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 linvfs_qops;
63 STATIC struct super_operations linvfs_sops;
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)
72 struct xfs_mount_args *args;
74 args = kmem_zalloc(sizeof(struct xfs_mount_args), KM_SLEEP);
75 args->logbufs = args->logbufsize = -1;
76 strncpy(args->fsname, sb->s_id, MAXNAMELEN);
78 /* Copy the already-parsed mount(2) flags we're interested in */
79 if (sb->s_flags & MS_DIRSYNC)
80 args->flags |= XFSMNT_DIRSYNC;
81 if (sb->s_flags & MS_SYNCHRONOUS)
82 args->flags |= XFSMNT_WSYNC;
84 /* Default to 32 bit inodes on Linux all the time */
85 args->flags |= XFSMNT_32BITINODES;
92 unsigned int blockshift)
94 unsigned int pagefactor = 1;
95 unsigned int bitshift = BITS_PER_LONG - 1;
97 /* Figure out maximum filesize, on Linux this can depend on
98 * the filesystem blocksize (on 32 bit platforms).
99 * __block_prepare_write does this in an [unsigned] long...
100 * page->index << (PAGE_CACHE_SHIFT - bbits)
101 * So, for page sized blocks (4K on 32 bit platforms),
102 * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is
103 * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1)
104 * but for smaller blocksizes it is less (bbits = log2 bsize).
105 * Note1: get_block_t takes a long (implicit cast from above)
106 * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch
107 * can optionally convert the [unsigned] long from above into
108 * an [unsigned] long long.
111 #if BITS_PER_LONG == 32
112 # if defined(CONFIG_LBD)
113 ASSERT(sizeof(sector_t) == 8);
114 pagefactor = PAGE_CACHE_SIZE;
115 bitshift = BITS_PER_LONG;
117 pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift);
121 return (((__uint64_t)pagefactor) << bitshift) - 1;
124 STATIC __inline__ void
128 switch (inode->i_mode & S_IFMT) {
130 inode->i_op = &linvfs_file_inode_operations;
131 inode->i_fop = &linvfs_file_operations;
132 inode->i_mapping->a_ops = &linvfs_aops;
135 inode->i_op = &linvfs_dir_inode_operations;
136 inode->i_fop = &linvfs_dir_operations;
139 inode->i_op = &linvfs_symlink_inode_operations;
141 inode->i_mapping->a_ops = &linvfs_aops;
144 inode->i_op = &linvfs_file_inode_operations;
145 init_special_inode(inode, inode->i_mode, inode->i_rdev);
150 STATIC __inline__ void
151 xfs_revalidate_inode(
156 struct inode *inode = LINVFS_GET_IP(vp);
158 inode->i_mode = ip->i_d.di_mode;
159 inode->i_nlink = ip->i_d.di_nlink;
160 inode->i_uid = ip->i_d.di_uid;
161 inode->i_gid = ip->i_d.di_gid;
163 switch (inode->i_mode & S_IFMT) {
167 MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff,
168 sysv_minor(ip->i_df.if_u2.if_rdev));
175 inode->i_blksize = xfs_preferred_iosize(mp);
176 inode->i_generation = ip->i_d.di_gen;
177 i_size_write(inode, ip->i_d.di_size);
179 XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks);
180 inode->i_atime.tv_sec = ip->i_d.di_atime.t_sec;
181 inode->i_atime.tv_nsec = ip->i_d.di_atime.t_nsec;
182 inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec;
183 inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec;
184 inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec;
185 inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec;
186 if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE)
187 inode->i_flags |= S_IMMUTABLE;
189 inode->i_flags &= ~S_IMMUTABLE;
190 if (ip->i_d.di_flags & XFS_DIFLAG_APPEND)
191 inode->i_flags |= S_APPEND;
193 inode->i_flags &= ~S_APPEND;
194 if (ip->i_d.di_flags & XFS_DIFLAG_SYNC)
195 inode->i_flags |= S_SYNC;
197 inode->i_flags &= ~S_SYNC;
198 if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME)
199 inode->i_flags |= S_NOATIME;
201 inode->i_flags &= ~S_NOATIME;
202 vp->v_flag &= ~VMODIFIED;
206 xfs_initialize_vnode(
209 bhv_desc_t *inode_bhv,
212 xfs_inode_t *ip = XFS_BHVTOI(inode_bhv);
213 struct inode *inode = LINVFS_GET_IP(vp);
215 if (!inode_bhv->bd_vobj) {
216 vp->v_vfsp = bhvtovfs(bdp);
217 bhv_desc_init(inode_bhv, ip, vp, &xfs_vnodeops);
218 bhv_insert(VN_BHV_HEAD(vp), inode_bhv);
222 * We need to set the ops vectors, and unlock the inode, but if
223 * we have been called during the new inode create process, it is
224 * too early to fill in the Linux inode. We will get called a
225 * second time once the inode is properly set up, and then we can
228 if (ip->i_d.di_mode != 0 && unlock && (inode->i_state & I_NEW)) {
229 xfs_revalidate_inode(XFS_BHVTOM(bdp), vp, ip);
230 xfs_set_inodeops(inode);
232 ip->i_flags &= ~XFS_INEW;
235 unlock_new_inode(inode);
243 struct block_device **bdevp)
247 *bdevp = open_bdev_excl(name, 0, mp);
248 if (IS_ERR(*bdevp)) {
249 error = PTR_ERR(*bdevp);
250 printk("XFS: Invalid device [%s], error=%d\n", name, error);
258 struct block_device *bdev)
261 close_bdev_excl(bdev);
265 * Try to write out the superblock using barriers.
