core/fs/xfs/xfs_sb.h - platform/external/syslinux - Git at Google

 /*
  * Taken from Linux kernel tree (linux/fs/xfs)
  *
  * Copyright (c) 2000-2005 Silicon Graphics, Inc.
  * All Rights Reserved.
  *
  * Copyright (c) 2012 Paulo Alcantara <pcacjr@zytor.com>
  *
  * 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_SB_H_
 #define	XFS_SB_H_

 #include <stddef.h>

 #include <sys/types.h>

 typedef unsigned char uuid_t[16];

 /*
  * Super block
  * Fits into a sector-sized buffer at address 0 of each allocation group.
  * Only the first of these is ever updated except during growfs.
  */

 struct xfs_buf;
 struct xfs_mount;

 #define	XFS_SB_MAGIC		"XFSB"		/* 'XFSB' */
 #define	XFS_SB_VERSION_1	1		/* 5.3, 6.0.1, 6.1 */
 #define	XFS_SB_VERSION_2	2		/* 6.2 - attributes */
 #define	XFS_SB_VERSION_3	3		/* 6.2 - new inode version */
 #define	XFS_SB_VERSION_4	4		/* 6.2+ - bitmask version */
 #define	XFS_SB_VERSION_NUMBITS		0x000f
 #define	XFS_SB_VERSION_ALLFBITS		0xfff0
 #define	XFS_SB_VERSION_SASHFBITS	0xf000
 #define	XFS_SB_VERSION_REALFBITS	0x0ff0
 #define	XFS_SB_VERSION_ATTRBIT		0x0010
 #define	XFS_SB_VERSION_NLINKBIT		0x0020
 #define	XFS_SB_VERSION_QUOTABIT		0x0040
 #define	XFS_SB_VERSION_ALIGNBIT		0x0080
 #define	XFS_SB_VERSION_DALIGNBIT	0x0100
 #define	XFS_SB_VERSION_SHAREDBIT	0x0200
 #define XFS_SB_VERSION_LOGV2BIT		0x0400
 #define XFS_SB_VERSION_SECTORBIT	0x0800
 #define	XFS_SB_VERSION_EXTFLGBIT	0x1000
 #define	XFS_SB_VERSION_DIRV2BIT		0x2000
 #define	XFS_SB_VERSION_BORGBIT		0x4000	/* ASCII only case-insens. */
 #define	XFS_SB_VERSION_MOREBITSBIT	0x8000
 #define	XFS_SB_VERSION_OKSASHFBITS	\
 	(XFS_SB_VERSION_EXTFLGBIT | \
 	 XFS_SB_VERSION_DIRV2BIT | \
 	 XFS_SB_VERSION_BORGBIT)
 #define	XFS_SB_VERSION_OKREALFBITS	\
 	(XFS_SB_VERSION_ATTRBIT | \
 	 XFS_SB_VERSION_NLINKBIT | \
 	 XFS_SB_VERSION_QUOTABIT | \
 	 XFS_SB_VERSION_ALIGNBIT | \
 	 XFS_SB_VERSION_DALIGNBIT | \
 	 XFS_SB_VERSION_SHAREDBIT | \
 	 XFS_SB_VERSION_LOGV2BIT | \
 	 XFS_SB_VERSION_SECTORBIT | \
 	 XFS_SB_VERSION_MOREBITSBIT)
 #define	XFS_SB_VERSION_OKREALBITS	\
 	(XFS_SB_VERSION_NUMBITS | \
 	 XFS_SB_VERSION_OKREALFBITS | \
 	 XFS_SB_VERSION_OKSASHFBITS)

 /*
  * There are two words to hold XFS "feature" bits: the original
  * word, sb_versionnum, and sb_features2.  Whenever a bit is set in
  * sb_features2, the feature bit XFS_SB_VERSION_MOREBITSBIT must be set.
  *
  * These defines represent bits in sb_features2.
  */
 #define XFS_SB_VERSION2_REALFBITS	0x00ffffff	/* Mask: features */
 #define XFS_SB_VERSION2_RESERVED1BIT	0x00000001
 #define XFS_SB_VERSION2_LAZYSBCOUNTBIT	0x00000002	/* Superblk counters */
 #define XFS_SB_VERSION2_RESERVED4BIT	0x00000004
 #define XFS_SB_VERSION2_ATTR2BIT	0x00000008	/* Inline attr rework */
 #define XFS_SB_VERSION2_PARENTBIT	0x00000010	/* parent pointers */
 #define XFS_SB_VERSION2_PROJID32BIT	0x00000080	/* 32 bit project id */

