Re: [PATCHv2] mm/gup: speed up check_and_migrate_cma_pages() on huge page

On Mon, Jun 24, 2019 at 01:34:01PM +0800, Pingfan Liu wrote: > On Mon, Jun 24, 2019 at 1:32 PM Pingfan Liu wrote: > > > > On Mon, Jun 24, 2019 at 12:43 PM Ira Weiny wrote: > > > > > > On Mon, Jun 24, 2019 at 12:12:41PM +0800, Pingfan Liu wrote: > > > > Both hugetlb and thp locate on the same migr

Re: [PATCHv2] mm/gup: speed up check_and_migrate_cma_pages() on huge page

On Mon, Jun 24, 2019 at 1:32 PM Pingfan Liu wrote: > > On Mon, Jun 24, 2019 at 12:43 PM Ira Weiny wrote: > > > > On Mon, Jun 24, 2019 at 12:12:41PM +0800, Pingfan Liu wrote: > > > Both hugetlb and thp locate on the same migration type of pageblock, since > > > they are allocated from a free_list[

Re: [PATCHv2] mm/gup: speed up check_and_migrate_cma_pages() on huge page

On Mon, Jun 24, 2019 at 12:43 PM Ira Weiny wrote: > > On Mon, Jun 24, 2019 at 12:12:41PM +0800, Pingfan Liu wrote: > > Both hugetlb and thp locate on the same migration type of pageblock, since > > they are allocated from a free_list[]. Based on this fact, it is enough to > > check on a single sub

Re: [PATCHv2] mm/gup: speed up check_and_migrate_cma_pages() on huge page

On Mon, Jun 24, 2019 at 12:12:41PM +0800, Pingfan Liu wrote: > Both hugetlb and thp locate on the same migration type of pageblock, since > they are allocated from a free_list[]. Based on this fact, it is enough to > check on a single subpage to decide the migration type of the whole huge > page. B