From: David Woodhouse <dwmw2@redhat.com>
To: Adil EL YOUSSEFI <adilos2@yahoo.com>
Cc: linux-mtd@lists.infradead.org
Subject: Re: A couple of questions
Date: Wed, 10 Oct 2001 13:11:02 +0100 [thread overview]
Message-ID: <21379.1002715862@redhat.com> (raw)
In-Reply-To: <20011010112839.95341.qmail@web11503.mail.yahoo.com>
adilos2@yahoo.com said:
> -> Under what license it is released. My boss wants to
> know if he would have to pay in order to put JFFS2 in our product.
Under what licence is your product? JFFS2 is under a dual licence - both
GPL for compatibility with the Linux kernel, and RHEPL for use in eCos.
> -> We are using a flash device with different sector sizes ( 1*32k,
> 2*16k,1*64k and the others are 128k ), What size should the JFFS2
> reserved sectors have then ?
128KiB - the 'major' erase size.
> -> If JFFS2 is used without enabling compression, will there still be
> corner cases in GC requiring 5 reserved sectors and not 2.
Probably not. To be honest, it probably wouldn't happen even _with_
compression - I just don't like releasing software that'll 'probably' work
:)
> -> Why can't JFFS2 be used on Compact flashes ?
Technically, it can - we now have a 'blkmtd' driver which uses any block
device as backing store for an MTD device - so it can use any hard drive.
At the moment, it's painfully slow. Checkpointing ought to fix that, but
nobody's currently working on implementing that.
--
dwmw2
next prev parent reply other threads:[~2001-10-10 12:01 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-10 11:28 A couple of questions Adil EL YOUSSEFI
2001-10-10 12:11 ` David Woodhouse [this message]
2001-10-10 13:17 ` JFFS2 performance Joakim Tjernlund
2001-10-10 23:01 ` dennis noermann
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