271 xfs_buf_t *sbp = xfs_getsb(mp, 0);
276 XFS_BUF_UNDELAYWRITE(sbp);
278 XFS_BUF_UNASYNC(sbp);
279 XFS_BUF_ORDERED(sbp);
282 error = xfs_iowait(sbp);
285 * Clear all the flags we set and possible error state in the
286 * buffer. We only did the write to try out whether barriers
287 * worked and shouldn't leave any traces in the superblock
291 XFS_BUF_ERROR(sbp, 0);
292 XFS_BUF_UNORDERED(sbp);
299 xfs_mountfs_check_barriers(xfs_mount_t *mp)
303 if (mp->m_logdev_targp != mp->m_ddev_targp) {
304 xfs_fs_cmn_err(CE_NOTE, mp,
305 "Disabling barriers, not supported with external log device");
306 mp->m_flags &= ~XFS_MOUNT_BARRIER;
310 if (mp->m_ddev_targp->bt_bdev->bd_disk->queue->ordered ==
311 QUEUE_ORDERED_NONE) {
312 xfs_fs_cmn_err(CE_NOTE, mp,
313 "Disabling barriers, not supported by the underlying device");
314 mp->m_flags &= ~XFS_MOUNT_BARRIER;
318 error = xfs_barrier_test(mp);
320 xfs_fs_cmn_err(CE_NOTE, mp,
321 "Disabling barriers, trial barrier write failed");
322 mp->m_flags &= ~XFS_MOUNT_BARRIER;
328 xfs_blkdev_issue_flush(
329 xfs_buftarg_t *buftarg)
331 blkdev_issue_flush(buftarg->bt_bdev, NULL);
334 STATIC struct inode *
336 struct super_block *sb)
340 vp = kmem_zone_alloc(xfs_vnode_zone, KM_SLEEP);
343 return LINVFS_GET_IP(vp);
347 linvfs_destroy_inode(
350 kmem_zone_free(xfs_vnode_zone, LINVFS_GET_VP(inode));
354 linvfs_inode_init_once(
359 if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
360 SLAB_CTOR_CONSTRUCTOR)
361 inode_init_once(LINVFS_GET_IP((vnode_t *)vnode));
367 xfs_vnode_zone = kmem_zone_init_flags(sizeof(vnode_t), "xfs_vnode_t",
368 KM_ZONE_HWALIGN | KM_ZONE_RECLAIM,
369 linvfs_inode_init_once);
373 xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend");
375 goto out_destroy_vnode_zone;
377 xfs_ioend_pool = mempool_create(4 * MAX_BUF_PER_PAGE,
378 mempool_alloc_slab, mempool_free_slab,
381 goto out_free_ioend_zone;
385 kmem_zone_destroy(xfs_ioend_zone);
386 out_destroy_vnode_zone:
387 kmem_zone_destroy(xfs_vnode_zone);
393 xfs_destroy_zones(void)
395 mempool_destroy(xfs_ioend_pool);
396 kmem_zone_destroy(xfs_vnode_zone);
397 kmem_zone_destroy(xfs_ioend_zone);
401 * Attempt to flush the inode, this will actually fail
402 * if the inode is pinned, but we dirty the inode again
403 * at the point when it is unpinned after a log write,
404 * since this is when the inode itself becomes flushable.
