free(), the size to free?

[Wenda Ni <wonda.ni@xxxxxxxxx>]

The prototype is void kfree(const void *).

As the input pointer is void *, how does the kernel know the size of memory to be freed? There should be some metadata recorded under the hood, right?

Thank you for sharing your thoughts.

Cheers,

 

Wenda Ni, Ph.D.

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