Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932373AbaAWVCi (ORCPT ); Thu, 23 Jan 2014 16:02:38 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:36181 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755442AbaAWVCg (ORCPT ); Thu, 23 Jan 2014 16:02:36 -0500 Date: Thu, 23 Jan 2014 13:02:35 -0800 From: Andrew Morton To: Cyrill Gorcunov Cc: Pavel Emelyanov , Mel Gorman , gnome@rvzt.net, grawoc@darkrefraction.com, alan@lxorguk.ukuu.org.uk, linux-mm@kvack.org, linux-kernel@vger.kernel.org, bugzilla-daemon@bugzilla.kernel.org Subject: Re: [PATCH] mm: Ignore VM_SOFTDIRTY on VMA merging, v2 Message-Id: <20140123130235.61e2eca44d92b37936955ff1@linux-foundation.org> In-Reply-To: <20140123151445.GX1574@moon> References: <20140122190816.GB4963@suse.de> <20140122191928.GQ1574@moon> <20140122223325.GA30637@moon> <20140123095541.GD4963@suse.de> <20140123103606.GU1574@moon> <20140123121555.GV1574@moon> <20140123125543.GW1574@moon> <20140123151445.GX1574@moon> X-Mailer: Sylpheed 3.2.0beta5 (GTK+ 2.24.10; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 23 Jan 2014 19:14:45 +0400 Cyrill Gorcunov wrote: > VM_SOFTDIRTY bit affects vma merge routine: if two VMAs has all > bits in vm_flags matched except dirty bit the kernel can't longer > merge them and this forces the kernel to generate new VMAs instead. Do you intend to alter the brk() and binprm code to set VM_SOFTDIRTY? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/