Kernel: Release page directory and MM locks sooner in space finalization

We don't need to hold these locks when tearing down the region tree.
Release them as soon as unmapping is finished.

1 files changed, 6 insertions, 4 deletions

diff --git a/Kernel/Memory/AddressSpace.cpp b/Kernel/Memory/AddressSpace.cpp
index a4379186b8..ea47ee91a3 100644
--- a/Kernel/Memory/AddressSpace.cpp
+++ b/Kernel/Memory/AddressSpace.cpp
@@ -321,10 +321,12 @@ void AddressSpace::remove_all_regions(Badge<Process>)
 {
     VERIFY(Thread::current() == g_finalizer);
     SpinlockLocker locker(m_lock);
-    SpinlockLocker pd_locker(m_page_directory->get_lock());
-    SpinlockLocker mm_locker(s_mm_lock);
-    for (auto& region : m_regions)
-        (*region).unmap_with_locks_held(Region::ShouldDeallocateVirtualRange::No, ShouldFlushTLB::No, pd_locker, mm_locker);
+    {
+        SpinlockLocker pd_locker(m_page_directory->get_lock());
+        SpinlockLocker mm_locker(s_mm_lock);
+        for (auto& region : m_regions)
+            (*region).unmap_with_locks_held(Region::ShouldDeallocateVirtualRange::No, ShouldFlushTLB::No, pd_locker, mm_locker);
+    }
     m_regions.clear();
 }