Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff
[linux-2.6.git] / fs / xfs / linux-2.6 / xfs_super.c
index 674bf43..4a79c7f 100644 (file)
@@ -1,60 +1,45 @@
 /*
- * Copyright (c) 2000-2005 Silicon Graphics, Inc.  All Rights Reserved.
+ * Copyright (c) 2000-2005 Silicon Graphics, Inc.
+ * All Rights Reserved.
  *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
  * published by the Free Software Foundation.
  *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * This program is distributed in the hope that it would be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like.  Any license provided herein, whether implied or
- * otherwise, applies only to this software file.  Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA  94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write the Free Software Foundation,
+ * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */
-
 #include "xfs.h"
-
-#include "xfs_inum.h"
+#include "xfs_bit.h"
 #include "xfs_log.h"
 #include "xfs_clnt.h"
+#include "xfs_inum.h"
 #include "xfs_trans.h"
 #include "xfs_sb.h"
+#include "xfs_ag.h"
 #include "xfs_dir.h"
 #include "xfs_dir2.h"
 #include "xfs_alloc.h"
 #include "xfs_dmapi.h"
 #include "xfs_quota.h"
 #include "xfs_mount.h"
-#include "xfs_alloc_btree.h"
 #include "xfs_bmap_btree.h"
+#include "xfs_alloc_btree.h"
 #include "xfs_ialloc_btree.h"
-#include "xfs_btree.h"
-#include "xfs_ialloc.h"
-#include "xfs_attr_sf.h"
 #include "xfs_dir_sf.h"
 #include "xfs_dir2_sf.h"
+#include "xfs_attr_sf.h"
 #include "xfs_dinode.h"
 #include "xfs_inode.h"
+#include "xfs_btree.h"
+#include "xfs_ialloc.h"
 #include "xfs_bmap.h"
-#include "xfs_bit.h"
 #include "xfs_rtalloc.h"
 #include "xfs_error.h"
 #include "xfs_itable.h"
 #include <linux/namei.h>
 #include <linux/init.h>
 #include <linux/mount.h>
+#include <linux/mempool.h>
 #include <linux/writeback.h>
+#include <linux/kthread.h>
 
-STATIC struct quotactl_ops linvfs_qops;
-STATIC struct super_operations linvfs_sops;
-STATIC kmem_zone_t *linvfs_inode_zone;
+STATIC struct quotactl_ops xfs_quotactl_operations;
+STATIC struct super_operations xfs_super_operations;
+STATIC kmem_zone_t *xfs_vnode_zone;
+STATIC kmem_zone_t *xfs_ioend_zone;
+mempool_t *xfs_ioend_pool;
 
 STATIC struct xfs_mount_args *
 xfs_args_allocate(
-       struct super_block      *sb)
+       struct super_block      *sb,
+       int                     silent)
 {
        struct xfs_mount_args   *args;
 
@@ -87,14 +77,12 @@ xfs_args_allocate(
        strncpy(args->fsname, sb->s_id, MAXNAMELEN);
 
        /* Copy the already-parsed mount(2) flags we're interested in */
-       if (sb->s_flags & MS_NOATIME)
-               args->flags |= XFSMNT_NOATIME;
        if (sb->s_flags & MS_DIRSYNC)
                args->flags |= XFSMNT_DIRSYNC;
        if (sb->s_flags & MS_SYNCHRONOUS)
                args->flags |= XFSMNT_WSYNC;
-
-       /* Default to 32 bit inodes on Linux all the time */
+       if (silent)
+               args->flags |= XFSMNT_QUIET;
        args->flags |= XFSMNT_32BITINODES;
 
