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Separate the quota source into its own subdirectory ala dmapi.
Push a bunch of quota- and dmapi-specific code down into these
subdirs which previously was compiled into the core XFS code,
and don't descend into these subdirs if options config'd off.
Separate the quota source into its own subdirectory ala dmapi.
Push a bunch of quota- and dmapi-specific code down into these
subdirs which previously was compiled into the core XFS code,
and don't descend into these subdirs if options config'd off.

/*
 * Copyright (c) 2000-2003 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_MOUNT_H__
#define __XFS_MOUNT_H__


typedef struct xfs_trans_reservations {
	uint	tr_write;	/* extent alloc trans */
	uint	tr_itruncate;	/* truncate trans */
	uint	tr_rename;	/* rename trans */
	uint	tr_link;	/* link trans */
	uint	tr_remove;	/* unlink trans */
	uint	tr_symlink;	/* symlink trans */
	uint	tr_create;	/* create trans */
	uint	tr_mkdir;	/* mkdir trans */
	uint	tr_ifree;	/* inode free trans */
	uint	tr_ichange;	/* inode update trans */
	uint	tr_growdata;	/* fs data section grow trans */
	uint	tr_swrite;	/* sync write inode trans */
	uint	tr_addafork;	/* cvt inode to attributed trans */
	uint	tr_writeid;	/* write setuid/setgid file */
	uint	tr_attrinval;	/* attr fork buffer invalidation */
	uint	tr_attrset;	/* set/create an attribute */
	uint	tr_attrrm;	/* remove an attribute */
	uint	tr_clearagi;	/* clear bad agi unlinked ino bucket */
	uint	tr_growrtalloc; /* grow realtime allocations */
	uint	tr_growrtzero;	/* grow realtime zeroing */
	uint	tr_growrtfree;	/* grow realtime freeing */
} xfs_trans_reservations_t;


#ifndef __KERNEL__
/*
 * Moved here from xfs_ag.h to avoid reordering header files
 */
#define XFS_DADDR_TO_AGNO(mp,d) \
	((xfs_agnumber_t)(XFS_BB_TO_FSBT(mp, d) / (mp)->m_sb.sb_agblocks))
#define XFS_DADDR_TO_AGBNO(mp,d) \
	((xfs_agblock_t)(XFS_BB_TO_FSBT(mp, d) % (mp)->m_sb.sb_agblocks))
#else
struct cred;
struct vfs;
struct vnode;
struct xfs_mount_args;
struct xfs_ihash;
struct xfs_chash;
struct xfs_inode;
struct xfs_perag;
struct xfs_iocore;
struct xfs_bmbt_irec;
struct xfs_bmap_free;

#define SPLDECL(s)		unsigned long s
#define AIL_LOCK_T		lock_t
#define AIL_LOCKINIT(x,y)	spinlock_init(x,y)
#define AIL_LOCK_DESTROY(x)	spinlock_destroy(x)
#define AIL_LOCK(mp,s)		s=mutex_spinlock(&(mp)->m_ail_lock)
#define AIL_UNLOCK(mp,s)	mutex_spinunlock(&(mp)->m_ail_lock, s)


/*
 * Prototypes and functions for the Data Migration subsystem.
 */

typedef int	(*xfs_send_data_t)(int, struct bhv_desc *,
			xfs_off_t, size_t, int, vrwlock_t *);
typedef int	(*xfs_send_mmap_t)(struct vm_area_struct *, uint);
typedef int	(*xfs_send_destroy_t)(struct bhv_desc *, dm_right_t);
typedef int	(*xfs_send_namesp_t)(dm_eventtype_t, struct bhv_desc *,
			dm_right_t, struct bhv_desc *, dm_right_t,
			char *, char *, mode_t, int, int);
typedef void	(*xfs_send_unmount_t)(struct vfs *, struct vnode *,
			dm_right_t, mode_t, int, int);

typedef struct xfs_dmops {
	xfs_send_data_t		xfs_send_data;
	xfs_send_mmap_t		xfs_send_mmap;
	xfs_send_destroy_t	xfs_send_destroy;
	xfs_send_namesp_t	xfs_send_namesp;
	xfs_send_unmount_t	xfs_send_unmount;
} xfs_dmops_t;

