From: Dave Chinner <david@fromorbit.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: linux-xfs@vger.kernel.org
Subject: Re: [PATCH 2/9] xfs: XLOG_STATE_IOERROR must die
Date: Fri, 2 Jul 2021 18:55:19 +1000 [thread overview]
Message-ID: <20210702085519.GH664593@dread.disaster.area> (raw)
In-Reply-To: <YN7HivsUsXYmfBHM@infradead.org>
On Fri, Jul 02, 2021 at 09:00:10AM +0100, Christoph Hellwig wrote:
> > else
> > ASSERT(iclog->ic_state == XLOG_STATE_WANT_SYNC ||
> > - iclog->ic_state == XLOG_STATE_IOERROR);
> > + xlog_is_shutdown(log));
>
> Nit: think doing this as:
>
> else if (!xlog_is_shutdown(log))
> ASSERT(iclog->ic_state == XLOG_STATE_WANT_SYNC);
>
> would be a tad cleaner.
I kill a lot of these checks in the near future. Once the log
shutdown doesn't change the iclog state, we no longer need to check
if the log is shutdown when checking state like this because
shutdown doesn't change the iclog state when we have active
references to the iclog....
IOWs, these are all figments of the horrible racy log shutdown that
changes the iclog state regardless of who is using the iclog at the
time. This pattern sucks, it's broken and it goes away soon so
there's not much point in rearranging these asserts...
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
next prev parent reply other threads:[~2021-07-02 8:55 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-30 6:38 [PATCH 0/9] xfs: shutdown is a racy mess Dave Chinner
2021-06-30 6:38 ` [PATCH 1/9] xfs: convert XLOG_FORCED_SHUTDOWN() to xlog_is_shutdown() Dave Chinner
2021-06-30 16:10 ` Darrick J. Wong
2021-07-02 7:48 ` Christoph Hellwig
2021-07-02 8:45 ` Dave Chinner
2021-07-02 9:27 ` Christoph Hellwig
2021-06-30 6:38 ` [PATCH 2/9] xfs: XLOG_STATE_IOERROR must die Dave Chinner
2021-06-30 15:22 ` kernel test robot
2021-06-30 15:22 ` [PATCH] xfs: fix semicolon.cocci warnings kernel test robot
2021-07-02 8:00 ` [PATCH 2/9] xfs: XLOG_STATE_IOERROR must die Christoph Hellwig
2021-07-02 8:55 ` Dave Chinner [this message]
2021-06-30 6:38 ` [PATCH 3/9] xfs: move recovery needed state updates to xfs_log_mount_finish Dave Chinner
2021-07-02 8:10 ` Christoph Hellwig
2021-06-30 6:38 ` [PATCH 4/9] xfs: convert log flags to an operational state field Dave Chinner
2021-07-02 8:15 ` Christoph Hellwig
2021-07-09 4:33 ` Darrick J. Wong
2021-06-30 6:38 ` [PATCH 5/9] xfs: make forced shutdown processing atomic Dave Chinner
2021-07-02 8:24 ` Christoph Hellwig
2021-07-05 1:28 ` Dave Chinner
2021-07-09 4:40 ` Darrick J. Wong
2021-07-14 3:15 ` Dave Chinner
2021-07-14 5:02 ` Darrick J. Wong
2021-06-30 6:38 ` [PATCH 6/9] xfs: reowrk up xlog_state_do_callback Dave Chinner
2021-07-02 8:28 ` Christoph Hellwig
2021-07-09 4:42 ` Darrick J. Wong
2021-06-30 6:38 ` [PATCH 7/9] xfs: separate out log shutdown callback processing Dave Chinner
2021-07-02 8:36 ` Christoph Hellwig
2021-07-05 1:46 ` Dave Chinner
2021-06-30 6:38 ` [PATCH 8/9] xfs: don't run shutdown callbacks on active iclogs Dave Chinner
2021-07-02 8:48 ` Christoph Hellwig
2021-07-05 2:04 ` Dave Chinner
2021-06-30 6:38 ` [PATCH 9/9] xfs: log head and tail aren't reliable during shutdown Dave Chinner
2021-07-02 8:53 ` Christoph Hellwig
2021-07-05 2:22 ` Dave Chinner
2021-07-14 3:19 [PATCH 0/9 v2] xfs: shutdown is a racy mess Dave Chinner
2021-07-14 3:19 ` [PATCH 2/9] xfs: XLOG_STATE_IOERROR must die Dave Chinner
2021-07-14 6:13 ` Christoph Hellwig
2021-07-14 21:51 ` Darrick J. Wong
2021-08-10 5:18 [PATCH 0/9 v3] xfs: shutdown is a racy mess Dave Chinner
2021-08-10 5:18 ` [PATCH 2/9] xfs: XLOG_STATE_IOERROR must die Dave Chinner
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