From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from eggs.gnu.org ([208.118.235.92]:44168)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <pbonzini@redhat.com>) id 1SAipp-0005J5-E2
	for qemu-devel@nongnu.org; Thu, 22 Mar 2012 10:17:53 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <pbonzini@redhat.com>) id 1SAipj-0004pT-9a
	for qemu-devel@nongnu.org; Thu, 22 Mar 2012 10:17:48 -0400
Received: from mx1.redhat.com ([209.132.183.28]:31088)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <pbonzini@redhat.com>) id 1SAipj-0004pK-1R
	for qemu-devel@nongnu.org; Thu, 22 Mar 2012 10:17:43 -0400
Message-ID: <4F6B3480.7010304@redhat.com>
Date: Thu, 22 Mar 2012 15:17:36 +0100
From: Paolo Bonzini <pbonzini@redhat.com>
MIME-Version: 1.0
References: <1332345124-381-1-git-send-email-benoit.canet@gmail.com>
	<1332345124-381-5-git-send-email-benoit.canet@gmail.com>
	<CAJSP0QWWmKBjTYeL3x2YH6T5-gswjE-4C6709b4b_BM6brwt0g@mail.gmail.com>
	<CAOh3yay__9FmsxjvX8h-mHTPMbMkK459W31eyzU_08Qn=PUz3Q@mail.gmail.com>
In-Reply-To: <CAOh3yay__9FmsxjvX8h-mHTPMbMkK459W31eyzU_08Qn=PUz3Q@mail.gmail.com>
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
Subject: Re: [Qemu-devel] [PATCH V2 4/7] qed: add bdrv_invalidate_cache to
 be called after incoming live migration
List-Id: <qemu-devel.nongnu.org>
List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.nongnu.org/archive/html/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: =?UTF-8?B?QmVub8OudCBDYW5ldA==?= <benoit.canet@gmail.com>
Cc: kwolf@redhat.com, Stefan Hajnoczi <stefanha@gmail.com>, Anthony Liguori <aliguori@us.ibm.com>, qemu-devel@nongnu.org, stefanha@linux.vnet.ibm.com

Il 22/03/2012 15:15, Beno=C3=AEt Canet ha scritto:
>=20
> I added this flag after seeing the following code in in bdrv_open_commo=
n.
>=20
>     /*
>      * Clear flags that are internal to the block layer before opening =
the
>      * image.
>      */
>     open_flags =3D flags & ~(BDRV_O_SNAPSHOT | BDRV_O_NO_BACKING);
>=20
> This lead me to believe that  bs->open_flags !=3D open_flags.

Correct, see the first two patches in the series at
http://lists.gnu.org/archive/html/qemu-devel/2012-01/msg03467.html

Paolo