#define XFS_SEND_DATA(mp, ev,bdp,off,len,fl,lock) \
	(*(mp)->m_dm_ops.xfs_send_data)(ev,bdp,off,len,fl,lock)
#define XFS_SEND_MMAP(mp, vma,fl) \
	(*(mp)->m_dm_ops.xfs_send_mmap)(vma,fl)
#define XFS_SEND_DESTROY(mp, bdp,right) \
	(*(mp)->m_dm_ops.xfs_send_destroy)(bdp,right)
#define XFS_SEND_NAMESP(mp, ev,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
	(*(mp)->m_dm_ops.xfs_send_namesp)(ev,b1,r1,b2,r2,n1,n2,mode,rval,fl)
#define XFS_SEND_UNMOUNT(mp, vfsp,vp,right,mode,rval,fl) \
	(*(mp)->m_dm_ops.xfs_send_unmount)(vfsp,vp,right,mode,rval,fl)


/*
 * Prototypes and functions for the Quota Management subsystem.
 */

struct xfs_dquot;
struct xfs_dqtrxops;
struct xfs_quotainfo;

typedef int	(*xfs_qminit_t)(struct xfs_mount *, uint *, uint *);
typedef int	(*xfs_qmmount_t)(struct xfs_mount *, uint, uint);
typedef int	(*xfs_qmunmount_t)(struct xfs_mount *);
typedef void	(*xfs_qmdone_t)(struct xfs_mount *);
typedef void	(*xfs_dqrele_t)(struct xfs_dquot *);
typedef int	(*xfs_dqattach_t)(struct xfs_inode *, uint);
typedef void	(*xfs_dqdetach_t)(struct xfs_inode *);
typedef int	(*xfs_dqpurgeall_t)(struct xfs_mount *, uint);
typedef int	(*xfs_dqvopalloc_t)(struct xfs_mount *,
			struct xfs_inode *, uid_t, gid_t, uint,
			struct xfs_dquot **, struct xfs_dquot **);
typedef void	(*xfs_dqvopcreate_t)(struct xfs_trans *, struct xfs_inode *,
			struct xfs_dquot *, struct xfs_dquot *);
typedef int	(*xfs_dqvoprename_t)(struct xfs_inode **);
typedef struct xfs_dquot * (*xfs_dqvopchown_t)(
			struct xfs_trans *, struct xfs_inode *,
			struct xfs_dquot **, struct xfs_dquot *);
typedef int	(*xfs_dqvopchownresv_t)(struct xfs_trans *, struct xfs_inode *,
			struct xfs_dquot *, struct xfs_dquot *, uint);

typedef struct xfs_qmops {
	xfs_qminit_t		xfs_qminit;
	xfs_qmdone_t		xfs_qmdone;
	xfs_qmmount_t		xfs_qmmount;
	xfs_qmunmount_t		xfs_qmunmount;
	xfs_dqrele_t		xfs_dqrele;
	xfs_dqattach_t		xfs_dqattach;
	xfs_dqdetach_t		xfs_dqdetach;
	xfs_dqpurgeall_t	xfs_dqpurgeall;
	xfs_dqvopalloc_t	xfs_dqvopalloc;
	xfs_dqvopcreate_t	xfs_dqvopcreate;
	xfs_dqvoprename_t	xfs_dqvoprename;
	xfs_dqvopchown_t	xfs_dqvopchown;
	xfs_dqvopchownresv_t	xfs_dqvopchownresv;
	struct xfs_dqtrxops	*xfs_dqtrxops;
} xfs_qmops_t;

