Btrfs: remove rb_node field from the delayed ref node structure

After the last big change in the delayed references code that was needed for the last qgroups rework, the red black tree node field of struct btrfs_delayed_ref_node is no longer used, so just remove it, this helps us save some memory (since struct rb_node is 24 bytes on x86_64) for these structures. Signed-off-by: Filipe Manana <[email protected]>
zhenyw · Nov 19, 2016 · 2a2a83d · 2a2a83d
1 parent 001895b
commit 2a2a83d
Showing 1 changed file with 0 additions and 6 deletions.
diff --git a/fs/btrfs/delayed-ref.h b/fs/btrfs/delayed-ref.h
@@ -34,12 +34,6 @@
  * ref_head. Must clean this mess up later.
  */
 struct btrfs_delayed_ref_node {
-	/*
-	 * ref_head use rb tree, stored in ref_root->href.
-	 * indexed by bytenr
-	 */
-	struct rb_node rb_node;
-
 	/*data/tree ref use list, stored in ref_head->ref_list. */
 	struct list_head list;