summaryrefslogtreecommitdiffstats
path: root/kernel/rcu
diff options
context:
space:
mode:
authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2017-03-15 16:34:11 -0700
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2017-04-18 11:38:21 -0700
commit91e27c356c96d760f5c283f05627ed976377debb (patch)
treed0a614d0d588da58af3a9c38deec68d7707aee24 /kernel/rcu
parente95d68d2127716c7d6fb144bb19ef48ce9f37393 (diff)
downloadlinux-91e27c356c96d760f5c283f05627ed976377debb.tar.bz2
srcu: Fix bogus try_check_zero() comment
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcu')
-rw-r--r--kernel/rcu/srcu.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/kernel/rcu/srcu.c b/kernel/rcu/srcu.c
index 0b511de7ca4d..1a2dc74bb625 100644
--- a/kernel/rcu/srcu.c
+++ b/kernel/rcu/srcu.c
@@ -260,10 +260,9 @@ static void srcu_gp_start(struct srcu_struct *sp)
}
/*
- * @@@ Wait until all pre-existing readers complete. Such readers
- * will have used the index specified by "idx".
- * the caller should ensures the ->completed is not changed while checking
- * and idx = (->completed & 1) ^ 1
+ * Wait until all readers counted by array index idx complete, but loop
+ * a maximum of trycount times. The caller must ensure that ->completed
+ * is not changed while checking.
*/
static bool try_check_zero(struct srcu_struct *sp, int idx, int trycount)
{