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Kernel: Add a comment about what the MM lock protects

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Andreas Kling 2022-08-18 17:36:54 +02:00
parent 75348bdfd3
commit c14dda14c4
1 changed files with 5 additions and 0 deletions
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5
Kernel/Memory/MemoryManager.cpp
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@ -58,6 +58,11 @@ ErrorOr<FlatPtr> page_round_up(FlatPtr x)
// run. If we do, then Singleton would get re-initialized, causing // run. If we do, then Singleton would get re-initialized, causing
// the memory manager to be initialized twice! // the memory manager to be initialized twice!
static MemoryManager* s_the; static MemoryManager* s_the;
// The MM lock protects:
// - all data members of MemoryManager
// - the quickmap mechanism
// - the PTE/PDE mapping mechanism
RecursiveSpinlock s_mm_lock { LockRank::MemoryManager }; RecursiveSpinlock s_mm_lock { LockRank::MemoryManager };
MemoryManager& MemoryManager::the() MemoryManager& MemoryManager::the()