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SubjectRe: File BlockSize
> > This sounds like fairly severe memory fragmentation, which seems more
> > worrisome to me than blocksize constraints. Should I look into that?
> Sorry for being dense, but I don't see why an 8 kB block would
> need to occupy 2 contiguous pages in ram.

Because all the kernel code knows that you can add a constant to the
base of a buffer to get anywhere in that block. Also the one buffer
per two page case isnt handled either

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