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Date: Tue, 12 Dec 2023 16:39:31 -0800
From: Linus Torvalds <>
Subject: Re: [RFC PATCH v3 11/11] mseal:add documentation

On Tue, 12 Dec 2023 at 15:17, <> wrote:
> +
> +**types**: bit mask to specify the sealing types, they are:

I really want a real-life use-case for more than one bit of "don't modify".

IOW, when would you *ever* say "seal this area, but MADV_DONTNEED is ok"?

Or when would you *ever* say "seal this area, but mprotect()" is ok.

IOW, I want to know why we don't just do the BSD immutable thing, and
why we need this multi-level sealing thing.


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