linux-kernel - Re: [PATCH] block: export SSD/non-rotational queue flag through sysfs

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Message-ID: <49628720.6050101@yahoo.com>
Date:	Mon, 05 Jan 2009 22:18:08 +0000
From:	Sitsofe Wheeler <sitsofe@...oo.com>
To:	Kay Sievers <kay.sievers@...y.org>
CC:	Jens Axboe <jens.axboe@...cle.com>,
	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
	linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org,
	Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: Re: [PATCH] block: export SSD/non-rotational queue flag through sysfs

Kay Sievers wrote:
> On Mon, Jan 5, 2009 at 19:54, Jens Axboe <jens.axboe@...cle.com> wrote:
>> On Mon, Jan 05 2009, Bartlomiej Zolnierkiewicz wrote:
> 
>>> +static struct queue_sysfs_entry queue_nonrot_entry = {
>>> +     .attr = {.name = "nonrot", .mode = S_IRUGO | S_IWUSR },
>>> +     .show = queue_nonrot_show,
>>> +     .store = queue_nonrot_store,
>>> +};
>>> +
>> Lets please use a better name for export reasons, non-rotational is a
>> lot better. Nobody will know what nonrot means :-)
> 
> What's that negation good for? Can't we just have "rotational", like
> we have "removable" and not "non-removable"? :)

How about cheapseek? fastrandom? flash? ssd? However the internal flag 
is called QUEUE_FLAG_NONROT so it kind of makes sense just to leave it 
as nonrot...
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