Commit ce0a825e authored May 23, 2019 by Paul E. McKenney

rcu/nocb: Make __call_rcu_nocb_wake() safe for many callbacks

It might be hard to imagine having more than two billion callbacks
queued on a single CPU's ->cblist, but someone will do it sometime.
This commit therefore makes __call_rcu_nocb_wake() handle this situation
by upgrading local variable "len" from "int" to "long".

Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>

parent 383e1332

kernel/rcu/tree_plugin.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -1615,7 +1615,7 @@ static void __call_rcu_nocb_wake(struct rcu_data *rdp, bool was_alldone,
		unsigned long flags)
		__releases(rdp->nocb_lock)
		{
		int len;
		long len;
		struct task_struct *t;

		// If we are being polled or there is no kthread, just leave.

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