[PATCH 6.0 07/74] blk-throttle: pass a gendisk to blk_throtl_init and blk_throtl_exit

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

From: Christoph Hellwig <hch@lst.de>

[ Upstream commit e13793bae65919cd3e6a7827f8d30f4dbb8584ee ]

Pass the gendisk to blk_throtl_init and blk_throtl_exit as part of moving
the blk-cgroup infrastructure to be gendisk based.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Andreas Herrmann <aherrmann@suse.de>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20220921180501.1539876-13-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Stable-dep-of: 813e693023ba ("blk-iolatency: Fix memory leak on add_disk() failures")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 block/blk-cgroup.c   | 6 +++---
 block/blk-throttle.c | 7 +++++--
 block/blk-throttle.h | 8 ++++----
 3 files changed, 12 insertions(+), 9 deletions(-)

diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
index 4943f36d8a84..afe802e1180f 100644
--- a/block/blk-cgroup.c
+++ b/block/blk-cgroup.c
@@ -1277,7 +1277,7 @@ int blkcg_init_disk(struct gendisk *disk)
 	if (ret)
 		goto err_destroy_all;
 
-	ret = blk_throtl_init(q);
+	ret = blk_throtl_init(disk);
 	if (ret)
 		goto err_ioprio_exit;
 
@@ -1288,7 +1288,7 @@ int blkcg_init_disk(struct gendisk *disk)
 	return 0;
 
 err_throtl_exit:
-	blk_throtl_exit(q);
+	blk_throtl_exit(disk);
 err_ioprio_exit:
 	blk_ioprio_exit(q);
 err_destroy_all:
@@ -1304,7 +1304,7 @@ int blkcg_init_disk(struct gendisk *disk)
 void blkcg_exit_disk(struct gendisk *disk)
 {
 	blkg_destroy_all(disk->queue);
-	blk_throtl_exit(disk->queue);
+	blk_throtl_exit(disk);
 }
 
 static void blkcg_bind(struct cgroup_subsys_state *root_css)
diff --git a/block/blk-throttle.c b/block/blk-throttle.c
index 35cf744ea9d1..f84a6ed440c9 100644
--- a/block/blk-throttle.c
+++ b/block/blk-throttle.c
@@ -2276,8 +2276,9 @@ void blk_throtl_bio_endio(struct bio *bio)
 }
 #endif
 
-int blk_throtl_init(struct request_queue *q)
+int blk_throtl_init(struct gendisk *disk)
 {
+	struct request_queue *q = disk->queue;
 	struct throtl_data *td;
 	int ret;
 
@@ -2319,8 +2320,10 @@ int blk_throtl_init(struct request_queue *q)
 	return ret;
 }
 
-void blk_throtl_exit(struct request_queue *q)
+void blk_throtl_exit(struct gendisk *disk)
 {
+	struct request_queue *q = disk->queue;
+
 	BUG_ON(!q->td);
 	del_timer_sync(&q->td->service_queue.pending_timer);
 	throtl_shutdown_wq(q);
diff --git a/block/blk-throttle.h b/block/blk-throttle.h
index ee7299e6dea9..e8c2b3d4a18b 100644
--- a/block/blk-throttle.h
+++ b/block/blk-throttle.h
@@ -159,14 +159,14 @@ static inline struct throtl_grp *blkg_to_tg(struct blkcg_gq *blkg)
  * Internal throttling interface
  */
 #ifndef CONFIG_BLK_DEV_THROTTLING
-static inline int blk_throtl_init(struct request_queue *q) { return 0; }
-static inline void blk_throtl_exit(struct request_queue *q) { }
+static inline int blk_throtl_init(struct gendisk *disk) { return 0; }
+static inline void blk_throtl_exit(struct gendisk *disk) { }
 static inline void blk_throtl_register_queue(struct request_queue *q) { }
 static inline bool blk_throtl_bio(struct bio *bio) { return false; }
 static inline void blk_throtl_cancel_bios(struct request_queue *q) { }
 #else /* CONFIG_BLK_DEV_THROTTLING */
-int blk_throtl_init(struct request_queue *q);
-void blk_throtl_exit(struct request_queue *q);
+int blk_throtl_init(struct gendisk *disk);
+void blk_throtl_exit(struct gendisk *disk);
 void blk_throtl_register_queue(struct request_queue *q);
 bool __blk_throtl_bio(struct bio *bio);
 void blk_throtl_cancel_bios(struct request_queue *q);
-- 
2.35.1