linux-kernel - Re: running get_user_pages() from kernel thread

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Message-ID: <Pine.LNX.4.64.0906162152250.12770@sister.anvils>
Date:	Tue, 16 Jun 2009 21:57:30 +0100 (BST)
From:	Hugh Dickins <hugh.dickins@...cali.co.uk>
To:	Johannes Weiner <hannes@...xchg.org>
cc:	Andrea Arcangeli <aarcange@...hat.com>,
	Izik Eidus <ieidus@...hat.com>, linux-kernel@...r.kernel.org,
	Rik van Riel <riel@...hat.com>, nickpiggin@...oo.com.au
Subject: Re: running get_user_pages() from kernel thread

On Tue, 16 Jun 2009, Johannes Weiner wrote:
> 
> Did you have a particular reason not to pass in the faulting mm
> instead?

No good reason.

> 
> As the swap token should only care about the faulting address space
> leading to swap io and not about the running process anyway, we could
> do it like below and remove all those pesky current->derefs in the
> same go.  What do you think?

I think we'll have to claim joint authorship.
But I win by one checkpatch point, and a few minutes ;)

Hugh
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