Re: [PATCH v1 11/11] mm: memory_hotplug: memory hotremove supports thp migration

Naoya Horiguchi
2016-03-03T08:42:23Z

On Thu, Mar 03, 2016 at 04:41:58PM +0900, Naoya Horiguchi wrote:
> This patch enables thp migration for memory hotremove. Stub definition of
> prep_transhuge_page() is added for CONFIG_TRANSPARENT_HUGEPAGE=n.
>
> Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
> ---
> include/linux/huge_mm.h | 3 +++
> mm/memory_hotplug.c | 8 ++++++++
> mm/page_isolation.c | 8 ++++++++
> 3 files changed, 19 insertions(+)
>
> diff --git v4.5-rc5-mmotm-2016-02-24-16-18/include/linux/huge_mm.h v4.5-rc5-mmotm-2016-02-24-16-18_patched/include/linux/huge_mm.h
> index 09b215d..7944346 100644
> --- v4.5-rc5-mmotm-2016-02-24-16-18/include/linux/huge_mm.h
> +++ v4.5-rc5-mmotm-2016-02-24-16-18_patched/include/linux/huge_mm.h
> @@ -175,6 +175,9 @@ static inline bool thp_migration_supported(void)
> #define transparent_hugepage_enabled(__vma) 0
>
> #define transparent_hugepage_flags 0UL
> +static inline void prep_transhuge_page(struct page *page)
> +{
> +}
> static inline int
> split_huge_page_to_list(struct page *page, struct list_head *list)
> {

According to the warnings from kbuild bot, this chunk should come with
patch 8/11 or earlier. I'll fix this.

Thanks,
Naoya Horiguchi