linux-kernel - Re: [14/14] vcompound: Avoid vmalloc for ehash

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Date:	Fri, 21 Mar 2008 08:42:08 +0100
From:	Eric Dumazet <dada1@...mosbay.com>
To:	David Miller <davem@...emloft.net>
CC:	clameter@....com, linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [14/14] vcompound: Avoid vmalloc for ehash_locks

David Miller a écrit :
> From: Christoph Lameter <clameter@....com>
> Date: Fri, 21 Mar 2008 00:03:51 -0700 (PDT)
> 
>> On Fri, 21 Mar 2008, Eric Dumazet wrote:
>>
>>> But, isnt it defeating the purpose of this *particular* vmalloc() use ?
>> I thought that was controlled by hashdist? I did not see it used here and 
>> so I assumed that the RR was not intended here.
> 
> It's intended for all of the major networking hash tables.

Other networking hash tables uses alloc_large_system_hash(), which handles 
hashdist settings.

But this helper is __init only, so we can not use it for ehash_locks (can be 
allocated by DCCP module)


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