nvme: Use metadata for passthrough commands

The ioctls' struct allows the user to provide a metadata address and
length for a passthrough command. This patch uses these values that were
previously ignored and deletes the now unused wrapper function.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 01f39a9..277a7a0 100644 (file)
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -634,7 +634,7 @@ out:
        return ERR_PTR(ret);
 }
 
-static int __nvme_submit_user_cmd(struct request_queue *q,
+static int nvme_submit_user_cmd(struct request_queue *q,
                struct nvme_command *cmd, void __user *ubuffer,
                unsigned bufflen, void __user *meta_buffer, unsigned meta_len,
                u32 meta_seed, u32 *result, unsigned timeout)
@@ -690,14 +690,6 @@ static int __nvme_submit_user_cmd(struct request_queue *q,
        return ret;
 }
 
-static int nvme_submit_user_cmd(struct request_queue *q, struct nvme_command *cmd,
-               void __user *ubuffer, unsigned bufflen, u32 *result,
-               unsigned timeout)
-{
-       return __nvme_submit_user_cmd(q, cmd, ubuffer, bufflen, NULL, 0, 0,
-                       result, timeout);
-}
-
 static void nvme_keep_alive_end_io(struct request *rq, blk_status_t status)
 {
        struct nvme_ctrl *ctrl = rq->end_io_data;
@@ -987,7 +979,7 @@ static int nvme_submit_io(struct nvme_ns *ns, struct nvme_user_io __user *uio)
        c.rw.apptag = cpu_to_le16(io.apptag);
        c.rw.appmask = cpu_to_le16(io.appmask);
 
-       return __nvme_submit_user_cmd(ns->queue, &c,
+       return nvme_submit_user_cmd(ns->queue, &c,
                        (void __user *)(uintptr_t)io.addr, length,
                        metadata, meta_len, io.slba, NULL, 0);
 }
@@ -1025,7 +1017,8 @@ static int nvme_user_cmd(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
 
        status = nvme_submit_user_cmd(ns ? ns->queue : ctrl->admin_q, &c,
                        (void __user *)(uintptr_t)cmd.addr, cmd.data_len,
-                       &cmd.result, timeout);
+                       (void __user *)(uintptr_t)cmd.metadata, cmd.metadata,
+                       0, &cmd.result, timeout);
        if (status >= 0) {
                if (put_user(cmd.result, &ucmd->result))
                        return -EFAULT;