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Kernel: Don't release file-pages if volatile memory purge did it

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Jorropo 2022-08-14 23:54:24 +02:00 committed by Andreas Kling
parent 3c7b0dab0b
commit ec4b83326b
Notes: sideshowbarker 2024-07-18 00:34:07 +09:00 
Author: https://github.com/Jorropo
Commit: https://github.com/SerenityOS/serenity/commit/ec4b83326b
Pull-request: https://github.com/SerenityOS/serenity/pull/14862
1 changed files with 6 additions and 4 deletions
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4
Kernel/Memory/MemoryManager.cpp
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@ -942,6 +942,8 @@ ErrorOr<NonnullRefPtr<PhysicalPage>> MemoryManager::allocate_physical_page(Shoul
}
return IterationDecision::Continue;
});
}
if (!page) {
// Second, we look for a file-backed VMObject with clean pages.
for_each_vmobject([&](auto& vmobject) {
if (!vmobject.is_inode())
@ -956,11 +958,11 @@ ErrorOr<NonnullRefPtr<PhysicalPage>> MemoryManager::allocate_physical_page(Shoul
}
return IterationDecision::Continue;
});
}
if (!page) {
dmesgln("MM: no physical pages available");
return ENOMEM;
}
}
if (should_zero_fill == ShouldZeroFill::Yes) {
auto* ptr = quickmap_page(*page);