[XFS] fix compile on 32 bit systems

[safe/jmp/linux-2.6] / fs / xfs / xfs_btree.h

diff --git a/fs/xfs/xfs_btree.h b/fs/xfs/xfs_btree.h
index 7425b2b..789fffd 100644 (file)
--- a/fs/xfs/xfs_btree.h
+++ b/fs/xfs/xfs_btree.h
@@ -39,31 +39,16 @@ extern kmem_zone_t  *xfs_btree_cur_zone;
 #define        XFS_BTNUM_INO   ((xfs_btnum_t)XFS_BTNUM_INOi)
 
 /*
- * Short form header: space allocation btrees.
- */
-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 {
-       __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;
-
-/*
- * Combined header and structure, used by common code.
+ * Generic btree header.
+ *
+ * This is a comination of the actual format used on disk for short and long
+ * format btrees.  The first three fields are shared by both format, but
+ * the pointers are different and should be used with care.
+ *
+ * To get the size of the actual short or long form headers please use
+ * the size macros below.  Never use sizeof(xfs_btree_block).
  */
-typedef struct xfs_btree_block {
+struct xfs_btree_block {
        __be32          bb_magic;       /* magic number for block type */
        __be16          bb_level;       /* 0 is a leaf */
        __be16          bb_numrecs;     /* current # of data records */
@@ -77,7 +62,11 @@ typedef struct xfs_btree_block {
                        __be64          bb_rightsib;
                } l;                    /* long form pointers */
        } bb_u;                         /* rest */
-} xfs_btree_block_t;
+};
+
+#define XFS_BTREE_SBLOCK_LEN   16      /* size of a short form block */
+#define XFS_BTREE_LBLOCK_LEN   24      /* size of a long form block */
+
 
 /*
  * Generic key, ptr and record wrapper structures.
@@ -148,34 +137,6 @@ do {    \
        case XFS_BTNUM_MAX: ASSERT(0); /* fucking gcc */ ; break;       \
        }       \
 } while (0)
-/*
- * Maximum and minimum records in a btree block.
- * Given block size, type prefix, and leaf flag (0 or 1).
- * The divisor below is equivalent to lf ? (e1) : (e2) but that produces
- * compiler warnings.
- */
-#define        XFS_BTREE_BLOCK_MAXRECS(bsz,t,lf)       \
-       ((int)(((bsz) - (uint)sizeof(t ## _block_t)) / \
-        (((lf) * (uint)sizeof(t ## _rec_t)) + \
-         ((1 - (lf)) * \
-          ((uint)sizeof(t ## _key_t) + (uint)sizeof(t ## _ptr_t))))))
-#define        XFS_BTREE_BLOCK_MINRECS(bsz,t,lf)       \
-       (XFS_BTREE_BLOCK_MAXRECS(bsz,t,lf) / 2)
-
-/*
- * Record, key, and pointer address calculation macros.
- * Given block size, type prefix, block pointer, and index of requested entry
- * (first entry numbered 1).
- */
-#define        XFS_BTREE_REC_ADDR(t,bb,i)      \
-       ((t ## _rec_t *)((char *)(bb) + sizeof(t ## _block_t) + \
-        ((i) - 1) * sizeof(t ## _rec_t)))
-#define        XFS_BTREE_KEY_ADDR(t,bb,i)      \
-       ((t ## _key_t *)((char *)(bb) + sizeof(t ## _block_t) + \
-        ((i) - 1) * sizeof(t ## _key_t)))
-#define        XFS_BTREE_PTR_ADDR(t,bb,i,mxr)  \
-       ((t ## _ptr_t *)((char *)(bb) + sizeof(t ## _block_t) + \
-        (mxr) * sizeof(t ## _key_t) + ((i) - 1) * sizeof(t ## _ptr_t)))
 
 #define        XFS_BTREE_MAXLEVELS     8       /* max of all btrees */
 
@@ -322,22 +283,10 @@ typedef struct xfs_btree_cur
 /*
  * Convert from buffer to btree block header.
  */
-#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))
+#define        XFS_BUF_TO_BLOCK(bp)    ((struct xfs_btree_block *)XFS_BUF_PTR(bp))
 
 
 /*
- * Check that long form block header is ok.
- */
-int                                    /* error (0 or EFSCORRUPTED) */
-xfs_btree_check_lblock(
-       struct xfs_btree_cur    *cur,   /* btree cursor */
-       struct xfs_btree_lblock *block, /* btree long form block pointer */
-       int                     level,  /* level of the btree block */
-       struct xfs_buf          *bp);   /* buffer containing block, if any */
-
-/*
  * Check that block header is ok.
  */
 int