From: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Date: Tue, 9 Oct 2018 20:13:42 +0000 (+0200)
Subject: dm: add dm_table_device_name()
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=f349b0a3e1f0d184374936f1b2a49352f8a4b1c8;p=openwrt%2Fstaging%2Fblogic.git

dm: add dm_table_device_name()

Add a shortcut for dm_device_name(dm_table_get_md(t)).

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
---

diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 618edfc3846f..49ab0cbef739 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -2059,6 +2059,12 @@ struct mapped_device *dm_table_get_md(struct dm_table *t)
 }
 EXPORT_SYMBOL(dm_table_get_md);
 
+const char *dm_table_device_name(struct dm_table *t)
+{
+	return dm_device_name(t->md);
+}
+EXPORT_SYMBOL_GPL(dm_table_device_name);
+
 void dm_table_run_md_queue_async(struct dm_table *t)
 {
 	struct mapped_device *md;
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index 8d937754aa0c..d7bee8669f10 100644
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -489,6 +489,7 @@ sector_t dm_table_get_size(struct dm_table *t);
 unsigned int dm_table_get_num_targets(struct dm_table *t);
 fmode_t dm_table_get_mode(struct dm_table *t);
 struct mapped_device *dm_table_get_md(struct dm_table *t);
+const char *dm_table_device_name(struct dm_table *t);
 
 /*
  * Trigger an event.