2 * Copyright (c) 2000-2006 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"
27 #include "xfs_alloc.h"
28 #include "xfs_dmapi.h"
29 #include "xfs_quota.h"
30 #include "xfs_mount.h"
31 #include "xfs_bmap_btree.h"
32 #include "xfs_alloc_btree.h"
33 #include "xfs_ialloc_btree.h"
34 #include "xfs_dir2_sf.h"
35 #include "xfs_attr_sf.h"
36 #include "xfs_dinode.h"
37 #include "xfs_inode.h"
38 #include "xfs_btree.h"
39 #include "xfs_ialloc.h"
41 #include "xfs_rtalloc.h"
42 #include "xfs_error.h"
43 #include "xfs_itable.h"
49 #include "xfs_buf_item.h"
50 #include "xfs_utils.h"
51 #include "xfs_version.h"
53 #include <linux/namei.h>
54 #include <linux/init.h>
55 #include <linux/mount.h>
56 #include <linux/mempool.h>
57 #include <linux/writeback.h>
58 #include <linux/kthread.h>
59 #include <linux/freezer.h>
61 STATIC struct quotactl_ops xfs_quotactl_operations;
62 STATIC struct super_operations xfs_super_operations;
63 STATIC kmem_zone_t *xfs_vnode_zone;
64 STATIC kmem_zone_t *xfs_ioend_zone;
65 mempool_t *xfs_ioend_pool;
67 STATIC struct xfs_mount_args *
69 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 args->flags |= XFSMNT_QUIET;
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 = &xfs_inode_operations;
131 inode->i_fop = &xfs_file_operations;
132 inode->i_mapping->a_ops = &xfs_address_space_operations;
135 inode->i_op = &xfs_dir_inode_operations;
136 inode->i_fop = &xfs_dir_file_operations;
139 inode->i_op = &xfs_symlink_inode_operations;
141 inode->i_mapping->a_ops = &xfs_address_space_operations;
144 inode->i_op = &xfs_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 = vn_to_inode(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;
162 inode->i_tag = ip->i_d.di_tag;
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_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_IUNLINK)
191 inode->i_flags |= S_IUNLINK;
193 inode->i_flags &= ~S_IUNLINK;
194 if (ip->i_d.di_flags & XFS_DIFLAG_BARRIER)
195 inode->i_flags |= S_BARRIER;
197 inode->i_flags &= ~S_BARRIER;
198 if (ip->i_d.di_flags & XFS_DIFLAG_APPEND)
199 inode->i_flags |= S_APPEND;
201 inode->i_flags &= ~S_APPEND;
202 if (ip->i_d.di_flags & XFS_DIFLAG_SYNC)
203 inode->i_flags |= S_SYNC;
205 inode->i_flags &= ~S_SYNC;
206 if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME)
207 inode->i_flags |= S_NOATIME;
209 inode->i_flags &= ~S_NOATIME;
210 vp->v_flag &= ~VMODIFIED;
214 xfs_initialize_vnode(
217 bhv_desc_t *inode_bhv,
220 xfs_inode_t *ip = XFS_BHVTOI(inode_bhv);
221 struct inode *inode = vn_to_inode(vp);
223 if (!inode_bhv->bd_vobj) {
224 vp->v_vfsp = bhvtovfs(bdp);
225 bhv_desc_init(inode_bhv, ip, vp, &xfs_vnodeops);
226 bhv_insert(VN_BHV_HEAD(vp), inode_bhv);
230 * We need to set the ops vectors, and unlock the inode, but if
231 * we have been called during the new inode create process, it is
232 * too early to fill in the Linux inode. We will get called a
233 * second time once the inode is properly set up, and then we can
236 if (ip->i_d.di_mode != 0 && unlock && (inode->i_state & I_NEW)) {
237 xfs_revalidate_inode(XFS_BHVTOM(bdp), vp, ip);
238 xfs_set_inodeops(inode);
240 xfs_iflags_clear(ip, XFS_INEW);
243 unlock_new_inode(inode);
251 struct block_device **bdevp)
255 *bdevp = open_bdev_excl(name, 0, mp);
256 if (IS_ERR(*bdevp)) {
257 error = PTR_ERR(*bdevp);
258 printk("XFS: Invalid device [%s], error=%d\n", name, error);
266 struct block_device *bdev)
269 close_bdev_excl(bdev);
273 * Try to write out the superblock using barriers.
