Merge tag 'for-5.18/block-2022-03-18' of git://git.kernel.dk/linux-block

Pull block updates from Jens Axboe:

 - BFQ cleanups and fixes (Yu, Zhang, Yahu, Paolo)

 - blk-rq-qos completion fix (Tejun)

 - blk-cgroup merge fix (Tejun)

 - Add offline error return value to distinguish it from an IO error on
   the device (Song)

 - IO stats fixes (Zhang, Christoph)

 - blkcg refcount fixes (Ming, Yu)

 - Fix for indefinite dispatch loop softlockup (Shin'ichiro)

 - blk-mq hardware queue management improvements (Ming)

 - sbitmap dead code removal (Ming, John)

 - Plugging merge improvements (me)

 - Show blk-crypto capabilities in sysfs (Eric)

 - Multiple delayed queue run improvement (David)

 - Block throttling fixes (Ming)

 - Start deprecating auto module loading based on dev_t (Christoph)

 - bio allocation improvements (Christoph, Chaitanya)

 - Get rid of bio_devname (Christoph)

 - bio clone improvements (Christoph)

 - Block plugging improvements (Christoph)

 - Get rid of genhd.h header (Christoph)

 - Ensure drivers use appropriate flush helpers (Christoph)

 - Refcounting improvements (Christoph)

 - Queue initialization and teardown improvements (Ming, Christoph)

 - Misc fixes/improvements (Barry, Chaitanya, Colin, Dan, Jiapeng,
   Lukas, Nian, Yang, Eric, Chengming)

* tag 'for-5.18/block-2022-03-18' of git://git.kernel.dk/linux-block: (127 commits)
  block: cancel all throttled bios in del_gendisk()
  block: let blkcg_gq grab request queue's refcnt
  block: avoid use-after-free on throttle data
  block: limit request dispatch loop duration
  block/bfq-iosched: Fix spelling mistake "tenative" -> "tentative"
  sr: simplify the local variable initialization in sr_block_open()
  block: don't merge across cgroup boundaries if blkcg is enabled
  block: fix rq-qos breakage from skipping rq_qos_done_bio()
  block: flush plug based on hardware and software queue order
  block: ensure plug merging checks the correct queue at least once
  block: move rq_qos_exit() into disk_release()
  block: do more work in elevator_exit
  block: move blk_exit_queue into disk_release
  block: move q_usage_counter release into blk_queue_release
  block: don't remove hctx debugfs dir from blk_mq_exit_queue
  block: move blkcg initialization/destroy into disk allocation/release handler
  sr: implement ->free_disk to simplify refcounting
  sd: implement ->free_disk to simplify refcounting
  sd: delay calling free_opal_dev
  sd: call sd_zbc_release_disk before releasing the scsi_device reference
  ...

1 files changed, 8 insertions, 4 deletions

diff --git a/drivers/scsi/sd.h b/drivers/scsi/sd.h
index 2e5932bde43d..0a33a4b68ffb 100644
--- a/drivers/scsi/sd.h
+++ b/drivers/scsi/sd.h
@@ -68,9 +68,13 @@ enum {
 };
 
 struct scsi_disk {
-	struct scsi_driver *driver;	/* always &sd_template */
 	struct scsi_device *device;
-	struct device	dev;
+
+	/*
+	 * disk_dev is used to show attributes in /sys/class/scsi_disk/,
+	 * but otherwise not really needed.  Do not use for refcounting.
+	 */
+	struct device	disk_dev;
 	struct gendisk	*disk;
 	struct opal_dev *opal_dev;
 #ifdef CONFIG_BLK_DEV_ZONED
@@ -127,11 +131,11 @@ struct scsi_disk {
 	unsigned	security : 1;
 	unsigned	ignore_medium_access_errors : 1;
 };
-#define to_scsi_disk(obj) container_of(obj,struct scsi_disk,dev)
+#define to_scsi_disk(obj) container_of(obj, struct scsi_disk, disk_dev)
 
 static inline struct scsi_disk *scsi_disk(struct gendisk *disk)
 {
-	return container_of(disk->private_data, struct scsi_disk, driver);
+	return disk->private_data;
 }
 
 #define sd_printk(prefix, sdsk, fmt, a...)				\