Btrfs: Optimize allocations as we need to mix data and metadata into one group

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/fs/btrfs/tree-defrag.c b/fs/btrfs/tree-defrag.c
index 6ef1ba5f9c2f..3994795edfeb 100644
--- a/fs/btrfs/tree-defrag.c
+++ b/fs/btrfs/tree-defrag.c
@@ -58,6 +58,10 @@ static int defrag_walk_down(struct btrfs_trans_handle *trans,
         if (root->fs_info->extent_root == root)
                 is_extent = 1;
 
+        if (*level == 1 && cache_only && path->nodes[1] &&
+            !btrfs_buffer_defrag(path->nodes[1])) {
+                goto out;
+        }
         while(*level > 0) {
                 WARN_ON(*level < 0);
                 WARN_ON(*level >= BTRFS_MAX_LEVEL);
@@ -116,7 +120,7 @@ static int defrag_walk_down(struct btrfs_trans_handle *trans,
         WARN_ON(*level >= BTRFS_MAX_LEVEL);
 
         btrfs_clear_buffer_defrag(path->nodes[*level]);
-
+out:
         free_extent_buffer(path->nodes[*level]);
         path->nodes[*level] = NULL;
         *level += 1;