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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6027EC04A94 for ; Mon, 24 Jul 2023 20:16:15 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id F0CF46B0075; Mon, 24 Jul 2023 16:16:14 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id EBD536B0078; Mon, 24 Jul 2023 16:16:14 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id DAC898E0001; Mon, 24 Jul 2023 16:16:14 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id CB3376B0075 for ; Mon, 24 Jul 2023 16:16:14 -0400 (EDT) Received: from smtpin27.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id 9EC2CB22D5 for ; Mon, 24 Jul 2023 20:16:14 +0000 (UTC) X-FDA: 81047612268.27.6E87234 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by imf29.hostedemail.com (Postfix) with ESMTP id E179912000F for ; Mon, 24 Jul 2023 20:16:12 +0000 (UTC) Authentication-Results: imf29.hostedemail.com; dkim=pass header.d=infradead.org header.s=bombadil.20210309 header.b=O7F9hoVV; spf=none (imf29.hostedemail.com: domain of mcgrof@infradead.org has no SPF policy when checking 198.137.202.133) smtp.mailfrom=mcgrof@infradead.org; dmarc=fail reason="No valid SPF, DKIM not aligned (relaxed)" header.from=kernel.org (policy=none) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1690229773; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=tgMGRzESWkQ+jza5LIM+2YG5UUtrxuCLlNlof8Ub3HI=; b=LOqOcq8QhcZtrjU60NnDARENvnscXY3JL4Nl1C4v0sKObgH7jKUlMY5pucih9Ow5R0dhSB qkBP4JbLJLw7jdmAoxT8EqeCNuzi10VHUSaTVRgmt55kdvMoV20EGnYsa9oC8dZ/vleZ4H hjYDJ4KfpsRMFFQTb5KbfwexHs2h1/U= ARC-Authentication-Results: i=1; imf29.hostedemail.com; dkim=pass header.d=infradead.org header.s=bombadil.20210309 header.b=O7F9hoVV; spf=none (imf29.hostedemail.com: domain of mcgrof@infradead.org has no SPF policy when checking 198.137.202.133) smtp.mailfrom=mcgrof@infradead.org; dmarc=fail reason="No valid SPF, DKIM not aligned (relaxed)" header.from=kernel.org (policy=none) ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1690229773; a=rsa-sha256; cv=none; b=xlIlh3OVkJzWy6beqwQk4o5miWWOmkToRDVJgpriUlq81Zj0F2hfiP89POHE78H62QB/Ig m++TPerDyMB3CGtYZNxtWUTytVajCQhzFMw7XMZP6FEk54wq59HwOnfI2XlKzcHF3ypC+W edUmQlNGvRlBYkm1QLyzlD4blUw3pdo= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Sender:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=tgMGRzESWkQ+jza5LIM+2YG5UUtrxuCLlNlof8Ub3HI=; b=O7F9hoVVXTS2psPy2k7JJ4s7IV IFRIFjXM/COmp3BhCSgJJIcqjslFLLiil0flagqfpYDSLagDfxTp1mMnXvkwm2dO9XAhtNcuGhvCW CjL28WFSFwTOaCPuYP9QVCU/w1XbZUJKIvL+kHSltzWxU2aDD7rT1907mwDx6mDoJEYlLeRrXmdMw 97GKTpo9aZaesc/sYpE0k17UAbn+xod3TYGf/H0f1sBRhOsRwB53FIEn93d9HMgD5LCGKg9m80Zid ollV6hUINPUnfmUSgmc0tnDaX9/1cj6QYZmrrNy8gBFixAvJArEZTKUDSgTEY8sHHb0hjsdUFGm1Z lHr8V6IA==; Received: from mcgrof by bombadil.infradead.org with local (Exim 4.96 #2 (Red Hat Linux)) id 1qO1yS-005MyN-1n; Mon, 24 Jul 2023 20:16:08 +0000 Date: Mon, 24 Jul 2023 13:16:08 -0700 From: Luis Chamberlain To: Christoph Hellwig Cc: Jens Axboe , "Darrick J. Wong" , Andrew Morton , Matthew Wilcox , Christian Brauner , linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-xfs@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 6/6] fs: add CONFIG_BUFFER_HEAD Message-ID: References: <20230720140452.63817-1-hch@lst.de> <20230720140452.63817-7-hch@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230720140452.63817-7-hch@lst.de> X-Rspamd-Queue-Id: E179912000F X-Rspam-User: X-Stat-Signature: qq6ouw1qzu4qb7o4pohkgsuxim5wmxci X-Rspamd-Server: rspam01 X-HE-Tag: 1690229772-213581 X-HE-Meta: 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 qyoXIDew viLsSnlSOmy0qpgZv+UAnoDxnIjWAS6KTRzwzCP60asB+syV3po6sxCdpcYvtHlpL7KSKbjWpS7bszOyAbQtFnExVUyYj6sLB9MjzsBqvdQxsMkh4Nt9DNMstlz+e7em+xwFO46QlxGAcwN3WfmQXl0w/ai/Awg5079zUgJK5Flu4FQnGntqb6IfggmJspfblZhnxT6g8+Afro9uffAQvEAFmDOt8nfiFwgXtlVV5X+HOUuDW+N+2fZiwec4fLJTmgpX+bVFEZYs90cXajE+8zYeQWJeLMHMgQ+hjv8hF18NBb1FRwJ+Re5v6ddVgOGH3Jj2UYU75jU0w3s1cU12a42Iz0uTqDLopewISmUqAbKm69DOYwJjyf8luGRntkryZNLTKPD8EYSILzcsyak8d4L4PayS8stf3iBZF X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu, Jul 20, 2023 at 04:04:52PM +0200, Christoph Hellwig wrote: > Add a new config option that controls building the buffer_head code, and > select it from all file systems and stacking drivers that need it. > > For the block device nodes and alternative iomap based buffered I/O path > is provided when buffer_head support is not enabled, and iomap needs a > little tweak to be able to compile out the buffer_head based code path. > > Otherwise this is just Kconfig and ifdef changes. > > Signed-off-by: Christoph Hellwig Reviewed-by: Luis Chamberlain Luis