/*
- * Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
+ * Copyright (c) 2000,2005 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
+ * 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.
+ * 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.
*
- * 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/
+ * 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_ALLOC_BTREE_H__
#define __XFS_ALLOC_BTREE_H__
/*
* Data record/key structure
*/
-typedef struct xfs_alloc_rec
-{
+typedef struct xfs_alloc_rec {
+ __be32 ar_startblock; /* starting block number */
+ __be32 ar_blockcount; /* count of free blocks */
+} xfs_alloc_rec_t, xfs_alloc_key_t;
+
+typedef struct xfs_alloc_rec_incore {
xfs_agblock_t ar_startblock; /* starting block number */
xfs_extlen_t ar_blockcount; /* count of free blocks */
-} xfs_alloc_rec_t, xfs_alloc_key_t;
+} xfs_alloc_rec_incore_t;
-typedef xfs_agblock_t xfs_alloc_ptr_t; /* btree pointer type */
- /* btree block header type */
+/* btree pointer type */
+typedef __be32 xfs_alloc_ptr_t;
+/* btree block header type */
typedef struct xfs_btree_sblock xfs_alloc_block_t;
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BUF_TO_ALLOC_BLOCK)
-xfs_alloc_block_t *xfs_buf_to_alloc_block(struct xfs_buf *bp);
-#define XFS_BUF_TO_ALLOC_BLOCK(bp) xfs_buf_to_alloc_block(bp)
-#else
-#define XFS_BUF_TO_ALLOC_BLOCK(bp) ((xfs_alloc_block_t *)(XFS_BUF_PTR(bp)))
-#endif
+#define XFS_BUF_TO_ALLOC_BLOCK(bp) ((xfs_alloc_block_t *)XFS_BUF_PTR(bp))
/*
* Real block structures have a size equal to the disk block size.
*/
-
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_ALLOC_BLOCK_SIZE)
-int xfs_alloc_block_size(int lev, struct xfs_btree_cur *cur);
-#define XFS_ALLOC_BLOCK_SIZE(lev,cur) xfs_alloc_block_size(lev,cur)
-#else
#define XFS_ALLOC_BLOCK_SIZE(lev,cur) (1 << (cur)->bc_blocklog)
-#endif
-
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_ALLOC_BLOCK_MAXRECS)
-int xfs_alloc_block_maxrecs(int lev, struct xfs_btree_cur *cur);
-#define XFS_ALLOC_BLOCK_MAXRECS(lev,cur) xfs_alloc_block_maxrecs(lev,cur)
-#else
-#define XFS_ALLOC_BLOCK_MAXRECS(lev,cur) \
- ((cur)->bc_mp->m_alloc_mxr[lev != 0])
-#endif
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_ALLOC_BLOCK_MINRECS)
-int xfs_alloc_block_minrecs(int lev, struct xfs_btree_cur *cur);
-#define XFS_ALLOC_BLOCK_MINRECS(lev,cur) xfs_alloc_block_minrecs(lev,cur)
-#else
-#define XFS_ALLOC_BLOCK_MINRECS(lev,cur) \
- ((cur)->bc_mp->m_alloc_mnr[lev != 0])
-#endif
+#define XFS_ALLOC_BLOCK_MAXRECS(lev,cur) ((cur)->bc_mp->m_alloc_mxr[lev != 0])
+#define XFS_ALLOC_BLOCK_MINRECS(lev,cur) ((cur)->bc_mp->m_alloc_mnr[lev != 0])
/*
* Minimum and maximum blocksize and sectorsize.
* Block numbers in the AG:
* SB is sector 0, AGF is sector 1, AGI is sector 2, AGFL is sector 3.
*/
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BNO_BLOCK)
-xfs_agblock_t xfs_bno_block(struct xfs_mount *mp);
-#define XFS_BNO_BLOCK(mp) xfs_bno_block(mp)
-#else
#define XFS_BNO_BLOCK(mp) ((xfs_agblock_t)(XFS_AGFL_BLOCK(mp) + 1))
-#endif
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_CNT_BLOCK)
-xfs_agblock_t xfs_cnt_block(struct xfs_mount *mp);
-#define XFS_CNT_BLOCK(mp) xfs_cnt_block(mp)
-#else
#define XFS_CNT_BLOCK(mp) ((xfs_agblock_t)(XFS_BNO_BLOCK(mp) + 1))
-#endif
/*
* Record, key, and pointer address macros for btree blocks.
