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Make FrameDeallocator::deallocate_frame unsafe #146

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Apr 11, 2020
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Make FrameDeallocator::deallocate_frame unsafe #146

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8 changes: 6 additions & 2 deletions src/structures/paging/frame_alloc.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -14,8 +14,12 @@ pub unsafe trait FrameAllocator<S: PageSize> {

/// A trait for types that can deallocate a frame of memory.
pub trait FrameDeallocator<S: PageSize> {
/// Deallocate the given frame of memory.
fn deallocate_frame(&mut self, frame: PhysFrame<S>);
/// Deallocate the given unused frame.
///
/// ## Safety
///
/// The caller must ensure that the passed frame is unused.
unsafe fn deallocate_frame(&mut self, frame: PhysFrame<S>);
}

/// Represents a physical frame that is not used for any mapping.
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