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From: David Howells <dhowells@redhat.com>
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To: Linus Torvalds <torvalds@linux-foundation.org>,
        Jiri Olsa <jolsa@redhat.com>,
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Cc: dhowells@redhat.com, Andrew Morton <akpm@linux-foundation.org>,
        Eric Dumazet <eric.dumazet@gmail.com>, linux-kernel@vger.kernel.org,
        linux-security-module@vger.kernel.org
Subject: Re: [PATCH] cred - synchronize rcu before releasing cred
Date: Wed, 28 Jul 2010 13:47:06 +0100
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David Howells <dhowells@redhat.com> wrote:

> Yeah.  I think there are three alternatives:

There's a fourth alternative too:

 (4) I could try and make it so that if the RCU cleanup routine sees it with a
     non-zero usage count, then it just ignores it.  This, however, would
     require call_rcu() to be able to cope with requeueing.

David