Merge git://oss.sgi.com:8090/oss/git/xfs-2.6

1 files changed, 51 insertions, 160 deletions

diff --git a/fs/xfs/xfs_btree.h b/fs/xfs/xfs_btree.h
index 09b4e1532a35..44f1bd98064a 100644
--- a/fs/xfs/xfs_btree.h
+++ b/fs/xfs/xfs_btree.h
@@ -1,33 +1,19 @@
 /*
- * Copyright (c) 2000-2001 Silicon Graphics, Inc.  All Rights Reserved.
+ * Copyright (c) 2000-2001,2005 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_BTREE_H__
 #define __XFS_BTREE_H__
@@ -53,25 +39,23 @@ struct xfs_trans;
 /*
  * Short form header: space allocation btrees.
  */
-typedef struct xfs_btree_sblock
-{
-        __uint32_t      bb_magic;       /* magic number for block type */
-        __uint16_t      bb_level;       /* 0 is a leaf */
-        __uint16_t      bb_numrecs;     /* current # of data records */
-        xfs_agblock_t   bb_leftsib;     /* left sibling block or NULLAGBLOCK */
-        xfs_agblock_t   bb_rightsib;    /* right sibling block or NULLAGBLOCK */
+typedef struct xfs_btree_sblock {
+        __be32          bb_magic;       /* magic number for block type */
+        __be16          bb_level;       /* 0 is a leaf */
+        __be16          bb_numrecs;     /* current # of data records */
+        __be32          bb_leftsib;     /* left sibling block or NULLAGBLOCK */
+        __be32          bb_rightsib;    /* right sibling block or NULLAGBLOCK */
 } xfs_btree_sblock_t;
 
 /*
  * Long form header: bmap btrees.
  */
-typedef struct xfs_btree_lblock
-{
-        __uint32_t      bb_magic;       /* magic number for block type */
-        __uint16_t      bb_level;       /* 0 is a leaf */
-        __uint16_t      bb_numrecs;     /* current # of data records */
-        xfs_dfsbno_t    bb_leftsib;     /* left sibling block or NULLDFSBNO */
-        xfs_dfsbno_t    bb_rightsib;    /* right sibling block or NULLDFSBNO */
+typedef struct xfs_btree_lblock {
+        __be32          bb_magic;       /* magic number for block type */
+        __be16          bb_level;       /* 0 is a leaf */
+        __be16          bb_numrecs;     /* current # of data records */
+        __be64          bb_leftsib;     /* left sibling block or NULLDFSBNO */
+        __be64          bb_rightsib;    /* right sibling block or NULLDFSBNO */
 } xfs_btree_lblock_t;
 
 /*
@@ -79,24 +63,23 @@ typedef struct xfs_btree_lblock
  */
 typedef struct xfs_btree_hdr
 {
-        __uint32_t      bb_magic;       /* magic number for block type */
-        __uint16_t      bb_level;       /* 0 is a leaf */
-        __uint16_t      bb_numrecs;     /* current # of data records */
+        __be32          bb_magic;       /* magic number for block type */
+        __be16          bb_level;       /* 0 is a leaf */
+        __be16          bb_numrecs;     /* current # of data records */
 } xfs_btree_hdr_t;
 
-typedef struct xfs_btree_block
-{
+typedef struct xfs_btree_block {
         xfs_btree_hdr_t bb_h;           /* header */
-        union           {
-                struct  {
-                        xfs_agblock_t   bb_leftsib;
-                        xfs_agblock_t   bb_rightsib;
-                }       s;              /* short form pointers */
+        union {
+                struct {
+                        __be32          bb_leftsib;
+                        __be32          bb_rightsib;
+                } s;                    /* short form pointers */
                 struct  {
-                        xfs_dfsbno_t    bb_leftsib;
-                        xfs_dfsbno_t    bb_rightsib;
-                }       l;              /* long form pointers */
-        }               bb_u;           /* rest */
+                        __be64          bb_leftsib;
+                        __be64          bb_rightsib;
+                } l;                    /* long form pointers */
+        } bb_u;                         /* rest */
 } xfs_btree_block_t;
 
 /*
@@ -113,12 +96,7 @@ typedef struct xfs_btree_block
 /*
  * Boolean to select which form of xfs_btree_block_t.bb_u to use.
  */
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BTREE_LONG_PTRS)
-int xfs_btree_long_ptrs(xfs_btnum_t btnum);
-#define XFS_BTREE_LONG_PTRS(btnum)      ((btnum) == XFS_BTNUM_BMAP)
-#else
 #define XFS_BTREE_LONG_PTRS(btnum)      ((btnum) == XFS_BTNUM_BMAP)
-#endif
 
