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kill the vfs_flags member in struct bhv_vfs

All flags are added to xfs_mount's m_flag instead.  Note that the 32bit
inode flag was duplicated in both of them, but only cleared in the
mount when it was not nessecary due to the filesystem beeing small enough.
Two flags are still required here - one to indicate the mount option
setting, and one to indicate if it applies or not.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Merge of xfs-linux-melb:xfs-kern:29507a by kenmcd.

  move vfs_flags to xfs_mount.

/*
 * Copyright (c) 2000-2006 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
 */
#ifndef __XFS_VFS_H__
#define __XFS_VFS_H__

#include <linux/vfs.h>
#include "xfs_fs.h"

struct bhv_vfs;
struct inode;

struct fid;
struct cred;
struct seq_file;
struct super_block;
struct xfs_inode;
struct xfs_mount;
struct xfs_mount_args;

typedef struct kstatfs	bhv_statvfs_t;

typedef struct bhv_vfs_sync_work {
	struct list_head	w_list;
	struct bhv_vfs		*w_vfs;
	void			*w_data;	/* syncer routine argument */
	void			(*w_syncer)(struct bhv_vfs *, void *);
} bhv_vfs_sync_work_t;

typedef struct bhv_vfs {
	struct xfs_mount	*vfs_mount;
	struct super_block	*vfs_super;	/* generic superblock pointer */
	struct task_struct	*vfs_sync_task;	/* generalised sync thread */
	bhv_vfs_sync_work_t	vfs_sync_work;	/* work item for VFS_SYNC */
	struct list_head	vfs_sync_list;	/* sync thread work item list */
	spinlock_t		vfs_sync_lock;	/* work item list lock */
	int			vfs_sync_seq;	/* sync thread generation no. */
	wait_queue_head_t	vfs_wait_single_sync_task;
} 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 */
#define SYNC_WAIT		0x0008	/* wait for i/o to complete */
#define SYNC_BDFLUSH		0x0010	/* BDFLUSH is calling -- don't block */
#define SYNC_FSDATA		0x0020	/* flush fs data (e.g. superblocks) */
#define SYNC_REFCACHE		0x0040  /* prune some of the nfs ref cache */
#define SYNC_REMOUNT		0x0080  /* remount readonly, no dummy LRs */
#define SYNC_IOWAIT		0x0100  /* wait for all I/O to complete */
#define SYNC_SUPER		0x0200  /* flush superblock to disk */

/*
 * When remounting a filesystem read-only or freezing the filesystem,
 * we have two phases to execute. This first phase is syncing the data
 * before we quiesce the fielsystem, and the second is flushing all the
 * inodes out after we've waited for all the transactions created by
 * the first phase to complete. The second phase uses SYNC_INODE_QUIESCE
 * to ensure that the inodes are written to their location on disk
 * rather than just existing in transactions in the log. This means
 * after a quiesce there is no log replay required to write the inodes
 * to disk (this is the main difference between a sync and a quiesce).
 */
#define SYNC_DATA_QUIESCE	(SYNC_DELWRI|SYNC_FSDATA|SYNC_WAIT|SYNC_IOWAIT)
#define SYNC_INODE_QUIESCE	(SYNC_REMOUNT|SYNC_ATTR|SYNC_WAIT)

#define SHUTDOWN_META_IO_ERROR	0x0001	/* write attempt to metadata failed */
#define SHUTDOWN_LOG_IO_ERROR	0x0002	/* write attempt to the log failed */
#define SHUTDOWN_FORCE_UMOUNT	0x0004	/* shutdown from a forced unmount */
#define SHUTDOWN_CORRUPT_INCORE	0x0008	/* corrupt in-memory data structures */
#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 *);

#endif	/* __XFS_VFS_H__ */