From: Arnd Bergmann <arnd@arndb.de>
To: dedekind1@gmail.com
Cc: linux-embedded <linux-embedded@vger.kernel.org>,
david.wagner@free-electrons.com,
lkml <linux-kernel@vger.kernel.org>,
linux-mtd <linux-mtd@lists.infradead.org>,
Tim Bird <tim.bird@am.sony.com>,
David Woodhouse <dwmw2@infradead.org>
Subject: Re: [PATCHv3] UBI: new module ubiblk: block layer on top of UBI
Date: Thu, 8 Sep 2011 17:26:00 +0200 [thread overview]
Message-ID: <201109081726.00769.arnd@arndb.de> (raw)
In-Reply-To: <1315282208.19067.24.camel@sauron>
On Tuesday 06 September 2011, Artem Bityutskiy wrote:
> Not sure about the bus approach - David, could you take a look at it
> please? If we can handle errors there - then we could indeed re-use the
> UBI control device. We could even re-use the ioctl data structures for
> UBI volumes creation/removal - we have plenty of space there reserved
> for future extensions.
I would generally recommend using new ioctl commands. ioctl numbers
are cheap, but complexity in data structures is not, because every
user who wants to deal with the data structures has to understand
them. Also, changing the ABI is always tricky since you have to
provide backward and forwards compatibility with existing kernels
and with existing user space.
Arnd
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next prev parent reply other threads:[~2011-09-08 15:26 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1308922482-14967-1-git-send-email-david.wagner@free-electrons.com>
2011-06-28 15:24 ` [RFC PATCHv2] UBI: new module ubiblk: block layer on top of UBI david.wagner
2011-06-29 6:54 ` Artem Bityutskiy
2011-07-26 12:27 ` [PATCH] " David Wagner
2011-07-26 12:34 ` Christoph Hellwig
2011-07-26 12:58 ` David Wagner
2011-07-28 6:14 ` Artem Bityutskiy
2011-08-15 11:56 ` Artem Bityutskiy
2011-08-17 13:17 ` [PATCHv3] " david.wagner
2011-08-17 14:20 ` [PATCH] Tools for controling ubiblk David Wagner
2011-08-22 8:17 ` Artem Bityutskiy
2011-08-22 7:39 ` [PATCHv3] UBI: new module ubiblk: block layer on top of UBI Artem Bityutskiy
2011-08-22 7:42 ` Artem Bityutskiy
2011-08-24 16:23 ` Arnd Bergmann
2011-08-25 7:06 ` Artem Bityutskiy
2011-08-25 15:12 ` Arnd Bergmann
2011-09-01 12:55 ` David Wagner
2011-09-06 3:44 ` Artem Bityutskiy
2011-09-06 4:10 ` Artem Bityutskiy
2011-09-06 4:29 ` Artem Bityutskiy
2011-09-08 15:26 ` Arnd Bergmann [this message]
2011-09-09 11:53 ` Artem Bityutskiy
2011-09-09 12:02 ` Artem Bityutskiy
2011-09-09 14:25 ` Arnd Bergmann
2011-09-09 15:27 ` Artem Bityutskiy
2011-09-09 14:41 ` David Wagner
2011-09-09 14:51 ` Arnd Bergmann
2011-09-11 10:18 ` Artem Bityutskiy
2011-09-11 10:35 ` David Wagner
2011-08-24 16:15 ` [PATCHv4] " david.wagner
2011-08-24 16:21 ` [PATCH] document ubiblk's usage of the same ioctl magic as a part " David Wagner
2011-09-06 4:58 ` Artem Bityutskiy
2011-09-06 4:55 ` [PATCHv4] UBI: new module ubiblk: block layer on top " Artem Bityutskiy
2011-09-12 9:51 ` [PATCHv5] " David Wagner
2011-09-19 4:50 ` Artem Bityutskiy
2011-09-22 7:58 ` [PATCHv6] " David Wagner
2011-09-23 10:58 ` Artem Bityutskiy
2011-09-26 12:58 ` David Wagner
2011-09-26 9:17 ` Ricard Wanderlof
2011-09-26 12:38 ` [PATCHv7] " David Wagner
2011-09-26 13:20 ` Artem Bityutskiy
2011-09-26 14:25 ` [PATCHv8] " David Wagner
2011-09-26 14:36 ` Artem Bityutskiy
2011-09-26 14:40 ` [PATCHv9] " David Wagner
2011-10-01 14:08 ` Artem Bityutskiy
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