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/writeback.h>
75 STATIC
struct quotactl_ops linvfs_qops
;
76 STATIC
struct super_operations linvfs_sops
;
77 STATIC kmem_zone_t
*linvfs_inode_zone
;
79 STATIC
struct xfs_mount_args
*
81 struct super_block
*sb
)
83 struct xfs_mount_args
*args
;
85 args
= kmem_zalloc(sizeof(struct xfs_mount_args
), KM_SLEEP
);
86 args
->logbufs
= args
->logbufsize
= -1;
87 strncpy(args
->fsname
, sb
->s_id
, MAXNAMELEN
);
89 /* Copy the already-parsed mount(2) flags we're interested in */
90 if (sb
->s_flags
& MS_NOATIME
)
91 args
->flags
|= XFSMNT_NOATIME
;
92 if (sb
->s_flags
& MS_DIRSYNC
)
93 args
->flags
|= XFSMNT_DIRSYNC
;
94 if (sb
->s_flags
& MS_SYNCHRONOUS
)
95 args
->flags
|= XFSMNT_WSYNC
;
97 /* Default to 32 bit inodes on Linux all the time */
98 args
->flags
|= XFSMNT_32BITINODES
;
105 unsigned int blockshift
)
107 unsigned int pagefactor
= 1;
108 unsigned int bitshift
= BITS_PER_LONG
- 1;
110 /* Figure out maximum filesize, on Linux this can depend on
111 * the filesystem blocksize (on 32 bit platforms).
112 * __block_prepare_write does this in an [unsigned] long...
113 * page->index << (PAGE_CACHE_SHIFT - bbits)
114 * So, for page sized blocks (4K on 32 bit platforms),
115 * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is
116 * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1)
117 * but for smaller blocksizes it is less (bbits = log2 bsize).
118 * Note1: get_block_t takes a long (implicit cast from above)
119 * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch
120 * can optionally convert the [unsigned] long from above into
121 * an [unsigned] long long.
124 #if BITS_PER_LONG == 32
125 # if defined(CONFIG_LBD)
126 ASSERT(sizeof(sector_t
) == 8);
127 pagefactor
= PAGE_CACHE_SIZE
;
128 bitshift
= BITS_PER_LONG
;
130 pagefactor
= PAGE_CACHE_SIZE
>> (PAGE_CACHE_SHIFT
- blockshift
);
134 return (((__uint64_t
)pagefactor
) << bitshift
) - 1;
137 STATIC __inline__
void
141 vnode_t
*vp
= LINVFS_GET_VP(inode
);
143 if (vp
->v_type
== VNON
) {
145 } else if (S_ISREG(inode
->i_mode
)) {
146 inode
->i_op
= &linvfs_file_inode_operations
;
147 inode
->i_fop
= &linvfs_file_operations
;
148 inode
->i_mapping
->a_ops
= &linvfs_aops
;
149 } else if (S_ISDIR(inode
->i_mode
)) {
150 inode
->i_op
= &linvfs_dir_inode_operations
;
151 inode
->i_fop
= &linvfs_dir_operations
;
152 } else if (S_ISLNK(inode
->i_mode
)) {
153 inode
->i_op
= &linvfs_symlink_inode_operations
;
155 inode
->i_mapping
->a_ops
= &linvfs_aops
;
157 inode
->i_op
= &linvfs_file_inode_operations
;
158 init_special_inode(inode
, inode
->i_mode
, inode
->i_rdev
);
162 STATIC __inline__
void
163 xfs_revalidate_inode(
168 struct inode
*inode
= LINVFS_GET_IP(vp
);
170 inode
->i_mode
= (ip
->i_d
.di_mode
& MODEMASK
) | VTTOIF(vp
->v_type
);
171 inode
->i_nlink
= ip
->i_d
.di_nlink
;
172 inode
->i_uid
= ip
->i_d
.di_uid
;
173 inode
->i_gid
= ip
->i_d
.di_gid
;
174 if (((1 << vp
->v_type
) & ((1<<VBLK
) | (1<<VCHR
))) == 0) {
177 xfs_dev_t dev
= ip
->i_df
.if_u2
.if_rdev
;
178 inode
->i_rdev
= MKDEV(sysv_major(dev
) & 0x1ff, sysv_minor(dev
));
180 inode
->i_blksize
= PAGE_CACHE_SIZE
;
181 inode
