From: Max Gurtovoy <maxg@mellanox.com>
Date: Wed, 27 Jun 2018 14:58:02 +0300
Subject: [PATCH] nvmet-rdma: add unlikely check in the fast path
Git-commit: 2fc464e2162c2b2f7faf7404fa9c35d1cf70aa00
Patch-mainline: v4.19-rc1
References: bsc#1104967,FATE#325924
ib_post_send operation should succeed unless something unusual
happened to the ib device.
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Hannes Reinecke <hare@suse.com>
---
drivers/nvme/target/rdma.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/nvme/target/rdma.c b/drivers/nvme/target/rdma.c
index 2106ae2ec177..4ca09456bbbb 100644
--- a/drivers/nvme/target/rdma.c
+++ b/drivers/nvme/target/rdma.c
@@ -546,7 +546,7 @@ static void nvmet_rdma_queue_response(struct nvmet_req *req)
rsp->send_sge.addr, rsp->send_sge.length,
DMA_TO_DEVICE);
- if (ib_post_send(cm_id->qp, first_wr, &bad_wr)) {
+ if (unlikely(ib_post_send(cm_id->qp, first_wr, &bad_wr))) {
pr_err("sending cmd response failed\n");
nvmet_rdma_release_rsp(rsp);
}
--
2.16.4