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path: root/fs/xfs/xfs_alloc_btree.h
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Diffstat (limited to 'fs/xfs/xfs_alloc_btree.h')
-rw-r--r--fs/xfs/xfs_alloc_btree.h18
1 files changed, 10 insertions, 8 deletions
diff --git a/fs/xfs/xfs_alloc_btree.h b/fs/xfs/xfs_alloc_btree.h
index 579f9c7e0872..a6caa0022c9b 100644
--- a/fs/xfs/xfs_alloc_btree.h
+++ b/fs/xfs/xfs_alloc_btree.h
@@ -24,7 +24,6 @@
struct xfs_buf;
struct xfs_btree_cur;
-struct xfs_btree_sblock;
struct xfs_mount;
/*
@@ -50,10 +49,6 @@ typedef struct xfs_alloc_rec_incore {
/* btree pointer type */
typedef __be32 xfs_alloc_ptr_t;
-/* btree block header type */
-typedef struct xfs_btree_sblock xfs_alloc_block_t;
-
-#define XFS_BUF_TO_ALLOC_BLOCK(bp) ((xfs_alloc_block_t *)XFS_BUF_PTR(bp))
/*
* Minimum and maximum blocksize and sectorsize.
@@ -77,6 +72,13 @@ typedef struct xfs_btree_sblock xfs_alloc_block_t;
#define XFS_CNT_BLOCK(mp) ((xfs_agblock_t)(XFS_BNO_BLOCK(mp) + 1))
/*
+ * Btree block header size depends on a superblock flag.
+ *
+ * (not quite yet, but soon)
+ */
+#define XFS_ALLOC_BLOCK_LEN(mp) XFS_BTREE_SBLOCK_LEN
+
+/*
* Record, key, and pointer address macros for btree blocks.
*
* (note that some of these may appear unused, but they are used in userspace)
@@ -84,19 +86,19 @@ typedef struct xfs_btree_sblock xfs_alloc_block_t;
#define XFS_ALLOC_REC_ADDR(mp, block, index) \
((xfs_alloc_rec_t *) \
((char *)(block) + \
- sizeof(struct xfs_btree_sblock) + \
+ XFS_ALLOC_BLOCK_LEN(mp) + \
(((index) - 1) * sizeof(xfs_alloc_rec_t))))
#define XFS_ALLOC_KEY_ADDR(mp, block, index) \
((xfs_alloc_key_t *) \
((char *)(block) + \
- sizeof(struct xfs_btree_sblock) + \
+ XFS_ALLOC_BLOCK_LEN(mp) + \
((index) - 1) * sizeof(xfs_alloc_key_t)))
#define XFS_ALLOC_PTR_ADDR(mp, block, index, maxrecs) \
((xfs_alloc_ptr_t *) \
((char *)(block) + \
- sizeof(struct xfs_btree_sblock) + \
+ XFS_ALLOC_BLOCK_LEN(mp) + \
(maxrecs) * sizeof(xfs_alloc_key_t) + \
((index) - 1) * sizeof(xfs_alloc_ptr_t)))