linux-kernel - Re: [PATCH 1/3] Infiniband: make ehca_pd use struct pid pointer rather than pid

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Message-ID: <adaprtsf1ww.fsf@cisco.com>
Date:	Tue, 18 Mar 2008 09:10:55 -0700
From:	Roland Dreier <rdreier@...co.com>
To:	Hoang-Nam Nguyen <HNGUYEN@...ibm.com>
Cc:	Christoph Raisch <raisch@...ibm.com>,
	general@...ts.openfabrics.org,
	Hal Rosenstock <hal.rosenstock@...il.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Roland Dreier <rolandd@...co.com>,
	Sean Hefty <sean.hefty@...el.com>,
	Pavel Emelyanov <xemul@...nvz.org>
Subject: Re: [PATCH 1/3] Infiniband: make ehca_pd use struct pid pointer rather than pid_t

 > Reason for above checking is to prevent a child process releasing
 > a resource that the parent process has created and still wants to use.
 > Do you think that's something we can generalize into ib_core?

Clearly if we want that check then it should be in the core uverbs
module.  But I'm not sure why we would want that check -- I don't see
any realistic scenario where that would cause problems, and it seems
at least as likely that the check would break an app that
intentionally does something clever.

 - R.

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