Re: [PATCH cgroup/for-5.19-fixes] cgroup: Use separate src/dst nodes when preloading css_sets for migration

[Tejun Heo]

On Mon, Jun 13, 2022 at 12:19:50PM -1000, Tejun Heo wrote:
> Each cset (css_set) is pinned by its tasks. When we're moving tasks around
> across csets for a migration, we need to hold the source and destination
> csets to ensure that they don't go away while we're moving tasks about. This
> is done by linking cset->mg_preload_node on either the
> mgctx->preloaded_dst_csets or mgctx->preloaded_dst_csets list. Using the
> same cset->mg_preload_node for both the src and dst lists was deemed okay as
> a cset can't be both the source and destination at the same time.

Applied to cgroup/for-5.19-fixes w/ patch description fixed.

Thanks.

-- 
tejun