diff --git a/fs/fscache/netfs.c b/fs/fscache/netfs.c
index 9b28649df3a1fdc6f0f0c23b58b03db94dd69eb2..a8aa00be44442f59d6cf08516ab7403d0c02ab9e 100644
--- a/fs/fscache/netfs.c
+++ b/fs/fscache/netfs.c
@@ -48,6 +48,7 @@ int __fscache_register_netfs(struct fscache_netfs *netfs)
 	cookie->flags		= 1 << FSCACHE_COOKIE_ENABLED;
 
 	spin_lock_init(&cookie->lock);
+	spin_lock_init(&cookie->stores_lock);
 	INIT_HLIST_HEAD(&cookie->backing_objects);
 
 	/* check the netfs type is not already present */