ceph: use rbtree for mon statfs requests

An rbtree is lighter weight, particularly given we will generally have
very few in-flight statfs requests.

Signed-off-by: Sage Weil <sage@newdream.net>

1 files changed, 3 insertions, 2 deletions

diff --git a/fs/ceph/mon_client.h b/fs/ceph/mon_client.h
index 5ca8e48d4379..b958ad5afa06 100644
--- a/fs/ceph/mon_client.h
+++ b/fs/ceph/mon_client.h
@@ -2,7 +2,7 @@
 #define _FS_CEPH_MON_CLIENT_H
 
 #include <linux/completion.h>
-#include <linux/radix-tree.h>
+#include <linux/rbtree.h>
 
 #include "messenger.h"
 #include "msgpool.h"
@@ -45,6 +45,7 @@ struct ceph_mon_request {
  */
 struct ceph_mon_statfs_request {
         u64 tid;
+        struct rb_node node;
         int result;
         struct ceph_statfs *buf;
         struct completion completion;
@@ -75,7 +76,7 @@ struct ceph_mon_client {
         struct ceph_msgpool msgpool_auth_reply;
 
         /* pending statfs requests */
-        struct radix_tree_root statfs_request_tree;
+        struct rb_root statfs_request_tree;
         int num_statfs_requests;
         u64 last_tid;