From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752744Ab3CBOcG (ORCPT ); Sat, 2 Mar 2013 09:32:06 -0500 Received: from mail-pa0-f42.google.com ([209.85.220.42]:54413 "EHLO mail-pa0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752671Ab3CBOcE (ORCPT ); Sat, 2 Mar 2013 09:32:04 -0500 From: Akinobu Mita To: linux-kernel@vger.kernel.org, akpm@linux-foundation.org Cc: Akinobu Mita , Steven Whitehouse , cluster-devel@redhat.com Subject: [PATCH 2/2] gfs2: use memchr_inv Date: Sat, 2 Mar 2013 23:31:35 +0900 Message-Id: <1362234695-5339-2-git-send-email-akinobu.mita@gmail.com> X-Mailer: git-send-email 1.8.1.2 In-Reply-To: <1362234695-5339-1-git-send-email-akinobu.mita@gmail.com> References: <1362234695-5339-1-git-send-email-akinobu.mita@gmail.com> 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 --- 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 ead5b36..830ad2f 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(void *lvb) { - int i; - for (i = JID_BITMAP_OFFSET; i < GDLM_LVB_SIZE; i++) { - if (((char *)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