bcache: Take data offset from the bdev superblock.

Add a new superblock version, and consolidate related defines.

Signed-off-by: Gabriel de Perthuis <g2p.code+bcache@gmail.com>
Signed-off-by: Kent Overstreet <koverstreet@google.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index 83731dc36f34..e5ff12e52d5b 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -1220,7 +1220,7 @@ static void cached_dev_make_request(struct request_queue *q, struct bio *bio)
         part_stat_unlock();
 
         bio->bi_bdev = dc->bdev;
-        bio->bi_sector += BDEV_DATA_START;
+        bio->bi_sector += dc->sb.data_offset;
 
         if (cached_dev_get(dc)) {
                 s = search_alloc(bio, d);