block: switch bios to blk_status_t

Replace bi_error with a new bi_status to allow for a clear conversion.
Note that device mapper overloaded bi_error with a private value, which
we'll have to keep arround at least for now and thus propagate to a
proper blk_status_t value.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h
index b8622e4d1744..d87ac27a5f2b 100644
--- a/fs/btrfs/btrfs_inode.h
+++ b/fs/btrfs/btrfs_inode.h
@@ -310,7 +310,8 @@ struct btrfs_dio_private {
          * The original bio may be split to several sub-bios, this is
          * done during endio of sub-bios
          */
-        int (*subio_endio)(struct inode *, struct btrfs_io_bio *, int);
+        blk_status_t (*subio_endio)(struct inode *, struct btrfs_io_bio *,
+                        blk_status_t);
 };
 
 /*