On Thu, May 10 2007, Benny Halevy wrote:
> Jens Axboe wrote:
> > +#define sg_is_chain(sg)((unsigned long) (sg)->page & 0x01)
> > +#define sg_chain_ptr(sg) \
> > + ((struct scatterlist *) ((unsigned long) (sg)->page & ~0x01))
> > +
> > +/*
> > + * We overload the meaning of ->page fo
On Thu, May 10 2007, Andrew Morton wrote:
> 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 instea
Jens Axboe wrote:
> +#define sg_is_chain(sg) ((unsigned long) (sg)->page & 0x01)
> +#define sg_chain_ptr(sg) \
> + ((struct scatterlist *) ((unsigned long) (sg)->page & ~0x01))
> +
> +/*
> + * We overload the meaning of ->page for sg chaining. If the LSB is
> + * set, the page
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 sglis
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, u
On Thu, May 10 2007, Andrew Morton wrote:
> On Thu, 10 May 2007 12:21:49 +0200 Jens Axboe <[EMAIL PROTECTED]> wrote:
>
> > The core of the patch - allow the last sg element in a scatterlist
> > table to point to the start of a new table. We overload the LSB of
> > the page pointer to indicate whet
On Thu, 10 May 2007 12:21:49 +0200 Jens Axboe <[EMAIL PROTECTED]> wrote:
> The core of the patch - allow the last sg element in a scatterlist
> table to point to the start of a new table. We overload the LSB of
> the page pointer to indicate whether this is a valid sg entry, or
> merely a link to
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