#define XFS_QM_INIT(mp, mnt, fl) \
	(*(mp)->m_qm_ops.xfs_qminit)(mp, mnt, fl)
#define XFS_QM_MOUNT(mp, mnt, fl) \
	(*(mp)->m_qm_ops.xfs_qmmount)(mp, mnt, fl)
#define XFS_QM_UNMOUNT(mp) \
	(*(mp)->m_qm_ops.xfs_qmunmount)(mp)
#define XFS_QM_DONE(mp) \
	(*(mp)->m_qm_ops.xfs_qmdone)(mp)
#define XFS_QM_DQRELE(mp, dq) \
	(*(mp)->m_qm_ops.xfs_dqrele)(dq)
#define XFS_QM_DQATTACH(mp, ip, fl) \
	(*(mp)->m_qm_ops.xfs_dqattach)(ip, fl)
#define XFS_QM_DQDETACH(mp, ip) \
	(*(mp)->m_qm_ops.xfs_dqdetach)(ip)
#define XFS_QM_DQPURGEALL(mp, fl) \
	(*(mp)->m_qm_ops.xfs_dqpurgeall)(mp, fl)
#define XFS_QM_DQVOPALLOC(mp, ip, uid, gid, fl, dq1, dq2) \
	(*(mp)->m_qm_ops.xfs_dqvopalloc)(mp, ip, uid, gid, fl, dq1, dq2)
#define XFS_QM_DQVOPCREATE(mp, tp, ip, dq1, dq2) \
	(*(mp)->m_qm_ops.xfs_dqvopcreate)(tp, ip, dq1, dq2)
#define XFS_QM_DQVOPRENAME(mp, ip) \
	(*(mp)->m_qm_ops.xfs_dqvoprename)(ip)
#define XFS_QM_DQVOPCHOWN(mp, tp, ip, dqp, dq) \
	(*(mp)->m_qm_ops.xfs_dqvopchown)(tp, ip, dqp, dq)
#define XFS_QM_DQVOPCHOWNRESV(mp, tp, ip, dq1, dq2, fl) \
	(*(mp)->m_qm_ops.xfs_dqvopchownresv)(tp, ip, dq1, dq2, fl)


/*
 * Prototypes and functions for I/O core modularization.
 */
 
typedef int		(*xfs_ioinit_t)(struct vfs *,
				struct xfs_mount_args *, int);
typedef int		(*xfs_bmapi_t)(struct xfs_trans *, void *,
				xfs_fileoff_t, xfs_filblks_t, int,
				xfs_fsblock_t *, xfs_extlen_t,
				struct xfs_bmbt_irec *, int *,
				struct xfs_bmap_free *);
typedef int		(*xfs_bmap_eof_t)(void *, xfs_fileoff_t, int, int *);
typedef int		(*xfs_iomap_write_direct_t)(
				void *, loff_t, size_t, int,
				struct xfs_bmbt_irec *, int *, int);
typedef int		(*xfs_iomap_write_delay_t)(
				void *, loff_t, size_t, int,
				struct xfs_bmbt_irec *, int *);
typedef int		(*xfs_iomap_write_allocate_t)(
				void *, struct xfs_bmbt_irec *, int *);
typedef int		(*xfs_iomap_write_unwritten_t)(
				void *, loff_t, size_t);
typedef uint		(*xfs_lck_map_shared_t)(void *);
typedef void		(*xfs_lock_t)(void *, uint);
typedef void		(*xfs_lock_demote_t)(void *, uint);
typedef int		(*xfs_lock_nowait_t)(void *, uint);
typedef void		(*xfs_unlk_t)(void *, unsigned int);
typedef xfs_fsize_t	(*xfs_size_t)(void *);
typedef xfs_fsize_t	(*xfs_iodone_t)(struct vfs *);

