Does ext4 send FUA to flush disk cache

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To: linux-ext4@xxxxxxxxxxxxxxx
Subject: Does ext4 send FUA to flush disk cache
From: Mark Busheman <markbusheman@xxxxxxxxx>
Date: Fri, 8 Apr 2011 15:02:27 -0700

I plan to use data=journal option with ext4. Would like to know if
ext4 send FUA (Forced Unit Access)
to flush the disk cache?

Cheers
Mark
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