linux-kernel - Re: [PATCH 17/21] Percpu tag allocator

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Message-ID: <20130514150335.GA6795@mtj.dyndns.org>
Date:	Tue, 14 May 2013 08:03:35 -0700
From:	Tejun Heo <tj@...nel.org>
To:	Kent Overstreet <koverstreet@...gle.com>
Cc:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-aio@...ck.org, akpm@...ux-foundation.org,
	Oleg Nesterov <oleg@...hat.com>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Ingo Molnar <mingo@...hat.com>
Subject: Re: [PATCH 17/21] Percpu tag allocator

On Mon, May 13, 2013 at 06:18:54PM -0700, Kent Overstreet wrote:
> +struct tag_pool {
> +	unsigned			watermark;
> +	unsigned			nr_tags;
> +
> +	struct tag_cpu_freelist		*tag_cpu;
> +
> +	struct {
> +		/* Global freelist */
> +		unsigned		nr_free;
> +		unsigned		*free;
> +		spinlock_t		lock;
> +		struct list_head	wait;
> +	} ____cacheline_aligned;
> +};

Come on, Kent.  No comment at all in the whole posting and no
justification for the patch or explanation of use cases?

-- 
tejun
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