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[81.17.249.35]) by mx.google.com with ESMTPS id y6si2193096edi.116.2019.01.04.04.50.32 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 04 Jan 2019 04:50:32 -0800 (PST) Received-SPF: pass (google.com: domain of mgorman@techsingularity.net designates 81.17.249.35 as permitted sender) client-ip=81.17.249.35; Authentication-Results: mx.google.com; spf=pass (google.com: domain of mgorman@techsingularity.net designates 81.17.249.35 as permitted sender) smtp.mailfrom=mgorman@techsingularity.net Received: from mail.blacknight.com (pemlinmail03.blacknight.ie [81.17.254.16]) by outbound-smtp04.blacknight.com (Postfix) with ESMTPS id 6B74898837 for ; Fri, 4 Jan 2019 12:50:32 +0000 (UTC) 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> 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: X-Virus-Scanned: ClamAV using ClamSMTP 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 */