fs/xfs/xfs_ialloc_btree.h - kernel/msm - Gitiles

 /*
  * Copyright (c) 2000 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_IALLOC_BTREE_H__
 #define	__XFS_IALLOC_BTREE_H__

 /*
  * Inode map on-disk structures
  */

 struct xfs_buf;
 struct xfs_btree_cur;
 struct xfs_btree_sblock;
 struct xfs_mount;

 /*
  * There is a btree for the inode map per allocation group.
  */
 #define	XFS_IBT_MAGIC	0x49414254	/* 'IABT' */

 typedef	__uint64_t	xfs_inofree_t;
 #define	XFS_INODES_PER_CHUNK	(NBBY * sizeof(xfs_inofree_t))
 #define	XFS_INODES_PER_CHUNK_LOG	(XFS_NBBYLOG + 3)
 #define	XFS_INOBT_ALL_FREE	((xfs_inofree_t)-1)

 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INOBT_MASKN)
 xfs_inofree_t xfs_inobt_maskn(int i, int n);
 #define	XFS_INOBT_MASKN(i,n)		xfs_inobt_maskn(i,n)
 #else
 #define	XFS_INOBT_MASKN(i,n)	\
 	((((n) >= XFS_INODES_PER_CHUNK ? \
 		(xfs_inofree_t)0 : ((xfs_inofree_t)1 << (n))) - 1) << (i))
 #endif

 /*
  * Data record structure
  */
 typedef struct xfs_inobt_rec
 {
 	xfs_agino_t	ir_startino;	/* starting inode number */
 	__int32_t	ir_freecount;	/* count of free inodes (set bits) */
 	xfs_inofree_t	ir_free;	/* free inode mask */
 } xfs_inobt_rec_t;

 /*
  * Key structure
  */
 typedef struct xfs_inobt_key
 {
 	xfs_agino_t	ir_startino;	/* starting inode number */
 } xfs_inobt_key_t;

 typedef xfs_agblock_t xfs_inobt_ptr_t;	/* btree pointer type */
 					/* btree block header type */
 typedef	struct xfs_btree_sblock xfs_inobt_block_t;

 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BUF_TO_INOBT_BLOCK)
 xfs_inobt_block_t *xfs_buf_to_inobt_block(struct xfs_buf *bp);
 #define	XFS_BUF_TO_INOBT_BLOCK(bp)	xfs_buf_to_inobt_block(bp)
 #else
 #define	XFS_BUF_TO_INOBT_BLOCK(bp) ((xfs_inobt_block_t *)(XFS_BUF_PTR(bp)))
 #endif

 /*
  * Bit manipulations for ir_free.
  */
 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INOBT_MASK)
 xfs_inofree_t xfs_inobt_mask(int i);
 #define	XFS_INOBT_MASK(i)		xfs_inobt_mask(i)
 #else
 #define	XFS_INOBT_MASK(i)		((xfs_inofree_t)1 << (i))
 #endif
 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INOBT_IS_FREE)
 int xfs_inobt_is_free(xfs_inobt_rec_t *rp, int i);
 #define	XFS_INOBT_IS_FREE(rp,i)	xfs_inobt_is_free(rp,i)
 #else
 #define	XFS_INOBT_IS_FREE(rp,i)	(((rp)->ir_free & XFS_INOBT_MASK(i)) != 0)
 #endif
 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INOBT_SET_FREE)
 void xfs_inobt_set_free(xfs_inobt_rec_t *rp, int i);
 #define	XFS_INOBT_SET_FREE(rp,i)	xfs_inobt_set_free(rp,i)
 #else
 #define	XFS_INOBT_SET_FREE(rp,i)	((rp)->ir_free |= XFS_INOBT_MASK(i))
 #endif
 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INOBT_CLR_FREE)
 void xfs_inobt_clr_free(xfs_inobt_rec_t *rp, int i);
 #define	XFS_INOBT_CLR_FREE(rp,i)	xfs_inobt_clr_free(rp,i)
 #else
 #define	XFS_INOBT_CLR_FREE(rp,i)	((rp)->ir_free &= ~XFS_INOBT_MASK(i))
 #endif

