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netlink: Remove smp_read_barrier_depends() from comment

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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: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Cc: Florian Westphal <fw@strlen.de>
Cc: <netfilter-devel@vger.kernel.org>
Cc: <coreteam@netfilter.org>
This commit is contained in:
Paul E. McKenney 2017-11-27 09:26:06 -08:00
parent 632a5c1c8f
commit dfe1b44278
1 changed files with 1 additions and 2 deletions
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3
include/linux/netfilter/nfnetlink.h
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@ -67,8 +67,7 @@ static inline bool lockdep_nfnl_is_held(__u8 subsys_id)
* @ss: The nfnetlink subsystem ID
*
* Return the value of the specified RCU-protected pointer, but omit
* both the smp_read_barrier_depends() and the READ_ONCE(), because
* caller holds the NFNL subsystem mutex.
* the READ_ONCE(), because caller holds the NFNL subsystem mutex.
*/
#define nfnl_dereference(p, ss) \
rcu_dereference_protected(p, lockdep_nfnl_is_held(ss))