From: Christoph Hellwig Date: Mon, 9 Aug 2021 14:17:42 +0000 (+0200) Subject: block: add a queue_has_disk helper X-Git-Tag: v5.15-rc1~161^2~24 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=1008162b2782a3624d12b0aee8da58bc75d12e19;p=thirdparty%2Fkernel%2Flinux.git block: add a queue_has_disk helper Add a helper to check if a gendisk is associated with a request_queue. Signed-off-by: Christoph Hellwig Reviewed-by: Jan Kara Reviewed-by: Johannes Thumshirn Link: https://lore.kernel.org/r/20210809141744.1203023-4-hch@lst.de Signed-off-by: Jens Axboe --- diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index ac3642c88a4d0..96f3d9617cd8a 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)