 /*
  * Real block structures have a size equal to the disk block size.
  */
 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INOBT_BLOCK_SIZE)
 int xfs_inobt_block_size(int lev, struct xfs_btree_cur *cur);
 #define	XFS_INOBT_BLOCK_SIZE(lev,cur)	xfs_inobt_block_size(lev,cur)
 #else
 #define	XFS_INOBT_BLOCK_SIZE(lev,cur)	(1 << (cur)->bc_blocklog)
 #endif

 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INOBT_BLOCK_MAXRECS)
 int xfs_inobt_block_maxrecs(int lev, struct xfs_btree_cur *cur);
 #define	XFS_INOBT_BLOCK_MAXRECS(lev,cur)	xfs_inobt_block_maxrecs(lev,cur)
 #else
 #define	XFS_INOBT_BLOCK_MAXRECS(lev,cur)	\
 	((cur)->bc_mp->m_inobt_mxr[lev != 0])
 #endif
 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INOBT_BLOCK_MINRECS)
 int xfs_inobt_block_minrecs(int lev, struct xfs_btree_cur *cur);
 #define	XFS_INOBT_BLOCK_MINRECS(lev,cur)	xfs_inobt_block_minrecs(lev,cur)
 #else
 #define	XFS_INOBT_BLOCK_MINRECS(lev,cur)	\
 	((cur)->bc_mp->m_inobt_mnr[lev != 0])
 #endif

 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INOBT_IS_LAST_REC)
 int xfs_inobt_is_last_rec(struct xfs_btree_cur *cur);
 #define	XFS_INOBT_IS_LAST_REC(cur)	xfs_inobt_is_last_rec(cur)
 #else
 #define	XFS_INOBT_IS_LAST_REC(cur)	\
 	((cur)->bc_ptrs[0] == \
 		INT_GET(XFS_BUF_TO_INOBT_BLOCK((cur)->bc_bufs[0])->bb_numrecs, ARCH_CONVERT))
 #endif

 /*
  * Maximum number of inode btree levels.
  */
 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IN_MAXLEVELS)
 int xfs_in_maxlevels(struct xfs_mount *mp);
 #define	XFS_IN_MAXLEVELS(mp)		xfs_in_maxlevels(mp)
 #else
 #define	XFS_IN_MAXLEVELS(mp)		((mp)->m_in_maxlevels)
 #endif

 /*
  * block numbers in the AG.
  */
 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IBT_BLOCK)
 xfs_agblock_t xfs_ibt_block(struct xfs_mount *mp);
 #define	XFS_IBT_BLOCK(mp)		xfs_ibt_block(mp)
 #else
 #define	XFS_IBT_BLOCK(mp)	((xfs_agblock_t)(XFS_CNT_BLOCK(mp) + 1))
 #endif
 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_PREALLOC_BLOCKS)
 xfs_agblock_t xfs_prealloc_blocks(struct xfs_mount *mp);
 #define	XFS_PREALLOC_BLOCKS(mp)		xfs_prealloc_blocks(mp)
 #else
 #define	XFS_PREALLOC_BLOCKS(mp)	((xfs_agblock_t)(XFS_IBT_BLOCK(mp) + 1))
 #endif

 /*
  * Record, key, and pointer address macros for btree blocks.
  */
 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INOBT_REC_ADDR)
 xfs_inobt_rec_t *
 xfs_inobt_rec_addr(xfs_inobt_block_t *bb, int i, struct xfs_btree_cur *cur);
 #define	XFS_INOBT_REC_ADDR(bb,i,cur)	xfs_inobt_rec_addr(bb,i,cur)
 #else
 #define	XFS_INOBT_REC_ADDR(bb,i,cur)	\
 	XFS_BTREE_REC_ADDR(XFS_INOBT_BLOCK_SIZE(0,cur), xfs_inobt, bb, i, \
 		XFS_INOBT_BLOCK_MAXRECS(0, cur))
 #endif

 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INOBT_KEY_ADDR)
 xfs_inobt_key_t *
 xfs_inobt_key_addr(xfs_inobt_block_t *bb, int i, struct xfs_btree_cur *cur);
 #define	XFS_INOBT_KEY_ADDR(bb,i,cur)	xfs_inobt_key_addr(bb,i,cur)
 #else
 #define	XFS_INOBT_KEY_ADDR(bb,i,cur)	\
 	XFS_BTREE_KEY_ADDR(XFS_INOBT_BLOCK_SIZE(1,cur), xfs_inobt, bb, i, \
 		XFS_INOBT_BLOCK_MAXRECS(1, cur))
 #endif