->i_generation
= ip
->i_d
.di_gen
;
182 i_size_write(inode
, ip
->i_d
.di_size
);
184 XFS_FSB_TO_BB(mp
, ip
->i_d
.di_nblocks
+ ip
->i_delayed_blks
);
185 inode
->i_atime
.tv_sec
= ip
->i_d
.di_atime
.t_sec
;
186 inode
->i_atime
.tv_nsec
= ip
->i_d
.di_atime
.t_nsec
;
187 inode
->i_mtime
.tv_sec
= ip
->i_d
.di_mtime
.t_sec
;
188 inode
->i_mtime
.tv_nsec
= ip
->i_d
.di_mtime
.t_nsec
;
189 inode
->i_ctime
.tv_sec
= ip
->i_d
.di_ctime
.t_sec
;
190 inode
->i_ctime
.tv_nsec
= ip
->i_d
.di_ctime
.t_nsec
;
191 if (ip
->i_d
.di_flags
& XFS_DIFLAG_IMMUTABLE
)
192 inode
->i_flags
|= S_IMMUTABLE
;
194 inode
->i_flags
&= ~S_IMMUTABLE
;
195 if (ip
->i_d
.di_flags
& XFS_DIFLAG_APPEND
)
196 inode
->i_flags
|= S_APPEND
;
198 inode
->i_flags
&= ~S_APPEND
;
199 if (ip
->i_d
.di_flags
& XFS_DIFLAG_SYNC
)
200 inode
->i_flags
|= S_SYNC
;
202 inode
->i_flags
&= ~S_SYNC
;
203 if (ip
->i_d
.di_flags
& XFS_DIFLAG_NOATIME
)
204 inode
->i_flags
|= S_NOATIME
;
206 inode
->i_flags
&= ~S_NOATIME
;
207 vp
->v_flag
&= ~VMODIFIED
;
211 xfs_initialize_vnode(
214 bhv_desc_t
*inode_bhv
,
217 xfs_inode_t
*ip
= XFS_BHVTOI(inode_bhv
);
218 struct inode
*inode
= LINVFS_GET_IP(vp
);
220 if (!inode_bhv
->bd_vobj
) {
221 vp
->v_vfsp
= bhvtovfs(bdp
);
222 bhv_desc_init(inode_bhv
, ip
, vp
, &xfs_vnodeops
);
223 bhv_insert(VN_BHV_HEAD(vp
), inode_bhv
);
227 * We need to set the ops vectors, and unlock the inode, but if
228 * we have been called during the new inode create process, it is
229 * too early to fill in the Linux inode. We will get called a
230 * second time once the inode is properly set up, and then we can
233 if (ip
->i_d
.di_mode
!= 0 && unlock
&& (inode
->i_state
& I_NEW
)) {
234 vp
->v_type
= IFTOVT(ip
->i_d
.di_mode
);
235 xfs_revalidate_inode(XFS_BHVTOM(bdp
), vp
, ip
);
236 xfs_set_inodeops(inode
);
238 ip
->i_flags
&= ~XFS_INEW
;
241 unlock_new_inode(inode
);
249 struct block_device
**bdevp
)
253 *bdevp
= open_bdev_excl(name
, 0, mp
);
254 if (IS_ERR(*bdevp
)) {
255 error
= PTR_ERR(*bdevp
);
256 printk("XFS: Invalid device [%s], error=%d\n", name
, error
);
264 struct block_device
*bdev
)
267 close_bdev_excl(bdev
);
271 STATIC
struct inode
*
273 struct super_block
*sb
)
277 vp
= (vnode_t
*)kmem_cache_alloc(linvfs_inode_zone
,
278 kmem_flags_convert(KM_SLEEP
));
281 return LINVFS_GET_IP(vp
);
285 linvfs_destroy_inode(
288 kmem_cache_free(linvfs_inode_zone
, LINVFS_GET_VP(inode
));
294 kmem_cache_t
*cachep
,
297 vnode_t
*vp
= (vnode_t
*)data
;
299 if ((flags
& (SLAB_CTOR_VERIFY
|SLAB_CTOR_CONSTRUCTOR
)) ==
300 SLAB_CTOR_CONSTRUCTOR
)
301 inode_init_once(LINVFS_GET_IP(vp
));
305 init_inodecache( void )
307 linvfs_inode_zone
= kmem_cache_create("linvfs_icache",
308 sizeof(vnode_t
), 0, SLAB_RECLAIM_ACCOUNT
,
310 if (linvfs_inode_zone
== NULL
)
316 destroy_inodecache( void )
318 if (kmem_cache_destroy(linvfs_inode_zone
))
319 printk(KERN_WARNING
"%s: cache still in use!\n", __FUNCTION__
);
323 * Attempt to flush the inode, this will actually fail
324 * if the inode is pinned, but we dirty the inode again
325 * at the point when it is unpinned after a log write,
326 * since this is when the inode itself becomes flushable.
