Build provider 3rd arg from smb_request_t
hacking...

@@ -225,12 +225,11 @@
 
         rc = smbsr_decode_vwv(sr, "ww", &op->omode, &op->fqi.fq_sattr);
         if (rc == 0)
                 rc = smbsr_decode_data(sr, "%S", sr, &op->fqi.fq_path.pn_path);
 
-        DTRACE_SMB_2(op__Open__start, smb_request_t *, sr,
-            struct open_param *, op);
+        DTRACE_SMB_1(op__Open__start, smb_request_t *, sr); /* arg.open */
 
         return ((rc == 0) ? SDRC_SUCCESS : SDRC_ERROR);
 }
 
 void

@@ -365,12 +364,11 @@
                 op->crtime.tv_nsec = 0;
 
                 op->create_disposition = smb_ofun_to_crdisposition(op->ofun);
         }
 
-        DTRACE_SMB_2(op__OpenX__start, smb_request_t *, sr,
-            struct open_param *, op);
+        DTRACE_SMB_1(op__OpenX__start, smb_request_t *, sr); /* arg.open */
 
         return ((rc == 0) ? SDRC_SUCCESS : SDRC_ERROR);
 }
 
 void