[PATCH tip/core/rcu 0/2] Signal-related changes for 3.19

[Paul E. McKenney]

Hello!

This series updates RCU handling in signals:

1.	Prevents a possible very long RCU read-side critical section
	in kill_pid_info().

2.	Explain why the "obviously buggy" freeing of sighand by
	__cleanup_sighand() without an RCU grace period really isn't
	buggy, courtesy of Oleg Nesterov.

							Thanx, Paul

------------------------------------------------------------------------

 b/kernel/fork.c   |    5 ++++-
 b/kernel/signal.c |   42 +++++++++++++++++++++++++-----------------
 2 files changed, 29 insertions(+), 18 deletions(-)

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