linux-kernel - Re: [PATCH] mm: inactive-clean list

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Date:	Sun, 23 Jul 2006 01:50:43 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
CC:	linux-mm <linux-mm@...ck.org>, Linus Torvalds <torvalds@...l.org>,
	Andrew Morton <akpm@...l.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mm: inactive-clean list

Peter Zijlstra wrote:
> This patch implements the inactive_clean list spoken of during the VM summit.
> The LRU tail pages will be unmapped and ready to free, but not freeed.
> This gives reclaim an extra chance.

This patch makes it possible to implement Martin Schwidefsky's
hypervisor-based fast page reclaiming for architectures without
millicode - ie. Xen, UML and all other non-s390 architectures.

That could be a big help in heavily loaded virtualized environments.

The fact that it helps prevent the iSCSI memory deadlock is a
huge bonus too, of course :)

-- 
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