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=-0.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 A0C40C433DF for ; Tue, 2 Jun 2020 12:16:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8155320663 for ; Tue, 2 Jun 2020 12:16:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=android.com header.i=@android.com header.b="Mf9BRQkS" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726606AbgFBMQT (ORCPT ); Tue, 2 Jun 2020 08:16:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38498 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726380AbgFBMQR (ORCPT ); Tue, 2 Jun 2020 08:16:17 -0400 Received: from mail-lj1-x231.google.com (mail-lj1-x231.google.com [IPv6:2a00:1450:4864:20::231]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 68A93C08C5C0 for ; Tue, 2 Jun 2020 05:16:16 -0700 (PDT) Received: by mail-lj1-x231.google.com with SMTP id s1so12309426ljo.0 for ; Tue, 02 Jun 2020 05:16:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=android.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=n4Qy4wUhDH5Xhze+eb6ArM9+MXeHPXd6rx4E89Zh3o0=; b=Mf9BRQkSo6RI1cW7TTfXRtxfIGGr+OWwuRTQSEFJkxZdq4Vi6AF1nkBBgQ8oP/YhrF H0/nXoSFjW4KPwsL1kA2fb2AgZ89LpPodg7HdbKKDWIIsD3IvuEr+a0mtdy7kHzHROb0 zm8QfBjLJ0rXB+3IaCAfH0tBnl4EatcsS1dapBK9iHchRPo70+L8M/VYAxHtQ1T6C/QR o0eOhLwXjLjdvhO0/2UDM1ZyLP59t9nLiZW//MtL2l2wIkRmM7+NuJ7ukJLTpvO64lhA 2tSBsRSl57M8UnyJXUK7OBhuD09MGnodJIGo/dclKNC1CXJpmYRXCrC4M2K5J5O1lCT/ C33A== 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=n4Qy4wUhDH5Xhze+eb6ArM9+MXeHPXd6rx4E89Zh3o0=; b=VoJ+AIpzdXO1JKb1sGkxnDYZdpt6xLxURZp8eQgKogoU2w6yRNNI/vrGfoU1RE3bIm uwIwX9+N64bAyCB83S2ejkZd2HTaIjEzEbxlrpN/NpBcmJD3dQmbrMu1CTadMgPP4wcC m9uvrJZ96cOXVrcfGHzuyN8AS5CZi8eM1JHT27lY4lrd/pDoDIqDFHO/q52M3/v4Jyah XkkFZN5zitxInClEta9qtKLwUF4sdDnDQU2lpBkDNf0D/g/1WeGnf8cOJiGhIouHCmbj vHw2ombUdK06bkZJDlHKxlIn+hKlMXdtHIWk6BzoMWCgd5wpr9FYqYhUYuyp7C5dQk4f USCQ== X-Gm-Message-State: AOAM531vfD9zlGOiednph4FewfkSyLMzqPJKFKsMCtZZC1rwaCSDWzIz Sns4Oxucso7vDCwhSCCNsvYXD4QBC03xOE59CYjX/Q== X-Google-Smtp-Source: ABdhPJz/MQmaRwMBlZrBRQBj7nKunvfyDrbTxaAL2zsuQ89V/bYCS1lJwB4Isa1BAtyheXxEJF+wb59TAr/aT2U3gB0= X-Received: by 2002:a2e:85c4:: with SMTP id h4mr12906405ljj.43.1591100174869; Tue, 02 Jun 2020 05:16:14 -0700 (PDT) MIME-Version: 1.0 References: <20200522144100.GE14199@quack2.suse.cz> <20200522153615.GF14199@quack2.suse.cz> <20200525073140.GI14199@quack2.suse.cz> <20200529152036.GA22885@quack2.suse.cz> <20200601090931.GA3960@quack2.suse.cz> In-Reply-To: <20200601090931.GA3960@quack2.suse.cz> From: Martijn Coenen Date: Tue, 2 Jun 2020 14:16:03 +0200 Message-ID: Subject: Re: Writeback bug causing writeback stalls To: Jan Kara Cc: Jaegeuk Kim , Al Viro , Jens Axboe , miklos@szeredi.hu, tj@kernel.org, linux-fsdevel@vger.kernel.org, LKML , kernel-team@android.com Content-Type: text/plain; charset="UTF-8" Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On Mon, Jun 1, 2020 at 11:09 AM Jan Kara wrote: > Thanks for testing! My test run has completed fine so I'll submit patches > for review. But I'm curious what's causing the dips in throughput in your > test... It turned out to be unrelated to your patch. Sorry for the noise! We have the patch in dogfood on some of our devices, and I will let you know if we run into any issues. I'll also spend some more time reviewing your patches and will respond to them later. Thanks, Martijn > > Honza > > -- > Jan Kara > SUSE Labs, CR