        return args;
@@ -138,24 +126,25 @@ STATIC __inline__ void
 xfs_set_inodeops(
        struct inode            *inode)
 {
-       vnode_t                 *vp = LINVFS_GET_VP(inode);
-
-       if (vp->v_type == VNON) {
-               vn_mark_bad(vp);
-       } else if (S_ISREG(inode->i_mode)) {
-               inode->i_op = &linvfs_file_inode_operations;
-               inode->i_fop = &linvfs_file_operations;
-               inode->i_mapping->a_ops = &linvfs_aops;
-       } else if (S_ISDIR(inode->i_mode)) {
-               inode->i_op = &linvfs_dir_inode_operations;
-               inode->i_fop = &linvfs_dir_operations;
-       } else if (S_ISLNK(inode->i_mode)) {
-               inode->i_op = &linvfs_symlink_inode_operations;
+       switch (inode->i_mode & S_IFMT) {
+       case S_IFREG:
+               inode->i_op = &xfs_inode_operations;
+               inode->i_fop = &xfs_file_operations;
+               inode->i_mapping->a_ops = &xfs_address_space_operations;
+               break;
+       case S_IFDIR:
+               inode->i_op = &xfs_dir_inode_operations;
+               inode->i_fop = &xfs_dir_file_operations;
+               break;
+       case S_IFLNK:
+               inode->i_op = &xfs_symlink_inode_operations;
                if (inode->i_blocks)
-                       inode->i_mapping->a_ops = &linvfs_aops;
-       } else {
-               inode->i_op = &linvfs_file_inode_operations;
+                       inode->i_mapping->a_ops = &xfs_address_space_operations;
+               break;
+       default:
+               inode->i_op = &xfs_inode_operations;
                init_special_inode(inode, inode->i_mode, inode->i_rdev);
+               break;
        }
 }
 
@@ -165,20 +154,27 @@ xfs_revalidate_inode(
        vnode_t                 *vp,
        xfs_inode_t             *ip)
 {
-       struct inode            *inode = LINVFS_GET_IP(vp);
+       struct inode            *inode = vn_to_inode(vp);
 
-       inode->i_mode   = (ip->i_d.di_mode & MODEMASK) | VTTOIF(vp->v_type);
+       inode->i_mode   = ip->i_d.di_mode;
        inode->i_nlink  = ip->i_d.di_nlink;
        inode->i_uid    = ip->i_d.di_uid;
        inode->i_gid    = ip->i_d.di_gid;
        inode->i_xid    = ip->i_d.di_xid;
-       if (((1 << vp->v_type) & ((1<<VBLK) | (1<<VCHR))) == 0) {
+
+       switch (inode->i_mode & S_IFMT) {
+       case S_IFBLK:
+       case S_IFCHR:
+               inode->i_rdev =
+                       MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff,
+                             sysv_minor(ip->i_df.if_u2.if_rdev));
+               break;
+       default:
                inode->i_rdev = 0;
-       } else {
-               xfs_dev_t dev = ip->i_df.if_u2.if_rdev;
-               inode->i_rdev = MKDEV(sysv_major(dev) & 0x1ff, sysv_minor(dev));
+               break;
        }
-       inode->i_blksize = PAGE_CACHE_SIZE;
+
+       inode->i_blksize = xfs_preferred_iosize(mp);
        inode->i_generation = ip->i_d.di_gen;
        i_size_write(inode, ip->i_d.di_size);
        inode->i_blocks =
@@ -224,7 +220,7 @@ xfs_initialize_vnode(
        int                     unlock)
 {
        xfs_inode_t             *ip = XFS_BHVTOI(inode_bhv);
-       struct inode            *inode = LINVFS_GET_IP(vp);
+       struct inode            *inode = vn_to_inode(vp);
 
        if (!inode_bhv->bd_vobj) {
                vp->v_vfsp = bhvtovfs(bdp);
@@ -240,10 +236,9 @@ xfs_initialize_vnode(
         * finish our work.
         */
        if (ip->i_d.di_mode != 0 && unlock && (inode->i_state & I_NEW)) {
-               vp->v_type = IFTOVT(ip->i_d.di_mode);
                xfs_revalidate_inode(XFS_BHVTOM(bdp), vp, ip);
                xfs_set_inodeops(inode);
-       
+
                ip->i_flags &= ~XFS_INEW;
                barrier();
 
