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SubjectRe: question on kernel rwsem behaviour
On Fri, 21 Sep 2007 09:38:44 -0600 "Chris Friesen"
<cfriesen@nortel.com> wrote:

>
> Hi all,
>
> I just had a quick question on read-write semaphore semantics. Suppose
> someone holds a sema for reading, then someone else tries to aquire it
> for writing, and blocks. Finally, a third code path tries to aquire it
> for reading.
>
> Does this third code path get the sema, or does it wait for the writer?
>
> Based on looking at the implementation it seems like it waits, but I'd
> like to confirm that.

Yes, its fair in that sense.
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