Add a helper to check if a gendisk is associated with a request_queue. Signed-off-by: Christoph Hellwig <hch@xxxxxx> --- include/linux/blkdev.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index ac3642c88a4d..96f3d9617cd8 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -664,6 +664,7 @@ extern void blk_clear_pm_only(struct request_queue *q); dma_map_page_attrs(dev, (bv)->bv_page, (bv)->bv_offset, (bv)->bv_len, \ (dir), (attrs)) +#define queue_has_disk(q) ((q)->kobj.parent != NULL) #define queue_to_disk(q) (dev_to_disk(kobj_to_dev((q)->kobj.parent))) static inline bool queue_is_mq(struct request_queue *q) -- 2.30.2
