{
        if (fid_seq_is_mdt0(oi->oi.oi_seq)) {
                if (oid >= IDIF_MAX_OID) {
-                       CERROR("Bad %llu to set " DOSTID "\n", oid, POSTID(oi));
+                       CERROR("Too large OID %#llx to set MDT0 " DOSTID "\n",
+                              oid, POSTID(oi));
                        return;
                }
                oi->oi.oi_id = oid;
        } else if (fid_is_idif(&oi->oi_fid)) {
                if (oid >= IDIF_MAX_OID) {
-                       CERROR("Bad %llu to set "DOSTID"\n",
+                       CERROR("Too large OID %#llx to set IDIF " DOSTID "\n",
                               oid, POSTID(oi));
                        return;
                }
 
        if (fid_is_idif(fid)) {
                if (oid >= IDIF_MAX_OID) {
-                       CERROR("Too large OID %#llx to set IDIF "DFID"\n",
+                       CERROR("Too large OID %#llx to set IDIF " DFID "\n",
                               (unsigned long long)oid, PFID(fid));
                        return -EBADF;
                }
                fid->f_ver = oid >> 48;
        } else {
                if (oid >= OBIF_MAX_OID) {
-                       CERROR("Too large OID %#llx to set REG "DFID"\n",
+                       CERROR("Too large OID %#llx to set REG " DFID "\n",
                               (unsigned long long)oid, PFID(fid));
                        return -EBADF;
                }
 
 }
 
 /* printf display format
- * e.g. printf("file FID is "DFID"\n", PFID(fid));
+ * * usage: printf("file FID is "DFID"\n", PFID(fid));
  */
 #define FID_NOBRACE_LEN 40
 #define FID_LEN (FID_NOBRACE_LEN + 2)
 #define DFID_NOBRACE "%#llx:0x%x:0x%x"
 #define DFID "["DFID_NOBRACE"]"
-#define PFID(fid)     \
-       (fid)->f_seq, \
-       (fid)->f_oid, \
-       (fid)->f_ver
+#define PFID(fid) (unsigned long long)(fid)->f_seq, (fid)->f_oid, (fid)->f_ver
 
-/* scanf input parse format -- strip '[' first.
- * e.g. sscanf(fidstr, SFID, RFID(&fid));
+/* scanf input parse format for fids in DFID_NOBRACE format
+ * Need to strip '[' from DFID format first or use "["SFID"]" at caller.
+ * usage: sscanf(fidstr, SFID, RFID(&fid));
  */
 #define SFID "0x%llx:0x%x:0x%x"
-#define RFID(fid)     \
-       &((fid)->f_seq), \
-       &((fid)->f_oid), \
-       &((fid)->f_ver)
+#define RFID(fid) &((fid)->f_seq), &((fid)->f_oid), &((fid)->f_ver)
 
 /********* Quotas **********/