On 01/09/2011 12:15 AM, Trond Myklebust wrote:

From 8b2e60cef5c65eef41ab61286f62dec6bfb1ac27 Mon Sep 17 00:00:00 2001
From: Trond Myklebust <redacted>
Date: Sat, 8 Jan 2011 17:45:38 -0500
Subject: [PATCH] NFS: Don't use vm_map_ram() in readdir

vm_map_ram() is not available on NOMMU platforms, and causes trouble
on incoherrent architectures such as ARM when we access the page data
through both the direct and the virtual mapping.

The alternative is to use the direct mapping to access page data
for the case when we are not crossing a page boundary, but to copy
the data into a linear scratch buffer when we are accessing data
that spans page boundaries.

Signed-off-by: Trond Myklebust <redacted>

Tested-by: Marc Kleine-Budde <mkl@pengutronix.de>

..on AT91 (armv5)

regards, Marc

-- 
Pengutronix e.K.                  | Marc Kleine-Budde           |
Industrial Linux Solutions        | Phone: +49-231-2826-924     |
Vertretung West/Dortmund          | Fax:   +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686  | http://www.pengutronix.de   |

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