From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [patch for 2.6.33? 1/1] ata: call flush_dcache_page() around
 PIO data transfers in libata-aff.c
Date: Tue, 02 Feb 2010 15:39:27 -0800 (PST)
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To: James.Bottomley@suse.de
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From: James Bottomley <James.Bottomley@suse.de>
Date: Tue, 02 Feb 2010 17:32:48 -0600

> What it looks like we need is kmap_for_pio() and kunmap_for_pio() which
> take flags (or API extensions) indicating whether we're transferring to
> or from the device, which return the correct kernel address to the page
> (mapping it if it's in highmem) and perform the correct
> flushes/invalidates.

That sounds like a good idea.