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From: Vivek Goyal <vgoyal@redhat.com>
To: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Cc: Jens Axboe <axboe@kernel.dk>,
	linux kernel mailing list <linux-kernel@vger.kernel.org>,
	Corrado Zoccolo <czoccolo@gmail.com>,
	Chad Talbott <ctalbott@google.com>,
	Nauman Rafique <nauman@google.com>,
	Divyesh Shah <dpshah@google.com>,
	jmoyer@redhat.com, Shaohua Li <shaohua.li@intel.com>
Subject: Re: [PATCH 2/6 v3] cfq-iosched: Introduce cfq_entity for CFQ group
Date: Tue, 18 Jan 2011 16:20:56 -0500	[thread overview]
Message-ID: <20110118212056.GK27946@redhat.com> (raw)
In-Reply-To: <4D18536B.9090109@cn.fujitsu.com>

On Mon, Dec 27, 2010 at 04:50:51PM +0800, Gui Jianfeng wrote:

[..]
> -static struct cfq_group *cfq_rb_first_group(struct cfq_rb_root *root)
> +static struct cfq_entity *cfq_rb_first_entity(struct cfq_rb_root *root)
>  {
>  	if (!root->left)
>  		root->left = rb_first(&root->rb);
>  
>  	if (root->left)
> -		return rb_entry_cfqg(root->left);
> +		return rb_entry_entity(root->left);
>  

Why are we defining cfq_rb_first_entity(). Can't we simply use cfq_rb_first()
as introduced in first patch.

Thanks
Vivek

  reply	other threads:[~2011-01-18 21:21 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <4D180ECE.4000305@cn.fujitsu.com>
2010-12-27  8:50 ` [PATCH 1/6 v3] cfq-iosched: Introduce cfq_entity for CFQ queue Gui Jianfeng
2010-12-27  8:50 ` [PATCH 2/6 v3] cfq-iosched: Introduce cfq_entity for CFQ group Gui Jianfeng
2011-01-18 21:20   ` Vivek Goyal [this message]
2011-01-19  1:25     ` Gui Jianfeng
2011-01-23  2:15     ` Gui Jianfeng
2010-12-27  8:51 ` [PATCH 3/6 v3] cfq-iosched: Introduce vdisktime and io weight for CFQ queue Gui Jianfeng
2010-12-28  2:50   ` Shaohua Li
2010-12-28  3:59     ` Gui Jianfeng
2010-12-28  6:03       ` Shaohua Li
2010-12-28  6:59         ` Gui Jianfeng
2011-01-19 22:58   ` Vivek Goyal
2011-01-20  3:58     ` Gui Jianfeng
2011-01-20 11:09       ` Vivek Goyal
2011-01-24  4:45         ` Gui Jianfeng
2011-01-24 18:51           ` Vivek Goyal
2010-12-27  8:51 ` [PATCH 4/6 v3] cfq-iosched: Extract some common code of service tree handling for CFQ queue and CFQ group Gui Jianfeng
2010-12-27  8:51 ` [PATCH 5/6 v3] cfq-iosched: CFQ group hierarchical scheduling and use_hierarchy interface Gui Jianfeng
2011-01-24 22:52   ` Vivek Goyal
2010-12-27  8:51 ` [PATCH 6/6 v3] blkio-cgroup: Document for blkio.use_hierarchy interface Gui Jianfeng
2011-01-18 20:27   ` Vivek Goyal
2011-01-19  1:20     ` Gui Jianfeng

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