Signed-off-by: Bart Van Assche <bart.vanassche@xxxxxxxxxxx> Cc: Jan Kara <jack@xxxxxxx> Cc: Christoph Hellwig <hch@xxxxxx> Cc: Mike Snitzer <snitzer@xxxxxxxxxx> Cc: Martin K. Petersen <martin.petersen@xxxxxxxxxx> Cc: Dmitry Monakhov <dmonakhov@xxxxxxxxxx> --- drivers/block/brd.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/block/brd.c b/drivers/block/brd.c index 91eb844..9806551 100644 --- a/drivers/block/brd.c +++ b/drivers/block/brd.c @@ -342,8 +342,9 @@ static blk_qc_t brd_make_request(struct request_queue *q, struct bio *bio) blk_queue_split(q, &bio, q->bio_split); if (unlikely(bio->bi_rw & REQ_DISCARD)) { - if (sector & ((PAGE_SIZE >> SECTOR_SHIFT) - 1) || - bio->bi_iter.bi_size & ~PAGE_MASK) + if (bio->bi_iter.bi_size && + (sector & ((PAGE_SIZE >> SECTOR_SHIFT) - 1) || + bio->bi_iter.bi_size & ~PAGE_MASK)) goto io_error; discard_from_brd(brd, sector, bio->bi_iter.bi_size); goto out; -- 2.8.1 -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html