From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Tue, 02 Sep 2008 17:35:02 +0200
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai-core] [PATCH] POSIX: Fix race when setting claimed bit
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To: Jan Kiszka <jan.kiszka@domain.hid>
Cc: xenomai-core <xenomai@xenomai.org>

Jan Kiszka wrote:
> OTOH, we can safe some text size which is precious as well. So I'm
> convinced to go your way (with a modification):

My approach sucks: we get a silly atomic_cmpxchg if the mutex is already
claimed, which is as least as much a common case as a currently
unclaimed mutex. Need to think a bit. But I think a good solution is to
re-read only if the mutex has been seen as already claimed.

-- 
                                                 Gilles.