Btrfs: minor comments
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 17a3ff2..3292264 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -294,6 +294,10 @@
parent_buf = path->nodes[level + 1];
pslot = path->slots[level + 1];
+ /*
+ * deal with the case where there is only one pointer in the root
+ * by promoting the node below to a root
+ */
if (!parent_buf) {
struct btrfs_buffer *child;
u64 blocknr = mid_buf->blocknr;
@@ -1043,6 +1047,7 @@
int ret;
int wret;
+ /* first try to make some room by pushing left and right */
wret = push_leaf_left(trans, root, path, data_size);
if (wret < 0)
return wret;