From: Julia Lawall Subject: [PATCH 2/4] fs/ext2/balloc.c: delete useless initialization Date: Thu, 4 Aug 2011 12:29:32 +0200 Message-ID: <1312453774-23333-3-git-send-email-julia@diku.dk> References: <1312453774-23333-1-git-send-email-julia@diku.dk> Cc: kernel-janitors@vger.kernel.org, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org To: Jan Kara Return-path: Received: from mgw2.diku.dk ([130.225.96.92]:59154 "EHLO mgw2.diku.dk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753603Ab1HDK3k (ORCPT ); Thu, 4 Aug 2011 06:29:40 -0400 In-Reply-To: <1312453774-23333-1-git-send-email-julia@diku.dk> Sender: linux-ext4-owner@vger.kernel.org List-ID: From: Julia Lawall Delete nontrivial initialization that is immediately overwritten by the result of an allocation function. The semantic match that makes this change is as follows: (http://coccinelle.lip6.fr/) // @@ type T; identifier i; expression e; @@ ( T i = \(0\|NULL\|ERR_PTR(...)\); | -T i = e; +T i; ) ... when != i i = \(kzalloc\|kcalloc\|kmalloc\)(...); // Signed-off-by: Julia Lawall --- fs/ext2/balloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff -u -p a/fs/ext2/balloc.c b/fs/ext2/balloc.c --- a/fs/ext2/balloc.c +++ b/fs/ext2/balloc.c @@ -421,7 +421,7 @@ static inline int rsv_is_empty(struct ex void ext2_init_block_alloc_info(struct inode *inode) { struct ext2_inode_info *ei = EXT2_I(inode); - struct ext2_block_alloc_info *block_i = ei->i_block_alloc_info; + struct ext2_block_alloc_info *block_i; struct super_block *sb = inode->i_sb; block_i = kmalloc(sizeof(*block_i), GFP_NOFS);