Re: [PATCH] memory_hotplug: cond_resched in __remove_pages

From: Andrew Morton
Date: Wed Oct 31 2018 - 15:15:54 EST

On Wed, 31 Oct 2018 13:58:40 +0100 Michal Hocko <mhocko@xxxxxxxxxx> wrote:

> From: Michal Hocko <mhocko@xxxxxxxx>
> We have received a bug report that unbinding a large pmem (>1TB)
> can result in a soft lockup:
> ...
> It has been reported on an older (4.12) kernel but the current upstream
> code doesn't cond_resched in the hot remove code at all and the given
> range to remove might be really large. Fix the issue by calling cond_resched
> once per memory section.

Worthy of a cc:stable, I suggest?