From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-yw0-f197.google.com (mail-yw0-f197.google.com [209.85.161.197]) by kanga.kvack.org (Postfix) with ESMTP id 542F06B02D6 for ; Thu, 19 Jan 2017 17:11:31 -0500 (EST) Received: by mail-yw0-f197.google.com with SMTP id v73so70414765ywg.2 for ; Thu, 19 Jan 2017 14:11:31 -0800 (PST) Received: from mx1.redhat.com (mx1.redhat.com. [209.132.183.28]) by mx.google.com with ESMTPS id h184si3526012qkf.91.2017.01.19.14.11.30 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 19 Jan 2017 14:11:30 -0800 (PST) Date: Thu, 19 Jan 2017 23:11:26 +0100 From: Andrea Arcangeli Subject: Re: [PATCH v2 1/1] mm/ksm: improve deduplication of zero pages with colouring Message-ID: <20170119221126.GP10177@redhat.com> References: <1484850953-23941-1-git-send-email-imbrenda@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1484850953-23941-1-git-send-email-imbrenda@linux.vnet.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: Claudio Imbrenda Cc: linux-mm@kvack.org, borntraeger@de.ibm.com, hughd@google.com, chrisw@sous-sol.org, akpm@linux-foundation.org, linux-kernel@vger.kernel.org Hello, On Thu, Jan 19, 2017 at 07:35:53PM +0100, Claudio Imbrenda wrote: > +/* Checksum of an empty (zeroed) page */ > +static unsigned int zero_checksum; > + > +/* Whether to merge empty (zeroed) pages with actual zero pages */ > +static bool ksm_use_zero_pages; Both could be defined as __read_mostly. -- 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