Re: [PATCH] KEXEC: Get rid of duplicate check for hole_end

[ebiederm@xmission.com (Eric W. Biederman)]

Zhang Yanfei <zhangyanfei@cn.fujitsu.com> writes:

> hole_end has been checked to make sure it is <= crash_res.end in the
> while condition check, so the if condition check is duplicate.

That test is definitely a duplicate.

Reviewed-by: "Eric W. Biederman" <ebiederm@xmission.com>

> Signed-off-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
> ---
>  kernel/kexec.c |    2 --
>  1 files changed, 0 insertions(+), 2 deletions(-)
>
> diff --git a/kernel/kexec.c b/kernel/kexec.c
> index 5e4bd78..c2826fc 100644
> --- a/kernel/kexec.c
> +++ b/kernel/kexec.c
> @@ -497,8 +497,6 @@ static struct page *kimage_alloc_crash_control_pages(struct kimage *image,
>  
>  		if (hole_end > KEXEC_CRASH_CONTROL_MEMORY_LIMIT)
>  			break;
> -		if (hole_end > crashk_res.end)
> -			break;
>  		/* See if I overlap any of the segments */
>  		for (i = 0; i < image->nr_segments; i++) {
>  			unsigned long mstart, mend;