Re: [PATCH 01/15] cdrom: Remove now superfluous sentinel element from ctl_table array

Greg Kroah-Hartman
2023-09-28T13:37:06Z

On Thu, Sep 28, 2023 at 03:21:26PM +0200, Joel Granados via B4 Relay wrote:
> From: Joel Granados <j.granados@samsung.com>
>
> This commit comes at the tail end of a greater effort to remove the
> empty elements at the end of the ctl_table arrays (sentinels) which
> will reduce the overall build time size of the kernel and run time
> memory bloat by ~64 bytes per sentinel (further information Link :
> https://lore.kernel.org/all/ZO5Yx5JFogGi%2FcBo@bombadil.infradead.org/)
>
> Remove sentinel element from cdrom_table
>
> Signed-off-by: Joel Granados <j.granados@samsung.com>
> ---
> drivers/cdrom/cdrom.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c
> index cc2839805983..451907ade389 100644
> --- a/drivers/cdrom/cdrom.c
> +++ b/drivers/cdrom/cdrom.c
> @@ -3654,8 +3654,7 @@ static struct ctl_table cdrom_table[] = {
> .maxlen = sizeof(int),
> .mode = 0644,
> .proc_handler = cdrom_sysctl_handler
> - },
> - { }
> + }

You should have the final entry as "}," so as to make any future
additions to the list to only contain that entry, that's long been the
kernel style for lists like this.

So your patches will just remove one line, not 2 and add 1, making it a
smaller diff.

thanks,

greg k-h