From: Zach Brown <zab@zabbo.net>
Subject: Re: [PATCH, RFC] Don't do page stablization if !CONFIG_BLKDEV_INTEGRITY
Date: Wed, 07 Mar 2012 21:39:50 -0500
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References: <E1S5QTU-0005Cc-Kl@tytso-glaptop.cam.corp.google.com> <4F57F523.3020703@redhat.com>
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Cc: Theodore Ts'o <tytso@mit.edu>, linux-fsdevel@vger.kernel.org,
	linux-ext4@vger.kernel.org
To: Eric Sandeen <sandeen@redhat.com>
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> Can you devise a non-secret testcase that demonstrates this?

Hmm.  I bet you could get fio to do it.  Giant file, random mmap()
writes, spin until the CPU overwhelms writeback?

- z