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 X-Spam-Level: X-Spam-Status: No, score=-3.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7750FC4320A for ; Tue, 17 Aug 2021 08:07:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5A5B760F22 for ; Tue, 17 Aug 2021 08:07:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238669AbhHQIHp (ORCPT ); Tue, 17 Aug 2021 04:07:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52484 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234648AbhHQIHi (ORCPT ); Tue, 17 Aug 2021 04:07:38 -0400 Received: from mail-ua1-x929.google.com (mail-ua1-x929.google.com [IPv6:2607:f8b0:4864:20::929]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8E1F6C061764 for ; Tue, 17 Aug 2021 01:07:05 -0700 (PDT) Received: by mail-ua1-x929.google.com with SMTP id b26so6437153uam.13 for ; Tue, 17 Aug 2021 01:07:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=szeredi.hu; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=CeT7/CgVvEfQsAhRqPkoAVPoIIWJXiZlPWeu07uodXc=; b=g88CnCFFPOXT/19Ud163ryRrpOrBR+Hl81zf2AY3pqDq/ZNX8KP0ecWQtiMTl8M7mK nzft7IyzCcBoJ1qQIY1h3H0kUryG3f+3EKuea03JxjuUvKc+4hiUFX0cdt+eeEKSYIk7 UOUGgeCRY+Y1U+Y8vFJrnCJfJmwfChTjl87mc= 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=CeT7/CgVvEfQsAhRqPkoAVPoIIWJXiZlPWeu07uodXc=; b=bZs3kPH2fg9etN5+Bn8zkiy7OWTo7duxsSIQvAtk/xSoLx875oEoO7JRMnqFdZzOL7 Haa3goWmz4mufZt9E8nOgQmF6MLlf5P3dIZ3iEaVfPm2HRqfbWZBbZZwcAEmGByllaxf B498OS95AW9xx2+ax5ohIz3jUgYEpJNAy74Op7zZ4tWzQUqC0XZj+B7mpcitLb30I+vl RhclTWSB8GyX/7JCHzY1bYKdS8ovffLErMOGYj1Gtzv/3i2ZoeNlcd6vd5BtWhGO8baA Y1Z+j+IT3UFgGQVLq6bGMZ1iWOxp+TkgL2mVm0pziWxMnmia+/sUIgGz2UMNhY24DGjX PhhQ== X-Gm-Message-State: AOAM5331Xe8KO5fUCLH1W6gDoPo/sC1nZCteMvZ62lmZrzWrVByrXTT0 z/uq9eZKmqbnRmm/X8lcJoIDDvgKK0u1P22nF6WJLg== X-Google-Smtp-Source: ABdhPJykt8oCzcvvJjQbvrLkP2n3MDy7yGcwWFGAQ1by1xX/HdIgGAQ7G1VOJpi3lRkoegCF2LcE/BkhBEZdIZDMvsE= X-Received: by 2002:ab0:3757:: with SMTP id i23mr1250024uat.72.1629187624677; Tue, 17 Aug 2021 01:07:04 -0700 (PDT) MIME-Version: 1.0 References: <20210817022220.17574-1-jefflexu@linux.alibaba.com> In-Reply-To: <20210817022220.17574-1-jefflexu@linux.alibaba.com> From: Miklos Szeredi Date: Tue, 17 Aug 2021 10:06:53 +0200 Message-ID: Subject: Re: [PATCH v4 0/8] fuse,virtiofs: support per-file DAX To: Jeffle Xu Cc: Vivek Goyal , Stefan Hajnoczi , linux-fsdevel@vger.kernel.org, virtualization@lists.linux-foundation.org, virtio-fs-list , Joseph Qi , Liu Bo Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On Tue, 17 Aug 2021 at 04:22, Jeffle Xu wrote: > > This patchset adds support of per-file DAX for virtiofs, which is > inspired by Ira Weiny's work on ext4[1] and xfs[2]. Can you please explain the background of this change in detail? Why would an admin want to enable DAX for a particular virtiofs file and not for others? Thanks, Miklos From mboxrd@z Thu Jan 1 00:00:00 1970 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=szeredi.hu; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=CeT7/CgVvEfQsAhRqPkoAVPoIIWJXiZlPWeu07uodXc=; b=g88CnCFFPOXT/19Ud163ryRrpOrBR+Hl81zf2AY3pqDq/ZNX8KP0ecWQtiMTl8M7mK nzft7IyzCcBoJ1qQIY1h3H0kUryG3f+3EKuea03JxjuUvKc+4hiUFX0cdt+eeEKSYIk7 UOUGgeCRY+Y1U+Y8vFJrnCJfJmwfChTjl87mc= MIME-Version: 1.0 References: <20210817022220.17574-1-jefflexu@linux.alibaba.com> In-Reply-To: <20210817022220.17574-1-jefflexu@linux.alibaba.com> From: Miklos Szeredi Date: Tue, 17 Aug 2021 10:06:53 +0200 Message-ID: Content-Type: text/plain; charset="UTF-8" Subject: Re: [Virtio-fs] [PATCH v4 0/8] fuse,virtiofs: support per-file DAX List-Id: Development discussions about virtio-fs List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Jeffle Xu Cc: virtualization@lists.linux-foundation.org, virtio-fs-list , Joseph Qi , linux-fsdevel@vger.kernel.org, Vivek Goyal On Tue, 17 Aug 2021 at 04:22, Jeffle Xu wrote: > > This patchset adds support of per-file DAX for virtiofs, which is > inspired by Ira Weiny's work on ext4[1] and xfs[2]. Can you please explain the background of this change in detail? Why would an admin want to enable DAX for a particular virtiofs file and not for others? Thanks, Miklos