[deliverable/linux.git] / fs / xfs / linux-2.6 / xfs_vfs.h

/*
 * 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 bhv_vnode;
struct fid;
struct cred;
struct statfs;
struct seq_file;
struct super_block;
struct xfs_mount_args;

typedef struct kstatfs xfs_statfs_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 {
	u_int			vfs_flag;	/* flags */
	xfs_fsid_t		vfs_fsid;	/* file system ID */
	xfs_fsid_t		*vfs_altfsid;	/* An ID fixed for life of FS */
	bhv_head_t		vfs_bh;		/* head of vfs behavior chain */
	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 bhvtovfs(bdp)		( (struct bhv_vfs *)BHV_VOBJ(bdp) )
#define bhvtovfsops(bdp)	( (struct bhv_vfsops *)BHV_OPS(bdp) )
#define VFS_BHVHEAD(vfs)	( &(vfs)->vfs_bh )
#define VFS_REMOVEBHV(vfs, bdp)	( bhv_remove(VFS_BHVHEAD(vfs), bdp) )

#define VFS_POSITION_BASE	BHV_POSITION_BASE	/* chain bottom */
#define VFS_POSITION_TOP	BHV_POSITION_TOP	/* chain top */
#define VFS_POSITION_INVALID	BHV_POSITION_INVALID	/* invalid pos. num */

typedef enum {
	VFS_BHV_UNKNOWN,	/* not specified */
	VFS_BHV_XFS,		/* xfs */
	VFS_BHV_DM,		/* data migration */
	VFS_BHV_QM,		/* quota manager */
	VFS_BHV_IO,		/* IO path */
	VFS_BHV_END		/* housekeeping end-of-range */
} bhv_vfs_type_t;

#define VFS_POSITION_XFS	(BHV_POSITION_BASE)
#define VFS_POSITION_DM		(VFS_POSITION_BASE+10)
#define VFS_POSITION_QM		(VFS_POSITION_BASE+20)
#define VFS_POSITION_IO		(VFS_POSITION_BASE+30)

#define VFS_RDONLY		0x0001	/* read-only vfs */
#define VFS_GRPID		0x0002	/* group-ID assigned from directory */
#define VFS_DMI			0x0004	/* filesystem has the DMI enabled */
#define VFS_UMOUNT		0x0008	/* unmount in progress */
#define VFS_32BITINODES		0x0010	/* do not use inums above 32 bits */
#define VFS_END			0x0010	/* max flag */

#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_QUIESCE		0x0100  /* quiesce fileystem for a snapshot */

#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 */

typedef int	(*vfs_mount_t)(bhv_desc_t *,
				struct xfs_mount_args *, struct cred *);
typedef int	(*vfs_parseargs_t)(bhv_desc_t *, char *,
				struct xfs_mount_args *, int);
typedef	int	(*vfs_showargs_t)(bhv_desc_t *, struct seq_file *);
typedef int	(*vfs_unmount_t)(bhv_desc_t *, int, struct cred *);
typedef int	(*vfs_mntupdate_t)(bhv_desc_t *, int *,
				struct xfs_mount_args *);
typedef int	(*vfs_root_t)(bhv_desc_t *, struct bhv_vnode **);
typedef int	(*vfs_statvfs_t)(bhv_desc_t *, xfs_statfs_t *,
				struct bhv_vnode *);
typedef int	(*vfs_sync_t)(bhv_desc_t *, int, struct cred *);
typedef int	(*vfs_vget_t)(bhv_desc_t *, struct bhv_vnode **, struct fid *);
typedef int	(*vfs_dmapiops_t)(bhv_desc_t *, caddr_t);
typedef int	(*vfs_quotactl_t)(bhv_desc_t *, int, int, caddr_t);
typedef void	(*vfs_init_vnode_t)(bhv_desc_t *,
				struct bhv_vnode *, bhv_desc_t *, int);
typedef void	(*vfs_force_shutdown_t)(bhv_desc_t *, int, char *, int);
typedef void	(*vfs_freeze_t)(bhv_desc_t *);

