mm: thp: make split queue lock safe when LRU pages are reparented

mm: thp: make split queue lock safe when LRU pages are reparented

Similar to the lruvec lock, we use the same approach to make the split
queue lock safe when LRU pages are reparented.

Link: https://lkml.kernel.org/r/20220621125658.64935-7-songmuchun@bytedance.com
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Acked-by: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michal Koutný <mkoutny@suse.com>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Waiman Long <longman@redhat.com>
Cc: Xiongchun Duan <duanxiongchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>