diff options
| author |   Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2010-08-19 16:57:45 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2010-08-20 09:00:17 -0700 |
| commit | 80dcf60e6b97c7363971e7a0a788d8484d35f8a6 (patch) | |
| tree | 2f493fdf6a7a52675733ac74daa9e1cd9342a030 /arch/x86/mm/fault.c | |
| parent | rcu: combine duplicate code, courtesy of CONFIG_PREEMPT_RCU (diff) | |
| download | linux-dev-80dcf60e6b97c7363971e7a0a788d8484d35f8a6.tar.xz linux-dev-80dcf60e6b97c7363971e7a0a788d8484d35f8a6.zip | |
rcu: apply TINY_PREEMPT_RCU read-side speedup to TREE_PREEMPT_RCU
Replace one of the ACCESS_ONCE() calls in each of __rcu_read_lock()
and __rcu_read_unlock() with barrier() as suggested by Steve Rostedt in
order to avoid the potential compiler-optimization-induced bug noted by
Mathieu Desnoyers.
Located-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'arch/x86/mm/fault.c')
0 files changed, 0 insertions, 0 deletions