typedef struct bhv_vfsops {
	bhv_position_t		vf_position;	/* behavior chain position */
	vfs_mount_t		vfs_mount;	/* mount file system */
	vfs_parseargs_t		vfs_parseargs;	/* parse mount options */
	vfs_showargs_t		vfs_showargs;	/* unparse mount options */
	vfs_unmount_t		vfs_unmount;	/* unmount file system */
	vfs_mntupdate_t		vfs_mntupdate;	/* update file system options */
	vfs_root_t		vfs_root;	/* get root vnode */
	vfs_statvfs_t		vfs_statvfs;	/* file system statistics */
	vfs_sync_t		vfs_sync;	/* flush files */
	vfs_vget_t		vfs_vget;	/* get vnode from fid */
	vfs_dmapiops_t		vfs_dmapiops;	/* data migration */
	vfs_quotactl_t		vfs_quotactl;	/* disk quota */
	vfs_init_vnode_t	vfs_init_vnode;	/* initialize a new vnode */
	vfs_force_shutdown_t	vfs_force_shutdown;	/* crash and burn */
	vfs_freeze_t		vfs_freeze;	/* freeze fs for snapshot */
} bhv_vfsops_t;

/*
 * Virtual filesystem operations, operating from head bhv.
 */
#define VFSHEAD(v)			((v)->vfs_bh.bh_first)
#define bhv_vfs_mount(v, ma,cr)		vfs_mount(VFSHEAD(v), ma,cr)
#define bhv_vfs_parseargs(v, o,ma,f)	vfs_parseargs(VFSHEAD(v), o,ma,f)
#define bhv_vfs_showargs(v, m)		vfs_showargs(VFSHEAD(v), m)
#define bhv_vfs_unmount(v, f,cr)	vfs_unmount(VFSHEAD(v), f,cr)
#define bhv_vfs_mntupdate(v, fl,args)	vfs_mntupdate(VFSHEAD(v), fl,args)
#define bhv_vfs_root(v, vpp)		vfs_root(VFSHEAD(v), vpp)
#define bhv_vfs_statvfs(v, sp,vp)	vfs_statvfs(VFSHEAD(v), sp,vp)
#define bhv_vfs_sync(v, flag,cr)	vfs_sync(VFSHEAD(v), flag,cr)
#define bhv_vfs_vget(v, vpp,fidp)	vfs_vget(VFSHEAD(v), vpp,fidp)
#define bhv_vfs_dmapiops(v, p)		vfs_dmapiops(VFSHEAD(v), p)
#define bhv_vfs_quotactl(v, c,id,p)	vfs_quotactl(VFSHEAD(v), c,id,p)
#define bhv_vfs_init_vnode(v, vp,b,ul)	vfs_init_vnode(VFSHEAD(v), vp,b,ul)
#define bhv_vfs_force_shutdown(v,u,f,l)	vfs_force_shutdown(VFSHEAD(v), u,f,l)
#define bhv_vfs_freeze(v)		vfs_freeze(VFSHEAD(v))

