mtx_lock_recurse/mtx_unlock_recurse functions (proof-of-concept).

[Poul-Henning Kamp]

In message <20040408213647.GL661 at darkness.comp.waw.pl>, Pawel Jakub Dawidek wri
tes:
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>Hi.
>
>As was discussed, it will be helpful to have functions, that are able
>to acquire lock recursively, even if lock itself isn't recursable.

Sounds evil to me...

Does your patch also make witness aware of this ?

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