From: Thomas Gleixner <tglx@linutronix.de>
To: manningc2@actrix.gen.nz, David Woodhouse <dwmw2@infradead.org>,
Dave Ellis <DGE@sixnetio.com>
Cc: 'Ken Offer' <koffer@arlut.utexas.edu>,
"'linux-mtd@lists.infradead.org'" <linux-mtd@lists.infradead.org>
Subject: Re: Problem: 51MB partition max size on jffs2
Date: Wed, 04 Dec 2002 20:10:51 +0100 [thread overview]
Message-ID: <200212042010.51999.tglx@linutronix.de> (raw)
In-Reply-To: <20021204190914.6D7CD48FD@tiger.actrix.co.nz>
On Wednesday 04 December 2002 20:04, Charles Manning wrote:
> On Thu, 05 Dec 2002 08:01, Thomas Gleixner wrote:
> > On Wednesday 04 December 2002 19:46, David Woodhouse wrote:
> > > DGE@sixnetio.com said:
> > > > kmalloc() is limited to 128K and the 128MB Flash needs more than
> > > > twice that,
> > > >
> > > > so I tried vmalloc() and it seems to be OK (at least with PPC 2.4.18
> > > > patched for the new MTD code). Does anyone know if this change is
> > > > safe?
> > >
> > > You need to change the corresponding kfree() to vfree().
> >
> > That's right. In actual CVS-code this problem is solved by building
> > virtual blocks of 2,4 or 8 physical blocks.
>
> Does this have an impact on performance?
Not at all. It just consumes less memory. Maybe garbage collect is a little
bit slower, but I did not notice a remarkable change.
--
Thomas
____________________________________________________
linutronix - competence in embedded & realtime linux
http://www.linutronix.de
mail: tglx@linutronix.de
next prev parent reply other threads:[~2002-12-04 18:42 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-04 18:44 Problem: 51MB partition max size on jffs2 Dave Ellis
2002-12-04 18:46 ` David Woodhouse
2002-12-04 19:01 ` Thomas Gleixner
2002-12-04 19:04 ` Charles Manning
2002-12-04 19:10 ` Thomas Gleixner [this message]
-- strict thread matches above, loose matches on Subject: below --
2002-12-06 21:00 Dave Ellis
2002-12-04 20:58 Dave Ellis
2002-12-04 16:54 Ken Offer
2002-12-04 17:47 ` Thomas Gleixner
2002-12-04 22:00 ` Ken Offer
2002-12-04 22:02 ` Thomas Gleixner
2002-12-04 23:08 ` Ken Offer
2002-12-04 23:20 ` Thomas Gleixner
2002-12-05 17:53 ` Ken Offer
2002-12-04 18:41 ` David Woodhouse
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