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Subject: Re: [patch] IDE driver model update
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Alexander Viro <viro@math.psu.edu>
Cc: Patrick Mochel <mochel@osdl.org>, Linus Torvalds <torvalds@transmeta.com>,
       Andre Hedrick <andre@linux-ide.org>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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On Tue, 2002-10-08 at 03:17, Alexander Viro wrote:
> _ALL_ buses that have driverfs support (IDE, SCSI, USB, PCI) have their
> own rules for lifetimes of their structures.  And that's not likely to
> change - these objects belong to drivers and in some cases (IDE) are
> not even allocated dynamically - they are reused if nothing is holding
> them.

IDE objects can also outlast the hardware - consider an active mount on
an ejected pcmcia card. Right now we don't do the right stuff to
reconnect that on re-insert but one day we may need to. As it is we keep
the instance around to avoid crashes

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