Kernel: Port Custody to ListedRefCounted

Custody's unref is one of many implementions of ListedRefCounted's
behaviour in the Kernel, which results in avoidable bugs caused by
the fragmentation of the implementations. This commit starts the work
of replacing all custom implementations with ListedRefCounted by
porting Custody to it.

1 files changed, 4 insertions, 4 deletions

diff --git a/Kernel/FileSystem/Custody.h b/Kernel/FileSystem/Custody.h
index 64a4c4dae1..b688ae660c 100644
--- a/Kernel/FileSystem/Custody.h
+++ b/Kernel/FileSystem/Custody.h
@@ -8,20 +8,19 @@
 
 #include <AK/Error.h>
 #include <AK/IntrusiveList.h>
-#include <AK/RefCounted.h>
 #include <AK/RefPtr.h>
 #include <AK/String.h>
 #include <Kernel/Forward.h>
 #include <Kernel/KString.h>
+#include <Kernel/Library/ListedRefCounted.h>
+#include <Kernel/Locking/MutexProtected.h>
 
 namespace Kernel {
 
 // FIXME: Custody needs some locking.
 
-class Custody : public RefCountedBase {
+class Custody : public ListedRefCounted<Custody, LockType::Mutex> {
 public:
-    bool unref() const;
-
     static ErrorOr<NonnullRefPtr<Custody>> try_create(Custody* parent, StringView name, Inode&, int mount_flags);
 
     ~Custody();
@@ -49,6 +48,7 @@ private:
 
 public:
     using AllCustodiesList = IntrusiveList<&Custody::m_all_custodies_list_node>;
+    static MutexProtected<Custody::AllCustodiesList>& all_instances();
 };
 
 }