On 10.03.20 12:59, Michal Hocko wrote:
> On Tue 10-03-20 12:46:05, David Hildenbrand wrote:
>> On 10.03.20 12:43, Michal Hocko wrote:
>>> On Mon 02-03-20 14:49:37, David Hildenbrand wrote:
>>> [...]
+static void virtio_mem_notify_going_offline(struct virtio_mem *vm,
+
On Tue 10-03-20 12:46:05, David Hildenbrand wrote:
> On 10.03.20 12:43, Michal Hocko wrote:
> > On Mon 02-03-20 14:49:37, David Hildenbrand wrote:
> > [...]
> >> +static void virtio_mem_notify_going_offline(struct virtio_mem *vm,
> >> + unsigned long mb_id)
>
On 10.03.20 12:43, Michal Hocko wrote:
> On Mon 02-03-20 14:49:37, David Hildenbrand wrote:
> [...]
>> +static void virtio_mem_notify_going_offline(struct virtio_mem *vm,
>> +unsigned long mb_id)
>> +{
>> +const unsigned long nr_pages =
On Mon 02-03-20 14:49:37, David Hildenbrand wrote:
[...]
> +static void virtio_mem_notify_going_offline(struct virtio_mem *vm,
> + unsigned long mb_id)
> +{
> + const unsigned long nr_pages = PFN_DOWN(vm->subblock_size);
> + unsigned long pfn;
> +
Dropping the reference count of PageOffline() pages allows offlining
code to skip them. However, we also have to convert PG_reserved to
another flag - let's use PG_dirty - so has_unmovable_pages() will
properly handle them. PG_reserved pages get detected as unmovable right
away.
We need the flag
