diff --git a/fs/lockd/svclock.c b/fs/lockd/svclock.c
index fb1a2be..8d80c99 100644
--- a/fs/lockd/svclock.c
+++ b/fs/lockd/svclock.c
@@ -289,7 +289,6 @@
 	dprintk("lockd: freeing block %p...\n", block);
 
 	/* Remove block from file's list of blocks */
-	mutex_lock(&file->f_mutex);
 	list_del_init(&block->b_flist);
 	mutex_unlock(&file->f_mutex);
 
@@ -303,7 +302,7 @@
 static void nlmsvc_release_block(struct nlm_block *block)
 {
 	if (block != NULL)
-		kref_put(&block->b_count, nlmsvc_free_block);
+		kref_put_mutex(&block->b_count, nlmsvc_free_block, &block->b_file->f_mutex);
 }
 
 /*