Re: [PATCH] ceph: use BUG() instead of BUG_ON(1)

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On Mon, Jan 16, 2017 at 12:06 PM, Arnd Bergmann <arnd@xxxxxxxx> wrote:
> I ran into this compile warning, which is the result of BUG_ON(1)
> not always leading to the compiler treating the code path as
> unreachable:
>
> include/linux/ceph/osdmap.h: In function 'ceph_can_shift_osds':
> include/linux/ceph/osdmap.h:62:1: error: control reaches end of non-void function [-Werror=return-type]
>
> Using BUG() here avoids the warning.
>
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> ---
>  include/linux/ceph/osdmap.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/include/linux/ceph/osdmap.h b/include/linux/ceph/osdmap.h
> index 9a9041784dcf..412906609954 100644
> --- a/include/linux/ceph/osdmap.h
> +++ b/include/linux/ceph/osdmap.h
> @@ -57,7 +57,7 @@ static inline bool ceph_can_shift_osds(struct ceph_pg_pool_info *pool)
>         case CEPH_POOL_TYPE_EC:
>                 return false;
>         default:
> -               BUG_ON(1);
> +               BUG();
>         }
>  }

Applied.

Thanks,

                Ilya
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