diff options
Diffstat (limited to 'fs/xfs/libxfs/xfs_btree.h')
| -rw-r--r-- | fs/xfs/libxfs/xfs_btree.h | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/fs/xfs/libxfs/xfs_btree.h b/fs/xfs/libxfs/xfs_btree.h index 2a1f30a849f5..559066e3ac12 100644 --- a/fs/xfs/libxfs/xfs_btree.h +++ b/fs/xfs/libxfs/xfs_btree.h @@ -114,13 +114,17 @@ static inline enum xbtree_key_contig xbtree_key_contig(uint64_t x, uint64_t y) return XBTREE_KEY_OVERLAP; } +#define XFS_BTREE_LONG_PTR_LEN (sizeof(__be64)) +#define XFS_BTREE_SHORT_PTR_LEN (sizeof(__be32)) + struct xfs_btree_ops { /* XFS_BTGEO_* flags that determine the geometry of the btree */ unsigned int geom_flags; - /* size of the key and record structures */ - size_t key_len; - size_t rec_len; + /* size of the key, pointer, and record structures */ + size_t key_len; + size_t ptr_len; + size_t rec_len; /* LRU refcount to set on each btree buffer created */ unsigned int lru_refs; @@ -212,10 +216,9 @@ struct xfs_btree_ops { }; /* btree geometry flags */ -#define XFS_BTGEO_LONG_PTRS (1U << 0) /* pointers are 64bits long */ -#define XFS_BTGEO_ROOT_IN_INODE (1U << 1) /* root may be variable size */ -#define XFS_BTGEO_LASTREC_UPDATE (1U << 2) /* track last rec externally */ -#define XFS_BTGEO_OVERLAPPING (1U << 3) /* overlapping intervals */ +#define XFS_BTGEO_ROOT_IN_INODE (1U << 0) /* root may be variable size */ +#define XFS_BTGEO_LASTREC_UPDATE (1U << 1) /* track last rec externally */ +#define XFS_BTGEO_OVERLAPPING (1U << 2) /* overlapping intervals */ /* * Reasons for the update_lastrec method to be called. @@ -289,8 +292,8 @@ struct xfs_btree_cur /* * Short btree pointers need an agno to be able to turn the pointers * into physical addresses for IO, so the btree cursor switches between - * bc_ino and bc_ag based on whether XFS_BTGEO_LONG_PTRS is set for the - * cursor. + * bc_ino and bc_ag based on whether XFS_BTGEO_ROOT_IN_INODE is set for + * the cursor. */ union { struct xfs_btree_cur_ag bc_ag; @@ -689,7 +692,7 @@ xfs_btree_islastblock( block = xfs_btree_get_block(cur, level, &bp); - if (cur->bc_ops->geom_flags & XFS_BTGEO_LONG_PTRS) + if (cur->bc_ops->ptr_len == XFS_BTREE_LONG_PTR_LEN) return block->bb_u.l.bb_rightsib == cpu_to_be64(NULLFSBLOCK); return block->bb_u.s.bb_rightsib == cpu_to_be32(NULLAGBLOCK); } @@ -725,6 +728,9 @@ xfs_btree_alloc_cursor( { struct xfs_btree_cur *cur; + ASSERT(ops->ptr_len == XFS_BTREE_LONG_PTR_LEN || + ops->ptr_len == XFS_BTREE_SHORT_PTR_LEN); + /* BMBT allocations can come through from non-transactional context. */ cur = kmem_cache_zalloc(cache, GFP_KERNEL | __GFP_NOLOCKDEP | __GFP_NOFAIL); |