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Date: Sat, 7 Apr 2001 18:56:53 -0700
From: Anton Blanchard <anton@samba.org>
To: "Stephen E. Clark" <sclark46@gte.net>
Cc: linux-kernel@vger.kernel.org
Subject: Re: uninteruptable sleep
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> That happened to me with 2.4.2-ac28 when I tried using DRM.
> I also got the following messages in syslog.
> 
> /var/log/messages.1:Mar 31 12:15:04 joker kernel:
> [drm:r128_do_wait_for_fifo] *ERROR* r128_do_wait_for_fifo failed!

You need to replace down(...->mmap_sem), up(...->mmap_sem) with
down_write(...), up_write(...) in the X11 r128 drm kernel module.

Anton
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