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[209.132.180.67]) by mx.google.com with ESMTP id l35si44187563plb.186.2019.08.06.17.11.22; Tue, 06 Aug 2019 17:11:38 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@google.com header.s=20161025 header.b=UNuxmD35; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726663AbfHGAKR (ORCPT + 99 others); Tue, 6 Aug 2019 20:10:17 -0400 Received: from mail-qt1-f195.google.com ([209.85.160.195]:44734 "EHLO mail-qt1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726133AbfHGAKR (ORCPT ); Tue, 6 Aug 2019 20:10:17 -0400 Received: by mail-qt1-f195.google.com with SMTP id 44so55496432qtg.11 for ; Tue, 06 Aug 2019 17:10:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=zPy6c5lKRqWhHCVvQSPB2eQWatU5KxqafbBHRjUyLkQ=; b=UNuxmD35ivjOkCYHrqTH0HW+EZ+v5dZqTwX/rMaL4yahcfN+wstqI4yahnZhsMjyIj LlIQ5vfVc7AoFHUsTFbpWP8TDNqdDG+akh8ocNQchufv1r8XlMxmsi+xmJadKkqwKFAw T3zqGrCYTBTK3z9NpTfHSM2EMoingc0tBCzgboXl/yUZUzY2nl7SQpKxHV4bvix99Ppr bJ6dD5W2dAJgc8VGTy6+6G8WKfQw7/RrLWLUKtKf1M+rFwzO6mAEghVmAxkqPlbVwig9 aL3e64WDjjwtnbTcP0R9euiCEZa8LsSWBXbR02Fbi6kIIPl7T/lNEjahq+vTOCBzcjO4 KwiA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=zPy6c5lKRqWhHCVvQSPB2eQWatU5KxqafbBHRjUyLkQ=; b=mVGtI5BGIswKr0g6Cn9aGAgbAoWV9o0AkLH+bcADZvcvMP+529wrL2sGIECC3LfQzO scx9wqmjLNOAYyLpl6DlPR5rdR1SSa+ppI3vHQxtZAqkI7rBqVQIkdnemlPstA+R0Fma RcxLgnDWTnrIkBrvXYdkdrMVB6XtzXlq8HQ0Nuz+YgQsKtTV+rvCvY1NKm6EodHuhQV8 vXEH7oUxK2UTPkIP8CF1kLuo/u25z0w+18lsq3Kf5WUPBW5RS+dMub0WS8yucMjLTr/j ZkwwmKmLys4RpmnpM4NsQ97YY0UfStLBeTYvLH7+fcpd3bfLnSR+w4/uXXmW6gFbtd/J XRGA== X-Gm-Message-State: APjAAAUIPl/un7VHOQu4xrg2++uvxj0proAit3DozjrDhaTCfIFF7Hwm bKj5mMtOh0+PYR9ZFzwlONx9jdF5QGJK5Nq8pzK/kQ== X-Received: by 2002:a0c:ae5a:: with SMTP id z26mr5561475qvc.65.1565136616288; Tue, 06 Aug 2019 17:10:16 -0700 (PDT) MIME-Version: 1.0 References: <20190806220524.251404-1-balsini@android.com> <20190806235708.GA10161@google.com> In-Reply-To: <20190806235708.GA10161@google.com> From: Joel Fernandes Date: Tue, 6 Aug 2019 20:10:05 -0400 Message-ID: Subject: Re: [PATCH] loop: Add LOOP_SET_DIRECT_IO in compat ioctl To: Alessio Balsini Cc: "open list:BLOCK LAYER" , LKML , Jens Axboe , dvander@gmail.com, Yifan Hong , Greg Kroah-Hartman , "Cc: Android Kernel" Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Aug 6, 2019 at 7:57 PM Alessio Balsini wrote: > > Hi Joel, > > I was considering the rationale for this patch totally straightforward: > it enables Direct I/O ioctl to 32 bit processes running on 64 bit > systems for compatibility reasons, as for all the other lo_compat_ioctl > commands. > Also the reason why someone would decide to use Direct I/O with loop > devices is well known, that is why the feature exists :) So I thought > this was another redundant information to put in the commit message and > decided to omit it. No objections from me if maintainers are Ok with it. > If you still think that I should update the commit message with this > information, I will do so. I think you should. thanks, - Joel