linux-ext4 - Re: [PATCH] percpu_counter: Put a reasonable upper bound on percpu_counter

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Message-ID: <20110906164458.GI18425@mtj.dyndns.org>
Date:	Wed, 7 Sep 2011 01:44:58 +0900
From:	Tejun Heo <tj@...nel.org>
To:	Theodore Tso <tytso@....EDU>
Cc:	Anton Blanchard <anton@...ba.org>,
	Eric Dumazet <eric.dumazet@...il.com>,
	adilger.kernel@...ger.ca, linux-ext4@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] percpu_counter: Put a reasonable upper bound on
 percpu_counter_batch

On Tue, Sep 06, 2011 at 09:30:50AM -0400, Theodore Tso wrote:
> >> I chose to cap percpu_counter_batch at 1024 as a conservative first
> >> step, but we may want to reduce it further based on further benchmarking.
> >> 
> >> Signed-off-by: Anton Blanchard <anton@...ba.org>
> > 
> > Applied to percpu/for-3.2.
> 
> Um, this was an ext4 patch and I pointed out it could cause problems.  (Specifically, data loss…)

Ah okay, I thought you were talking about the first patch only.
Reverting for now.

Thanks.

-- 
tejun
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