netdev - Re: [RFC PATCH V4 01/13] netback: page pool version 1

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Message-ID: <20120217191902.GD20584@phenom.dumpdata.com>
Date:	Fri, 17 Feb 2012 14:19:02 -0500
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Wei Liu <wei.liu2@...rix.com>, netdev@...r.kernel.org,
	xen-devel@...ts.xensource.com, ian.campbell@...rix.com
Subject: Re: [RFC PATCH V4 01/13] netback: page pool version 1

> 
> Hmm, this kind of stuff should be discussed on lkml.
> 
> I doubt we want yet another memory allocator, with a global lock
> (contended), and no NUMA properties.

That should be fixed. Are there any existing memory pools that could be used
instead? I (And I think everybody) is all for using the existing APIs if  they
can do the job. I was lookign a bit at the dmapool code, but that requires something
we don't have  - the 'struct device'. We could manufacture a fake one, but that just
stinks of hack.

It [pagepool] also should use the shrinker API I think.
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