On Tue, May 10, 2016 at 05:14:57PM -0700, Bart Van Assche wrote:
> The SRP initiator allows to set max_sectors to a value that exceeds
> the largest amount of data that can be mapped at once with an mlx4
> HCA using fast registration and a page size of 4 KB. Hence modify
> ib_map_mr_sg() such that it can map partial sg-elements. If an
> sg-element has been mapped partially, let the caller know
> which fraction has been mapped by adjusting *sg_offset.
>
> Signed-off-by: Bart Van Assche <bart.vanassche@xxxxxxxxxxx>
> Cc: Christoph Hellwig <hch@xxxxxx>
> Cc: Sagi Grimberg <sagi@xxxxxxxxxxx>
> Cc: Laurence Oberman <loberman@xxxxxxxxxx>
> ---
> --- a/drivers/infiniband/hw/mlx5/mr.c
> +++ b/drivers/infiniband/hw/mlx5/mr.c
> @@ -1752,10 +1752,11 @@ static int
> mlx5_ib_sg_to_klms(struct mlx5_ib_mr *mr,
> struct scatterlist *sgl,
> unsigned short sg_nents,
> - unsigned int sg_offset)
> + unsigned int *sg_offset_p)
> {
I wonder on which tree are you basing?
In Linus (4.6-rc7) the function signature is different [1], the same
goes for my tree and Doug's for-4.7 branch [2].
[1] https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/drivers/infiniband/hw/mlx5/mr.c#n1752
[2] https://github.com/dledford/linux/blob/k.o/for-4.7/drivers/infiniband/hw/mlx5/mr.c#L1752
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