On Fri 13-10-17 22:42:46, Michael Ellerman wrote:
> Vlastimil Babka writes:
> > On 10/11/2017 08:51 AM, Michal Hocko wrote:
> >> On Wed 11-10-17 13:37:50, Michael Ellerman wrote:
> >>> Michal Hocko writes:
> On Tue 10-10-17 23:05:08, Michael Ellerman wrote:
> > Michal Hocko writes:
> >>
Vlastimil Babka writes:
> On 10/11/2017 08:51 AM, Michal Hocko wrote:
>> On Wed 11-10-17 13:37:50, Michael Ellerman wrote:
>>> Michal Hocko writes:
On Tue 10-10-17 23:05:08, Michael Ellerman wrote:
> Michal Hocko writes:
>> From: Michal Hocko
>>
>> Memory offlining can fail
On Wed 11-10-17 19:35:04, Anshuman Khandual wrote:
[...]
> > $ grep __init_begin /proc/kallsyms
> > c0d7 T __init_begin
> > $ ./page-types -r -a 0x0,0xd7
> >flagspage-count MB symbolic-flags
> > long-symbolic-flags
> > 0x00
On 10/11/2017 10:49 AM, Michael Ellerman wrote:
> Michael Ellerman writes:
>> Michal Hocko writes:
>>> On Tue 10-10-17 23:05:08, Michael Ellerman wrote:
Michal Hocko writes:
> From: Michal Hocko
> Memory offlining can fail just too eagerly under a heavy memory pressure.
>
>
On Wed 11-10-17 13:17:13, Vlastimil Babka wrote:
> On 10/11/2017 10:13 AM, Michal Hocko wrote:
> > On Wed 11-10-17 10:04:39, Vlastimil Babka wrote:
> >> On 10/11/2017 08:51 AM, Michal Hocko wrote:
> > [...]
> >>> This is really strange! As you write in other email the page is
> >>> reserved. That m
On 10/11/2017 10:13 AM, Michal Hocko wrote:
> On Wed 11-10-17 10:04:39, Vlastimil Babka wrote:
>> On 10/11/2017 08:51 AM, Michal Hocko wrote:
> [...]
>>> This is really strange! As you write in other email the page is
>>> reserved. That means that some of the earlier checks
>>> if (zone_idx(zo
On Wed 11-10-17 10:04:39, Vlastimil Babka wrote:
> On 10/11/2017 08:51 AM, Michal Hocko wrote:
[...]
> > This is really strange! As you write in other email the page is
> > reserved. That means that some of the earlier checks
> > if (zone_idx(zone) == ZONE_MOVABLE)
> > return false
On 10/11/2017 08:51 AM, Michal Hocko wrote:
> On Wed 11-10-17 13:37:50, Michael Ellerman wrote:
>> Michal Hocko writes:
>>
>>> On Tue 10-10-17 23:05:08, Michael Ellerman wrote:
Michal Hocko writes:
> From: Michal Hocko
>
> Memory offlining can fail just too eagerly under a
On Wed 11-10-17 13:37:50, Michael Ellerman wrote:
> Michal Hocko writes:
>
> > On Tue 10-10-17 23:05:08, Michael Ellerman wrote:
> >> Michal Hocko writes:
> >>
> >> > From: Michal Hocko
> >> >
> >> > Memory offlining can fail just too eagerly under a heavy memory pressure.
> >> >
> >> > [ 5410
Michael Ellerman writes:
> Michal Hocko writes:
>> On Tue 10-10-17 23:05:08, Michael Ellerman wrote:
>>> Michal Hocko writes:
>>> > From: Michal Hocko
>>> > Memory offlining can fail just too eagerly under a heavy memory pressure.
>>> >
>>> > [ 5410.336792] page:ea22a646bd00 count:255 mapco
Michal Hocko writes:
> On Tue 10-10-17 23:05:08, Michael Ellerman wrote:
>> Michal Hocko writes:
>>
>> > From: Michal Hocko
>> >
>> > Memory offlining can fail just too eagerly under a heavy memory pressure.
>> >
>> > [ 5410.336792] page:ea22a646bd00 count:255 mapcount:252
>> > mapping:ff
On Tue 10-10-17 23:05:08, Michael Ellerman wrote:
> Michal Hocko writes:
>
> > From: Michal Hocko
> >
> > Memory offlining can fail just too eagerly under a heavy memory pressure.
