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/*
* Copyright (c) 2000-2001,2004-2005 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_MULTIDISK_H__
#define __XFS_MULTIDISK_H__
#define XFS_DFL_SB_VERSION_BITS \
(XFS_SB_VERSION_NLINKBIT | \
XFS_SB_VERSION_EXTFLGBIT | \
XFS_SB_VERSION_DIRV2BIT)
#define XFS_DFL_BLOCKSIZE_LOG 12 /* 4096 byte blocks */
#define XFS_DINODE_DFL_LOG 8 /* 256 byte inodes */
#define XFS_DINODE_DFL_CRC_LOG 9 /* 512 byte inodes for CRCs */
#define XFS_MIN_DATA_BLOCKS 100
#define XFS_MIN_INODE_PERBLOCK 2 /* min inodes per block */
#define XFS_DFL_IMAXIMUM_PCT 25 /* max % of space for inodes */
#define XFS_MIN_REC_DIRSIZE 12 /* 4096 byte dirblocks (V2) */
#define XFS_DFL_LOG_FACTOR 5 /* default log size, factor */
/* with max trans reservation */
#define XFS_MAX_INODE_SIG_BITS 32 /* most significant bits in an
* inode number that we'll
* accept w/o warnings
*/
#define XFS_AG_BYTES(bblog) ((long long)BBSIZE << (bblog))
#define XFS_AG_MIN_BYTES ((XFS_AG_BYTES(15))) /* 16 MB */
#define XFS_AG_MAX_BYTES ((XFS_AG_BYTES(31))) /* 1 TB */
#define XFS_AG_MIN_BLOCKS(blog) (XFS_AG_MIN_BYTES >> (blog))
#define XFS_AG_MAX_BLOCKS(blog) ((XFS_AG_MAX_BYTES - 1) >> (blog))
#define XFS_MAX_AGNUMBER ((xfs_agnumber_t)(NULLAGNUMBER - 1))
/*
* These values define what we consider a "multi-disk" filesystem. That is, a
* filesystem that is likely to be made up of multiple devices, and hence have
* some level of parallelism available to it at the IO level.
*/
#define XFS_MULTIDISK_AGLOG 5 /* 32 AGs */
#define XFS_NOMULTIDISK_AGLOG 2 /* 4 AGs */
#define XFS_MULTIDISK_AGCOUNT (1 << XFS_MULTIDISK_AGLOG)
extern long long cvtnum(unsigned int blksize, unsigned int sectsize,
const char *str);
/* proto.c */
extern char *setup_proto (char *fname);
extern void parse_proto (xfs_mount_t *mp, struct fsxattr *fsx, char **pp);
extern void res_failed (int err);
#endif /* __XFS_MULTIDISK_H__ */