From: Christoph Hellwig <hch@lst.de>
To: Jens Axboe <axboe@kernel.dk>
Cc: Tejun Heo <tj@kernel.org>, Jan Kara <jack@suse.cz>,
linux-block@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
cgroups@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-mm@kvack.org
Subject: [PATCH 3/5] block: add a queue_has_disk helper
Date: Mon, 9 Aug 2021 16:17:42 +0200 [thread overview]
Message-ID: <20210809141744.1203023-4-hch@lst.de> (raw)
In-Reply-To: <20210809141744.1203023-1-hch@lst.de>
Add a helper to check if a gendisk is associated with a request_queue.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
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
next prev parent reply other threads:[~2021-08-09 14:21 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-09 14:17 move the bdi from the request_queue to the gendisk Christoph Hellwig
2021-08-09 14:17 ` [PATCH 1/5] mm: hide laptop_mode_wb_timer entirely behind the BDI API Christoph Hellwig
2021-08-09 14:33 ` Johannes Thumshirn
2021-08-09 15:10 ` Jan Kara
2021-08-10 21:56 ` Guenter Roeck
2021-08-11 5:22 ` Christoph Hellwig
2021-08-09 14:17 ` [PATCH 2/5] block: pass a gendisk to blk_queue_update_readahead Christoph Hellwig
2021-08-09 14:35 ` Johannes Thumshirn
2021-08-09 15:17 ` Jan Kara
2021-08-09 14:17 ` Christoph Hellwig [this message]
2021-08-09 14:37 ` [PATCH 3/5] block: add a queue_has_disk helper Johannes Thumshirn
2021-08-09 15:18 ` Jan Kara
2021-08-09 14:17 ` [PATCH 4/5] block: move the bdi from the request_queue to the gendisk Christoph Hellwig
2021-08-09 14:38 ` Johannes Thumshirn
2021-08-09 15:47 ` Jan Kara
2021-08-09 17:57 ` Jens Axboe
2021-08-09 21:29 ` Jan Kara
2021-08-10 16:44 ` Christoph Hellwig
2021-10-14 14:31 ` [sparc64] kernel OOPS (was: [PATCH 4/5] block: move the bdi from the request_queue to the gendisk) Anatoly Pugachev
2021-10-14 14:32 ` Christoph Hellwig
2021-10-14 20:27 ` Anatoly Pugachev
2021-08-09 14:17 ` [PATCH 5/5] block: remove the bd_bdi in struct block_device Christoph Hellwig
2021-08-09 14:55 ` Johannes Thumshirn
2021-08-09 15:49 ` Jan Kara
2021-08-09 21:42 ` move the bdi from the request_queue to the gendisk Jens Axboe
2021-08-10 19:36 ` Qian Cai
2021-08-10 20:02 ` Christoph Hellwig
2021-08-11 2:28 ` Qian Cai
2021-08-11 11:25 ` Jan Kara
2021-08-11 11:51 ` Christoph Hellwig
2021-08-11 12:47 ` Jan Kara
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