Re: [PATCH 3/5] nbd: use flags instead of bool

[Jens Axboe]

On 09/08/2016 07:20 PM, Joe Perches wrote:
> On Thu, 2016-09-08 at 17:12 -0400, Josef Bacik wrote:
> > In preparation for some future changes, change a few of the state bools over to
> > normal bits to set/clear properly.
> []
> > diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
> []
> > @@ -41,8 +41,12 @@
> >
> >  #include <linux/nbd.h>
> >
> > +#define NBD_TIMEDOUT			0
> > +#define NBD_DISCONNECT_REQUESTED	1
> > +
> >  struct nbd_device {
> >  	u32 flags;
> > +	unsigned long runtime_flags;
>
> Better to use DECLARE_BITMAP

It's a few flags, we know it fits in a long. There's no point to using
anything but that, and set/test/clear_bit().

--
Jens Axboe