Re: [PATCH v06 33/36] uapi linux/fsmap.h: use __kernel_size_t instead of size_t

From: Darrick J. Wong
Date: Mon Aug 07 2017 - 11:55:06 EST


On Sun, Aug 06, 2017 at 06:44:24PM +0200, Mikko Rapeli wrote:
> Fixes user space compilation error:
>
> linux/fsmap.h:71:19: error: unknown type name âsize_tâ
> static __inline__ size_t
> ^~~~~~
>
> Signed-off-by: Mikko Rapeli <mikko.rapeli@xxxxxx>
> Cc: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> ---
> include/uapi/linux/fsmap.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/include/uapi/linux/fsmap.h b/include/uapi/linux/fsmap.h
> index 7e8e5f0bd6d2..99600bbed6b6 100644
> --- a/include/uapi/linux/fsmap.h
> +++ b/include/uapi/linux/fsmap.h
> @@ -68,7 +68,7 @@ struct fsmap_head {
> };
>
> /* Size of an fsmap_head with room for nr records. */
> -static inline size_t
> +static inline __kernel_size_t

This is a static inline helper to assist in malloc calls. We don't pass
size_t to the kernel, so why is this necessary over, say,

#include <sys/types.h>

--D

> fsmap_sizeof(
> unsigned int nr)
> {
> --
> 2.13.3
>