From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753900AbcBHNic (ORCPT ); Mon, 8 Feb 2016 08:38:32 -0500 Received: from mx2.suse.de ([195.135.220.15]:36706 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753532AbcBHNia (ORCPT ); Mon, 8 Feb 2016 08:38:30 -0500 From: Vlastimil Babka To: linux-mm@kvack.org, Andrew Morton Cc: linux-kernel@vger.kernel.org, Andrea Arcangeli , "Kirill A. Shutemov" , Rik van Riel , Joonsoo Kim , Mel Gorman , David Rientjes , Michal Hocko , Johannes Weiner , Vlastimil Babka Subject: [PATCH v2 3/5] mm, memory hotplug: small cleanup in online_pages() Date: Mon, 8 Feb 2016 14:38:09 +0100 Message-Id: <1454938691-2197-4-git-send-email-vbabka@suse.cz> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1454938691-2197-1-git-send-email-vbabka@suse.cz> References: <1454938691-2197-1-git-send-email-vbabka@suse.cz> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We can reuse the nid we've determined instead of repeated pfn_to_nid() usages. Also zone_to_nid() should be a bit cheaper in general than pfn_to_nid(). Signed-off-by: Vlastimil Babka --- mm/memory_hotplug.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 7aa7697fedd1..66064008a489 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1082,7 +1082,7 @@ int __ref online_pages(unsigned long pfn, unsigned long nr_pages, int online_typ arg.nr_pages = nr_pages; node_states_check_changes_online(nr_pages, zone, &arg); - nid = pfn_to_nid(pfn); + nid = zone_to_nid(zone); ret = memory_notify(MEM_GOING_ONLINE, &arg); ret = notifier_to_errno(ret); @@ -1122,7 +1122,7 @@ int __ref online_pages(unsigned long pfn, unsigned long nr_pages, int online_typ pgdat_resize_unlock(zone->zone_pgdat, &flags); if (onlined_pages) { - node_states_set_node(zone_to_nid(zone), &arg); + node_states_set_node(nid, &arg); if (need_zonelists_rebuild) build_all_zonelists(NULL, NULL); else @@ -1134,7 +1134,7 @@ int __ref online_pages(unsigned long pfn, unsigned long nr_pages, int online_typ init_per_zone_wmark_min(); if (onlined_pages) { - kswapd_run(zone_to_nid(zone)); + kswapd_run(nid); kcompactd_run(nid); } -- 2.7.0