2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 #include "xfs_trans.h"
28 #include "xfs_alloc.h"
29 #include "xfs_dmapi.h"
30 #include "xfs_quota.h"
31 #include "xfs_mount.h"
32 #include "xfs_bmap_btree.h"
33 #include "xfs_alloc_btree.h"
34 #include "xfs_ialloc_btree.h"
35 #include "xfs_dir_sf.h"
36 #include "xfs_dir2_sf.h"
37 #include "xfs_attr_sf.h"
38 #include "xfs_dinode.h"
39 #include "xfs_inode.h"
40 #include "xfs_btree.h"
41 #include "xfs_ialloc.h"
43 #include "xfs_rtalloc.h"
44 #include "xfs_error.h"
45 #include "xfs_itable.h"
51 #include "xfs_buf_item.h"
52 #include "xfs_utils.h"
53 #include "xfs_version.h"
55 #include <linux/namei.h>
56 #include <linux/init.h>
57 #include <linux/mount.h>
58 #include <linux/mempool.h>
59 #include <linux/writeback.h>
60 #include <linux/kthread.h>
62 STATIC
struct quotactl_ops xfs_quotactl_operations
;
63 STATIC
struct super_operations xfs_super_operations
;
64 STATIC kmem_zone_t
*xfs_vnode_zone
;
65 STATIC kmem_zone_t
*xfs_ioend_zone
;
66 mempool_t
*xfs_ioend_pool
;
68 STATIC
struct xfs_mount_args
*
70 struct super_block
*sb
,
73 struct xfs_mount_args
*args
;
75 args
= kmem_zalloc(sizeof(struct xfs_mount_args
), KM_SLEEP
);
76 args
->logbufs
= args
->logbufsize
= -1;
77 strncpy(args
->fsname
, sb
->s_id
, MAXNAMELEN
);
79 /* Copy the already-parsed mount(2) flags we're interested in */
80 if (sb
->s_flags
& MS_DIRSYNC
)
81 args
->flags
|= XFSMNT_DIRSYNC
;
82 if (sb
->s_flags
& MS_SYNCHRONOUS
)
83 args
->flags
|= XFSMNT_WSYNC
;
85 args
->flags
|= XFSMNT_QUIET
;
86 args
->flags
|= XFSMNT_32BITINODES
;
93 unsigned int blockshift
)
95 unsigned int pagefactor
= 1;
96 unsigned int bitshift
= BITS_PER_LONG
- 1;
98 /* Figure out maximum filesize, on Linux this can depend on
99 * the filesystem blocksize (on 32 bit platforms).
100 * __block_prepare_write does this in an [unsigned] long...
101 * page->index << (PAGE_CACHE_SHIFT - bbits)
102 * So, for page sized blocks (4K on 32 bit platforms),
103 * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is
104 * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1)
105 * but for smaller blocksizes it is less (bbits = log2 bsize).
106 * Note1: get_block_t takes a long (implicit cast from above)
107 * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch
108 * can optionally convert the [unsigned] long from above into
109 * an [unsigned] long long.
112 #if BITS_PER_LONG == 32
113 # if defined(CONFIG_LBD)
114 ASSERT(sizeof(sector_t
) == 8);
115 pagefactor
= PAGE_CACHE_SIZE
;
116 bitshift
= BITS_PER_LONG
;
118 pagefactor
= PAGE_CACHE_SIZE
>> (PAGE_CACHE_SHIFT
- blockshift
);
122 return (((__uint64_t
)pagefactor
) << bitshift
) - 1;
125 STATIC __inline__
void
129 switch (inode
->i_mode
& S_IFMT
) {
131 inode
->i_op
= &xfs_inode_operations
;
132 inode
->i_fop
= &xfs_file_operations
;
133 inode
->i_mapping
->a_ops
= &xfs_address_space_operations
;
136 inode
->i_op