@@ -276,70 +271,154 @@ xfs_blkdev_put(
                close_bdev_excl(bdev);
 }
 
+/*
+ * Try to write out the superblock using barriers.
+ */
+STATIC int
+xfs_barrier_test(
+       xfs_mount_t     *mp)
+{
+       xfs_buf_t       *sbp = xfs_getsb(mp, 0);
+       int             error;
+
+       XFS_BUF_UNDONE(sbp);
+       XFS_BUF_UNREAD(sbp);
+       XFS_BUF_UNDELAYWRITE(sbp);
+       XFS_BUF_WRITE(sbp);
+       XFS_BUF_UNASYNC(sbp);
+       XFS_BUF_ORDERED(sbp);
+
+       xfsbdstrat(mp, sbp);
+       error = xfs_iowait(sbp);
+
+       /*
+        * Clear all the flags we set and possible error state in the
+        * buffer.  We only did the write to try out whether barriers
+        * worked and shouldn't leave any traces in the superblock
+        * buffer.
+        */
+       XFS_BUF_DONE(sbp);
+       XFS_BUF_ERROR(sbp, 0);
+       XFS_BUF_UNORDERED(sbp);
+
+       xfs_buf_relse(sbp);
+       return error;
+}
+
+void
+xfs_mountfs_check_barriers(xfs_mount_t *mp)
+{
+       int error;
+
+       if (mp->m_logdev_targp != mp->m_ddev_targp) {
+               xfs_fs_cmn_err(CE_NOTE, mp,
+                 "Disabling barriers, not supported with external log device");
+               mp->m_flags &= ~XFS_MOUNT_BARRIER;
+               return;
+       }
+
+       if (mp->m_ddev_targp->bt_bdev->bd_disk->queue->ordered ==
+                                       QUEUE_ORDERED_NONE) {
+               xfs_fs_cmn_err(CE_NOTE, mp,
+                 "Disabling barriers, not supported by the underlying device");
+               mp->m_flags &= ~XFS_MOUNT_BARRIER;
+               return;
+       }
+
+       error = xfs_barrier_test(mp);
+       if (error) {
+               xfs_fs_cmn_err(CE_NOTE, mp,
+                 "Disabling barriers, trial barrier write failed");
+               mp->m_flags &= ~XFS_MOUNT_BARRIER;
+               return;
+       }
+}
+
+void
+xfs_blkdev_issue_flush(
+       xfs_buftarg_t           *buftarg)
+{
+       blkdev_issue_flush(buftarg->bt_bdev, NULL);
+}
 
 STATIC struct inode *
-linvfs_alloc_inode(
+xfs_fs_alloc_inode(
        struct super_block      *sb)
 {
        vnode_t                 *vp;
 
-       vp = (vnode_t *)kmem_cache_alloc(linvfs_inode_zone, 
-                kmem_flags_convert(KM_SLEEP));
-       if (!vp)
+       vp = kmem_zone_alloc(xfs_vnode_zone, KM_SLEEP);
+       if (unlikely(!vp))
                return NULL;
-       return LINVFS_GET_IP(vp);
+       return vn_to_inode(vp);
 }
 
 STATIC void
-linvfs_destroy_inode(
+xfs_fs_destroy_inode(
        struct inode            *inode)
 {
-       kmem_cache_free(linvfs_inode_zone, LINVFS_GET_VP(inode));
+       kmem_zone_free(xfs_vnode_zone, vn_from_inode(inode));
 }
 
 STATIC void
-init_once(
-       void                    *data,
-       kmem_cache_t            *cachep,
+xfs_fs_inode_init_once(
+       void                    *vnode,
+       kmem_zone_t             *zonep,
        unsigned long           flags)
 {
-       vnode_t                 *vp = (vnode_t *)data;
-
        if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
-           SLAB_CTOR_CONSTRUCTOR)
-               inode_init_once(LINVFS_GET_IP(vp));
+                     SLAB_CTOR_CONSTRUCTOR)
+               inode_init_once(vn_to_inode((vnode_t *)vnode));
 }
 
 STATIC int
-init_inodecache( void )
-{
-       linvfs_inode_zone = kmem_cache_create("linvfs_icache",
-                               sizeof(vnode_t), 0, SLAB_RECLAIM_ACCOUNT,
-                               init_once, NULL);
-       if (linvfs_inode_zone == NULL)
-               return -ENOMEM;
+xfs_init_zones(void)
+{
+       xfs_vnode_zone = kmem_zone_init_flags(sizeof(vnode_t), "xfs_vnode_t",
+                                       KM_ZONE_HWALIGN | KM_ZONE_RECLAIM |
+                                       KM_ZONE_SPREAD,
+                                       xfs_fs_inode_init_once);
+       if (!xfs_vnode_zone)
+               goto out;
+
+       xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend");
+       if (!xfs_ioend_zone)
+               goto out_destroy_vnode_zone;
+
+       xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE,
+                                                 xfs_ioend_zone);
+       if (!xfs_ioend_pool)
+               goto out_free_ioend_zone;
        return 0;
+
+ out_free_ioend_zone:
+       kmem_zone_destroy(xfs_ioend_zone);
+ out_destroy_vnode_zone:
+       kmem_zone_destroy(xfs_vnode_zone);
+ out:
+       return -ENOMEM;
 }
 
