linux-kernel - Re: [PATCH] mm/mincore: allow for making sys

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Date:   Sat, 5 Jan 2019 15:39:10 -0800
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Jann Horn <jannh@...gle.com>
Cc:     Jiri Kosina <jikos@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Greg KH <gregkh@...uxfoundation.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Michal Hocko <mhocko@...e.com>, Linux-MM <linux-mm@...ck.org>,
        kernel list <linux-kernel@...r.kernel.org>,
        Linux API <linux-api@...r.kernel.org>
Subject: Re: [PATCH] mm/mincore: allow for making sys_mincore() privileged

On Sat, Jan 5, 2019 at 3:16 PM Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
>
> It goes back to forever, it looks like. I can't find a reason.

mincore() was originally added in 2.3.52pre3, it looks like. Around
2000 or so. But sadly before the BK history.

And that comment about

  "Later we can get more picky about what "in core" means precisely."

that still exists above mincore_page() goes back to the original patch.

           Linus