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 D9E0AC433FE for ; Mon, 21 Nov 2022 19:15:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229552AbiKUTPN (ORCPT ); Mon, 21 Nov 2022 14:15:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44682 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229645AbiKUTOy (ORCPT ); Mon, 21 Nov 2022 14:14:54 -0500 Received: from mail-pl1-f169.google.com (mail-pl1-f169.google.com [209.85.214.169]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2878B61768; Mon, 21 Nov 2022 11:14:52 -0800 (PST) Received: by mail-pl1-f169.google.com with SMTP id jn7so9605340plb.13; Mon, 21 Nov 2022 11:14:52 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=LForrfw/k4kDBmpFT/eGtENaxzc1S7hFGEnquIpgcGI=; b=bfCe9HZQgalQtLkQdZb0zxWBRKaJ0aAaMSr4r+3df/7q8Bk4m3ugp3Xo/zhhyHPlN6 +cRrQoY9Fh7OzBwDLAjqx13q8Mt/M66xU086aGwLxPBQZHcxPZL3wwjsnEOLyeI4ZTcj UUAXw0fhvUOA1W6UfsOF9Cg3f2+lwZ4or4sywQfeKxnW1ovvrdxcV3uGV0eD9k1pjYdn bqAFVnOWRI1QR9c8IS25cf8z9ZLaAO+CWuNqcVnnpLQe6NlrnqHT5dK703GD4uJcL6zF k2luIcEu3GbubiK45++zZrWrmYzR09FAnKHleOk5U41kdzd0eaVtbjhTm/O6nsDODRTO ztZg== X-Gm-Message-State: ANoB5pknGcT0k7bqPFAAHGmRVN8B2vZl7yB3GWVSZpUqj1PYVvcSsJkv 0nlC6/cxTBDdfMpHcFdajbL/ICMJ2dI= X-Google-Smtp-Source: AA0mqf4Mn37XOmi0UK54FjPQM0Ylag6LcAD2uUA69TZL/zh+QUotfv8YF1utw0FPCTxUhZKU05z9AQ== X-Received: by 2002:a17:90b:b17:b0:218:a733:25ec with SMTP id bf23-20020a17090b0b1700b00218a73325ecmr9090982pjb.152.1669058091521; Mon, 21 Nov 2022 11:14:51 -0800 (PST) Received: from ?IPV6:2620:15c:211:201:545d:bfd:7b53:8e94? ([2620:15c:211:201:545d:bfd:7b53:8e94]) by smtp.gmail.com with ESMTPSA id b8-20020a1709027e0800b0016c0c82e85csm10102490plm.75.2022.11.21.11.14.49 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 21 Nov 2022 11:14:50 -0800 (PST) Message-ID: Date: Mon, 21 Nov 2022 11:14:48 -0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.4.0 Subject: Re: [PATCH 0/3] mmc: Improve block layer requeueing behavior Content-Language: en-US To: Adrian Hunter , =?UTF-8?Q?Christian_L=c3=b6hle?= , "axboe@kernel.dk" , "ulf.hansson@linaro.org" , "linux-mmc@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-block@vger.kernel.org" , Christoph Hellwig Cc: Avri Altman , "vincent.whitchurch@axis.com" References: <5df2c4d5-f426-e3ea-8e6d-f772ec7091b6@intel.com> From: Bart Van Assche In-Reply-To: <5df2c4d5-f426-e3ea-8e6d-f772ec7091b6@intel.com> 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 11/21/22 00:25, Adrian Hunter wrote: > On 18/11/22 19:27, Bart Van Assche wrote: >> On 11/18/22 02:47, Adrian Hunter wrote: >>> Does anyone know why the block layer does not support >>> (max_hw_sectors << 9) < PAGE_SIZE ? >> >> Does this mean that the following patch series would not only be >> useful for UFS but also for MMC? "[PATCH 00/10] Support DMA segments >> smaller than the page size" >> (https://lore.kernel.org/linux-block/20221019222324.362705-1-bvanassche@acm.org/). > > That patchset still does not allow max_hw_sectors = 1 which is > what Christian's case needs. Hi Adrian, Why would that patch series not support max_hw_sectors = 1? What am I overlooking? Thanks, Bart.