On Thu, Oct 24, 2024 at 06:23:01PM -0700, Shakeel Butt wrote:

During the era of memcg charge migration, the kernel has to be make sure
that the writeback stat updates do not race with the charge migration.
Otherwise it might update the writeback stats of the wrong memcg. Now
with the memcg charge migration deprecated, there is no more race for
writeback stat updates and the previous locking can be removed.

Signed-off-by: Shakeel Butt <shakeel.butt@linux.dev>

Reviewed-by: Roman Gushchin <roman.gushchin@linux.dev>