block: allocate struct hd_struct as part of struct bdev_inode
Allocate hd_struct together with struct block_device to pre-load
the lifetime rule changes in preparation of merging the two structures.
Note that part0 was previously embedded into struct gendisk, but is
a separate allocation now, and already points to the block_device instead
of the hd_struct. The lifetime of struct gendisk is still controlled by
the struct device embedded in the part0 hd_struct.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c
index ba56f3f..343f56b 100644
--- a/drivers/block/drbd/drbd_worker.c
+++ b/drivers/block/drbd/drbd_worker.c
@@ -1678,7 +1678,8 @@ void drbd_rs_controller_reset(struct drbd_device *device)
atomic_set(&device->rs_sect_in, 0);
atomic_set(&device->rs_sect_ev, 0);
device->rs_in_flight = 0;
- device->rs_last_events = (int)part_stat_read_accum(&disk->part0, sectors);
+ device->rs_last_events =
+ (int)part_stat_read_accum(disk->part0->bd_part, sectors);
/* Updating the RCU protected object in place is necessary since
this function gets called from atomic context.
