On GNU/Linux Desktop, I use udisks-glue so that DnDpinentry folder can
be mounted with sync and noatime options.

After installing udisks-glue, I invoke gnome-session-properties to
add udisks-glue to "Startup Program".

Then, I have two files to configure udisks (disable udisks for
DnDpinentry) and udisks-glue (enable and specify options for DnDpinentry).

/etc/udev/rules.d/88-udisks.rules
---------------
ENV{ID_VENDOR}=="FSIJ", ENV{DEVTYPE}=="disk", ENV{ID_FS_LABEL}=="DnDpinentry", ENV{UDISKS_PRESENTATION_NOPOLICY}="1"
---------------

~/.udisks-glue.conf
---------------
filter gone {
    label = "DnDpinentry"
    optical = false
}

match gone {
    automount = true
    automount_options = { sync, noatime }
}
---------------

We need following setting for pinentry.  Or else, you can't do
anything when pinentry grabs mouse focus.

~/.gnupg/gpg-agent.conf
---------------
no-grab
---------------