From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: junwang1234@gmail.com, linux-kernel@vger.kernel.org,
linux-security-module@vger.kernel.org
Subject: Re: Sleeping in RCU list traversal
Date: Sun, 07 Oct 2007 20:33:16 +0200 [thread overview]
Message-ID: <1191781996.5587.3.camel@lappy> (raw)
In-Reply-To: <200710080156.IFB56934.tHMLFFJSFOVOOQ@I-love.SAKURA.ne.jp>
On Mon, 2007-10-08 at 01:56 +0900, Tetsuo Handa wrote:
> So, I don't need to grab a reference to "ptr"
> because memory region pointed by "ptr" will never be kfree()ed.
> And it is legal to use "ptr" after rcu_read_unlock()
> because memory region pointed by "ptr" will never be kfree()ed.
Still think that is a very BAD (tm) idea. Esp since with the help of RCU
there is hardly any performance loss of not doing proper deletes.
next prev parent reply other threads:[~2007-10-07 18:34 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-07 19:11 Re:Sleeping in RCU list traversal Jun WANG
2007-10-07 13:26 ` Sleeping " Tetsuo Handa
2007-10-07 22:37 ` Jun WANG
2007-10-07 16:56 ` Tetsuo Handa
2007-10-07 18:33 ` Peter Zijlstra [this message]
2007-10-07 19:56 ` Tetsuo Handa
-- strict thread matches above, loose matches on Subject: below --
2007-10-03 12:37 [TOMOYO 05/15](repost) Domain transition handler functions James Morris
2007-10-03 13:04 ` Tetsuo Handa
2007-10-03 13:14 ` KaiGai Kohei
2007-10-03 13:59 ` Tetsuo Handa
2007-10-03 14:07 ` Peter Zijlstra
2007-10-07 10:38 ` Sleeping in RCU list traversal Tetsuo Handa
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