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RDMA/rtrs-clt: Correct the checking of ib_map_mr_sg

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We should check with count, also the only successful case is that
all sg elements are mapped, so make it explicitly.

Acked-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Guoqing Jiang <guoqing.jiang@linux.dev>
Link: https://lore.kernel.org/r/20221117101945.6317-5-guoqing.jiang@linux.dev
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Guoqing Jiang 2022-11-17 18:19:41 +08:00 committed by Leon Romanovsky
parent 102d2f70ec
commit f5708e6699
1 changed files with 2 additions and 4 deletions
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6
drivers/infiniband/ulp/rtrs/rtrs-clt.c
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@ -1064,10 +1064,8 @@ static int rtrs_map_sg_fr(struct rtrs_clt_io_req *req, size_t count)
/* Align the MR to a 4K page size to match the block virt boundary */
nr = ib_map_mr_sg(req->mr, req->sglist, count, NULL, SZ_4K);
if (nr < 0)
return nr;
if (nr < req->sg_cnt)
return -EINVAL;
if (nr != count)
return nr < 0 ? nr : -EINVAL;
ib_update_fast_reg_key(req->mr, ib_inc_rkey(req->mr->rkey));
return nr;