netdev - Re: [PATCH net-2.6] jme: Fix unmap error (Causing system freeze)

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Message-ID: <20110721193008.GC9766@sequoia.sous-sol.org>
Date:	Thu, 21 Jul 2011 12:30:08 -0700
From:	Chris Wright <chrisw@...s-sol.org>
To:	cooldavid@...ldavid.org
Cc:	David Miller <davem@...emloft.net>,
	linux-netdev <netdev@...r.kernel.org>,
	Aries Lee <arieslee@...cron.com>,
	Devinchiu <devinchiu@...cron.com>,
	Jason Lamb <jason@...bhome.org>,
	Marcus Becker <marcus.disi@...il.com>,
	Marc Schiffbauer <mschiff@...too.org>,
	Jason Long <jason@...gsoftware.com>, stable@...nel.org
Subject: Re: [PATCH net-2.6] jme: Fix unmap error (Causing system freeze)

* cooldavid@...ldavid.org (cooldavid@...ldavid.org) wrote:
> From: Guo-Fu Tseng <cooldavid@...ldavid.org>
> 
> This patch add the missing dma_unmap().
> Which solved the critical issue of system freeze on heavy load.
> 
> Michal Miroslaw's rejected patch:
> [PATCH v2 10/46] net: jme: convert to generic DMA API
> Pointed out the issue also, thank you Michal.
> But the fix was incorrect. It would unmap needed address
> when low memory.
> 
> Got lots of feedback from End user and Gentoo Bugzilla.
> https://bugs.gentoo.org/show_bug.cgi?id=373109
> Thank you all. :)

Also referred to in kernel bugzilla:

https://bugzilla.kernel.org/show_bug.cgi?id=39312

> Cc: stable@...nel.org
> Signed-off-by: Guo-Fu Tseng <cooldavid@...ldavid.org>

Acked-by: Chris Wright <chrisw@...s-sol.org>
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