 #define	XFS_SB_VERSION2_OKREALFBITS	\
 	(XFS_SB_VERSION2_LAZYSBCOUNTBIT	| \
 	 XFS_SB_VERSION2_ATTR2BIT	| \
 	 XFS_SB_VERSION2_PROJID32BIT)
 #define	XFS_SB_VERSION2_OKSASHFBITS	\
 	(0)
 #define XFS_SB_VERSION2_OKREALBITS	\
 	(XFS_SB_VERSION2_OKREALFBITS |	\
 	 XFS_SB_VERSION2_OKSASHFBITS )

 /*
  * Sequence number values for the fields.
  */
 typedef enum {
 	XFS_SBS_MAGICNUM, XFS_SBS_BLOCKSIZE, XFS_SBS_DBLOCKS, XFS_SBS_RBLOCKS,
 	XFS_SBS_REXTENTS, XFS_SBS_UUID, XFS_SBS_LOGSTART, XFS_SBS_ROOTINO,
 	XFS_SBS_RBMINO, XFS_SBS_RSUMINO, XFS_SBS_REXTSIZE, XFS_SBS_AGBLOCKS,
 	XFS_SBS_AGCOUNT, XFS_SBS_RBMBLOCKS, XFS_SBS_LOGBLOCKS,
 	XFS_SBS_VERSIONNUM, XFS_SBS_SECTSIZE, XFS_SBS_INODESIZE,
 	XFS_SBS_INOPBLOCK, XFS_SBS_FNAME, XFS_SBS_BLOCKLOG,
 	XFS_SBS_SECTLOG, XFS_SBS_INODELOG, XFS_SBS_INOPBLOG, XFS_SBS_AGBLKLOG,
 	XFS_SBS_REXTSLOG, XFS_SBS_INPROGRESS, XFS_SBS_IMAX_PCT, XFS_SBS_ICOUNT,
 	XFS_SBS_IFREE, XFS_SBS_FDBLOCKS, XFS_SBS_FREXTENTS, XFS_SBS_UQUOTINO,
 	XFS_SBS_GQUOTINO, XFS_SBS_QFLAGS, XFS_SBS_FLAGS, XFS_SBS_SHARED_VN,
 	XFS_SBS_INOALIGNMT, XFS_SBS_UNIT, XFS_SBS_WIDTH, XFS_SBS_DIRBLKLOG,
 	XFS_SBS_LOGSECTLOG, XFS_SBS_LOGSECTSIZE, XFS_SBS_LOGSUNIT,
 	XFS_SBS_FEATURES2, XFS_SBS_BAD_FEATURES2,
 	XFS_SBS_FIELDCOUNT
 } xfs_sb_field_t;

