Re: [patch] optimise loop driver a bit

[Andrew Morton]

Nick Piggin <nickpiggin@xxxxxxxxxxxx> wrote:
>
> Looks like locking can be optimised quite a lot.

So I've peered suspiciously at the ->lo_pending handling for some time and
am unconvinced.  Are you sure that the error path in loop_make_request() is
correct?  The old code decremented the pending count in there.

Why do we need that nasty-looking `pending' local in loop_thread()?
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