/*
 * Virtual filesystem operations, operating from next bhv.
 */
#define bhv_next_vfs_mount(b, ma,cr)		vfs_mount(b, ma,cr)
#define bhv_next_vfs_parseargs(b, o,ma,f)	vfs_parseargs(b, o,ma,f)
#define bhv_next_vfs_showargs(b, m)		vfs_showargs(b, m)
#define bhv_next_vfs_unmount(b, f,cr)		vfs_unmount(b, f,cr)
#define bhv_next_vfs_mntupdate(b, fl,args)	vfs_mntupdate(b, fl, args)
#define bhv_next_vfs_root(b, vpp)		vfs_root(b, vpp)
#define bhv_next_vfs_statvfs(b, sp,vp)		vfs_statvfs(b, sp,vp)
#define bhv_next_vfs_sync(b, flag,cr)		vfs_sync(b, flag,cr)
#define bhv_next_vfs_vget(b, vpp,fidp)		vfs_vget(b, vpp,fidp)
#define bhv_next_vfs_dmapiops(b, p)		vfs_dmapiops(b, p)
#define bhv_next_vfs_quotactl(b, c,id,p)	vfs_quotactl(b, c,id,p)
#define bhv_next_vfs_init_vnode(b, vp,b2,ul)	vfs_init_vnode(b, vp,b2,ul)
#define bhv_next_force_shutdown(b, fl,f,l)	vfs_force_shutdown(b, fl,f,l)
#define bhv_next_vfs_freeze(b)			vfs_freeze(b)

extern int vfs_mount(bhv_desc_t *, struct xfs_mount_args *, struct cred *);
extern int vfs_parseargs(bhv_desc_t *, char *, struct xfs_mount_args *, int);
extern int vfs_showargs(bhv_desc_t *, struct seq_file *);
extern int vfs_unmount(bhv_desc_t *, int, struct cred *);
extern int vfs_mntupdate(bhv_desc_t *, int *, struct xfs_mount_args *);
extern int vfs_root(bhv_desc_t *, struct bhv_vnode **);
extern int vfs_statvfs(bhv_desc_t *, xfs_statfs_t *, struct bhv_vnode *);
extern int vfs_sync(bhv_desc_t *, int, struct cred *);
extern int vfs_vget(bhv_desc_t *, struct bhv_vnode **, struct fid *);
extern int vfs_dmapiops(bhv_desc_t *, caddr_t);
extern int vfs_quotactl(bhv_desc_t *, int, int, caddr_t);
extern void vfs_init_vnode(bhv_desc_t *, struct bhv_vnode *, bhv_desc_t *, int);
extern void vfs_force_shutdown(bhv_desc_t *, int, char *, int);
extern void vfs_freeze(bhv_desc_t *);

typedef struct bhv_module_vfsops {
	struct bhv_vfsops	bhv_common;
	void *			bhv_custom;
} bhv_module_vfsops_t;

#define vfs_bhv_lookup(v, id)	(bhv_lookup_range(&(v)->vfs_bh, (id), (id)))
#define vfs_bhv_custom(b)	(((bhv_module_vfsops_t*)BHV_OPS(b))->bhv_custom)
#define vfs_bhv_set_custom(b,o)	((b)->bhv_custom = (void *)(o))
#define vfs_bhv_clr_custom(b)	((b)->bhv_custom = NULL)

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 *);
extern void vfs_insertbhv(bhv_vfs_t *, bhv_desc_t *, bhv_vfsops_t *, void *);

extern void vfs_insertops(bhv_vfs_t *, bhv_module_vfsops_t *);

extern void bhv_insert_all_vfsops(struct bhv_vfs *);
extern void bhv_remove_all_vfsops(struct bhv_vfs *, int);
extern void bhv_remove_vfsops(struct bhv_vfs *, int);

#define fs_frozen(vfsp)		((vfsp)->vfs_super->s_frozen)
#define fs_check_frozen(vfsp, level) \
	vfs_check_frozen(vfsp->vfs_super, level);

