[PATCH] Remove GRUBFS

[Vladimir 'φ-coder/phcoder' Serbinenko]

It seems that in our codebase we have both GRUBFS and GRUB_FS both referring to 
the same thing: FS of /. Merge them

diff --git a/util/grub-mkconfig.in b/util/grub-mkconfig.in
index 016ee82..7b85c88 100644
--- a/util/grub-mkconfig.in
+++ b/util/grub-mkconfig.in
@@ -139,6 +139,10 @@ GRUB_DEVICE_BOOT_UUID="`${grub_probe} --device 
${GRUB_DEVICE_BOOT} --target=fs_u
 # choosing Hurd filesystem module.
 GRUB_FS="`${grub_probe} --device ${GRUB_DEVICE} --target=fs 2> /dev/null || 
echo unknown`"
 
+if [ x"$GRUB_FS" = xunknown ]; then
+    GRUB_FS="$(stat -f --printf=%T / || echo unknown)"
+fi
+
 if test -f ${sysconfdir}/default/grub ; then
   . ${sysconfdir}/default/grub
 fi
diff --git a/util/grub.d/10_linux.in b/util/grub.d/10_linux.in
index e27d6f7..00d1931 100644
--- a/util/grub.d/10_linux.in
+++ b/util/grub.d/10_linux.in
@@ -51,13 +51,7 @@ else
   LINUX_ROOT_DEVICE=UUID=${GRUB_DEVICE_UUID}
 fi
 
-GRUBFS="`${grub_probe} --device ${GRUB_DEVICE} --target=fs 2>/dev/null || 
true`"
-
-if [ x"$GRUBFS" = x ]; then
-    GRUBFS="$(stat -f --printf=%T / || true)"
-fi
-
-case x"$GRUBFS" in
+case x"$GRUB_FS" in
     xbtrfs)
        rootsubvol="`make_system_path_relative_to_its_root /`"
        rootsubvol="${rootsubvol#/}"
diff --git a/util/grub.d/20_linux_xen.in b/util/grub.d/20_linux_xen.in
index f12f059..a608435 100644
--- a/util/grub.d/20_linux_xen.in
+++ b/util/grub.d/20_linux_xen.in
@@ -59,13 +59,7 @@ if [ "${GRUB_CMDLINE_LINUX_XEN_REPLACE_DEFAULT}" ]; then
   GRUB_CMDLINE_LINUX_DEFAULT="${GRUB_CMDLINE_LINUX_XEN_REPLACE_DEFAULT}"
 fi
 
-GRUBFS="`${grub_probe} --device ${GRUB_DEVICE} --target=fs 2>/dev/null || 
true`"
-
-if [ x"$GRUBFS" = x ]; then
-    GRUBFS="$(stat -f --printf=%T /)"
-fi
-
-case x"$GRUBFS" in
+case x"$GRUB_FS" in
     xbtrfs)
        rootsubvol="`make_system_path_relative_to_its_root /`"
        rootsubvol="${rootsubvol#/}"

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