Displaying 9 results from an estimated 9 matches for "unisol".
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unison
2019 Oct 22
2
[PATCH RFC v3 6/9] mm: Allow to offline PageOffline() pages with a reference count of 0
...gt; Especially if we have pages with PG_offline + refcount >= 1 .
You should have your reference count 0 at this stage as it is after
MEM_GOING_OFFLINE.
> > MEM_CANCEL_OFFLINE could gain the reference back to balance the
> > MEM_GOING_OFFLINE step.
>
> The pages are already unisolated and could be used by the buddy. But again,
> I think you have an idea that tries to avoid putting pages to the buddy.
Yeah, set_page_count(page, 0) if you do not want to release that page
from the notifier context to reflect that the page is ok to be offlined
with the rest.
[...]
> &g...
2019 Oct 22
2
[PATCH RFC v3 6/9] mm: Allow to offline PageOffline() pages with a reference count of 0
...gt; Especially if we have pages with PG_offline + refcount >= 1 .
You should have your reference count 0 at this stage as it is after
MEM_GOING_OFFLINE.
> > MEM_CANCEL_OFFLINE could gain the reference back to balance the
> > MEM_GOING_OFFLINE step.
>
> The pages are already unisolated and could be used by the buddy. But again,
> I think you have an idea that tries to avoid putting pages to the buddy.
Yeah, set_page_count(page, 0) if you do not want to release that page
from the notifier context to reflect that the page is ok to be offlined
with the rest.
[...]
> &g...
2019 Oct 22
0
[PATCH RFC v3 6/9] mm: Allow to offline PageOffline() pages with a reference count of 0
...th PG_offline + refcount >= 1 .
>
> You should have your reference count 0 at this stage as it is after
> MEM_GOING_OFFLINE.
>
>>> MEM_CANCEL_OFFLINE could gain the reference back to balance the
>>> MEM_GOING_OFFLINE step.
>>
>> The pages are already unisolated and could be used by the buddy. But again,
>> I think you have an idea that tries to avoid putting pages to the buddy.
>
> Yeah, set_page_count(page, 0) if you do not want to release that page
> from the notifier context to reflect that the page is ok to be offlined
> with th...
2019 Oct 18
2
[PATCH RFC v3 6/9] mm: Allow to offline PageOffline() pages with a reference count of 0
On Fri 18-10-19 10:50:24, David Hildenbrand wrote:
> On 18.10.19 10:15, Michal Hocko wrote:
> > On Wed 16-10-19 16:14:52, David Hildenbrand wrote:
> > > On 16.10.19 16:03, Michal Hocko wrote:
> > [...]
> > > > But why cannot you keep the reference count at 1 (do get_page when
> > > > offlining the page)? In other words as long as the driver knows the
2019 Oct 18
2
[PATCH RFC v3 6/9] mm: Allow to offline PageOffline() pages with a reference count of 0
On Fri 18-10-19 10:50:24, David Hildenbrand wrote:
> On 18.10.19 10:15, Michal Hocko wrote:
> > On Wed 16-10-19 16:14:52, David Hildenbrand wrote:
> > > On 16.10.19 16:03, Michal Hocko wrote:
> > [...]
> > > > But why cannot you keep the reference count at 1 (do get_page when
> > > > offlining the page)? In other words as long as the driver knows the
2019 Oct 23
2
[PATCH RFC v3 6/9] mm: Allow to offline PageOffline() pages with a reference count of 0
On Tue 22-10-19 16:02:09, David Hildenbrand wrote:
[...]
> >>> MEM_CANCEL_OFFLINE could gain the reference back to balance the
> >>> MEM_GOING_OFFLINE step.
> >>
> >> The pages are already unisolated and could be used by the buddy. But again,
> >> I think you have an idea that tries to avoid putting pages to the buddy.
> >
> > Yeah, set_page_count(page, 0) if you do not want to release that page
> > from the notifier context to reflect that the page is ok to be o...
2019 Oct 23
2
[PATCH RFC v3 6/9] mm: Allow to offline PageOffline() pages with a reference count of 0
On Tue 22-10-19 16:02:09, David Hildenbrand wrote:
[...]
> >>> MEM_CANCEL_OFFLINE could gain the reference back to balance the
> >>> MEM_GOING_OFFLINE step.
> >>
> >> The pages are already unisolated and could be used by the buddy. But again,
> >> I think you have an idea that tries to avoid putting pages to the buddy.
> >
> > Yeah, set_page_count(page, 0) if you do not want to release that page
> > from the notifier context to reflect that the page is ok to be o...
2019 Oct 18
0
[PATCH RFC v3 6/9] mm: Allow to offline PageOffline() pages with a reference count of 0
..., how to make offlining work without putting pages back to
the buddy, etc .). I have the feeling I am missing the one part that
does not put the pages back to the buddy.
>
> MEM_CANCEL_OFFLINE could gain the reference back to balance the
> MEM_GOING_OFFLINE step.
The pages are already unisolated and could be used by the buddy. But
again, I think you have an idea that tries to avoid putting pages to the
buddy.
>
> One think that I would like to clarify because my previous email could
> be misleading a bit. You do not really have to drop the reference by
> releasing the p...
2019 Oct 23
0
[PATCH RFC v3 6/9] mm: Allow to offline PageOffline() pages with a reference count of 0
On 23.10.19 11:43, Michal Hocko wrote:
> On Tue 22-10-19 16:02:09, David Hildenbrand wrote:
> [...]
>>>>> MEM_CANCEL_OFFLINE could gain the reference back to balance the
>>>>> MEM_GOING_OFFLINE step.
>>>>
>>>> The pages are already unisolated and could be used by the buddy. But again,
>>>> I think you have an idea that tries to avoid putting pages to the buddy.
>>>
>>> Yeah, set_page_count(page, 0) if you do not want to release that page
>>> from the notifier context to reflect that the page is...