diff options
| -rw-r--r-- | kernel/rcutree.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/rcutree.c b/kernel/rcutree.c index e486f7c3ffb8..3731141d8ad7 100644 --- a/kernel/rcutree.c +++ b/kernel/rcutree.c @@ -907,6 +907,12 @@ static void rcu_report_qs_rsp(struct rcu_state *rsp, unsigned long flags) unsigned long gp_duration; WARN_ON_ONCE(!rcu_gp_in_progress(rsp)); + + /* + * Ensure that all grace-period and pre-grace-period activity + * is seen before the assignment to rsp->completed. + */ + smp_mb(); /* See above block comment. */ gp_duration = jiffies - rsp->gp_start; if (gp_duration > rsp->gp_max) rsp->gp_max = gp_duration; |