From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-f50.google.com (mail-wm0-f50.google.com [74.125.82.50]) by kanga.kvack.org (Postfix) with ESMTP id 8160A6B0005 for ; Wed, 20 Jan 2016 05:04:55 -0500 (EST) Received: by mail-wm0-f50.google.com with SMTP id l65so172141771wmf.1 for ; Wed, 20 Jan 2016 02:04:55 -0800 (PST) Received: from e06smtp08.uk.ibm.com (e06smtp08.uk.ibm.com. [195.75.94.104]) by mx.google.com with ESMTPS id b200si39590124wme.17.2016.01.20.02.04.54 for (version=TLS1 cipher=AES128-SHA bits=128/128); Wed, 20 Jan 2016 02:04:54 -0800 (PST) Received: from localhost by e06smtp08.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 20 Jan 2016 10:04:53 -0000 Received: from b06cxnps4076.portsmouth.uk.ibm.com (d06relay13.portsmouth.uk.ibm.com [9.149.109.198]) by d06dlp02.portsmouth.uk.ibm.com (Postfix) with ESMTP id 87C4C2190019 for ; Wed, 20 Jan 2016 10:04:39 +0000 (GMT) Received: from d06av03.portsmouth.uk.ibm.com (d06av03.portsmouth.uk.ibm.com [9.149.37.213]) by b06cxnps4076.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u0KA4pVT7799168 for ; Wed, 20 Jan 2016 10:04:51 GMT Received: from d06av03.portsmouth.uk.ibm.com (localhost [127.0.0.1]) by d06av03.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u0KA4ocr019077 for ; Wed, 20 Jan 2016 03:04:50 -0700 Date: Wed, 20 Jan 2016 11:04:48 +0100 From: Heiko Carstens Subject: Re: Mlocked pages statistics shows bogus value. Message-ID: <20160120100448.GF3395@osiris> References: <201601191936.HAI26031.HOtJQLOMFFFVOS@I-love.SAKURA.ne.jp> <20160119122101.GA20260@node.shutemov.name> <201601192146.IFE86479.VMHLOFtQSOFFJO@I-love.SAKURA.ne.jp> <20160119130137.GA20984@node.shutemov.name> <201601192238.CEH73964.MOtFFLJVOOSHQF@I-love.SAKURA.ne.jp> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <201601192238.CEH73964.MOtFFLJVOOSHQF@I-love.SAKURA.ne.jp> Sender: owner-linux-mm@kvack.org List-ID: To: Tetsuo Handa Cc: kirill@shutemov.name, walken@google.com, akpm@linux-foundation.org, linux-mm@kvack.org On Tue, Jan 19, 2016 at 10:38:50PM +0900, Tetsuo Handa wrote: > > > Don't we want to use "long" than "int" for all variables that count number > > > of pages, for recently commit 6cdb18ad98a49f7e9b95d538a0614cde827404b8 > > > "mm/vmstat: fix overflow in mod_zone_page_state()" changed to use "long" ? > > > > Potentially, yes. But here we count number of small pages in the compound > > page. We're far from being able to allocate 8 terabyte pages ;) > > That commit says "we have a 9TB system with only one node". > You might encounter such machines in near future. ;-) FWIW: in the above mentioned patch I wrote that I was just hoping that the int -> long conversion could fix the boot issue with the >8TB machine. It actually did fix it. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org