linux-kernel - Re: [PATCH 4/4] mm,hugetlb: compute page_size

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Message-ID: <20170222160319.GB5126@linux-80c1.suse>
Date:   Wed, 22 Feb 2017 08:03:19 -0800
From:   Davidlohr Bueso <dave@...olabs.net>
To:     Michal Hocko <mhocko@...nel.org>
Cc:     akpm@...ux-foundation.org, manfred@...orfullife.com,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        Davidlohr Bueso <dbueso@...e.de>
Subject: Re: [PATCH 4/4] mm,hugetlb: compute page_size_log properly

On Mon, 20 Feb 2017, Michal Hocko wrote:

>I am not sure I understand.
>$ git grep SHM_HUGE_ include/uapi/
>$
>
>So there doesn't seem to be any user visible constant. The man page
>mentiones is but I do not really see how is the userspace supposed to
>use it.

Yeah, userspace is not supposed to use it, it's just there because
the manpage describes kernel internals. I'm not really a big fan
of touching manpages (and ipc is already full of corner cases),
but I guess nobody can really complain if we rip out all the
SHM_HUGE_ stuff.

Thanks,
Davidlohr