nvmet: use req->cmd directly in bdev-ns fast path

The function nvmet_bdev_parse_io_cmd() is called from the fast path.
The local variable to that function cmd is only used once.

Remove the local variable and use req->cmd directly.

Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

diff --git a/drivers/nvme/target/io-cmd-bdev.c b/drivers/nvme/target/io-cmd-bdev.c
index f673679d258a6bc27bf7c4e2b188eb880b8b0525..5d998e5873d3f7f6e98ef90fde2d9d8451217e95 100644 (file)
--- a/drivers/nvme/target/io-cmd-bdev.c
+++ b/drivers/nvme/target/io-cmd-bdev.c
@@ -429,9 +429,7 @@ static void nvmet_bdev_execute_write_zeroes(struct nvmet_req *req)
 
 u16 nvmet_bdev_parse_io_cmd(struct nvmet_req *req)
 {
-       struct nvme_command *cmd = req->cmd;
-
-       switch (cmd->common.opcode) {
+       switch (req->cmd->common.opcode) {
        case nvme_cmd_read:
        case nvme_cmd_write:
                req->execute = nvmet_bdev_execute_rw;