block: remove the nr_sects field in struct hd_struct

Now that the hd_struct always has a block device attached to it, there is
no need for having two size field that just get out of sync.

Additionally the field in hd_struct did not use proper serialization,
possibly allowing for torn writes.  By only using the block_device field
this problem also gets fixed.

Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Greg Kroah-Hartman <[email protected]>
Reviewed-by: Jan Kara <[email protected]>
Reviewed-by: Hannes Reinecke <[email protected]>
Acked-by: Coly Li <[email protected]>			[bcache]
Acked-by: Chao Yu <[email protected]>			[f2fs]
Signed-off-by: Jens Axboe <[email protected]>

0 files changed, 0 insertions, 0 deletions