*/
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_ALLOC_REC_ADDR)
-xfs_alloc_rec_t *xfs_alloc_rec_addr(xfs_alloc_block_t *bb, int i,
- struct xfs_btree_cur *cur);
-#define XFS_ALLOC_REC_ADDR(bb,i,cur) xfs_alloc_rec_addr(bb,i,cur)
-#else
#define XFS_ALLOC_REC_ADDR(bb,i,cur) \
- XFS_BTREE_REC_ADDR(XFS_ALLOC_BLOCK_SIZE(0,cur), xfs_alloc, bb, i, \
- XFS_ALLOC_BLOCK_MAXRECS(0, cur))
-#endif
+ XFS_BTREE_REC_ADDR(XFS_ALLOC_BLOCK_SIZE(0,cur), xfs_alloc, \
+ bb, i, XFS_ALLOC_BLOCK_MAXRECS(0, cur))
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_ALLOC_KEY_ADDR)
-xfs_alloc_key_t *xfs_alloc_key_addr(xfs_alloc_block_t *bb, int i,
- struct xfs_btree_cur *cur);
-#define XFS_ALLOC_KEY_ADDR(bb,i,cur) xfs_alloc_key_addr(bb,i,cur)
-#else
#define XFS_ALLOC_KEY_ADDR(bb,i,cur) \
- XFS_BTREE_KEY_ADDR(XFS_ALLOC_BLOCK_SIZE(1,cur), xfs_alloc, bb, i, \
- XFS_ALLOC_BLOCK_MAXRECS(1, cur))
-#endif
+ XFS_BTREE_KEY_ADDR(XFS_ALLOC_BLOCK_SIZE(1,cur), xfs_alloc, \
+ bb, i, XFS_ALLOC_BLOCK_MAXRECS(1, cur))
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_ALLOC_PTR_ADDR)
-xfs_alloc_ptr_t *xfs_alloc_ptr_addr(xfs_alloc_block_t *bb, int i,
- struct xfs_btree_cur *cur);
-#define XFS_ALLOC_PTR_ADDR(bb,i,cur) xfs_alloc_ptr_addr(bb,i,cur)
-#else
#define XFS_ALLOC_PTR_ADDR(bb,i,cur) \
- XFS_BTREE_PTR_ADDR(XFS_ALLOC_BLOCK_SIZE(1,cur), xfs_alloc, bb, i, \
- XFS_ALLOC_BLOCK_MAXRECS(1, cur))
-#endif
-
-/*
- * Prototypes for externally visible routines.
- */
+ XFS_BTREE_PTR_ADDR(XFS_ALLOC_BLOCK_SIZE(1,cur), xfs_alloc, \
+ bb, i, XFS_ALLOC_BLOCK_MAXRECS(1, cur))
/*
* Decrement cursor by one record at the level.
* For nonzero levels the leaf-ward information is untouched.
*/
-int /* error */
-xfs_alloc_decrement(
- struct xfs_btree_cur *cur, /* btree cursor */
- int level, /* level in btree, 0 is leaf */
- int *stat); /* success/failure */
+extern int xfs_alloc_decrement(struct xfs_btree_cur *cur, int level, int *stat);
/*
* 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_alloc_delete(
- struct xfs_btree_cur *cur, /* btree cursor */
- int *stat); /* success/failure */
+extern int xfs_alloc_delete(struct xfs_btree_cur *cur, int *stat);
/*
* Get the data from the pointed-to record.
*/
-int /* error */
-xfs_alloc_get_rec(
- struct xfs_btree_cur *cur, /* btree cursor */
- xfs_agblock_t *bno, /* output: starting block of extent */
- xfs_extlen_t *len, /* output: length of extent */
- int *stat); /* output: success/failure */
+extern int xfs_alloc_get_rec(struct xfs_btree_cur *cur, xfs_agblock_t *bno,
+ xfs_extlen_t *len, int *stat);
/*
* Increment cursor by one record at the level.
* For nonzero levels the leaf-ward information is untouched.
*/
-int /* error */
-xfs_alloc_increment(
- struct xfs_btree_cur *cur, /* btree cursor */
- int level, /* level in btree, 0 is leaf */
- int *stat); /* success/failure */
+extern int xfs_alloc_increment(struct xfs_btree_cur *cur, int level, int *stat);
/*
* 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_alloc_insert(
- struct xfs_btree_cur *cur, /* btree cursor */
- int *stat); /* success/failure */
+extern int xfs_alloc_insert(struct xfs_btree_cur *cur, int *stat);
/*
* Lookup the record equal to [bno, len] in the btree given by cur.
*/
-int /* error */
-xfs_alloc_lookup_eq(
- struct xfs_btree_cur *cur, /* btree cursor */
- xfs_agblock_t bno, /* starting block of extent */
- xfs_extlen_t len, /* length of extent */
- int *stat); /* success/failure */
+extern int xfs_alloc_lookup_eq(struct xfs_btree_cur *cur, xfs_agblock_t bno,
+ xfs_extlen_t len, int *stat);
/*
* Lookup the first record greater than or equal to [bno, len]
* in the btree given by cur.
*/
-int /* error */
-xfs_alloc_lookup_ge(
- struct xfs_btree_cur *cur, /* btree cursor */
- xfs_agblock_t bno, /* starting block of extent */
- xfs_extlen_t len, /* length of extent */
- int *stat); /* success/failure */
+extern int xfs_alloc_lookup_ge(struct xfs_btree_cur *cur, xfs_agblock_t bno,
+ xfs_extlen_t len, int *stat);
/*
* Lookup the first record less than or equal to [bno, len]
* in the btree given by cur.
*/
-int /* error */
-xfs_alloc_lookup_le(
- struct xfs_btree_cur *cur, /* btree cursor */
- xfs_agblock_t bno, /* starting block of extent */
- xfs_extlen_t len, /* length of extent */
- int *stat); /* success/failure */
+extern int xfs_alloc_lookup_le(struct xfs_btree_cur *cur, xfs_agblock_t bno,
+ xfs_extlen_t len, int *stat);
/*
* Update the record referred to by cur, to the value given by [bno, len].
* This either works (return 0) or gets an EFSCORRUPTED error.
*/
-int /* error */
-xfs_alloc_update(
- struct xfs_btree_cur *cur, /* btree cursor */
- xfs_agblock_t bno, /* starting block of extent */
- xfs_extlen_t len); /* length of extent */
+extern int xfs_alloc_update(struct xfs_btree_cur *cur, xfs_agblock_t bno,
+ xfs_extlen_t len);
#endif /* __XFS_ALLOC_BTREE_H__ */
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