linux-kernel - Re: ahci rmmodable and shouldn't

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Message-ID: <4C933A8F.2080305@gmail.com>
Date:	Fri, 17 Sep 2010 11:53:19 +0200
From:	Tejun Heo <htejun@...il.com>
To:	Randy Dunlap <rdunlap@...otime.net>
CC:	Pedro Francisco <pedrogfrancisco@...il.com>,
	linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org
Subject: Re: ahci rmmodable and shouldn't

Hello,

On 09/16/2010 11:58 PM, Randy Dunlap wrote:
>> `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.

Just don't rmmod a module which is serving a live filesystem.  Why
does it even matter?

-- 
tejun
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