Commit cec0707e authored by Jens Axboe's avatar Jens Axboe
Browse files

block: silently error an unsupported barrier bio 



This fixes a "regression" from 2.6.28, where the barrier probes that file
systems may do would trigger additional end request warnings in dmesg.

Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
parent dbdac9b7

block/blk-core.c

+5 −0
Original line number Diff line number Diff line
@@ -1451,6 +1451,11 @@ static inline void __generic_make_request(struct bio *bio) 
			err = -EOPNOTSUPP;

			goto end_io;

		}

		if (bio_barrier(bio) && bio_has_data(bio) &&

		    (q->next_ordered == QUEUE_ORDERED_NONE)) {

			err = -EOPNOTSUPP;

			goto end_io;

		}



		ret = q->make_request_fn(q, bio);

	} while (ret);

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