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authorIsrael Rukshin <israelr@mellanox.com>2019-10-13 19:57:34 +0300
committerJens Axboe <axboe@kernel.dk>2019-11-04 10:56:41 -0700
commit59534b9d606e7f566970a6f8621c6022f7c19ff1 (patch)
treec8bbe262d1f014b9c7bca2142b03535446995196 /drivers/nvme/target
parente522f446027845e3c8b563d021f37e8f3d30c9d9 (diff)
downloadlinux-59534b9d606e7f566970a6f8621c6022f7c19ff1.tar.bz2
nvmet-rdma: add unlikely check at nvmet_rdma_map_sgl_keyed
The calls to nvmet_req_alloc_sgl and rdma_rw_ctx_init should usually succeed, so add this simple optimization to the fast path. Signed-off-by: Israel Rukshin <israelr@mellanox.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Max Gurtovoy <maxg@mellanox.com> Signed-off-by: Keith Busch <kbusch@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/nvme/target')
-rw-r--r--drivers/nvme/target/rdma.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/nvme/target/rdma.c b/drivers/nvme/target/rdma.c
index 36d906a7f70d..ccf982164136 100644
--- a/drivers/nvme/target/rdma.c
+++ b/drivers/nvme/target/rdma.c
@@ -672,13 +672,13 @@ static u16 nvmet_rdma_map_sgl_keyed(struct nvmet_rdma_rsp *rsp,
return 0;
ret = nvmet_req_alloc_sgl(&rsp->req);
- if (ret < 0)
+ if (unlikely(ret < 0))
goto error_out;
ret = rdma_rw_ctx_init(&rsp->rw, cm_id->qp, cm_id->port_num,
rsp->req.sg, rsp->req.sg_cnt, 0, addr, key,
nvmet_data_dir(&rsp->req));
- if (ret < 0)
+ if (unlikely(ret < 0))
goto error_out;
rsp->n_rdma += ret;