From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx202.postini.com [74.125.245.202]) by kanga.kvack.org (Postfix) with SMTP id 525A06B006C for ; Wed, 2 Jan 2013 21:14:44 -0500 (EST) Message-ID: <50E4E989.5090202@redhat.com> Date: Wed, 02 Jan 2013 21:14:33 -0500 From: Rik van Riel MIME-Version: 1.0 Subject: Re: [PATCH 3/9] mm: introduce mm_populate() for populating new vmas References: <1356050997-2688-1-git-send-email-walken@google.com> <1356050997-2688-4-git-send-email-walken@google.com> In-Reply-To: <1356050997-2688-4-git-send-email-walken@google.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Michel Lespinasse Cc: Andy Lutomirski , Ingo Molnar , Al Viro , Hugh Dickins , Jorn_Engel , Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org On 12/20/2012 07:49 PM, Michel Lespinasse wrote: > When creating new mappings using the MAP_POPULATE / MAP_LOCKED flags > (or with MCL_FUTURE in effect), we want to populate the pages within the > newly created vmas. This may take a while as we may have to read pages > from disk, so ideally we want to do this outside of the write-locked > mmap_sem region. > > This change introduces mm_populate(), which is used to defer populating > such mappings until after the mmap_sem write lock has been released. > This is implemented as a generalization of the former do_mlock_pages(), > which accomplished the same task but was using during mlock() / mlockall(). > > Reported-by: Andy Lutomirski > Signed-off-by: Michel Lespinasse Acked-by: Rik van Riel -- All rights reversed -- 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