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From: Andrew Morton <akpm@linux-foundation.org>
To: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Bart Dopheide <dopheide@fmf.nl>,
	Alan Cox <alan@lxorguk.ukuu.org.uk>,
	linux-kernel@vger.kernel.org,
	OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>,
	Jens Axboe <jens.axboe@oracle.com>,
	Bartlomiej Zolnierkiewicz <mzolnier@gmail.com>
Subject: Re: Kernel BUG at fs/mpage.c:489
Date: Wed, 13 Feb 2008 01:32:55 -0800	[thread overview]
Message-ID: <20080213013255.b4ea534c.akpm@linux-foundation.org> (raw)
In-Reply-To: <200802132024.03687.nickpiggin@yahoo.com.au>

On Wed, 13 Feb 2008 20:24:03 +1100 Nick Piggin <nickpiggin@yahoo.com.au> wrote:

> BTW is it really true that the buffer can never be locked by
> anything else at this point?

It has been for the past five or six years.  With the page locked, nobody
else can get at that page.

> What about fsync_buffers_list?

They're metadata buffers, not regular file data.  Things might get ugly if
IO to /dev/sda went via that path, but it doesn't.


  reply	other threads:[~2008-02-13  9:35 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-12 19:45 Bart Dopheide
2008-02-12 21:50 ` Alan Cox
2008-02-13  1:05   ` Nick Piggin
2008-02-13  7:26     ` Bart Dopheide
2008-02-13  9:01       ` Andrew Morton
2008-02-13  9:24         ` Nick Piggin
2008-02-13  9:32           ` Andrew Morton [this message]
2008-02-13  9:39             ` Nick Piggin
2008-02-13 17:40         ` OGAWA Hirofumi

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