From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pl0-f72.google.com (mail-pl0-f72.google.com [209.85.160.72]) by kanga.kvack.org (Postfix) with ESMTP id ABC9E6B0003 for ; Mon, 21 May 2018 18:45:12 -0400 (EDT) Received: by mail-pl0-f72.google.com with SMTP id f10-v6so10800104pln.21 for ; Mon, 21 May 2018 15:45:12 -0700 (PDT) Received: from mga18.intel.com (mga18.intel.com. [134.134.136.126]) by mx.google.com with ESMTPS id b8-v6si14817158ple.469.2018.05.21.15.45.11 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 21 May 2018 15:45:11 -0700 (PDT) Subject: [PATCH 0/5] mm: rework hmm to use devm_memremap_pages From: Dan Williams Date: Mon, 21 May 2018 15:35:14 -0700 Message-ID: <152694211402.5484.2277538346144115181.stgit@dwillia2-desk3.amr.corp.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: akpm@linux-foundation.org Cc: stable@vger.kernel.org, Logan Gunthorpe , Christoph Hellwig , =?utf-8?b?SsOpcsO0bWU=?= Glisse , Michal Hocko , linux-mm@kvack.org, linux-kernel@vger.kernel.org Hi Andrew, please consider this series for 4.18. For maintainability, as ZONE_DEVICE continues to attract new users, it is useful to keep all users consolidated on devm_memremap_pages() as the interface for create "device pages". The devm_memremap_pages() implementation was recently reworked to make it more generic for arbitrary users, like the proposed peer-to-peer PCI-E enabling. HMM pre-dated this rework and opted to duplicate devm_memremap_pages() as hmm_devmem_pages_create(). Rework HMM to be a consumer of devm_memremap_pages() directly and fix up the licensing on the exports given the deep dependencies on the mm. Patches based on v4.17-rc6 where there are no upstream consumers of the HMM functionality. --- Dan Williams (5): mm, devm_memremap_pages: mark devm_memremap_pages() EXPORT_SYMBOL_GPL mm, devm_memremap_pages: handle errors allocating final devres action mm, hmm: use devm semantics for hmm_devmem_{add,remove} mm, hmm: replace hmm_devmem_pages_create() with devm_memremap_pages() mm, hmm: mark hmm_devmem_{add,add_resource} EXPORT_SYMBOL_GPL Documentation/vm/hmm.txt | 1 include/linux/hmm.h | 4 - include/linux/memremap.h | 1 kernel/memremap.c | 39 +++++- mm/hmm.c | 297 +++++++--------------------------------------- 5 files changed, 77 insertions(+), 265 deletions(-)