[PATCH] dm: store md name

The patch stores a printable device number in struct mapped_device for use in
warning messages and with a proposed netlink interface.

Signed-off-by: Mike Anderson <andmike@us.ibm.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 48be69f3bcfa..f140d499602a 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -69,6 +69,7 @@ struct mapped_device {
 
         request_queue_t *queue;
         struct gendisk *disk;
+        char name[16];
 
         void *interface_ptr;
 
@@ -842,6 +843,7 @@ static struct mapped_device *alloc_dev(unsigned int minor, int persistent)
         md->disk->private_data = md;
         sprintf(md->disk->disk_name, "dm-%d", minor);
         add_disk(md->disk);
+        format_dev_t(md->name, MKDEV(_major, minor));
 
         atomic_set(&md->pending, 0);
         init_waitqueue_head(&md->wait);