PG_dcache_clean is used in asm/hugetlb.h but defined in asm/cacheflush.h: builds rely on an accident of that being included via linux/mempolicy.h, but better include it directly (like arch/sh/include/asm/hugetlb.h does). Signed-off-by: Hugh Dickins <hughd@xxxxxxxxxx> --- arch/riscv/include/asm/hugetlb.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/riscv/include/asm/hugetlb.h b/arch/riscv/include/asm/hugetlb.h index ce1ebda1a49a..34e24f078cc1 100644 --- a/arch/riscv/include/asm/hugetlb.h +++ b/arch/riscv/include/asm/hugetlb.h @@ -2,6 +2,7 @@ #ifndef _ASM_RISCV_HUGETLB_H #define _ASM_RISCV_HUGETLB_H +#include <asm/cacheflush.h> #include <asm/page.h> static inline void arch_clear_hugepage_flags(struct page *page) -- 2.35.3