From 7cd0aa0db0c8f7452d7705a93d765981753b48c4 Mon Sep 17 00:00:00 2001
From: Matan Breizman <mbreizma@redhat.com>
Date: Sun, 2 Jul 2023 12:34:54 +0000
Subject: [PATCH] crimson/osd/shard_services: add comment to next_tid
 initialization

Signed-off-by: Matan Breizman <mbreizma@redhat.com>
---
 src/crimson/osd/shard_services.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/crimson/osd/shard_services.cc b/src/crimson/osd/shard_services.cc
index 404f28d7d7f3b..c0688f9576996 100644
--- a/src/crimson/osd/shard_services.cc
+++ b/src/crimson/osd/shard_services.cc
@@ -47,6 +47,8 @@ PerShardState::PerShardState(
     perf(perf), recoverystate_perf(recoverystate_perf),
     throttler(crimson::common::local_conf()),
     next_tid(
+      // Use shard_id to initialize upper 8 bits of counters to ensure that
+      // ids generated by different shards are disjoint
       static_cast<ceph_tid_t>(seastar::this_shard_id()) <<
       (std::numeric_limits<ceph_tid_t>::digits - 8)),
     startup_time(startup_time)
-- 
2.39.5