From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754671AbbCLRst (ORCPT ); Thu, 12 Mar 2015 13:48:49 -0400 Received: from mx1.redhat.com ([209.132.183.28]:38496 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752813AbbCLRsq (ORCPT ); Thu, 12 Mar 2015 13:48:46 -0400 Date: Thu, 12 Mar 2015 18:46:53 +0100 From: Oleg Nesterov To: Andy Lutomirski Cc: Jan Kratochvil , Sergio Durigan Junior , GDB Patches , Pedro Alves , "linux-kernel@vger.kernel.org" Subject: Re: vvar, gup && coredump Message-ID: <20150312174653.GA13086@redhat.com> References: <878ufc9kau.fsf@redhat.com> <20150305154827.GA9441@host1.jankratochvil.net> <87zj7r5fpz.fsf@redhat.com> <20150305205744.GA13165@host1.jankratochvil.net> <20150311200052.GA22654@redhat.com> <20150312143438.GA4338@redhat.com> <20150312165423.GA10073@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150312165423.GA10073@redhat.com> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/12, Oleg Nesterov wrote: > > Yes, this is true. OK, lets not dump it. OTOH. We can probably add ->access() into special_mapping_vmops, this way __access_remote_vm() could work even if gup() fails ? Jan, Sergio. How much do we want do dump this area ? The change above should be justified. Oleg.