From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Manfred Spraul <manfred@colorfullife.com>
Cc: John Mock <kd6pag@qsl.net>,
Linux Kernel list <linux-kernel@vger.kernel.org>
Subject: Re: PPC: slab error in cache_free_debugcheck() from sd_revalidate_disk
Date: Sat, 18 Oct 2003 23:12:37 +0200 [thread overview]
Message-ID: <1066511556.4777.286.camel@gaston> (raw)
In-Reply-To: <3F919763.1000901@colorfullife.com>
> That looks like a bug Ben reported some time ago: The dma controller
> trashes the whole cacheline when it transfers data from disk to memory.
> I think the only solution is to disable redzoning for the kmalloc
> caches, or to use get_free_pages instead of kmalloc for the disk buffers,.
Looks like it indeed. I will probably send a patch to use get_free_page()
instead one of these days (after I've moved)
Ben.
next prev parent reply other threads:[~2003-10-18 21:13 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-18 19:41 PPC: slab error in cache_free_debugcheck() from sd_revalidate_disk Manfred Spraul
2003-10-18 21:12 ` Benjamin Herrenschmidt [this message]
-- strict thread matches above, loose matches on Subject: below --
2003-10-18 17:18 John Mock
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