From d04c406f29d9f4dbcb5eb5aa79ce0445c7e9d652 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Fri, 14 Dec 2018 17:21:22 +0100 Subject: [PATCH] block: clear REQ_HIPRI if polling is not supported This prevents a HIPRI bio from being submitted through a stacking driver that does not support polling and thus won't poll for I/O completion. Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe --- block/blk-core.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/block/blk-core.c b/block/blk-core.c index fa661bac40af..c78042975737 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -921,6 +921,9 @@ generic_make_request_checks(struct bio *bio) } } + if (!test_bit(QUEUE_FLAG_POLL, &q->queue_flags)) + bio->bi_opf &= ~REQ_HIPRI; + switch (bio_op(bio)) { case REQ_OP_DISCARD: if (!blk_queue_discard(q))