Em Wed, Aug 29, 2007 at 11:23:16AM -0700, David Miller escreveu:

From: dlezcano@fr.ibm.com
Date: Wed, 29 Aug 2007 18:41:14 +0200

quoted

When a socket is created it is sometime useful to store a specific information
for this socket.
 
This information can be for examples: 
	* a creation time
	* a pid
	* a uid/gid
	* a container identifier
	* a pointer to a more specific structure
	* ...

The following patch is a proposition to add a private anonymous pointer
field to the common part of the sock structure.

We got rid of the private field a long time ago because not only
is it not needed, it tends to get abused.

Nah, it still there, sk_protinfo, its just ax25 that uses it
(nudge(Ralf)). How do we state that a struct field is deprecated and
will be removed soon(tm)?

There is another, sk_user_data, that is used only by the rpc, pppol2tp,
iscsi, ncpfs, smbfs and dlm guys, see? We need a deprecate flag for
sk_protinfo, if not people will use it! :-)

- Arnaldo