Re: Deadlock in net/sunrpc/sched.c

[Simon Derr]

On Thu, 2 Mar 2006, Trond Myklebust wrote:

> > Now to exit this loop, B needs to reach __rpc_do_wake_up_task() where a 
> > list_del will occur. But for this the RPC_TASK_WAKEUP must be released by 
> > process A, and this won't happen until process B releases the queue 
> > spinlock. --> deadlock.
> 
> Could you see if this fixes it?
> 
> Cheers,
>   Trond


Thanks, I will apply it.
But don't hold your breath though, this happened on a large cluster with 
high security and restricted access so I can't just try it like I would 
on my desktop machine.
There will probably be several weeks before I get back to you.

	Simon.

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