xfs deadlock in stable kernel 3.0.4

[Christoph Hellwig]

On Sat, Sep 10, 2011 at 02:23:12PM +0200, Stefan Priebe wrote:
> Hello List,
> 
> on some of our heavy loaded servers using xfs we're seeing a deadlock where reading/writing to the xfs filesystem suddenly stops working.
> 
> Here you can find sysrq w triggered log messages of the locked processes.
> 
> http://pastebin.com/JWjrbrh4

What kind of workload are you running?  Also did the workload run fine
with an older kernel, and if yes which one?