typedef struct xfs_ioops {
	xfs_ioinit_t			xfs_ioinit;
	xfs_bmapi_t			xfs_bmapi_func;
	xfs_bmap_eof_t			xfs_bmap_eof_func;
	xfs_iomap_write_direct_t	xfs_iomap_write_direct;
	xfs_iomap_write_delay_t		xfs_iomap_write_delay;
	xfs_iomap_write_allocate_t	xfs_iomap_write_allocate;
	xfs_iomap_write_unwritten_t	xfs_iomap_write_unwritten;
	xfs_lock_t			xfs_ilock;
	xfs_lck_map_shared_t		xfs_lck_map_shared;
	xfs_lock_demote_t		xfs_ilock_demote;
	xfs_lock_nowait_t		xfs_ilock_nowait;
	xfs_unlk_t			xfs_unlock;
	xfs_size_t			xfs_size_func;
	xfs_iodone_t			xfs_iodone;
} xfs_ioops_t;

#define XFS_IOINIT(vfsp, args, flags) \
	(*(mp)->m_io_ops.xfs_ioinit)(vfsp, args, flags)
#define XFS_BMAPI(mp, trans,io,bno,len,f,first,tot,mval,nmap,flist)	\
	(*(mp)->m_io_ops.xfs_bmapi_func) \
		(trans,(io)->io_obj,bno,len,f,first,tot,mval,nmap,flist)
#define XFS_BMAP_EOF(mp, io, endoff, whichfork, eof) \
	(*(mp)->m_io_ops.xfs_bmap_eof_func) \
		((io)->io_obj, endoff, whichfork, eof)
#define XFS_IOMAP_WRITE_DIRECT(mp, io, offset, count, flags, mval, nmap, found)\
	(*(mp)->m_io_ops.xfs_iomap_write_direct) \
		((io)->io_obj, offset, count, flags, mval, nmap, found)
#define XFS_IOMAP_WRITE_DELAY(mp, io, offset, count, flags, mval, nmap) \
	(*(mp)->m_io_ops.xfs_iomap_write_delay) \
		((io)->io_obj, offset, count, flags, mval, nmap)
#define XFS_IOMAP_WRITE_ALLOCATE(mp, io, mval, nmap) \
	(*(mp)->m_io_ops.xfs_iomap_write_allocate) \
		((io)->io_obj, mval, nmap)
#define XFS_IOMAP_WRITE_UNWRITTEN(mp, io, offset, count) \
	(*(mp)->m_io_ops.xfs_iomap_write_unwritten) \
		((io)->io_obj, offset, count)
#define XFS_LCK_MAP_SHARED(mp, io) \
	(*(mp)->m_io_ops.xfs_lck_map_shared)((io)->io_obj)
#define XFS_ILOCK(mp, io, mode) \
	(*(mp)->m_io_ops.xfs_ilock)((io)->io_obj, mode)
#define XFS_ILOCK_NOWAIT(mp, io, mode) \
	(*(mp)->m_io_ops.xfs_ilock_nowait)((io)->io_obj, mode)
#define XFS_IUNLOCK(mp, io, mode) \
	(*(mp)->m_io_ops.xfs_unlock)((io)->io_obj, mode)
#define XFS_ILOCK_DEMOTE(mp, io, mode) \
	(*(mp)->m_io_ops.xfs_ilock_demote)((io)->io_obj, mode)
#define XFS_SIZE(mp, io) \
	(*(mp)->m_io_ops.xfs_size_func)((io)->io_obj)
#define XFS_IODONE(vfsp) \
	(*(mp)->m_io_ops.xfs_iodone)(vfsp)


