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block: drain file system I/O on del_gendisk

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Instead of delaying draining of file system I/O related items like the
blk-qos queues, the integrity read workqueue and timeouts only when the
request_queue is removed, do that when del_gendisk is called.  This is
important for SCSI where the upper level drivers that control the gendisk
are separate entities, and the disk can be freed much earlier than the
request_queue, or can even be unbound without tearing down the queue.

Fixes: edb0872f44 ("block: move the bdi from the request_queue to the gendisk")
Reported-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Darrick J. Wong <djwong@kernel.org>
Link: https://lore.kernel.org/r/20210929071241.934472-5-hch@lst.de
Tested-by: Yi Zhang <yi.zhang@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-09-29 09:12:40 +02:00 • committed by Jens Axboe
parent a6741536f4
commit 8e141f9eb8
4 changed files with 35 additions and 15 deletions
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1
include/linux/genhd.h
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@ -149,6 +149,7 @@ struct gendisk {
unsigned long state;
#define GD_NEED_PART_SCAN 0
#define GD_READ_ONLY 1
#define GD_DEAD 2
struct mutex open_mutex; /* open/close mutex */
unsigned open_partitions; /* number of open partitions */