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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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parent
17de393253
commit
cb04caa18e
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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@ -13,16 +13,16 @@
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namespace Kernel {
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static Singleton<MutexProtected<Custody::AllCustodiesList>> s_all_instances;
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static Singleton<SpinlockProtected<Custody::AllCustodiesList>> s_all_instances;
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MutexProtected<Custody::AllCustodiesList>& Custody::all_instances()
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SpinlockProtected<Custody::AllCustodiesList>& Custody::all_instances()
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{
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return s_all_instances;
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}
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ErrorOr<NonnullRefPtr<Custody>> Custody::try_create(Custody* parent, StringView name, Inode& inode, int mount_flags)
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{
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return all_instances().with_exclusive([&](auto& all_custodies) -> ErrorOr<NonnullRefPtr<Custody>> {
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return all_instances().with([&](auto& all_custodies) -> ErrorOr<NonnullRefPtr<Custody>> {
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for (Custody& custody : all_custodies) {
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if (custody.parent() == parent
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&& custody.name() == name
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