typedef struct xfs_mount {
	bhv_desc_t		m_bhv;		/* vfs xfs behavior */
	xfs_tid_t		m_tid;		/* next unused tid for fs */
	AIL_LOCK_T		m_ail_lock;	/* fs AIL mutex */
	xfs_ail_entry_t		m_ail;		/* fs active log item list */
	uint			m_ail_gen;	/* fs AIL generation count */
	xfs_sb_t		m_sb;		/* copy of fs superblock */
	lock_t			m_sb_lock;	/* sb counter mutex */
	struct xfs_buf		*m_sb_bp;	/* buffer for superblock */
	char			*m_fsname;	/* filesystem name */
	int			m_fsname_len;	/* strlen of fs name */
	int			m_bsize;	/* fs logical block size */
	xfs_agnumber_t		m_agfrotor;	/* last ag where space found */
	xfs_agnumber_t		m_agirotor;	/* last ag dir inode alloced */
	xfs_agnumber_t		m_maxagi;	/* highest inode alloc group */
	int			m_ihsize;	/* size of next field */
	struct xfs_ihash	*m_ihash;	/* fs private inode hash table*/
	struct xfs_inode	*m_inodes;	/* active inode list */
	mutex_t			m_ilock;	/* inode list mutex */
	uint			m_ireclaims;	/* count of calls to reclaim*/
	uint			m_readio_log;	/* min read size log bytes */
	uint			m_readio_blocks; /* min read size blocks */
	uint			m_writeio_log;	/* min write size log bytes */
	uint			m_writeio_blocks; /* min write size blocks */
	void			*m_log;		/* log specific stuff */
	int			m_logbufs;	/* number of log buffers */
	int			m_logbsize;	/* size of each log buffer */
	uint			m_rsumlevels;	/* rt summary levels */
	uint			m_rsumsize;	/* size of rt summary, bytes */
	struct xfs_inode	*m_rbmip;	/* pointer to bitmap inode */
	struct xfs_inode	*m_rsumip;	/* pointer to summary inode */
	struct xfs_inode	*m_rootip;	/* pointer to root directory */
	struct xfs_quotainfo	*m_quotainfo;	/* disk quota information */
	xfs_buftarg_t		*m_ddev_targp;	/* saves taking the address */
	xfs_buftarg_t		*m_logdev_targp;/* ptr to log device */
	xfs_buftarg_t		*m_rtdev_targp;	/* ptr to rt device */
#define m_dev		m_ddev_targp->pbr_dev
#define m_logdev	m_logdev_targp->pbr_dev
#define m_rtdev		m_rtdev_targp->pbr_dev
	__uint8_t		m_dircook_elog; /* log d-cookie entry bits */
	__uint8_t		m_blkbit_log;	/* blocklog + NBBY */
	__uint8_t		m_blkbb_log;	/* blocklog - BBSHIFT */
	__uint8_t		m_agno_log;	/* log #ag's */
	__uint8_t		m_agino_log;	/* #bits for agino in inum */
	__uint8_t		m_nreadaheads;	/* #readahead buffers */
	__uint16_t		m_inode_cluster_size;/* min inode buf size */
	uint			m_blockmask;	/* sb_blocksize-1 */
	uint			m_blockwsize;	/* sb_blocksize in words */
	uint			m_blockwmask;	/* blockwsize-1 */
	uint			m_alloc_mxr[2]; /* XFS_ALLOC_BLOCK_MAXRECS */
	uint			m_alloc_mnr[2]; /* XFS_ALLOC_BLOCK_MINRECS */
	uint			m_bmap_dmxr[2]; /* XFS_BMAP_BLOCK_DMAXRECS */
	uint			m_bmap_dmnr[2]; /* XFS_BMAP_BLOCK_DMINRECS */
	uint			m_inobt_mxr[2]; /* XFS_INOBT_BLOCK_MAXRECS */
	uint			m_inobt_mnr[2]; /* XFS_INOBT_BLOCK_MINRECS */
	uint			m_ag_maxlevels; /* XFS_AG_MAXLEVELS */
	uint			m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */
	uint			m_in_maxlevels; /* XFS_IN_MAXLEVELS */
	struct xfs_perag	*m_perag;	/* per-ag accounting info */
	struct rw_semaphore	m_peraglock;	/* lock for m_perag (pointer) */
	sema_t			m_growlock;	/* growfs mutex */
	int			m_fixedfsid[2]; /* unchanged for life of FS */
	uint			m_dmevmask;	/* DMI events for this FS */
	uint			m_flags;	/* global mount flags */
	uint			m_attroffset;	/* inode attribute offset */
	uint			m_dir_node_ents; /* #entries in a dir danode */
	uint			m_attr_node_ents; /* #entries in attr danode */
	int			m_ialloc_inos;	/* inodes in inode allocation */
	int			m_ialloc_blks;	/* blocks in inode allocation */
	int			m_litino;	/* size of inode union area */
	int			m_inoalign_mask;/* mask sb_inoalignmt if used */
	uint			m_qflags;	/* quota status flags */
	xfs_trans_reservations_t m_reservations;/* precomputed res values */
	__uint64_t		m_maxicount;	/* maximum inode count */
	__uint64_t		m_resblks;	/* total reserved blocks */
	__uint64_t		m_resblks_avail;/* available reserved blocks */
#if XFS_BIG_FILESYSTEMS
	xfs_ino_t		m_inoadd;	/* add value for ino64_offset */
#endif
	int			m_dalign;	/* stripe unit */
	int			m_swidth;	/* stripe width */
	int			m_lstripemask;	/* log stripe mask */
	int			m_sinoalign;	/* stripe unit inode alignmnt */
	int			m_attr_magicpct;/* 37% of the blocksize */
	int			m_dir_magicpct; /* 37% of the dir blocksize */
	__uint8_t		m_mk_sharedro;	/* mark shared ro on unmount */
	__uint8_t		m_inode_quiesce;/* call quiesce on new inodes.
						   field governed by m_ilock */
	__uint8_t		m_sectbb_log;	/* sectlog - BBSHIFT */
	__uint8_t		m_dirversion;	/* 1 or 2 */
	xfs_dirops_t		m_dirops;	/* table of dir funcs */
	int			m_dirblksize;	/* directory block sz--bytes */
	int			m_dirblkfsbs;	/* directory block sz--fsbs */
	xfs_dablk_t		m_dirdatablk;	/* blockno of dir data v2 */
	xfs_dablk_t		m_dirleafblk;	/* blockno of dir non-data v2 */
	xfs_dablk_t		m_dirfreeblk;	/* blockno of dirfreeindex v2 */
	int			m_chsize;	/* size of next field */
	struct xfs_chash	*m_chash;	/* fs private inode per-cluster
						 * hash table */
	struct xfs_dmops	m_dm_ops;	/* vector of DMI ops */
	struct xfs_qmops	m_qm_ops;	/* vector of XQM ops */
	struct xfs_ioops	m_io_ops;	/* vector of I/O ops */
	lock_t			m_freeze_lock;	/* Lock for m_frozen */
	uint			m_frozen;	/* FS frozen for shutdown or
						 * snapshot */
	sv_t			m_wait_unfreeze;/* waiting to unfreeze */
	atomic_t		m_active_trans; /* number trans frozen */
	struct timer_list	m_sbdirty_timer;/* superblock dirty timer
						 * for nfs refcache */
} xfs_mount_t;

