From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr1-f71.google.com (mail-wr1-f71.google.com [209.85.221.71]) by kanga.kvack.org (Postfix) with ESMTP id 07F996B0007 for ; Wed, 15 Aug 2018 10:42:31 -0400 (EDT) Received: by mail-wr1-f71.google.com with SMTP id p12-v6so1018855wro.7 for ; Wed, 15 Aug 2018 07:42:30 -0700 (PDT) Received: from mail-sor-f65.google.com (mail-sor-f65.google.com. [209.85.220.65]) by mx.google.com with SMTPS id u12-v6sor8237529wro.63.2018.08.15.07.42.29 for (Google Transport Security); Wed, 15 Aug 2018 07:42:29 -0700 (PDT) From: Oscar Salvador Subject: [PATCH v3 0/4] Refactoring for remove_memory_section/unregister_mem_sect_under_nodes Date: Wed, 15 Aug 2018 16:42:15 +0200 Message-Id: <20180815144219.6014-1-osalvador@techadventures.net> Sender: owner-linux-mm@kvack.org List-ID: To: akpm@linux-foundation.org Cc: mhocko@suse.com, vbabka@suse.cz, dan.j.williams@intel.com, yasu.isimatu@gmail.com, jonathan.cameron@huawei.com, david@redhat.com, Pavel.Tatashin@microsoft.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Oscar Salvador From: Oscar Salvador v2 -> v3: - NODEMASK_FREE can deal with NULL pointers, so do not make it conditional (by David). - Split up node_online's check patch (David's suggestion) - Added Reviewed-by from Andrew and David - Fix checkpath.pl warnings This patchset does some cleanups and refactoring in the memory-hotplug code. The first and the second patch are pretty straightforward, as they only remove unused arguments/checks. The third one refactors unregister_mem_sect_under_nodes. This is needed to have a proper fallback in case we could not allocate memory. (details can be seen in patch3). The fourth patch removes a node_online check. We are getting the nid from pages that are yet not removed, but a node can only be offline when its memory/cpu's have been removed. Therefore, we do not really need to check for the node to be online here. Since this change has a patch for itself, we could quickly revert it if we notice that something is wrong with it, or drop it if people are concerned about it. Oscar Salvador (4): mm/memory-hotplug: Drop unused args from remove_memory_section mm/memory_hotplug: Drop mem_blk check from unregister_mem_sect_under_nodes mm/memory_hotplug: Refactor unregister_mem_sect_under_nodes mm/memory_hotplug: Drop node_online check in unregister_mem_sect_under_nodes drivers/base/memory.c | 5 ++--- drivers/base/node.c | 29 +++++++++++++++-------------- include/linux/node.h | 5 ++--- 3 files changed, 19 insertions(+), 20 deletions(-) -- 2.13.6