Re: [PATCH] mm: mempolicy: use VM_BUG_ON_VMA in queue_pages_test_walk()

[Yang Shi]

On 1/27/20 10:17 AM, Qian Cai wrote:
> > On Jan 15, 2020, at 1:09 AM, Yang Shi <yang.shi@xxxxxxxxxxxxxxxxx> wrote:
> >
> > The VM_BUG_ON() is already used by queue_pages_test_walk(), it sounds
> > better to dump more debug information by using VM_BUG_ON_VMA() to help
> > debugging.
> Whatâs the problem this is trying to resolve? Was there an existing bug would trigger this?

Dumping more information to help debugging. I don't run into related bug 
personally.