From d293d5e7901b98c3f580b34e6b9fb477191f079f Mon Sep 17 00:00:00 2001
From: Radoslaw Zarzynski <rzarzyns@redhat.com>
Date: Tue, 26 Nov 2024 22:13:18 +0000
Subject: [PATCH] os, os/memstore: make the omap_iterate reentrant

Signed-off-by: Radoslaw Zarzynski <rzarzyns@redhat.com>
---
 src/os/memstore/MemStore.cc | 2 +-
 src/os/memstore/MemStore.h  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/os/memstore/MemStore.cc b/src/os/memstore/MemStore.cc
index 24f172898e7..0e7e19665df 100644
--- a/src/os/memstore/MemStore.cc
+++ b/src/os/memstore/MemStore.cc
@@ -631,7 +631,7 @@ int MemStore::omap_iterate(
 
   bool more = false;
   {
-    std::lock_guard lock{o->omap_mutex};
+    std::shared_lock lock{o->omap_mutex};
 
     // obtain seek the iterator
     decltype(o->omap)::iterator it;
diff --git a/src/os/memstore/MemStore.h b/src/os/memstore/MemStore.h
index fc0bc96db7b..358068fef47 100644
--- a/src/os/memstore/MemStore.h
+++ b/src/os/memstore/MemStore.h
@@ -33,7 +33,7 @@ class MemStore : public ObjectStore {
 public:
   struct Object : public RefCountedObject {
     ceph::mutex xattr_mutex{ceph::make_mutex("MemStore::Object::xattr_mutex")};
-    ceph::mutex omap_mutex{ceph::make_mutex("MemStore::Object::omap_mutex")};
+    ceph::shared_mutex omap_mutex{ceph::make_shared_mutex("MemStore::Object::omap_mutex")};
     std::map<std::string,ceph::buffer::ptr,std::less<>> xattr;
     ceph::buffer::list omap_header;
     std::map<std::string,ceph::buffer::list> omap;
-- 
2.39.5