From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756212Ab0AMRce (ORCPT ); Wed, 13 Jan 2010 12:32:34 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756115Ab0AMRcd (ORCPT ); Wed, 13 Jan 2010 12:32:33 -0500 Received: from sous-sol.org ([216.99.217.87]:39396 "EHLO sequoia.sous-sol.org" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1756091Ab0AMRcc (ORCPT ); Wed, 13 Jan 2010 12:32:32 -0500 Date: Wed, 13 Jan 2010 09:31:52 -0800 From: Chris Wright To: Gleb Natapov Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-api@vger.kernel.org, akpm@linux-foundation.org Subject: Re: [PATCH v5] add MAP_UNLOCKED mmap flag Message-ID: <20100113173152.GA2666@sequoia.sous-sol.org> References: <20100113093119.GT7549@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100113093119.GT7549@redhat.com> User-Agent: Mutt/1.5.19 (2009-01-05) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Gleb Natapov (gleb@redhat.com) wrote: > If application does mlockall(MCL_FUTURE) it is no longer possible to mmap > file bigger than main memory or allocate big area of anonymous memory > in a thread safe manner. Sometimes it is desirable to lock everything > related to program execution into memory, but still be able to mmap > big file or allocate huge amount of memory and allow OS to swap them on > demand. MAP_UNLOCKED allows to do that. > > Signed-off-by: Gleb Natapov Looks good to me. Acked-by: Chris Wright thanks, -chris