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nvmet: remove extra variable in id-desclist 

We remove the extra local variable struct nvmet_ns in
nvmet_execute_identify_desclist() since req already has ns member that
can be reused, this also eliminates the explicit call to
nvmet_put_namespace() which is already present in the request
completion path.

Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Chaitanya Kulkarni 2021-01-13 17:33:53 -08:00 committed by Christoph Hellwig
parent 624e67fdf9
commit 3631c7f4a2
1 changed files with 9 additions and 11 deletions
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20
drivers/nvme/target/admin-cmd.c
View File

@ -605,37 +605,35 @@ static u16 nvmet_copy_ns_identifier(struct nvmet_req *req, u8 type, u8 len,
static void nvmet_execute_identify_desclist(struct nvmet_req *req)
{
struct nvmet_ns *ns;
u16 status = 0;
off_t off = 0;
ns = nvmet_find_namespace(req->sq->ctrl, req->cmd->identify.nsid);
if (!ns) {
req->ns = nvmet_find_namespace(req->sq->ctrl, req->cmd->identify.nsid);
if (!req->ns) {
req->error_loc = offsetof(struct nvme_identify, nsid);
status = NVME_SC_INVALID_NS | NVME_SC_DNR;
goto out;
}
if (memchr_inv(&ns->uuid, 0, sizeof(ns->uuid))) {
if (memchr_inv(&req->ns->uuid, 0, sizeof(req->ns->uuid))) {
status = nvmet_copy_ns_identifier(req, NVME_NIDT_UUID,
NVME_NIDT_UUID_LEN,
&ns->uuid, &off);
&req->ns->uuid, &off);
if (status)
goto out_put_ns;
goto out;
}
if (memchr_inv(ns->nguid, 0, sizeof(ns->nguid))) {
if (memchr_inv(req->ns->nguid, 0, sizeof(req->ns->nguid))) {
status = nvmet_copy_ns_identifier(req, NVME_NIDT_NGUID,
NVME_NIDT_NGUID_LEN,
&ns->nguid, &off);
&req->ns->nguid, &off);
if (status)
goto out_put_ns;
goto out;
}
if (sg_zero_buffer(req->sg, req->sg_cnt, NVME_IDENTIFY_DATA_SIZE - off,
off) != NVME_IDENTIFY_DATA_SIZE - off)
status = NVME_SC_INTERNAL | NVME_SC_DNR;
out_put_ns:
nvmet_put_namespace(ns);
out:
nvmet_req_complete(req, status);
}