[linux-lvm] When Do I need to install the VFS patch?

[John DeFranco <defranco cup hp com>]

Hi,

When do I need to apply the linux-2.4.X-VFS-lock.patch?
Is it only required if I'm going to do snapshots and/or
use reiserfs? I could not find any documentation that
complete described this.

Thanks!
-- 
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Cheers
   -jdf