linux-kernel - Re: [PATCH v1 0/2] mm/page_alloc: fix stalls/soft lockups with huge VMs

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Message-Id: <26A3B286-7090-4DD2-8E30-C2BA846AF699@redhat.com>
Date:   Wed, 1 Apr 2020 20:29:46 +0200
From:   David Hildenbrand <david@...hat.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Daniel Jordan <daniel.m.jordan@...cle.com>,
        Pankaj Gupta <pankaj.gupta.linux@...il.com>,
        David Hildenbrand <david@...hat.com>,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        Alexander Duyck <alexander.duyck@...il.com>,
        Baoquan He <bhe@...hat.com>,
        Kirill Tkhai <ktkhai@...tuozzo.com>,
        Michal Hocko <mhocko@...nel.org>,
        Oscar Salvador <osalvador@...e.de>,
        Pavel Tatashin <pasha.tatashin@...een.com>,
        Shile Zhang <shile.zhang@...ux.alibaba.com>,
        Yiqian Wei <yiwei@...hat.com>
Subject: Re: [PATCH v1 0/2] mm/page_alloc: fix stalls/soft lockups with huge VMs



> Am 01.04.2020 um 20:06 schrieb Andrew Morton <akpm@...ux-foundation.org>:
> 
> On Wed, 1 Apr 2020 10:45:29 -0400 Daniel Jordan <daniel.m.jordan@...cle.com> wrote:
> 
>> On Wed, Apr 01, 2020 at 04:31:51PM +0200, Pankaj Gupta wrote:
>>>>> On 01.04.20 12:41, David Hildenbrand wrote:
>>>>>> Two fixes for misleading stall messages / soft lockups with huge nodes /
>>>>>> zones during boot without CONFIG_PREEMPT.
>>>>>> 
>>>>>> David Hildenbrand (2):
>>>>>>  mm/page_alloc: fix RCU stalls during deferred page initialization
>>>>>>  mm/page_alloc: fix watchdog soft lockups during set_zone_contiguous()
>>>>>> 
>>>>>> mm/page_alloc.c | 2 ++
>>>>>> 1 file changed, 2 insertions(+)
>>>>>> 
>>>>> 
>>>>> Patch #1 requires "[PATCH v3] mm: fix tick timer stall during deferred
>>>>> page init"
>>>>> 
>>>>> https://lkml.kernel.org/r/20200311123848.118638-1-shile.zhang@linux.alibaba.com
>>> 
>>> Thanks! Took me some time to figure it out.
>> 
>> FYI, I'm planning to post an alternate version of that fix, hopefully today if
>> all goes well with my testing.
> 
> I assume you'll redo this two-patch series to apply on top of this
> forthcoming patch?
> 

Yes, will wait until the old one in -next has been replaced by a revised one. Thanks!