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Kernel/MM: Set the correct memory type for mmap()s

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Make the MemoryType used by mmap() configurable by
File::vmobject_and_memory_type_for_mmap overrides (previously called
vmobject_for_mmap).

All mmap()s were previously MemoryType::Normal.
This commit is contained in:
Sönke Holz
2025-01-10 18:53:29 +01:00
parent b92907f339
commit 0d11e70cfe
15 changed files with 53 additions and 25 deletions
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15
Kernel/FileSystem/InodeFile.cpp
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@@ -81,11 +81,18 @@ ErrorOr<void> InodeFile::ioctl(OpenFileDescription& description, unsigned reques
}
}
ErrorOr<NonnullLockRefPtr<Memory::VMObject>> InodeFile::vmobject_for_mmap(Process&, Memory::VirtualRange const& range, u64& offset, bool shared)
ErrorOr<File::VMObjectAndMemoryType> InodeFile::vmobject_and_memory_type_for_mmap(Process&, Memory::VirtualRange const& range, u64& offset, bool shared)
{
if (shared)
return TRY(Memory::SharedInodeVMObject::try_create_with_inode_and_range(inode(), offset, range.size()));
return TRY(Memory::PrivateInodeVMObject::try_create_with_inode_and_range(inode(), offset, range.size()));
if (shared) {
return VMObjectAndMemoryType {
.vmobject = TRY(Memory::SharedInodeVMObject::try_create_with_inode_and_range(inode(), offset, range.size())),
.memory_type = Memory::MemoryType::Normal,
};
}
return VMObjectAndMemoryType {
.vmobject = TRY(Memory::PrivateInodeVMObject::try_create_with_inode_and_range(inode(), offset, range.size())),
.memory_type = Memory::MemoryType::Normal,
};
}
ErrorOr<NonnullOwnPtr<KString>> InodeFile::pseudo_path(OpenFileDescription const&) const