= &xfs_dir_inode_operations
;
137 inode
->i_fop
= &xfs_dir_file_operations
;
140 inode
->i_op
= &xfs_symlink_inode_operations
;
142 inode
->i_mapping
->a_ops
= &xfs_address_space_operations
;
145 inode
->i_op
= &xfs_inode_operations
;
146 init_special_inode(inode
, inode
->i_mode
, inode
->i_rdev
);
151 STATIC __inline__
void
152 xfs_revalidate_inode(
157 struct inode
*inode
= vn_to_inode(vp
);
159 inode
->i_mode
= ip
->i_d
.di_mode
;
160 inode
->i_nlink
= ip
->i_d
.di_nlink
;
161 inode
->i_uid
= ip
->i_d
.di_uid
;
162 inode
->i_gid
= ip
->i_d
.di_gid
;
164 switch (inode
->i_mode
& S_IFMT
) {
168 MKDEV(sysv_major(ip
->i_df
.if_u2
.if_rdev
) & 0x1ff,
169 sysv_minor(ip
->i_df
.if_u2
.if_rdev
));
176 inode
->i_blksize
= xfs_preferred_iosize(mp
);
177 inode
->i_generation
= ip
->i_d
.di_gen
;
178 i_size_write(inode
, ip
->i_d
.di_size
);
180 XFS_FSB_TO_BB(mp
, ip
->i_d
.di_nblocks
+ ip
->i_delayed_blks
);
181 inode
->i_atime
.tv_sec
= ip
->i_d
.di_atime
.t_sec
;
182 inode
->i_atime
.tv_nsec
= ip
->i_d
.di_atime
.t_nsec
;
183 inode
->i_mtime
.tv_sec
= ip
->i_d
.di_mtime
.t_sec
;
184 inode
->i_mtime
.tv_nsec
= ip
->i_d
.di_mtime
.t_nsec
;
185 inode
->i_ctime
.tv_sec
= ip
->i_d
.di_ctime
.t_sec
;
186 inode
->i_ctime
.tv_nsec
= ip
->i_d
.di_ctime
.t_nsec
;
187 if (ip
->i_d
.di_flags
& XFS_DIFLAG_IMMUTABLE
)
188 inode
->i_flags
|= S_IMMUTABLE
;
190 inode
->i_flags
&= ~S_IMMUTABLE
;
191 if (ip
->i_d
.di_flags
& XFS_DIFLAG_APPEND
)
192 inode
->i_flags
|= S_APPEND
;
194 inode
->i_flags
&= ~S_APPEND
;
195 if (ip
->i_d
.di_flags
& XFS_DIFLAG_SYNC
)
196 inode
->i_flags
|= S_SYNC
;
198 inode
->i_flags
&= ~S_SYNC
;
199 if (ip
->i_d
.di_flags
& XFS_DIFLAG_NOATIME
)
200 inode
->i_flags
|= S_NOATIME
;
202 inode
->i_flags
&= ~S_NOATIME
;
203 vp
->v_flag
&= ~VMODIFIED
;
207 xfs_initialize_vnode(
210 bhv_desc_t
*inode_bhv
,
213 xfs_inode_t
*ip
= XFS_BHVTOI(inode_bhv
);
214 struct inode
*inode
= vn_to_inode(vp
);
216 if (!inode_bhv
->bd_vobj
) {
217 vp
->v_vfsp
= bhvtovfs(bdp
);
218 bhv_desc_init(inode_bhv
, ip
, vp
, &xfs_vnodeops
);
219 bhv_insert(VN_BHV_HEAD(vp
), inode_bhv
);
223 * We need to set the ops vectors, and unlock the inode, but if
224 * we have been called during the new inode create process, it is
225 * too early to fill in the Linux inode. We will get called a
226 * second time once the inode is properly set up, and then we can
229 if (ip
->i_d
.di_mode
!= 0 && unlock
&& (inode
->i_state
& I_NEW
)) {
230 xfs_revalidate_inode(XFS_BHVTOM(bdp
), vp
, ip
);
231 xfs_set_inodeops(inode
);
233 ip
->i_flags
&= ~XFS_INEW
;
236 unlock_new_inode(inode
);
244 struct block_device
**bdevp
)
248 *bdevp
= open_bdev_excl(name
, 0, mp
);
249 if (IS_ERR(*bdevp
)) {
250 error
= PTR_ERR(*bdevp
);
251 printk("XFS: Invalid device [%s], error=%d\n", name
, error
);
259 struct block_device
*bdev
)
262 close_bdev_excl(bdev
);
266 * Try to write out the superblock using barriers.