#endif	/* __XFS_VFS_H__ */
Commit	Line	Data
1da177e4	1	/*
b83bd138	2	* Copyright (c) 2000-2006 Silicon Graphics, Inc.
7b718769	3	* All Rights Reserved.
1da177e4	4	*
7b718769 NS	5	* This program is free software; you can redistribute it and/or
7b718769 NS	6	* modify it under the terms of the GNU General Public License as
1da177e4 LT	7	* published by the Free Software Foundation.
1da177e4 LT	8	*
7b718769 NS	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.
1da177e4	13	*
7b718769 NS	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
1da177e4 LT	17	*/
	18	#ifndef __XFS_VFS_H__
	19	#define __XFS_VFS_H__
	20
	21	#include <linux/vfs.h>
	22	#include "xfs_fs.h"
	23
b83bd138	24	struct bhv_vfs;
67fcaa73	25	struct bhv_vnode;
1da177e4	26	struct fid;
1da177e4	27	struct cred;
b83bd138	28	struct statfs;
1da177e4 LT	29	struct seq_file;
	30	struct super_block;
	31	struct xfs_mount_args;
	32
	33	typedef struct kstatfs xfs_statfs_t;
	34
b83bd138	35	typedef struct bhv_vfs_sync_work {
1da177e4	36	struct list_head w_list;
b83bd138	37	struct bhv_vfs *w_vfs;
1da177e4	38	void w_data; / syncer routine argument */
b83bd138 NS	39	void (w_syncer)(struct bhv_vfs , void *);
b83bd138 NS	40	} bhv_vfs_sync_work_t;
1da177e4	41
b83bd138	42	typedef struct bhv_vfs {
1da177e4 LT	43	u_int vfs_flag; /* flags */
	44	xfs_fsid_t vfs_fsid; /* file system ID */
	45	xfs_fsid_t vfs_altfsid; / An ID fixed for life of FS */
	46	bhv_head_t vfs_bh; /* head of vfs behavior chain */
	47	struct super_block vfs_super; / generic superblock pointer */
	48	struct task_struct vfs_sync_task; / generalised sync thread */
b83bd138	49	bhv_vfs_sync_work_t vfs_sync_work; /* work item for VFS_SYNC */
1da177e4 LT	50	struct list_head vfs_sync_list; /* sync thread work item list */
1da177e4 LT	51	spinlock_t vfs_sync_lock; /* work item list lock */
b83bd138	52	int vfs_sync_seq; /* sync thread generation no. */
1da177e4	53	wait_queue_head_t vfs_wait_single_sync_task;
b83bd138	54	} bhv_vfs_t;
1da177e4	55
b83bd138 NS	56	#define bhvtovfs(bdp) ( (struct bhv_vfs *)BHV_VOBJ(bdp) )
b83bd138 NS	57	#define bhvtovfsops(bdp) ( (struct bhv_vfsops *)BHV_OPS(bdp) )
1da177e4 LT	58	#define VFS_BHVHEAD(vfs) ( &(vfs)->vfs_bh )
	59	#define VFS_REMOVEBHV(vfs, bdp) ( bhv_remove(VFS_BHVHEAD(vfs), bdp) )
	60
	61	#define VFS_POSITION_BASE BHV_POSITION_BASE /* chain bottom */
	62	#define VFS_POSITION_TOP BHV_POSITION_TOP /* chain top */
	63	#define VFS_POSITION_INVALID BHV_POSITION_INVALID /* invalid pos. num */
	64
	65	typedef enum {
	66	VFS_BHV_UNKNOWN, /* not specified */
	67	VFS_BHV_XFS, /* xfs */
	68	VFS_BHV_DM, /* data migration */
	69	VFS_BHV_QM, /* quota manager */
	70	VFS_BHV_IO, /* IO path */
	71	VFS_BHV_END /* housekeeping end-of-range */
b83bd138	72	} bhv_vfs_type_t;
