crimson/os: mark unused variable [[maybe_unused]]

silences the warning when building with -DNDEBUG:

segment_cleaner.h:399:10: warning: unused variable ‘ret’ [-Wunused-variable]
  399 |     auto ret = space_tracker->allocate(
      |          ^~~

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

diff --git a/src/crimson/os/seastore/segment_cleaner.h b/src/crimson/os/seastore/segment_cleaner.h
index 14e2a04f56272dd6d17314d0bba37127de9a8bf2..51a5636029efd28748c991d0129a46727c4aca60 100644 (file)
--- a/src/crimson/os/seastore/segment_cleaner.h
+++ b/src/crimson/os/seastore/segment_cleaner.h
@@ -396,7 +396,7 @@ public:
     }
 
     used_bytes += len;
-    auto ret = space_tracker->allocate(
+    [[maybe_unused]] auto ret = space_tracker->allocate(
       addr.segment,
       addr.offset,
       len);
@@ -412,7 +412,7 @@ public:
     used_bytes -= len;
     assert(addr.segment < segments.size());
 
-    auto ret = space_tracker->release(
+    [[maybe_unused]] auto ret = space_tracker->release(
       addr.segment,
       addr.offset,
       len);