linux-kernel - Re: [PATCH] UBI: new module ubiblk: block layer on top of UBI

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Message-ID: <4E09EA52.8090006@parrot.com>
Date:	Tue, 28 Jun 2011 16:50:58 +0200
From:	Matthieu CASTET <matthieu.castet@...rot.com>
To:	"dedekind1@...il.com" <dedekind1@...il.com>
CC:	"david.wagner@...e-electrons.com" <david.wagner@...e-electrons.com>,
	"dwmw2@...radead.org" <dwmw2@...radead.org>,
	"linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] UBI: new module ubiblk: block layer on top of UBI

Hi,

Artem Bityutskiy a écrit :
> On Fri, 2011-06-24 at 15:34 +0200, david.wagner@...e-electrons.com
> wrote:
>> +	/* Stolen from mtd_blkdevs.c */
>> +	/* Create processing thread */
>> +	dev->thread = kthread_run(ubi_ubiblk_thread, dev, "%s%d_%d",
>> +				  "kubiblkd", dev->ubi_num, dev->vol_id);
>> +	if (IS_ERR(dev->thread)) {
>> +		ret = PTR_ERR(dev->thread);
>> +		goto out_thread;
>> +	}
> 
> Why we need a kernel thread? Could you please describe when exactly it
> is needed and why we cannot avoid having it?
Also what are the advantage against gluebi + mtdblock_ro ?
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