279 xfs_buf_t *sbp = xfs_getsb(mp, 0);
284 XFS_BUF_UNDELAYWRITE(sbp);
286 XFS_BUF_UNASYNC(sbp);
287 XFS_BUF_ORDERED(sbp);
290 error = xfs_iowait(sbp);
293 * Clear all the flags we set and possible error state in the
294 * buffer. We only did the write to try out whether barriers
295 * worked and shouldn't leave any traces in the superblock
299 XFS_BUF_ERROR(sbp, 0);
300 XFS_BUF_UNORDERED(sbp);
307 xfs_mountfs_check_barriers(xfs_mount_t *mp)
311 if (mp->m_logdev_targp != mp->m_ddev_targp) {
312 xfs_fs_cmn_err(CE_NOTE, mp,
313 "Disabling barriers, not supported with external log device");
314 mp->m_flags &= ~XFS_MOUNT_BARRIER;
318 if (mp->m_ddev_targp->bt_bdev->bd_disk->queue->ordered ==
319 QUEUE_ORDERED_NONE) {
320 xfs_fs_cmn_err(CE_NOTE, mp,
321 "Disabling barriers, not supported by the underlying device");
322 mp->m_flags &= ~XFS_MOUNT_BARRIER;
326 if (xfs_readonly_buftarg(mp->m_ddev_targp)) {
327 xfs_fs_cmn_err(CE_NOTE, mp,
328 "Disabling barriers, underlying device is readonly");
329 mp->m_flags &= ~XFS_MOUNT_BARRIER;
333 error = xfs_barrier_test(mp);
335 xfs_fs_cmn_err(CE_NOTE, mp,
336 "Disabling barriers, trial barrier write failed");
337 mp->m_flags &= ~XFS_MOUNT_BARRIER;
343 xfs_blkdev_issue_flush(
344 xfs_buftarg_t *buftarg)
346 blkdev_issue_flush(buftarg->bt_bdev, NULL);
349 STATIC struct inode *
351 struct super_block *sb)
355 vp = kmem_zone_alloc(xfs_vnode_zone, KM_SLEEP);
358 return vn_to_inode(vp);
362 xfs_fs_destroy_inode(
365 kmem_zone_free(xfs_vnode_zone, vn_from_inode(inode));
369 xfs_fs_inode_init_once(
374 if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
375 SLAB_CTOR_CONSTRUCTOR)
376 inode_init_once(vn_to_inode((bhv_vnode_t *)vnode));
382 xfs_vnode_zone = kmem_zone_init_flags(sizeof(bhv_vnode_t), "xfs_vnode",
383 KM_ZONE_HWALIGN | KM_ZONE_RECLAIM |
385 xfs_fs_inode_init_once);
389 xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend");
391 goto out_destroy_vnode_zone;
393 xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE,
396 goto out_free_ioend_zone;
400 kmem_zone_destroy(xfs_ioend_zone);
401 out_destroy_vnode_zone:
402 kmem_zone_destroy(xfs_vnode_zone);
408 xfs_destroy_zones(void)
410 mempool_destroy(xfs_ioend_pool);
411 kmem_zone_destroy(xfs_vnode_zone);
412 kmem_zone_destroy(xfs_ioend_zone);
416 * Attempt to flush the inode, this will actually fail
417 * if the inode is pinned, but we dirty the inode again
418 * at the point when it is unpinned after a log write,
419 * since this is when the inode itself becomes flushable.
426 bhv_vnode_t *vp = vn_from_inode(inode);
427 int error = 0, flags = FLUSH_INODE;
430 vn_trace_entry(vp, __FUNCTION__, (inst_t *)__return_address);
433 error = bhv_vop_iflush(vp, flags);
435 error = sync? bhv_vop_iflush(vp, flags | FLUSH_LOG) : 0;
444 bhv_vnode_t *vp = vn_from_inode(inode);
446 vn_trace_entry(vp, __FUNCTION__, (inst_t *)__return_address);
448 XFS_STATS_INC(vn_rele);
449 XFS_STATS_INC(vn_remove);
450 XFS_STATS_INC(vn_reclaim);
451 XFS_STATS_DEC(vn_active);
454 * This can happen because xfs_iget_core calls xfs_idestroy if we
455 * find an inode with di_mode == 0 but without IGET_CREATE set.
