On Fri, Jun 14, 2024 at 09:07:42AM GMT, Baolin Wang wrote: > The mem_cgroup_migrate() will clear the memcg data of the old folio, > therefore, the callers must make sure the old folio is no longer on > the LRU list, otherwise the old folio can not get the correct lruvec > object without the memcg data, which could lead to potential problems [1]. > > Thus adding a VM_BUG_ON_FOLIO() to catch this issue. > > [1] https://lore.kernel.org/all/5ab860d8ee987955e917748f9d6da525d3b52690.1718326003.git.baolin.wang@xxxxxxxxxxxxxxxxx/ > Suggested-by: Shakeel Butt <shakeel.butt@xxxxxxxxx> > Signed-off-by: Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx> Acked-by: Shakeel Butt <shakeel.butt@xxxxxxxxx>
