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genetlink: Remove smp_read_barrier_depends() from comment 

Now that smp_read_barrier_depends() has been de-emphasized, the less
said about it, the better.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Paul E. McKenney 2017-11-27 09:23:24 -08:00
parent 9ad3c143d7
commit 632a5c1c8f
1 changed files with 1 additions and 2 deletions
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3
include/linux/genetlink.h
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@ -31,8 +31,7 @@ extern wait_queue_head_t genl_sk_destructing_waitq;
* @p: The pointer to read, prior to dereferencing
*
* Return the value of the specified RCU-protected pointer, but omit
* both the smp_read_barrier_depends() and the READ_ONCE(), because
* caller holds genl mutex.
* the READ_ONCE(), because caller holds genl mutex.
*/
#define genl_dereference(p) \
rcu_dereference_protected(p, lockdep_genl_is_held())