333 vnode_t
*vp
= LINVFS_GET_VP(inode
);
334 int error
= 0, flags
= FLUSH_INODE
;
337 vn_trace_entry(vp
, __FUNCTION__
, (inst_t
*)__return_address
);
340 VOP_IFLUSH(vp
, flags
, error
);
341 if (error
== EAGAIN
) {
343 VOP_IFLUSH(vp
, flags
| FLUSH_LOG
, error
);
356 vnode_t
*vp
= LINVFS_GET_VP(inode
);
360 vn_trace_entry(vp
, __FUNCTION__
, (inst_t
*)__return_address
);
362 * Do all our cleanup, and remove this vnode.
370 * Enqueue a work item to be picked up by the vfs xfssyncd thread.
371 * Doing this has two advantages:
372 * - It saves on stack space, which is tight in certain situations
373 * - It can be used (with care) as a mechanism to avoid deadlocks.
374 * Flushing while allocating in a full filesystem requires both.
377 xfs_syncd_queue_work(
380 void (*syncer
)(vfs_t
*, void *))
382 vfs_sync_work_t
*work
;
384 work
= kmem_alloc(sizeof(struct vfs_sync_work
), KM_SLEEP
);
385 INIT_LIST_HEAD(&work
->w_list
);
386 work
->w_syncer
= syncer
;
389 spin_lock(&vfs
->vfs_sync_lock
);
390 list_add_tail(&work
->w_list
, &vfs
->vfs_sync_list
);
391 spin_unlock(&vfs
->vfs_sync_lock
);
392 wake_up_process(vfs
->vfs_sync_task
);
396 * Flush delayed allocate data, attempting to free up reserved space
397 * from existing allocations. At this point a new allocation attempt
398 * has failed with ENOSPC and we are in the process of scratching our
399 * heads, looking about for more room...
402 xfs_flush_inode_work(
406 filemap_flush(((struct inode
*)inode
)->i_mapping
);
407 iput((struct inode
*)inode
);
414 struct inode
*inode
= LINVFS_GET_IP(XFS_ITOV(ip
));
415 struct vfs
*vfs
= XFS_MTOVFS(ip
->i_mount
);
418 xfs_syncd_queue_work(vfs
, inode
, xfs_flush_inode_work
);
423 * This is the "bigger hammer" version of xfs_flush_inode_work...
424 * (IOW, "If at first you don't succeed, use a Bigger Hammer").
