From: David Woodhouse <dwmw2@infradead.org>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Greg Ungerer <gerg@snapgear.com>,
linux-kernel@vger.kernel.org,
David McCullough <davidm@snapgear.com>
Subject: Re: [PATCH]: uClinux (MMU-less) patches against 2.5.28
Date: Fri, 26 Jul 2002 17:01:05 +0100 [thread overview]
Message-ID: <6881.1027699265@redhat.com> (raw)
In-Reply-To: <1027703485.13429.53.camel@irongate.swansea.linux.org.uk>
alan@lxorguk.ukuu.org.uk said:
> Well for a starter lets try user writing a block to flash which needs
> an erase from a block which happens to be not yet paged in and so
> still on the flash you are writing to.
What locks the page? Surely our write() implementation is just using
copy_from_user(), to get the data from the user, and each erase and write
to the flash chip can be considered atomic -- what's holding a lock, and
what's causing the deadlock?
--
dwmw2
next prev parent reply other threads:[~2002-07-26 15:57 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-07-25 6:56 [PATCH]: uClinux (MMU-less) patches against 2.5.28 Greg Ungerer
2002-07-25 14:52 ` David Woodhouse
2002-07-26 0:08 ` Greg Ungerer
2002-07-26 1:20 ` Greg Ungerer
2002-07-26 8:19 ` David Woodhouse
2002-07-26 10:39 ` Alan Cox
2002-07-26 9:39 ` David Woodhouse
2002-07-26 10:56 ` Alan Cox
2002-07-26 9:58 ` David Woodhouse
2002-07-26 14:50 ` Alan Cox
2002-07-26 14:03 ` David Woodhouse
2002-07-26 17:11 ` Alan Cox
2002-07-26 16:01 ` David Woodhouse [this message]
2002-07-26 17:27 ` Alan Cox
2002-07-26 16:27 ` David Woodhouse
2002-07-26 15:08 ` gerg
2002-07-26 15:45 ` David Woodhouse
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