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From: David Woodhouse <dwmw2@infradead.org>
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To: Jonas Holmberg <jonas.holmberg@axis.com>
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Subject: Re: JFFS2 on 8MB Flash-Chip conneted to MPC850 works extremly slo w:( 
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jonas.holmberg@axis.com said:
>  Wouldn't mounting the partition read-only prevent that?

If you have a recent jffs2, yes. Older ones might do some 
garbage-collection anyway.

And if it's _strictly_ readonly then why not use cramfs on /dev/mtdblock1?

--
dwmw2