 STATIC void
-destroy_inodecache( void )
+xfs_destroy_zones(void)
 {
-       if (kmem_cache_destroy(linvfs_inode_zone))
-               printk(KERN_WARNING "%s: cache still in use!\n", __FUNCTION__);
+       mempool_destroy(xfs_ioend_pool);
+       kmem_zone_destroy(xfs_vnode_zone);
+       kmem_zone_destroy(xfs_ioend_zone);
 }
 
 /*
  * Attempt to flush the inode, this will actually fail
  * if the inode is pinned, but we dirty the inode again
  * at the point when it is unpinned after a log write,
- * since this is when the inode itself becomes flushable. 
+ * since this is when the inode itself becomes flushable.
  */
 STATIC int
-linvfs_write_inode(
+xfs_fs_write_inode(
        struct inode            *inode,
        int                     sync)
 {
-       vnode_t                 *vp = LINVFS_GET_VP(inode);
+       vnode_t                 *vp = vn_from_inode(inode);
        int                     error = 0, flags = FLUSH_INODE;
 
        if (vp) {
@@ -359,21 +438,42 @@ linvfs_write_inode(
 }
 
 STATIC void
-linvfs_clear_inode(
+xfs_fs_clear_inode(
        struct inode            *inode)
 {
-       vnode_t                 *vp = LINVFS_GET_VP(inode);
+       vnode_t                 *vp = vn_from_inode(inode);
+       int                     error, cache;
 
-       if (vp) {
-               vn_rele(vp);
-               vn_trace_entry(vp, __FUNCTION__, (inst_t *)__return_address);
-               /*
-                * Do all our cleanup, and remove this vnode.
-                */
-               vn_remove(vp);
+       vn_trace_entry(vp, __FUNCTION__, (inst_t *)__return_address);
+
+       XFS_STATS_INC(vn_rele);
+       XFS_STATS_INC(vn_remove);
+       XFS_STATS_INC(vn_reclaim);
+       XFS_STATS_DEC(vn_active);
+
+       /*
+        * This can happen because xfs_iget_core calls xfs_idestroy if we
+        * find an inode with di_mode == 0 but without IGET_CREATE set.
+        */
+       if (vp->v_fbhv)
+               VOP_INACTIVE(vp, NULL, cache);
+
+       VN_LOCK(vp);
+       vp->v_flag &= ~VMODIFIED;
+       VN_UNLOCK(vp, 0);
+
+       if (vp->v_fbhv) {
+               VOP_RECLAIM(vp, error);
+               if (error)
+                       panic("vn_purge: cannot reclaim");
        }
-}
 
+       ASSERT(vp->v_fbhv == NULL);
+
+#ifdef XFS_VNODE_TRACE
+       ktrace_free(vp->v_trace);
+#endif
+}
 
 /*
  * Enqueue a work item to be picked up by the vfs xfssyncd thread.
@@ -420,12 +520,12 @@ void
 xfs_flush_inode(
        xfs_inode_t     *ip)
 {
-       struct inode    *inode = LINVFS_GET_IP(XFS_ITOV(ip));
+       struct inode    *inode = vn_to_inode(XFS_ITOV(ip));
        struct vfs      *vfs = XFS_MTOVFS(ip->i_mount);
 
        igrab(inode);
        xfs_syncd_queue_work(vfs, inode, xfs_flush_inode_work);
-       delay(HZ/2);
+       delay(msecs_to_jiffies(500));
 }
 
 /*
@@ -445,16 +545,16 @@ void
 xfs_flush_device(
        xfs_inode_t     *ip)
 {
-       struct inode    *inode = LINVFS_GET_IP(XFS_ITOV(ip));
+       struct inode    *inode = vn_to_inode(XFS_ITOV(ip));
        struct vfs      *vfs = XFS_MTOVFS(ip->i_mount);
 
        igrab(inode);
        xfs_syncd_queue_work(vfs, inode, xfs_flush_device_work);
-       delay(HZ/2);
+       delay(msecs_to_jiffies(500));
        xfs_log_force(ip->i_mount, (xfs_lsn_t)0, XFS_LOG_FORCE|XFS_LOG_SYNC);
 }
 
