f2fs: remove the unused ctor argument of f2fs_kmem_cache_create()

Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 1bd9153..72df734 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -1089,7 +1089,7 @@
 static int __init init_inodecache(void)
 {
 	f2fs_inode_cachep = f2fs_kmem_cache_create("f2fs_inode_cache",
-			sizeof(struct f2fs_inode_info), NULL);
+			sizeof(struct f2fs_inode_info));
 	if (!f2fs_inode_cachep)
 		return -ENOMEM;
 	return 0;