From mboxrd@z Thu Jan 1 00:00:00 1970 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 EDA65C433EF for ; Wed, 2 Feb 2022 18:41:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346703AbiBBSlF (ORCPT ); Wed, 2 Feb 2022 13:41:05 -0500 Received: from mail-pg1-f180.google.com ([209.85.215.180]:37510 "EHLO mail-pg1-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241250AbiBBSlD (ORCPT ); Wed, 2 Feb 2022 13:41:03 -0500 Received: by mail-pg1-f180.google.com with SMTP id e16so256806pgn.4; Wed, 02 Feb 2022 10:41:03 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=4SeKf0Pv3KI7vfINkFZfYLytziKJBKAleO/0SVcLdYY=; b=ZuWuI9db92GS8ouskq74uFfOm27ZtZdXqdwS/nnq8rqfNuQZWKqJjcAPc+4+ksdAB7 txnFBHGwvJ3/1s1SfJ2YrJCrEJxEDYjLievwD7uqHDuDcZOarDGtBXXzf8F3rWqKKabG ERRLpSdPHOofEv6i8nx6gLLyXDkySs/0WOCeQKRU5FHHotLTtBYNLxZBgOFcq4RORzni ZKADn7sSBdPNpvJ8ZHQLCdDIW7hl+4yPTqBdE+9A8GOqdoxuDER+IsMbbvHdIWfcYmGC p0ipRKz6pLYFyubJ8vnd4gMMqDRSYobs2LPqIyWwaT0PPSPdGtOIkko9Okjz7m5M+rzF ZGeQ== X-Gm-Message-State: AOAM530AY5/nEktDkd11p+RguJHywwoYyNUr4IXEn/2u1yqt1qFJxOkj hA09emXgm/49Zb3EAoeYk6Y= X-Google-Smtp-Source: ABdhPJxKTvuMXBDvU4qW2/15ak/LKcMtqbqZF8vB1gLRYjaQ1c1OMJyU+DSvLA0785Up6vFD7FG4mg== X-Received: by 2002:a63:6844:: with SMTP id d65mr12349403pgc.56.1643827263302; Wed, 02 Feb 2022 10:41:03 -0800 (PST) Received: from [192.168.51.110] (c-73-241-217-19.hsd1.ca.comcast.net. [73.241.217.19]) by smtp.gmail.com with ESMTPSA id j10sm26668742pfu.93.2022.02.02.10.41.01 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 02 Feb 2022 10:41:02 -0800 (PST) Message-ID: <60060901-acd0-5b39-6d0f-13b0359b756d@acm.org> Date: Wed, 2 Feb 2022 10:40:59 -0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.5.0 Subject: Re: [PATCHv2 6/7] block: add pi for nvme enhanced integrity Content-Language: en-US To: Keith Busch , linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org Cc: axboe@kernel.dk, hch@lst.de, martin.petersen@oracle.com, colyli@suse.de References: <20220201190128.3075065-1-kbusch@kernel.org> <20220201190128.3075065-7-kbusch@kernel.org> From: Bart Van Assche In-Reply-To: <20220201190128.3075065-7-kbusch@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2/1/22 11:01, Keith Busch wrote: > + ref = get_unaligned_be48(pi->ref_tag); > + seed = iter->seed & 0xffffffffffffull; The "& 0xffffffffffffull" operation occurs three times in this patch. Has it been considered to introduce a lower_48_bits() function? Thanks, Bart.