On 13 February 2013 15:10, Imre Deak <imre.deak@xxxxxxxxx> wrote:
> For better code reuse use the newly added page iterator to iterate
> through the pages. The offset, length within the page is still
> calculated by the mapping iterator as well as the actual mapping.
> Idea from Tejun Heo <tj@xxxxxxxxxx>.
>
> Signed-off-by: Imre Deak <imre.deak@xxxxxxxxx>
> ---
> include/linux/scatterlist.h | 6 +++---
> lib/scatterlist.c | 46 ++++++++++++++++++++-----------------------
> 2 files changed, 24 insertions(+), 28 deletions(-)
>
> diff --git a/include/linux/scatterlist.h b/include/linux/scatterlist.h
> index 788a853..a6cd692 100644
> --- a/include/linux/scatterlist.h
> +++ b/include/linux/scatterlist.h
> @@ -295,9 +295,9 @@ struct sg_mapping_iter {
> size_t consumed; /* number of consumed bytes */
>
> /* these are internal states, keep away */
> - struct scatterlist *__sg; /* current entry */
> - unsigned int __nents; /* nr of remaining entries */
> - unsigned int __offset; /* offset within sg */
> + unsigned int __offset; /* offset within page */
> + struct sg_page_iter __piter; /* page iterator */
> + unsigned int __remaining; /* remaining bytes on page */
> unsigned int __flags;
> };
Hi,
FYI, in next-20130220 this appears to break the build of the dw_mmc driver:
drivers/mmc/host/dw_mmc.c In function 'dw_mci_read_data_pio':
drivers/mmc/host/dw_mmc.c +1457 : error: 'struct sg_mapping_iter' has
no member named '__sg'
drivers/mmc/host/dw_mmc.c In function 'dw_mci_write_data_pio':
drivers/mmc/host/dw_mmc.c +1512 : error: 'struct sg_mapping_iter' has
no member named '__sg'
Cheers
James
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