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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2014-02-12 13:02:22 -0800
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2014-02-26 06:35:13 -0800
commit8857563b819b140aa8c9be920cfe44d5d3f808b7 (patch)
tree1fd7568acae29cd051e41f665c83a50c1bcdb10e /kernel/ksysfs.c
parentadd1f0995454374d90c9d6b2c420d2fba3d0a4e3 (diff)
downloadlinux-sh-8857563b819b140aa8c9be920cfe44d5d3f808b7.tar.gz
notifier: 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 __blocking_notifier_call_chain() which simply compares the RCU-protected pointer against NULL with no dereferencing. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'kernel/ksysfs.c')
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