+ newbuf_size = size_roundup_power2(newbuf_size);
+
+ OBD_ALLOC_LARGE(newbuf, newbuf_size);
+ if (newbuf == NULL)
+ RETURN(-ENOMEM);
+
+ /* Must lock this, so that otherwise unprotected change of
+ * rq_reqmsg is not racing with parallel processing of
+ * imp_replay_list traversing threads. See LU-3333
+ * This is a bandaid at best, we really need to deal with this
+ * in request enlarging code before unpacking that's already
+ * there */
+ if (req->rq_import)
+ spin_lock(&req->rq_import->imp_lock);
+
+ memcpy(newbuf, req->rq_reqbuf, req->rq_reqbuf_len);
+
+ OBD_FREE_LARGE(req->rq_reqbuf, req->rq_reqbuf_len);
+ req->rq_reqbuf = newbuf;
+ req->rq_reqbuf_len = newbuf_size;
+ req->rq_reqmsg = lustre_msg_buf(req->rq_reqbuf,
+ PLAIN_PACK_MSG_OFF, 0);
+
+ if (req->rq_import)
+ spin_unlock(&req->rq_import->imp_lock);
+ }