On Thu, 10 May 2007 12:46:53 +0200 Jens Axboe <[email protected]> wrote:
> On Thu, May 10 2007, Jens Axboe wrote:
> > Yeah, I'm inclined to agree. Perhaps it would be better to put this
> > stuff in lib/scatterlist.c or something like that instead?
> >
> > > > +/*
> > > > + * Chain previous sglist to this one
> > > > + */
> > > > +static inline void sg_chain(struct scatterlist *prv, unsigned int prv_nents,
> > > > + struct scatterlist *sgl)
> > > > +{
> > > > +#ifndef ARCH_HAS_SG_CHAIN
> > > > + BUG();
> > > > +#endif
> > >
> > > Can use BUILD_BUG_ON here. Or just #error.
> >
> > Good idea, thanks!
>
> No wait a second, that wont work. The code is always being built in sg
> scsi_lib.c, it should just not be called unless we can do chaining. We
> will never have a large number of segments that require chaining without
> ARCH_HAS_SG_CHAIN, so it'll never be called in that case. So it has to
> remain as it is, a BUG().
Confused. If it should never be called, why does it even get compiled in?
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