On Tue, Jan 14, 2014 at 04:35:33PM -0800, Andrew Morton wrote:
> > Would it be overkill to save the kernel default both with and without thp
> > and then doing a WARN_ON_ONCE() if a user-written value is ever less?
>
> Well, min_free_kbytes is a userspace thing, not a kernel thing - maybe
> THP s
On Tue, 14 Jan 2014, Andrew Morton wrote:
> I've been waiting 10+ years for us to decide to delete that warning due
> to the false positives. Hasn't happened yet, and the warning does
> find bugs/issues/misconfigurations/etc.
>
I've found memory leaks from the meminfo that is emitted as part of
On Tue, 14 Jan 2014 16:25:10 -0800 (PST) David Rientjes
wrote:
> On Tue, 14 Jan 2014, Andrew Morton wrote:
>
> > This is all a bit nasty, isn't it? THP goes and alters min_free_kbytes
> > to improve its own reliability, but min_free_kbytes is also
> > user-modifiable. And over many years we h
On Tue, 14 Jan 2014, Andrew Morton wrote:
> This is all a bit nasty, isn't it? THP goes and alters min_free_kbytes
> to improve its own reliability, but min_free_kbytes is also
> user-modifiable. And over many years we have trained a *lot* of users
> to alter min_free_kbytes. Often to prevent n
On Wed, 15 Jan 2014 04:07:20 +0800 Han Pingtian
wrote:
> min_free_kbytes may be raised during THP's initialization. Sometimes,
> this will change the value being set by user. Showing message will
> clarify this confusion.
>
> Only show this message when changing the value set by user according
On Fri, Jan 10, 2014 at 09:17:44AM +0100, Michal Hocko wrote:
> On Fri 10-01-14 00:13:44, Andrew Morton wrote:
> > On Fri, 10 Jan 2014 09:05:04 +0100 Michal Hocko wrote:
> >
> > > > > --- a/mm/huge_memory.c
> > > > > +++ b/mm/huge_memory.c
> > > > > @@ -100,6 +100,7 @@ static struct khugepaged_sc
On Fri, Jan 10, 2014 at 09:17:44AM +0100, Michal Hocko wrote:
> On Fri 10-01-14 00:13:44, Andrew Morton wrote:
> > On Fri, 10 Jan 2014 09:05:04 +0100 Michal Hocko wrote:
> >
> > > > > --- a/mm/huge_memory.c
> > > > > +++ b/mm/huge_memory.c
> > > > > @@ -100,6 +100,7 @@ static struct khugepaged_sc
On Fri 10-01-14 00:13:44, Andrew Morton wrote:
> On Fri, 10 Jan 2014 09:05:04 +0100 Michal Hocko wrote:
>
> > > > --- a/mm/huge_memory.c
> > > > +++ b/mm/huge_memory.c
> > > > @@ -100,6 +100,7 @@ static struct khugepaged_scan khugepaged_scan = {
> > > > .mm_head = LIST_HEAD_INIT(khugepage
On Fri, 10 Jan 2014 09:05:04 +0100 Michal Hocko wrote:
> > > --- a/mm/huge_memory.c
> > > +++ b/mm/huge_memory.c
> > > @@ -100,6 +100,7 @@ static struct khugepaged_scan khugepaged_scan = {
> > > .mm_head = LIST_HEAD_INIT(khugepaged_scan.mm_head),
> > > };
> > >
> > > +extern int user_min_fre
On Thu 09-01-14 13:15:54, David Rientjes wrote:
> On Thu, 9 Jan 2014, Han Pingtian wrote:
>
> > min_free_kbytes may be raised during THP's initialization. Sometimes,
> > this will change the value being set by user. Showing message will
> > clarify this confusion.
> >
> > Only show this message w
On Thu, 9 Jan 2014, Han Pingtian wrote:
> min_free_kbytes may be raised during THP's initialization. Sometimes,
> this will change the value being set by user. Showing message will
> clarify this confusion.
>
> Only show this message when changing the value set by user according to
> Michal Hocko
On Thu 09-01-14 15:32:59, Han Pingtian wrote:
[...]
> From b8db4f157a17d6d8652cc9cff024a192c3ee0779 Mon Sep 17 00:00:00 2001
> From: Han Pingtian
> Date: Thu, 9 Jan 2014 15:24:26 +0800
> Subject: [PATCH] mm: show message when raising min_free_kbytes in THP
>
> min_free_kbytes may be raised during
On Wed, Jan 08, 2014 at 11:16:11AM +0100, Michal Hocko wrote:
> On Wed 08-01-14 16:20:01, Han Pingtian wrote:
> > On Mon, Jan 06, 2014 at 05:46:04PM +0100, Michal Hocko wrote:
> > > On Sun 05-01-14 08:35:01, Han Pingtian wrote:
> > > [...]
