ceph: use rbtree for snap_realms

Switch from radix tree to rbtree for snap realms. This is much more appropriate given that realm keys are few and far between. Signed-off-by: Sage Weil <sage@newdream.net>
2010-02-15 14:37:55 -08:00
parent 44ca18f268
commit a105f00cf1
4 changed files with 47 additions and 23 deletions
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -656,6 +656,8 @@ static inline void ceph_put_snap_context(struct ceph_snap_context *sc)
 struct ceph_snap_realm {
 	u64 ino;
 	atomic_t nref;
+	struct rb_node node;
+
 	u64 created, seq;
 	u64 parent_ino;
 	u64 parent_since;   /* snapid when our current parent became so */