 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INOBT_PTR_ADDR)
 xfs_inobt_ptr_t *
 xfs_inobt_ptr_addr(xfs_inobt_block_t *bb, int i, struct xfs_btree_cur *cur);
 #define	XFS_INOBT_PTR_ADDR(bb,i,cur)	xfs_inobt_ptr_addr(bb,i,cur)
 #else
 #define	XFS_INOBT_PTR_ADDR(bb,i,cur)	\
 	XFS_BTREE_PTR_ADDR(XFS_INOBT_BLOCK_SIZE(1,cur), xfs_inobt, bb, i, \
 		XFS_INOBT_BLOCK_MAXRECS(1, cur))
 #endif

 /*
  * Prototypes for externally visible routines.
  */

 /*
  * Decrement cursor by one record at the level.
  * For nonzero levels the leaf-ward information is untouched.
  */
 int					/* error */
 xfs_inobt_decrement(
 	struct xfs_btree_cur	*cur,	/* btree cursor */
 	int			level,	/* level in btree, 0 is leaf */
 	int			*stat); /* success/failure */

 /*
  * Delete the record pointed to by cur.
  * The cursor refers to the place where the record was (could be inserted)
  * when the operation returns.
  */
 int					/* error */
 xfs_inobt_delete(
 	struct xfs_btree_cur	*cur,	/* btree cursor */
 	int			*stat);	/* success/failure */

 /*
  * Get the data from the pointed-to record.
  */
 int					/* error */
 xfs_inobt_get_rec(
 	struct xfs_btree_cur	*cur,	/* btree cursor */
 	xfs_agino_t		*ino,	/* output: starting inode of chunk */
 	__int32_t		*fcnt,	/* output: number of free inodes */
 	xfs_inofree_t		*free,	/* output: free inode mask */
 	int			*stat);	/* output: success/failure */

 /*
  * Increment cursor by one record at the level.
  * For nonzero levels the leaf-ward information is untouched.
  */
 int					/* error */
 xfs_inobt_increment(
 	struct xfs_btree_cur	*cur,	/* btree cursor */
 	int			level,	/* level in btree, 0 is leaf */
 	int			*stat);	/* success/failure */

 /*
  * Insert the current record at the point referenced by cur.
  * The cursor may be inconsistent on return if splits have been done.
  */
 int					/* error */
 xfs_inobt_insert(
 	struct xfs_btree_cur	*cur,	/* btree cursor */
 	int			*stat);	/* success/failure */

 /*
  * Lookup the record equal to ino in the btree given by cur.
  */
 int					/* error */
 xfs_inobt_lookup_eq(
 	struct xfs_btree_cur	*cur,	/* btree cursor */
 	xfs_agino_t		ino,	/* starting inode of chunk */
 	__int32_t		fcnt,	/* free inode count */
 	xfs_inofree_t		free,	/* free inode mask */
 	int			*stat);	/* success/failure */

 /*
  * Lookup the first record greater than or equal to ino
  * in the btree given by cur.
  */
 int					/* error */
 xfs_inobt_lookup_ge(
 	struct xfs_btree_cur	*cur,	/* btree cursor */
 	xfs_agino_t		ino,	/* starting inode of chunk */
 	__int32_t		fcnt,	/* free inode count */
 	xfs_inofree_t		free,	/* free inode mask */
 	int			*stat);	/* success/failure */

 /*
  * Lookup the first record less than or equal to ino
  * in the btree given by cur.
  */
 int					/* error */
 xfs_inobt_lookup_le(
 	struct xfs_btree_cur	*cur,	/* btree cursor */
 	xfs_agino_t		ino,	/* starting inode of chunk */
 	__int32_t		fcnt,	/* free inode count */
 	xfs_inofree_t		free,	/* free inode mask */
 	int			*stat);	/* success/failure */

 /*
  * Update the record referred to by cur, to the value given
  * by [ino, fcnt, free].
  * This either works (return 0) or gets an EFSCORRUPTED error.
  */
 int					/* error */
 xfs_inobt_update(
 	struct xfs_btree_cur	*cur,	/* btree cursor */
 	xfs_agino_t		ino,	/* starting inode of chunk */
 	__int32_t		fcnt,	/* free inode count */
 	xfs_inofree_t		free);	/* free inode mask */

