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SubjectRe: [PATCH 1/2] device.h: pack struct dev_links_info
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On 2/26/2019 3:41 PM, Greg Kroah-Hartman wrote:
> The dev_links_info structure has 4 bytes of padding at the end of it
> when embedded in struct device (which is the only place it lives). To
> help reduce the size of struct device pack this structure so we can take
> advantage of the hole with later structure reorganizations.
>
> Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

> ---
> include/linux/device.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/include/linux/device.h b/include/linux/device.h
> index 6cb4640b6160..b63165276a09 100644
> --- a/include/linux/device.h
> +++ b/include/linux/device.h
> @@ -884,7 +884,7 @@ struct dev_links_info {
> struct list_head suppliers;
> struct list_head consumers;
> enum dl_dev_state status;
> -};
> +} __packed;
>
> /**
> * struct device - The basic device structure


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