272 xfs_buf_t
*sbp
= xfs_getsb(mp
, 0);
277 XFS_BUF_UNDELAYWRITE(sbp
);
279 XFS_BUF_UNASYNC(sbp
);
280 XFS_BUF_ORDERED(sbp
);
283 error
= xfs_iowait(sbp
);
286 * Clear all the flags we set and possible error state in the
287 * buffer. We only did the write to try out whether barriers
288 * worked and shouldn't leave any traces in the superblock
292 XFS_BUF_ERROR(sbp
, 0);
293 XFS_BUF_UNORDERED(sbp
);
300 xfs_mountfs_check_barriers(xfs_mount_t
*mp
)
304 if (mp
->m_logdev_targp
!= mp
->m_ddev_targp
) {
305 xfs_fs_cmn_err(CE_NOTE
, mp
,
306 "Disabling barriers, not supported with external log device");
307 mp
->m_flags
&= ~XFS_MOUNT_BARRIER
;
311 if (mp
->m_ddev_targp
->bt_bdev
->bd_disk
->queue
->ordered
==
312 QUEUE_ORDERED_NONE
) {
313 xfs_fs_cmn_err(CE_NOTE
, mp
,
314 "Disabling barriers, not supported by the underlying device");
315 mp
->m_flags
&= ~XFS_MOUNT_BARRIER
;
319 error
= xfs_barrier_test(mp
);
321 xfs_fs_cmn_err(CE_NOTE
, mp
,
322 "Disabling barriers, trial barrier write failed");
323 mp
->m_flags
&= ~XFS_MOUNT_BARRIER
;
329 xfs_blkdev_issue_flush(
330 xfs_buftarg_t
*buftarg
)
332 blkdev_issue_flush(buftarg
->bt_bdev
, NULL
);
335 STATIC
struct inode
*
337 struct super_block
*sb
)
341 vp
= kmem_zone_alloc(xfs_vnode_zone
, KM_SLEEP
);
344 return vn_to_inode(vp
);
348 xfs_fs_destroy_inode(
351 kmem_zone_free(xfs_vnode_zone
, vn_from_inode(inode
));
355 xfs_fs_inode_init_once(
360 if ((flags
& (SLAB_CTOR_VERIFY
|SLAB_CTOR_CONSTRUCTOR
)) ==
361 SLAB_CTOR_CONSTRUCTOR
)
362 inode_init_once(vn_to_inode((vnode_t
*)vnode
));
368 xfs_vnode_zone
= kmem_zone_init_flags(sizeof(vnode_t
), "xfs_vnode_t",
369 KM_ZONE_HWALIGN
| KM_ZONE_RECLAIM
|
371 xfs_fs_inode_init_once
);
375 xfs_ioend_zone
= kmem_zone_init(sizeof(xfs_ioend_t
), "xfs_ioend");
377 goto out_destroy_vnode_zone
;
379 xfs_ioend_pool
= mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE
,
382 goto out_free_ioend_zone
;
386 kmem_zone_destroy(xfs_ioend_zone
);
387 out_destroy_vnode_zone
:
388 kmem_zone_destroy(xfs_vnode_zone
);
394 xfs_destroy_zones(void)
396 mempool_destroy(xfs_ioend_pool
);
397 kmem_zone_destroy(xfs_vnode_zone
);
398 kmem_zone_destroy(xfs_ioend_zone
);
402 * Attempt to flush the inode, this will actually fail
403 * if the inode is pinned, but we dirty the inode again
404 * at the point when it is unpinned after a log write,
405 * since this is when the inode itself becomes flushable.
412 vnode_t
*vp
= vn_from_inode(inode
);
413 int error
= 0, flags
= FLUSH_INODE
;
416 vn_trace_entry(vp
, __FUNCTION__
, (inst_t
*)__return_address
);
419 VOP_IFLUSH(vp
, flags
, error
);
420 if (error
== EAGAIN
) {
422 VOP_IFLUSH(vp
, flags
| FLUSH_LOG
, error
);
435 vnode_t
*vp
= vn_from_inode(inode
);
438 vn_trace_entry(vp
, __FUNCTION__
, (inst_t
*)__return_address
);
440 XFS_STATS_INC(vn_rele
);
441 XFS_STATS_INC(vn_remove
);
442 XFS_STATS_INC(vn_reclaim
);
443 XFS_STATS_DEC(vn_active
);
446 * This can happen because xfs_iget_core calls xfs_idestroy if we
447 * find an inode with di_mode == 0 but without IGET_CREATE set.
450 VOP_INACTIVE(vp
, NULL
, cache
);
453 vp
->v_flag
&= ~VMODIFIED
;
457 VOP_RECLAIM(vp
, error
);
459 panic("vn_purge: cannot reclaim");
462 ASSERT(vp
->v_fbhv
== NULL
);
464 #ifdef XFS_VNODE_TRACE
465 ktrace_free(vp
->v_trace
);
470 * Enqueue a work item to be picked up by the vfs xfssyncd thread.