427 xfs_flush_device_work(
431 sync_blockdev(vfs
->vfs_super
->s_bdev
);
432 iput((struct inode
*)inode
);
439 struct inode
*inode
= LINVFS_GET_IP(XFS_ITOV(ip
));
440 struct vfs
*vfs
= XFS_MTOVFS(ip
->i_mount
);
443 xfs_syncd_queue_work(vfs
, inode
, xfs_flush_device_work
);
445 xfs_log_force(ip
->i_mount
, (xfs_lsn_t
)0, XFS_LOG_FORCE
|XFS_LOG_SYNC
);
448 #define SYNCD_FLAGS (SYNC_FSDATA|SYNC_BDFLUSH|SYNC_ATTR)
456 if (!(vfsp
->vfs_flag
& VFS_RDONLY
))
457 VFS_SYNC(vfsp
, SYNCD_FLAGS
, NULL
, error
);
458 vfsp
->vfs_sync_seq
++;
460 wake_up(&vfsp
->vfs_wait_single_sync_task
);
468 vfs_t
*vfsp
= (vfs_t
*) arg
;
469 struct list_head tmp
;
470 struct vfs_sync_work
*work
, *n
;
472 daemonize("xfssyncd");
474 vfsp
->vfs_sync_work
.w_vfs
= vfsp
;
475 vfsp
->vfs_sync_work
.w_syncer
= vfs_sync_worker
;
476 vfsp
->vfs_sync_task
= current
;
478 wake_up(&vfsp
->vfs_wait_sync_task
);
480 INIT_LIST_HEAD(&tmp
);
481 timeleft
= (xfs_syncd_centisecs
* HZ
) / 100;
483 set_current_state(TASK_INTERRUPTIBLE
);
484 timeleft
= schedule_timeout(timeleft
);
487 if (vfsp
->vfs_flag
& VFS_UMOUNT
)
490 spin_lock(&vfsp
->vfs_sync_lock
);
492 * We can get woken by laptop mode, to do a sync -
493 * that's the (only!) case where the list would be
494 * empty with time remaining.
496 if (!timeleft
|| list_empty(&vfsp
->vfs_sync_list
)) {
498 timeleft
= (xfs_syncd_centisecs
* HZ
) / 100;
499 INIT_LIST_HEAD(&vfsp
->vfs_sync_work
.w_list
);
500 list_add_tail(&vfsp
->vfs_sync_work
.w_list
,
501 &vfsp
->vfs_sync_list
);
503 list_for_each_entry_safe(work
, n
, &vfsp
->vfs_sync_list
, w_list
)
504 list_move(&work
->w_list
, &tmp
);
505 spin_unlock(&vfsp
->vfs_sync_lock
);
507 list_for_each_entry_safe(work
, n
, &tmp
, w_list
) {
508 (*work
->w_syncer
)(vfsp
, work
->w_data
);
509 list_del(&work
->w_list
);
510 if (work
== &vfsp
->vfs_sync_work
)
512 kmem_free(work
, sizeof(struct vfs_sync_work
));
516 vfsp
->vfs_sync_task
= NULL
;
518 wake_up(&vfsp
->vfs_wait_sync_task
);
529 pid
= kernel_thread(xfssyncd
, (void *) vfsp
,
530 CLONE_VM
| CLONE_FS
| CLONE_FILES
);
533 wait_event(vfsp
->vfs_wait_sync_task
, vfsp
->vfs_sync_task
);
541 vfsp
->vfs_flag
|= VFS_UMOUNT
;
544 wake_up_process(vfsp
->vfs_sync_task
);
545 wait_event(vfsp
->vfs_wait_sync_task
, !vfsp
->vfs_sync_task
);
550 struct super_block
*sb
)
552 vfs_t
*vfsp
= LINVFS_GET_VFS(sb
);
555 linvfs_stop_syncd(vfsp
);
556 VFS_SYNC(vfsp
, SYNC_ATTR
|SYNC_DELWRI
, NULL
, error
);
558 VFS_UNMOUNT(vfsp
, 0, NULL
, error
);
560 printk("XFS unmount got error %d\n", error
);
561 printk("%s: vfsp/0x%p left dangling!\n", __FUNCTION__
, vfsp
);
565 vfs_deallocate(vfsp
);
570 struct super_block
*sb
)
572 vfs_t
*vfsp
= LINVFS_GET_VFS(sb
);
575 if (sb
->s_flags
& MS_RDONLY
) {
576 sb
->s_dirt
= 0; /* paranoia */
579 /* Push the log and superblock a little */
580 VFS_SYNC(vfsp
, SYNC_FSDATA
, NULL
, error
);
586 struct super_block
*sb
,
589 vfs_t
*vfsp
= LINVFS_GET_VFS(sb
);
591 int flags
= SYNC_FSDATA
;
593 if (unlikely(sb
->s_frozen
== SB_FREEZE_WRITE
))
594 flags
= SYNC_QUIESCE
;
596 flags
= SYNC_FSDATA
| (wait
? SYNC_WAIT
: 0);
598 VFS_SYNC(vfsp
, flags
, NULL
, error
);
601 if (unlikely(laptop_mode
)) {
602 int prev_sync_seq
= vfsp
->vfs_sync_seq
;
605 * The disk must be active because we're syncing.
