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

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We don't need to hold these locks when tearing down the region tree.
Release them as soon as unmapping is finished.
This commit is contained in:
Andreas Kling 2022-01-30 16:07:59 +01:00
parent fcd3844da6
commit a44316fa8b
1 changed files with 6 additions and 4 deletions
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10
Kernel/Memory/AddressSpace.cpp
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@ -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();
}