The following commit has been merged into the core/rcu branch of tip: Commit-ID: c6dfd72b7a3b70a2054db0f73245ea2f762a8452 Gitweb: https://git.kernel.org/tip/c6dfd72b7a3b70a2054db0f73245ea2f762a8452 Author: Peter Enderborg <peter.enderborg@xxxxxxxx> AuthorDate: Thu, 04 Jun 2020 12:23:20 +02:00 Committer: Paul E. McKenney <paulmck@xxxxxxxxxx> CommitterDate: Mon, 29 Jun 2020 11:58:51 -07:00 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@xxxxxxxxx> Signed-off-by: Peter Enderborg <peter.enderborg@xxxxxxxx> Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx> --- kernel/rcu/tree.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index d17e5a0..c8196fa 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -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 = {
![]() |