Fix btrfs_next_leaf to check for new items after dropping locks
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 9601241..b8f7aec 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -2999,7 +2999,14 @@
return ret;
nritems = btrfs_header_nritems(path->nodes[0]);
+ /*
+ * by releasing the path above we dropped all our locks. A balance
+ * could have added more items next to the key that used to be
+ * at the very end of the block. So, check again here and
+ * advance the path if there are now more items available.
+ */
if (nritems > 0 && path->slots[0] < nritems - 1) {
+ path->slots[0]++;
goto done;
}