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Fix up setting up of sector size for the superblock buffer after the
very first read on mount.  Make some of the surrounding code dealing
with buffers consistent.
Merge of 2.4.x-xfs:slinx:135452a by nathans.

/*
 * Copyright (c) 2000-2002 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
 * 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.
 *
 * 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/
 */
#ifndef __XFS_SUPER_H__
#define __XFS_SUPER_H__

#ifdef CONFIG_XFS_POSIX_ACL
# define XFS_ACL_STRING		"ACLs, "
#else
# define XFS_ACL_STRING
#endif

#ifdef CONFIG_XFS_DMAPI
# define XFS_DMAPI_STRING	"DMAPI, "
#else
# define XFS_DMAPI_STRING
#endif

#ifdef CONFIG_XFS_QUOTA
# define XFS_QUOTA_STRING	"quota, "
#else
# define XFS_QUOTA_STRING
#endif

#ifdef CONFIG_XFS_RT
# define XFS_RT_STRING		"realtime, "
#else
# define XFS_RT_STRING
#endif

#ifdef CONFIG_XFS_VNODE_TRACING
# define XFS_VNTRACE_STRING	"VN-trace, "
#else
# define XFS_VNTRACE_STRING
#endif

#ifdef XFSDEBUG
# define XFS_DBG_STRING		"debug"
#else
# define XFS_DBG_STRING		"no debug"
#endif

#define XFS_BUILD_OPTIONS	XFS_ACL_STRING XFS_DMAPI_STRING \
				XFS_RT_STRING \
				XFS_QUOTA_STRING XFS_VNTRACE_STRING \
				XFS_DBG_STRING /* DBG must be last */

#define LINVFS_GET_VFS(s) \
	(vfs_t *)((s)->s_fs_info)
#define LINVFS_SET_VFS(s, vfsp) \
	((s)->s_fs_info = vfsp)

struct xfs_mount;
struct pb_target;
struct block_device;

extern void xfs_initialize_vnode(bhv_desc_t *, vnode_t *, bhv_desc_t *, int);

extern int  xfs_blkdev_get(struct xfs_mount *, const char *,
				struct block_device **);
extern void xfs_blkdev_put(struct block_device *);

extern struct pb_target *xfs_alloc_buftarg(struct block_device *);
extern void xfs_relse_buftarg(struct pb_target *);
extern void xfs_free_buftarg(struct pb_target *);

extern void xfs_setsize_buftarg(struct pb_target *, unsigned int, unsigned int);
extern unsigned int xfs_getsize_buftarg(struct pb_target *);

#endif	/* __XFS_SUPER_H__ */