471 * Doing this has two advantages:
472 * - It saves on stack space, which is tight in certain situations
473 * - It can be used (with care) as a mechanism to avoid deadlocks.
474 * Flushing while allocating in a full filesystem requires both.
477 xfs_syncd_queue_work(
480 void (*syncer
)(bhv_vfs_t
*, void *))
482 struct bhv_vfs_sync_work
*work
;
484 work
= kmem_alloc(sizeof(struct bhv_vfs_sync_work
), KM_SLEEP
);
485 INIT_LIST_HEAD(&work
->w_list
);
486 work
->w_syncer
= syncer
;
489 spin_lock(&vfs
->vfs_sync_lock
);
490 list_add_tail(&work
->w_list
, &vfs
->vfs_sync_list
);
491 spin_unlock(&vfs
->vfs_sync_lock
);
492 wake_up_process(vfs
->vfs_sync_task
);
496 * Flush delayed allocate data, attempting to free up reserved space
497 * from existing allocations. At this point a new allocation attempt
498 * has failed with ENOSPC and we are in the process of scratching our
499 * heads, looking about for more room...
502 xfs_flush_inode_work(
506 filemap_flush(((struct inode
*)inode
)->i_mapping
);
507 iput((struct inode
*)inode
);
514 struct inode
*inode
= vn_to_inode(XFS_ITOV(ip
));
515 struct bhv_vfs
*vfs
= XFS_MTOVFS(ip
->i_mount
);
518 xfs_syncd_queue_work(vfs
, inode
, xfs_flush_inode_work
);
519 delay(msecs_to_jiffies(500));
523 * This is the "bigger hammer" version of xfs_flush_inode_work...
524 * (IOW, "If at first you don't succeed, use a Bigger Hammer").
527 xfs_flush_device_work(
531 sync_blockdev(vfs
->vfs_super
->s_bdev
);
532 iput((struct inode
*)inode
);
539 struct inode
*inode
= vn_to_inode(XFS_ITOV(ip
));
540 struct bhv_vfs
*vfs
= XFS_MTOVFS(ip
->i_mount
);
543 xfs_syncd_queue_work(vfs
, inode
, xfs_flush_device_work
);
544 delay(msecs_to_jiffies(500));
545 xfs_log_force(ip
->i_mount
, (xfs_lsn_t
)0, XFS_LOG_FORCE
|XFS_LOG_SYNC
);
555 if (!(vfsp
->vfs_flag
& VFS_RDONLY
))
556 error
= bhv_vfs_sync(vfsp
, SYNC_FSDATA
| SYNC_BDFLUSH
| \
557 SYNC_ATTR
| SYNC_REFCACHE
, NULL
);
558 vfsp
->vfs_sync_seq
++;
560 wake_up(&vfsp
->vfs_wait_single_sync_task
);
568 bhv_vfs_t
*vfsp
= (bhv_vfs_t
*) arg
;
569 bhv_vfs_sync_work_t
*work
, *n
;
572 timeleft
= xfs_syncd_centisecs
* msecs_to_jiffies(10);
574 timeleft
= schedule_timeout_interruptible(timeleft
);
577 if (kthread_should_stop() && list_empty(&vfsp
->vfs_sync_list
))
580 spin_lock(&vfsp
->vfs_sync_lock
);
582 * We can get woken by laptop mode, to do a sync -
583 * that's the (only!) case where the list would be
584 * empty with time remaining.