-#define SYNCD_FLAGS    (SYNC_FSDATA|SYNC_BDFLUSH|SYNC_ATTR)
+#define SYNCD_FLAGS    (SYNC_FSDATA|SYNC_BDFLUSH|SYNC_ATTR|SYNC_REFCACHE)
 STATIC void
 vfs_sync_worker(
        vfs_t           *vfsp,
@@ -475,25 +575,15 @@ xfssyncd(
 {
        long                    timeleft;
        vfs_t                   *vfsp = (vfs_t *) arg;
-       struct list_head        tmp;
        struct vfs_sync_work    *work, *n;
+       LIST_HEAD               (tmp);
 
-       daemonize("xfssyncd");
-
-       vfsp->vfs_sync_work.w_vfs = vfsp;
-       vfsp->vfs_sync_work.w_syncer = vfs_sync_worker;
-       vfsp->vfs_sync_task = current;
-       wmb();
-       wake_up(&vfsp->vfs_wait_sync_task);
-
-       INIT_LIST_HEAD(&tmp);
-       timeleft = (xfs_syncd_centisecs * HZ) / 100;
+       timeleft = xfs_syncd_centisecs * msecs_to_jiffies(10);
        for (;;) {
-               set_current_state(TASK_INTERRUPTIBLE);
-               timeleft = schedule_timeout(timeleft);
+               timeleft = schedule_timeout_interruptible(timeleft);
                /* swsusp */
-               try_to_freeze(PF_FREEZE);
-               if (vfsp->vfs_flag & VFS_UMOUNT)
+               try_to_freeze();
+               if (kthread_should_stop() && list_empty(&vfsp->vfs_sync_list))
                        break;
 
                spin_lock(&vfsp->vfs_sync_lock);
@@ -504,7 +594,8 @@ xfssyncd(
                 */
                if (!timeleft || list_empty(&vfsp->vfs_sync_list)) {
                        if (!timeleft)
-                               timeleft = (xfs_syncd_centisecs * HZ) / 100;
+                               timeleft = xfs_syncd_centisecs *
+                                                       msecs_to_jiffies(10);
                        INIT_LIST_HEAD(&vfsp->vfs_sync_work.w_list);
                        list_add_tail(&vfsp->vfs_sync_work.w_list,
                                        &vfsp->vfs_sync_list);
@@ -522,46 +613,36 @@ xfssyncd(
                }
        }
 
-       vfsp->vfs_sync_task = NULL;
-       wmb();
-       wake_up(&vfsp->vfs_wait_sync_task);
-
        return 0;
 }
 
 STATIC int
-linvfs_start_syncd(
+xfs_fs_start_syncd(
        vfs_t                   *vfsp)
 {
-       int                     pid;
-
-       pid = kernel_thread(xfssyncd, (void *) vfsp,
-                       CLONE_VM | CLONE_FS | CLONE_FILES);
-       if (pid < 0)
-               return -pid;
-       wait_event(vfsp->vfs_wait_sync_task, vfsp->vfs_sync_task);
+       vfsp->vfs_sync_work.w_syncer = vfs_sync_worker;
+       vfsp->vfs_sync_work.w_vfs = vfsp;
+       vfsp->vfs_sync_task = kthread_run(xfssyncd, vfsp, "xfssyncd");
+       if (IS_ERR(vfsp->vfs_sync_task))
+               return -PTR_ERR(vfsp->vfs_sync_task);
        return 0;
 }
 
 STATIC void
-linvfs_stop_syncd(
+xfs_fs_stop_syncd(
        vfs_t                   *vfsp)
 {
-       vfsp->vfs_flag |= VFS_UMOUNT;
-       wmb();
-
-       wake_up_process(vfsp->vfs_sync_task);
-       wait_event(vfsp->vfs_wait_sync_task, !vfsp->vfs_sync_task);
+       kthread_stop(vfsp->vfs_sync_task);
 }
 
 STATIC void
-linvfs_put_super(
+xfs_fs_put_super(
        struct super_block      *sb)
 {
-       vfs_t                   *vfsp = LINVFS_GET_VFS(sb);
+       vfs_t                   *vfsp = vfs_from_sb(sb);
        int                     error;
 
-       linvfs_stop_syncd(vfsp);
+       xfs_fs_stop_syncd(vfsp);
        VFS_SYNC(vfsp, SYNC_ATTR|SYNC_DELWRI, NULL, error);
        if (!error)
                VFS_UNMOUNT(vfsp, 0, NULL, error);
@@ -575,10 +656,10 @@ linvfs_put_super(
 }
 
