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 X-Spam-Level: X-Spam-Status: No, score=-8.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D393BC5B578 for ; Mon, 1 Jul 2019 06:20:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9B33920B7C for ; Mon, 1 Jul 2019 06:20:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="GnFpJ4/O" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727165AbfGAGUa (ORCPT ); Mon, 1 Jul 2019 02:20:30 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:48128 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726869AbfGAGUa (ORCPT ); Mon, 1 Jul 2019 02:20:30 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding: Content-Type:MIME-Version:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=6xqIf0xVqrmwyuBYUV8qbkcY4fEJxDo5YYvPGQNv0Dg=; b=GnFpJ4/Oc/100n/wlMN0yyuTT qBVa3bbru2+kI55sKA82ZcwWbugtiuZLwkxnhpe5470h26XmfvTn4dShhCGDC99YkHXONgWcU6z0S 5t/erBmlFFzhqv1WZ+ZnfPaiEb7cET33XrkX7TjbDP0GDKX4lTAs35mFDMwJwFFJXsTbjCCnz9Qsb T3LnzxrWgwM+9wArnuvCnRPC5yeDP07v4E+ncJnB+zriXMvtCe7R2MCuImkRo0lDXVWrImhTs8/Hp vF2SD1TvWGF7X/3d5CVihaeKKlUv9boEcAw2xU/YcQWyjar7krBJ5gs3T6qNDPoM5TghNpS8HWW4h KPFEdN94g==; Received: from [46.140.178.35] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.92 #3 (Red Hat Linux)) id 1hhpfq-0002sH-DB; Mon, 01 Jul 2019 06:20:22 +0000 From: Christoph Hellwig To: Dan Williams , =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Jason Gunthorpe , Ben Skeggs Cc: Ira Weiny , linux-mm@kvack.org, nouveau@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-nvdimm@lists.01.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org Subject: dev_pagemap related cleanups v4 Date: Mon, 1 Jul 2019 08:19:58 +0200 Message-Id: <20190701062020.19239-1-hch@lst.de> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Hi Dan, Jérôme and Jason, below is a series that cleans up the dev_pagemap interface so that it is more easily usable, which removes the need to wrap it in hmm and thus allowing to kill a lot of code Note: this series is on top of Linux 5.2-rc6 and has some minor conflicts with the hmm tree that are easy to resolve. Diffstat summary: 34 files changed, 379 insertions(+), 1016 deletions(-) Git tree: git://git.infradead.org/users/hch/misc.git hmm-devmem-cleanup.4 Gitweb: http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/hmm-devmem-cleanup.4 Changes since v3: - pull in "mm/swap: Fix release_pages() when releasing devmap pages" and rebase the other patches on top of that - fold the hmm_devmem_add_resource into the DEVICE_PUBLIC memory removal patch - remove _vm_normal_page as it isn't needed without DEVICE_PUBLIC memory - pick up various ACKs Changes since v2: - fix nvdimm kunit build - add a new memory type for device dax - fix a few issues in intermediate patches that didn't show up in the end result - incorporate feedback from Michal Hocko, including killing of the DEVICE_PUBLIC memory type entirely Changes since v1: - rebase - also switch p2pdma to the internal refcount - add type checking for pgmap->type - rename the migrate method to migrate_to_ram - cleanup the altmap_valid flag - various tidbits from the reviews