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authorChristoph Hellwig <hch@infradead.org>2008-10-30 09:11:40 +0300
committerLachlan McIlroy <lachlan@sgi.com>2008-10-30 09:11:40 +0300
commit136341b41ad4883bd668120f727a52c42331fe8a (patch)
tree0cb1b220073948f2632911354a828606a9e276bb /fs/xfs/xfs_bmap_btree.h
parent6c7699c047c50403149ad91331dd39de47dea070 (diff)
downloadlinux-136341b41ad4883bd668120f727a52c42331fe8a.tar.xz
[XFS] cleanup btree record / key / ptr addressing macros.
Replace the generic record / key / ptr addressing macros that use cpp token pasting with simpler macros that do the job for just one given btree type. The new macros lose the cur argument and thus can be used outside the core btree code, but also gain an xfs_mount * argument to allow for checking the CRC flag in the near future. Note that many of these macros aren't actually used in the kernel code, but only in userspace (mostly in xfs_repair). SGI-PV: 988146 SGI-Modid: xfs-linux-melb:xfs-kern:32295a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Donald Douwsma <donaldd@sgi.com> Signed-off-by: David Chinner <david@fromorbit.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_bmap_btree.h')
-rw-r--r--fs/xfs/xfs_bmap_btree.h62
1 files changed, 40 insertions, 22 deletions
diff --git a/fs/xfs/xfs_bmap_btree.h b/fs/xfs/xfs_bmap_btree.h
index 835be2a84ca1..7f001072db47 100644
--- a/fs/xfs/xfs_bmap_btree.h
+++ b/fs/xfs/xfs_bmap_btree.h
@@ -21,6 +21,7 @@
#define XFS_BMAP_MAGIC 0x424d4150 /* 'BMAP' */
struct xfs_btree_cur;
+struct xfs_btree_block;
struct xfs_btree_lblock;
struct xfs_mount;
struct xfs_inode;
@@ -151,33 +152,50 @@ typedef struct xfs_btree_lblock xfs_bmbt_block_t;
#define XFS_BUF_TO_BMBT_BLOCK(bp) ((xfs_bmbt_block_t *)XFS_BUF_PTR(bp))
-#define XFS_BMAP_REC_DADDR(bb,i,cur) (XFS_BTREE_REC_ADDR(xfs_bmbt, bb, i))
-
-#define XFS_BMAP_REC_IADDR(bb,i,cur) (XFS_BTREE_REC_ADDR(xfs_bmbt, bb, i))
-
-#define XFS_BMAP_KEY_DADDR(bb,i,cur) \
- (XFS_BTREE_KEY_ADDR(xfs_bmbt, bb, i))
-
-#define XFS_BMAP_KEY_IADDR(bb,i,cur) \
- (XFS_BTREE_KEY_ADDR(xfs_bmbt, bb, i))
-
-#define XFS_BMAP_PTR_DADDR(bb,i,cur) \
- (XFS_BTREE_PTR_ADDR(xfs_bmbt, bb, i, XFS_BMAP_BLOCK_DMAXRECS( \
- be16_to_cpu((bb)->bb_level), cur)))
-#define XFS_BMAP_PTR_IADDR(bb,i,cur) \
- (XFS_BTREE_PTR_ADDR(xfs_bmbt, bb, i, xfs_bmbt_get_maxrecs(cur, \
- be16_to_cpu((bb)->bb_level))))
+#define XFS_BMBT_REC_ADDR(mp, block, index) \
+ ((xfs_bmbt_rec_t *) \
+ ((char *)(block) + \
+ sizeof(struct xfs_btree_lblock) + \
+ ((index) - 1) * sizeof(xfs_bmbt_rec_t)))
+
+#define XFS_BMBT_KEY_ADDR(mp, block, index) \
+ ((xfs_bmbt_key_t *) \
+ ((char *)(block) + \
+ sizeof(struct xfs_btree_lblock) + \
+ ((index) - 1) * sizeof(xfs_bmbt_key_t)))
+
+#define XFS_BMBT_PTR_ADDR(mp, block, index, maxrecs) \
+ ((xfs_bmbt_ptr_t *) \
+ ((char *)(block) + \
+ sizeof(struct xfs_btree_lblock) + \
+ (maxrecs) * sizeof(xfs_bmbt_key_t) + \
+ ((index) - 1) * sizeof(xfs_bmbt_ptr_t)))
+
+#define XFS_BMDR_REC_ADDR(block, index) \
+ ((xfs_bmdr_rec_t *) \
+ ((char *)(block) + \
+ sizeof(struct xfs_bmdr_block) + \
+ ((index) - 1) * sizeof(xfs_bmdr_rec_t)))
+
+#define XFS_BMDR_KEY_ADDR(block, index) \
+ ((xfs_bmdr_key_t *) \
+ ((char *)(block) + \
+ sizeof(struct xfs_bmdr_block) + \
+ ((index) - 1) * sizeof(xfs_bmdr_key_t)))
+
+#define XFS_BMDR_PTR_ADDR(block, index, maxrecs) \
+ ((xfs_bmdr_ptr_t *) \
+ ((char *)(block) + \
+ sizeof(struct xfs_bmdr_block) + \
+ (maxrecs) * sizeof(xfs_bmdr_key_t) + \
+ ((index) - 1) * sizeof(xfs_bmdr_ptr_t)))
/*
* These are to be used when we know the size of the block and
* we don't have a cursor.
*/
-#define XFS_BMAP_BROOT_REC_ADDR(bb,i,sz) \
- (XFS_BTREE_REC_ADDR(xfs_bmbt,bb,i))
-#define XFS_BMAP_BROOT_KEY_ADDR(bb,i,sz) \
- (XFS_BTREE_KEY_ADDR(xfs_bmbt,bb,i))
-#define XFS_BMAP_BROOT_PTR_ADDR(mp, bb,i,sz) \
- (XFS_BTREE_PTR_ADDR(xfs_bmbt,bb,i,xfs_bmbt_maxrecs(mp, sz, 0)))
+#define XFS_BMAP_BROOT_PTR_ADDR(mp, bb, i, sz) \
+ XFS_BMBT_PTR_ADDR(mp, bb, i, xfs_bmbt_maxrecs(mp, sz, 0))
#define XFS_BMAP_BROOT_SPACE_CALC(nrecs) \
(int)(sizeof(xfs_bmbt_block_t) + \