Add a dracut module for bcache

Makefile

@@ -10,6 +10,9 @@ install: make-bcache probe-bcache bcache-super-show
 	install -m0755 probe-bcache bcache-register		$(DESTDIR)$(UDEVLIBDIR)/
 	install -m0644 69-bcache.rules	$(DESTDIR)$(UDEVLIBDIR)/rules.d/
 	-install -T -m0755 initramfs/hook	$(DESTDIR)/usr/share/initramfs-tools/hooks/bcache
+	if [ -d $(DESTDIR)/lib/dracut/modules.d ]; \
+	then install -D -m0755 dracut/module-setup.sh $(DESTDIR)/lib/dracut/modules.d/90bcache/module-setup.sh; \
+	fi
 	install -m0644 -- *.8 $(DESTDIR)${PREFIX}/share/man/man8/
 #	install -m0755 bcache-test $(DESTDIR)${PREFIX}/sbin/
 

dracut/module-setup.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
+# ex: ts=8 sw=4 sts=4 et filetype=sh
+
+#
+# At some point (util-linux v2.24) blkid will be able to identify bcache
+# but until every system has this version of util-linux, probe-bcache is
+# provided as an alternative.
+#
+
+check() {
+    if [[ $hostonly ]] || [[ $mount_needs ]]
+    then
+        for fs in "${host_fs_types[@]}"; do
+            [[ $fs = "bcache" ]] && return 0
+        done
+        return 255
+    fi
+
+    return 0
+}
+
+depends() {
+    return 0
+}
+
+installkernel() {
+    instmods bcache
+}
+
+install() {
+    inst_multiple ${udevdir}/probe-bcache ${udevdir}/bcache-register
+    inst_rules 69-bcache.rules
+}