On Tue, Dec 12, 2023 at 10:43 AM Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote: > > On Mon, 4 Dec 2023 23:58:56 +0000 Shakeel Butt <shakeelb@xxxxxxxxxx> wrote: > > > On Mon, Dec 04, 2023 at 03:49:01PM -0800, Yosry Ahmed wrote: > > [...] > > > > > > From 19af26e01f93cbf0806d75a234b78e48c1ce9d80 Mon Sep 17 00:00:00 2001 > > > From: Yosry Ahmed <yosryahmed@xxxxxxxxxx> > > > Date: Mon, 4 Dec 2023 23:43:29 +0000 > > > Subject: [PATCH] mm: memcg: remove stats flushing mutex > > > > > > The mutex was intended to make the waiters sleep instead of spin, and > > > such that we can check the update thresholds again after acquiring the > > > mutex. However, the mutex has a risk of priority inversion, especially > > > since the underlying rstat lock can de dropped while the mutex is held. > > > > > > Synthetic testing with high concurrency of flushers shows no > > > regressions without the mutex, so remove it. > > > > > > Suggested-by: Shakeel Butt <shakeelb@xxxxxxxxxx> > > > Signed-off-by: Yosry Ahmed <yosryahmed@xxxxxxxxxx> > > > > Acked-by: Shakeel Butt <shakeelb@xxxxxxxxxx> > > > > I'd like to move this series into mm-stable soon. Are we all OK with that? Looking forward to that :)
