Messages in this thread | | | From | David Howells <> | Subject | Re: PATCH [1/1]: audit: acquire creds selectively to reduce atomic op overhead | Date | Tue, 15 Mar 2011 20:04:47 +0000 |
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Tony Jones <tonyj@suse.de> wrote:
> Agree. Also I believe it is safe to use tsk->cred directly as tsk == current > or tsk is being created by copy_process.
You can't quite access it like that without sparse throwing a warning. The pointer is marked with an __rcu attribute, so you need to use something like this:
cred = rcu_dereference_check(tsk->cred, (tsk == current || called_from_copy_process());
David
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