Messages in this thread | | | Date | Thu, 4 Jun 2020 09:31:00 -0700 | From | "Paul E. McKenney" <> | Subject | Re: [PATCH] rcu: Stop shrinker loop |
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On Thu, Jun 04, 2020 at 03:42:55PM +0200, Uladzislau Rezki wrote: > On Thu, Jun 04, 2020 at 12:23:20PM +0200, Peter Enderborg wrote: > > The count and scan can be separated in time. It is a fair chance > > that all work is already done when the scan starts. It > > then might retry. This is can be avoided with returning SHRINK_STOP. > > > > Signed-off-by: Peter Enderborg <peter.enderborg@sony.com> > > --- > > 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 c716eadc7617..8b36c6b2887d 100644 > > --- a/kernel/rcu/tree.c > > +++ b/kernel/rcu/tree.c > > @@ -3310,7 +3310,7 @@ kfree_rcu_shrink_scan(struct shrinker *shrink, struct shrink_control *sc) > > break; > > } > > > > - return freed; > > + return freed == 0 ? SHRINK_STOP : freed; > > } > > > The loop will be stopped anyway sooner or later, but sooner is better :) > To me that change makes sense. > > Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Queued, thank you both!
Thanx, Paul
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