 /*
  * Mask values, defined based on the xfs_sb_field_t values.
  * Only define the ones we're using.
  */
 #define	XFS_SB_MVAL(x)		(1LL << XFS_SBS_ ## x)
 #define	XFS_SB_UUID		XFS_SB_MVAL(UUID)
 #define	XFS_SB_FNAME		XFS_SB_MVAL(FNAME)
 #define	XFS_SB_ROOTINO		XFS_SB_MVAL(ROOTINO)
 #define	XFS_SB_RBMINO		XFS_SB_MVAL(RBMINO)
 #define	XFS_SB_RSUMINO		XFS_SB_MVAL(RSUMINO)
 #define	XFS_SB_VERSIONNUM	XFS_SB_MVAL(VERSIONNUM)
 #define XFS_SB_UQUOTINO		XFS_SB_MVAL(UQUOTINO)
 #define XFS_SB_GQUOTINO		XFS_SB_MVAL(GQUOTINO)
 #define XFS_SB_QFLAGS		XFS_SB_MVAL(QFLAGS)
 #define XFS_SB_SHARED_VN	XFS_SB_MVAL(SHARED_VN)
 #define XFS_SB_UNIT		XFS_SB_MVAL(UNIT)
 #define XFS_SB_WIDTH		XFS_SB_MVAL(WIDTH)
 #define XFS_SB_ICOUNT		XFS_SB_MVAL(ICOUNT)
 #define XFS_SB_IFREE		XFS_SB_MVAL(IFREE)
 #define XFS_SB_FDBLOCKS		XFS_SB_MVAL(FDBLOCKS)
 #define XFS_SB_FEATURES2	XFS_SB_MVAL(FEATURES2)
 #define XFS_SB_BAD_FEATURES2	XFS_SB_MVAL(BAD_FEATURES2)
 #define	XFS_SB_NUM_BITS		((int)XFS_SBS_FIELDCOUNT)
 #define	XFS_SB_ALL_BITS		((1LL << XFS_SB_NUM_BITS) - 1)
 #define	XFS_SB_MOD_BITS		\
 	(XFS_SB_UUID | XFS_SB_ROOTINO | XFS_SB_RBMINO | XFS_SB_RSUMINO | \
 	 XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | XFS_SB_GQUOTINO | \
 	 XFS_SB_QFLAGS | XFS_SB_SHARED_VN | XFS_SB_UNIT | XFS_SB_WIDTH | \
 	 XFS_SB_ICOUNT | XFS_SB_IFREE | XFS_SB_FDBLOCKS | XFS_SB_FEATURES2 | \
 	 XFS_SB_BAD_FEATURES2)


 /*
  * Misc. Flags - warning - these will be cleared by xfs_repair unless
  * a feature bit is set when the flag is used.
  */
 #define XFS_SBF_NOFLAGS		0x00	/* no flags set */
 #define XFS_SBF_READONLY	0x01	/* only read-only mounts allowed */

 /*
  * define max. shared version we can interoperate with
  */
 #define XFS_SB_MAX_SHARED_VN	0

 #define	XFS_SB_VERSION_NUM(sbp)	((sbp)->sb_versionnum & XFS_SB_VERSION_NUMBITS)

 /*
  * end of superblock version macros
  */

 #define	XFS_SB_BLOCK(mp)	XFS_HDR_BLOCK(mp, XFS_SB_DADDR)
 #define XFS_BUF_TO_SBP(bp)	((xfs_dsb_t *)((bp)->b_addr))

 #define	XFS_HDR_BLOCK(mp,d)	((xfs_agblock_t)XFS_BB_TO_FSBT(mp,d))
 #define	XFS_DADDR_TO_FSB(mp,d)	XFS_AGB_TO_FSB(mp, \
 			xfs_daddr_to_agno(mp,d), xfs_daddr_to_agbno(mp,d))
 #define	XFS_FSB_TO_DADDR(mp,fsbno)	XFS_AGB_TO_DADDR(mp, \
 			XFS_FSB_TO_AGNO(mp,fsbno), XFS_FSB_TO_AGBNO(mp,fsbno))

 /*
  * File system sector to basic block conversions.
  */
 #define XFS_FSS_TO_BB(mp,sec)	((sec) << (mp)->m_sectbb_log)

 /*
  * File system block to basic block conversions.
  */
 #define	XFS_FSB_TO_BB(mp,fsbno)	((fsbno) << (mp)->m_blkbb_log)
 #define	XFS_BB_TO_FSB(mp,bb)	\
 	(((bb) + (XFS_FSB_TO_BB(mp,1) - 1)) >> (mp)->m_blkbb_log)
 #define	XFS_BB_TO_FSBT(mp,bb)	((bb) >> (mp)->m_blkbb_log)

 /*
  * File system block to byte conversions.
  */
 #define XFS_FSB_TO_B(mp,fsbno)	((xfs_fsize_t)(fsbno) << (mp)->m_sb.sb_blocklog)
 #define XFS_B_TO_FSB(mp,b)	\
 	((((uint64_t)(b)) + (mp)->m_blockmask) >> (mp)->m_sb.sb_blocklog)
 #define XFS_B_TO_FSBT(mp,b)	(((uint64_t)(b)) >> (mp)->m_sb.sb_blocklog)
 #define XFS_B_FSB_OFFSET(mp,b)	((b) & (mp)->m_blockmask)

