rcu: No ordering for rcu_assign_pointer() of NULL

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This commit does a compile-time check for rcu_assign_pointer() of NULL,
and uses WRITE_ONCE() rather than smp_store_release() in that case.

Reported-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

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This commit is contained in:

Paul E. McKenney 2016-05-01 18:46:54 -07:00

parent 810ce8b5df

commit 3a37f7275c

1 changed files with 10 additions and 1 deletions

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11

include/linux/rcupdate.h

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