Hi,this patch can less loop once in this situation:
base more than rbase and end less than rend.
Mike Rapoport <rppt@xxxxxxxxxx> 于2023年11月2日周四 16:54写道：
Hi,
> Subject: [PATCH] mm/memblock.c: using judgment statement can reduce loop and enhance readability.
I disagree.
On Thu, Nov 02, 2023 at 10:37:10AM +0800, huanglllzu@xxxxxxxxx wrote:
> From: Liangliang Huang <huangll@xxxxxxxxxx>
>
> Signed-off-by: Liangliang Huang <huangll@xxxxxxxxxx>
> ---
> mm/memblock.c | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/mm/memblock.c b/mm/memblock.c
> index 913b2520a9a0..e48dea7144bb 100644
> --- a/mm/memblock.c
> +++ b/mm/memblock.c
> @@ -655,7 +655,11 @@ static int __init_memblock memblock_add_range(struct memblock_type *type,
> }
> }
> /* area below @rend is dealt with, forget about it */
> - base = min(rend, end);
> + if (end < rend) {
> + base = end;
> + break;
> + } else
> + base = rend;
min() is perfectly clear and there no change in number of iterations of the
loop.
> }
>
> /* insert the remaining portion */
> --
> 2.25.1
>
--
Sincerely yours,
Mike.
