commit 9beba3c54dd180a26a1da2027cfbe9edfaf9c40e
author Darren Hart <dvhltc@us.ibm.com> Thu Sep 24 11:54:47 2009 -0700
committer Ingo Molnar <mingo@elte.hu> Thu Sep 24 22:30:10 2009 +0200
tree b7ede0a88beb7ee195adf40a7a03140e77ba43ee
parent 0729e196147692d84d4c099fcff056eba2ed61d8

futex: Add memory barrier commentary to futex_wait_queue_me()

The memory barrier semantics of futex_wait_queue_me() are
non-obvious. Add some commentary to try and clarify it.

Signed-off-by: Darren Hart <dvhltc@us.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Dinakar Guniguntala <dino@in.ibm.com>
Cc: John Stultz <johnstul@us.ibm.com>
LKML-Reference: <20090924185447.694.38948.stgit@Aeon>
Signed-off-by: Ingo Molnar <mingo@elte.hu>