From d7c72248cb524b12826fe843d9f64e39f379f68c Mon Sep 17 00:00:00 2001
From: Samuel Just <sjust@redhat.com>
Date: Mon, 1 Jun 2020 12:02:35 -0700
Subject: [PATCH] crimson/os/seastore/cached_extent: add buffer sharing
 constructor

Signed-off-by: Samuel Just <sjust@redhat.com>
---
 src/crimson/os/seastore/cached_extent.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/crimson/os/seastore/cached_extent.h b/src/crimson/os/seastore/cached_extent.h
index 83d54c77ead..463f5eeae59 100644
--- a/src/crimson/os/seastore/cached_extent.h
+++ b/src/crimson/os/seastore/cached_extent.h
@@ -278,6 +278,7 @@ private:
   }
 
 protected:
+  CachedExtent(CachedExtent &&other) = default;
   CachedExtent(ceph::bufferptr &&ptr) : ptr(std::move(ptr)) {}
   CachedExtent(const CachedExtent &other)
     : state(other.state),
@@ -285,6 +286,14 @@ protected:
       version(other.version),
       poffset(other.poffset) {}
 
+  struct share_buffer_t {};
+  CachedExtent(const CachedExtent &other, share_buffer_t) :
+    state(other.state),
+    ptr(other.ptr),
+    version(other.version),
+    poffset(other.poffset) {}
+
+
   friend class Cache;
   template <typename T, typename... Args>
   static TCachedExtentRef<T> make_cached_extent_ref(Args&&... args) {
-- 
2.39.5