linux-kernel - Re: [PATCH 0/3] Unmapped page cache control (v5)

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Date:	Sun, 3 Apr 2011 13:41:20 -0500 (CDT)
From:	Christoph Lameter <cl@...ux.com>
To:	Dave Chinner <david@...morbit.com>
cc:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>, linux-mm@...ck.org,
	akpm@...ux-foundation.org, npiggin@...nel.dk, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org, kamezawa.hiroyu@...fujitsu.com,
	Mel Gorman <mel@....ul.ie>, Minchan Kim <minchan.kim@...il.com>
Subject: Re: [PATCH 0/3] Unmapped page cache control (v5)

On Sat, 2 Apr 2011, Dave Chinner wrote:

> Fundamentally, if you just switch off memory reclaim to avoid the
> latencies involved with direct memory reclaim, then all you'll get
> instead is ENOMEM because there's no memory available and none will be
> reclaimed. That's even more fatal for the system than doing reclaim.

Not for my use cases here. No one will die if reclaim happens but its bad
for the bottom line. Reducing the chance of memory reclaim occurring in a
critical section is sufficient.
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