From: Chengchang Tang Date: Sat, 26 Nov 2022 10:29:08 +0000 (+0800) Subject: RDMA/hns: Fix PBL page MTR find X-Git-Tag: v5.15.92~1037 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4c05c7cf25813a415001f8b9d07c1dcb10abfa03;p=platform%2Fkernel%2Flinux-rpi.git RDMA/hns: Fix PBL page MTR find [ Upstream commit 9fb39ef2ff3e18f1740625ba04093dfbef086d2b ] Now, The address of the first two pages in the MR will be searched, which use to speed up the lookup of the pbl table for hardware. An exception will occur when there is only one page in this MR. This patch fix the number of page to search. Fixes: 9b2cf76c9f05 ("RDMA/hns: Optimize PBL buffer allocation process") Link: https://lore.kernel.org/r/20221126102911.2921820-4-xuhaoyue1@hisilicon.com Signed-off-by: Chengchang Tang Signed-off-by: Haoyue Xu Signed-off-by: Jason Gunthorpe Signed-off-by: Sasha Levin --- diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c index 155ae20..b9557be 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c @@ -3024,7 +3024,8 @@ static int set_mtpt_pbl(struct hns_roce_dev *hr_dev, int i, count; count = hns_roce_mtr_find(hr_dev, &mr->pbl_mtr, 0, pages, - ARRAY_SIZE(pages), &pbl_ba); + min_t(int, ARRAY_SIZE(pages), mr->npages), + &pbl_ba); if (count < 1) { ibdev_err(ibdev, "failed to find PBL mtr, count = %d.\n", count);