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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, 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 C3EBCC43444 for ; Fri, 4 Jan 2019 12:50:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 90B57208E3 for ; Fri, 4 Jan 2019 12:50:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727912AbfADMue (ORCPT ); Fri, 4 Jan 2019 07:50:34 -0500 Received: from outbound-smtp26.blacknight.com ([81.17.249.194]:55561 "EHLO outbound-smtp26.blacknight.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726282AbfADMue (ORCPT ); Fri, 4 Jan 2019 07:50:34 -0500 Received: from mail.blacknight.com (pemlinmail03.blacknight.ie [81.17.254.16]) by outbound-smtp26.blacknight.com (Postfix) with ESMTPS id 70057B8794 for ; Fri, 4 Jan 2019 12:50:32 +0000 (GMT) Received: (qmail 29438 invoked from network); 4 Jan 2019 12:50:32 -0000 Received: from unknown (HELO stampy.163woodhaven.lan) (mgorman@techsingularity.net@[37.228.229.96]) by 81.17.254.9 with ESMTPA; 4 Jan 2019 12:50:32 -0000 From: Mel Gorman To: Linux-MM Cc: David Rientjes , Andrea Arcangeli , Vlastimil Babka , ying.huang@intel.com, kirill@shutemov.name, Andrew Morton , Linux List Kernel Mailing , Mel Gorman Subject: [PATCH 01/25] mm, compaction: Shrink compact_control Date: Fri, 4 Jan 2019 12:49:47 +0000 Message-Id: <20190104125011.16071-2-mgorman@techsingularity.net> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20190104125011.16071-1-mgorman@techsingularity.net> References: <20190104125011.16071-1-mgorman@techsingularity.net> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The isolate and migrate scanners should never isolate more than a pageblock of pages so unsigned int is sufficient saving 8 bytes on a 64-bit build. Signed-off-by: Mel Gorman Acked-by: Vlastimil Babka --- mm/internal.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/internal.h b/mm/internal.h index f4a7bb02decf..5ddf5d3771a0 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -184,8 +184,8 @@ struct compact_control { struct list_head freepages; /* List of free pages to migrate to */ struct list_head migratepages; /* List of pages being migrated */ struct zone *zone; - unsigned long nr_freepages; /* Number of isolated free pages */ - unsigned long nr_migratepages; /* Number of pages to migrate */ + unsigned int nr_freepages; /* Number of isolated free pages */ + unsigned int nr_migratepages; /* Number of pages to migrate */ unsigned long total_migrate_scanned; unsigned long total_free_scanned; unsigned long free_pfn; /* isolate_freepages search base */ -- 2.16.4