 #endif	/* __XFS_IALLOC_BTREE_H__ */
	/*
	* Copyright (c) 2000 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_IALLOC_BTREE_H__
	#define __XFS_IALLOC_BTREE_H__

	/*
	* Inode map on-disk structures
	*/

	struct xfs_buf;
	struct xfs_btree_cur;
	struct xfs_btree_sblock;
	struct xfs_mount;

	/*
	* There is a btree for the inode map per allocation group.
	*/
	#define XFS_IBT_MAGIC 0x49414254 /* 'IABT' */

	typedef __uint64_t xfs_inofree_t;
	#define XFS_INODES_PER_CHUNK (NBBY * sizeof(xfs_inofree_t))
	#define XFS_INODES_PER_CHUNK_LOG (XFS_NBBYLOG + 3)
	#define XFS_INOBT_ALL_FREE ((xfs_inofree_t)-1)

	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_INOBT_MASKN)
	xfs_inofree_t xfs_inobt_maskn(int i, int n);
	#define XFS_INOBT_MASKN(i,n) xfs_inobt_maskn(i,n)
	#else
	#define XFS_INOBT_MASKN(i,n) \
	((((n) >= XFS_INODES_PER_CHUNK ? \
	(xfs_inofree_t)0 : ((xfs_inofree_t)1 << (n))) - 1) << (i))
	#endif

	/*
	* Data record structure
	*/
	typedef struct xfs_inobt_rec
	{
	xfs_agino_t ir_startino; /* starting inode number */
	__int32_t ir_freecount; /* count of free inodes (set bits) */
	xfs_inofree_t ir_free; /* free inode mask */
	} xfs_inobt_rec_t;

	/*
	* Key structure
	*/
	typedef struct xfs_inobt_key
	{
	xfs_agino_t ir_startino; /* starting inode number */
	} xfs_inobt_key_t;

	typedef xfs_agblock_t xfs_inobt_ptr_t; /* btree pointer type */
	/* btree block header type */
	typedef struct xfs_btree_sblock xfs_inobt_block_t;

	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_BUF_TO_INOBT_BLOCK)
	xfs_inobt_block_t xfs_buf_to_inobt_block(struct xfs_buf bp);
	#define XFS_BUF_TO_INOBT_BLOCK(bp) xfs_buf_to_inobt_block(bp)
	#else
	#define XFS_BUF_TO_INOBT_BLOCK(bp) ((xfs_inobt_block_t *)(XFS_BUF_PTR(bp)))
	#endif

	/*
	* Bit manipulations for ir_free.
	*/
	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_INOBT_MASK)
	xfs_inofree_t xfs_inobt_mask(int i);
	#define XFS_INOBT_MASK(i) xfs_inobt_mask(i)
	#else
	#define XFS_INOBT_MASK(i) ((xfs_inofree_t)1 << (i))
	#endif
	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_INOBT_IS_FREE)
	int xfs_inobt_is_free(xfs_inobt_rec_t *rp, int i);
	#define XFS_INOBT_IS_FREE(rp,i) xfs_inobt_is_free(rp,i)
	#else
	#define XFS_INOBT_IS_FREE(rp,i) (((rp)->ir_free & XFS_INOBT_MASK(i)) != 0)
	#endif
	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_INOBT_SET_FREE)
	void xfs_inobt_set_free(xfs_inobt_rec_t *rp, int i);
	#define XFS_INOBT_SET_FREE(rp,i) xfs_inobt_set_free(rp,i)
	#else
	#define XFS_INOBT_SET_FREE(rp,i) ((rp)->ir_free \|= XFS_INOBT_MASK(i))
	#endif
	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_INOBT_CLR_FREE)
	void xfs_inobt_clr_free(xfs_inobt_rec_t *rp, int i);
	#define XFS_INOBT_CLR_FREE(rp,i) xfs_inobt_clr_free(rp,i)
	#else
	#define XFS_INOBT_CLR_FREE(rp,i) ((rp)->ir_free &= ~XFS_INOBT_MASK(i))
	#endif

