From 49db55eca5665e32c9d3e67a7d5694bcc6c274de Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Tue, 16 Jan 2018 18:52:14 -0800 Subject: xfs: add scrub cross-referencing helpers for the refcount btrees Add a couple of functions to the refcount btrees that will be used to cross-reference metadata against the refcountbt. Signed-off-by: Darrick J. Wong Reviewed-by: Dave Chinner --- fs/xfs/libxfs/xfs_refcount.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'fs/xfs/libxfs/xfs_refcount.c') diff --git a/fs/xfs/libxfs/xfs_refcount.c b/fs/xfs/libxfs/xfs_refcount.c index c40d26763075..bee68c23d612 100644 --- a/fs/xfs/libxfs/xfs_refcount.c +++ b/fs/xfs/libxfs/xfs_refcount.c @@ -1696,3 +1696,22 @@ out_cursor: xfs_trans_brelse(tp, agbp); goto out_trans; } + +/* Is there a record covering a given extent? */ +int +xfs_refcount_has_record( + struct xfs_btree_cur *cur, + xfs_agblock_t bno, + xfs_extlen_t len, + bool *exists) +{ + union xfs_btree_irec low; + union xfs_btree_irec high; + + memset(&low, 0, sizeof(low)); + low.rc.rc_startblock = bno; + memset(&high, 0xFF, sizeof(high)); + high.rc.rc_startblock = bno + len - 1; + + return xfs_btree_has_record(cur, &low, &high, exists); +} -- cgit v1.2.3