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authorChristoph Hellwig <hch@lst.de>2022-06-19 09:05:51 +0300
committerJens Axboe <axboe@kernel.dk>2022-06-28 15:30:26 +0300
commit6f8191fdf41d3a53cc1d63fe2234e812c55a0092 (patch)
tree6d945fbe71814027c249acb00b86c6f35e6adfda /block/blk-sysfs.c
parent0e3534022f26ae51f7cf28347a253230604b6f4e (diff)
downloadlinux-6f8191fdf41d3a53cc1d63fe2234e812c55a0092.tar.xz
block: simplify disk shutdown
Set the queue dying flag and call blk_mq_exit_queue from del_gendisk for all disks that do not have separately allocated queues, and thus remove the need to call blk_cleanup_queue for them. Rename blk_cleanup_disk to blk_mq_destroy_queue to make it clear that this function is intended only for separately allocated blk-mq queues. This saves an extra queue freeze for devices without a separately allocated queue. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Link: https://lore.kernel.org/r/20220619060552.1850436-6-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-sysfs.c')
-rw-r--r--block/blk-sysfs.c5
1 files changed, 0 insertions, 5 deletions
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index 69e53d1a4f0e..9b211e519de8 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -755,11 +755,6 @@ static void blk_free_queue_rcu(struct rcu_head *rcu_head)
* decremented with blk_put_queue(). Once the refcount reaches 0 this function
* is called.
*
- * For drivers that have a request_queue on a gendisk and added with
- * __device_add_disk() the refcount to request_queue will reach 0 with
- * the last put_disk() called by the driver. For drivers which don't use
- * __device_add_disk() this happens with blk_cleanup_queue().
- *
* Drivers exist which depend on the release of the request_queue to be
* synchronous, it should not be deferred.
*