xfs: consider minlen sized extents in xfs_rtallocate_extent_block

minlen is the lower bound on the extent length that the caller can
accept, and maxlen is at this point the maximal available length.
This means a minlen extent is perfectly fine to use, so do it.  This
matches the equivalent logic in xfs_rtallocate_extent_exact that also
accepts a minlen sized extent.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>

fs/xfs/xfs_rtalloc.c

@@ -309,7 +309,7 @@ xfs_rtallocate_extent_block(
 	/*
 	 * Searched the whole thing & didn't find a maxlen free extent.
 	 */
-	if (minlen < maxlen && besti != -1) {
+	if (minlen <= maxlen && besti != -1) {
 		xfs_rtxlen_t	p;	/* amount to trim length by */
 
 		/*