linux-kernel - Re: Regression still in next for drop migrate type checks

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Message-ID: <20171104082500.qvzbb2kw4suo6cgy@dhcp22.suse.cz>
Date:   Sat, 4 Nov 2017 09:25:00 +0100
From:   Michal Hocko <mhocko@...nel.org>
To:     Tony Lindgren <tony@...mide.com>
Cc:     Joonsoo Kim <iamjoonsoo.kim@....com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Russell King - ARM Linux <linux@...linux.org.uk>,
        linux-kernel@...r.kernel.org
Subject: Re: Regression still in next for drop migrate type checks

On Fri 03-11-17 09:00:12, Tony Lindgren wrote:
> Hi all,
> 
> Looks like I'm still carrying patch "mm: distinguish CMA and MOVABLE
> isolation in  has_unmovable_pages" from Michal [1] for commit e1d753dff0fa
> ("mm: drop migrate type checks from has_unmovable_pages") and Linux next
> has been broken for CMA for few weeks now as noted in the discussion
> also at [1].
> 
> What's the status of this regression? How come it's been known
> broken for two weeks and still not fixed or reverted in next?
> This is clearly is not suitable for "wider testing" ;)

This is the first time I hear about the regression. Joonsoo has pointed
out that there might be a problem but he didn't have any specific
failure in hands. The fix has been posted [1] and Andrew has picked it
up few days ago. Could you try to apply that patch? It will show up in
linux-next as soon as Andrew releases mmotm.

[1] http://lkml.kernel.org/r/20171019122118.y6cndierwl2vnguj@dhcp22.suse.cz
-- 
Michal Hocko
SUSE Labs