[PATCH] dm: Correct clone info initialisation

Initialize the clone-info's index to the original bio's index.
Required to properly handle stacking DM devices. [Kevin Corry]

diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index e6348774b643cc2506f224404167af747000f286..95bea07294c0814242e5eaa3bda9be5e60bfe5b3 100644 (file)
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -475,7 +475,7 @@ static void __split_bio(struct mapped_device *md, struct bio *bio)
        ci.io->md = md;
        ci.sector = bio->bi_sector;
        ci.sector_count = bio_sectors(bio);
-       ci.idx = 0;
+       ci.idx = bio->bi_idx;
 
        atomic_inc(&md->pending);
        while (ci.sector_count)