Re: [PATCH 04/10] mm: slub: add knowledge of reserve pages

[Andrew Morton]

On Wed, 8 Aug 2007 10:57:13 -0700 (PDT)
Christoph Lameter <clameter@xxxxxxx> wrote:

> I think in general irq context reclaim is doable. Cannot see obvious 
> issues on a first superficial pass through rmap.c. The irq holdoff would 
> be pretty long though which may make it unacceptable.

The IRQ holdoff could be tremendous.  But if it is sufficiently infrequent
and if the worst effect is merely a network rx ring overflow then the tradeoff
might be a good one.
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