kernel: add roundup() code comment from akpm



Add roundup() code comment from akpm.

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: James Morris <jmorris@namei.org>

parent f6614b7b

include/linux/kernel.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -58,6 +58,8 @@ extern const char linux_proc_banner[];

		#define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))
		#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))

		/* The `const' in roundup() prevents gcc-3.3 from calling __divdi3 */
		#define roundup(x, y) ( \
		{ \
		const typeof(y) __y = y; \