 STATIC void
-linvfs_write_super(
+xfs_fs_write_super(
        struct super_block      *sb)
 {
-       vfs_t                   *vfsp = LINVFS_GET_VFS(sb);
+       vfs_t                   *vfsp = vfs_from_sb(sb);
        int                     error;
 
        if (sb->s_flags & MS_RDONLY) {
@@ -591,16 +672,18 @@ linvfs_write_super(
 }
 
 STATIC int
-linvfs_sync_super(
+xfs_fs_sync_super(
        struct super_block      *sb,
        int                     wait)
 {
-       vfs_t           *vfsp = LINVFS_GET_VFS(sb);
+       vfs_t           *vfsp = vfs_from_sb(sb);
        int             error;
        int             flags = SYNC_FSDATA;
 
-       if (wait)
-               flags |= SYNC_WAIT;
+       if (unlikely(sb->s_frozen == SB_FREEZE_WRITE))
+               flags = SYNC_QUIESCE;
+       else
+               flags = SYNC_FSDATA | (wait ? SYNC_WAIT : 0);
 
        VFS_SYNC(vfsp, flags, NULL, error);
        sb->s_dirt = 0;
@@ -628,11 +711,11 @@ linvfs_sync_super(
 }
 
 STATIC int
-linvfs_statfs(
+xfs_fs_statfs(
        struct super_block      *sb,
        struct kstatfs          *statp)
 {
-       vfs_t                   *vfsp = LINVFS_GET_VFS(sb);
+       vfs_t                   *vfsp = vfs_from_sb(sb);
        int                     error;
 
        VFS_STATVFS(vfsp, statp, NULL, error);
@@ -640,16 +723,22 @@ linvfs_statfs(
 }
 
 STATIC int
-linvfs_remount(
+xfs_fs_remount(
        struct super_block      *sb,
        int                     *flags,
        char                    *options)
 {
-       vfs_t                   *vfsp = LINVFS_GET_VFS(sb);
-       struct xfs_mount_args   *args = xfs_args_allocate(sb);
+       vfs_t                   *vfsp = vfs_from_sb(sb);
+       struct xfs_mount_args   *args = xfs_args_allocate(sb, 0);
        int                     error;
 
        VFS_PARSEARGS(vfsp, options, args, 1, error);
+       if ((args->flags2 & XFSMNT2_TAGXID) &&
+               !(sb->s_flags & MS_TAGXID)) {
+               printk("XFS: %s: tagxid not permitted on remount.\n",
+                       sb->s_id);
+               error = EINVAL;
+       }
        if (!error)
                VFS_MNTUPDATE(vfsp, flags, args, error);
        kmem_free(args, sizeof(*args));
@@ -657,18 +746,18 @@ linvfs_remount(
 }
 
 STATIC void
-linvfs_freeze_fs(
+xfs_fs_lockfs(
        struct super_block      *sb)
 {
-       VFS_FREEZE(LINVFS_GET_VFS(sb));
+       VFS_FREEZE(vfs_from_sb(sb));
 }
 
 STATIC int
-linvfs_show_options(
+xfs_fs_show_options(
        struct seq_file         *m,
        struct vfsmount         *mnt)
 {
-       struct vfs              *vfsp = LINVFS_GET_VFS(mnt->mnt_sb);
+       struct vfs              *vfsp = vfs_from_sb(mnt->mnt_sb);
        int                     error;
 
        VFS_SHOWARGS(vfsp, m, error);
@@ -676,11 +765,23 @@ linvfs_show_options(
 }
 
 STATIC int
-linvfs_getxstate(
+xfs_fs_quotasync(
+       struct super_block      *sb,
+       int                     type)
+{
+       struct vfs              *vfsp = vfs_from_sb(sb);
+       int                     error;
+
+       VFS_QUOTACTL(vfsp, Q_XQUOTASYNC, 0, (caddr_t)NULL, error);
+       return -error;
+}
+
+STATIC int
+xfs_fs_getxstate(
        struct super_block      *sb,
        struct fs_quota_stat    *fqs)
 {
-       struct vfs              *vfsp = LINVFS_GET_VFS(sb);
+       struct vfs              *vfsp = vfs_from_sb(sb);
        int                     error;
 
