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Date:   Tue, 26 Feb 2019 10:30:09 +0100
From:   Peter Zijlstra <>
To:     "Paul E. McKenney" <>
Cc:     Andrea Parri <>,,,
        Alan Stern <>,
        Will Deacon <>,
        Boqun Feng <>,
        Nicholas Piggin <>,
        David Howells <>,
        Jade Alglave <>,
        Luc Maranget <>,
        Akira Yokosawa <>,
        Daniel Lustig <>
Subject: Re: [RFC PATCH] tools/memory-model: Remove (dep ; rfi) from ppo

On Mon, Feb 25, 2019 at 09:55:17AM -0800, Paul E. McKenney wrote:
> But if you know of any code in the Linux kernel that needs to compare
> pointers, one of which might be in the process of being freed, please
> do point me at it.

I'm having the utmost difficulty of understanding why that would be a
problem. It's just a value. Freeing memory does not affect the actual
memory or any pointers to it.


None of this makes any kind of sense.

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