/*
 * Flags for m_flags.
 */
#define XFS_MOUNT_WSYNC		0x00000001	/* for nfs - all metadata ops
						   must be synchronous except
						   for space allocations */
#if XFS_BIG_FILESYSTEMS
#define XFS_MOUNT_INO64		0x00000002
#endif
			     /* 0x00000004	-- currently unused */
			     /* 0x00000008	-- currently unused */
#define XFS_MOUNT_FS_SHUTDOWN	0x00000010	/* atomic stop of all filesystem
						   operations, typically for
						   disk errors in metadata */
#define XFS_MOUNT_NOATIME	0x00000020	/* don't modify inode access
						   times on reads */
#define XFS_MOUNT_RETERR	0x00000040	/* return alignment errors to
						   user */
#define XFS_MOUNT_NOALIGN	0x00000080	/* turn off stripe alignment
						   allocations */
			     /* 0x00000100	-- currently unused */
                             /*	0x00000200	-- currently unused */
#define XFS_MOUNT_NORECOVERY	0x00000400	/* no recovery - dirty fs */
#define XFS_MOUNT_SHARED	0x00000800	/* shared mount */
#define XFS_MOUNT_DFLT_IOSIZE	0x00001000	/* set default i/o size */
#define XFS_MOUNT_OSYNCISOSYNC	0x00002000	/* o_sync is REALLY o_sync */
						/* osyncisdsync is now default*/
#define XFS_MOUNT_NOUUID	0x00004000	/* ignore uuid during mount */
#define XFS_MOUNT_32BITINODES	0x00008000	/* do not create inodes above
						 * 32 bits in size */
#define XFS_MOUNT_NOLOGFLUSH	0x00010000

