Re: [PATCH v4 10/11] mm: lru: add VM_BUG_ON_FOLIO to lru maintenance function

[Johannes Weiner]

On Tue, May 24, 2022 at 02:05:50PM +0800, Muchun Song wrote:
> We need to make sure that the page is deleted from or added to the
> correct lruvec list. So add a VM_BUG_ON_FOLIO() to catch invalid
> users.
> 
> Signed-off-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>

Makes sense, but please use VM_WARN_ON_ONCE_FOLIO() so the machine can
continue limping along for extracting debug information.