sys_swapon & NFS question

Hi there,

why sys_swapon doesn't work on files via NFS? S_ISREG(..) gives me 0, so bad_swap jmp take place & EINVAL is what i receive. Does anyone of you know why, cause i can't figure this out? ( politics: because my "swap host" may be switched off at any time? )

Maciej Hrebien