From: Andrew Morton <akpm@osdl.org>
To: "Thomas S. Iversen" <zensonic@zensonic.dk>
Cc: dm-devel@redhat.com, linux-kernel@vger.kernel.org
Subject: Re: Help tracking down problem --- endless loop in __find_get_block_slow
Date: Tue, 22 Feb 2005 01:18:21 -0800 [thread overview]
Message-ID: <20050222011821.2a917859.akpm@osdl.org> (raw)
In-Reply-To: <4219BC1A.1060007@zensonic.dk>
"Thomas S. Iversen" <zensonic@zensonic.dk> wrote:
>
> But if I do
>
> dd if=/dev/zero of=/mnt/testfile count=N, N>6
>
> I get into an endless loop in __find_get_block_slow.
The only way in which __find_get_block_slow() can loop is if something
wrecked the buffer_head ring at page->private: something caused an internal
loop via bh->b_this_page.
Are you sure that's where things are hanging? That it's not stuck on a
spinlock?
A sysrq-P trace might help.
next prev parent reply other threads:[~2005-02-22 9:18 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-21 10:46 Thomas S. Iversen
2005-02-22 9:18 ` Andrew Morton [this message]
2005-02-22 22:46 ` Jeff Mahoney
2005-02-22 23:28 ` Andrew Morton
2005-02-26 0:03 ` Jeff Mahoney
2005-02-28 21:06 ` Jeff Mahoney
2005-02-28 21:09 ` Help tracking down problem --- endless loop in __find_get_block_slow (now with the patch) Jeff Mahoney
2005-02-23 12:00 ` Help tracking down problem --- endless loop in __find_get_block_slow Thomas S. Iversen
2005-02-23 12:10 ` Andrew Morton
2005-02-23 13:02 ` Thomas S. Iversen
2005-02-23 20:09 ` Andrew Morton
2005-02-23 22:24 ` Thomas S. Iversen
2005-02-23 23:17 ` Andrew Morton
2005-02-24 8:54 ` Thomas S. Iversen
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