> > > > From f4d085a880dfae7638b33c242554efb0afc0852b Mon S
On Wed 08-01-14 16:20:01, Han Pingtian wrote:
> On Mon, Jan 06, 2014 at 05:46:04PM +0100, Michal Hocko wrote:
> > On Sun 05-01-14 08:35:01, Han Pingtian wrote:
> > [...]
> > > From f4d085a880dfae7638b33c242554efb0afc0852b Mon Sep 17 00:00:00 2001
> > > From: Han Pingtian
> > > Date: Fri, 3 Jan 201
On Mon, Jan 06, 2014 at 05:46:04PM +0100, Michal Hocko wrote:
> On Sun 05-01-14 08:35:01, Han Pingtian wrote:
> [...]
> > From f4d085a880dfae7638b33c242554efb0afc0852b Mon Sep 17 00:00:00 2001
> > From: Han Pingtian
> > Date: Fri, 3 Jan 2014 11:10:49 +0800
> > Subject: [PATCH] mm: show message whe
On Mon, Jan 06, 2014 at 05:46:04PM +0100, Michal Hocko wrote:
> On Sun 05-01-14 08:35:01, Han Pingtian wrote:
> [...]
> > From f4d085a880dfae7638b33c242554efb0afc0852b Mon Sep 17 00:00:00 2001
> > From: Han Pingtian
> > Date: Fri, 3 Jan 2014 11:10:49 +0800
> > Subject: [PATCH] mm: show message whe
On Sun 05-01-14 08:35:01, Han Pingtian wrote:
[...]
> From f4d085a880dfae7638b33c242554efb0afc0852b Mon Sep 17 00:00:00 2001
> From: Han Pingtian
> Date: Fri, 3 Jan 2014 11:10:49 +0800
> Subject: [PATCH] mm: show message when raising min_free_kbytes in THP
>
> min_free_kbytes may be raised during
On Fri, Jan 03, 2014 at 10:17:54AM -0800, Dave Hansen wrote:
> On 01/02/2014 07:33 PM, Han Pingtian wrote:
> > @@ -130,8 +130,11 @@ static int set_recommended_min_free_kbytes(void)
> > (unsigned long) nr_free_buffer_pages() / 20);
> > recommended_min <<= (PAGE_SHIFT-10
On 01/02/2014 07:33 PM, Han Pingtian wrote:
> @@ -130,8 +130,11 @@ static int set_recommended_min_free_kbytes(void)
> (unsigned long) nr_free_buffer_pages() / 20);
> recommended_min <<= (PAGE_SHIFT-10);
>
> - if (recommended_min > min_free_kbytes)
> + if
On Thu, Jan 02, 2014 at 10:05:21AM -0800, Dave Hansen wrote:
> On 12/31/2013 04:29 PM, Han Pingtian wrote:
> > min_free_kbytes may be updated during thp's initialization. Sometimes,
> > this will change the value being set by user. Showing message will
> > clarify this confusion.
> ...
> > - if (
On 01/02/2014 03:36 PM, David Rientjes wrote:
> On Thu, 2 Jan 2014, Dave Hansen wrote:
>> Let's say enabling THP made my system behave badly. How do I get it
>> back to the state before I enabled THP? The user has to have gone and
>> recorded what their min_free_kbytes was before turning THP on i
On Thu, 2 Jan 2014, Dave Hansen wrote:
> > The default value of min_free_kbytes depends on the implementation of the
> > VM regardless of any config options that you may have enabled. We don't
> > specify what the non-thp default is in the kernel log, so why do we need
> > to specify what the
On 01/02/2014 01:58 PM, David Rientjes wrote:
> On Thu, 2 Jan 2014, Dave Hansen wrote:
>
>>> min_free_kbytes may be updated during thp's initialization. Sometimes,
>>> this will change the value being set by user. Showing message will
>>> clarify this confusion.
>> ...
>>> - if (recommended_min
On Thu, 2 Jan 2014, Dave Hansen wrote:
> > min_free_kbytes may be updated during thp's initialization. Sometimes,
> > this will change the value being set by user. Showing message will
> > clarify this confusion.
> ...
> > - if (recommended_min > min_free_kbytes)
> > + if (recommended_min > mi
On 12/31/2013 04:29 PM, Han Pingtian wrote:
> min_free_kbytes may be updated during thp's initialization. Sometimes,
> this will change the value being set by user. Showing message will
> clarify this confusion.
...
> - if (recommended_min > min_free_kbytes)
> + if (recommended_min > min_fr
min_free_kbytes may be updated during thp's initialization. Sometimes,
this will change the value being set by user. Showing message will
clarify this confusion.
Signed-off-by: Han Pingtian
---
mm/huge_memory.c |5 -
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/mm/huge_
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