Re: [PATCH] Symlink /sys/class/block to /sys/block

[Greg KH <gregkh@suse.de>]

On Wed, Feb 23, 2005 at 09:43:35AM +0000, Malcolm Rowe wrote:
> Greg KH writes: 
> 
> >>Following the discussion in [1], the attached patch creates 
> >>/sys/class/block
> >>as a symlink to /sys/block. The patch applies to 2.6.11-rc4-bk7.  
> >>
> >>Please cc: me on any replies - I'm not subscribed to the mailing list. 
> >Hm, your patch is linewrapped, and can't be applied :(
> 
> Bah, and I did send it to myself first, but I guess my mailer un-flowed it 
> for me :-(.  I'll try to find a better mailer. 
> 
> >But more importantly:
> >>static void disk_release(struct kobject * kobj)
> >
> >Did you try to remove a disk (like a usb device) and see what happens
> >here?  Hint, this isn't the proper place to remove the symlink...
> 
> Er, yeah. Oops. 
> 
> *Is* there a sensible place to remove the symlink from, though?  Nobody 
> seems to call subsystem_unregister(&block_subsys), which is the place I'd 
> expect to add a call to, and I can't see anything that's otherwise 
> obvious... 

If the subsystem is never unregistered, then don't worry about undoing
the symlink.

thanks,

greg k-h