Re: [Bug #14388] keyboard under X with 2.6.31

Paul Fulghum
2009-10-13T13:25:22Z

Alan Cox wrote:
> The tty_buffer_request_room() is a hint to help better allocation. It's
> also only safe to run from the receiving path of the driver (which
> has always been assumed not to make two parallel calls to the function at
> once.

Yes, the locking only synchronizes between
producer and consumer. It does not coordinate between
multiple producers as it provides a lot of flexibility
(and responsibility) to the producer in how to fill the buffers.

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Paul Fulghum
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