From: Christoph Hellwig <hch@infradead.org>
To: Dave Chinner <david@fromorbit.com>
Cc: xfs@oss.sgi.com
Subject: Re: [PATCH 2/6] [XFS] Don't directly reference m_perag in allocation code
Date: Thu, 10 Dec 2009 18:18:56 -0500 [thread overview]
Message-ID: <20091210231856.GB6389@infradead.org> (raw)
In-Reply-To: <1259734299-20306-3-git-send-email-david@fromorbit.com>
On Wed, Dec 02, 2009 at 05:11:35PM +1100, Dave Chinner wrote:
> + pag = xfs_perag_get(mp, agno);
> + pag->pagf_freeblks += len;
> + xfs_perag_put(pag);
> +
> agf = XFS_BUF_TO_AGF(agbp);
> - pag = &mp->m_perag[agno];
> be32_add_cpu(&agf->agf_freeblks, len);
> xfs_trans_agblocks_delta(tp, len);
> - pag->pagf_freeblks += len;
Currently not too deep into this code, but did you make sure moving the
in-core addition before the logging of the transaction doesn't matter/
> + args->pag = xfs_perag_get(mp, args->agno);
> down_read(&mp->m_peraglock);
> - args->pag = &mp->m_perag[args->agno];
This adds another place where we could hit the growfs race until your
later patches go in.
Otherwise looks good.
_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs
next prev parent reply other threads:[~2009-12-10 23:18 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-02 6:11 [PATCH 0/6] [XFS] Fix growfs deadlocks and per-AG use after free Dave Chinner
2009-12-02 6:11 ` [PATCH 1/6] [XFS] rename xfs_get_perag Dave Chinner
2009-12-10 23:15 ` Christoph Hellwig
2009-12-10 23:25 ` Dave Chinner
2009-12-02 6:11 ` [PATCH 2/6] [XFS] Don't directly reference m_perag in allocation code Dave Chinner
2009-12-10 23:18 ` Christoph Hellwig [this message]
2009-12-10 23:41 ` Dave Chinner
2009-12-02 6:11 ` [PATCH 3/6] [XFS] Convert filestreams code to use per-ag get/put routines Dave Chinner
2009-12-10 23:22 ` Christoph Hellwig
2009-12-02 6:11 ` [PATCH 4/6] [XFS] convert remaining direct references to m_perag Dave Chinner
2009-12-10 23:24 ` Christoph Hellwig
2009-12-02 6:11 ` [PATCH 5/6] [XFS] Replace per-ag array with a radix tree Dave Chinner
2009-12-10 23:45 ` Christoph Hellwig
2009-12-11 0:43 ` Dave Chinner
2009-12-11 11:43 ` Christoph Hellwig
2009-12-11 11:46 ` Christoph Hellwig
2009-12-14 4:16 ` Nick Piggin
2009-12-02 6:11 ` [PATCH 6/6] [XFS] Reference count per-ag structures Dave Chinner
2009-12-10 23:48 ` Christoph Hellwig
2009-12-11 0:50 ` Dave Chinner
-- strict thread matches above, loose matches on Subject: below --
2009-12-14 23:11 [PATCH 0/6] XFS: Fix growfs deadlocks and per-AG use after free V2 Dave Chinner
2009-12-14 23:11 ` [PATCH 2/6] XFS: Don't directly reference m_perag in allocation code Dave Chinner
2009-12-15 6:11 [PATCH 0/6] XFS: Fix growfs deadlocks and per-AG use after free V3 Dave Chinner
2009-12-15 6:11 ` [PATCH 2/6] XFS: Don't directly reference m_perag in allocation code Dave Chinner
2009-12-20 4:24 ` Dave Chinner
2009-12-22 14:18 ` Alex Elder
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=20091210231856.GB6389@infradead.org \
--to=hch@infradead.org \
--cc=david@fromorbit.com \
--cc=xfs@oss.sgi.com \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox