
;
199 inode
->i_mtime
.tv_sec
= ip
->i_d
.di_mtime
.t_sec
;
200 inode
->i_mtime
.tv_nsec
= ip
->i_d
.di_mtime
.t_nsec
;
201 inode
->i_ctime
.tv_sec
= ip
->i_d
.di_ctime
.t_sec
;
202 inode
->i_ctime
.tv_nsec
= ip
->i_d
.di_ctime
.t_nsec
;
203 if (ip
->i_d
.di_flags
& XFS_DIFLAG_IMMUTABLE
)
204 inode
->i_flags
|= S_IMMUTABLE
;
206 inode
->i_flags
&= ~S_IMMUTABLE
;
207 if (ip
->i_d
.di_flags
& XFS_DIFLAG_APPEND
)
208 inode
->i_flags
|= S_APPEND
;
210 inode
->i_flags
&= ~S_APPEND
;
211 if (ip
->i_d
.di_flags
& XFS_DIFLAG_SYNC
)
212 inode
->i_flags
|= S_SYNC
;
214 inode
->i_flags
&= ~S_SYNC
;
215 if (ip
->i_d
.di_flags
& XFS_DIFLAG_NOATIME
)
216 inode
->i_flags
|= S_NOATIME
;
218 inode
->i_flags
&= ~S_NOATIME
;
219 vp
->v_flag
&= ~VMODIFIED
;
223 xfs_initialize_vnode(
226 bhv_desc_t
*inode_bhv
,
229 xfs_inode_t
*ip
= XFS_BHVTOI(inode_bhv
);
230 struct inode
*inode
= LINVFS_GET_IP(vp
);
232 if (!inode_bhv
->bd_vobj
) {
233 vp
->v_vfsp
= bhvtovfs(bdp
);
234 bhv_desc_init(inode_bhv
, ip
, vp
, &xfs_vnodeops
);
235 bhv_insert(VN_BHV_HEAD(vp
), inode_bhv
);
239 * We need to set the ops vectors, and unlock the inode, but if
240 * we have been called during the new inode create process, it is
241 * too early to fill in the Linux inode. We will get called a
242 * second time once the inode is properly set up, and then we can
245 if (ip
->i_d
.di_mode
!= 0 && unlock
&& (inode
->i_state
& I_NEW
)) {
246 xfs_revalidate_inode(XFS_BHVTOM(bdp
), vp
, ip
);
247 xfs_set_inodeops(inode
);
249 ip
->i_flags
&= ~XFS_INEW
;
252 unlock_new_inode(inode
);
260 struct block_device
**bdevp
)
264 *bdevp
= open_bdev_excl(name
, 0, mp
);
265 if (IS_ERR(*bdevp
)) {
266 error
= PTR_ERR(*bdevp
);
267 printk("XFS: Invalid device [%s], error=%d\n", name
, error
);
275 struct block_device
*bdev
)
278 close_bdev_excl(bdev
);
282 STATIC
struct inode
*
284 struct super_block
*sb
)
288 vp
= kmem_cache_alloc(xfs_vnode_zone
, kmem_flags_convert(KM_SLEEP
));
291 return LINVFS_GET_IP(vp
);
295 linvfs_destroy_inode(
298 kmem_zone_free(xfs_vnode_zone
, LINVFS_GET_VP(inode
));
302 linvfs_inode_init_once(
304 kmem_cache_t
*cachep
,
307 vnode_t
*vp
= (vnode_t
*)data
;
309 if ((flags
& (SLAB_CTOR_VERIFY
|SLAB_CTOR_CONSTRUCTOR
)) ==
310 SLAB_CTOR_CONSTRUCTOR
)
311 inode_init_once(LINVFS_GET_IP(vp
));
315 linvfs_init_zones(void)
317 xfs_vnode_zone
= kmem_cache_create("xfs_vnode",
318 sizeof(vnode_t
), 0, SLAB_RECLAIM_ACCOUNT
,
319 linvfs_inode_init_once
, NULL
);
323 xfs_ioend_zone
= kmem_zone_init(sizeof(xfs_ioend_t
), "xfs_ioend");
325 goto out_destroy_vnode_zone
;
327 xfs_ioend_pool
= mempool_create(4 * MAX_BUF_PER_PAGE
,
328 mempool_alloc_slab
, mempool_free_slab
,
331 goto out_free_ioend_zone
;
337 kmem_zone_destroy(xfs_ioend_zone
);
338 out_destroy_vnode_zone
:
339 kmem_zone_destroy(xfs_vnode_zone
);
345 linvfs_destroy_zones(void)
347 mempool_destroy(xfs_ioend_pool
);
348 kmem_zone_destroy(xfs_vnode_zone
);
349 kmem_zone_destroy(xfs_ioend_zone
);
353 * Attempt to flush the inode, this will actually fail
354 * if the inode is pinned, but we dirty the inode again
355 * at the point when it is unpinned after a log write,
356 * since this is when the inode itself becomes flushable.
363 vnode_t
*vp
= LINVFS_GET_VP(inode
);
364 int error
= 0, flags
= FLUSH_INODE
;
367 vn_trace_entry(vp
, __FUNCTION__
, (inst_t
*)__return_address
);
370 VOP_IFLUSH(vp
, flags
, error
);
371 if (error
== EAGAIN
) {
373 VOP_IFLUSH(vp
, flags
| FLUSH_LOG
, error
);
386 vnode_t
*vp
= LINVFS_GET_VP(inode
);
389 vn_trace_entry(vp
, "clear_inode", (inst_t
*)__return_address
);
391 XFS_STATS_INC(vn_rele
);
392 XFS_STATS_INC(vn_remove
);
393 XFS_STATS_INC(vn_reclaim
);
394 XFS_STATS_DEC(vn_active
);
397 * This can happen because xfs_iget_core calls xfs_idestroy if we
398 * find an inode with di_mode == 0 but without IGET_CREATE set.
401 VOP_INACTIVE(vp
, NULL
, cache
);
404 vp
->v_flag
&= ~VMODIFIED
;
408 VOP_RECLAIM(vp
, error
);
410 panic("vn_purge: cannot reclaim");
413 ASSERT(vp
->v_fbhv
== NULL
);
415 #ifdef XFS_VNODE_TRACE
416 ktrace_free(vp
->v_trace
);
421 * Enqueue a work item to be picked up by the vfs xfssyncd thread.
422 * Doing this has two advantages:
423 * - It saves on stack space, which is tight in certain situations
424 * - It can be used (with care) as a mechanism to avoid deadlocks.
425 * Flushing while allocating in a full filesystem requires both.
428 xfs_syncd_queue_work(
431 void (*syncer
)(vfs_t
*, void *))
433 vfs_sync_work_t
*work
;
435 work
= kmem_alloc(sizeof(struct vfs_sync_work
), KM_SLEEP
);
436 INIT_LIST_HEAD(&work
->w_list
);
437 work
->w_syncer
= syncer
;
440 spin_lock(&vfs
->vfs_sync_lock
);
441 list_add_tail(&work
->w_list
, &vfs
->vfs_sync_list
);
442 spin_unlock(&vfs
->vfs_sync_lock
);
443 wake_up_process(vfs
->vfs_sync_task
);
447 * Flush delayed allocate data, attempting to free up reserved space
448 * from existing allocations. At this point a new allocation attempt
449 * has failed with ENOSPC and we are in the process of scratching our
450 * heads, looking about for more room...
453 xfs_flush_inode_work(
457 filemap_flush(((struct inode
*)inode
)->i_mapping
);
458 iput((struct inode
*)inode
);
465 struct inode
*inode
= LINVFS_GET_IP(XFS_ITOV(ip
));
466 struct vfs
*vfs
= XFS_MTOVFS(ip
->i_mount
);
469 xfs_syncd_queue_work(vfs
, inode
, xfs_flush_inode_work
);
470 delay(msecs_to_jiffies(500));
474 * This is the "bigger hammer" version of xfs_flush_inode_work...
475 * (IOW, "If at first you don't succeed, use a Bigger Hammer").