411 vnode_t *vp = LINVFS_GET_VP(inode);
412 int error = 0, flags = FLUSH_INODE;
415 vn_trace_entry(vp, __FUNCTION__, (inst_t *)__return_address);
418 VOP_IFLUSH(vp, flags, error);
419 if (error == EAGAIN) {
421 VOP_IFLUSH(vp, flags | FLUSH_LOG, error);
434 vnode_t *vp = LINVFS_GET_VP(inode);
437 vn_trace_entry(vp, "clear_inode", (inst_t *)__return_address);
439 XFS_STATS_INC(vn_rele);
440 XFS_STATS_INC(vn_remove);
441 XFS_STATS_INC(vn_reclaim);
442 XFS_STATS_DEC(vn_active);
445 * This can happen because xfs_iget_core calls xfs_idestroy if we
446 * find an inode with di_mode == 0 but without IGET_CREATE set.
449 VOP_INACTIVE(vp, NULL, cache);
452 vp->v_flag &= ~VMODIFIED;
456 VOP_RECLAIM(vp, error);
458 panic("vn_purge: cannot reclaim");
461 ASSERT(vp->v_fbhv == NULL);
463 #ifdef XFS_VNODE_TRACE
464 ktrace_free(vp->v_trace);
469 * Enqueue a work item to be picked up by the vfs xfssyncd thread.
470 * Doing this has two advantages:
471 * - It saves on stack space, which is tight in certain situations
472 * - It can be used (with care) as a mechanism to avoid deadlocks.
473 * Flushing while allocating in a full filesystem requires both.
476 xfs_syncd_queue_work(
479 void (*syncer)(vfs_t *, void *))
481 vfs_sync_work_t *work;
483 work = kmem_alloc(sizeof(struct vfs_sync_work), KM_SLEEP);
484 INIT_LIST_HEAD(&work->w_list);
485 work->w_syncer = syncer;
488 spin_lock(&vfs->vfs_sync_lock);
489 list_add_tail(&work->w_list, &vfs->vfs_sync_list);
490 spin_unlock(&vfs->vfs_sync_lock);
491 wake_up_process(vfs->vfs_sync_task);
495 * Flush delayed allocate data, attempting to free up reserved space
496 * from existing allocations. At this point a new allocation attempt
497 * has failed with ENOSPC and we are in the process of scratching our
498 * heads, looking about for more room...
501 xfs_flush_inode_work(
505 filemap_flush(((struct inode *)inode)->i_mapping);
506 iput((struct inode *)inode);
513 struct inode *inode = LINVFS_GET_IP(XFS_ITOV(ip));
514 struct vfs *vfs = XFS_MTOVFS(ip->i_mount);
517 xfs_syncd_queue_work(vfs, inode, xfs_flush_inode_work);
518 delay(msecs_to_jiffies(500));
522 * This is the "bigger hammer" version of xfs_flush_inode_work...
523 * (IOW, "If at first you don't succeed, use a Bigger Hammer").
526 xfs_flush_device_work(
530 sync_blockdev(vfs->vfs_super->s_bdev);
531 iput((struct inode *)inode);
538 struct inode *inode = LINVFS_GET_IP(XFS_ITOV(ip));
539 struct vfs *vfs = XFS_MTOVFS(ip->i_mount);
542 xfs_syncd_queue_work(vfs, inode, xfs_flush_device_work);
543 delay(msecs_to_jiffies(500));
544 xfs_log_force(ip->i_mount, (xfs_lsn_t)0, XFS_LOG_FORCE|XFS_LOG_SYNC);
547 #define SYNCD_FLAGS (SYNC_FSDATA|SYNC_BDFLUSH|SYNC_ATTR)
555 if (!(vfsp->vfs_flag & VFS_RDONLY))
556 VFS_SYNC(vfsp, SYNCD_FLAGS, NULL, error);
557 vfsp->vfs_sync_seq++;
559 wake_up(&vfsp->vfs_wait_single_sync_task);
567 vfs_t *vfsp = (vfs_t *) arg;
568 struct vfs_sync_work *work, *n;
571 timeleft = xfs_syncd_centisecs * msecs_to_jiffies(10);
573 timeleft = schedule_timeout_interruptible(timeleft);
576 if (kthread_should_stop() && list_empty(&vfsp->vfs_sync_list))
579 spin_lock(&vfsp->vfs_sync_lock);
581 * We can get woken by laptop mode, to do a sync -
582 * that's the (only!) case where the list would be
583 * empty with time remaining.
