linux-kernel - Re: nommu: handling anonymous mmap clearing in userspace rather than kernel

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Message-ID: <21218.1207228451@redhat.com>
Date:	Thu, 03 Apr 2008 14:14:11 +0100
From:	David Howells <dhowells@...hat.com>
To:	Bernd Schmidt <bernds_cb1@...nline.de>
Cc:	dhowells@...hat.com, Mike Frysinger <vapier.adi@...il.com>,
	Greg Ungerer <gerg@...pgear.com>,
	David McCullough <David_Mccullough@...urecomputing.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Bryan Wu <Bryan.Wu@...log.com>,
	Robin Getz <rgetz@...ckfin.uclinux.org>
Subject: Re: nommu: handling anonymous mmap clearing in userspace rather than kernel

Bernd Schmidt <bernds_cb1@...nline.de> wrote:

> Really, if MAP_UNINITIALIZE is unacceptable, then that's too bad and we'll
> carry it as a local patch, but all the other proposed mechanisms are
> non-solutions because they break an established interface.

Agreed.  The kernel would not be backwardly compatible with old userspaces.

David
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