linux-kernel - Re: Important for fs devs: rcu-walk merged upstream

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Message-ID: <20110111010800.GE4879@mail.oracle.com>
Date:	Mon, 10 Jan 2011 17:08:01 -0800
From:	Joel Becker <jlbec@...lplan.org>
To:	Nick Piggin <npiggin@...il.com>
Cc:	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	linux-kernel@...r.kernel.org
Subject: Re: Important for fs devs: rcu-walk merged upstream

On Sat, Jan 08, 2011 at 01:54:47PM +1100, Nick Piggin wrote:
> The rcu-walk stuff can be more tricky for your filesystem
> to take advantage of.
> 
> If you supply a .d_revalidate, .permission, or .check_acl,
> then path walking is going to be slow and unscalable for
> you.

	Do you mean "as slow and unscalable as it has always been" or
"even slower now"?  A quick look suggests the former, but I wanted to be
sure.

Joel

-- 

"But all my words come back to me
 In shades of mediocrity.
 Like emptiness in harmony
 I need someone to comfort me."

			http://www.jlbec.org/
			jlbec@...lplan.org
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