Re: [Intel-gfx] [PATCH rdma-next v4 4/4] RDMA/umem: Move to allocate SG table from pages

Jason Gunthorpe
2020-09-30T16:53:55Z

On Wed, Sep 30, 2020 at 06:05:15PM +0300, Maor Gottlieb wrote:
> This is right only for the last iteration. E.g. in the first iteration in
> case that there are more pages (left_pages), then we allocate
> SG_MAX_SINGLE_ALLOC.  We don't know how many pages from the second iteration
> will be squashed to the SGE from the first iteration.

Well, it is 0 or 1 SGE's. Check if the first page is mergable and
subtract one from the required length?

I dislike this sg_mark_end() it is something that should be internal,
IMHO.

Jason