Messages in this thread | | | Date | Wed, 15 Apr 2020 14:44:26 -0700 | From | Andrew Morton <> | Subject | Re: [PATCHv3, RESEND 6/8] khugepaged: Allow to collapse PTE-mapped compound pages |
| |
On Mon, 13 Apr 2020 15:52:18 +0300 "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> wrote:
> We can collapse PTE-mapped compound pages. We only need to avoid > handling them more than once: lock/unlock page only once if it's present > in the PMD range multiple times as it handled on compound level. The > same goes for LRU isolation and putback. > > ... > > --- a/mm/khugepaged.c > +++ b/mm/khugepaged.c > @@ -515,17 +515,30 @@ void __khugepaged_exit(struct mm_struct *mm) > > static void release_pte_page(struct page *page) > { > - dec_node_page_state(page, NR_ISOLATED_ANON + page_is_file_cache(page));
I have
dec_node_page_state(page, NR_ISOLATED_ANON + page_is_file_lru(page));
here. Is there some prerequisite which I wasn't able to find?
| |