Re: [PATCH 06/14] mm, migrate: Immediately fail migration of a page with no migration handler

From: Mel Gorman
Date: Thu Dec 20 2018 - 15:31:33 EST

On Thu, Dec 20, 2018 at 11:44:57AM -0800, Yang Shi wrote:
> On Fri, Dec 14, 2018 at 3:03 PM Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx> wrote:
> >
> > Pages with no migration handler use a fallback hander which sometimes
> > works and sometimes persistently fails such as blockdev pages. Migration
> A minor correction. The above statement sounds not accurate anymore
> since Jan Kara had patch series (blkdev: avoid migration stalls for
> blkdev pages) have blockdev use its own migration handler.

I'm aware given that I reviewed that series. The statement was correct
at the time of writing. I'll alter the example when rebased on top of
Jan's work.

Mel Gorman