On 9/30/2020 6:14 PM, Jason Gunthorpe wrote:
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.
I can move it to __sg_alloc_table_from_pages:
sgt->nents = tmp_nents;
+ if (!left_pages)
+ sg_mark_end(s);
out:
return s;
Jason
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