Re: [PATCH] cleanup in fs/super.c (do_kern_mount())

Andries.Brouwer@cwi.nl
Mon, 3 Sep 2001 17:07:28 GMT


>>> +#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
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