From: Indraneel <indraneel.m@samsung.com>
To: "David H. Lynch Jr." <dhlii@dlasys.net>
Cc: linux-mtd <linux-mtd@lists.infradead.org>
Subject: Re: Block devices
Date: Thu, 21 Feb 2008 15:10:09 +0530 [thread overview]
Message-ID: <47BD46F9.9000708@samsung.com> (raw)
In-Reply-To: <47BD22D0.9060008@dlasys.net>
David,
First things first. Don't post to multiple mailing lists at the same time.
David H. Lynch Jr. wrote:
> Sometime recently it seems to have become possible to disable the
> whole block device subsystem.
Yes it is possible. Works for me on 2.6.22-rc5.
> Though in my tests I can't quit build with it disabled.
>
> Anyway, for an embedded device this might be appealing.
> how does this interact with initramfs and flash ?
>
> Can I boot an initramfs kernel without a block device ?
Yes this is also possible. And that's why initramfs is fast.
> Can I write a filesystem driver for a flash device that does not
> require a block device ?
AFAIK, for a flash file system you need a Block Device. But you can
write a character driver to access the flash without a Block Device.
> Are their any examples of something even close ?
drivers/mtd/mtdchar.c
Regards,
Indro
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next prev parent reply other threads:[~2008-02-21 9:38 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-21 7:05 Block devices David H. Lynch Jr.
2008-02-21 9:40 ` Indraneel [this message]
2008-02-21 8:45 ` Jamie Lokier
2008-02-21 16:48 ` Christoph Hellwig
2008-02-21 16:48 ` Christoph Hellwig
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