From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pd0-f172.google.com (mail-pd0-f172.google.com [209.85.192.172]) by kanga.kvack.org (Postfix) with ESMTP id CB8D26B0031 for ; Thu, 23 Jan 2014 16:02:38 -0500 (EST) Received: by mail-pd0-f172.google.com with SMTP id p10so2269763pdj.3 for ; Thu, 23 Jan 2014 13:02:38 -0800 (PST) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org. [140.211.169.12]) by mx.google.com with ESMTP id g5si15407990pav.201.2014.01.23.13.02.36 for ; Thu, 23 Jan 2014 13:02:37 -0800 (PST) Date: Thu, 23 Jan 2014 13:02:35 -0800 From: Andrew Morton 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> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: 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 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, 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