tmpfs: add user_xattr mount option #180
Merged
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For the reasons discussed at
http://www.spinics.net/lists/linux-mm/msg109982.html, this simplistic
implementation of user xattrs can't simply be made available to
everyone.
We want user xattrs on tmpfs to support flatpak running as an
unprivileged user on overlayfs whose upper fs is tmpfs, a situation
which only arises in our pristine image boots. So, for our purposes, a
mount flag is okay: we can set it at the same time as setting up the
overlays.
This is a forward-port of #179.
https://phabricator.endlessm.com/T13817