From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 C0CD01DE4D2; Wed, 25 Jun 2025 06:56:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750834592; cv=none; b=qxdf7AW3Yy9CSMOpS5bkx179P3MGbkbWnNaF67mMDFPWYnBwnyPiLQmLk2J1X/v4qb5U7xFeYnSKOHu9mQ7qGM/feRPvT85Nj2eDEsOVVJxbC1bIiYL47p9/lsOj4GLaDL33k4c944CpwNQwHeyPrbcToDyfnqmpykD7wgb4hAs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750834592; c=relaxed/simple; bh=Uh1WwnNvimTsWyoQ0hTnqc/W/jE8I7xFNWmTFet+yG8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Qz6lH2Mz0JT88inTB/aLTH33Y0bjN3D3ZdsMcrjvZplbDxecshBQx5QewMyUUvoW+rCK7s740W0R0PZK4KoGXJWzyKJ3MyvHK5Y9/mAmSa0eEKQK/qLgbLuxaM+kc0Ga5LgI06o2chs6AxYODBhBI9UKm9oc7zFbvg6UH9senwY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=CgIypNKh; arc=none smtp.client-ip=198.137.202.133 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=bombadil.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="CgIypNKh" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; 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; bh=Uh1WwnNvimTsWyoQ0hTnqc/W/jE8I7xFNWmTFet+yG8=; b=CgIypNKhmQ3029o1RKULsD2Xwj vR4Dylx++/bDN9hEqSwPvw/3ZAfijYzkWi80sgOWXNcBE7uDwW/nADhc3mj691cB+/aauczS0ueB1 W1+4ny5XmQr4weZuy0cERCCzvlxXH7Ezo683DTg3ESOh87r42tGjM354mfQfI5d41GxF4fgoRQ4Pm LyUNeB4Hq7HT2iCqF9DYpXYKF2aS9MwtV0XMecqbBn51oEpybU8HvkCxJ+dp4WtUnA8iYlsJySN+Q YaRTV1EMoqBPLzBiT044IAGB6t7McuLAwZUq0PHXYqREJiEZmCJoBFR4uydwPbtL5TsQvkp98FRm9 Jjlg8naA==; Received: from hch by bombadil.infradead.org with local (Exim 4.98.2 #2 (Red Hat Linux)) id 1uUK3X-00000007k2q-0N1j; Wed, 25 Jun 2025 06:56:27 +0000 Date: Tue, 24 Jun 2025 23:56:27 -0700 From: "hch@infradead.org" To: =?utf-8?B?6ZmI5rab5rab?= Taotao Chen Cc: "tytso@mit.edu" , "hch@infradead.org" , "adilger.kernel@dilger.ca" , "willy@infradead.org" , "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 0/5] fs: refactor write_begin/write_end and add ext4 IOCB_DONTCACHE support Message-ID: References: <20250624121149.2927-1-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=us-ascii Content-Disposition: inline In-Reply-To: <20250624121149.2927-1-chentaotao@didiglobal.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Thanks, I really like the i915 work to stop the shmem abuse. I still hate it that we just change the write_begin/end ops while still in the address_space ops vs passing explicit callbacks, because that means we'll some other version of that abuse back sooner or later :(