458 bhv_vop_inactive(vp, NULL);
461 vp->v_flag &= ~VMODIFIED;
465 if (bhv_vop_reclaim(vp))
466 panic("%s: cannot reclaim 0x%p\n", __FUNCTION__, vp);
468 ASSERT(VNHEAD(vp) == NULL);
470 #ifdef XFS_VNODE_TRACE
471 ktrace_free(vp->v_trace);
476 * Enqueue a work item to be picked up by the vfs xfssyncd thread.
477 * Doing this has two advantages:
478 * - It saves on stack space, which is tight in certain situations
479 * - It can be used (with care) as a mechanism to avoid deadlocks.
480 * Flushing while allocating in a full filesystem requires both.
483 xfs_syncd_queue_work(
486 void (*syncer)(bhv_vfs_t *, void *))
488 struct bhv_vfs_sync_work *work;
490 work = kmem_alloc(sizeof(struct bhv_vfs_sync_work), KM_SLEEP);
491 INIT_LIST_HEAD(&work->w_list);
492 work->w_syncer = syncer;
495 spin_lock(&vfs->vfs_sync_lock);
496 list_add_tail(&work->w_list, &vfs->vfs_sync_list);
497 spin_unlock(&vfs->vfs_sync_lock);
498 wake_up_process(vfs->vfs_sync_task);
502 * Flush delayed allocate data, attempting to free up reserved space
503 * from existing allocations. At this point a new allocation attempt
504 * has failed with ENOSPC and we are in the process of scratching our
505 * heads, looking about for more room...
508 xfs_flush_inode_work(
512 filemap_flush(((struct inode *)inode)->i_mapping);
513 iput((struct inode *)inode);
520 struct inode *inode = vn_to_inode(XFS_ITOV(ip));
521 struct bhv_vfs *vfs = XFS_MTOVFS(ip->i_mount);
524 xfs_syncd_queue_work(vfs, inode, xfs_flush_inode_work);
525 delay(msecs_to_jiffies(500));
529 * This is the "bigger hammer" version of xfs_flush_inode_work...
530 * (IOW, "If at first you don't succeed, use a Bigger Hammer").
533 xfs_flush_device_work(
537 sync_blockdev(vfs->vfs_super->s_bdev);
538 iput((struct inode *)inode);
545 struct inode *inode = vn_to_inode(XFS_ITOV(ip));
546 struct bhv_vfs *vfs = XFS_MTOVFS(ip->i_mount);
549 xfs_syncd_queue_work(vfs, inode, xfs_flush_device_work);
550 delay(msecs_to_jiffies(500));
551 xfs_log_force(ip->i_mount, (xfs_lsn_t)0, XFS_LOG_FORCE|XFS_LOG_SYNC);
561 if (!(vfsp->vfs_flag & VFS_RDONLY))
562 error = bhv_vfs_sync(vfsp, SYNC_FSDATA | SYNC_BDFLUSH | \
563 SYNC_ATTR | SYNC_REFCACHE, NULL);
564 vfsp->vfs_sync_seq++;
566 wake_up(&vfsp->vfs_wait_single_sync_task);
574 bhv_vfs_t *vfsp = (bhv_vfs_t *) arg;
575 bhv_vfs_sync_work_t *work, *n;
578 timeleft = xfs_syncd_centisecs * msecs_to_jiffies(10);
580 timeleft = schedule_timeout_interruptible(timeleft);
583 if (kthread_should_stop() && list_empty(&vfsp->vfs_sync_list))
586 spin_lock(&vfsp->vfs_sync_lock);
588 * We can get woken by laptop mode, to do a sync -
589 * that's the (only!) case where the list would be
590 * empty with time remaining.
592 if (!timeleft || list_empty(&vfsp->vfs_sync_list)) {
594 timeleft = xfs_syncd_centisecs *
595 msecs_to_jiffies(10);
596 INIT_LIST_HEAD(&vfsp->vfs_sync_work.w_list);
597 list_add_tail(&vfsp->vfs_sync_work.w_list,
598 &vfsp->vfs_sync_list);
600 list_for_each_entry_safe(work, n, &vfsp->vfs_sync_list, w_list)
601 list_move(&work->w_list, &tmp);
602 spin_unlock(&vfsp->vfs_sync_lock);
604 list_for_each_entry_safe(work, n, &tmp, w_list) {
605 (*work->w_syncer)(vfsp, work->w_data);
606 list_del(&work->w_list);
607 if (work == &vfsp->vfs_sync_work)
609 kmem_free(work, sizeof(struct bhv_vfs_sync_work));
620 vfsp->vfs_sync_work.w_syncer = vfs_sync_worker;
621 vfsp->vfs_sync_work.w_vfs = vfsp;
622 vfsp->vfs_sync_task = kthread_run(xfssyncd, vfsp, "xfssyncd");
623 if (IS_ERR(vfsp->vfs_sync_task))
624 return -PTR_ERR(vfsp->vfs_sync_task);
632 kthread_stop(vfsp->vfs_sync_task);
637 struct super_block *sb)
639 bhv_vfs_t *vfsp = vfs_from_sb(sb);
642 xfs_fs_stop_syncd(vfsp);
643 bhv_vfs_sync(vfsp, SYNC_ATTR | SYNC_DELWRI, NULL);
644 error = bhv_vfs_unmount(vfsp, 0, NULL);
646 printk("XFS: unmount got error=%d\n", error);
647 printk("%s: vfs=0x%p left dangling!\n", __FUNCTION__, vfsp);
649 vfs_deallocate(vfsp);
655 struct super_block *sb)
657 if (!(sb->s_flags & MS_RDONLY))
658 bhv_vfs_sync(vfs_from_sb(sb), SYNC_FSDATA, NULL);
664 struct super_block *sb,
667 bhv_vfs_t *vfsp = vfs_from_sb(sb);
671 if (unlikely(sb->s_frozen == SB_FREEZE_WRITE))
672 flags = SYNC_QUIESCE;
674 flags = SYNC_FSDATA | (wait ? SYNC_WAIT : 0);
676 error = bhv_vfs_sync(vfsp, flags, NULL);
679 if (unlikely(laptop_mode)) {
680 int prev_sync_seq = vfsp->vfs_sync_seq;
683 * The disk must be active because we're syncing.
684 * We schedule xfssyncd now (now that the disk is
685 * active) instead of later (when it might not be).
687 wake_up_process(vfsp->vfs_sync_task);
689 * We have to wait for the sync iteration to complete.
690 * If we don't, the disk activity caused by the sync
691 * will come after the sync is completed, and that
692 * triggers another sync from laptop mode.
694 wait_event(vfsp->vfs_wait_single_sync_task,
695 vfsp->vfs_sync_seq != prev_sync_seq);
703 struct dentry *dentry,
704 struct kstatfs *statp)
706 return -bhv_vfs_statvfs(vfs_from_sb(dentry->d_sb), statp,
707 vn_from_inode(dentry->d_inode));
712 struct super_block *sb,
716 bhv_vfs_t *vfsp = vfs_from_sb(sb);
717 struct xfs_mount_args *args = xfs_args_allocate(sb, 0);
720 error = bhv_vfs_parseargs(vfsp, options, args, 1);
721 if ((args->flags2 & XFSMNT2_TAGGED) &&
722 !(sb->s_flags & MS_TAGGED)) {
723 printk("XFS: %s: tagging not permitted on remount.\n",
728 error = bhv_vfs_mntupdate(vfsp, flags, args);
729 kmem_free(args, sizeof(*args));
735 struct super_block *sb)
737 bhv_vfs_freeze(vfs_from_sb(sb));
743 struct vfsmount *mnt)
745 return -bhv_vfs_showargs(vfs_from_sb(mnt->mnt_sb), m);
750 struct super_block *sb,
753 return -bhv_vfs_quotactl(vfs_from_sb(sb), Q_XQUOTASYNC, 0, NULL);
758 struct super_block *sb,
759 struct fs_quota_stat *fqs)
761 return -bhv_vfs_quotactl(vfs_from_sb(sb), Q_XGETQSTAT, 0, (caddr_t)fqs);
766 struct super_block *sb,
770 return -bhv_vfs_quotactl(vfs_from_sb(sb), op, 0, (caddr_t)&flags);