        VFS_QUOTACTL(vfsp, Q_XGETQSTAT, 0, (caddr_t)fqs, error);
@@ -688,12 +789,12 @@ linvfs_getxstate(
 }
 
 STATIC int
-linvfs_setxstate(
+xfs_fs_setxstate(
        struct super_block      *sb,
        unsigned int            flags,
        int                     op)
 {
-       struct vfs              *vfsp = LINVFS_GET_VFS(sb);
+       struct vfs              *vfsp = vfs_from_sb(sb);
        int                     error;
 
        VFS_QUOTACTL(vfsp, op, 0, (caddr_t)&flags, error);
@@ -701,51 +802,49 @@ linvfs_setxstate(
 }
 
 STATIC int
-linvfs_getxquota(
+xfs_fs_getxquota(
        struct super_block      *sb,
        int                     type,
        qid_t                   id,
        struct fs_disk_quota    *fdq)
 {
-       struct vfs              *vfsp = LINVFS_GET_VFS(sb);
+       struct vfs              *vfsp = vfs_from_sb(sb);
        int                     error, getmode;
 
-       getmode = (type == GRPQUOTA) ? Q_XGETGQUOTA : Q_XGETQUOTA;
+       getmode = (type == USRQUOTA) ? Q_XGETQUOTA :
+                ((type == GRPQUOTA) ? Q_XGETGQUOTA : Q_XGETPQUOTA);
        VFS_QUOTACTL(vfsp, getmode, id, (caddr_t)fdq, error);
        return -error;
 }
 
 STATIC int
-linvfs_setxquota(
+xfs_fs_setxquota(
        struct super_block      *sb,
        int                     type,
        qid_t                   id,
        struct fs_disk_quota    *fdq)
 {
-       struct vfs              *vfsp = LINVFS_GET_VFS(sb);
+       struct vfs              *vfsp = vfs_from_sb(sb);
        int                     error, setmode;
 
-       setmode = (type == GRPQUOTA) ? Q_XSETGQLIM : Q_XSETQLIM;
+       setmode = (type == USRQUOTA) ? Q_XSETQLIM :
+                ((type == GRPQUOTA) ? Q_XSETGQLIM : Q_XSETPQLIM);
        VFS_QUOTACTL(vfsp, setmode, id, (caddr_t)fdq, error);
        return -error;
 }
 
 STATIC int
-linvfs_fill_super(
+xfs_fs_fill_super(
        struct super_block      *sb,
        void                    *data,
        int                     silent)
 {
        vnode_t                 *rootvp;
-       struct vfs              *vfsp = vfs_allocate();
-       struct xfs_mount_args   *args = xfs_args_allocate(sb);
+       struct vfs              *vfsp = vfs_allocate(sb);
+       struct xfs_mount_args   *args = xfs_args_allocate(sb, silent);
        struct kstatfs          statvfs;
        int                     error, error2;
 
-       vfsp->vfs_super = sb;
-       LINVFS_SET_VFS(sb, vfsp);
-       if (sb->s_flags & MS_RDONLY)
-               vfsp->vfs_flag |= VFS_RDONLY;
        bhv_insert_all_vfsops(vfsp);
 
        VFS_PARSEARGS(vfsp, (char *)data, args, 0, error);
@@ -756,10 +855,10 @@ linvfs_fill_super(
 
        sb_min_blocksize(sb, BBSIZE);
 #ifdef CONFIG_XFS_EXPORT
-       sb->s_export_op = &linvfs_export_ops;
+       sb->s_export_op = &xfs_export_operations;
 #endif
-       sb->s_qcop = &linvfs_qops;
-       sb->s_op = &linvfs_sops;
+       sb->s_qcop = &xfs_quotactl_operations;
+       sb->s_op = &xfs_super_operations;
 
        VFS_MOUNT(vfsp, args, NULL, error);
        if (error) {
@@ -783,7 +882,7 @@ linvfs_fill_super(
        if (error)
                goto fail_unmount;
 
-       sb->s_root = d_alloc_root(LINVFS_GET_IP(rootvp));
+       sb->s_root = d_alloc_root(vn_to_inode(rootvp));
        if (!sb->s_root) {
                error = ENOMEM;
                goto fail_vnrele;
@@ -792,7 +891,7 @@ linvfs_fill_super(
                error = EINVAL;
                goto fail_vnrele;
        }
-       if ((error = linvfs_start_syncd(vfsp)))
+       if ((error = xfs_fs_start_syncd(vfsp)))
                goto fail_vnrele;
        vn_trace_exit(rootvp, __FUNCTION__, (inst_t *)__return_address);
 