478 xfs_flush_device_work(
482 sync_blockdev(vfs
->vfs_super
->s_bdev
);
483 iput((struct inode
*)inode
);
490 struct inode
*inode
= LINVFS_GET_IP(XFS_ITOV(ip
));
491 struct vfs
*vfs
= XFS_MTOVFS(ip
->i_mount
);
494 xfs_syncd_queue_work(vfs
, inode
, xfs_flush_device_work
);
495 delay(msecs_to_jiffies(500));
496 xfs_log_force(ip
->i_mount
, (xfs_lsn_t
)0, XFS_LOG_FORCE
|XFS_LOG_SYNC
);
499 #define SYNCD_FLAGS (SYNC_FSDATA|SYNC_BDFLUSH|SYNC_ATTR)
507 if (!(vfsp
->vfs_flag
& VFS_RDONLY
))
508 VFS_SYNC(vfsp
, SYNCD_FLAGS
, NULL
, error
);
509 vfsp
->vfs_sync_seq
++;
511 wake_up(&vfsp
->vfs_wait_single_sync_task
);
519 vfs_t
*vfsp
= (vfs_t
*) arg
;
520 struct vfs_sync_work
*work
, *n
;
523 timeleft
= xfs_syncd_centisecs
* msecs_to_jiffies(10);
525 timeleft
= schedule_timeout_interruptible(timeleft
);
528 if (kthread_should_stop())
531 spin_lock(&vfsp
->vfs_sync_lock
);
533 * We can get woken by laptop mode, to do a sync -
534 * that's the (only!) case where the list would be
535 * empty with time remaining.
537 if (!timeleft
|| list_empty(&vfsp
->vfs_sync_list
)) {
539 timeleft
= xfs_syncd_centisecs
*
540 msecs_to_jiffies(10);
541 INIT_LIST_HEAD(&vfsp
->vfs_sync_work
.w_list
);
542 list_add_tail(&vfsp
->vfs_sync_work
.w_list
,
543 &vfsp
->vfs_sync_list
);
545 list_for_each_entry_safe(work
, n
, &vfsp
->vfs_sync_list
, w_list
)
546 list_move(&work
->w_list
, &tmp
);
547 spin_unlock(&vfsp
->vfs_sync_lock
);
549 list_for_each_entry_safe(work
, n
, &tmp
, w_list
) {
550 (*work
->w_syncer
)(vfsp
, work
->w_data
);
551 list_del(&work
->w_list
);
552 if (work
== &vfsp
->vfs_sync_work
)
554 kmem_free(work
, sizeof(struct vfs_sync_work
));
565 vfsp
->vfs_sync_work
.w_syncer
= vfs_sync_worker
;
566 vfsp
->vfs_sync_work
.w_vfs
= vfsp
;
567 vfsp
->vfs_sync_task
= kthread_run(xfssyncd
, vfsp
, "xfssyncd");
568 if (IS_ERR(vfsp
->vfs_sync_task
))
569 return -PTR_ERR(vfsp
->vfs_sync_task
);
577 kthread_stop(vfsp
->vfs_sync_task
);
582 struct super_block
*sb
)
584 vfs_t
*vfsp
= LINVFS_GET_VFS(sb
);
587 linvfs_stop_syncd(vfsp
);
588 VFS_SYNC(vfsp
, SYNC_ATTR
|SYNC_DELWRI
, NULL
, error
);
590 VFS_UNMOUNT(vfsp
, 0, NULL
, error
);
592 printk("XFS unmount got error %d\n", error
);
593 printk("%s: vfsp/0x%p left dangling!\n", __FUNCTION__
, vfsp
);
597 vfs_deallocate(vfsp
);
602 struct super_block
*sb
)
604 vfs_t
*vfsp
= LINVFS_GET_VFS(sb
);
607 if (sb
->s_flags
& MS_RDONLY
) {
608 sb
->s_dirt
= 0; /* paranoia */
611 /* Push the log and superblock a little */
612 VFS_SYNC(vfsp
, SYNC_FSDATA
, NULL
, error
);
618 struct super_block
*sb
,
621 vfs_t
*vfsp
= LINVFS_GET_VFS(sb
);
623 int flags
= SYNC_FSDATA
;
625 if (unlikely(sb
->s_frozen
== SB_FREEZE_WRITE
))
626 flags
= SYNC_QUIESCE
;
628 flags
= SYNC_FSDATA
| (wait
? SYNC_WAIT
: 0);
630 VFS_SYNC(vfsp
, flags
, NULL
, error
);
633 if (unlikely(laptop_mode
)) {
634 int prev_sync_seq
= vfsp
->vfs_sync_seq
;
637 * The disk must be active because we're syncing.
