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rcu: Move rcu_gp_in_progress() to ->gp_seq 

This commit makes rcu_gp_in_progress() use ->gp_seq instead of
->completed and ->gpnum.  The READ_ONCE() invocations are buried
in rcu_seq_current().

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
Paul E. McKenney 2018-04-27 21:25:01 -07:00
parent e0da2374c3
commit ba04107fc9
1 changed files with 1 additions and 1 deletions
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2
kernel/rcu/tree.c
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@ -219,7 +219,7 @@ unsigned long rcu_rnp_online_cpus(struct rcu_node *rnp)
*/ */
static int rcu_gp_in_progress(struct rcu_state *rsp) static int rcu_gp_in_progress(struct rcu_state *rsp)
{ {
return READ_ONCE(rsp->completed) != READ_ONCE(rsp->gpnum); return rcu_seq_state(rcu_seq_current(&rsp->gp_seq));
} }
/* /*