block: Relocate bio integrity flags

Move flags affecting the integrity code out of the bio bi_flags and into
the block integrity payload.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/block/bio-integrity.c b/block/bio-integrity.c
index e64733b..26aa901 100644
--- a/block/bio-integrity.c
+++ b/block/bio-integrity.c
@@ -100,7 +100,7 @@
 	struct bio_integrity_payload *bip = bio_integrity(bio);
 	struct bio_set *bs = bio->bi_pool;
 
-	if (bip->bip_owns_buf)
+	if (bip->bip_flags & BIP_BLOCK_INTEGRITY)
 		kfree(page_address(bip->bip_vec->bv_page) +
 		      bip->bip_vec->bv_offset);
 
@@ -293,7 +293,7 @@
 		return -EIO;
 	}
 
-	bip->bip_owns_buf = 1;
+	bip->bip_flags |= BIP_BLOCK_INTEGRITY;
 	bip->bip_iter.bi_size = len;
 	bip_set_seed(bip, bio->bi_iter.bi_sector);