Re: [PATCH -next v7 2/4] mm/zswap: skip invalid or unchanged parameter

Sergey Senozhatsky
2023-03-26T03:19:28Z

On (23/03/25 15:14), Liu Shixin wrote:
> static int zswap_enabled_param_set(const char *val,
> const struct kernel_param *kp)
> {
> + bool res;
> +
> + if (kstrtobool(val, &res))
> + return -EINVAL;
> +
> + /* no change required */
> + if (res == *(bool *)kp->arg)
> + return 0;

Bool kernel param can be any of these letters 'YyTt1NnFf0'. Doing things
to kp->arg outside of kernel/params.c is not going to be easy, let's not
even try.