linux-ext4 - Re: [PATCH v2 2/2] block: share request flush fields with elevator

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Message-ID: <4D550AAC.1090708@fusionio.com>
Date:	Fri, 11 Feb 2011 11:08:44 +0100
From:	Jens Axboe <jaxboe@...ionio.com>
To:	Mike Snitzer <snitzer@...hat.com>
CC:	Tejun Heo <tj@...nel.org>, "tytso@....edu" <tytso@....edu>,
	"djwong@...ibm.com" <djwong@...ibm.com>,
	"shli@...nel.org" <shli@...nel.org>,
	"neilb@...e.de" <neilb@...e.de>,
	"adilger.kernel@...ger.ca" <adilger.kernel@...ger.ca>,
	"jack@...e.cz" <jack@...e.cz>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"kmannth@...ibm.com" <kmannth@...ibm.com>,
	"cmm@...ibm.com" <cmm@...ibm.com>,
	"linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>,
	"rwheeler@...hat.com" <rwheeler@...hat.com>,
	"hch@....de" <hch@....de>, "josef@...hat.com" <josef@...hat.com>,
	"jmoyer@...hat.com" <jmoyer@...hat.com>,
	"vgoyal@...hat.com" <vgoyal@...hat.com>
Subject: Re: [PATCH v2 2/2] block: share request flush fields with  elevator_private

On 2011-02-01 23:46, Mike Snitzer wrote:
> Flush requests are never put on the IO scheduler.  Convert request
> structure's elevator_private* into an array and have the flush fields
> share a union with it.
> 
> Reclaim the space lost in 'struct request' by moving 'completion_data'
> back in the union with 'rb_node'.

Thanks Mike, I've merged this one and v5 1/2 as well.

-- 
Jens Axboe

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