Re: Support for Large Block Devices

[Peter Chubb]

>>>>> "Maciej" == Maciej Soltysiak <solt2@xxxxxxxxxxxxxxxxx> writes:

Maciej> Hi, I was wondering... Why is "Support for Large Block
Maciej> Devices" still an option?

Maciej> Shouldn't it be compiled in always?  Or maybe there are some
Maciej> cons like incompatibility or something?

It's not compiled in always on 32-bit platforms, because
     1.  Most people don't have more than 2TB in a single block device
     2.  64-bit sizes mean increased size of various structures (i.e.,
         less cache-friendly), and slightly slower operations.

On 64-bit platforms it *is* always enabled.
-- 
Dr Peter Chubb  http://www.gelato.unsw.edu.au  peterc AT gelato.unsw.edu.au
The technical we do immediately,  the political takes *forever*
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