585 if (!timeleft || list_empty(&vfsp->vfs_sync_list)) {
587 timeleft = xfs_syncd_centisecs *
588 msecs_to_jiffies(10);
589 INIT_LIST_HEAD(&vfsp->vfs_sync_work.w_list);
590 list_add_tail(&vfsp->vfs_sync_work.w_list,
591 &vfsp->vfs_sync_list);
593 list_for_each_entry_safe(work, n, &vfsp->vfs_sync_list, w_list)
594 list_move(&work->w_list, &tmp);
595 spin_unlock(&vfsp->vfs_sync_lock);
597 list_for_each_entry_safe(work, n, &tmp, w_list) {
598 (*work->w_syncer)(vfsp, work->w_data);
599 list_del(&work->w_list);
600 if (work == &vfsp->vfs_sync_work)
602 kmem_free(work, sizeof(struct vfs_sync_work));
613 vfsp->vfs_sync_work.w_syncer = vfs_sync_worker;
614 vfsp->vfs_sync_work.w_vfs = vfsp;
615 vfsp->vfs_sync_task = kthread_run(xfssyncd, vfsp, "xfssyncd");
616 if (IS_ERR(vfsp->vfs_sync_task))
617 return -PTR_ERR(vfsp->vfs_sync_task);
625 kthread_stop(vfsp->vfs_sync_task);
630 struct super_block *sb)
632 vfs_t *vfsp = LINVFS_GET_VFS(sb);
635 linvfs_stop_syncd(vfsp);
636 VFS_SYNC(vfsp, SYNC_ATTR|SYNC_DELWRI, NULL, error);
638 VFS_UNMOUNT(vfsp, 0, NULL, error);
640 printk("XFS unmount got error %d\n", error);
641 printk("%s: vfsp/0x%p left dangling!\n", __FUNCTION__, vfsp);
645 vfs_deallocate(vfsp);
650 struct super_block *sb)
652 vfs_t *vfsp = LINVFS_GET_VFS(sb);
655 if (sb->s_flags & MS_RDONLY) {
656 sb->s_dirt = 0; /* paranoia */
659 /* Push the log and superblock a little */
660 VFS_SYNC(vfsp, SYNC_FSDATA, NULL, error);
666 struct super_block *sb,
669 vfs_t *vfsp = LINVFS_GET_VFS(sb);
671 int flags = SYNC_FSDATA;
673 if (unlikely(sb->s_frozen == SB_FREEZE_WRITE))
674 flags = SYNC_QUIESCE;
676 flags = SYNC_FSDATA | (wait ? SYNC_WAIT : 0);
678 VFS_SYNC(vfsp, flags, NULL, error);
681 if (unlikely(laptop_mode)) {
682 int prev_sync_seq = vfsp->vfs_sync_seq;
685 * The disk must be active because we're syncing.
686 * We schedule xfssyncd now (now that the disk is
687 * active) instead of later (when it might not be).
689 wake_up_process(vfsp->vfs_sync_task);
691 * We have to wait for the sync iteration to complete.
692 * If we don't, the disk activity caused by the sync
693 * will come after the sync is completed, and that
694 * triggers another sync from laptop mode.
696 wait_event(vfsp->vfs_wait_single_sync_task,
697 vfsp->vfs_sync_seq != prev_sync_seq);
705 struct super_block *sb,
706 struct kstatfs *statp)
708 vfs_t *vfsp = LINVFS_GET_VFS(sb);
711 VFS_STATVFS(vfsp, statp, NULL, error);
717 struct super_block *sb,
721 vfs_t *vfsp = LINVFS_GET_VFS(sb);
722 struct xfs_mount_args *args = xfs_args_allocate(sb);
725 VFS_PARSEARGS(vfsp, options, args, 1, error);
727 VFS_MNTUPDATE(vfsp, flags, args, error);
728 kmem_free(args, sizeof(*args));
734 struct super_block *sb)
736 VFS_FREEZE(LINVFS_GET_VFS(sb));
742 struct vfsmount *mnt)
744 struct vfs *vfsp = LINVFS_GET_VFS(mnt->mnt_sb);
747 VFS_SHOWARGS(vfsp, m, error);
753 struct super_block *sb,
756 struct vfs *vfsp = LINVFS_GET_VFS(sb);
759 VFS_QUOTACTL(vfsp, Q_XQUOTASYNC, 0, (caddr_t)NULL, error);
765 struct super_block *sb,
766 struct fs_quota_stat *fqs)
768 struct vfs *vfsp = LINVFS_GET_VFS(sb);
771 VFS_QUOTACTL(vfsp, Q_XGETQSTAT, 0, (caddr_t)fqs, error);
777 struct super_block *sb,
781 struct vfs *vfsp = LINVFS_GET_VFS(sb);
784 VFS_QUOTACTL(vfsp, op, 0, (caddr_t)&flags, error);
790 struct super_block *sb,
793 struct fs_disk_quota *fdq)