 /*
  * Magic numbers for btree blocks.
@@ -165,7 +143,7 @@ typedef struct xfs_btree_cur
         struct xfs_trans        *bc_tp; /* transaction we're in, if any */
         struct xfs_mount        *bc_mp; /* file system mount struct */
         union {
-                xfs_alloc_rec_t         a;
+                xfs_alloc_rec_incore_t  a;
                 xfs_bmbt_irec_t         b;
                 xfs_inobt_rec_t         i;
         }               bc_rec;         /* current insert/search record value */
@@ -205,24 +183,10 @@ typedef struct xfs_btree_cur
 /*
  * Convert from buffer to btree block header.
  */
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BUF_TO_BLOCK)
-xfs_btree_block_t *xfs_buf_to_block(struct xfs_buf *bp);
-#define XFS_BUF_TO_BLOCK(bp)    xfs_buf_to_block(bp)
-#else
-#define XFS_BUF_TO_BLOCK(bp)    ((xfs_btree_block_t *)(XFS_BUF_PTR(bp)))
-#endif
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BUF_TO_LBLOCK)
-xfs_btree_lblock_t *xfs_buf_to_lblock(struct xfs_buf *bp);
-#define XFS_BUF_TO_LBLOCK(bp)   xfs_buf_to_lblock(bp)
-#else
-#define XFS_BUF_TO_LBLOCK(bp)   ((xfs_btree_lblock_t *)(XFS_BUF_PTR(bp)))
-#endif
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BUF_TO_SBLOCK)
-xfs_btree_sblock_t *xfs_buf_to_sblock(struct xfs_buf *bp);
-#define XFS_BUF_TO_SBLOCK(bp)   xfs_buf_to_sblock(bp)
-#else
-#define XFS_BUF_TO_SBLOCK(bp)   ((xfs_btree_sblock_t *)(XFS_BUF_PTR(bp)))
-#endif
+#define XFS_BUF_TO_BLOCK(bp)    ((xfs_btree_block_t *)XFS_BUF_PTR(bp))
+#define XFS_BUF_TO_LBLOCK(bp)   ((xfs_btree_lblock_t *)XFS_BUF_PTR(bp))
+#define XFS_BUF_TO_SBLOCK(bp)   ((xfs_btree_sblock_t *)XFS_BUF_PTR(bp))
+
 