606 * We schedule xfssyncd now (now that the disk is
607 * active) instead of later (when it might not be).
609 wake_up_process(vfsp
->vfs_sync_task
);
611 * We have to wait for the sync iteration to complete.
612 * If we don't, the disk activity caused by the sync
613 * will come after the sync is completed, and that
614 * triggers another sync from laptop mode.
616 wait_event(vfsp
->vfs_wait_single_sync_task
,
617 vfsp
->vfs_sync_seq
!= prev_sync_seq
);
625 struct super_block
*sb
,
626 struct kstatfs
*statp
)
628 vfs_t
*vfsp
= LINVFS_GET_VFS(sb
);
631 VFS_STATVFS(vfsp
, statp
, NULL
, error
);
637 struct super_block
*sb
,
641 vfs_t
*vfsp
= LINVFS_GET_VFS(sb
);
642 struct xfs_mount_args
*args
= xfs_args_allocate(sb
);
645 VFS_PARSEARGS(vfsp
, options
, args
, 1, error
);
647 VFS_MNTUPDATE(vfsp
, flags
, args
, error
);
648 kmem_free(args
, sizeof(*args
));
654 struct super_block
*sb
)
656 VFS_FREEZE(LINVFS_GET_VFS(sb
));
662 struct vfsmount
*mnt
)
664 struct vfs
*vfsp
= LINVFS_GET_VFS(mnt
->mnt_sb
);
667 VFS_SHOWARGS(vfsp
, m
, error
);
673 struct super_block
*sb
,
674 struct fs_quota_stat
*fqs
)
676 struct vfs
*vfsp
= LINVFS_GET_VFS(sb
);
679 VFS_QUOTACTL(vfsp
, Q_XGETQSTAT
, 0, (caddr_t
)fqs
, error
);
685 struct super_block
*sb
,
689 struct vfs
*vfsp
= LINVFS_GET_VFS(sb
);
692 VFS_QUOTACTL(vfsp
, op
, 0, (caddr_t
)&flags
, error
);
698 struct super_block
*sb
,
701 struct fs_disk_quota
*fdq
)
703 struct vfs
*vfsp
= LINVFS_GET_VFS(sb
);
706 getmode
= (type
== USRQUOTA
) ? Q_XGETQUOTA
:
707 ((type
== GRPQUOTA
) ? Q_XGETGQUOTA
: Q_XGETPQUOTA
);
708 VFS_QUOTACTL(vfsp
, getmode
, id
, (caddr_t
)fdq
, error
);
714 struct super_block
*sb
,
717 struct fs_disk_quota
*fdq
)
719 struct vfs
*vfsp
= LINVFS_GET_VFS(sb
);
722 setmode
= (type
== USRQUOTA
) ? Q_XSETQLIM
:
723 ((type
== GRPQUOTA
) ? Q_XSETGQLIM
: Q_XSETPQLIM
);
724 VFS_QUOTACTL(vfsp
, setmode
, id
, (caddr_t
)fdq
, error
);
730 struct super_block
*sb
,
735 struct vfs
*vfsp
= vfs_allocate();
736 struct xfs_mount_args
*args
= xfs_args_allocate(sb
);
737 struct kstatfs statvfs
;
740 vfsp
->vfs_super
= sb
;
741 LINVFS_SET_VFS(sb
, vfsp
);
742 if (sb
->s_flags
& MS_RDONLY
)
743 vfsp
->vfs_flag
|= VFS_RDONLY
;
744 bhv_insert_all_vfsops(vfsp
);
746 VFS_PARSEARGS(vfsp
, (char *)data
, args
, 0, error
);
748 bhv_remove_all_vfsops(vfsp
, 1);
752 sb_min_blocksize(sb
, BBSIZE
);
753 #ifdef CONFIG_XFS_EXPORT
754 sb
->s_export_op
= &linvfs_export_ops
;
756 sb
->s_qcop
= &linvfs_qops
;
757 sb
