Userspace write to UBI partitions

[Atlant Schmidt]

All:

  But there are times when you really want a block erased
  and erased NOW; in that case, "unmap" isn't what you
  want as it only schedules the PEB for erasure at some
  future time. And if a power cut intervenes, that
  scheduling for erasure may be lost and the ultimate
  erasure may not take place for a long, long time.

  So if you really intended to destroy the data, "unmap"
  is not the correct function to call.

                              Atlant

-----Original Message-----
From: linux-mtd-bounces at lists.infradead.org [mailto:linux-mtd-bounces at lists.infradead.org] On Behalf Of Ricard Wanderlof
Sent: Wednesday, February 08, 2012 07:19
To: Artem Bityutskiy
Cc: Ricard Wanderlof; Linux mtd; Shmulik Ladkani
Subject: Re: Userspace write to UBI partitions


> >  In the meantime, there doesn't seem to be an ioctl for erasing
> > blocks?
>
> In UBI it is called "unmap" instead of "erase":
>
> http://www.linux-mtd.infradead.org/doc/ubi.html#L_unmap

Thanks. I've been staring at the UBI page for too long now I guess, didn't
realize that was what I should have been looking for...

/Ricard
--
Ricard Wolf Wanderlöf                           ricardw(at)axis.com
Axis Communications AB, Lund, Sweden            www.axis.com
Phone +46 46 272 2016                           Fax +46 46 13 61 30

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