586 if (!timeleft
|| list_empty(&vfsp
->vfs_sync_list
)) {
588 timeleft
= xfs_syncd_centisecs
*
589 msecs_to_jiffies(10);
590 INIT_LIST_HEAD(&vfsp
->vfs_sync_work
.w_list
);
591 list_add_tail(&vfsp
->vfs_sync_work
.w_list
,
592 &vfsp
->vfs_sync_list
);
594 list_for_each_entry_safe(work
, n
, &vfsp
->vfs_sync_list
, w_list
)
595 list_move(&work
->w_list
, &tmp
);
596 spin_unlock(&vfsp
->vfs_sync_lock
);
598 list_for_each_entry_safe(work
, n
, &tmp
, w_list
) {
599 (*work
->w_syncer
)(vfsp
, work
->w_data
);
600 list_del(&work
->w_list
);
601 if (work
== &vfsp
->vfs_sync_work
)
603 kmem_free(work
, sizeof(struct bhv_vfs_sync_work
));
614 vfsp
->vfs_sync_work
.w_syncer
= vfs_sync_worker
;
615 vfsp
->vfs_sync_work
.w_vfs
= vfsp
;
616 vfsp
->vfs_sync_task
= kthread_run(xfssyncd
, vfsp
, "xfssyncd");
617 if (IS_ERR(vfsp
->vfs_sync_task
))
618 return -PTR_ERR(vfsp
->vfs_sync_task
);
626 kthread_stop(vfsp
->vfs_sync_task
);
631 struct super_block
*sb
)
633 bhv_vfs_t
*vfsp
= vfs_from_sb(sb
);
636 xfs_fs_stop_syncd(vfsp
);
637 bhv_vfs_sync(vfsp
, SYNC_ATTR
| SYNC_DELWRI
, NULL
);
638 error
= bhv_vfs_unmount(vfsp
, 0, NULL
);
640 printk("XFS: unmount got error=%d\n", error
);
641 printk("%s: vfs=0x%p left dangling!\n", __FUNCTION__
, vfsp
);
643 vfs_deallocate(vfsp
);
649 struct super_block
*sb
)
651 if (!(sb
->s_flags
& MS_RDONLY
))
652 bhv_vfs_sync(vfs_from_sb(sb
), SYNC_FSDATA
, NULL
);
658 struct super_block
*sb
,
661 bhv_vfs_t
*vfsp
= vfs_from_sb(sb
);
665 if (unlikely(sb
->s_frozen
== SB_FREEZE_WRITE
))
666 flags
= SYNC_QUIESCE
;
668 flags
= SYNC_FSDATA
| (wait
? SYNC_WAIT
: 0);
670 error
= bhv_vfs_sync(vfsp
, flags
, NULL
);
673 if (unlikely(laptop_mode
)) {
674 int prev_sync_seq
= vfsp
->vfs_sync_seq
;
677 * The disk must be active because we're syncing.
678 * We schedule xfssyncd now (now that the disk is
679 * active) instead of later (when it might not be).
681 wake_up_process(vfsp
->vfs_sync_task
);
683 * We have to wait for the sync iteration to complete.
684 * If we don't, the disk activity caused by the sync
685 * will come after the sync is completed, and that
686 * triggers another sync from laptop mode.
688 wait_event(vfsp
->vfs_wait_single_sync_task
,
689 vfsp
->vfs_sync_seq
!= prev_sync_seq
);
697 struct super_block
*sb
,
698 struct kstatfs
*statp
)
700 return -bhv_vfs_statvfs(vfs_from_sb(sb
), statp
, NULL
);
705 struct super_block
*sb
,
709 bhv_vfs_t
*vfsp
= vfs_from_sb(sb
);
710 struct xfs_mount_args
*args
= xfs_args_allocate(sb
, 0);
713 error
= bhv_vfs_parseargs(vfsp
, options
, args
, 1);
715 error
= bhv_vfs_mntupdate(vfsp
, flags
, args
);
716 kmem_free(args
, sizeof(*args
));
722 struct super_block
*sb
)
724 bhv_vfs_freeze(vfs_from_sb(sb
));
730 struct vfsmount
*mnt
)
732 return -bhv_vfs_showargs(vfs_from_sb(mnt
->mnt_sb
), m
);
737 struct super_block
*sb
,
740 return -bhv_vfs_quotactl(vfs_from_sb(sb
), Q_XQUOTASYNC
, 0, NULL
);
745 struct super_block
*sb
,
746 struct fs_quota_stat
*fqs
)
748 return -bhv_vfs_quotactl(vfs_from_sb(sb
), Q_XGETQSTAT
, 0, (caddr_t
)fqs
);
753 struct super_block
*sb
,
757 return -bhv_vfs_quotactl(vfs_from_sb(sb
), op
, 0, (caddr_t
)&flags
);
762 struct super_block
*sb
,
765 struct fs_disk_quota
*fdq
)
767 return -bhv_vfs_quotactl(vfs_from_sb(sb
