From 546e40091cc82d8d8b153b7678a2e62d7494e880 Mon Sep 17 00:00:00 2001
From: Adam Kupczyk <akupczyk@ibm.com>
Date: Mon, 16 Jan 2023 09:28:47 +0000
Subject: [PATCH] os/bluestore: Add operator<< for BufferSpace

Signed-off-by: Adam Kupczyk <akupczyk@ibm.com>
---
 src/os/bluestore/BlueStore.cc | 17 +++++++++++++++++
 src/os/bluestore/BlueStore.h  |  1 +
 2 files changed, 18 insertions(+)

diff --git a/src/os/bluestore/BlueStore.cc b/src/os/bluestore/BlueStore.cc
index 0ab8a77c1ed..c7cfbf9029c 100644
--- a/src/os/bluestore/BlueStore.cc
+++ b/src/os/bluestore/BlueStore.cc
@@ -1943,6 +1943,23 @@ void BlueStore::BufferSpace::split(BufferCacheShard* cache, size_t pos, BlueStor
   cache->_trim();
 }
 
+// lists content of BufferSpace
+// BufferSpace must be under exclusive access
+std::ostream& operator<<(std::ostream& out, const BlueStore::BufferSpace& bc)
+{
+  for (auto& [i, j] : bc.buffer_map) {
+    out << " [0x" << std::hex << i << "]=" << *j << std::dec;
+  }
+  if (!bc.writing.empty()) {
+    out << " writing:";
+    for (auto i = bc.writing.begin(); i != bc.writing.end(); ++i) {
+      out << " " << *i;
+    }
+  }
+  return out;
+}
+
+
 // OnodeSpace
 
 #undef dout_prefix
diff --git a/src/os/bluestore/BlueStore.h b/src/os/bluestore/BlueStore.h
index ef8e380dbb3..e2ed810c0b3 100644
--- a/src/os/bluestore/BlueStore.h
+++ b/src/os/bluestore/BlueStore.h
@@ -477,6 +477,7 @@ public:
       }
       f->close_section();
     }
+    friend std::ostream& operator<<(std::ostream& out, const BufferSpace& bc);
   };
 
   struct SharedBlobSet;
-- 
2.47.3