From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail190.messagelabs.com (mail190.messagelabs.com [216.82.249.51]) by kanga.kvack.org (Postfix) with ESMTP id 368FB8D003A for ; Fri, 11 Mar 2011 11:33:27 -0500 (EST) Date: Fri, 11 Mar 2011 17:33:13 +0100 From: Jan Dvorak Message-Id: <20110311173313.f427fb3b.mordae@anilinux.org> In-Reply-To: References: <056c7b49e7540a910b8a4f664415e638@anilinux.org> <474da85b78a7bd1e16726b72e9162f5c@anilinux.org> Mime-Version: 1.0 Content-Type: multipart/signed; protocol="application/pgp-signature"; micalg="PGP-SHA1"; boundary="Signature=_Fri__11_Mar_2011_17_33_13_+0100_qc5V0z3tN=htyOo3" Subject: Re: COW userspace memory mapping question Sender: owner-linux-mm@kvack.org List-ID: To: Christoph Lameter Cc: linux-mm@kvack.org --Signature=_Fri__11_Mar_2011_17_33_13_+0100_qc5V0z3tN=htyOo3 Content-Type: text/plain; charset=US-ASCII Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, 11 Mar 2011 09:15:42 -0600 (CST), Christoph Lameter = wrote: > Keep the RW mapping around and tear down and repeat the MAP_PRIVATE mmaps > areas as needed? Updates would have to be done to the RW mapping. Hmm, I can create a shared mapping and snapshot normally using the private mapping. Only thing I need to do in order to ensure I will still see the original state in the private map is to write something to it before every update of the shared map. Is that correct? --Signature=_Fri__11_Mar_2011_17_33_13_+0100_qc5V0z3tN=htyOo3 Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.16 (GNU/Linux) iEYEARECAAYFAk16TswACgkQBMrh4NcVzh/nIACgvwEAYzcwwEbTKTz3DYao8t57 qNsAn2yr5R0tCNCsq2C8k3vMijKXC9om =EtX1 -----END PGP SIGNATURE----- --Signature=_Fri__11_Mar_2011_17_33_13_+0100_qc5V0z3tN=htyOo3-- -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org