1da177e4 LT	73
	74	#define VFS_POSITION_XFS (BHV_POSITION_BASE)
	75	#define VFS_POSITION_DM (VFS_POSITION_BASE+10)
	76	#define VFS_POSITION_QM (VFS_POSITION_BASE+20)
	77	#define VFS_POSITION_IO (VFS_POSITION_BASE+30)
	78
	79	#define VFS_RDONLY 0x0001 /* read-only vfs */
	80	#define VFS_GRPID 0x0002 /* group-ID assigned from directory */
	81	#define VFS_DMI 0x0004 /* filesystem has the DMI enabled */
b83bd138 NS	82	#define VFS_UMOUNT 0x0008 /* unmount in progress */
	83	#define VFS_32BITINODES 0x0010 /* do not use inums above 32 bits */
	84	#define VFS_END 0x0010 /* max flag */
1da177e4 LT	85
	86	#define SYNC_ATTR 0x0001 /* sync attributes */
	87	#define SYNC_CLOSE 0x0002 /* close file system down */
	88	#define SYNC_DELWRI 0x0004 /* look at delayed writes */
	89	#define SYNC_WAIT 0x0008 /* wait for i/o to complete */
	90	#define SYNC_BDFLUSH 0x0010 /* BDFLUSH is calling -- don't block */
	91	#define SYNC_FSDATA 0x0020 /* flush fs data (e.g. superblocks) */
	92	#define SYNC_REFCACHE 0x0040 /* prune some of the nfs ref cache */
	93	#define SYNC_REMOUNT 0x0080 /* remount readonly, no dummy LRs */
b83bd138	94	#define SYNC_QUIESCE 0x0100 /* quiesce fileystem for a snapshot */
1da177e4	95
7d04a335 NS	96	#define SHUTDOWN_META_IO_ERROR 0x0001 /* write attempt to metadata failed */
	97	#define SHUTDOWN_LOG_IO_ERROR 0x0002 /* write attempt to the log failed */
	98	#define SHUTDOWN_FORCE_UMOUNT 0x0004 /* shutdown from a forced unmount */
	99	#define SHUTDOWN_CORRUPT_INCORE 0x0008 /* corrupt in-memory data structures */
	100	#define SHUTDOWN_REMOTE_REQ 0x0010 /* shutdown came from remote cell */
	101	#define SHUTDOWN_DEVICE_REQ 0x0020 /* failed all paths to the device */
	102
1da177e4 LT	103	typedef int (vfs_mount_t)(bhv_desc_t ,
	104	struct xfs_mount_args , struct cred );
	105	typedef int (vfs_parseargs_t)(bhv_desc_t , char *,
	106	struct xfs_mount_args *, int);
	107	typedef int (vfs_showargs_t)(bhv_desc_t , struct seq_file *);
	108	typedef int (vfs_unmount_t)(bhv_desc_t , int, struct cred *);
	109	typedef int (vfs_mntupdate_t)(bhv_desc_t , int *,
	110	struct xfs_mount_args *);
67fcaa73 NS	111	typedef int (vfs_root_t)(bhv_desc_t , struct bhv_vnode **);
	112	typedef int (vfs_statvfs_t)(bhv_desc_t , xfs_statfs_t *,
	113	struct bhv_vnode *);
1da177e4	114	typedef int (vfs_sync_t)(bhv_desc_t , int, struct cred *);
67fcaa73	115	typedef int (vfs_vget_t)(bhv_desc_t , struct bhv_vnode *, struct fid );
1da177e4 LT	116	typedef int (vfs_dmapiops_t)(bhv_desc_t , caddr_t);
	117	typedef int (vfs_quotactl_t)(bhv_desc_t , int, int, caddr_t);
	118	typedef void (vfs_init_vnode_t)(bhv_desc_t ,
67fcaa73	119	struct bhv_vnode , bhv_desc_t , int);
1da177e4 LT	120	typedef void (vfs_force_shutdown_t)(bhv_desc_t , int, char *, int);