	/*
	* Real block structures have a size equal to the disk block size.
	*/
	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_INOBT_BLOCK_SIZE)
	int xfs_inobt_block_size(int lev, struct xfs_btree_cur *cur);
	#define XFS_INOBT_BLOCK_SIZE(lev,cur) xfs_inobt_block_size(lev,cur)
	#else
	#define XFS_INOBT_BLOCK_SIZE(lev,cur) (1 << (cur)->bc_blocklog)
	#endif

	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_INOBT_BLOCK_MAXRECS)
	int xfs_inobt_block_maxrecs(int lev, struct xfs_btree_cur *cur);
	#define XFS_INOBT_BLOCK_MAXRECS(lev,cur) xfs_inobt_block_maxrecs(lev,cur)
	#else
	#define XFS_INOBT_BLOCK_MAXRECS(lev,cur) \
	((cur)->bc_mp->m_inobt_mxr[lev != 0])
	#endif
	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_INOBT_BLOCK_MINRECS)
	int xfs_inobt_block_minrecs(int lev, struct xfs_btree_cur *cur);
	#define XFS_INOBT_BLOCK_MINRECS(lev,cur) xfs_inobt_block_minrecs(lev,cur)
	#else
	#define XFS_INOBT_BLOCK_MINRECS(lev,cur) \
	((cur)->bc_mp->m_inobt_mnr[lev != 0])
	#endif

	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_INOBT_IS_LAST_REC)
	int xfs_inobt_is_last_rec(struct xfs_btree_cur *cur);
	#define XFS_INOBT_IS_LAST_REC(cur) xfs_inobt_is_last_rec(cur)
	#else
	#define XFS_INOBT_IS_LAST_REC(cur) \
	((cur)->bc_ptrs[0] == \
	INT_GET(XFS_BUF_TO_INOBT_BLOCK((cur)->bc_bufs[0])->bb_numrecs, ARCH_CONVERT))
	#endif

	/*
	* Maximum number of inode btree levels.
	*/
	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_IN_MAXLEVELS)
	int xfs_in_maxlevels(struct xfs_mount *mp);
	#define XFS_IN_MAXLEVELS(mp) xfs_in_maxlevels(mp)
	#else
	#define XFS_IN_MAXLEVELS(mp) ((mp)->m_in_maxlevels)
	#endif

	/*
	* block numbers in the AG.
	*/
	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_IBT_BLOCK)
	xfs_agblock_t xfs_ibt_block(struct xfs_mount *mp);
	#define XFS_IBT_BLOCK(mp) xfs_ibt_block(mp)
	#else
	#define XFS_IBT_BLOCK(mp) ((xfs_agblock_t)(XFS_CNT_BLOCK(mp) + 1))
	#endif
	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_PREALLOC_BLOCKS)
	xfs_agblock_t xfs_prealloc_blocks(struct xfs_mount *mp);
	#define XFS_PREALLOC_BLOCKS(mp) xfs_prealloc_blocks(mp)
	#else
	#define XFS_PREALLOC_BLOCKS(mp) ((xfs_agblock_t)(XFS_IBT_BLOCK(mp) + 1))
	#endif

	/*
	* Record, key, and pointer address macros for btree blocks.
	*/
	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_INOBT_REC_ADDR)
	xfs_inobt_rec_t *
	xfs_inobt_rec_addr(xfs_inobt_block_t bb, int i, struct xfs_btree_cur cur);
	#define XFS_INOBT_REC_ADDR(bb,i,cur) xfs_inobt_rec_addr(bb,i,cur)
	#else
	#define XFS_INOBT_REC_ADDR(bb,i,cur) \
	XFS_BTREE_REC_ADDR(XFS_INOBT_BLOCK_SIZE(0,cur), xfs_inobt, bb, i, \
	XFS_INOBT_BLOCK_MAXRECS(0, cur))
	#endif

	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_INOBT_KEY_ADDR)
	xfs_inobt_key_t *
	xfs_inobt_key_addr(xfs_inobt_block_t bb, int i, struct xfs_btree_cur cur);
	#define XFS_INOBT_KEY_ADDR(bb,i,cur) xfs_inobt_key_addr(bb,i,cur)
	#else
	#define XFS_INOBT_KEY_ADDR(bb,i,cur) \
	XFS_BTREE_KEY_ADDR(XFS_INOBT_BLOCK_SIZE(1,cur), xfs_inobt, bb, i, \
	XFS_INOBT_BLOCK_MAXRECS(1, cur))
	#endif

