[PATCH v4 8/8] block: remove dead metadata handling from the async direct I/O path

[Tal Zussman <tz2294@columbia.edu>]

Since commit 2729a60bbfb9 ("block: don't silently ignore metadata for
sync read/write"), blkdev_direct_IO() sends every IOCB_HAS_METADATA
request to __blkdev_direct_IO(). Remove the now unreachable metadata
mapping in __blkdev_direct_IO_async() and the unmap in its completion
handler.

No functional change.

Assisted-by: Claude:claude-fable-5
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@kernel.org>
Signed-off-by: Tal Zussman <tz2294@columbia.edu>
---
 block/fops.c | 10 ----------
 1 file changed, 10 deletions(-)

diff --git a/block/fops.c b/block/fops.c
index 7f23778f6b81..55c2e606c662 100644
--- a/block/fops.c
+++ b/block/fops.c
@@ -306,9 +306,6 @@ static void blkdev_bio_end_io_async(struct bio *bio)
 		ret = blk_status_to_errno(bio->bi_status);
 	}
 
-	if (bio_integrity(bio))
-		bio_integrity_unmap_user(bio);
-
 	iocb->ki_complete(iocb, ret);
 
 	if (dio->flags & DIO_SHOULD_DIRTY) {
@@ -370,13 +367,6 @@ static ssize_t __blkdev_direct_IO_async(struct kiocb *iocb,
 		task_io_account_write(bio->bi_iter.bi_size);
 	}
 
-	if (iocb->ki_flags & IOCB_HAS_METADATA) {
-		ret = bio_integrity_map_iter(bio, iocb->private);
-		WRITE_ONCE(iocb->private, NULL);
-		if (unlikely(ret))
-			goto out_bio_put;
-	}
-
 	if (iocb->ki_flags & IOCB_HIPRI) {
 		bio->bi_opf |= REQ_POLLED;
 		submit_bio(bio);

-- 
2.39.5