Bug#385754: rwlocks can deadlock

[Matthew Wilcox <matthew@wil.cx>]

Package: linux-image-2.6.17-2-parisc
Version: 2.6.17-6

I found about 4 different ways to deadlock the current implementation of
rwlocks on parisc.  I've committed a patch to our git tree which should
improve the situation, although it's obviously not had a lot of testing
yet, and is subject to being improved further.

You can get the commit from
http://git.parisc-linux.org/?p=linux-2.6.git;a=commitdiff;h=513b38677e9bb51d32f4cb401105bf828dfcd685

I do think it's worth putting this in the Debian Etch kernel since it's
a definite improvement over what's currently in there.