From nobody Mon Jun 29 16:00:01 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id F2288C433FE for ; Tue, 8 Feb 2022 03:15:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242885AbiBHDPT (ORCPT ); Mon, 7 Feb 2022 22:15:19 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48796 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232087AbiBHDPR (ORCPT ); Mon, 7 Feb 2022 22:15:17 -0500 X-Greylist: delayed 1891 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Mon, 07 Feb 2022 19:15:13 PST Received: from m159.mail.126.com (m159.mail.126.com [220.181.15.9]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id D9DA4C061A73 for ; Mon, 7 Feb 2022 19:15:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=126.com; s=s110527; h=Date:From:Subject:MIME-Version:Message-ID; bh=5HZAe cUcBPRUdlmANLyfCJQ7HLdWBlaUrPt5Gc2l46Q=; b=USvsa+sbqhCANcMn8797r sH32k0TNdowlTqlkTbR4lupHCsiSl3eHy3UuTfvk6GUrJY9YHOLqbgESc6cefCAP pXFReqNKeYnHg5EjjERVHs07G42fzZ0XAie/FOA+PPe5rXtGw2nEryad0/3UKIVY eEF/kBKlXqUBxDDV66+QIA= Received: from wonder_rock$126.com ( [61.177.116.114] ) by ajax-webmail-wmsvr9 (Coremail) ; Tue, 8 Feb 2022 10:43:07 +0800 (CST) X-Originating-IP: [61.177.116.114] Date: Tue, 8 Feb 2022 10:43:07 +0800 (CST) From: "Deyan Wang" To: keescook@chromium.org, anton@enomsg.org, ccross@android.com, tony.luck@intel.com Cc: linux-kernel@vger.kernel.org, "Deyan Wang" Subject: [PATCH] pstore/ram: Use reminder directly X-Priority: 3 X-Mailer: Coremail Webmail Server Version XT5.0.13 build 20210622(1d4788a8) Copyright (c) 2002-2022 www.mailtech.cn 126com Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Message-ID: <131fd0c6.14a8.17ed7369c1b.Coremail.wonder_rock@126.com> X-Coremail-Locale: zh_CN X-CM-TRANSID: CcqowAC38Di72AFiEz8fAA--.32993W X-CM-SenderInfo: xzrqvv5ubu0ubn6rjloofrz/1tbiYB6hgVpEGG6odAABsr X-Coremail-Antispam: 1U5529EdanIXcx71UUUUU7vcSsGvfC2KfnxnUU== Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Deyan Wang The remainder is more efficient, we directly use the remainder. Signed-off-by: Deyan Wang --- fs/pstore/ram_core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/pstore/ram_core.c b/fs/pstore/ram_core.c index fe5305028c6e..69928a59e28b 100644 --- a/fs/pstore/ram_core.c +++ b/fs/pstore/ram_core.c @@ -61,8 +61,8 @@ static size_t buffer_start_add(struct persistent_ram_zone= *prz, size_t a) =20 old =3D atomic_read(&prz->buffer->start); new =3D old + a; - while (unlikely(new >=3D prz->buffer_size)) - new -=3D prz->buffer_size; + if (unlikely(new >=3D prz->buffer_size)) + new %=3D prz->buffer_size; atomic_set(&prz->buffer->start, new); =20 if (!(prz->flags & PRZ_FLAG_NO_LOCK)) --=20 2.25.1