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* Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
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* Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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* This program is distributed in the hope that it would be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* Further, this software is distributed without any warranty that it is
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* free of the rightful claim of any third person regarding infringement
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* or the like. Any license provided herein, whether implied or
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* otherwise, applies only to this software file. Patent licenses, if
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* any, provided herein do not apply to combinations of this program with
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* other software, or any other product whatsoever.
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write the Free Software Foundation, Inc., 59
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* Temple Place - Suite 330, Boston MA 02111-1307, USA.
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* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
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* Mountain View, CA 94043, or:
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* For further information regarding this notice, see:
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* For further information regarding this notice, see:
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* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
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#ifndef __XFS_BMAP_H__
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#define XFS_BMAPI_IGSTATE 0x200 /* Ignore state - */
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/* combine contig. space */
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#define XFS_BMAPI_CONTIG 0x400 /* must allocate only one extent */
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#define XFS_BMAPI_DIRECT_IO 0x800 /* Flag from cxfs client, not used
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* by xfs directly. Indicates alloc
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* request is for direct I/O not
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* extent conversion by server */
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#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAPI_AFLAG)
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int xfs_bmapi_aflag(int w);
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#define DELAYSTARTBLOCK ((xfs_fsblock_t)-1LL)
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#define HOLESTARTBLOCK ((xfs_fsblock_t)-2LL)
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* Trace operations for bmap extent tracing
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#define XFS_BMAP_KTRACE_DELETE 1
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#define XFS_BMAP_KTRACE_INSERT 2
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#define XFS_BMAP_KTRACE_PRE_UP 3
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#define XFS_BMAP_KTRACE_POST_UP 4
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#define XFS_BMAP_TRACE_SIZE 4096 /* size of global trace buffer */
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#define XFS_BMAP_KTRACE_SIZE 32 /* size of per-inode trace buffer */
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#if defined(XFS_ALL_TRACE)
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#define XFS_BMAP_TRACE
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#undef XFS_BMAP_TRACE
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#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_INIT)
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void xfs_bmap_init(xfs_bmap_free_t *flp, xfs_fsblock_t *fbp);
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#define XFS_BMAP_INIT(flp,fbp) xfs_bmap_init(flp,fbp)
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xfs_extlen_t total; /* total blocks needed for xaction */
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xfs_extlen_t minlen; /* mininum allocation size (blocks) */
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xfs_extlen_t minleft; /* amount must be left after alloc */
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int eof; /* set if allocating past last extent */
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int wasdel; /* replacing a delayed allocation */
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int userdata;/* set if is user data */
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int low; /* low on space, using seq'l ags */
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int aeof; /* allocated space at eof */
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char eof; /* set if allocating past last extent */
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char wasdel; /* replacing a delayed allocation */
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char userdata;/* set if is user data */
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char low; /* low on space, using seq'l ags */
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char aeof; /* allocated space at eof */
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} xfs_bmalloca_t;
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#ifdef __KERNEL__
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#if defined(XFS_BMAP_TRACE)
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* Trace operations for bmap extent tracing
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#define XFS_BMAP_KTRACE_DELETE 1
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#define XFS_BMAP_KTRACE_INSERT 2
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#define XFS_BMAP_KTRACE_PRE_UP 3
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#define XFS_BMAP_KTRACE_POST_UP 4
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#define XFS_BMAP_TRACE_SIZE 4096 /* size of global trace buffer */
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#define XFS_BMAP_KTRACE_SIZE 32 /* size of per-inode trace buffer */
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extern ktrace_t *xfs_bmap_trace_buf;
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* Add bmap trace insert entries for all the contents of the extent list.
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xfs_bmap_trace_exlist(
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char *fname, /* function name */
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struct xfs_inode *ip, /* incore inode pointer */
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xfs_extnum_t cnt, /* count of entries in list */
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int whichfork); /* data or attr fork */
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#define xfs_bmap_trace_exlist(f,ip,c,w)
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* Convert inode from non-attributed to attributed.
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* Must not be in a transaction, ip must not be locked.
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xfs_bmap_check_swappable(
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struct xfs_inode *ip); /* incore inode */
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* Compute and fill in the value of the maximum depth of a bmap btree
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* in this filesystem. Done once, during mount.
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int whichfork); /* data or attr fork */
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* Routine to be called at transaction's end by xfs_bmapi, xfs_bunmapi
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* Routine to be called at transaction's end by xfs_bmapi, xfs_bunmapi
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* caller. Frees all the extents that need freeing, which must be done
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* last due to locking considerations.
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struct xfs_inode *ip, /* incore inode */
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int whichfork); /* data or attr fork */
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#if defined(XFS_BMAP_TRACE)
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* Add bmap trace insert entries for all the contents of the extent list.
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xfs_bmap_trace_exlist(
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char *fname, /* function name */
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struct xfs_inode *ip, /* incore inode pointer */
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xfs_extnum_t cnt, /* count of entries in list */
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int whichfork); /* data or attr fork */
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#define xfs_bmap_trace_exlist(f,ip,c,w)
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* Map file blocks to filesystem blocks.
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* File range is given by the bno/len pair.
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* must be remembered and presented to subsequent calls in "firstblock".
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* An upper bound for the number of blocks to be allocated is supplied to
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* the first call in "total"; if no allocation group has that many free
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* blocks then the call will fail (return NULLFSBLOCK in "firstblock").
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* blocks then the call will fail (return NULLFSBLOCK in "firstblock").
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struct xfs_inode *ip,
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struct xfs_inode *ip,
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* Check if the endoff is outside the last extent. If so the caller will grow
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* Check if the endoff is outside the last extent. If so the caller will grow
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* the allocation to a stripe unit boundary
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struct xfs_inode *ip,
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xfs_fileoff_t endoff,
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struct xfs_inode *ip,
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xfs_fileoff_t endoff,
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* Count fsblocks of the given fork.
added
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include/xfs_bmap.h
