1 files changed, 13 insertions, 0 deletions
diff --git a/fs/xfs/xfs_extent_busy.c b/fs/xfs/xfs_extent_busy.c
index 9ecfdcdc752f..2ccde32c9a9e 100644
--- a/fs/xfs/xfs_extent_busy.c
+++ b/fs/xfs/xfs_extent_busy.c
@@ -678,3 +678,16 @@ xfs_extent_busy_ag_cmp(
 		diff = b1->bno - b2->bno;
 	return diff;
 }
+
+/* Are there any busy extents in this AG? */
+bool
+xfs_extent_busy_list_empty(
+	struct xfs_perag	*pag)
+{
+	bool			res;
+
+	spin_lock(&pag->pagb_lock);
+	res = RB_EMPTY_ROOT(&pag->pagb_tree);
+	spin_unlock(&pag->pagb_lock);
+	return res;
+}