->s_op
= &linvfs_sops
;
759 VFS_MOUNT(vfsp
, args
, NULL
, error
);
761 bhv_remove_all_vfsops(vfsp
, 1);
765 VFS_STATVFS(vfsp
, &statvfs
, NULL
, error
);
770 sb
->s_magic
= statvfs
.f_type
;
771 sb
->s_blocksize
= statvfs
.f_bsize
;
772 sb
->s_blocksize_bits
= ffs(statvfs
.f_bsize
) - 1;
773 sb
->s_maxbytes
= xfs_max_file_offset(sb
->s_blocksize_bits
);
775 set_posix_acl_flag(sb
);
777 VFS_ROOT(vfsp
, &rootvp
, error
);
781 sb
->s_root
= d_alloc_root(LINVFS_GET_IP(rootvp
));
786 if (is_bad_inode(sb
->s_root
->d_inode
)) {
790 if ((error
= linvfs_start_syncd(vfsp
)))
792 vn_trace_exit(rootvp
, __FUNCTION__
, (inst_t
*)__return_address
);
794 kmem_free(args
, sizeof(*args
));
806 VFS_UNMOUNT(vfsp
, 0, NULL
, error2
);
809 vfs_deallocate(vfsp
);
810 kmem_free(args
, sizeof(*args
));
814 STATIC
struct super_block
*
816 struct file_system_type
*fs_type
,
818 const char *dev_name
,
821 return get_sb_bdev(fs_type
, flags
, dev_name
, data
, linvfs_fill_super
);
824 STATIC
struct super_operations linvfs_sops
= {
825 .alloc_inode
= linvfs_alloc_inode
,
826 .destroy_inode
= linvfs_destroy_inode
,
827 .write_inode
= linvfs_write_inode
,
828 .clear_inode
= linvfs_clear_inode
,
829 .put_super
= linvfs_put_super
,
830 .write_super
= linvfs_write_super
,
831 .sync_fs
= linvfs_sync_super
,
832 .write_super_lockfs
= linvfs_freeze_fs
,
833 .statfs
= linvfs_statfs
,
834 .remount_fs
= linvfs_remount
,
835 .show_options
= linvfs_show_options
,
838 STATIC
struct quotactl_ops linvfs_qops
= {
839 .get_xstate
= linvfs_getxstate
,
840 .set_xstate
= linvfs_setxstate
,
841 .get_xquota
= linvfs_getxquota
,
842 .set_xquota
= linvfs_setxquota
,
845 STATIC
struct file_system_type xfs_fs_type
= {
846 .owner
= THIS_MODULE
,
848 .get_sb
= linvfs_get_sb
,
849 .kill_sb
= kill_block_super
,
850 .fs_flags
= FS_REQUIRES_DEV
,
859 static char message
[] __initdata
= KERN_INFO \
860 XFS_VERSION_STRING
" with " XFS_BUILD_OPTIONS
" enabled\n";
865 xfs_physmem
= si
.totalram
;
869 error
= init_inodecache();
871 goto undo_inodecache
;
873 error
= pagebuf_init();
882 error
= register_filesystem(&xfs_fs_type
);
885 XFS_DM_INIT(&xfs_fs_type
);
892 destroy_inodecache();
902 XFS_DM_EXIT(&xfs_fs_type
);
903 unregister_filesystem(&xfs_fs_type
);
906 destroy_inodecache();
910 module_init(init_xfs_fs
);
911 module_exit(exit_xfs_fs
);
913 MODULE_AUTHOR("Silicon Graphics, Inc.");
914 MODULE_DESCRIPTION(XFS_VERSION_STRING
" with " XFS_BUILD_OPTIONS
" enabled");
915 MODULE_LICENSE("GPL");