[XFS] kill struct bhv_vfs

Now that struct bhv_vfs doesn't have any members left we can kill it and
go directly from the super_block to the xfs_mount everywhere.

SGI-PV: 969608
SGI-Modid: xfs-linux-melb:xfs-kern:29509a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>

fs/xfs/linux-2.6/xfs_lrw.c

@@ -621,7 +621,7 @@ xfs_write(
 	io = &xip->i_iocore;
 	mp = io->io_mount;
 
-	vfs_wait_for_freeze(XFS_MTOVFS(mp), SB_FREEZE_WRITE);
+	xfs_wait_for_freeze(mp, SB_FREEZE_WRITE);
 
 	if (XFS_FORCED_SHUTDOWN(mp))
 		return -EIO;

fs/xfs/linux-2.6/xfs_super.c

@@ -511,7 +511,7 @@ xfs_flush_device_work(
 	void		*arg)
 {
 	struct inode	*inode = arg;
-	sync_blockdev(mp->m_vfsp->vfs_super->s_bdev);
+	sync_blockdev(mp->m_super->s_bdev);
 	iput(inode);
 }
 
@@ -593,7 +593,6 @@ STATIC void
 xfs_fs_put_super(
 	struct super_block	*sb)
 {
-	bhv_vfs_t		*vfsp = vfs_from_sb(sb);
 	struct xfs_mount	*mp = XFS_M(sb);
 	int			error;
 
@@ -601,12 +600,8 @@ xfs_fs_put_super(
 
 	xfs_sync(mp, SYNC_ATTR | SYNC_DELWRI);
 	error = xfs_unmount(mp, 0, NULL);
-	if (error) {
+	if (error)
 		printk("XFS: unmount got error=%d\n", error);
-		printk("%s: vfs=0x%p left dangling!\n", __FUNCTION__, vfsp);
-	} else {
-		vfs_deallocate(vfsp);
-	}
 }
 
 STATIC void
@@ -764,7 +759,6 @@ xfs_fs_fill_super(
 	int			silent)
 {
 	struct inode		*rootvp;
-	struct bhv_vfs		*vfsp = vfs_allocate(sb);
 	struct xfs_mount	*mp = NULL;
 	struct xfs_mount_args	*args = xfs_args_allocate(sb, silent);
 	struct kstatfs		statvfs;
@@ -776,8 +770,8 @@ xfs_fs_fill_super(
 	spin_lock_init(&mp->m_sync_lock);
 	init_waitqueue_head(&mp->m_wait_single_sync_task);
 
-	mp->m_vfsp = vfsp;
-	vfsp->vfs_mount = mp;
+	mp->m_super = sb;
+	sb->s_fs_info = mp;
 
 	if (sb->s_flags & MS_RDONLY)
 		mp->m_flags |= XFS_MOUNT_RDONLY;
@@ -847,7 +841,6 @@ fail_unmount:
 	xfs_unmount(mp, 0, NULL);
 
 fail_vfsop:
-	vfs_deallocate(vfsp);
 	kmem_free(args, sizeof(*args));
 	return -error;
 }

fs/xfs/linux-2.6/xfs_super.h

@@ -120,7 +120,6 @@ extern void xfs_blkdev_issue_flush(struct xfs_buftarg *);
 
 extern struct export_operations xfs_export_operations;
 
-#define XFS_M(sb) \
-	XFS_VFSTOM(vfs_from_sb(sb))
+#define XFS_M(sb)		((struct xfs_mount *)((sb)->s_fs_info))
 
