From nobody Tue Jun 30 05:35:10 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 6CA15C433F5 for ; Mon, 24 Jan 2022 15:15:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240744AbiAXPPB (ORCPT ); Mon, 24 Jan 2022 10:15:01 -0500 Received: from m15113.mail.126.com ([220.181.15.113]:1176 "EHLO m15113.mail.126.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240713AbiAXPPA (ORCPT ); Mon, 24 Jan 2022 10:15:00 -0500 X-Greylist: delayed 1891 seconds by postgrey-1.27 at vger.kernel.org; Mon, 24 Jan 2022 10:14:59 EST DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=126.com; s=s110527; h=From:Subject:Date:Message-Id:MIME-Version; bh=MUBBQ 58hKYSQ3ZzR/De1jQkk/sAxXI77CBURZOFvWwE=; b=BGP7zS40IPKTEgKwW+BVr Hq5rSydSbgmpKRr3qTiXDmJNK7KZXu3/ARnwJ75verv7E/OyXRVxDc+2TD2NWCnH b/4KiHOqaKCp9jcI6AOy79UP9zdPZqSwo26se2L7luGmi9TbTRXp6uY5MHJHTKG9 yBd0nMY5Wz0lHLSZjRExaE= Received: from localhost.localdomain (unknown [49.76.221.145]) by smtp3 (Coremail) with SMTP id DcmowADn4Mjquu5hqn_PAg--.53689S2; Mon, 24 Jan 2022 22:42:50 +0800 (CST) From: wonder_rock@126.com 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 Date: Mon, 24 Jan 2022 22:42:47 +0800 Message-Id: <20220124144247.34525-1-wonder_rock@126.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: DcmowADn4Mjquu5hqn_PAg--.53689S2 X-Coremail-Antispam: 1Uf129KBjvdXoWruF1rZrWftr4UAF1DKr4kJFb_yoW3urb_Ja 4v9rZ5u3WrtF1Y934YyFyakrWv939IvFWIgFs2qFWUtrykJw13AryDZryDZ34DZ3Wqya98 Ga93JrWFvw15ujkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7IUjqYLJUUUUU== X-Originating-IP: [49.76.221.145] X-CM-SenderInfo: xzrqvv5ubu0ubn6rjloofrz/1tbiuQqSgVpD7nNfWQAAsi 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