Re: [PATCH v2] mm/migrate: fix softlockup in do_pages_move() with huge page arrays

[shao.mingyin]

Hi David,

fair enough -- and your reading is correct: preempt=none is unselectable
under PREEMPT_DYNAMIC, and the arches that can still pick PREEMPT_NONE
have no NUMA, so mainline cannot reach this path.

I was aiming at the 6.6 LTS configs that shipped PREEMPT_NONE + NUMA: two
lines of cond_resched(), no behaviour change, same as do_pages_stat() got
in 8e934ab44389.  If you and Andrew would rather not carry a stable-only
fix, just say so and I will withdraw it.

Thanks,
Shao