tree 8659ba52925b00f7843bb806f29c5cf4bae76348
parent ae1670339c95c3ff96ab10582506cf827c5fecc8
author Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1392238269 -0800
committer Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1392678141 -0800

fs: 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 __alloc_fd(),
which simply compares the RCU-protected pointer against NULL with no
dereferencing.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: linux-fsdevel@vger.kernel.org
Reviewed-by: Josh Triplett <josh@joshtriplett.org>