On Fri, Feb 5, 2021 at 10:28 AM Johannes Weiner [off-list ref] wrote:

There are two functions to flush the per-cpu data of an lruvec into
the rest of the cgroup tree: when the cgroup is being freed, and when
a CPU disappears during hotplug. The difference is whether all CPUs or
just one is being collected, but the rest of the flushing code is the
same. Merge them into one function and share the common code.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>

Reviewed-by: Shakeel Butt <redacted>

BTW what about the lruvec stats? Why not convert them to rstat as well?