[rrd-developers] rrd_open.c: mremap not portable, /trunk buildbroken

[Daniel.Pocock at barclayscapital.com]

> I think a better approach would be to determine the length of 
> the file in advance and just create/mmap it once.  I already 
> wrote the code that determines the size of the data portion 
> (it's in rrd_open):
>

You are right, but I didn't want to be so strict with my implementation.

It may be better to just use normal writes when a new file is created -
would you have any problem with that?

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