638 * We schedule xfssyncd now (now that the disk is
639 * active) instead of later (when it might not be).
641 wake_up_process(vfsp
->vfs_sync_task
);
643 * We have to wait for the sync iteration to complete.
644 * If we don't, the disk activity caused by the sync
645 * will come after the sync is completed, and that
646 * triggers another sync from laptop mode.
648 wait_event(vfsp
->vfs_wait_single_sync_task
,
649 vfsp
->vfs_sync_seq
!= prev_sync_seq
);
657 struct super_block
*sb
,
658 struct kstatfs
*statp
)
660 vfs_t
*vfsp
= LINVFS_GET_VFS(sb
);
663 VFS_STATVFS(vfsp
, statp
, NULL
, error
);
669 struct super_block
*sb
,
673 vfs_t
*vfsp
= LINVFS_GET_VFS(sb
);
674 struct xfs_mount_args
*args
= xfs_args_allocate(sb
);
677 VFS_PARSEARGS(vfsp
, options
, args
, 1, error
);
679 VFS_MNTUPDATE(vfsp
, flags
, args
, error
);
680 kmem_free(args
, sizeof(*args
));
686 struct super_block
*sb
)
688 VFS_FREEZE(LINVFS_GET_VFS(sb
));
694 struct vfsmount
*mnt
)
696 struct vfs
*vfsp
= LINVFS_GET_VFS(mnt
->mnt_sb
);
699 VFS_SHOWARGS(vfsp
, m
, error
);
705 struct super_block
*sb
,
706 struct fs_quota_stat
*fqs
)
708 struct vfs
*vfsp
= LINVFS_GET_VFS(sb
);
711 VFS_QUOTACTL(vfsp
, Q_XGETQSTAT
, 0, (caddr_t
)fqs
, error
);
717 struct super_block
*sb
,
721 struct vfs
*vfsp
= LINVFS_GET_VFS(sb
);
724 VFS_QUOTACTL(vfsp
, op
, 0, (caddr_t
)&flags
, error
);
730 struct super_block
*sb
,
733 struct fs_disk_quota
*fdq
)
735 struct vfs
*vfsp
= LINVFS_GET_VFS(sb
);
738 getmode
= (type
== USRQUOTA
) ? Q_XGETQUOTA
:
739 ((type
== GRPQUOTA
) ? Q_XGETGQUOTA
: Q_XGETPQUOTA
);
740 VFS_QUOTACTL(vfsp
, getmode
, id
, (caddr_t
)fdq
, error
);
746 struct super_block
*sb
,
749 struct fs_disk_quota
*fdq
)
751 struct vfs
*vfsp
= LINVFS_GET_VFS(sb
);
754 setmode
= (type
== USRQUOTA
) ? Q_XSETQLIM
:
755 ((type
== GRPQUOTA
) ? Q_XSETGQLIM
: Q_XSETPQLIM
);
756 VFS_QUOTACTL(vfsp
, setmode
, id
, (caddr_t
)fdq
, error
);
762 struct super_block
*sb
,
767 struct vfs
*vfsp
= vfs_allocate();
768 struct xfs_mount_args
*args
= xfs_args_allocate(sb
);
769 struct kstatfs statvfs
;
772 vfsp
->vfs_super
= sb
;
773 LINVFS_SET_VFS(sb
, vfsp
);
774 if (sb
->s_flags
& MS_RDONLY
)
775 vfsp
->vfs_flag
|= VFS_RDONLY
;
776 bhv_insert_all_vfsops(vfsp
);
778 VFS_PARSEARGS(vfsp
, (char *)data
, args
, 0, error
);
780 bhv_remove_all_vfsops(vfsp
, 1);
784 sb_min_blocksize(sb
, BBSIZE
);
785 #ifdef CONFIG_XFS_EXPORT
786 sb
->s_export_op
= &linvfs_export_ops
;
788 sb
->s_qcop
= &linvfs_qops
