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

[Qian Cai]

> 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?