From: "matsunaga" <matsunaga_kazuhisa@yahoo.co.jp>
To: tglx@linutronix.de, "Jörn Engel" <joern@wohnheim.fh-wedel.de>
Cc: Holger Schurig <h.schurig@mn-logistik.de>
Cc: linux-mtd@lists.infradead.org
Cc: esn@cotas.dk
Cc: Jasmine Strong <jasmine@regolith.co.uk>
Subject: Re: Database on JFFS2?
Date: Wed, 16 Apr 2003 23:30:44 +0900 [thread overview]
Message-ID: <002501c30424$c3fedf20$a10486da@w0a3t0> (raw)
In-Reply-To: 200304161605.33119.tglx@linutronix.de
Hi.
On Wednesday 16 April 2003 13:13, Jörn Engel wrote:
> On Wed, 16 April 2003 13:35:50 +0200, Thomas Gleixner wrote:
> > [lots of good information]
> >
> > JFSS2 does no write on fsync, as data are already written.
>
> This is true for NOR, but how about the wbuf for NAND? How does that
> respond to sync/fsync?
Sync triggers flush_wbuf.
NAND uses a writebuffer of page_size, which is 256 / 512 Byte depending on the
chip type.
> iirc it used to ignore sync completely so people could potentially get
> into trouble if they write-sync-poweroff with <2s between write and
> poweroff.
write - sync -poweroff works on NAND. flush_wbuf is also triggered on umount.
I think that sys_sync is not supported yet, as is written in jffs2/Todo, right?
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next prev parent reply other threads:[~2003-04-16 14:31 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20030415171123.GH7721@wohnheim.fh-wedel.de>
2003-04-16 10:04 ` Database on JFFS2? Esben Nielsen
2003-04-16 11:35 ` Thomas Gleixner
2003-04-16 11:13 ` Jörn Engel
2003-04-16 14:05 ` Thomas Gleixner
2003-04-16 13:08 ` Jörn Engel
2003-04-16 14:30 ` matsunaga [this message]
2003-04-16 18:19 ` Thomas Gleixner
2003-04-17 16:02 ` matsunaga
2003-04-22 8:07 ` Esben Nielsen
2003-04-22 8:24 ` Jörn Engel
[not found] <00512BA4F9D3D311912A009027E9B8F407E4D9@NT>
2003-04-16 15:23 ` Jörn Engel
2003-04-14 8:08 Esben Nielsen
2003-04-14 23:03 ` Charles Manning
2003-04-15 8:06 ` Esben Nielsen
2003-04-15 8:51 ` Holger Schurig
2003-04-15 15:06 ` Esben Nielsen
2003-04-15 15:39 ` Jörn Engel
2003-04-15 16:11 ` Jasmine Strong
2003-04-15 16:14 ` Jörn Engel
2003-04-15 16:23 ` Jasmine Strong
2003-04-16 11:16 ` Jörn Engel
2003-04-15 9:13 ` Jörn Engel
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