Hum, weird. I have hard time understanding how that change could be causing
fs corruption on Aplha but OTOH it is not completely unthinkable. With this
commit we may migrate some block device pages we were not able to migrate
previously and that could be causing some unexpected issue. I'll look into
this.

To make things more interesting, it does not happen on any alpha but only one subarch
so far: https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1889207.html
is my original bug report.

-- 
Meelis Roos [off-list ref]