ahci rmmodable and shouldn't

[Pedro Francisco]

I reported this here for 2.6.35.4 -- http://lkml.org/lkml/2010/9/7/321 -- but 
still happens on latest -git.

`rmmod ahci' works even if the module is being used (`lsmod' thinks it's not 
being used but rmmoding ahci triggers filesystem erros and I've to force a 
reboot).

I've been told it's the same as plugging a cable. IMO that's what 
/sys/stuff/eject_or_similar is to, not `rmmod ahci'.

I *assume* it was caused by the split between libahci & ahci, since in 2.6.32 
`rmmod ahci' is impossible because it's marked as being in use. Didn't try 
`rmmod -f ahci' but that's not the point.

I'm posting again about this because it doesn't make sense to me the actual 
behaviour.

TIA,
-- 
Pedro
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