Re: [patch] Real-Time Preemption, -RT-2.6.11-rc3-V0.7.38-01

[Andrew Morton]

Ingo Molnar <mingo@xxxxxxx> wrote:
>
> 
> * Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:
> 
> > Damn! The answer was right there in front of my eyes! Here's the
> > cleanest solution. I forgot about wait_on_bit_lock.  I've converted
> > all the locks to use this instead. [...]
> 
> ah, indeed, this looks really nifty. Andrew?
> 

There's a little lock ranking diagram in jbd.h which tells us that these
locks nest inside j_list_lock and j_state_lock.  So I guess you'll need to
turn those into semaphores.

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