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

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Message-ID: <4DE92675.6080908@freescale.com>
Date:	Fri, 3 Jun 2011 13:22:45 -0500
From:	Timur Tabi <timur@...escale.com>
To:	Alexey Dobriyan <adobriyan@...il.com>
CC:	<alan@...rguk.ukuu.org.uk>, <linux-kernel@...r.kernel.org>,
	<scottwood@...escale.com>, <akpm@...ux-foundation.org>
Subject: Re: [PATCH] lib: introduce strdup_from_user

Alexey Dobriyan wrote:
> NAK
> It accesses userspace data twice.

What's wrong with that?  How else is it supposed to know how much to allocate
without using strlen first?

Besides, it was Alan's idea to make this a common function.  I can easily put it
back in my driver.

-- 
Timur Tabi
Linux kernel developer at Freescale

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