[PATCH] dm/md dependency tree in sysfs: holders/slaves subdirectory
Creating "slaves" and "holders" directories in /sys/block/<disk> and
creating "holders" directory under /sys/block/<disk>/<partition>
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Cc: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index fd647fd..eea61cc 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -78,6 +78,9 @@
sector_t start_sect;
sector_t nr_sects;
struct kobject kobj;
+#ifdef CONFIG_SYSFS
+ struct kobject *holder_dir;
+#endif
unsigned ios[2], sectors[2]; /* READs and WRITEs */
int policy, partno;
};
@@ -114,6 +117,10 @@
int number; /* more of the same */
struct device *driverfs_dev;
struct kobject kobj;
+#ifdef CONFIG_SYSFS
+ struct kobject *holder_dir;
+ struct kobject *slave_dir;
+#endif
struct timer_rand_state *random;
int policy;