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 14A63C433F5 for ; Wed, 10 Nov 2021 19:09:10 +0000 (UTC) Received: from lists.sourceforge.net (lists.sourceforge.net [216.105.38.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D1080610A0; Wed, 10 Nov 2021 19:09:09 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org D1080610A0 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.sourceforge.net Received: from [127.0.0.1] (helo=sfs-ml-1.v29.lw.sourceforge.com) by sfs-ml-1.v29.lw.sourceforge.com with esmtp (Exim 4.94.2) (envelope-from ) id 1mksy3-0006jS-8z; Wed, 10 Nov 2021 19:09:08 +0000 Received: from [172.30.20.202] (helo=mx.sourceforge.net) by sfs-ml-1.v29.lw.sourceforge.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1mksy1-0006jL-M1 for linux-f2fs-devel@lists.sourceforge.net; Wed, 10 Nov 2021 19:09:06 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=In-Reply-To:Content-Type:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=6/nD6RHPMbEX2XmCimwrFP17MrEDyh3byENIqq7uyKM=; b=AEvuTpub0qy/8IS+zaY46sOEPF fZ3J/Tfin6WAmNQ65B7DyapcV0YgfaaeblZyeC0DsOouC7lelDlCGG07bsF0IiV+hk4siYifI7Jcn OFWaQkt4eQWGjRxHCEfIBjPBs8NCq5AnLzUCR03yzFSamdWGDKK+Zxpkom3IHGMbBnug=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=In-Reply-To:Content-Type:MIME-Version:References:Message-ID:Subject:Cc:To :From:Date:Sender:Reply-To:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=6/nD6RHPMbEX2XmCimwrFP17MrEDyh3byENIqq7uyKM=; b=VobZOVWGMg0aeOC8vRDI6CdCx8 OZX0VyToNLAax5qN4dKQcvHMbzPLn0USxUb7F8TUp3tlQ52cyyYKLVtdoiiLrVEvxIxDyB6RVoa4R 1RVfY5JGtsAUtQPCdEjUiDNVXmHli9vdxLNYyoE9d0MXfPSlQ5TSqgjtpxTR70OSUPkM=; Received: from mail.kernel.org ([198.145.29.99]) by sfi-mx-2.v28.lw.sourceforge.com with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.92.3) id 1mksy2-0005Vv-8C for linux-f2fs-devel@lists.sourceforge.net; Wed, 10 Nov 2021 19:09:06 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id B84C961077; Wed, 10 Nov 2021 19:08:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1636571335; bh=/nlf8a6pijn/h9Jdun7z44dTvfnUp17fW2yftSoPyRI=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=KI2Dy0nHL566ZVbhotl37oq3zis86my26aRiwp23gDxMbYLh4CW2ATAArBqyACntA PdAmISJzZ4fxYBJ9UhMhAEIdM8N2kEWrA31LetW0jWXNY79LZvPU4M3B0w99rZnluf 9+tMU62qpoEf9qc0LjufjQa8czLmCMzHeP5ldgmyE4fT75bI9bYA/B13nya1S6YmAQ LWXs+JOk0EB+kvsJRy3UXPk0XaVpnF0b9Ws+SPNaIUvmKiFKxIK2M5vCdEjeJ0XCzR 1uqjWsFEHdqA4MXiiNocLTXraZWbQ83HppyRyu+HXnuptAydLfTcJIF7NTrQjPOKh9 VqAvFrp8IrWnA== Date: Wed, 10 Nov 2021 11:08:54 -0800 From: Jaegeuk Kim To: Jens Axboe Message-ID: References: <20211109021336.3796538-1-jaegeuk@kernel.org> <042997ce-8382-40fe-4840-25f40a84c4bf@kernel.dk> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <042997ce-8382-40fe-4840-25f40a84c4bf@kernel.dk> X-Headers-End: 1mksy2-0005Vv-8C Subject: Re: [f2fs-dev] [PATCH] f2fs: provide a way to attach HIPRI for Direct IO X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Christoph Hellwig , linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net On 11/09, Jens Axboe wrote: > On 11/9/21 9:39 AM, Christoph Hellwig wrote: > > On Mon, Nov 08, 2021 at 06:13:36PM -0800, Jaegeuk Kim wrote: > >> This patch adds a way to attach HIPRI by expanding the existing sysfs's > >> data_io_flag. User can measure IO performance by enabling it. > > > > NAK. This flag should only be used when explicitly specified by > > the submitter of the I/O. > > Yes, this cannot be set in the middle for a multitude of reasons. I wonder > if we should add a comment to that effect near the definition of it. Not surprising. I was wondering we can add this for testing purpose only. Btw, is there a reasonable way that filesystem can use IO polling? > > -- > Jens Axboe _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel