From mboxrd@z Thu Jan  1 00:00:00 1970
From: saeed bishara <saeed.bishara@gmail.com>
Subject: Re: Highmem issues with MMC filesystem
Date: Thu, 18 Mar 2010 15:42:25 +0200
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To: Russell King - ARM Linux <linux@arm.linux.org.uk>
Cc: Nicolas Pitre <nico@fluxnic.net>, Hemanth V <hemanthv@ti.com>, linux-mmc@vger.kernel.org, pierre@ossman.eu, linux-arm-kernel@lists.infradead.org

> In no case does the kernel ever clean user space cache lines for DMA;
> that's not the responsibility of the DMA API.
I understand that it's not the DMA API's responsibility to flush user
space cache lines, but other parts of the kernel should do that right?
otherwise DIRECT_IO won't work (though the issue here has nothing to
do with DIRECT_IO).

saeed