),
768 (type
== USRQUOTA
) ? Q_XGETQUOTA
:
769 ((type
== GRPQUOTA
) ? Q_XGETGQUOTA
:
770 Q_XGETPQUOTA
), id
, (caddr_t
)fdq
);
775 struct super_block
*sb
,
778 struct fs_disk_quota
*fdq
)
780 return -bhv_vfs_quotactl(vfs_from_sb(sb
),
781 (type
== USRQUOTA
) ? Q_XSETQLIM
:
782 ((type
== GRPQUOTA
) ? Q_XSETGQLIM
:
783 Q_XSETPQLIM
), id
, (caddr_t
)fdq
);
788 struct super_block
*sb
,
793 struct bhv_vfs
*vfsp
= vfs_allocate(sb
);
794 struct xfs_mount_args
*args
= xfs_args_allocate(sb
, silent
);
795 struct kstatfs statvfs
;
798 bhv_insert_all_vfsops(vfsp
);
800 error
= bhv_vfs_parseargs(vfsp
, (char *)data
, args
, 0);
802 bhv_remove_all_vfsops(vfsp
, 1);
806 sb_min_blocksize(sb
, BBSIZE
);
807 #ifdef CONFIG_XFS_EXPORT
808 sb
->s_export_op
= &xfs_export_operations
;
810 sb
->s_qcop
= &xfs_quotactl_operations
;
811 sb
->s_op
= &xfs_super_operations
;
813 error
= bhv_vfs_mount(vfsp
, args
, NULL
);
815 bhv_remove_all_vfsops(vfsp
, 1);
819 error
= bhv_vfs_statvfs(vfsp
, &statvfs
, NULL
);
824 sb
->s_magic
= statvfs
.f_type
;
825 sb
->s_blocksize
= statvfs
.f_bsize
;
826 sb
->s_blocksize_bits
= ffs(statvfs
.f_bsize
) - 1;
827 sb
->s_maxbytes
= xfs_max_file_offset(sb
->s_blocksize_bits
);
829 set_posix_acl_flag(sb
);
831 error
= bhv_vfs_root(vfsp
, &rootvp
);
835 sb
->s_root
= d_alloc_root(vn_to_inode(rootvp
));
840 if (is_bad_inode(sb
->s_root
->d_inode
)) {
844 if ((error
= xfs_fs_start_syncd(vfsp
)))
846 vn_trace_exit(rootvp
, __FUNCTION__
, (inst_t
*)__return_address
);
848 kmem_free(args
, sizeof(*args
));
860 bhv_vfs_unmount(vfsp
, 0, NULL
);
863 vfs_deallocate(vfsp
);
864 kmem_free(args
, sizeof(*args
));
868 STATIC
struct super_block
*
870 struct file_system_type
*fs_type
,
872 const char *dev_name
,
875 return get_sb_bdev(fs_type
, flags
, dev_name
, data
, xfs_fs_fill_super
);
878 STATIC
struct super_operations xfs_super_operations
= {
879 .alloc_inode
= xfs_fs_alloc_inode
,
880 .destroy_inode
= xfs_fs_destroy_inode
,
881 .write_inode
= xfs_fs_write_inode
,
882 .clear_inode
= xfs_fs_clear_inode
,
883 .put_super
= xfs_fs_put_super
,
884 .write_super
= xfs_fs_write_super
,
885 .sync_fs
= xfs_fs_sync_super
,
886 .write_super_lockfs
= xfs_fs_lockfs
,
887 .statfs
= xfs_fs_statfs
,
888 .remount_fs
= xfs_fs_remount
,
889 .show_options
= xfs_fs_show_options
,
892 STATIC
struct quotactl_ops xfs_quotactl_operations
= {
893 .quota_sync
= xfs_fs_quotasync
,
894 .get_xstate
= xfs_fs_getxstate
,
895 .set_xstate
= xfs_fs_setxstate
,
896 .get_xquota
= xfs_fs_getxquota
,
897 .set_xquota
= xfs_fs_setxquota
,
900 STATIC
struct file_system_type xfs_fs_type
= {
901 .owner
= THIS_MODULE
,
903 .get_sb
= xfs_fs_get_sb
,
904 .kill_sb
= kill_block_super
,
905 .fs_flags
= FS_REQUIRES_DEV
,
914 static char message
[] __initdata
= KERN_INFO \
915 XFS_VERSION_STRING
" with " XFS_BUILD_OPTIONS
" enabled\n";
920 xfs_physmem
= si
.totalram
;
924 error
= xfs_init_zones();
928 error
= xfs_buf_init();
937 error
= register_filesystem(&xfs_fs_type
);
956 unregister_filesystem(&xfs_fs_type
);
963 module_init(init_xfs_fs
);
964 module_exit(exit_xfs_fs
);
966 MODULE_AUTHOR("Silicon Graphics, Inc.");
967 MODULE_DESCRIPTION(XFS_VERSION_STRING
" with " XFS_BUILD_OPTIONS
" enabled");
968 MODULE_LICENSE("GPL");