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SubjectRe: [RFC,PATCH] use rcu for fasync_lock
Davide Libenzi wrote:
> First, f_op->poll() does not allow you to send and event mask,
> and this requires the driver to indiscriminately wake up both IN and OUT
> waiters. The second area will be to give the driver to specify some "info"
> wake_up_info(&wq, XXXX);

I agree totally, both of these are (and always were, isn't it amazing
how long these things take) the way to do it "properly".

> The good thing is that migration can be gradual, beside the initial
> dumb compile fixing to suite the new f_op->poll() interface.

Even that's trivial, if a little time consuming, as it's only a
function signature change. Actually using the extra argument is
optional for each driver.

-- Jamie
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