From mboxrd@z Thu Jan  1 00:00:00 1970
From: omgalvan.86@gmail.com (omgalvan.86 at gmail.com)
Date: Tue, 12 Sep 2017 18:14:16 -0300
Subject: Default file_operations methods?
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Nevermind, I just saw that if read/write are left undefined, they'll be NULL and
return -EINVAL.