Currently is_huge_zero_pmd() only exists when CONFIG_TRANSPARENT_HUGEPAGE=y. This patch defines the function for the !CONFIG_TRANSPARENT_HUGEPAGE case. Signed-off-by: Yu Zhao <yuzhao@xxxxxxxxxx> --- include/linux/huge_mm.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index ba973efcd369..0ba7b3f9029c 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -443,6 +443,11 @@ static inline bool is_huge_zero_page(struct page *page) return false; } +static inline bool is_huge_zero_pmd(pmd_t pmd) +{ + return false; +} + static inline bool is_huge_zero_pud(pud_t pud) { return false; -- 2.31.0.rc2.261.g7f71774620-goog