diff --git a/fs/coda/dir.c b/fs/coda/dir.c
index b8e82bc..ff90117 100644
--- a/fs/coda/dir.c
+++ b/fs/coda/dir.c
@@ -166,7 +166,7 @@ static int coda_create(struct mnt_idmap *idmap, struct inode *dir,
 	return error;
 }
 
-static int coda_mkdir(struct user_namespace *mnt_userns, struct inode *dir,
+static int coda_mkdir(struct mnt_idmap *idmap, struct inode *dir,
 		      struct dentry *de, umode_t mode)
 {
 	struct inode *inode;