	121	typedef void (vfs_freeze_t)(bhv_desc_t );
	122
b83bd138	123	typedef struct bhv_vfsops {
1da177e4 LT	124	bhv_position_t vf_position; /* behavior chain position */
	125	vfs_mount_t vfs_mount; /* mount file system */
	126	vfs_parseargs_t vfs_parseargs; /* parse mount options */
	127	vfs_showargs_t vfs_showargs; /* unparse mount options */
	128	vfs_unmount_t vfs_unmount; /* unmount file system */
	129	vfs_mntupdate_t vfs_mntupdate; /* update file system options */
	130	vfs_root_t vfs_root; /* get root vnode */
	131	vfs_statvfs_t vfs_statvfs; /* file system statistics */
	132	vfs_sync_t vfs_sync; /* flush files */
	133	vfs_vget_t vfs_vget; /* get vnode from fid */
	134	vfs_dmapiops_t vfs_dmapiops; /* data migration */
	135	vfs_quotactl_t vfs_quotactl; /* disk quota */
	136	vfs_init_vnode_t vfs_init_vnode; /* initialize a new vnode */
	137	vfs_force_shutdown_t vfs_force_shutdown; /* crash and burn */
	138	vfs_freeze_t vfs_freeze; /* freeze fs for snapshot */
b83bd138	139	} bhv_vfsops_t;
1da177e4 LT	140
1da177e4 LT	141	/*
67fcaa73	142	* Virtual filesystem operations, operating from head bhv.
1da177e4	143	*/
67fcaa73 NS	144	#define VFSHEAD(v) ((v)->vfs_bh.bh_first)
	145	#define bhv_vfs_mount(v, ma,cr) vfs_mount(VFSHEAD(v), ma,cr)
	146	#define bhv_vfs_parseargs(v, o,ma,f) vfs_parseargs(VFSHEAD(v), o,ma,f)
	147	#define bhv_vfs_showargs(v, m) vfs_showargs(VFSHEAD(v), m)
	148	#define bhv_vfs_unmount(v, f,cr) vfs_unmount(VFSHEAD(v), f,cr)
	149	#define bhv_vfs_mntupdate(v, fl,args) vfs_mntupdate(VFSHEAD(v), fl,args)
	150	#define bhv_vfs_root(v, vpp) vfs_root(VFSHEAD(v), vpp)
	151	#define bhv_vfs_statvfs(v, sp,vp) vfs_statvfs(VFSHEAD(v), sp,vp)
	152	#define bhv_vfs_sync(v, flag,cr) vfs_sync(VFSHEAD(v), flag,cr)
	153	#define bhv_vfs_vget(v, vpp,fidp) vfs_vget(VFSHEAD(v), vpp,fidp)
	154	#define bhv_vfs_dmapiops(v, p) vfs_dmapiops(VFSHEAD(v), p)
	155	#define bhv_vfs_quotactl(v, c,id,p) vfs_quotactl(VFSHEAD(v), c,id,p)
	156	#define bhv_vfs_init_vnode(v, vp,b,ul) vfs_init_vnode(VFSHEAD(v), vp,b,ul)
	157	#define bhv_vfs_force_shutdown(v,u,f,l) vfs_force_shutdown(VFSHEAD(v), u,f,l)
	158	#define bhv_vfs_freeze(v) vfs_freeze(VFSHEAD(v))
1da177e4 LT	159
1da177e4 LT	160	/*
67fcaa73	161	* Virtual filesystem operations, operating from next bhv.
1da177e4	162	*/
b83bd138 NS	163	#define bhv_next_vfs_mount(b, ma,cr) vfs_mount(b, ma,cr)
	164	#define bhv_next_vfs_parseargs(b, o,ma,f) vfs_parseargs(b, o,ma,f)
	165	#define bhv_next_vfs_showargs(b, m) vfs_showargs(b, m)
	166	#define bhv_next_vfs_unmount(b, f,cr) vfs_unmount(b, f,cr)
	167	#define bhv_next_vfs_mntupdate(b, fl,args) vfs_mntupdate(b, fl, args)
	168	#define bhv_next_vfs_root(b, vpp) vfs_root(b, vpp)
	169	#define bhv_next_vfs_statvfs(b, sp,vp) vfs_statvfs(b, sp,vp)
