From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 21A9E2980A1; Tue, 24 Jun 2025 12:53:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.50.34 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750769608; cv=none; b=ZDJbd93IjPcxtBwtpRQ98TMxzZ+OJz6FMx6QcD2gJ4gJ4rDdenyvUhSpqNryNInKAe6pljx4k0n8UG/KZjn2bXywzikudroPljTcKvxpMHOv5Cp1ZpC8NUTf/KPB9oZz6jX/GNWNqNSSc36QenM02S0t99t8I2+U9RQUymUBxx8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750769608; c=relaxed/simple; bh=lDhi+BIDGL5bKLP98ouQ4UZdNdMsRKpcE2ec84G9+Fs=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=sQrUY9H+y2uQbD0uwpiJq9Eqt2PpWFJiNtjc1B1T1G3uymU9eVd0YW/BeEJu/J0Akwnka5MLYmGUHCV/BECUKii0Nq5pFtqZrdlORr5y8p+m1KYeYuqVPbnnwB/SPhXEoAugQhd2S5qAfUVBb3Ryw5zdE9f90d0OQVk/URIugmc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=SvGrCJky; arc=none smtp.client-ip=90.155.50.34 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="SvGrCJky" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Transfer-Encoding: Content-Type:MIME-Version:References:Message-ID:Subject:Cc:To:From:Date: Sender:Reply-To:Content-ID:Content-Description; bh=CA0gRHgVNTMmOjEFtJrjmYAGBNlumVx52ytcBXwtLbg=; b=SvGrCJkyHUkMDWLbncCrTbiOjh Dou6AeoGwYupemLSL1zUA8qNSk8Nbf0aoIOdQ3tgLjPs151dIEwglExc5T8LF0mXXN5s6BDJw33/5 Ppz6grfi0RcQtQuP/hw3jxkulraB3D3tqUvPoWGV6KZKCEIXLzsAa3l3NapGk827B4BrLNJDvdk7R tvYobWi/+SX+b9zqFth5AwXv+BT9UYrH2oHbspGStbfb9i41hdakfNxF4VACldGWfDMpUfNJmekaG 6BlA4wKLvKJokDhqOLwy9aGIqlAVHdJe944XvxTYb0RNzkUNaBJ51tuKCBNQP8eC3CzoDl0lEgG+A n3IbIxGA==; Received: from willy by casper.infradead.org with local (Exim 4.98.2 #2 (Red Hat Linux)) id 1uU39M-00000006c80-2n5d; Tue, 24 Jun 2025 12:53:20 +0000 Date: Tue, 24 Jun 2025 13:53:20 +0100 From: Matthew Wilcox To: =?utf-8?B?6ZmI5rab5rab?= Taotao Chen Cc: "tytso@mit.edu" , "hch@infradead.org" , "adilger.kernel@dilger.ca" , "brauner@kernel.org" , "jani.nikula@linux.intel.com" , "rodrigo.vivi@intel.com" , "tursulin@ursulin.net" , "airlied@gmail.com" , "linux-fsdevel@vger.kernel.org" , "linux-ext4@vger.kernel.org" , "linux-block@vger.kernel.org" , "intel-gfx@lists.freedesktop.org" , "dri-devel@lists.freedesktop.org" , "linux-mm@kvack.org" , "linux-doc@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "chentao325@qq.com" Subject: Re: [PATCH v2 5/5] ext4: declare support for FOP_DONTCACHE Message-ID: References: <20250624121149.2927-1-chentaotao@didiglobal.com> <20250624121149.2927-6-chentaotao@didiglobal.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20250624121149.2927-6-chentaotao@didiglobal.com> On Tue, Jun 24, 2025 at 12:12:10PM +0000, 陈涛涛 Taotao Chen wrote: > From: Taotao Chen > > Set the FOP_DONTCACHE flag in ext4_file_operations to indicate that > ext4 supports IOCB_DONTCACHE handling in buffered write paths. I think this patch should be combined with the previous patch so we see all the change needed to support DONTCACHE in one patch.