 #endif	/* __XFS_SUPER_H__ */

fs/xfs/linux-2.6/xfs_vfs.c

@@ -1,226 +0,0 @@
-/*
- * 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 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.  See the
- * GNU General Public License for more details.
- *
- * 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_fs.h"
-#include "xfs_inum.h"
-#include "xfs_log.h"
-#include "xfs_clnt.h"
-#include "xfs_trans.h"
-#include "xfs_sb.h"
-#include "xfs_ag.h"
-#include "xfs_dir2.h"
-#include "xfs_imap.h"
-#include "xfs_alloc.h"
-#include "xfs_dmapi.h"
-#include "xfs_mount.h"
-#include "xfs_quota.h"
-
-int
-vfs_mount(
-	struct bhv_desc		*bdp,
-	struct xfs_mount_args	*args,
-	struct cred		*cr)
-{
-	struct bhv_desc		*next = bdp;
-
-	ASSERT(next);
-	while (! (bhvtovfsops(next))->vfs_mount)
-		next = BHV_NEXT(next);
-	return ((*bhvtovfsops(next)->vfs_mount)(next, args, cr));
-}
-
-int
-vfs_parseargs(
-	struct bhv_desc		*bdp,
-	char			*s,
-	struct xfs_mount_args	*args,
-	int			f)
-{
-	struct bhv_desc		*next = bdp;
-
-	ASSERT(next);
-	while (! (bhvtovfsops(next))->vfs_parseargs)
-		next = BHV_NEXT(next);
-	return ((*bhvtovfsops(next)->vfs_parseargs)(next, s, args, f));
-}
-
-int
-vfs_showargs(
-	struct bhv_desc		*bdp,
-	struct seq_file		*m)
-{
-	struct bhv_desc		*next = bdp;
-
-	ASSERT(next);
-	while (! (bhvtovfsops(next))->vfs_showargs)
-		next = BHV_NEXT(next);
-	return ((*bhvtovfsops(next)->vfs_showargs)(next, m));
-}
-
-int
-vfs_unmount(
-	struct bhv_desc		*bdp,
-	int			fl,
-	struct cred		*cr)
-{
-	struct bhv_desc		*next = bdp;
-
-	ASSERT(next);
-	while (! (bhvtovfsops(next))->vfs_unmount)
-		next = BHV_NEXT(next);
-	return ((*bhvtovfsops(next)->vfs_unmount)(next, fl, cr));
-}
-
-int
-vfs_mntupdate(
-	struct bhv_desc		*bdp,
-	int			*fl,
-	struct xfs_mount_args	*args)
-{
-	struct bhv_desc		*next = bdp;
-
-	ASSERT(next);
-	while (! (bhvtovfsops(next))->vfs_mntupdate)
-		next = BHV_NEXT(next);
-	return ((*bhvtovfsops(next)->vfs_mntupdate)(next, fl, args));
-}
-
-int
-vfs_root(
-	struct bhv_desc		*bdp,
-	bhv_vnode_t		**vpp)
-{
-	struct bhv_desc		*next = bdp;
-
-	ASSERT(next);
-	while (! (bhvtovfsops(next))->vfs_root)
-		next = BHV_NEXT(next);
-	return ((*bhvtovfsops(next)->vfs_root)(next, vpp));
-}
-
-int
-vfs_statvfs(
-	struct bhv_desc		*bdp,
-	bhv_statvfs_t		*statp,
-	bhv_vnode_t		*vp)
-{
-	struct bhv_desc		*next = bdp;
-
-	ASSERT(next);
-	while (! (bhvtovfsops(next))->vfs_statvfs)
-		next = BHV_NEXT(next);
-	return ((*bhvtovfsops(next)->vfs_statvfs)(next, statp, vp));
-}
-
-int
-vfs_sync(
-	struct bhv_desc		*bdp,
-	int			fl,
-	struct cred		*cr)
-{
-	struct bhv_desc		*next = bdp;
-
-	ASSERT(next);
-	while (! (bhvtovfsops(next))->vfs_sync)
-		next = BHV_NEXT(next);
-	return ((*bhvtovfsops(next)->vfs_sync)(next, fl, cr));
-}
-
-int
-vfs_vget(
-	struct bhv_desc		*bdp,
-	bhv_vnode_t		**vpp,
-	struct fid		*fidp)
-{
-	struct bhv_desc		*next = bdp;
-
-	ASSERT(next);
-	while (! (bhvtovfsops(next))->vfs_vget)
-		next = BHV_NEXT(next);
-	return ((*bhvtovfsops(next)->vfs_vget)(next, vpp, fidp));
-}
-
-void
-vfs_init_vnode(
-	struct bhv_desc		*bdp,
-	bhv_vnode_t		*vp,
-	struct xfs_inode	*ip,
-	int			unlock)
-{
-	struct bhv_desc		*next = bdp;
-
-	ASSERT(next);
-	while (! (bhvtovfsops(next))->vfs_init_vnode)
-		next = BHV_NEXT(next);
-	((*bhvtovfsops(next)->vfs_init_vnode)(next, vp, ip, unlock));
-}
-
-void
-vfs_force_shutdown(
-	struct bhv_desc		*bdp,
-	int			fl,
-	char			*file,
-	int			line)
-{
-	struct bhv_desc		*next = bdp;
-
-	ASSERT(next);
-	while (! (bhvtovfsops(next))->vfs_force_shutdown)
-		next = BHV_NEXT(next);
-	((*bhvtovfsops(next)->vfs_force_shutdown)(next, fl, file, line));
-}
-
-void
-vfs_freeze(
-	struct bhv_desc		*bdp)
-{
-	struct bhv_desc		*next = bdp;
-
-	ASSERT(next);
-	while (! (bhvtovfsops(next))->vfs_freeze)
-		next = BHV_NEXT(next);
-	((*bhvtovfsops(next)->vfs_freeze)(next));
-}
-
-bhv_vfs_t *
-vfs_allocate(
-	struct super_block	*sb)
-{
-	struct bhv_vfs		*vfsp;
-
-	vfsp = kmem_zalloc(sizeof(bhv_vfs_t), KM_SLEEP);
-
-	vfsp->vfs_super = sb;
-	sb->s_fs_info = vfsp;
-
-	return vfsp;
-}
-
-bhv_vfs_t *
-vfs_from_sb(
-	struct super_block	*sb)
-{
-	return (bhv_vfs_t *)sb->s_fs_info;
-}
-
-void
-vfs_deallocate(
-	struct bhv_vfs		*vfsp)
-{
-	kmem_free(vfsp, sizeof(bhv_vfs_t));
-}

