linux-kernel - Re: [PATCH 3/3] net-dccp: Suppress warning about large allocations from DCCP

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Message-Id: <20090622.161502.74508182.davem@davemloft.net>
Date:	Mon, 22 Jun 2009 16:15:02 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	mel@....ul.ie
Cc:	akpm@...ux-foundation.org, mingo@...e.hu,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	htd@...cy-poultry.org
Subject: Re: [PATCH 3/3] net-dccp: Suppress warning about large allocations
 from DCCP

From: Mel Gorman <mel@....ul.ie>
Date: Mon, 22 Jun 2009 16:43:34 +0100

> The DCCP protocol tries to allocate some large hash tables during
> initialisation using the largest size possible.  This can be larger than
> what the page allocator can provide so it prints a warning. However, the
> caller is able to handle the situation so this patch suppresses the warning.
> 
> Signed-off-by: Mel Gorman <mel@....ul.ie>

It's probably much more appropriate to make this stuff use
alloc_large_system_hash(), like TCP does (see net/ipv4/tcp.c
tcp_init()).

All of this complicated DCCP hash table size computation code will
simply disappear.  And it'll fix the warning too :-)

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