linux-kernel - Re: [PATCH] lib: introduce strdup_from

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Message-ID: <20110603225858.53e796ca@lxorguk.ukuu.org.uk>
Date:	Fri, 3 Jun 2011 22:58:58 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Alexey Dobriyan <adobriyan@...il.com>
Cc:	Timur Tabi <timur@...escale.com>, linux-kernel@...r.kernel.org,
	scottwood@...escale.com, akpm@...ux-foundation.org
Subject: Re: [PATCH] lib: introduce strdup_from_user

On Fri, 3 Jun 2011 20:45:10 +0300
Alexey Dobriyan <adobriyan@...il.com> wrote:

> NAK
> It accesses userspace data twice.

Big deal, processors have caches.

Just needs the zero termination to be reliable.

Alan
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