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

[Andrew Morton]

Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:
>
> > did you try the canonical way of putting a spinlock into every
>  > buffer_head?
>  >
> 
>  No, I'll try that now. I just didn't want to modify the buffer head struct
>  just for journaling.  But if it is the quickest and easiest fix, then I'll
>  submit it and we can change it later.

You'll need two spinlocks.  jbd_lock_bh_state() and jbd_lock_bh_journal_head().
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