[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>

diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 48be69f3bcfa5f6aec2e77d99c6481e1efd127d6..f140d499602a14f217a7dfc3d3bd85a6ef828ef7 100644 (file)
--- 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);