common/TrackedOp: do not count the ops marked as nowarn

If an op is marked as nowarn then it won't be counted as the slow
requests, but currently it will count the initiated time when
iterating the inflight ops.

For example:

[WRN] : 1 slow requests, 1 included below; oldest blocked for > 38.764892 secs
[WRN] : slow request 33.875059 seconds old, received at 2024-06-17T14:14:34.228261+0000: client_request(client.78109915:11369251 mkdir #0x1008ecedea2/chk-89588 2024-06-17T14:14:34.097825+0000 caller_uid=1002960000, caller_gid=0{0,1002960000,}) currently failed to wrlock, waiting

The oldest blocked request is 38.764892 old, but the oldest slow
request reported is 33.875059 old.

Fixes: commit e4160d7e783 ("mds: don't report slow request for blocked filelock request")
Fixes: https://tracker.ceph.com/issues/66557
Signed-off-by: Xiubo Li <xiubli@redhat.com>
(cherry picked from commit 8debaf59b1d07e2dc48e96052800d67155e71ae4)

Conflicts:
	- The commit c036b151465("common: support long running ops without
	  slow warnings") is missing

diff --git a/src/common/TrackedOp.cc b/src/common/TrackedOp.cc
index 32a1ab472a89f82096454b2ed672e173963a971c..96cfa2a1cbc0a6e535edc139f7baf0aae4f5e6d3 100644 (file)
--- a/src/common/TrackedOp.cc
+++ b/src/common/TrackedOp.cc
@@ -342,12 +342,15 @@ bool OpTracker::visit_ops_in_flight(utime_t* oldest_secs,
   for (const auto sdata : sharded_in_flight_list) {
     ceph_assert(sdata);
     std::lock_guard locker(sdata->ops_in_flight_lock_sharded);
-    if (!sdata->ops_in_flight_sharded.empty()) {
-      utime_t oldest_op_tmp =
-       sdata->ops_in_flight_sharded.front().get_initiated();
+    for (auto& op : sdata->ops_in_flight_sharded) {
+      if (!op.warn_interval_multiplier)
+       continue;
+
+      utime_t oldest_op_tmp = op.get_initiated();
       if (oldest_op_tmp < oldest_op) {
         oldest_op = oldest_op_tmp;
       }
+      break;
     }
     std::transform(std::begin(sdata->ops_in_flight_sharded),
                    std::end(sdata->ops_in_flight_sharded),