From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jan de Kruyf <jan.de.kruyf@gmail.com>
Subject: Filesystem lockup with CONFIG_PREEMPT_RT
Date: Mon, 7 Jul 2014 10:48:30 +0200
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Hope I do not kick in an open door, but

Linux JanDell 3.2.0-0.bpo.3-rt-686-pae #1 SMP PREEMPT RT Thu Aug 23
09:55:27 UTC 2012 i686 GNU/Linux
and
Linux jan 3.2.0-4-rt-amd64 #1 SMP PREEMPT RT Debian 3.2.57-3+deb7u2
x86_64 GNU/Linux

does not give the same problem that I experienced with XFS.
So there is a hickup between version 3.2-rt and 3.10-rt I would say.

cheers,

j.