 #endif	/* XFS_SB_H_ */
	/*
	* Taken from Linux kernel tree (linux/fs/xfs)
	*
	* Copyright (c) 2000-2005 Silicon Graphics, Inc.
	* All Rights Reserved.
	*
	* Copyright (c) 2012 Paulo Alcantara <pcacjr@zytor.com>
	*
	* 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_SB_H_
	#define XFS_SB_H_

	#include <stddef.h>

	#include <sys/types.h>

	typedef unsigned char uuid_t[16];

	/*
	* Super block
	* Fits into a sector-sized buffer at address 0 of each allocation group.
	* Only the first of these is ever updated except during growfs.
	*/

	struct xfs_buf;
	struct xfs_mount;

	#define XFS_SB_MAGIC "XFSB" /* 'XFSB' */
	#define XFS_SB_VERSION_1 1 /* 5.3, 6.0.1, 6.1 */
	#define XFS_SB_VERSION_2 2 /* 6.2 - attributes */
	#define XFS_SB_VERSION_3 3 /* 6.2 - new inode version */
	#define XFS_SB_VERSION_4 4 /* 6.2+ - bitmask version */
	#define XFS_SB_VERSION_NUMBITS 0x000f
	#define XFS_SB_VERSION_ALLFBITS 0xfff0
	#define XFS_SB_VERSION_SASHFBITS 0xf000
	#define XFS_SB_VERSION_REALFBITS 0x0ff0
	#define XFS_SB_VERSION_ATTRBIT 0x0010
	#define XFS_SB_VERSION_NLINKBIT 0x0020
	#define XFS_SB_VERSION_QUOTABIT 0x0040
	#define XFS_SB_VERSION_ALIGNBIT 0x0080
	#define XFS_SB_VERSION_DALIGNBIT 0x0100
	#define XFS_SB_VERSION_SHAREDBIT 0x0200
	#define XFS_SB_VERSION_LOGV2BIT 0x0400
	#define XFS_SB_VERSION_SECTORBIT 0x0800
	#define XFS_SB_VERSION_EXTFLGBIT 0x1000
	#define XFS_SB_VERSION_DIRV2BIT 0x2000
	#define XFS_SB_VERSION_BORGBIT 0x4000 /* ASCII only case-insens. */
	#define XFS_SB_VERSION_MOREBITSBIT 0x8000
	#define XFS_SB_VERSION_OKSASHFBITS \
	(XFS_SB_VERSION_EXTFLGBIT \| \
	XFS_SB_VERSION_DIRV2BIT \| \
	XFS_SB_VERSION_BORGBIT)
	#define XFS_SB_VERSION_OKREALFBITS \
	(XFS_SB_VERSION_ATTRBIT \| \
	XFS_SB_VERSION_NLINKBIT \| \
	XFS_SB_VERSION_QUOTABIT \| \
	XFS_SB_VERSION_ALIGNBIT \| \
	XFS_SB_VERSION_DALIGNBIT \| \
	XFS_SB_VERSION_SHAREDBIT \| \
	XFS_SB_VERSION_LOGV2BIT \| \
	XFS_SB_VERSION_SECTORBIT \| \
	XFS_SB_VERSION_MOREBITSBIT)
	#define XFS_SB_VERSION_OKREALBITS \
	(XFS_SB_VERSION_NUMBITS \| \
	XFS_SB_VERSION_OKREALFBITS \| \
	XFS_SB_VERSION_OKSASHFBITS)

	/*
	* There are two words to hold XFS "feature" bits: the original
	* word, sb_versionnum, and sb_features2. Whenever a bit is set in
	* sb_features2, the feature bit XFS_SB_VERSION_MOREBITSBIT must be set.
	*
	* These defines represent bits in sb_features2.
	*/
	#define XFS_SB_VERSION2_REALFBITS 0x00ffffff /* Mask: features */
	#define XFS_SB_VERSION2_RESERVED1BIT 0x00000001
	#define XFS_SB_VERSION2_LAZYSBCOUNTBIT 0x00000002 /* Superblk counters */
	#define XFS_SB_VERSION2_RESERVED4BIT 0x00000004
	#define XFS_SB_VERSION2_ATTR2BIT 0x00000008 /* Inline attr rework */
	#define XFS_SB_VERSION2_PARENTBIT 0x00000010 /* parent pointers */
	#define XFS_SB_VERSION2_PROJID32BIT 0x00000080 /* 32 bit project id */

