Remove flush_dry_bio_endio

The entire function of flush_dry_bio_endio is to undo the effects
of bio_endio (when called on a barrier request).  So remove the
function and the call to bio_endio.

This allows us to remove "bi_size" from "struct request_queue".

Signed-off-by: Neil Brown <neilb@suse.de>

### Diffstat output
 ./block/ll_rw_blk.c      |   39 ++-------------------------------------
 ./include/linux/blkdev.h |    1 -
 2 files changed, 2 insertions(+), 38 deletions(-)

diff .prev/block/ll_rw_blk.c ./block/ll_rw_blk.c
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 0 insertions, 1 deletions

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index a0a998140447..95be0ac57e76 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -471,7 +471,6 @@ struct request_queue
         int                     orderr, ordcolor;
         struct request          pre_flush_rq, bar_rq, post_flush_rq;
         struct request          *orig_bar_rq;
-        unsigned int            bi_size;
 
         struct mutex            sysfs_lock;