@@ -817,40 +916,41 @@ fail_vfsop:
 }
 
 STATIC struct super_block *
-linvfs_get_sb(
+xfs_fs_get_sb(
        struct file_system_type *fs_type,
        int                     flags,
        const char              *dev_name,
        void                    *data)
 {
-       return get_sb_bdev(fs_type, flags, dev_name, data, linvfs_fill_super);
-}
-
-STATIC struct super_operations linvfs_sops = {
-       .alloc_inode            = linvfs_alloc_inode,
-       .destroy_inode          = linvfs_destroy_inode,
-       .write_inode            = linvfs_write_inode,
-       .clear_inode            = linvfs_clear_inode,
-       .put_super              = linvfs_put_super,
-       .write_super            = linvfs_write_super,
-       .sync_fs                = linvfs_sync_super,
-       .write_super_lockfs     = linvfs_freeze_fs,
-       .statfs                 = linvfs_statfs,
-       .remount_fs             = linvfs_remount,
-       .show_options           = linvfs_show_options,
+       return get_sb_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super);
+}
+
+STATIC struct super_operations xfs_super_operations = {
+       .alloc_inode            = xfs_fs_alloc_inode,
+       .destroy_inode          = xfs_fs_destroy_inode,
+       .write_inode            = xfs_fs_write_inode,
+       .clear_inode            = xfs_fs_clear_inode,
+       .put_super              = xfs_fs_put_super,
+       .write_super            = xfs_fs_write_super,
+       .sync_fs                = xfs_fs_sync_super,
+       .write_super_lockfs     = xfs_fs_lockfs,
+       .statfs                 = xfs_fs_statfs,
+       .remount_fs             = xfs_fs_remount,
+       .show_options           = xfs_fs_show_options,
 };
 
-STATIC struct quotactl_ops linvfs_qops = {
-       .get_xstate             = linvfs_getxstate,
-       .set_xstate             = linvfs_setxstate,
-       .get_xquota             = linvfs_getxquota,
-       .set_xquota             = linvfs_setxquota,
+STATIC struct quotactl_ops xfs_quotactl_operations = {
+       .quota_sync             = xfs_fs_quotasync,
+       .get_xstate             = xfs_fs_getxstate,
+       .set_xstate             = xfs_fs_setxstate,
+       .get_xquota             = xfs_fs_getxquota,
+       .set_xquota             = xfs_fs_setxquota,
 };
 
 STATIC struct file_system_type xfs_fs_type = {
        .owner                  = THIS_MODULE,
        .name                   = "xfs",
-       .get_sb                 = linvfs_get_sb,
+       .get_sb                 = xfs_fs_get_sb,
        .kill_sb                = kill_block_super,
        .fs_flags               = FS_REQUIRES_DEV,
 };
@@ -871,13 +971,13 @@ init_xfs_fs( void )
 
        ktrace_init(64);
 
-       error = init_inodecache();
+       error = xfs_init_zones();
        if (error < 0)
-               goto undo_inodecache;
+               goto undo_zones;
 
-       error = pagebuf_init();
+       error = xfs_buf_init();
        if (error < 0)
-               goto undo_pagebuf;
+               goto undo_buffers;
 
        vn_init();
        xfs_init();
@@ -887,16 +987,15 @@ init_xfs_fs( void )
        error = register_filesystem(&xfs_fs_type);
        if (error)
                goto undo_register;
-       XFS_DM_INIT(&xfs_fs_type);
        return 0;
 
 undo_register:
-       pagebuf_terminate();
+       xfs_buf_terminate();
 
-undo_pagebuf:
-       destroy_inodecache();
+undo_buffers:
+       xfs_destroy_zones();
 
-undo_inodecache:
+undo_zones:
        return error;
 }
 
@@ -904,11 +1003,10 @@ STATIC void __exit
 exit_xfs_fs( void )
 {
        vfs_exitquota();
-       XFS_DM_EXIT(&xfs_fs_type);
        unregister_filesystem(&xfs_fs_type);
        xfs_cleanup();
-       pagebuf_terminate();
-       destroy_inodecache();
+       xfs_buf_terminate();
+       xfs_destroy_zones();
        ktrace_uninit();
 }