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From: Norbert van Bolhuis <nvbolhuis@aimvalley.nl>
To: Jamie Lokier <jamie@shareable.org>
Cc: nvbolhuis@aimsys.nl,
	"linux-mtd@lists.infradead.org" <linux-mtd@lists.infradead.org>,
	Joakim Tjernlund <joakim.tjernlund@transmode.se>,
	dedekind1@gmail.com
Subject: Re: a UBIFS image makes task pdflush blocked > 120 seconds
Date: Tue, 17 Nov 2009 11:45:38 +0100	[thread overview]
Message-ID: <4B027ED2.6090302@aimvalley.nl> (raw)
In-Reply-To: <20091116232228.GI12063@shareable.org>

Jamie Lokier wrote:

> According to datasheets, the flash I'm using with cmdset_0002 supports
> multi-block erase, although I don't think the driver does at the moment.
> 
> Multi-block erase works by giving the chip a list of blocks to erase,
> or even the whole flash, and then it does them simultaneously.
> 
> Could this solve your problem?
> 
> -- Jamie
> 


I doubt it.

Afaik multi-block erasure doesn't speed up things. So for n blocks you'd still have
to wait n x block-erase-time (in this case erase-suspend whould be even more important).
Besides, currently MTD/CFI do not support this.

thanks,
Norbert.

  parent reply	other threads:[~2009-11-17 10:45 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <34637.10.10.0.184.1258202287.squirrel@intranet.aimsys.nl>
2009-11-16  8:13 ` a UBIFS image makes task pdflush blocked > 120 seconds Artem Bityutskiy
2009-11-16  8:53   ` Joakim Tjernlund
2009-11-16 23:22     ` Jamie Lokier
2009-11-17  8:31       ` Joakim Tjernlund
2009-11-17 10:45       ` Norbert van Bolhuis [this message]
     [not found] <4B012D0D.4080500@aimvalley.nl>
2009-11-16 12:12 ` Joakim Tjernlund
2009-11-17  8:25 ` Artem Bityutskiy
2009-11-17 16:25   ` Norbert van Bolhuis
2009-11-18  8:28     ` Artem Bityutskiy
2009-11-18  9:26       ` Norbert van Bolhuis
2009-11-18  9:40         ` Artem Bityutskiy
2009-11-18 10:38           ` Joakim Tjernlund
2009-11-18 10:54             ` Artem Bityutskiy
2009-11-18 10:59               ` Norbert van Bolhuis
2009-11-18 11:01               ` Joakim Tjernlund
2009-10-09 13:02 Norbert van Bolhuis
2009-10-11 13:52 ` Artem Bityutskiy
2009-10-12 10:09   ` Norbert van Bolhuis
2009-10-14  8:56     ` Artem Bityutskiy
2009-11-11 15:54       ` Norbert van Bolhuis
2009-11-13  8:20         ` Artem Bityutskiy
2009-11-13 15:09           ` Norbert van Bolhuis
2009-11-13 15:52             ` Artem Bityutskiy
2009-11-13 15:56               ` Artem Bityutskiy
2009-11-13 16:28               ` Joakim Tjernlund
2009-10-11 14:04 ` Artem Bityutskiy
2009-10-11 14:09   ` Artem Bityutskiy

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