netdev - RE: [PATCH v3 for-next 05/13] IB/cm: Reference count ib_cm

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Message-ID: <1828884A29C6694DAF28B7E6B8A82373A8FDC0C3@ORSMSX109.amr.corp.intel.com>
Date:	Fri, 15 May 2015 19:11:10 +0000
From:	"Hefty, Sean" <sean.hefty@...el.com>
To:	Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
	Haggai Eran <haggaie@...lanox.com>
CC:	Doug Ledford <dledford@...hat.com>,
	"linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Liran Liss <liranl@...lanox.com>,
	Guy Shapiro <guysh@...lanox.com>,
	Shachar Raindel <raindel@...lanox.com>,
	Yotam Kenneth <yotamke@...lanox.com>
Subject: RE: [PATCH v3 for-next 05/13] IB/cm: Reference count ib_cm_ids

> The lifetime if each cm_id is clearly defined:
> 
> cm_create_cm_id()
> cm_ref_id() / cm_deref_id()
> cm_destroy_id()
> 
> The fact the CM might share a listen (and only a listen) ID behind the
> scenes is not the caller's problem. That is an implementation choice,
> each caller stands alone and uses the API properly, assuming it is the
> only user of the returned cm_id.

Actually, I seriously question why the ib_cm should be modified at all for any of this.
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