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Date: Thu, 12 Mar 2015 17:48:00 -0000
From: Oleg Nesterov <oleg@redhat.com>
To: Andy Lutomirski <luto@amacapital.net>
Cc: Jan Kratochvil <jan.kratochvil@redhat.com>,        Sergio Durigan Junior <sergiodj@redhat.com>,        GDB Patches <gdb-patches@sourceware.org>,        Pedro Alves <palves@redhat.com>,        "linux-kernel@vger.kernel.org" <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> <CALCETrW5rmAHutzm_OwK2LTd_J0XByV3pvWGyW=AmC=v7rLfhQ@mail.gmail.com> <20150312165423.GA10073@redhat.com>
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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.