diff options
Diffstat (limited to 'fs/xfs/libxfs/xfs_btree.h')
| -rw-r--r-- | fs/xfs/libxfs/xfs_btree.h | 37 |
1 files changed, 28 insertions, 9 deletions
diff --git a/fs/xfs/libxfs/xfs_btree.h b/fs/xfs/libxfs/xfs_btree.h index ced1e65d1483..fb9b2121c628 100644 --- a/fs/xfs/libxfs/xfs_btree.h +++ b/fs/xfs/libxfs/xfs_btree.h @@ -183,6 +183,9 @@ union xfs_btree_cur_private { unsigned long nr_ops; /* # record updates */ int shape_changes; /* # of extent splits */ } refc; + struct { + bool active; /* allocation cursor state */ + } abt; }; /* @@ -315,14 +318,6 @@ xfs_btree_get_bufs( xfs_agblock_t agbno); /* allocation group block number */ /* - * Check for the cursor referring to the last block at the given level. - */ -int /* 1=is last block, 0=not last block */ -xfs_btree_islastblock( - xfs_btree_cur_t *cur, /* btree cursor */ - int level); /* level to check */ - -/* * Compute first and last byte offsets for the fields given. * Interprets the offsets table, which contains struct field offsets. */ @@ -482,8 +477,15 @@ int xfs_btree_query_all(struct xfs_btree_cur *cur, xfs_btree_query_range_fn fn, typedef int (*xfs_btree_visit_blocks_fn)(struct xfs_btree_cur *cur, int level, void *data); +/* Visit record blocks. */ +#define XFS_BTREE_VISIT_RECORDS (1 << 0) +/* Visit leaf blocks. */ +#define XFS_BTREE_VISIT_LEAVES (1 << 1) +/* Visit all blocks. */ +#define XFS_BTREE_VISIT_ALL (XFS_BTREE_VISIT_RECORDS | \ + XFS_BTREE_VISIT_LEAVES) int xfs_btree_visit_blocks(struct xfs_btree_cur *cur, - xfs_btree_visit_blocks_fn fn, void *data); + xfs_btree_visit_blocks_fn fn, unsigned int flags, void *data); int xfs_btree_count_blocks(struct xfs_btree_cur *cur, xfs_extlen_t *blocks); @@ -514,4 +516,21 @@ int xfs_btree_has_record(struct xfs_btree_cur *cur, union xfs_btree_irec *low, union xfs_btree_irec *high, bool *exists); bool xfs_btree_has_more_records(struct xfs_btree_cur *cur); +/* Does this cursor point to the last block in the given level? */ +static inline bool +xfs_btree_islastblock( + xfs_btree_cur_t *cur, + int level) +{ + struct xfs_btree_block *block; + struct xfs_buf *bp; + + block = xfs_btree_get_block(cur, level, &bp); + ASSERT(block && xfs_btree_check_block(cur, block, level, bp) == 0); + + if (cur->bc_flags & XFS_BTREE_LONG_PTRS) + return block->bb_u.l.bb_rightsib == cpu_to_be64(NULLFSBLOCK); + return block->bb_u.s.bb_rightsib == cpu_to_be32(NULLAGBLOCK); +} + #endif /* __XFS_BTREE_H__ */ |