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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 73279C433EF for ; Wed, 27 Oct 2021 03:03:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5061561074 for ; Wed, 27 Oct 2021 03:03:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237549AbhJ0DFc (ORCPT ); Tue, 26 Oct 2021 23:05:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57706 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236459AbhJ0DFc (ORCPT ); Tue, 26 Oct 2021 23:05:32 -0400 Received: from mail-io1-xd2f.google.com (mail-io1-xd2f.google.com [IPv6:2607:f8b0:4864:20::d2f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E8E07C061570 for ; Tue, 26 Oct 2021 20:03:07 -0700 (PDT) Received: by mail-io1-xd2f.google.com with SMTP id v65so1906646ioe.5 for ; Tue, 26 Oct 2021 20:03:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20210112.gappssmtp.com; s=20210112; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language:content-transfer-encoding; bh=omKeu29+ryItY7DLSJ7AbPWyTJqOXcPm2RufUXYz74E=; b=ZgegrBRE+ea0GGZnA8IfRhTfh19ZufmPqkwRongRQWVR6ezc1XQXsJXoXgkoaq0vjD UJpV/7XHAe1VQi6UmvV9LgixPrfNcOMmZD3hqFg2pIw+n3CydCZqINCkd3TGA3eiTyLg a0vC7HrxarDpxuwGv9J0DkisQ7/wnqVlqE00ppiGgno+A4DtFwxKJJILu/6yRrbqPhkD ZUgM61HCrXvsViTtLYCG9FlimfJKn8BVOnNzLKujU+ILCpRnlLygdvRM0zhzq7Hw+joq KOGCSPdKpMAtvyQ6VCdVmaE/XzoAud35Pf/jq4nMkzDzuOHPkqNhbuuEu93MTFA+ksFr 9QfA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=omKeu29+ryItY7DLSJ7AbPWyTJqOXcPm2RufUXYz74E=; b=yAilMC8ONR7IS3wjzDhUL20ymzNipdwRvxnSOLrmioPvgUXdNHFhToGGs7k6dyTE71 esUwbW3SzdKC29aDZznp0aW6a+KoRSGfsEUrHO5zH8Ri1+juw/PsTN4corpGyKpTujAB IflFHWFooh5hk7MYdy5k0n44DAJ2Ube1uPRbe3sq/S/lml2bNCeN8mufDCcRebungDn+ X8lBTSLywkxciYUkRWNX2joW5AicD8Rwj0xAxdUif22rIBLMyj74Uh7j4KZ8rZaVBp74 yNSfKlDsd3loJXICWdXmQIhru4Y/6o9cXaqyY7nRpSA8X4+JwPRf5U7lqtBUiHXdptf5 b/3w== X-Gm-Message-State: AOAM530TE5fnkL0K+Sl6dW1FHcnHu5WzDjx5MpFX3wbdyKPFbgNsSvw5 uC3x5IWplYZLIlcls9JG+stD4Q== X-Google-Smtp-Source: ABdhPJzUEdzdye8317F6uiPURMPbYz4MGyb1FFCANKFMSNj8CoPQuFy2Ranf3nqsHx5xdVm06eAANQ== X-Received: by 2002:a6b:c94b:: with SMTP id z72mr17404466iof.101.1635303787203; Tue, 26 Oct 2021 20:03:07 -0700 (PDT) Received: from [192.168.1.116] ([66.219.217.159]) by smtp.gmail.com with ESMTPSA id i15sm11770000ilu.24.2021.10.26.20.03.06 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 26 Oct 2021 20:03:06 -0700 (PDT) Subject: Re: [PATCH v9 0/5] Initial support for multi-actuator HDDs To: Damien Le Moal , "linux-block@vger.kernel.org" , "linux-ide@vger.kernel.org" , "Martin K . Petersen" , "linux-scsi@vger.kernel.org" References: <20211027022223.183838-1-damien.lemoal@wdc.com> From: Jens Axboe Message-ID: <64a81be7-ef62-8f8c-bfdc-759e04530366@kernel.dk> Date: Tue, 26 Oct 2021 21:03:04 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On 10/26/21 8:49 PM, Damien Le Moal wrote: > On 2021/10/27 11:38, Jens Axboe wrote: >> On 10/26/21 8:22 PM, Damien Le Moal wrote: >>> From: Damien Le Moal >>> >>> Single LUN multi-actuator hard-disks are cappable to seek and execute >>> multiple commands in parallel. This capability is exposed to the host >>> using the Concurrent Positioning Ranges VPD page (SCSI) and Log (ATA). >>> Each positioning range describes the contiguous set of LBAs that an >>> actuator serves. >>> >>> This series adds support to the scsi disk driver to retreive this >>> information and advertize it to user space through sysfs. libata is >>> also modified to handle ATA drives. >>> >>> The first patch adds the block layer plumbing to expose concurrent >>> sector ranges of the device through sysfs as a sub-directory of the >>> device sysfs queue directory. Patch 2 and 3 add support to sd and >>> libata. Finally patch 4 documents the sysfs queue attributed changes. >>> Patch 5 fixes a typo in the document file (strictly speaking, not >>> related to this series). >>> >>> This series does not attempt in any way to optimize accesses to >>> multi-actuator devices (e.g. block IO schedulers or filesystems). This >>> initial support only exposes the independent access ranges information >>> to user space through sysfs. >> >> I've applied 1/9 for now, as that clearly belongs in the block tree. >> Might be the cleanest if SCSI does a post tree that depends on >> for-5.16/block. Or I can apply it all as they are reviewed. Let me >> know. > > Forgot: They are all reviewed, including Martin who sent a Reviewed-by for the > series, but not an Acked-by for patch 2. As for libata patch 3, obviously, this > is Acked-by me. Queued up 2-5 in the for-5.16/scsi-ma branch. -- Jens Axboe