[linux-lvm] FW: LVM on Linux
Ralph Jennings
ralph at oro.net
Tue Jul 17 19:23:18 UTC 2001
On Tue, Jul 17, 2001 at 05:40:08PM +0100, Joe Thornber wrote:
[snip]
> Here there's one % that we can't get rid of (we could also do chunk =
> sector - (pe_size * index)), for the simple fact that the number of
> stripes is not a power of 2, so we can't replace with shifts and masks.
>
> I just had a chat with one of the EVMS guys, EVMS *does* have this
> exact same problem.
>
> Should we restrict stripes sets to powers of 2 ?
[snip]
Why not just make a mod function?
Preceeding code not tested, but should work?
It's been a while since I wrote C code.
BTW, what is a u64 (unsigned 64bit integer) in C called?
Is there any uniform cross platform way to say it (like
u64 perhaps)?
u64 mod_64(u64 number, u64 modNum) {
while (number > modNum) {
number -= modNum;
}
return number;
}
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