linux-kernel - Re: [PATCH 2/3] rhashtable-test: retry insert operations in threads

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Message-ID: <20150901135019.GA13629@gondor.apana.org.au>
Date:	Tue, 1 Sep 2015 21:50:19 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	tgraf@...g.ch, davem@...emloft.net, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, fengguang.wu@...el.com,
	wfg@...ux.intel.com, lkp@...org
Subject: Re: [PATCH 2/3] rhashtable-test: retry insert operations in threads

On Tue, Sep 01, 2015 at 03:43:11PM +0200, Phil Sutter wrote:
>
> Hmm. Since memory allocation is first tried with GFP_ATOMIC set and upon
> failure retried in background, this seems like a situation which might
> happen during normal use. If that already indicates a severe problem,
> why retry in background at all?

It should be tried in the background first at 70% and only when
that fails would we hit the 100% case and then we will try it
with GFP_ATOMIC.  If that fails then the insertion will fail.

Cheers,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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