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Date: Wed, 14 Dec 2011 10:29:57 +0100
From: Matthieu CASTET <matthieu.castet@parrot.com>
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To: "katsuki.uwatoko@toshiba.co.jp" <katsuki.uwatoko@toshiba.co.jp>
Subject: Re: [PATCH] [MTD] NAND : SFTL (Simple Flash Transration Layer)
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katsuki.uwatoko@toshiba.co.jp a écrit :
> This is a new Flash Translation Layer for NAND Flash on mtd.
> 
> mtd: SFTL (Simple Flash Translation Layer)
> 
> Introduction
> ------------
> 
> SFTL is a flash translation layer for NAND Flash on mtd_blkdevs
> interface.  This is mainly-useful for read-oriented use (ex. a storage
> for a boot image) because this provides simple wear-leveling and
> scrubbing. The features are:
> 
>  * sftl provides wear-leveling (not static wear-leveling) and scrubbing.
>  * sftl has one erase block size cache.
>  * sftl uses 6 bytes in OOB for a logical address, status, version.
>  * the erase block scan at init is fast.
>  * a unit of read/write from/to MTD is an erase block.
> 
What's the advantage over ubi and/or mtd over ubi.


Matthieu