Re: [PATCH v3 2/2] kexec: Use min_t to simplify logic

Joe Perches
2013-02-26T08:38:08Z

On Tue, 2013-02-26 at 13:30 +0800, Zhang Yanfei wrote:
> This is just a tweak: using min_t to simplify logic of variable
> assignments.
>
> v3:
> - cast type of (PAGE_SIZE - (maddr & ~PAGE_MASK)) into size_t.

Why? Isn't this just a redundant cast?

> diff --git a/kernel/kexec.c b/kernel/kexec.c
[]
> @@ -822,13 +822,9 @@ static int kimage_load_normal_segment(struct kimage *image,
[]
> + mchunk = min_t(size_t, mbytes,
> + (size_t)(PAGE_SIZE - (maddr & ~PAGE_MASK)));

#define min_t(type, x, y) ({ \
type __min1 = (x); \
type __min2 = (y); \
__min1 < __min2 ? __min1: __min2; })