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From: Christoph Hellwig <hch@infradead.org>
To: Dave Chinner <david@fromorbit.com>
Cc: xfs@oss.sgi.com
Subject: Re: [PATCH 01/11] xfs: force the log before shutting down
Date: Fri, 26 Sep 2014 03:37:24 -0700	[thread overview]
Message-ID: <20140926103724.GA24436@infradead.org> (raw)
In-Reply-To: <1411648461-29003-2-git-send-email-david@fromorbit.com>

On Thu, Sep 25, 2014 at 10:34:11PM +1000, Dave Chinner wrote:
> From: Dave Chinner <dchinner@redhat.com>
> 
> When we have marked the filesystem for shutdown, we want to prevent
> any further buffer IO from being submitted. However, we currently
> force the log after marking the filesystem as shut down, hence
> allowing IO to the log *after* we have marked both the filesystem
> and the log as in an error state.
> 
> Clean this up by forcing the log before we mark the filesytem with
> an error. This replaces the pure CIL flush that we currently have
> which works around this same issue (i.e the CIL can't be flushed
> once the shutdown flags are set) and hence enables us to clean up
> the logic substantially.
> 
> Signed-off-by: Dave Chinner <dchinner@redhat.com>

Looks good,

Reviewed-by: Christoph Hellwig <hch@lst.de>


A couple nitpicks:

> diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
> index b1131fe..a598955 100644
> --- a/fs/xfs/xfs_log.c
> +++ b/fs/xfs/xfs_log.c
> @@ -3924,13 +3924,14 @@ xfs_log_force_umount(

The top of the function comment speaks about the delaylog case,
given that this is the only option now it might be worth to clean
that up.

>  	retval = 0;

This assignment can be removed now that the xlog_state_ioerror call
below is unconditional.

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  reply	other threads:[~2014-09-26 10:37 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-09-25 12:34 [PATCH 00/11 v2] xfs: clean up xfs_buf io interfaces Dave Chinner
2014-09-25 12:34 ` [PATCH 01/11] xfs: force the log before shutting down Dave Chinner
2014-09-26 10:37   ` Christoph Hellwig [this message]
2014-09-25 12:34 ` [PATCH 02/11] xfs: Don't use xfs_buf_iowait in the delwri buffer code Dave Chinner
2014-09-25 16:19   ` Christoph Hellwig
2014-09-25 12:34 ` [PATCH 03/11] xfs: synchronous buffer IO needs a reference Dave Chinner
2014-09-26 10:11   ` Christoph Hellwig
2014-09-25 12:34 ` [PATCH 04/11] xfs: xfs_buf_ioend and xfs_buf_iodone_work duplicate functionality Dave Chinner
2014-09-26 10:14   ` Christoph Hellwig
2014-09-25 12:34 ` [PATCH 05/11] xfs: rework xfs_buf_bio_endio error handling Dave Chinner
2014-09-26 10:15   ` Christoph Hellwig
2014-09-25 12:34 ` [PATCH 06/11] xfs: kill xfs_bdstrat_cb Dave Chinner
2014-09-25 12:34 ` [PATCH 07/11] xfs: xfs_bioerror can die Dave Chinner
2014-09-26 10:16   ` Christoph Hellwig
2014-09-25 12:34 ` [PATCH 08/11] xfs: kill xfs_bioerror_relse Dave Chinner
2014-09-26 10:18   ` Christoph Hellwig
2014-09-29 19:09   ` Brian Foster
2014-09-25 12:34 ` [PATCH 09/11] xfs: introduce xfs_buf_submit[_wait] Dave Chinner
2014-09-26 12:33   ` Christoph Hellwig
2014-10-01 23:03     ` Dave Chinner
2014-09-25 12:34 ` [PATCH 10/11] xfs: check xfs_buf_read_uncached returns correctly Dave Chinner
2014-09-26 10:21   ` Christoph Hellwig
2014-09-26 23:20     ` [PATCH 10/11 v2] " Dave Chinner
2014-09-29 10:40       ` Christoph Hellwig
2014-09-25 12:34 ` [PATCH 11/11] xfs: simplify xfs_zero_remaining_bytes Dave Chinner
2014-09-26 10:22   ` Christoph Hellwig
2014-09-29 19:09   ` Brian Foster

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