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| author |   Christoph Hellwig <hch@lst.de> | 2021-08-09 16:17:42 +0200 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2021-08-09 11:52:28 -0600 |
| commit | 1008162b2782a3624d12b0aee8da58bc75d12e19 (patch) | |
| tree | cd166a1e0733ad08e919c27f9cce0ceb21c643ad /include/linux/blkdev.h | |
| parent | block: pass a gendisk to blk_queue_update_readahead (diff) | |
| download | linux-dev-1008162b2782a3624d12b0aee8da58bc75d12e19.tar.xz linux-dev-1008162b2782a3624d12b0aee8da58bc75d12e19.zip | |
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 <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20210809141744.1203023-4-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/blkdev.h')
| -rw-r--r-- | include/linux/blkdev.h | 1 |
1 files changed, 1 insertions, 0 deletions
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) |