> >
> > [ 5410.336792] page:ea22a646bd00 count:255 mapcount:252
> > mapping:88ff926c9f38 index:0x3
> > [ 54
Michal Hocko writes:
> From: Michal Hocko
>
> Memory offlining can fail just too eagerly under a heavy memory pressure.
>
> [ 5410.336792] page:ea22a646bd00 count:255 mapcount:252
> mapping:88ff926c9f38 index:0x3
> [ 5410.336809] flags: 0x9855fe40010048(uptodate|active|mappedtodisk)
> [
From: Michal Hocko
Memory offlining can fail just too eagerly under a heavy memory pressure.
[ 5410.336792] page:ea22a646bd00 count:255 mapcount:252
mapping:88ff926c9f38 index:0x3
[ 5410.336809] flags: 0x9855fe40010048(uptodate|active|mappedtodisk)
[ 5410.336811] page dumped because: is
you think about the following wording:
> >
> > Ups, wrong patch
> >
> >
> > From 8639496a834b4a7c24972ec23b17e50f0d6a304c Mon Sep 17 00:00:00 2001
> > From: Michal Hocko
> > Date: Mon, 14 Aug 2017 10:46:12 +0200
> > Subject: [PATCH 1/2] mm, memory_
t; From 8639496a834b4a7c24972ec23b17e50f0d6a304c Mon Sep 17 00:00:00 2001
> From: Michal Hocko
> Date: Mon, 14 Aug 2017 10:46:12 +0200
> Subject: [PATCH 1/2] mm, memory_hotplug: do not fail offlining too early
>
> Memory offlining can fail just too eagerly under a heavy memo
think that the changelog should be more clear about this?
> >
> > It certainly wouldn't hurt :)
>
> So what do you think about the following wording:
Ups, wrong patch
>From 8639496a834b4a7c24972ec23b17e50f0d6a304c Mon Sep 17 00:00:00 2001
From: Michal Hocko
Date:
On Wed 13-09-17 13:41:20, Vlastimil Babka wrote:
> On 09/11/2017 10:17 AM, Michal Hocko wrote:
[...]
> > Yes, we should be able to distinguish the two and hopefully we can teach
> > the migration code to distinguish between EBUSY (likely permanent) and
> > EGAIN (temporal) failure. This sound like
On 09/11/2017 10:17 AM, Michal Hocko wrote:
> On Fri 08-09-17 19:26:06, Vlastimil Babka wrote:
>> On 09/04/2017 10:21 AM, Michal Hocko wrote:
>>> From: Michal Hocko
>>>
>>> Fix this by removing the max retry count and only rely on the timeout
>>> resp. interruption by a signal from the userspace.
On Fri 08-09-17 19:26:06, Vlastimil Babka wrote:
> On 09/04/2017 10:21 AM, Michal Hocko wrote:
> > From: Michal Hocko
> >
> > Memory offlining can fail just too eagerly under a heavy memory pressure.
> >
> > [ 5410.336792] page:ea22a646bd00 count:255 mapcount:252
> > mapping:88ff926c9f3
On 09/04/2017 10:21 AM, Michal Hocko wrote:
> From: Michal Hocko
>
> Memory offlining can fail just too eagerly under a heavy memory pressure.
>
> [ 5410.336792] page:ea22a646bd00 count:255 mapcount:252
> mapping:88ff926c9f38 index:0x3
> [ 5410.336809] flags: 0x9855fe40010048(uptodate|a
On Tue 05-09-17 11:59:36, Anshuman Khandual wrote:
[...]
> > @@ -1634,43 +1634,25 @@ static int __ref __offline_pages(unsigned long
> > start_pfn,
> >
> > pfn = start_pfn;
> > expire = jiffies + timeout;
> > - drain = 0;
> > - retry_max = 5;
> > repeat:
> > /* start memory hot r
On 09/04/2017 01:51 PM, Michal Hocko wrote:
> From: Michal Hocko
>
> Memory offlining can fail just too eagerly under a heavy memory pressure.
>
> [ 5410.336792] page:ea22a646bd00 count:255 mapcount:252
> mapping:88ff926c9f38 index:0x3
> [ 5410.336809] flags: 0x9855fe40010048(uptodate|a
From: Michal Hocko
Memory offlining can fail just too eagerly under a heavy memory pressure.
[ 5410.336792] page:ea22a646bd00 count:255 mapcount:252
mapping:88ff926c9f38 index:0x3
[ 5410.336809] flags: 0x9855fe40010048(uptodate|active|mappedtodisk)
[ 5410.336811] page dumped because: is
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