linux-kernel - Re: [PATCH 4/6] KEYS: Add garbage collection for dead, revoked and expired keys.

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Message-ID: <20090804223301.GA16794@us.ibm.com>
Date:	Tue, 4 Aug 2009 17:33:01 -0500
From:	"Serge E. Hallyn" <serue@...ibm.com>
To:	David Howells <dhowells@...hat.com>
Cc:	torvalds@...l.org, akpm@...ux-foundation.org, jmorris@...ei.org,
	linux-kernel@...r.kernel.org, linux-security-module@...r.kernel.org
Subject: Re: [PATCH 4/6] KEYS: Add garbage collection for dead, revoked and
	expired keys.

Quoting David Howells (dhowells@...hat.com):
> Serge E. Hallyn <serue@...ibm.com> wrote:
> 
> > This won't require keyring->sem?
> 
> Why should it?  A keyring merely points at a key, and if you follow this line
> of argument, then every keyring pointing at a key would have to be locked.

I see - so I could have the same dead key in 2 keyrings, recreate it in the
one ring, and it will be reactivated in both keyrings?

Ok, then that check (my original comment) is in fact needed :)

Thanks for indulging me.

-serge
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