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SubjectRe: [patch] Real-Time Preemption, -RT-2.6.13-rc4-V0.7.52-01

* Steven Rostedt <> wrote:

> So, the only other solutions that I can think of is:
> a) add yet another (bloat) lock to the buffer head.
> b) Still use your b_update_lock for the jbd_lock_bh_journal_head and
> change the jbd_lock_bh_state to what I discussed earlier, and that
> being the hash wait_on_bit code.

could you try a), how clean does it get? Personally i'm much more in
favor of cleanliness. On the vanilla kernel a spinlock is zero bytes on
UP [the most RAM-sensitive platform], and it's a word on typical SMP.

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