tree e76b0548ed7bc4a2927aa3bc4e3bec2bc8adf7da
parent e3ebf0d457039c857dfeb45434e3be9780dea499
author Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1392672957 -0800
committer Jens Axboe <axboe@fb.com> 1392754886 -0800

block: Substitute rcu_access_pointer() for rcu_dereference_raw()

(Trivial patch.)

If the code is looking at the RCU-protected pointer itself, but not
dereferencing it, the rcu_dereference() functions can be downgraded to
rcu_access_pointer().  This commit makes this downgrade in blkg_destroy()
and ioc_destroy_icq(), both of which simply compare the RCU-protected
pointer against another pointer with no dereferencing.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Jens Axboe <axboe@fb.com>