From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx150.postini.com [74.125.245.150]) by kanga.kvack.org (Postfix) with SMTP id 0931D6B0032 for ; Tue, 2 Jul 2013 00:43:16 -0400 (EDT) Message-ID: <51D25A71.3060007@sr71.net> Date: Mon, 01 Jul 2013 21:43:29 -0700 From: Dave Hansen MIME-Version: 1.0 Subject: Re: [RFC][PATCH] mm: madvise: MADV_POPULATE for quick pre-faulting References: <20130627231605.8F9F12E6@viggo.jf.intel.com> <20130628054757.GA10429@gmail.com> <51CDB056.5090308@sr71.net> <51CE4451.4060708@gmail.com> <51D1AB6E.9030905@sr71.net> <20130702023748.GA10366@gmail.com> In-Reply-To: <20130702023748.GA10366@gmail.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org, linux-kernel@vger.kernel.org On 07/01/2013 07:37 PM, Zheng Liu wrote: > FWIW, it would be great if we can let MAP_POPULATE flag support shared > mappings because in our product system there has a lot of applications > that uses mmap(2) and then pre-faults this mapping. Currently these > applications need to pre-fault the mapping manually. Are you sure it doesn't? From a cursory look at the code, it looked to me like it would populate anonymous and file-backed, but I didn't double-check experimentally. -- 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