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Date:	Fri, 16 Mar 2007 14:41:04 -0700 (PDT)
From:	David Miller <>
Subject: Re: [PATCH] fib_hash removal

From: Robert Olsson <>
Date: Fri, 16 Mar 2007 13:38:31 +0100

> Hello, Just discussed this Patrick...
> We have two users of trie_leaf_remove, fn_trie_flush and fn_trie_delete 
> both are holding RTNL. So there shouldn't be need for this preempt stuff. 
> This is assumed to a leftover from an older RCU-take.
> > Mhh .. I think I just remembered something - me incorrectly suggesting
> > to add it there while we were talking about this at OLS :) IIRC the
> > idea was to make sure tnode_free (which at that time didn't use
> > call_rcu) wouldn't free memory while still in use in a rcu read-side
> > critical section. It should have been synchronize_rcu of course,
> > but with tnode_free using call_rcu it seems to be completely
> > unnecessary. So I guess we can simply remove it.
> Signed-off-by: Patrick McHardy <>
> Signed-off-by: Robert Olsson <>

Applied, thanks a lot.
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