Commit 27b26f09 authored by John Garry's avatar John Garry Committed by Jens Axboe
Browse files

block: Error an attempt to split an atomic write in bio_split() 



This is disallowed.

Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarJohannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: default avatarHannes Reinecke <hare@suse.de>
Signed-off-by: default avatarJohn Garry <john.g.garry@oracle.com>
Link: https://lore.kernel.org/r/20241111112150.3756529-3-john.g.garry@oracle.com


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent e546fe1d

block/bio.c

+4 −0
Original line number Diff line number Diff line
@@ -1674,6 +1674,10 @@ struct bio *bio_split(struct bio *bio, int sectors, 
	if (WARN_ON_ONCE(bio_op(bio) == REQ_OP_ZONE_APPEND))

		return ERR_PTR(-EINVAL);



	/* atomic writes cannot be split */

	if (bio->bi_opf & REQ_ATOMIC)

		return ERR_PTR(-EINVAL);



	split = bio_alloc_clone(bio->bi_bdev, bio, gfp, bs);

	if (!split)

		return ERR_PTR(-ENOMEM);