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https://github.com/RGBCube/serenity
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Kernel: Protect the Custody cache with a spinlock
Protecting it with a mutex meant that anyone unref()'ing a Custody might need to block on said mutex.
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commit
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2 changed files with 8 additions and 8 deletions
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@ -1,5 +1,5 @@
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/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2018-2022, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/Forward.h>
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#include <Kernel/KString.h>
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#include <Kernel/Library/ListedRefCounted.h>
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#include <Kernel/Locking/MutexProtected.h>
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#include <Kernel/Locking/SpinlockProtected.h>
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namespace Kernel {
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class Custody : public ListedRefCounted<Custody, LockType::Mutex> {
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class Custody : public ListedRefCounted<Custody, LockType::Spinlock> {
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public:
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static ErrorOr<NonnullRefPtr<Custody>> try_create(Custody* parent, StringView name, Inode&, int mount_flags);
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@ -44,7 +44,7 @@ private:
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public:
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using AllCustodiesList = IntrusiveList<&Custody::m_all_custodies_list_node>;
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static MutexProtected<Custody::AllCustodiesList>& all_instances();
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static SpinlockProtected<Custody::AllCustodiesList>& all_instances();
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};
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}
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