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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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10
Kernel/Storage/NVMe/NVMeController.cpp
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@ -152,7 +152,7 @@ UNMAP_AFTER_INIT u32 NVMeController::get_admin_q_dept()
UNMAP_AFTER_INIT ErrorOr<void> NVMeController::identify_and_init_namespaces()
{
LockRefPtr<Memory::PhysicalPage> prp_dma_buffer;
RefPtr<Memory::PhysicalPage> prp_dma_buffer;
OwnPtr<Memory::Region> prp_dma_region;
auto namespace_data_struct = TRY(ByteBuffer::create_zeroed(NVMe_IDENTIFY_SIZE));
u32 active_namespace_list[NVMe_IDENTIFY_SIZE / sizeof(u32)];
@ -259,9 +259,9 @@ UNMAP_AFTER_INIT ErrorOr<void> NVMeController::create_admin_queue(Optional<u8> i
{
auto qdepth = get_admin_q_dept();
OwnPtr<Memory::Region> cq_dma_region;
NonnullLockRefPtrVector<Memory::PhysicalPage> cq_dma_pages;
NonnullRefPtrVector<Memory::PhysicalPage> cq_dma_pages;
OwnPtr<Memory::Region> sq_dma_region;
NonnullLockRefPtrVector<Memory::PhysicalPage> sq_dma_pages;
NonnullRefPtrVector<Memory::PhysicalPage> sq_dma_pages;
auto cq_size = round_up_to_power_of_two(CQ_SIZE(qdepth), 4096);
auto sq_size = round_up_to_power_of_two(SQ_SIZE(qdepth), 4096);
if (!reset_controller()) {
@ -300,9 +300,9 @@ UNMAP_AFTER_INIT ErrorOr<void> NVMeController::create_admin_queue(Optional<u8> i
UNMAP_AFTER_INIT ErrorOr<void> NVMeController::create_io_queue(u8 qid, Optional<u8> irq)
{
OwnPtr<Memory::Region> cq_dma_region;
NonnullLockRefPtrVector<Memory::PhysicalPage> cq_dma_pages;
NonnullRefPtrVector<Memory::PhysicalPage> cq_dma_pages;
OwnPtr<Memory::Region> sq_dma_region;
NonnullLockRefPtrVector<Memory::PhysicalPage> sq_dma_pages;
NonnullRefPtrVector<Memory::PhysicalPage> sq_dma_pages;
auto cq_size = round_up_to_power_of_two(CQ_SIZE(IO_QUEUE_SIZE), 4096);
auto sq_size = round_up_to_power_of_two(SQ_SIZE(IO_QUEUE_SIZE), 4096);