;
789 sb
->s_op
= &linvfs_sops
;
791 VFS_MOUNT(vfsp
, args
, NULL
, error
);
793 bhv_remove_all_vfsops(vfsp
, 1);
797 VFS_STATVFS(vfsp
, &statvfs
, NULL
, error
);
802 sb
->s_magic
= statvfs
.f_type
;
803 sb
->s_blocksize
= statvfs
.f_bsize
;
804 sb
->s_blocksize_bits
= ffs(statvfs
.f_bsize
) - 1;
805 sb
->s_maxbytes
= xfs_max_file_offset(sb
->s_blocksize_bits
);
807 set_posix_acl_flag(sb
);
809 VFS_ROOT(vfsp
, &rootvp
, error
);
813 sb
->s_root
= d_alloc_root(LINVFS_GET_IP(rootvp
));
818 if (is_bad_inode(sb
->s_root
->d_inode
)) {
822 if ((error
= linvfs_start_syncd(vfsp
)))
824 vn_trace_exit(rootvp
, __FUNCTION__
, (inst_t
*)__return_address
);
826 kmem_free(args
, sizeof(*args
));
838 VFS_UNMOUNT(vfsp
, 0, NULL
, error2
);
841 vfs_deallocate(vfsp
);
842 kmem_free(args
, sizeof(*args
));
846 STATIC
struct super_block
*
848 struct file_system_type
*fs_type
,
850 const char *dev_name
,
853 return get_sb_bdev(fs_type
, flags
, dev_name
, data
, linvfs_fill_super
);
856 STATIC
struct super_operations linvfs_sops
= {
857 .alloc_inode
= linvfs_alloc_inode
,
858 .destroy_inode
= linvfs_destroy_inode
,
859 .write_inode
= linvfs_write_inode
,
860 .clear_inode
= linvfs_clear_inode
,
861 .put_super
= linvfs_put_super
,
862 .write_super
= linvfs_write_super
,
863 .sync_fs
= linvfs_sync_super
,
864 .write_super_lockfs
= linvfs_freeze_fs
,
865 .statfs
= linvfs_statfs
,
866 .remount_fs
= linvfs_remount
,
867 .show_options
= linvfs_show_options
,
870 STATIC
struct quotactl_ops linvfs_qops
= {
871 .get_xstate
= linvfs_getxstate
,
872 .set_xstate
= linvfs_setxstate
,
873 .get_xquota
= linvfs_getxquota
,
874 .set_xquota
= linvfs_setxquota
,
877 STATIC
struct file_system_type xfs_fs_type
= {
878 .owner
= THIS_MODULE
,
880 .get_sb
= linvfs_get_sb
,
881 .kill_sb
= kill_block_super
,
882 .fs_flags
= FS_REQUIRES_DEV
,
891 static char message
[] __initdata
= KERN_INFO \
892 XFS_VERSION_STRING
" with " XFS_BUILD_OPTIONS
" enabled\n";
897 xfs_physmem
= si
.totalram
;
901 error
= linvfs_init_zones();
905 error
= pagebuf_init();
914 error
= register_filesystem(&xfs_fs_type
);
917 XFS_DM_INIT(&xfs_fs_type
);
924 linvfs_destroy_zones();
934 XFS_DM_EXIT(&xfs_fs_type
);
935 unregister_filesystem(&xfs_fs_type
);
938 linvfs_destroy_zones();
942 module_init(init_xfs_fs
);
943 module_exit(exit_xfs_fs
);
945 MODULE_AUTHOR("Silicon Graphics, Inc.");
946 MODULE_DESCRIPTION(XFS_VERSION_STRING
" with " XFS_BUILD_OPTIONS
" enabled");
947 MODULE_LICENSE("GPL");