Commit 5b5c2dbd authored Aug 26, 2016 by Darrick J. Wong Committed by Dave Chinner Aug 26, 2016

xfs: simple btree query range should look right if LE lookup fails



If the initial LOOKUP_LE in the simple query range fails to find
anything, we should attempt to increment the btree cursor to see
if there actually /are/ records for what we're trying to find.
Without this patch, a bnobt range query of (0, $agsize) returns
no results because the leftmost record never has a startblock
of zero.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>

parent 72227899

fs/xfs/libxfs/xfs_btree.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -4558,6 +4558,13 @@ xfs_btree_simple_query_range(
		if (error)
		goto out;

		/* Nothing? See if there's anything to the right. */
		if (!stat) {
		error = xfs_btree_increment(cur, 0, &stat);
		if (error)
		goto out;
		}

		while (stat) {
		/* Find the record. */
		error = xfs_btree_get_rec(cur, &recp, &stat);