From: Sasha Levin <sasha.levin@oracle.com>
To: "Kirill A. Shutemov" <kirill@shutemov.name>,
Michal Hocko <mhocko@suse.cz>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org
Subject: Re: [PATCH 1/2] mm, oom: skip mlocked VMAs in __oom_reap_vmas()
Date: Tue, 5 Jan 2016 10:44:49 -0500 [thread overview]
Message-ID: <568BE4F1.5060804@oracle.com> (raw)
In-Reply-To: <20160105150339.GD19907@node.shutemov.name>
On 01/05/2016 10:03 AM, Kirill A. Shutemov wrote:
> On Tue, Jan 05, 2016 at 02:33:38PM +0100, Michal Hocko wrote:
>> > On Tue 29-12-15 23:46:29, Kirill A. Shutemov wrote:
>>> > > As far as I can see we explicitly munlock pages everywhere before unmap
>>> > > them. The only case when we don't to that is OOM-reaper.
>>> > >
>>> > > I don't think we should bother with munlocking in this case, we can just
>>> > > skip the locked VMA.
>>> > >
>>> > > I think this patch would fix this crash:
>>> > > http://lkml.kernel.org/r/5661FBB6.6050307@oracle.com
>> >
>> > Btw, do you happen to have the full log here. OOM reaper can only
>> > interfere if there was an OOM killer invoked.
> No, I don't. Sasha?
I don't have the log, but my setup does invoke the OOM killer occasionally.
Thanks,
Sasha
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next prev parent reply other threads:[~2016-01-05 15:44 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-29 20:46 [PATCH 0/2] THP mlock fix Kirill A. Shutemov
2015-12-29 20:46 ` [PATCH 1/2] mm, oom: skip mlocked VMAs in __oom_reap_vmas() Kirill A. Shutemov
2016-01-05 12:47 ` Michal Hocko
2016-01-05 13:10 ` Kirill A. Shutemov
2016-01-05 13:31 ` Michal Hocko
2016-01-05 15:03 ` Kirill A. Shutemov
2016-01-05 15:45 ` Michal Hocko
2016-01-05 13:33 ` Michal Hocko
2016-01-05 15:03 ` Kirill A. Shutemov
2016-01-05 15:44 ` Sasha Levin [this message]
2015-12-29 20:46 ` [PATCH 2/2] mm, thp: clear PG_mlocked when last mapping gone Kirill A. Shutemov
2016-01-05 9:37 ` Vlastimil Babka
2016-01-05 14:37 ` Kirill A. Shutemov
2015-12-29 20:52 ` [PATCH 0/2] THP mlock fix Sasha Levin
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