linux-kernel - Re: question about pt locking

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Message-Id: <1237539130.24626.43.camel@twins>
Date:	Fri, 20 Mar 2009 09:52:10 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Shentino <shentino@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: question about pt locking

On Fri, 2009-03-20 at 01:16 -0700, Shentino wrote:
> Just curious, but does a process effectively have a read-lock on its 
> page tables when it's in userland?

No, page reclaim can fiddle with a running process' page tables
concurrently.
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