On Fri, Nov 16, 2018 at 11:24:05AM +0100, Michal Hocko wrote:
>On Thu 15-11-18 07:50:40, Wei Yang wrote:
>[...]
>> @@ -1193,8 +1196,8 @@ static unsigned int count_free_highmem_pages(void)
>> struct zone *zone;
>> unsigned int cnt = 0;
>>
>> -for_each_populated_zone(zone)
>> -
On Fri 16-11-18 15:58:28, Wei Yang wrote:
> On Fri, Nov 16, 2018 at 12:26:03PM +0100, Michal Hocko wrote:
> >On Fri 16-11-18 12:05:04, osalvador wrote:
> >> On Fri, 2018-11-16 at 10:57 +0100, Michal Hocko wrote:
> >[...]
> >> > E.g. memory hotplug decreases both managed and present counters. I
> >>
On Fri, Nov 16, 2018 at 12:26:03PM +0100, Michal Hocko wrote:
>On Fri 16-11-18 12:05:04, osalvador wrote:
>> On Fri, 2018-11-16 at 10:57 +0100, Michal Hocko wrote:
>[...]
>> > E.g. memory hotplug decreases both managed and present counters. I
>> > am actually not sure that is 100% correct (put on m
On Fri 16-11-18 12:05:04, osalvador wrote:
> On Fri, 2018-11-16 at 10:57 +0100, Michal Hocko wrote:
[...]
> > E.g. memory hotplug decreases both managed and present counters. I
> > am actually not sure that is 100% correct (put on my TODO list to
> > check). There is no consistency in that regards.
On Fri, 2018-11-16 at 10:57 +0100, Michal Hocko wrote:
> On Thu 15-11-18 13:37:35, Andrew Morton wrote:
> [...]
> > Worse, the situations in which managed_zone() != populated_zone()
> > are
> > rare(?), so it will take a long time for problems to be discovered,
> > I
> > expect.
>
> We would basic
On Thu 15-11-18 07:50:40, Wei Yang wrote:
[...]
> @@ -1193,8 +1196,8 @@ static unsigned int count_free_highmem_pages(void)
> struct zone *zone;
> unsigned int cnt = 0;
>
> - for_each_populated_zone(zone)
> - if (is_highmem(zone))
> + for_each_zone(zone)
> +
On Thu 15-11-18 13:37:35, Andrew Morton wrote:
[...]
> Worse, the situations in which managed_zone() != populated_zone() are
> rare(?), so it will take a long time for problems to be discovered, I
> expect.
We would basically have to deplete the whole zone by the bootmem
allocator or pull out all
On Thu, Nov 15, 2018 at 01:37:35PM -0800, Andrew Morton wrote:
>On Thu, 15 Nov 2018 07:50:40 +0800 Wei Yang wrote:
>
>> For one zone, there are three digits to describe its space range:
>>
>> spanned_pages
>> present_pages
>> managed_pages
>>
>> The detailed meaning is written in inc
On Thu, 15 Nov 2018 07:50:40 +0800 Wei Yang wrote:
> For one zone, there are three digits to describe its space range:
>
> spanned_pages
> present_pages
> managed_pages
>
> The detailed meaning is written in include/linux/mmzone.h. This patch
> concerns about the last two.
>
>
For one zone, there are three digits to describe its space range:
spanned_pages
present_pages
managed_pages
The detailed meaning is written in include/linux/mmzone.h. This patch
concerns about the last two.
present_pages is physical pages existing within the zone
managed_page
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