Commit c6dfd72b authored Jun 04, 2020 by Peter Enderborg Committed by Paul E. McKenney Jun 29, 2020

rcu: Stop shrinker loop



The count and scan can be separated in time, and there is a fair chance
that all work is already done when the scan starts, which might in turn
result in a needless retry.  This commit therefore avoids this retry by
returning SHRINK_STOP.

Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Signed-off-by: Peter Enderborg <peter.enderborg@sony.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

parent e40bb921

kernel/rcu/tree.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -3332,7 +3332,7 @@ kfree_rcu_shrink_scan(struct shrinker shrink, struct shrink_control sc)
		break;
		}

		return freed;
		return freed == 0 ? SHRINK_STOP : freed;
		}

		static struct shrinker kfree_rcu_shrinker = {

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