On Thu, Oct 23, 2014 at 10:09:36AM -0600, Jens Axboe wrote:
> On 10/23/2014 10:04 AM, Sudip Mukherjee wrote:
> > while compiling integer err was showing as a set but unused variable.
> > elevator_init_fn can be either cfq_init_queue or deadline_init_queue
> > or noop_init_queue.
> > all three of these functions are returning -ENOMEM if they fail to
> > allocate the queue.
> > so we should actually be returning the error code rather than
> > returning 0 always.
> >
> > Signed-off-by: Sudip Mukherjee <su...@vectorindia.org>
> > ---
> >
> > change in v2: added elevator_put
> >
> > block/elevator.c | 6 ++++--
> > 1 file changed, 4 insertions(+), 2 deletions(-)
> >
> > diff --git a/block/elevator.c b/block/elevator.c
> > index 24c28b6..1267c2b 100644
> > --- a/block/elevator.c
> > +++ b/block/elevator.c
> > @@ -184,7 +184,7 @@ static void elevator_release(struct kobject *kobj)
> > int elevator_init(struct request_queue *q, char *name)
> > {
> > struct elevator_type *e = NULL;
> > - int err;
> > + int err = 0;
>
> Why init it to 0?
not required actually. my initial thinking was that we are returning 0 on
success or else the error code. so gave it a default value of 0.
but elevator_init_fn is returning 0 on success , so we will get 0 even if we do
not initialize it.
should i resend after modifying it?
thanks
sudip
>
> --
> Jens Axboe
>
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
