Commit 0633e237 authored by Jack Wang's avatar Jack Wang Committed by Jason Gunthorpe
Browse files

RDMA/rtrs-clt: Cap max_io_size 

Max io size is limited by both remote buffer size and the max fr pages per
mr.

Link: https://lore.kernel.org/r/20210325153308.1214057-20-gi-oh.kim@ionos.com


Signed-off-by: default avatarJack Wang <jinpu.wang@ionos.com>
Reviewed-by: default avatarMd Haris Iqbal <haris.iqbal@ionos.com>
Signed-off-by: default avatarGioh Kim <gi-oh.kim@ionos.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@nvidia.com>
parent 11b74cbf

drivers/infiniband/ulp/rtrs/rtrs-clt.c

+3 −1
Original line number Diff line number Diff line
@@ -2901,7 +2901,9 @@ int rtrs_clt_query(struct rtrs_clt *clt, struct rtrs_attrs *attr) 
		return -ECOMM;



	attr->queue_depth      = clt->queue_depth;

	attr->max_io_size      = clt->max_io_size;

	/* Cap max_io_size to min of remote buffer size and the fr pages */

	attr->max_io_size = min_t(int, clt->max_io_size,

				  clt->max_segments * SZ_4K);



	return 0;

}