On 12.11.24 16:28, wang wei wrote:
Signed-off-by: wang wei <a929244872@xxxxxxx> ---diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 80fef38d9d64..365c73be0bb4 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -310,6 +310,7 @@ typedef struct { * @_hugetlb_cgroup: Do not use directly, use accessor in hugetlb_cgroup.h. * @_hugetlb_cgroup_rsvd: Do not use directly, use accessor in hugetlb_cgroup.h. * @_hugetlb_hwpoison: Do not use directly, call raw_hwp_list_head(). + * @_hugetlb_list: To be used in hugetlb core code only. * @_deferred_list: Folios to be split under memory pressure. * @_unused_slab_obj_exts: Placeholder to match obj_exts in struct slab. * @@ -397,6 +398,17 @@ struct folio { }; struct page __page_2; }; + union { + struct { + unsigned long _flags_3; + unsigned long _head_3; + /* public: */ + struct list_head _hugetlb_list; + /* private: the union with struct page is transitional */ + }; + struct page __page_3; + }; + };As far as I know, increasing the size of folio maybe decrease the revenue of HVO, do you measure it?
We should always have a writable page2, even with HVO. So nothing should change at this point. Thanks!
-- Cheers, David / dhildenb
