On 01/09/2011 12:15 AM, Trond Myklebust wrote: > From 8b2e60cef5c65eef41ab61286f62dec6bfb1ac27 Mon Sep 17 00:00:00 2001 > From: Trond Myklebust <Trond.Myklebust@xxxxxxxxxx> > 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 <Trond.Myklebust@xxxxxxxxxx> Tested-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx> ..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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