Messages in this thread | | | Date | Mon, 16 Jun 2003 19:03:44 +0100 | From | viro@parcelfa ... | Subject | Re: Flaw in the driver-model implementation of attributes |
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On Mon, Jun 16, 2003 at 01:54:34PM -0400, Alan Stern wrote:
> > IMO, if you don't own the object (and therefore don't know its lifetime), > > you shouldn't be adding sysfs or device model attributes of any kind to > > that object. > > That's not practical. How else can a device driver provide > device-specific configuration options or information in sysfs? In many > cases the device is owned by the bus, not the device driver.
Practical or not, when you put sysfs object into a structure, you take full responsibility for the lifetime of that structure. Period.
Note that problems exist even when kernel is non-modular. Even if code stays in place, the data getting freed under you is just as bad. And that can trivially happen without any modules. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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