775 struct super_block *sb,
778 struct fs_disk_quota *fdq)
780 return -bhv_vfs_quotactl(vfs_from_sb(sb),
781 (type == USRQUOTA) ? Q_XGETQUOTA :
782 ((type == GRPQUOTA) ? Q_XGETGQUOTA :
783 Q_XGETPQUOTA), id, (caddr_t)fdq);
788 struct super_block *sb,
791 struct fs_disk_quota *fdq)
793 return -bhv_vfs_quotactl(vfs_from_sb(sb),
794 (type == USRQUOTA) ? Q_XSETQLIM :
795 ((type == GRPQUOTA) ? Q_XSETGQLIM :
796 Q_XSETPQLIM), id, (caddr_t)fdq);
801 struct super_block *sb,
805 struct bhv_vnode *rootvp;
806 struct bhv_vfs *vfsp = vfs_allocate(sb);
807 struct xfs_mount_args *args = xfs_args_allocate(sb, silent);
808 struct kstatfs statvfs;
811 bhv_insert_all_vfsops(vfsp);
813 error = bhv_vfs_parseargs(vfsp, (char *)data, args, 0);
815 bhv_remove_all_vfsops(vfsp, 1);
819 sb_min_blocksize(sb, BBSIZE);
820 sb->s_export_op = &xfs_export_operations;
821 sb->s_qcop = &xfs_quotactl_operations;
822 sb->s_op = &xfs_super_operations;
824 error = bhv_vfs_mount(vfsp, args, NULL);
826 bhv_remove_all_vfsops(vfsp, 1);
830 error = bhv_vfs_statvfs(vfsp, &statvfs, NULL);
835 sb->s_magic = statvfs.f_type;
836 sb->s_blocksize = statvfs.f_bsize;
837 sb->s_blocksize_bits = ffs(statvfs.f_bsize) - 1;
838 sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits);
840 set_posix_acl_flag(sb);
842 error = bhv_vfs_root(vfsp, &rootvp);
846 sb->s_root = d_alloc_root(vn_to_inode(rootvp));
851 if (is_bad_inode(sb->s_root->d_inode)) {
855 if ((error = xfs_fs_start_syncd(vfsp)))
857 vn_trace_exit(rootvp, __FUNCTION__, (inst_t *)__return_address);
859 kmem_free(args, sizeof(*args));
871 bhv_vfs_unmount(vfsp, 0, NULL);
874 vfs_deallocate(vfsp);
875 kmem_free(args, sizeof(*args));
881 struct file_system_type *fs_type,
883 const char *dev_name,
885 struct vfsmount *mnt)
887 return get_sb_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super,
891 STATIC struct super_operations xfs_super_operations = {
892 .alloc_inode = xfs_fs_alloc_inode,
893 .destroy_inode = xfs_fs_destroy_inode,
894 .write_inode = xfs_fs_write_inode,
895 .clear_inode = xfs_fs_clear_inode,
896 .put_super = xfs_fs_put_super,
897 .write_super = xfs_fs_write_super,
898 .sync_fs = xfs_fs_sync_super,
899 .write_super_lockfs = xfs_fs_lockfs,
900 .statfs = xfs_fs_statfs,
901 .remount_fs = xfs_fs_remount,
902 .show_options = xfs_fs_show_options,
905 STATIC struct quotactl_ops xfs_quotactl_operations = {
906 .quota_sync = xfs_fs_quotasync,
907 .get_xstate = xfs_fs_getxstate,
908 .set_xstate = xfs_fs_setxstate,
909 .get_xquota = xfs_fs_getxquota,
910 .set_xquota = xfs_fs_setxquota,
913 STATIC struct file_system_type xfs_fs_type = {
914 .owner = THIS_MODULE,
916 .get_sb = xfs_fs_get_sb,
917 .kill_sb = kill_block_super,
918 .fs_flags = FS_REQUIRES_DEV,
927 static char message[] __initdata = KERN_INFO \
928 XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled\n";
933 xfs_physmem = si.totalram;
937 error = xfs_init_zones();
941 error = xfs_buf_init();
950 error = register_filesystem(&xfs_fs_type);
969 unregister_filesystem(&xfs_fs_type);
976 module_init(init_xfs_fs);
977 module_exit(exit_xfs_fs);
979 MODULE_AUTHOR("Silicon Graphics, Inc.");
980 MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled");
981 MODULE_LICENSE("GPL");