linux-kernel - Re: [RFC][PATCH] Cross Memory Attach

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Message-ID: <1284654451.2275.579.camel@laptop>
Date:	Thu, 16 Sep 2010 18:27:31 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Christopher Yeoh <cyeoh@....ibm.com>, linux-kernel@...r.kernel.org
Subject: Re: [RFC][PATCH] Cross Memory Attach

On Wed, 2010-09-15 at 08:11 -0700, Linus Torvalds wrote:

>    if (copy_to)
>       ret = copy_from_user(..);
>    else
>       ret = copy_to_user(..);
>    kunmap(process_pages[i]);
>    if (ret)
>       goto out; 

Shouldn't we be using kmap_atomic()
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