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Kernel: Fix race conditions processing async device requests

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Tom 2021-02-06 16:59:32 -07:00 • committed by Andreas Kling
parent 8177f2474b
commit 5ccc3637e3
4 changed files with 23 additions and 41 deletions
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11
Kernel/Devices/Device.h
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@ -72,14 +72,11 @@ public:
NonnullRefPtr<AsyncRequestType> make_request(Args&&... args)
{
auto request = adopt(*new AsyncRequestType(*this, forward<Args>(args)...));
bool was_empty;
{
ScopedSpinLock lock(m_requests_lock);
was_empty = m_requests.is_empty();
m_requests.append(request);
}
ScopedSpinLock lock(m_requests_lock);
bool was_empty = m_requests.is_empty();
m_requests.append(request);
if (was_empty)
request->do_start({});
request->do_start(move(lock));
return request;
}