 #ifdef __KERNEL__
 
@@ -477,106 +441,33 @@ xfs_btree_setbuf(
 /*
  * Min and max functions for extlen, agblock, fileoff, and filblks types.
  */
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_EXTLEN_MIN)
-xfs_extlen_t xfs_extlen_min(xfs_extlen_t a, xfs_extlen_t b);
-#define XFS_EXTLEN_MIN(a,b)     xfs_extlen_min(a,b)
-#else
 #define XFS_EXTLEN_MIN(a,b)     \
         ((xfs_extlen_t)(a) < (xfs_extlen_t)(b) ? \
-         (xfs_extlen_t)(a) : (xfs_extlen_t)(b))
-#endif
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_EXTLEN_MAX)
-xfs_extlen_t xfs_extlen_max(xfs_extlen_t a, xfs_extlen_t b);
-#define XFS_EXTLEN_MAX(a,b)     xfs_extlen_max(a,b)
-#else
+                (xfs_extlen_t)(a) : (xfs_extlen_t)(b))
 #define XFS_EXTLEN_MAX(a,b)     \
         ((xfs_extlen_t)(a) > (xfs_extlen_t)(b) ? \
-         (xfs_extlen_t)(a) : (xfs_extlen_t)(b))
-#endif
-
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_AGBLOCK_MIN)
-xfs_agblock_t xfs_agblock_min(xfs_agblock_t a, xfs_agblock_t b);
-#define XFS_AGBLOCK_MIN(a,b)    xfs_agblock_min(a,b)
-#else
+                (xfs_extlen_t)(a) : (xfs_extlen_t)(b))
 #define XFS_AGBLOCK_MIN(a,b)    \
         ((xfs_agblock_t)(a) < (xfs_agblock_t)(b) ? \
-         (xfs_agblock_t)(a) : (xfs_agblock_t)(b))
-#endif
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_AGBLOCK_MAX)
-xfs_agblock_t xfs_agblock_max(xfs_agblock_t a, xfs_agblock_t b);
-#define XFS_AGBLOCK_MAX(a,b)    xfs_agblock_max(a,b)
-#else
+                (xfs_agblock_t)(a) : (xfs_agblock_t)(b))
 #define XFS_AGBLOCK_MAX(a,b)    \
         ((xfs_agblock_t)(a) > (xfs_agblock_t)(b) ? \
-         (xfs_agblock_t)(a) : (xfs_agblock_t)(b))
-#endif
-
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_FILEOFF_MIN)
-xfs_fileoff_t xfs_fileoff_min(xfs_fileoff_t a, xfs_fileoff_t b);
-#define XFS_FILEOFF_MIN(a,b)    xfs_fileoff_min(a,b)
-#else
+                (xfs_agblock_t)(a) : (xfs_agblock_t)(b))
 #define XFS_FILEOFF_MIN(a,b)    \
         ((xfs_fileoff_t)(a) < (xfs_fileoff_t)(b) ? \
-         (xfs_fileoff_t)(a) : (xfs_fileoff_t)(b))
-#endif
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_FILEOFF_MAX)
-xfs_fileoff_t xfs_fileoff_max(xfs_fileoff_t a, xfs_fileoff_t b);
-#define XFS_FILEOFF_MAX(a,b)    xfs_fileoff_max(a,b)
-#else
+                (xfs_fileoff_t)(a) : (xfs_fileoff_t)(b))
 #define XFS_FILEOFF_MAX(a,b)    \
         ((xfs_fileoff_t)(a) > (xfs_fileoff_t)(b) ? \
-         (xfs_fileoff_t)(a) : (xfs_fileoff_t)(b))
-#endif
-
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_FILBLKS_MIN)
-xfs_filblks_t xfs_filblks_min(xfs_filblks_t a, xfs_filblks_t b);
-#define XFS_FILBLKS_MIN(a,b)    xfs_filblks_min(a,b)
-#else
+                (xfs_fileoff_t)(a) : (xfs_fileoff_t)(b))
 #define XFS_FILBLKS_MIN(a,b)    \
         ((xfs_filblks_t)(a) < (xfs_filblks_t)(b) ? \
-         (xfs_filblks_t)(a) : (xfs_filblks_t)(b))
-#endif
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_FILBLKS_MAX)
-xfs_filblks_t xfs_filblks_max(xfs_filblks_t a, xfs_filblks_t b);
-#define XFS_FILBLKS_MAX(a,b)    xfs_filblks_max(a,b)
-#else
+                (xfs_filblks_t)(a) : (xfs_filblks_t)(b))
 #define XFS_FILBLKS_MAX(a,b)    \
         ((xfs_filblks_t)(a) > (xfs_filblks_t)(b) ? \
-         (xfs_filblks_t)(a) : (xfs_filblks_t)(b))
-#endif
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_FSB_SANITY_CHECK)
-int xfs_fsb_sanity_check(struct xfs_mount *mp, xfs_fsblock_t fsb);
-#define XFS_FSB_SANITY_CHECK(mp,fsb)    xfs_fsb_sanity_check(mp,fsb)
-#else
+                (xfs_filblks_t)(a) : (xfs_filblks_t)(b))
+
 #define XFS_FSB_SANITY_CHECK(mp,fsb)    \
         (XFS_FSB_TO_AGNO(mp, fsb) < mp->m_sb.sb_agcount && \
-         XFS_FSB_TO_AGBNO(mp, fsb) < mp->m_sb.sb_agblocks)
-#endif
-
-/*
- * Macros to set EFSCORRUPTED & return/branch.
- */
-#define XFS_WANT_CORRUPTED_GOTO(x,l)    \
-        { \
-                int fs_is_ok = (x); \
-                ASSERT(fs_is_ok); \
-                if (unlikely(!fs_is_ok)) { \
-                        XFS_ERROR_REPORT("XFS_WANT_CORRUPTED_GOTO", \
-                                         XFS_ERRLEVEL_LOW, NULL); \
-                        error = XFS_ERROR(EFSCORRUPTED); \
-                        goto l; \
-                } \
-        }
-
-#define XFS_WANT_CORRUPTED_RETURN(x)    \
-        { \
-                int fs_is_ok = (x); \
-                ASSERT(fs_is_ok); \
-                if (unlikely(!fs_is_ok)) { \
-                        XFS_ERROR_REPORT("XFS_WANT_CORRUPTED_RETURN", \
-                                         XFS_ERRLEVEL_LOW, NULL); \
-                        return XFS_ERROR(EFSCORRUPTED); \
-                } \
-        }
+                XFS_FSB_TO_AGBNO(mp, fsb) < mp->m_sb.sb_agblocks)
 
 #endif  /* __XFS_BTREE_H__ */