Received: by 2002:a05:6a10:2726:0:0:0:0 with SMTP id ib38csp1693968pxb; Wed, 30 Mar 2022 08:27:48 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzz6zlm5X9WFlI1axXEoGHeK0PzdsrdfcK4rRjw+BAmFwJR1Enz+/TLVFq3vcrka7zrpZBD X-Received: by 2002:aa7:c793:0:b0:408:4a69:90b4 with SMTP id n19-20020aa7c793000000b004084a6990b4mr11194651eds.58.1648654068306; Wed, 30 Mar 2022 08:27:48 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1648654068; cv=none; d=google.com; s=arc-20160816; b=MKIQ8O2uT2IwaKQIYW4xmDq8HYN0DzZ+XbkoHb80EJx9LoXHTg/+0Ss7Ka700l+fjB UxsApg7nz0twvKCwVV5eeRO8V2yzpDcxpCxAAPj2M2J5xNWZCh0wDG9PWckctVZHGpK6 aHEnLBqZa4fKtj7kUWAZCU3C52iLp5P9YXGdAsJWYmIE1mQqQxHhC2KyqYpzqOYx17KX 0abm8VCdYEYflBT9g22mS1OCg2rNiWAPorUC5b1l4Hk6F5UIXijGD8NxaCn8iz6+Pgsg zXIduU35vH6OVtlbJC8i6PCAfqdAhxo1J1a0Hv241OadMmTuz4jTtjTxLEMn0xgBa6GS W5yg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date:dkim-signature; bh=h2YnJL609FPEgpRkzhoG1HhXHB/pO8ZQqPB/p1BAO1w=; b=VzkVFeGWCXpGn1jUdv9+uR5XGi0d/b98t7d2l5JAgP0XbMDSyZxEtgR3L0U90yQcfa WnWPGPNvrTbnFgp93mnjPfJyb43XwT27wdhpPLPn+yMTOF9Zs1vCCvE0JpWi4gDZONqN DBCoHaan3YkLYbrpQ4o4lVOyw6dWgJ0ReOAYw9j65mnaFIjgXd3BSy15aFlzAxrAkbDq kzvwkA74zLNoGy3UgsmN44sTEllE5e7b4F8kaQEN0mbgDGCkOB3KS+BqtoudPiRPK8s1 hE7femmqsKvgXiiwsEFZD4UzaC8dZkhy2EbxLrHwFmaMcsn15mG91N22UBRvfJHC1qgM TT0Q== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=vQkrLMTx; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id f6-20020a170906560600b006df76385ee3si20372230ejq.899.2022.03.30.08.27.18; Wed, 30 Mar 2022 08:27:48 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=vQkrLMTx; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240467AbiC2SLb (ORCPT + 99 others); Tue, 29 Mar 2022 14:11:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55356 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240462AbiC2SL2 (ORCPT ); Tue, 29 Mar 2022 14:11:28 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 96AAA27B05 for ; Tue, 29 Mar 2022 11:09:44 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 5EB96B81813 for ; Tue, 29 Mar 2022 18:09:43 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C0B40C340ED; Tue, 29 Mar 2022 18:09:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1648577381; bh=/pZfUjwnCrvFojpuNSnniNhny5IfONJsKbqaSoUTGXs=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=vQkrLMTxowmVwtRXi8+jjcco1uue4Dlnjq97hDbkfpp0ny71FIETW7bxzZ62Qd+Am H+tm3tHIroup+XG7mmMnkG4p/bI8eZv1Qu1iBuBPunp5inSQoT4AfXC/2IXWet1B2l j6rvuGNPTzq/4m96oUHtdELA7dfDtQzL+ugtVtjSVC91vnl/t0RqtBZaawdmeQ6g1L QVSHStAn/90/5k7VEfB6CC2M9MU65AV+E6AIBC69iFZNepUJun6v4ObJpi0L0pqKT2 ACKS03JR9X02unMsWlirs/0oUlQL70QyLPzdNRGLYKb1AzjO5AciSGsJ9ce6AACg/s wwbrjO2HtZbnQ== Date: Tue, 29 Mar 2022 11:09:40 -0700 From: Jaegeuk Kim To: Chao Yu Cc: linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Subject: Re: [f2fs-dev] [PATCH v3] f2fs: introduce data read/write showing path info Message-ID: References: <20220321223315.3228326-1-jaegeuk@kernel.org> <101f4cb6-37bf-0ac3-3838-7aab7e648352@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <101f4cb6-37bf-0ac3-3838-7aab7e648352@kernel.org> X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/29, Chao Yu wrote: > On 2022/3/29 11:13, Jaegeuk Kim wrote: > > This was used in Android for a long time. Let's upstream it. > > Could you please explain more about its usage? I found ioblame and ioshark in android are using it to understand app/file/IO traffic. Once we have this in AOSP, I'm thinking to change one by one. The android-mainline is also deprecating the custom tracepoints as well. https://android-review.googlesource.com/c/kernel/common/+/2045529 > > > > > Signed-off-by: Jaegeuk Kim > > The code part looks clean. > > Reviewed-by: Chao Yu > > Thanks,