linux-kernel - Re: [PATCH 1/2] driver: xen-blkfront: move talk_to

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Message-ID: <5555D4F8.40701@citrix.com>
Date:	Fri, 15 May 2015 13:14:00 +0200
From:	Roger Pau Monné <roger.pau@...rix.com>
To:	Bob Liu <bob.liu@...cle.com>
CC:	<xen-devel@...ts.xen.org>, <david.vrabel@...rix.com>,
	<justing@...ctralogic.com>, <konrad.wilk@...cle.com>,
	<paul.durrant@...rix.com>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] driver: xen-blkfront: move talk_to_blkback to the
 correct place

El 15/05/15 a les 13.03, Bob Liu ha escrit:
> 
> On 05/15/2015 06:01 PM, Roger Pau Monné wrote:
>> El 12/05/15 a les 13.01, Bob Liu ha escrit:
>>> The right place for talk_to_blkback() to query backend features and transport
>>> parameters is after backend entered XenbusStateInitWait. There is no problem
>>
>> talk_to_blkback doesn't gather any backend features, it just publishes
>> the features supported by the frontend, which AFAICT can be done at any
> 
> 1) But talk_tlkback will also allocate and initialize the request ring which
> should be done after backend entered XenbusStateInitWait.

Maybe setup_blkring should be moved to a more suitable location instead
of moving the whole function?

Roger.

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