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-rw-r--r--fs/btrfs/ulist.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/btrfs/ulist.h b/fs/btrfs/ulist.h
index 21a1963439c3..fb36731074b5 100644
--- a/fs/btrfs/ulist.h
+++ b/fs/btrfs/ulist.h
@@ -8,6 +8,9 @@
#ifndef __ULIST__
#define __ULIST__
+#include <linux/list.h>
+#include <linux/rbtree.h>
+
/*
* ulist is a generic data structure to hold a collection of unique u64
* values. The only operations it supports is adding to the list and
@@ -34,6 +37,7 @@ struct ulist_iterator {
struct ulist_node {
u64 val; /* value to store */
u64 aux; /* auxiliary value saved along with the val */
+ struct rb_node rb_node; /* used to speed up search */
};
struct ulist {
@@ -54,6 +58,8 @@ struct ulist {
*/
struct ulist_node *nodes;
+ struct rb_root root;
+
/*
* inline storage space for the first ULIST_SIZE entries
*/