fs/xfs/linux-2.6/xfs_vfs.h

@@ -21,7 +21,6 @@
 #include <linux/vfs.h>
 #include "xfs_fs.h"
 
-struct bhv_vfs;
 struct inode;
 
 struct fid;
@@ -41,11 +40,6 @@ typedef struct bhv_vfs_sync_work {
 	void			(*w_syncer)(struct xfs_mount *, void *);
 } bhv_vfs_sync_work_t;
 
-typedef struct bhv_vfs {
-	struct xfs_mount	*vfs_mount;
-	struct super_block	*vfs_super;	/* generic superblock pointer */
-} bhv_vfs_t;
-
 #define SYNC_ATTR		0x0001	/* sync attributes */
 #define SYNC_CLOSE		0x0002	/* close file system down */
 #define SYNC_DELWRI		0x0004	/* look at delayed writes */
@@ -78,11 +72,7 @@ typedef struct bhv_vfs {
 #define SHUTDOWN_REMOTE_REQ	0x0010	/* shutdown came from remote cell */
 #define SHUTDOWN_DEVICE_REQ	0x0020	/* failed all paths to the device */
 
-#define vfs_test_for_freeze(vfs)	((vfs)->vfs_super->s_frozen)
-#define vfs_wait_for_freeze(vfs,l)	vfs_check_frozen((vfs)->vfs_super, (l))
- 
-extern bhv_vfs_t *vfs_allocate(struct super_block *);
-extern bhv_vfs_t *vfs_from_sb(struct super_block *);
-extern void vfs_deallocate(bhv_vfs_t *);
+#define xfs_test_for_freeze(mp)		((mp)->m_super->s_frozen)
+#define xfs_wait_for_freeze(mp,l)	vfs_check_frozen((mp)->m_super, (l))
 
 #endif	/* __XFS_VFS_H__ */

fs/xfs/linux-2.6/xfs_vnode.h

@@ -19,7 +19,6 @@
 #define __XFS_VNODE_H__
 
 struct file;
-struct bhv_vfs;
 struct bhv_vattr;
 struct xfs_iomap;
 struct attrlist_cursor_kern;