From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Alexey Dobriyan <adobriyan@sw.ru>,
linux-kernel@vger.kernel.org, mingo@elte.hu
Subject: Re: Possible circular locking: ->mmap_sem vs jbd_handle
Date: Tue, 16 Oct 2007 11:05:12 +0200 [thread overview]
Message-ID: <1192525512.27435.90.camel@twins> (raw)
In-Reply-To: <20071016020159.5cff8976.akpm@linux-foundation.org>
[-- Attachment #1: Type: text/plain, Size: 889 bytes --]
On Tue, 2007-10-16 at 02:01 -0700, Andrew Morton wrote:
> On Tue, 16 Oct 2007 12:54:29 +0400 Alexey Dobriyan <adobriyan@sw.ru> wrote:
>
> > Got this during LTP's diotest1. Reproducable.
> >
> > =======================================================
> > [ INFO: possible circular locking dependency detected ]
> > 2.6.23-65a6ec0d72a07f16719e9b7a96e1c4bae044b591 #2
> > -------------------------------------------------------
> > diotest1/13563 is trying to acquire lock:
> > (&mm->mmap_sem){----}, at: [<c107a7b7>] dio_get_page+0x4b/0x16b
> >
> > but task is already holding lock:
> > (jbd_handle){--..}, at: [<c1099b05>] journal_start+0xf3/0x120
> >
> > which lock already depends on the new lock.
>
> Someone taught lockdep about journal_start? That's gonna hurt.
It was you who suggested doing so,...
Are these valid reports, or is the annotation wrong?
[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 189 bytes --]
next prev parent reply other threads:[~2007-10-16 9:05 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-16 8:54 Possible circular locking: ->mmap_sem vs jbd_handle Alexey Dobriyan
2007-10-16 9:01 ` Andrew Morton
2007-10-16 9:05 ` Peter Zijlstra [this message]
2007-10-16 9:08 ` Andrew Morton
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1192525512.27435.90.camel@twins \
--to=a.p.zijlstra@chello.nl \
--cc=adobriyan@sw.ru \
--cc=akpm@linux-foundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.