netdev - Re: rhashtable: ENOMEM errors when hit with a flood of insertions

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Message-ID: <20151204000702.GA8863@gondor.apana.org.au>
Date:	Fri, 4 Dec 2015 08:07:02 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Phil Sutter <phil@....cc>, davem@...emloft.net,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	tgraf@...g.ch, fengguang.wu@...el.com, wfg@...ux.intel.com,
	lkp@...org
Subject: Re: rhashtable: ENOMEM errors when hit with a flood of insertions

On Thu, Dec 03, 2015 at 08:08:39AM -0800, Eric Dumazet wrote:
>
> Well, it will fail before this point if memory is fragmented.

Indeed, I was surprised that it even worked up to that point,
possibly because the previous resizes might have actually been
done in process context.

> Anyway, __vmalloc() can be used with GFP_ATOMIC, have you tried this ?

Ah I didn't know that.  That would be much simpler.  I'll give it a
try.

Thanks Eric!
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
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