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Subject: RE: Userspace write to UBI partitions
From: Artem Bityutskiy <dedekind1@gmail.com>
To: Atlant Schmidt <aschmidt@dekaresearch.com>
Date: Wed, 08 Feb 2012 15:58:06 +0200
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Cc: Linux mtd <linux-mtd@lists.infradead.org>,
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On Wed, 2012-02-08 at 08:49 -0500, Atlant Schmidt wrote:
> All:
>=20
>   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.
>=20
>   So if you really intended to destroy the data, "unmap"
>   is not the correct function to call.

In this case you should first unmap and than map:

http://www.linux-mtd.infradead.org/doc/ubi.html#L_map

--=20
Best Regards,
Artem Bityutskiy

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