Linux-XFS Archive on lore.kernel.org
 help / color / Atom feed
From: "Darrick J. Wong" <djwong@kernel.org>
To: Christoph Hellwig <hch@lst.de>
Cc: linux-xfs@vger.kernel.org, dchinner@redhat.com,
	christian.brauner@ubuntu.com
Subject: Re: [PATCH 3/3] xfs: force log and push AIL to clear pinned inodes when aborting mount
Date: Wed, 3 Mar 2021 11:02:24 -0800
Message-ID: <20210303190224.GV7269@magnolia> (raw)
In-Reply-To: <20210303064812.GD7499@lst.de>

On Wed, Mar 03, 2021 at 07:48:12AM +0100, Christoph Hellwig wrote:
> On Tue, Mar 02, 2021 at 02:28:34PM -0800, Darrick J. Wong wrote:
> > From: Darrick J. Wong <djwong@kernel.org>
> > 
> > If we allocate quota inodes in the process of mounting a filesystem but
> > then decide to abort the mount, it's possible that the quota inodes are
> > sitting around pinned by the log.  Now that inode reclaim relies on the
> > AIL to flush inodes, we have to force the log and push the AIL in
> > between releasing the quota inodes and kicking off reclaim to tear down
> > all the incore inodes.
> > 
> > This was originally found during a fuzz test of metadata directories
> > (xfs/1546), but the actual symptom was that reclaim hung up on the quota
> > inodes.
> 
> This looks ok, but I'm a little worried about sprinkling these log
> forces and AIL pushes around.  We have a similar one but split int
> the regular unmount path, and I wonder if we just need to regularize
> that.

Hmm, the unmount path splits the log force and the ail split while we
wait for free extents to get discarded.  Log replay can free extents, so
at the very least I think we need to do that here too.

--D

  reply index

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-02 22:28 [PATCHSET 0/3] xfs: small fixes for 5.12 Darrick J. Wong
2021-03-02 22:28 ` [PATCH 1/3] xfs: fix quota accounting when a mount is idmapped Darrick J. Wong
2021-03-03  6:43   ` Christoph Hellwig
2021-03-03 14:44   ` Christian Brauner
2021-03-03 18:33     ` Darrick J. Wong
2021-03-03 19:09       ` Christian Brauner
2021-03-02 22:28 ` [PATCH 2/3] xfs: avoid buffer deadlocks in inumbers/bulkstat Darrick J. Wong
2021-03-03  6:45   ` Christoph Hellwig
2021-03-03 18:57     ` Darrick J. Wong
2021-03-02 22:28 ` [PATCH 3/3] xfs: force log and push AIL to clear pinned inodes when aborting mount Darrick J. Wong
2021-03-03  6:48   ` Christoph Hellwig
2021-03-03 19:02     ` Darrick J. Wong [this message]
2021-03-02 23:07 ` [PATCHSET 0/3] xfs: small fixes for 5.12 Christian Brauner

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=20210303190224.GV7269@magnolia \
    --to=djwong@kernel.org \
    --cc=christian.brauner@ubuntu.com \
    --cc=dchinner@redhat.com \
    --cc=hch@lst.de \
    --cc=linux-xfs@vger.kernel.org \
    /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

Linux-XFS Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-xfs/0 linux-xfs/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-xfs linux-xfs/ https://lore.kernel.org/linux-xfs \
		linux-xfs@vger.kernel.org
	public-inbox-index linux-xfs

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-xfs


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git