Message ID | 20190829070019.12714-9-david@redhat.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
Return-Path: <SRS0=qe68=WZ=kvack.org=owner-linux-mm@kernel.org> Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CDCA914D5 for <patchwork-linux-mm@patchwork.kernel.org>; Thu, 29 Aug 2019 07:01:03 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id A528A233A1 for <patchwork-linux-mm@patchwork.kernel.org>; Thu, 29 Aug 2019 07:01:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A528A233A1 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id A40216B0272; Thu, 29 Aug 2019 03:01:00 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 9CA206B0273; Thu, 29 Aug 2019 03:01:00 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 7F54A6B0274; Thu, 29 Aug 2019 03:01:00 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0073.hostedemail.com [216.40.44.73]) by kanga.kvack.org (Postfix) with ESMTP id 58B6D6B0272 for <linux-mm@kvack.org>; Thu, 29 Aug 2019 03:01:00 -0400 (EDT) Received: from smtpin01.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with SMTP id EC024181AC9AE for <linux-mm@kvack.org>; Thu, 29 Aug 2019 07:00:59 +0000 (UTC) X-FDA: 75874568238.01.basin31_8ae1afed2119 X-Spam-Summary: 1,0,0,,d41d8cd98f00b204,david@redhat.com,:linux-kernel@vger.kernel.org::david@redhat.com:akpm@linux-foundation.org:mhocko@suse.com:vbabka@suse.cz:osalvador@suse.de:pavel.tatashin@microsoft.com:mgorman@techsingularity.net:rppt@linux.ibm.com:dan.j.williams@intel.com:alexander.h.duyck@linux.intel.com,RULES_HIT:30054:30064,0,RBL:209.132.183.28:@redhat.com:.lbl8.mailshell.net-62.18.0.0 64.10.201.10,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:ft,MSBL:0,DNSBL:none,Custom_rules:0:0:0,LFtime:25,LUA_SUMMARY:none X-HE-Tag: basin31_8ae1afed2119 X-Filterd-Recvd-Size: 2960 Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by imf41.hostedemail.com (Postfix) with ESMTP for <linux-mm@kvack.org>; Thu, 29 Aug 2019 07:00:59 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id AC9F859455; Thu, 29 Aug 2019 07:00:58 +0000 (UTC) Received: from t460s.redhat.com (ovpn-117-166.ams2.redhat.com [10.36.117.166]) by smtp.corp.redhat.com (Postfix) with ESMTP id 5A59C1001B05; Thu, 29 Aug 2019 07:00:56 +0000 (UTC) From: David Hildenbrand <david@redhat.com> To: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, David Hildenbrand <david@redhat.com>, Andrew Morton <akpm@linux-foundation.org>, Michal Hocko <mhocko@suse.com>, Vlastimil Babka <vbabka@suse.cz>, Oscar Salvador <osalvador@suse.de>, Pavel Tatashin <pavel.tatashin@microsoft.com>, Mel Gorman <mgorman@techsingularity.net>, Mike Rapoport <rppt@linux.ibm.com>, Dan Williams <dan.j.williams@intel.com>, Alexander Duyck <alexander.h.duyck@linux.intel.com> Subject: [PATCH v3 08/11] mm: Exit early in set_zone_contiguous() if already contiguous Date: Thu, 29 Aug 2019 09:00:16 +0200 Message-Id: <20190829070019.12714-9-david@redhat.com> In-Reply-To: <20190829070019.12714-1-david@redhat.com> References: <20190829070019.12714-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Thu, 29 Aug 2019 07:00:58 +0000 (UTC) Content-Transfer-Encoding: quoted-printable 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: <linux-mm.kvack.org> |
Series |
mm/memory_hotplug: Shrink zones before removing memory
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expand
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diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 44038665fe8e..a9935dc19f5b 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1546,6 +1546,9 @@ void set_zone_contiguous(struct zone *zone) unsigned long block_start_pfn = zone->zone_start_pfn; unsigned long block_end_pfn; + if (zone->contiguous) + return; + block_end_pfn = ALIGN(block_start_pfn + 1, pageblock_nr_pages); for (; block_start_pfn < zone_end_pfn(zone); block_start_pfn = block_end_pfn,
No need to recompute in case the zone is already marked contiguous. We will soon exploit this on the memory removal path, where we will only clear zone->contiguous on zones that intersect with the memory to be removed. Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Oscar Salvador <osalvador@suse.de> Cc: Pavel Tatashin <pavel.tatashin@microsoft.com> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Mike Rapoport <rppt@linux.ibm.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Alexander Duyck <alexander.h.duyck@linux.intel.com> Signed-off-by: David Hildenbrand <david@redhat.com> --- mm/page_alloc.c | 3 +++ 1 file changed, 3 insertions(+)