	170	#define bhv_next_vfs_sync(b, flag,cr) vfs_sync(b, flag,cr)
	171	#define bhv_next_vfs_vget(b, vpp,fidp) vfs_vget(b, vpp,fidp)
	172	#define bhv_next_vfs_dmapiops(b, p) vfs_dmapiops(b, p)
	173	#define bhv_next_vfs_quotactl(b, c,id,p) vfs_quotactl(b, c,id,p)
	174	#define bhv_next_vfs_init_vnode(b, vp,b2,ul) vfs_init_vnode(b, vp,b2,ul)
	175	#define bhv_next_force_shutdown(b, fl,f,l) vfs_force_shutdown(b, fl,f,l)
	176	#define bhv_next_vfs_freeze(b) vfs_freeze(b)
1da177e4 LT	177
	178	extern int vfs_mount(bhv_desc_t , struct xfs_mount_args , struct cred *);
	179	extern int vfs_parseargs(bhv_desc_t , char , struct xfs_mount_args *, int);
	180	extern int vfs_showargs(bhv_desc_t , struct seq_file );
	181	extern int vfs_unmount(bhv_desc_t , int, struct cred );
	182	extern int vfs_mntupdate(bhv_desc_t , int , struct xfs_mount_args *);
67fcaa73 NS	183	extern int vfs_root(bhv_desc_t , struct bhv_vnode *);
67fcaa73 NS	184	extern int vfs_statvfs(bhv_desc_t , xfs_statfs_t , struct bhv_vnode *);
1da177e4	185	extern int vfs_sync(bhv_desc_t , int, struct cred );
67fcaa73	186	extern int vfs_vget(bhv_desc_t , struct bhv_vnode , struct fid );
1da177e4 LT	187	extern int vfs_dmapiops(bhv_desc_t *, caddr_t);
1da177e4 LT	188	extern int vfs_quotactl(bhv_desc_t *, int, int, caddr_t);
67fcaa73	189	extern void vfs_init_vnode(bhv_desc_t , struct bhv_vnode , bhv_desc_t *, int);
1da177e4 LT	190	extern void vfs_force_shutdown(bhv_desc_t , int, char , int);
	191	extern void vfs_freeze(bhv_desc_t *);
	192
b83bd138 NS	193	typedef struct bhv_module_vfsops {
b83bd138 NS	194	struct bhv_vfsops bhv_common;
1da177e4	195	void * bhv_custom;
b83bd138 NS	196	} bhv_module_vfsops_t;
	197
	198	#define vfs_bhv_lookup(v, id) (bhv_lookup_range(&(v)->vfs_bh, (id), (id)))
	199	#define vfs_bhv_custom(b) (((bhv_module_vfsops_t*)BHV_OPS(b))->bhv_custom)
	200	#define vfs_bhv_set_custom(b,o) ((b)->bhv_custom = (void *)(o))
	201	#define vfs_bhv_clr_custom(b) ((b)->bhv_custom = NULL)
1da177e4	202
b83bd138 NS	203	extern bhv_vfs_t vfs_allocate(struct super_block );
	204	extern bhv_vfs_t vfs_from_sb(struct super_block );
	205	extern void vfs_deallocate(bhv_vfs_t *);
	206	extern void vfs_insertbhv(bhv_vfs_t , bhv_desc_t , bhv_vfsops_t , void );
1da177e4	207
b83bd138	208	extern void vfs_insertops(bhv_vfs_t , bhv_module_vfsops_t );
1da177e4	209
b83bd138 NS	210	extern void bhv_insert_all_vfsops(struct bhv_vfs *);
	211	extern void bhv_remove_all_vfsops(struct bhv_vfs *, int);
	212	extern void bhv_remove_vfsops(struct bhv_vfs *, int);
1da177e4 LT	213
	214	#define fs_frozen(vfsp) ((vfsp)->vfs_super->s_frozen)
	215	#define fs_check_frozen(vfsp, level) \
	216	vfs_check_frozen(vfsp->vfs_super, level);
	217
	218	#endif /* __XFS_VFS_H__ */