Messages in this thread |  | | Date | Tue, 6 Feb 2001 21:50:53 +0100 | From | Jens Axboe <> | Subject | Re: [Kiobuf-io-devel] RFC: Kernel mechanism: Compound event wait |
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On Tue, Feb 06 2001, Manfred Spraul wrote: > > =) This is what I'm seeing: lots of processes waiting with wchan == > > __get_request_wait. With async io and a database flushing lots of io > > asynchronously spread out across the disk, the NR_REQUESTS limit is hit > > very quickly. > > > Has that anything to do with kiobuf or buffer head?
Nothing
> Several kernel functions need a "dontblock" parameter (or a callback, or > a waitqueue address, or a tq_struct pointer).
We don't even need that, non-blocking is implicitly applied with READA.
-- Jens Axboe
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