#define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN)

/*
 * Default minimum read and write sizes.
 */
#define XFS_READIO_LOG_LARGE	16
#define XFS_WRITEIO_LOG_LARGE	16
/*
 * Default allocation size
 */
#define XFS_WRITE_IO_LOG	16

/*
 * Max and min values for UIO and mount-option defined I/O sizes;
 * min value can't be less than a page.	 Currently unused.
 */
#define XFS_MAX_IO_LOG		16	/* 64K */
#define XFS_MIN_IO_LOG		PAGE_SHIFT

/*
 * Synchronous read and write sizes.  This should be
 * better for NFSv2 wsync filesystems.
 */
#define XFS_WSYNC_READIO_LOG	15	/* 32K */
#define XFS_WSYNC_WRITEIO_LOG	14	/* 16K */

#define xfs_force_shutdown(m,f)	\
	VFS_FORCE_SHUTDOWN((XFS_MTOVFS(m)), f, __FILE__, __LINE__)

/*
 * Flags sent to xfs_force_shutdown.
 */
#define XFS_METADATA_IO_ERROR	0x1
#define XFS_LOG_IO_ERROR	0x2
#define XFS_FORCE_UMOUNT	0x4
#define XFS_CORRUPT_INCORE	0x8	/* Corrupt in-memory data structures */
#define XFS_SHUTDOWN_REMOTE_REQ 0x10	/* Shutdown came from remote cell */

/*
 * xflags for xfs_syncsub
 */
#define XFS_XSYNC_RELOC		0x01

/*
 * Flags for xfs_mountfs
 */
#define XFS_MFSI_SECOND		0x01	/* Secondary mount -- skip stuff */
#define XFS_MFSI_CLIENT		0x02	/* Is a client -- skip lots of stuff */
#define XFS_MFSI_NOUNLINK	0x08	/* Skip unlinked inode processing in */
					/* log recovery */

/*
 * Macros for getting from mount to vfs and back.
 */
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_MTOVFS)
struct vfs *xfs_mtovfs(xfs_mount_t *mp);
#define XFS_MTOVFS(mp)		xfs_mtovfs(mp)
#else
#define XFS_MTOVFS(mp)		(bhvtovfs(&(mp)->m_bhv))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BHVTOM)
xfs_mount_t *xfs_bhvtom(bhv_desc_t *bdp);
#define XFS_BHVTOM(bdp) xfs_bhvtom(bdp)
#else
#define XFS_BHVTOM(bdp)		((xfs_mount_t *)BHV_PDATA(bdp))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_VFSTOM)
xfs_mount_t *xfs_vfstom(vfs_t *vfs);
#define XFS_VFSTOM(vfs) xfs_vfstom(vfs)
#else
#define XFS_VFSTOM(vfs)		\
	(XFS_BHVTOM(bhv_lookup(VFS_BHVHEAD(vfs), &xfs_vfsops)))
#endif


