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Date:   Thu, 2 Feb 2023 02:23:53 -0800
From:   Christoph Hellwig <hch@infradead.org>
To:     Yafang Shao <laoar.shao@gmail.com>
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Subject: Re: [PATCH bpf-next 3/7] mm: vmalloc: introduce vsize()
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On Thu, Feb 02, 2023 at 01:41:54AM +0000, Yafang Shao wrote:
> Introduce a helper to report full size of underlying allocation of a
> vmalloc'ed address.

What is the use case for it?