From 376f7ef8bfeaee3993c2e85df1bbaa06725b9342 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Sun, 2 Dec 2018 17:46:27 +0100 Subject: block: only allow polling if a poll queue_map exists This avoids having to have differnet mq_ops for different setups with or without poll queues. Reviewed-by: Sagi Grimberg Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe --- block/blk-sysfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'block/blk-sysfs.c') diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 9f0cb370b39b..bb7c642ffefa 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -402,7 +402,7 @@ static ssize_t queue_poll_store(struct request_queue *q, const char *page, unsigned long poll_on; ssize_t ret; - if (!q->mq_ops || !q->mq_ops->poll) + if (!q->tag_set || q->tag_set->nr_maps <= HCTX_TYPE_POLL) return -EINVAL; ret = queue_var_store(&poll_on, page, count); -- cgit v1.2.3