dm raid1: add mirror_set to struct mirror

Store a pointer to the owning mirror_set structure within each mirror
structure for a subsequent patch to use.

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>

diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index 8aafbb7ec574b702dd35c51900d204b5b7a906ce..31123d4a6b9cc39dbeec455d50b540b97ac99c06 100644 (file)
--- a/drivers/md/dm-raid1.c
+++ b/drivers/md/dm-raid1.c
@@ -114,6 +114,7 @@ struct region {
  * Mirror set structures.
  *---------------------------------------------------------------*/
 struct mirror {
+       struct mirror_set *ms;
        atomic_t error_count;
        struct dm_dev *dev;
        sector_t offset;
@@ -1017,6 +1018,7 @@ static int get_mirror(struct mirror_set *ms, struct dm_target *ti,
                return -ENXIO;
        }
 
+       ms->mirror[mirror].ms = ms;
        ms->mirror[mirror].offset = offset;
 
        return 0;