block: remove bio_is_rw

With the addition of the zoned operations the tests in this function
became incorrect.  But I think it's much better to just open code the
allow operations in the only caller anyway.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NShaun Tancheff <shaun.tancheff@seagate.com>
Signed-off-by: NJens Axboe <axboe@fb.com>

block/bio-integrity.c

@@ -172,7 +172,7 @@ bool bio_integrity_enabled(struct bio *bio)
 {
 	struct blk_integrity *bi = bdev_get_integrity(bio->bi_bdev);
 
-	if (!bio_is_rw(bio))
+	if (bio_op(bio) != REQ_OP_READ && bio_op(bio) != REQ_OP_WRITE)
 		return false;
 
 	/* Already protected? */

include/linux/bio.h

@@ -83,17 +83,6 @@ static inline bool bio_no_advance_iter(struct bio *bio)
 	       bio_op(bio) == REQ_OP_WRITE_SAME;
 }
 
-static inline bool bio_is_rw(struct bio *bio)
-{
-	if (!bio_has_data(bio))
-		return false;
-
-	if (bio_no_advance_iter(bio))
-		return false;
-
-	return true;
-}
-
 static inline bool bio_mergeable(struct bio *bio)
 {
 	if (bio->bi_opf & REQ_NOMERGE_FLAGS)