	#define XFS_SB_VERSION2_OKREALFBITS \
	(XFS_SB_VERSION2_LAZYSBCOUNTBIT \| \
	XFS_SB_VERSION2_ATTR2BIT \| \
	XFS_SB_VERSION2_PROJID32BIT)
	#define XFS_SB_VERSION2_OKSASHFBITS \
	(0)
	#define XFS_SB_VERSION2_OKREALBITS \
	(XFS_SB_VERSION2_OKREALFBITS \| \
	XFS_SB_VERSION2_OKSASHFBITS )

	/*
	* Sequence number values for the fields.
	*/
	typedef enum {
	XFS_SBS_MAGICNUM, XFS_SBS_BLOCKSIZE, XFS_SBS_DBLOCKS, XFS_SBS_RBLOCKS,
	XFS_SBS_REXTENTS, XFS_SBS_UUID, XFS_SBS_LOGSTART, XFS_SBS_ROOTINO,
	XFS_SBS_RBMINO, XFS_SBS_RSUMINO, XFS_SBS_REXTSIZE, XFS_SBS_AGBLOCKS,
	XFS_SBS_AGCOUNT, XFS_SBS_RBMBLOCKS, XFS_SBS_LOGBLOCKS,
	XFS_SBS_VERSIONNUM, XFS_SBS_SECTSIZE, XFS_SBS_INODESIZE,
	XFS_SBS_INOPBLOCK, XFS_SBS_FNAME, XFS_SBS_BLOCKLOG,
	XFS_SBS_SECTLOG, XFS_SBS_INODELOG, XFS_SBS_INOPBLOG, XFS_SBS_AGBLKLOG,
	XFS_SBS_REXTSLOG, XFS_SBS_INPROGRESS, XFS_SBS_IMAX_PCT, XFS_SBS_ICOUNT,
	XFS_SBS_IFREE, XFS_SBS_FDBLOCKS, XFS_SBS_FREXTENTS, XFS_SBS_UQUOTINO,
	XFS_SBS_GQUOTINO, XFS_SBS_QFLAGS, XFS_SBS_FLAGS, XFS_SBS_SHARED_VN,
	XFS_SBS_INOALIGNMT, XFS_SBS_UNIT, XFS_SBS_WIDTH, XFS_SBS_DIRBLKLOG,
	XFS_SBS_LOGSECTLOG, XFS_SBS_LOGSECTSIZE, XFS_SBS_LOGSUNIT,
	XFS_SBS_FEATURES2, XFS_SBS_BAD_FEATURES2,
	XFS_SBS_FIELDCOUNT
	} xfs_sb_field_t;