	#if XFS_WANT_FUNCS \|\| (XFS_WANT_SPACE && XFSSO_XFS_INOBT_PTR_ADDR)
	xfs_inobt_ptr_t *
	xfs_inobt_ptr_addr(xfs_inobt_block_t bb, int i, struct xfs_btree_cur cur);
	#define XFS_INOBT_PTR_ADDR(bb,i,cur) xfs_inobt_ptr_addr(bb,i,cur)
	#else
	#define XFS_INOBT_PTR_ADDR(bb,i,cur) \
	XFS_BTREE_PTR_ADDR(XFS_INOBT_BLOCK_SIZE(1,cur), xfs_inobt, bb, i, \
	XFS_INOBT_BLOCK_MAXRECS(1, cur))
	#endif

	/*
	* Prototypes for externally visible routines.
	*/

	/*
	* Decrement cursor by one record at the level.
	* For nonzero levels the leaf-ward information is untouched.
	*/
	int /* error */
	xfs_inobt_decrement(
	struct xfs_btree_cur cur, / btree cursor */
	int level, /* level in btree, 0 is leaf */
	int stat); / success/failure */

	/*
	* Delete the record pointed to by cur.
	* The cursor refers to the place where the record was (could be inserted)
	* when the operation returns.
	*/
	int /* error */
	xfs_inobt_delete(
	struct xfs_btree_cur cur, / btree cursor */
	int stat); / success/failure */

	/*
	* Get the data from the pointed-to record.
	*/
	int /* error */
	xfs_inobt_get_rec(
	struct xfs_btree_cur cur, / btree cursor */
	xfs_agino_t ino, / output: starting inode of chunk */
	__int32_t fcnt, / output: number of free inodes */
	xfs_inofree_t free, / output: free inode mask */
	int stat); / output: success/failure */

	/*
	* Increment cursor by one record at the level.
	* For nonzero levels the leaf-ward information is untouched.
	*/
	int /* error */
	xfs_inobt_increment(
	struct xfs_btree_cur cur, / btree cursor */
	int level, /* level in btree, 0 is leaf */
	int stat); / success/failure */

	/*
	* Insert the current record at the point referenced by cur.
	* The cursor may be inconsistent on return if splits have been done.
	*/
	int /* error */
	xfs_inobt_insert(
	struct xfs_btree_cur cur, / btree cursor */
	int stat); / success/failure */

	/*
	* Lookup the record equal to ino in the btree given by cur.
	*/
	int /* error */
	xfs_inobt_lookup_eq(
	struct xfs_btree_cur cur, / btree cursor */
	xfs_agino_t ino, /* starting inode of chunk */
	__int32_t fcnt, /* free inode count */
	xfs_inofree_t free, /* free inode mask */
	int stat); / success/failure */

	/*
	* Lookup the first record greater than or equal to ino
	* in the btree given by cur.
	*/
	int /* error */
	xfs_inobt_lookup_ge(
	struct xfs_btree_cur cur, / btree cursor */
	xfs_agino_t ino, /* starting inode of chunk */
	__int32_t fcnt, /* free inode count */
	xfs_inofree_t free, /* free inode mask */
	int stat); / success/failure */

	/*
	* Lookup the first record less than or equal to ino
	* in the btree given by cur.
	*/
	int /* error */
	xfs_inobt_lookup_le(
	struct xfs_btree_cur cur, / btree cursor */
	xfs_agino_t ino, /* starting inode of chunk */
	__int32_t fcnt, /* free inode count */
	xfs_inofree_t free, /* free inode mask */
	int stat); / success/failure */

	/*
	* Update the record referred to by cur, to the value given
	* by [ino, fcnt, free].
	* This either works (return 0) or gets an EFSCORRUPTED error.
	*/
	int /* error */
	xfs_inobt_update(
	struct xfs_btree_cur cur, / btree cursor */
	xfs_agino_t ino, /* starting inode of chunk */
	__int32_t fcnt, /* free inode count */
	xfs_inofree_t free); /* free inode mask */

	#endif /* __XFS_IALLOC_BTREE_H__ */