From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wi0-f174.google.com (mail-wi0-f174.google.com [209.85.212.174]) by kanga.kvack.org (Postfix) with ESMTP id A3B4C6B0038 for ; Thu, 20 Aug 2015 03:56:14 -0400 (EDT) Received: by wijp15 with SMTP id p15so8326136wij.0 for ; Thu, 20 Aug 2015 00:56:14 -0700 (PDT) Received: from mail-wi0-f170.google.com (mail-wi0-f170.google.com. [209.85.212.170]) by mx.google.com with ESMTPS id mb10si7630164wic.100.2015.08.20.00.56.12 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 20 Aug 2015 00:56:13 -0700 (PDT) Received: by wibhh20 with SMTP id hh20so28690049wib.0 for ; Thu, 20 Aug 2015 00:56:12 -0700 (PDT) Date: Thu, 20 Aug 2015 09:56:11 +0200 From: Michal Hocko Subject: Re: [PATCH v7 3/6] mm: Introduce VM_LOCKONFAULT Message-ID: <20150820075611.GD4780@dhcp22.suse.cz> References: <1439097776-27695-1-git-send-email-emunson@akamai.com> <1439097776-27695-4-git-send-email-emunson@akamai.com> <20150812115909.GA5182@dhcp22.suse.cz> <20150819213345.GB4536@akamai.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150819213345.GB4536@akamai.com> Sender: owner-linux-mm@kvack.org List-ID: To: Eric B Munson Cc: Andrew Morton , Vlastimil Babka , Jonathan Corbet , "Kirill A. Shutemov" , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-mm@kvack.org, linux-api@vger.kernel.org On Wed 19-08-15 17:33:45, Eric B Munson wrote: [...] > The group which asked for this feature here > wants the ability to distinguish between LOCKED and LOCKONFAULT regions > and without the VMA flag there isn't a way to do that. Could you be more specific on why this is needed? > Do we know that these last two open flags are needed right now or is > this speculation that they will be and that none of the other VMA flags > can be reclaimed? I do not think they are needed by anybody right now but that is not a reason why it should be used without a really strong justification. If the discoverability is really needed then fair enough but I haven't seen any justification for that yet. -- Michal Hocko SUSE Labs -- 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