From ac3ea277aad289bb9c9a050646041cb14e301f4d Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Wed, 24 Aug 2022 12:30:59 +0200
Subject: [PATCH] Kernel: Don't take MM lock in ~PageDirectory()

We don't need the MM lock to unregister a PageDirectory from the CR3
map. This is already protected by the CR3 map's own lock.
---
 Kernel/Memory/PageDirectory.cpp | 1 -
 1 file changed, 1 deletion(-)

diff --git a/Kernel/Memory/PageDirectory.cpp b/Kernel/Memory/PageDirectory.cpp
index f74cd7c4f6..2c858a7959 100644
--- a/Kernel/Memory/PageDirectory.cpp
+++ b/Kernel/Memory/PageDirectory.cpp
@@ -115,7 +115,6 @@ UNMAP_AFTER_INIT void PageDirectory::allocate_kernel_directory()
 PageDirectory::~PageDirectory()
 {
     if (is_cr3_initialized()) {
-        SpinlockLocker lock(s_mm_lock);
         deregister_page_directory(this);
     }
 }