linux-kernel - Re: mlock: mlocked pages are unevictable

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Message-Id: <1224622086.6724.8.camel@twins>
Date:	Tue, 21 Oct 2008 22:48:06 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc:	Heiko Carstens <heiko.carstens@...ibm.com>,
	Nick Piggin <npiggin@...e.de>, linux-kernel@...r.kernel.org,
	Hugh Dickins <hugh@...itas.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Rik van Riel <riel@...hat.com>,
	Lee Schermerhorn <lee.schermerhorn@...com>, linux-mm@...ck.org,
	Oleg Nesterov <oleg@...sign.ru>
Subject: Re: mlock: mlocked pages are unevictable

On Tue, 2008-10-21 at 22:30 +0200, Peter Zijlstra wrote:

> The problem appears to be calling flush_work(), which is rather heavy
> handed. We could do schedule_on_each_cpu() using a completion.
> 
> Which I think is a nicer solution (if sufficient of course).

Ah, never mind, the flush_work() is already doing the right thing using
barriers and completions.


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