/*
 * Moved here from xfs_ag.h to avoid reordering header files
 */

#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DADDR_TO_AGNO)
xfs_agnumber_t xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d);
#define XFS_DADDR_TO_AGNO(mp,d)		xfs_daddr_to_agno(mp,d)
#else

static inline xfs_agnumber_t XFS_DADDR_TO_AGNO(xfs_mount_t *mp, xfs_daddr_t d)
{
	d = XFS_BB_TO_FSBT(mp, d);
	do_div(d, mp->m_sb.sb_agblocks);
	return (xfs_agnumber_t) d;
}

#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DADDR_TO_AGBNO)
xfs_agblock_t xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d);
#define XFS_DADDR_TO_AGBNO(mp,d)	xfs_daddr_to_agbno(mp,d)
#else

static inline xfs_agblock_t XFS_DADDR_TO_AGBNO(xfs_mount_t *mp, xfs_daddr_t d)
{
	d = XFS_BB_TO_FSBT(mp, d);
	return (xfs_agblock_t) do_div(d, mp->m_sb.sb_agblocks);
}

#endif

/*
 * This structure is for use by the xfs_mod_incore_sb_batch() routine.
 */
typedef struct xfs_mod_sb {
	xfs_sb_field_t	msb_field;	/* Field to modify, see below */
	int		msb_delta;	/* Change to make to specified field */
} xfs_mod_sb_t;

#define XFS_MOUNT_ILOCK(mp)	mutex_lock(&((mp)->m_ilock), PINOD)
#define XFS_MOUNT_IUNLOCK(mp)	mutex_unlock(&((mp)->m_ilock))
#define XFS_SB_LOCK(mp)		mutex_spinlock(&(mp)->m_sb_lock)
#define XFS_SB_UNLOCK(mp,s)	mutex_spinunlock(&(mp)->m_sb_lock,(s))

extern xfs_mount_t *xfs_mount_init(void);
extern void	xfs_mod_sb(xfs_trans_t *, __int64_t);
extern void	xfs_mount_free(xfs_mount_t *mp, int remove_bhv);
extern int	xfs_mountfs(struct vfs *, xfs_mount_t *mp, dev_t, int);

extern int	xfs_unmountfs(xfs_mount_t *, struct cred *);
extern void	xfs_uuid_unmount(xfs_mount_t *mp);
extern void	xfs_unmountfs_close(xfs_mount_t *, struct cred *);
extern int	xfs_unmountfs_writesb(xfs_mount_t *);
extern int	xfs_unmount_flush(xfs_mount_t *, int);
extern int	xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int, int);
extern int	xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *,
			uint, int);
extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int);
extern int	xfs_readsb(xfs_mount_t *mp);
extern void	xfs_freesb(xfs_mount_t *);
extern void	xfs_do_force_shutdown(bhv_desc_t *, int, char *, int);
extern int	xfs_syncsub(xfs_mount_t *, int, int, int *);
extern void	xfs_initialize_perag(xfs_mount_t *, int);
extern void	xfs_xlatesb(void *, struct xfs_sb *, int, xfs_arch_t,
			__int64_t);

/*
 * Flags for freeze operations.
 */
#define XFS_FREEZE_WRITE	1
#define XFS_FREEZE_TRANS	2

extern void	xfs_start_freeze(xfs_mount_t *, int);
extern void	xfs_finish_freeze(xfs_mount_t *);
extern void	xfs_check_frozen(xfs_mount_t *, bhv_desc_t *, int);

extern struct vfsops xfs_vfsops;
extern struct vnodeops xfs_vnodeops;

extern struct xfs_dmops xfs_dmcore_xfs;
extern struct xfs_qmops xfs_qmcore_xfs;
extern struct xfs_ioops xfs_iocore_xfs;

extern int 	xfs_init(void);
extern void	xfs_cleanup(void);

#endif	/* __KERNEL__ */

#endif	/* __XFS_MOUNT_H__ */