From: Dave Chinner <david@fromorbit.com>
To: Eryu Guan <eguan@redhat.com>
Cc: fstests@vger.kernel.org, linux-ext4@vger.kernel.org
Subject: Re: [PATCH 2/2] generic: test I/O on dm error device
Date: Tue, 15 Mar 2016 13:46:16 +1100 [thread overview]
Message-ID: <20160315024616.GC30721@dastard> (raw)
In-Reply-To: <1457710822-30532-2-git-send-email-eguan@redhat.com>
On Fri, Mar 11, 2016 at 11:40:22PM +0800, Eryu Guan wrote:
> This is a test that performs simple I/O on dm error device, which
> returns EIO on all I/O request.
>
> This is motivated by an ext4 bug that crashes kernel on error path when
> trying to update atime. Following kernel patch should fix the issue
>
> ext4: fix NULL pointer dereference in ext4_mark_inode_dirty()
Why does this test require the loop device? Why can't you just
unmount the filesystem, run 'blkdev --flushbufs <dev>' to ensure
there are no cached buffers/pages on the block device, then mount
it again?
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
next prev parent reply other threads:[~2016-03-15 2:46 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-11 15:40 [PATCH 1/2] common: make _dmerror_init accept device and mount point as param Eryu Guan
2016-03-11 15:40 ` [PATCH 2/2] generic: test I/O on dm error device Eryu Guan
2016-03-15 2:46 ` Dave Chinner [this message]
2016-03-15 8:02 ` Eryu Guan
2016-03-15 8:12 ` [PATCH v2] " Eryu Guan
2016-03-23 2:53 ` Dave Chinner
2016-03-23 3:25 ` Eryu Guan
2016-03-23 4:14 ` Eryu Guan
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