Commit d6d67e72 authored Apr 30, 2013 by Eric Wong Committed by Linus Torvalds Apr 30, 2013

epoll: cleanup: use RCU_INIT_POINTER when nulling



It is always safe to use RCU_INIT_POINTER to NULL a pointer.  This results
in slightly smaller/faster code.

Signed-off-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 450d89ec

fs/eventpoll.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1213,7 +1213,7 @@ static noinline void ep_destroy_wakeup_source(struct epitem *epi)
		{
		struct wakeup_source *ws = ep_wakeup_source(epi);

		rcu_assign_pointer(epi->ws, NULL);
		RCU_INIT_POINTER(epi->ws, NULL);

		/*
		* wait for ep_pm_stay_awake_rcu to finish, synchronize_rcu is