On Tue, Sep 26, 2023 at 10:33:40AM +0800, Yajun Deng wrote: > When we init a single page, we need to mark this page reserved if it > does. And some pages may not need to set page count, such as compound > pages. > > Introduce enum init_page_flags, the caller init page count and mark page > reserved by passing INIT_PAGE_COUNT and INIT_PAGE_RESERVED. > > Signed-off-by: Yajun Deng <yajun.deng@xxxxxxxxx> > --- > v3: Introduce enum init_page_flags. > v2: Introduce INIT_PAGE_COUNT and INIT_PAGE_RESERVED. > v1: https://lore.kernel.org/all/20230922070923.355656-1-yajun.deng@xxxxxxxxx/ > --- > mm/hugetlb.c | 2 +- > mm/internal.h | 8 +++++++- > mm/mm_init.c | 31 +++++++++++++++++-------------- > 3 files changed, 25 insertions(+), 16 deletions(-) > > diff --git a/mm/mm_init.c b/mm/mm_init.c > index 06a72c223bce..07fe7e489769 100644 > --- a/mm/mm_init.c > +++ b/mm/mm_init.c > @@ -1041,7 +1043,7 @@ static void __ref memmap_init_compound(struct page *head, > for (pfn = head_pfn + 1; pfn < end_pfn; pfn++) { > struct page *page = pfn_to_page(pfn); > > - __init_zone_device_page(page, pfn, zone_idx, nid, pgmap); > + __init_zone_device_page(page, pfn, zone_idx, nid, pgmap, 0); I think the first patch should not contain any functional changes, but only add the flags parameter to __init_single_page(). > prep_compound_tail(head, pfn - head_pfn); > set_page_count(page, 0); > -- Sincerely yours, Mike.
