After commit ba72b4c8cf60 ("mm/sparsemem: support sub-section hotplug"),
when a mem section is fully deactivated, section_mem_map still records the
section's start pfn, which is not used any more and will be reassigned
during re-added.
In analogy with alloc/free pattern, it is better to clear all
On Mon 20-01-20 10:33:14, Pingfan Liu wrote:
> After commit ba72b4c8cf60 ("mm/sparsemem: support sub-section hotplug"),
> when a mem section is fully deactivated, section_mem_map still records the
> section's start pfn, which is not used any more and will be reassigned
> during re-added.
>
> In an
On 20.01.20 08:29, Michal Hocko wrote:
> On Mon 20-01-20 10:33:14, Pingfan Liu wrote:
>> After commit ba72b4c8cf60 ("mm/sparsemem: support sub-section hotplug"),
>> when a mem section is fully deactivated, section_mem_map still records the
>> section's start pfn, which is not used any more and will
On Mon, Jan 20, 2020 at 5:03 PM David Hildenbrand wrote:
>
[...]
> I think you dropped my
>
> Acked-by: David Hildenbrand
>
Sorry to forget it.
Thanks for your kind review.
Regards,
Pingfan
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On Mon, 20 Jan 2020 08:29:39 +0100 Michal Hocko wrote:
> On Mon 20-01-20 10:33:14, Pingfan Liu wrote:
> > After commit ba72b4c8cf60 ("mm/sparsemem: support sub-section hotplug"),
> > when a mem section is fully deactivated, section_mem_map still records the
> > section's start pfn, which is not u
On Thu 23-01-20 19:10:47, Andrew Morton wrote:
> On Mon, 20 Jan 2020 08:29:39 +0100 Michal Hocko wrote:
>
> > On Mon 20-01-20 10:33:14, Pingfan Liu wrote:
> > > After commit ba72b4c8cf60 ("mm/sparsemem: support sub-section hotplug"),
> > > when a mem section is fully deactivated, section_mem_map
On Fri, Jan 24, 2020 at 2:49 PM Michal Hocko wrote:
>
> On Thu 23-01-20 19:10:47, Andrew Morton wrote:
> > On Mon, 20 Jan 2020 08:29:39 +0100 Michal Hocko wrote:
> >
> > > On Mon 20-01-20 10:33:14, Pingfan Liu wrote:
> > > > After commit ba72b4c8cf60 ("mm/sparsemem: support sub-section hotplug"),
