From: Andries.Brouwer@cwi.nl
To: Andries.Brouwer@cwi.nl, viro@math.psu.edu
Cc: linux-kernel@vger.kernel.org, torvalds@transmeta.com
Subject: Re: [PATCH] cleanup in fs/super.c (do_kern_mount())
Date: Mon, 3 Sep 2001 17:07:28 GMT [thread overview]
Message-ID: <200109031707.RAA36835@vlet.cwi.nl> (raw)
>>> +#define MS_NOUSER (1<<31)
>> a pity to waste a bit
> No, it's not useful for userland ;-) For internal use.
Hmm. Bad style, but acceptable if you never do it again :-)
[I mean: as soon as we start using more than 16 mount flags
we have the top 16 bits, but only 2^16 - 1 values are available
since 0xc0ed is a conventional value; now if the bits are
completely independent then it is strange to forbid one
particular random combination, and it is cleaner to use
only 15 bits with 2^15 values. If the top bit is never used
from user space then it is available for internal purposes.]
Andries
next reply other threads:[~2001-09-03 17:08 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-09-03 17:07 Andries.Brouwer [this message]
-- strict thread matches above, loose matches on Subject: below --
2001-09-03 13:53 [PATCH] cleanup in fs/super.c (do_kern_mount()) Andries.Brouwer
2001-09-03 16:53 ` Alexander Viro
2001-09-03 3:46 Alexander Viro
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