synchronize_rcu() does the stuff as needed. Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Doug Thompson <dougthompson@xmission.com> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>