linux-kernel - Re: [PATCH] fs: add FD_CLOFORK and O

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Message-ID: <BANLkTiktdStx1e5vHk7AqO+pYVXm-PjsQg@mail.gmail.com>
Date:	Sat, 7 May 2011 13:41:59 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Changli Gao <xiaosuo@...il.com>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Matthew Wilcox <matthew@....cx>, Arnd Bergmann <arnd@...db.de>,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arch@...r.kernel.org
Subject: Re: [PATCH] fs: add FD_CLOFORK and O_CLOFORK

On Sat, May 7, 2011 at 08:29, Eric Dumazet <eric.dumazet@...il.com> wrote:
> I am sure the following idea already was discussed in the past :
>
> Embed the close_on_exec / close_on_close bits in the low order bits of
> file pointers.

How many low order bits do you expect to have in file pointers?
Are files allocated using kmalloc(), or do they just obey the alignment of the
individual members of a file struct? In the latter case, you'll have onlyv1 low
order bit to play with on m68k.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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