locking/doc: Rename LOCK/UNLOCK to ACQUIRE/RELEASE

locking/doc: Rename LOCK/UNLOCK to ACQUIRE/RELEASE

The LOCK and UNLOCK barriers as described in our barrier document are
generally known as ACQUIRE and RELEASE barriers in other literature.

Since we plan to introduce the acquire and release nomenclature in
generic kernel primitives we should amend the document to avoid
confusion as to what an acquire/release means.

Reviewed-by: "Paul E. McKenney" <[email protected]>
Signed-off-by: Peter Zijlstra <[email protected]>
Acked-by: Mathieu Desnoyers <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Michael Neuling <[email protected]>
Cc: Russell King <[email protected]>
Cc: Geert Uytterhoeven <[email protected]>
Cc: Heiko Carstens <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Martin Schwidefsky <[email protected]>
Cc: Victor Kaplansky <[email protected]>
Cc: Tony Luck <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>