From 75db00eea03d5b892c4e69ab17891fca968187d3 Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Thu, 21 Dec 2017 13:51:46 +0900 Subject: [PATCH] linux/kernel.h: Add ALIGN_DOWN macro Follow Linux commit ed067d4a859f ("linux/kernel.h: Add ALIGN_DOWN macro"). Signed-off-by: Masahiro Yamada --- include/linux/kernel.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 87d2d9554d..04a09eb4f6 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -38,6 +38,7 @@ #define REPEAT_BYTE(x) ((~0ul / 0xff) * (x)) #define ALIGN(x,a) __ALIGN_MASK((x),(typeof(x))(a)-1) +#define ALIGN_DOWN(x, a) ALIGN((x) - ((a) - 1), (a)) #define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask)) #define PTR_ALIGN(p, a) ((typeof(p))ALIGN((unsigned long)(p), (a))) #define IS_ALIGNED(x, a) (((x) & ((typeof(x))(a) - 1)) == 0) -- 2.39.5