RE: [PATCH 0/4] mtd: add mtd repartition ioctl

From: Vivek <v.dalal@samsung.com>
To: dedekind1@gmail.com, 'Roman Tereshonkov' <roman.tereshonkov@nokia.com>
Cc: linux-mtd@lists.infradead.org
Subject: RE: [PATCH 0/4] mtd: add mtd repartition ioctl
Date: Wed, 21 Jul 2010 17:14:59 +0530	[thread overview]
Message-ID: <00bd01cb28ca$2cbade20$86309a60$%dalal@samsung.com> (raw)
In-Reply-To: <1279706323.2306.2.camel@localhost>

Hi Artem

> -----Original Message-----
> From: linux-mtd-bounces@lists.infradead.org [mailto:linux-mtd-
> bounces@lists.infradead.org] On Behalf Of Artem Bityutskiy
> Sent: Wednesday, July 21, 2010 3:29 PM
> To: Roman Tereshonkov
> Cc: linux-mtd@lists.infradead.org
> Subject: Re: [PATCH 0/4] mtd: add mtd repartition ioctl
> 
> On Thu, 2010-07-08 at 08:50 +0300, Artem Bityutskiy wrote:
> > On Fri, 2010-06-18 at 13:08 +0300, Roman Tereshonkov wrote:
> > > Adding mtd master device after all partitions should provide
> > > minimum effect on the created partition enumeration.
> > >
> > > The master mtd device can be repartitioned in runtime through
> > > the mtd ioctl MTDREPARTITION. The ioctl passed argument is
> > > the set of the new partitions defined by the structures:
> > > struct mtd_partitions and struct mtd_partition_user.
> > >
> > > All at once partition configuration is used and caused by
> > > the all at once partition removing. Only unused partitions are
> deleted.
> > > If any of the partitions for given mtd device is used then user
> gets error.
> > > The care should be taken to close all applications which access
> > > the partitions.
> > >
> > > Roman Tereshonkov (4):
> > >   mtd: add new ioctl structures to be used for repartitioning
> > >   mtd: add the possibility to modify partitions in runtime
> > >   mtd: add MTDREPARTITION ioctl
> > >   mtd: create the mtd master device for given set of partitions
> > >
> > >  drivers/mtd/mtdchar.c          |  110
> +++++++++++++++++++++++++++++++++++++++-
> > >  drivers/mtd/mtdpart.c          |   45 ++++++++++++++--
> > >  drivers/mtd/onenand/omap2.c    |    8 ++-
> > >  include/linux/mtd/partitions.h |    2 +
> > >  include/mtd/mtd-abi.h          |   15 ++++++
> > >  5 files changed, 170 insertions(+), 10 deletions(-)
> >
> > I've pushed this to my l2-mtd-2.6.git / master, looks good to me.
> 
> Removed from l2-mtd-2.6 - please, address the comments from me and Arnd.

We have also developed the similar solution for run-time partitioning support; it includes 3 ioctl's(for creating,deleting,changing permissions of partitions) and the mtd utility for partitioning(which supports resizing and deleting partitions, changing permissions). 
Very shortly we are going to release that.

Regards
Vivek Dalal and Rohit H.S
> 
> --
> Best Regards,
> Artem Bityutskiy (Артём Битюцкий)
> 
> 
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