atomics: Add header comment so spin_unlock_wait()

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There is material describing the ordering guarantees provided by
spin_unlock_wait(), but it is not necessarily easy to find.  This commit
therefore adds a docbook header comment to this function informally
describing its semantics.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>

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Paul E. McKenney 2017-04-19 16:20:07 -07:00

parent 79269ee3fa

commit 6016ffc387

1 changed files with 20 additions and 0 deletions

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include/linux/spinlock.h

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