Re: [RFC] fix sysfs symlinks

[Russell King]

On Wed, Apr 14, 2004 at 08:02:27AM +0100, viro@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx wrote:
> On Wed, Apr 14, 2004 at 12:10:16PM +0530, Maneesh Soni wrote:
> > I am not sure, if pinning the kobject for the life time of symlink (dentry)
> > may result in same problems like rmmod hang which we saw in case of pinning
> > kobject for the life time of its directory (dentry).
> 
> Erm...  If rmmod _ever_ waits for refcount on kobject to reach zero, it's
> already broken.  Do you have any examples of such behaviour?

Every single module which unregisters a struct device_driver.

 *      driver_unregister - remove driver from system.
 *      @drv:   driver.
...
 *      This will block until the driver refcount reaches 0, and it is
 *      released. Only modular drivers will call this function, and we
 *      have to guarantee that it won't complete, letting the driver
 *      unload until all references are gone.

-- 
Russell King
 Linux kernel    2.6 ARM Linux   - http://www.arm.linux.org.uk/
 maintainer of:  2.6 PCMCIA      - http://pcmcia.arm.linux.org.uk/
                 2.6 Serial core
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