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Kernel: Use RefPtr instead of LockRefPtr for PhysicalPage

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I believe this to be safe, as the main thing that LockRefPtr provides
over RefPtr is safe copying from a shared LockRefPtr instance. I've
inspected the uses of RefPtr<PhysicalPage> and it seems they're all
guarded by external locking. Some of it is less obvious, but this is
an area where we're making continuous headway.
This commit is contained in:
Andreas Kling 2022-08-24 15:56:26 +02:00
parent 5a804b9a1d
commit 2c72d495a3
33 changed files with 141 additions and 138 deletions
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14
Kernel/Memory/VMObject.h
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@ -8,9 +8,9 @@
#include <AK/FixedArray.h>
#include <AK/IntrusiveList.h>
#include <AK/RefPtr.h>
#include <Kernel/Forward.h>
#include <Kernel/Library/ListedRefCounted.h>
#include <Kernel/Library/LockRefPtr.h>
#include <Kernel/Library/LockWeakable.h>
#include <Kernel/Locking/Mutex.h>
#include <Kernel/Memory/Region.h>
@ -35,8 +35,8 @@ public:
size_t page_count() const { return m_physical_pages.size(); }
virtual Span<LockRefPtr<PhysicalPage> const> physical_pages() const { return m_physical_pages.span(); }
virtual Span<LockRefPtr<PhysicalPage>> physical_pages() { return m_physical_pages.span(); }
virtual Span<RefPtr<PhysicalPage> const> physical_pages() const { return m_physical_pages.span(); }
virtual Span<RefPtr<PhysicalPage>> physical_pages() { return m_physical_pages.span(); }
size_t size() const { return m_physical_pages.size() * PAGE_SIZE; }
@ -55,15 +55,15 @@ public:
}
protected:
static ErrorOr<FixedArray<LockRefPtr<PhysicalPage>>> try_create_physical_pages(size_t);
ErrorOr<FixedArray<LockRefPtr<PhysicalPage>>> try_clone_physical_pages() const;
explicit VMObject(FixedArray<LockRefPtr<PhysicalPage>>&&);
static ErrorOr<FixedArray<RefPtr<PhysicalPage>>> try_create_physical_pages(size_t);
ErrorOr<FixedArray<RefPtr<PhysicalPage>>> try_clone_physical_pages() const;
explicit VMObject(FixedArray<RefPtr<PhysicalPage>>&&);
template<typename Callback>
void for_each_region(Callback);
IntrusiveListNode<VMObject> m_list_node;
FixedArray<LockRefPtr<PhysicalPage>> m_physical_pages;
FixedArray<RefPtr<PhysicalPage>> m_physical_pages;
mutable RecursiveSpinlock m_lock { LockRank::None };