	/*
	* Mask values, defined based on the xfs_sb_field_t values.
	* Only define the ones we're using.
	*/
	#define XFS_SB_MVAL(x) (1LL << XFS_SBS_ ## x)
	#define XFS_SB_UUID XFS_SB_MVAL(UUID)
	#define XFS_SB_FNAME XFS_SB_MVAL(FNAME)
	#define XFS_SB_ROOTINO XFS_SB_MVAL(ROOTINO)
	#define XFS_SB_RBMINO XFS_SB_MVAL(RBMINO)
	#define XFS_SB_RSUMINO XFS_SB_MVAL(RSUMINO)
	#define XFS_SB_VERSIONNUM XFS_SB_MVAL(VERSIONNUM)
	#define XFS_SB_UQUOTINO XFS_SB_MVAL(UQUOTINO)
	#define XFS_SB_GQUOTINO XFS_SB_MVAL(GQUOTINO)
	#define XFS_SB_QFLAGS XFS_SB_MVAL(QFLAGS)
	#define XFS_SB_SHARED_VN XFS_SB_MVAL(SHARED_VN)
	#define XFS_SB_UNIT XFS_SB_MVAL(UNIT)
	#define XFS_SB_WIDTH XFS_SB_MVAL(WIDTH)
	#define XFS_SB_ICOUNT XFS_SB_MVAL(ICOUNT)
	#define XFS_SB_IFREE XFS_SB_MVAL(IFREE)
	#define XFS_SB_FDBLOCKS XFS_SB_MVAL(FDBLOCKS)
	#define XFS_SB_FEATURES2 XFS_SB_MVAL(FEATURES2)
	#define XFS_SB_BAD_FEATURES2 XFS_SB_MVAL(BAD_FEATURES2)
	#define XFS_SB_NUM_BITS ((int)XFS_SBS_FIELDCOUNT)
	#define XFS_SB_ALL_BITS ((1LL << XFS_SB_NUM_BITS) - 1)
	#define XFS_SB_MOD_BITS \
	(XFS_SB_UUID \| XFS_SB_ROOTINO \| XFS_SB_RBMINO \| XFS_SB_RSUMINO \| \
	XFS_SB_VERSIONNUM \| XFS_SB_UQUOTINO \| XFS_SB_GQUOTINO \| \
	XFS_SB_QFLAGS \| XFS_SB_SHARED_VN \| XFS_SB_UNIT \| XFS_SB_WIDTH \| \
	XFS_SB_ICOUNT \| XFS_SB_IFREE \| XFS_SB_FDBLOCKS \| XFS_SB_FEATURES2 \| \
	XFS_SB_BAD_FEATURES2)


	/*
	* Misc. Flags - warning - these will be cleared by xfs_repair unless
	* a feature bit is set when the flag is used.
	*/
	#define XFS_SBF_NOFLAGS 0x00 /* no flags set */
	#define XFS_SBF_READONLY 0x01 /* only read-only mounts allowed */

	/*
	* define max. shared version we can interoperate with
	*/
	#define XFS_SB_MAX_SHARED_VN 0

	#define XFS_SB_VERSION_NUM(sbp) ((sbp)->sb_versionnum & XFS_SB_VERSION_NUMBITS)

	/*
	* end of superblock version macros
	*/

	#define XFS_SB_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_SB_DADDR)
	#define XFS_BUF_TO_SBP(bp) ((xfs_dsb_t *)((bp)->b_addr))

	#define XFS_HDR_BLOCK(mp,d) ((xfs_agblock_t)XFS_BB_TO_FSBT(mp,d))
	#define XFS_DADDR_TO_FSB(mp,d) XFS_AGB_TO_FSB(mp, \
	xfs_daddr_to_agno(mp,d), xfs_daddr_to_agbno(mp,d))
	#define XFS_FSB_TO_DADDR(mp,fsbno) XFS_AGB_TO_DADDR(mp, \
	XFS_FSB_TO_AGNO(mp,fsbno), XFS_FSB_TO_AGBNO(mp,fsbno))

	/*
	* File system sector to basic block conversions.
	*/
	#define XFS_FSS_TO_BB(mp,sec) ((sec) << (mp)->m_sectbb_log)

	/*
	* File system block to basic block conversions.
	*/
	#define XFS_FSB_TO_BB(mp,fsbno) ((fsbno) << (mp)->m_blkbb_log)
	#define XFS_BB_TO_FSB(mp,bb) \
	(((bb) + (XFS_FSB_TO_BB(mp,1) - 1)) >> (mp)->m_blkbb_log)
	#define XFS_BB_TO_FSBT(mp,bb) ((bb) >> (mp)->m_blkbb_log)

	/*
	* File system block to byte conversions.
	*/
	#define XFS_FSB_TO_B(mp,fsbno) ((xfs_fsize_t)(fsbno) << (mp)->m_sb.sb_blocklog)
	#define XFS_B_TO_FSB(mp,b) \
	((((uint64_t)(b)) + (mp)->m_blockmask) >> (mp)->m_sb.sb_blocklog)
	#define XFS_B_TO_FSBT(mp,b) (((uint64_t)(b)) >> (mp)->m_sb.sb_blocklog)
	#define XFS_B_FSB_OFFSET(mp,b) ((b) & (mp)->m_blockmask)

	#endif /* XFS_SB_H_ */