Re: [NETLINK] cb_lock does not needs ref count on sk

["David S. Miller" <davem@xxxxxxxxxxxxx>]

On Fri, 1 Apr 2005 19:36:33 +1000
Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> wrote:

> Here is a little optimisation for the cb_lock used by netlink_dump.
> While fixing that race earlier, I noticed that the reference count
> held by cb_lock is completely useless.  The reason is that in order
> to obtain the protection of the reference count, you have to take
> the cb_lock.  But the only way to take the cb_lock is through
> dereferencing the socket.
> 
> That is, you must already possess a reference count on the socket
> before you can take advantage of the reference count held by cb_lock.
> As a corollary, we can remve the reference count held by the cb_lock.
> 
> Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>

Looks good, applied.