diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 278fd28..d37b2dc 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -436,6 +436,16 @@
 	call_rcu(&inode->i_rcu, ceph_i_callback);
 }
 
+int ceph_drop_inode(struct inode *inode)
+{
+	/*
+	 * Positve dentry and corresponding inode are always accompanied
+	 * in MDS reply. So no need to keep inode in the cache after
+	 * dropping all its aliases.
+	 */
+	return 1;
+}
+
 /*
  * Helpers to fill in size, ctime, mtime, and atime.  We have to be
  * careful because either the client or MDS may have more up to date