From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757520Ab3CGOnN (ORCPT ); Thu, 7 Mar 2013 09:43:13 -0500 Received: from mail-pa0-f52.google.com ([209.85.220.52]:52489 "EHLO mail-pa0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751132Ab3CGOnM (ORCPT ); Thu, 7 Mar 2013 09:43:12 -0500 From: Akinobu Mita To: linux-kernel@vger.kernel.org, akpm@linux-foundation.org Cc: Akinobu Mita , Steven Whitehouse , cluster-devel@redhat.com, Christine Caulfield , David Teigland Subject: [PATCH resend] gfs2: use memchr_inv Date: Thu, 7 Mar 2013 23:42:52 +0900 Message-Id: <1362667372-17979-1-git-send-email-akinobu.mita@gmail.com> X-Mailer: git-send-email 1.8.1.2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Use memchr_inv to verify that the specified memory range is cleared. Signed-off-by: Akinobu Mita Cc: Steven Whitehouse Cc: cluster-devel@redhat.com Cc: Christine Caulfield Cc: David Teigland --- fs/gfs2/lock_dlm.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/fs/gfs2/lock_dlm.c b/fs/gfs2/lock_dlm.c index 9802de0..b56befa 100644 --- a/fs/gfs2/lock_dlm.c +++ b/fs/gfs2/lock_dlm.c @@ -483,12 +483,8 @@ static void control_lvb_write(struct lm_lockstruct *ls, uint32_t lvb_gen, static int all_jid_bits_clear(char *lvb) { - int i; - for (i = JID_BITMAP_OFFSET; i < GDLM_LVB_SIZE; i++) { - if (lvb[i]) - return 0; - } - return 1; + return !memchr_inv(lvb + JID_BITMAP_OFFSET, 0, + GDLM_LVB_SIZE - JID_BITMAP_OFFSET); } static void sync_wait_cb(void *arg) -- 1.8.1.2