cifs: make cifs_send_async take a kvec array

We'll need this for async writes, so convert the call to take a kvec
array. CIFSSMBEcho is changed to put a kvec on the stack and pass
in the SMB buffer using that.

Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 83df937b814e..8791c74575d9 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -725,6 +725,7 @@ CIFSSMBEcho(struct TCP_Server_Info *server)
 {
         ECHO_REQ *smb;
         int rc = 0;
+        struct kvec iov;
 
         cFYI(1, "In echo request");
 
@@ -739,9 +740,10 @@ CIFSSMBEcho(struct TCP_Server_Info *server)
         put_bcc(1, &smb->hdr);
         smb->Data[0] = 'a';
         inc_rfc1001_len(smb, 3);
+        iov.iov_base = smb;
+        iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4;
 
-        rc = cifs_call_async(server, (struct smb_hdr *)smb,
-                                cifs_echo_callback, server);
+        rc = cifs_call_async(server, &iov, 1, cifs_echo_callback, server);
         if (rc)
                 cFYI(1, "Echo request failed: %d", rc);