795 struct vfs *vfsp = LINVFS_GET_VFS(sb);
798 getmode = (type == USRQUOTA) ? Q_XGETQUOTA :
799 ((type == GRPQUOTA) ? Q_XGETGQUOTA : Q_XGETPQUOTA);
800 VFS_QUOTACTL(vfsp, getmode, id, (caddr_t)fdq, error);
806 struct super_block *sb,
809 struct fs_disk_quota *fdq)
811 struct vfs *vfsp = LINVFS_GET_VFS(sb);
814 setmode = (type == USRQUOTA) ? Q_XSETQLIM :
815 ((type == GRPQUOTA) ? Q_XSETGQLIM : Q_XSETPQLIM);
816 VFS_QUOTACTL(vfsp, setmode, id, (caddr_t)fdq, error);
822 struct super_block *sb,
827 struct vfs *vfsp = vfs_allocate();
828 struct xfs_mount_args *args = xfs_args_allocate(sb);
829 struct kstatfs statvfs;
832 vfsp->vfs_super = sb;
833 LINVFS_SET_VFS(sb, vfsp);
834 if (sb->s_flags & MS_RDONLY)
835 vfsp->vfs_flag |= VFS_RDONLY;
836 bhv_insert_all_vfsops(vfsp);
838 VFS_PARSEARGS(vfsp, (char *)data, args, 0, error);
840 bhv_remove_all_vfsops(vfsp, 1);
844 sb_min_blocksize(sb, BBSIZE);
845 #ifdef CONFIG_XFS_EXPORT
846 sb->s_export_op = &linvfs_export_ops;
848 sb->s_qcop = &linvfs_qops;
849 sb->s_op = &linvfs_sops;
851 VFS_MOUNT(vfsp, args, NULL, error);
853 bhv_remove_all_vfsops(vfsp, 1);
857 VFS_STATVFS(vfsp, &statvfs, NULL, error);
862 sb->s_magic = statvfs.f_type;
863 sb->s_blocksize = statvfs.f_bsize;
864 sb->s_blocksize_bits = ffs(statvfs.f_bsize) - 1;
865 sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits);
867 set_posix_acl_flag(sb);
869 VFS_ROOT(vfsp, &rootvp, error);
873 sb->s_root = d_alloc_root(LINVFS_GET_IP(rootvp));
878 if (is_bad_inode(sb->s_root->d_inode)) {
882 if ((error = linvfs_start_syncd(vfsp)))
884 vn_trace_exit(rootvp, __FUNCTION__, (inst_t *)__return_address);
886 kmem_free(args, sizeof(*args));
898 VFS_UNMOUNT(vfsp, 0, NULL, error2);
901 vfs_deallocate(vfsp);
902 kmem_free(args, sizeof(*args));
906 STATIC struct super_block *
908 struct file_system_type *fs_type,
910 const char *dev_name,
913 return get_sb_bdev(fs_type, flags, dev_name, data, linvfs_fill_super);
916 STATIC struct super_operations linvfs_sops = {
917 .alloc_inode = linvfs_alloc_inode,
918 .destroy_inode = linvfs_destroy_inode,
919 .write_inode = linvfs_write_inode,
920 .clear_inode = linvfs_clear_inode,
921 .put_super = linvfs_put_super,
922 .write_super = linvfs_write_super,
923 .sync_fs = linvfs_sync_super,
924 .write_super_lockfs = linvfs_freeze_fs,
925 .statfs = linvfs_statfs,
926 .remount_fs = linvfs_remount,
927 .show_options = linvfs_show_options,
930 STATIC struct quotactl_ops linvfs_qops = {
931 .quota_sync = linvfs_quotasync,
932 .get_xstate = linvfs_getxstate,
933 .set_xstate = linvfs_setxstate,
934 .get_xquota = linvfs_getxquota,
935 .set_xquota = linvfs_setxquota,
938 STATIC struct file_system_type xfs_fs_type = {
939 .owner = THIS_MODULE,
941 .get_sb = linvfs_get_sb,
942 .kill_sb = kill_block_super,
943 .fs_flags = FS_REQUIRES_DEV,
952 static char message[] __initdata = KERN_INFO \
953 XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled\n";
958 xfs_physmem = si.totalram;
962 error = xfs_init_zones();
966 error = xfs_buf_init();
975 error = register_filesystem(&xfs_fs_type);
978 XFS_DM_INIT(&xfs_fs_type);
995 XFS_DM_EXIT(&xfs_fs_type);
996 unregister_filesystem(&xfs_fs_type);
1003 module_init(init_xfs_fs);
1004 module_exit(exit_xfs_fs);
1006 MODULE_AUTHOR("Silicon Graphics, Inc.");
1007 MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled");
1008 MODULE_LICENSE("GPL");