From: Kefu Chai <kchai@redhat.com>
Date: Thu, 29 Oct 2020 10:35:24 +0000 (+0800)
Subject: osd/osd_types: mark unused variable [[maybe_unused]]
X-Git-Tag: v16.1.0~728^2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=refs%2Fpull%2F37893%2Fhead;p=ceph.git

osd/osd_types: mark unused variable [[maybe_unused]]

silences warning like:

rc/osd/osd_types.h:5482:18: warning: unused variable '_' [-Wunused-variable]
     auto [iter, _] = ref_delta.try_emplace(hoid, 0);
                  ^

Signed-off-by: Kefu Chai <kchai@redhat.com>
---

diff --git a/src/osd/osd_types.h b/src/osd/osd_types.h
index 636c3e710c5a..0d61765ba143 100644
--- a/src/osd/osd_types.h
+++ b/src/osd/osd_types.h
@@ -5479,7 +5479,7 @@ public:
     mut_ref(hoid, num);
   }
   void mut_ref(const hobject_t &hoid, int num) {
-    auto [iter, _] = ref_delta.try_emplace(hoid, 0);
+    [[maybe_unused]] auto [iter, _] = ref_delta.try_emplace(hoid, 0);
     iter->second += num;
     if (iter->second == 0)
       ref_delta.erase(iter);