@@ -30,8 +30,11 @@ static void __send_queued(struct ceph_osd_client *osdc);
static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd);
static void __register_request(struct ceph_osd_client *osdc,
struct ceph_osd_request *req);
+static void __unregister_request(struct ceph_osd_client *osdc,
+ struct ceph_osd_request *req);
static void __unregister_linger_request(struct ceph_osd_client *osdc,
struct ceph_osd_request *req);
+static void __enqueue_request(struct ceph_osd_request *req);
static void __send_request(struct ceph_osd_client *osdc,
struct ceph_osd_request *req);
@@ -836,6 +839,37 @@ __lookup_request_ge(struct ceph_osd_client *osdc,
return NULL;
}
+static void __kick_linger_request(struct ceph_osd_request *req)
+{
+ struct ceph_osd_client *osdc = req->r_osdc;
+ struct ceph_osd *osd = req->r_osd;
+
+ /*
+ * Linger requests need to be resent with a new tid to avoid
+ * the dup op detection logic on the OSDs. Achieve this with
+ * a re-register dance instead of open-coding.
+ */
+ ceph_osdc_get_request(req);
+ if (!list_empty(&req->r_linger_item))
+ __unregister_linger_request(osdc, req);
+ else
+ __unregister_request(osdc, req);
+ __register_request(osdc, req);
+ ceph_osdc_put_request(req);
+
+ /*
+ * Unless request has been registered as both normal and
+ * lingering, __unregister{,_linger}_request clears r_osd.
+ * However, here we need to preserve r_osd to make sure we
+ * requeue on the same OSD.
+ */
+ WARN_ON(req->r_osd || !osd);
+ req->r_osd = osd;
+
+ dout("%s requeueing %p tid %llu\n", __func__, req, req->r_tid);
+ __enqueue_request(req);
+}
+
/*
* Resubmit requests pending on the given osd.
*/
@@ -844,12 +878,14 @@ static void __kick_osd_requests(struct ceph_osd_client *osdc,
{
struct ceph_osd_request *req, *nreq;
LIST_HEAD(resend);
+ LIST_HEAD(resend_linger);
int err;
- dout("__kick_osd_requests osd%d\n", osd->o_osd);
+ dout("%s osd%d\n", __func__, osd->o_osd);
err = __reset_osd(osdc, osd);
if (err)
return;
+
/*
* Build up a list of requests to resend by traversing the
* osd's list of requests. Requests for a given object are
@@ -870,33 +906,32 @@ static void __kick_osd_requests(struct ceph_osd_client *osdc,
list_for_each_entry(req, &osd->o_requests, r_osd_item) {
if (!req->r_sent)
break;
- list_move_tail(&req->r_req_lru_item, &resend);
- dout("requeueing %p tid %llu osd%d\n", req, req->r_tid,
- osd->o_osd);
- if (!req->r_linger)
+
+ if (!req->r_linger) {
+ dout("%s requeueing %p tid %llu\n", __func__, req,
+ req->r_tid);
+ list_move_tail(&req->r_req_lru_item, &resend);
req->r_flags |= CEPH_OSD_FLAG_RETRY;
+ } else {
+ list_move_tail(&req->r_req_lru_item, &resend_linger);
+ }
}
list_splice(&resend, &osdc->req_unsent);
/*
- * Linger requests are re-registered before sending, which
- * sets up a new tid for each. We add them to the unsent
- * list at the end to keep things in tid order.
+ * Both registered and not yet registered linger requests are
+ * enqueued with a new tid on the same OSD. We add/move them
+ * to req_unsent/o_requests at the end to keep things in tid
+ * order.
*/
list_for_each_entry_safe(req, nreq, &osd->o_linger_requests,
r_linger_osd) {
- /*
- * reregister request prior to unregistering linger so
- * that r_osd is preserved.
- */
- BUG_ON(!list_empty(&req->r_req_lru_item));
- __register_request(osdc, req);
- list_add_tail(&req->r_req_lru_item, &osdc->req_unsent);
- list_add_tail(&req->r_osd_item, &req->r_osd->o_requests);
- __unregister_linger_request(osdc, req);
- dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid,
- osd->o_osd);
+ WARN_ON(!list_empty(&req->r_req_lru_item));
+ __kick_linger_request(req);
}
+
+ list_for_each_entry_safe(req, nreq, &resend_linger, r_req_lru_item)
+ __kick_linger_request(req);
}
/*