Merge tag 'block-5.10-2020-10-12' of git://git.kernel.dk/linux-block

Pull block updates from Jens Axboe:

 - Series of merge handling cleanups (Baolin, Christoph)

 - Series of blk-throttle fixes and cleanups (Baolin)

 - Series cleaning up BDI, seperating the block device from the
   backing_dev_info (Christoph)

 - Removal of bdget() as a generic API (Christoph)

 - Removal of blkdev_get() as a generic API (Christoph)

 - Cleanup of is-partition checks (Christoph)

 - Series reworking disk revalidation (Christoph)

 - Series cleaning up bio flags (Christoph)

 - bio crypt fixes (Eric)

 - IO stats inflight tweak (Gabriel)

 - blk-mq tags fixes (Hannes)

 - Buffer invalidation fixes (Jan)

 - Allow soft limits for zone append (Johannes)

 - Shared tag set improvements (John, Kashyap)

 - Allow IOPRIO_CLASS_RT for CAP_SYS_NICE (Khazhismel)

 - DM no-wait support (Mike, Konstantin)

 - Request allocation improvements (Ming)

 - Allow md/dm/bcache to use IO stat helpers (Song)

 - Series improving blk-iocost (Tejun)

 - Various cleanups (Geert, Damien, Danny, Julia, Tetsuo, Tian, Wang,
   Xianting, Yang, Yufen, yangerkun)

* tag 'block-5.10-2020-10-12' of git://git.kernel.dk/linux-block: (191 commits)
  block: fix uapi blkzoned.h comments
  blk-mq: move cancel of hctx->run_work to the front of blk_exit_queue
  blk-mq: get rid of the dead flush handle code path
  block: get rid of unnecessary local variable
  block: fix comment and add lockdep assert
  blk-mq: use helper function to test hw stopped
  block: use helper function to test queue register
  block: remove redundant mq check
  block: invoke blk_mq_exit_sched no matter whether have .exit_sched
  percpu_ref: don't refer to ref->data if it isn't allocated
  block: ratelimit handle_bad_sector() message
  blk-throttle: Re-use the throtl_set_slice_end()
  blk-throttle: Open code __throtl_de/enqueue_tg()
  blk-throttle: Move service tree validation out of the throtl_rb_first()
  blk-throttle: Move the list operation after list validation
  blk-throttle: Fix IO hang for a corner case
  blk-throttle: Avoid tracking latency if low limit is invalid
  blk-throttle: Avoid getting the current time if tg->last_finish_time is 0
  blk-throttle: Remove a meaningless parameter for throtl_downgrade_state()
  block: Remove redundant 'return' statement
  ...

3 files changed, 24 insertions, 29 deletions

diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c
index d10efb66cf19..df47557a02a3 100644
--- a/drivers/scsi/iscsi_tcp.c
+++ b/drivers/scsi/iscsi_tcp.c
@@ -970,8 +970,8 @@ static int iscsi_sw_tcp_slave_configure(struct scsi_device *sdev)
 	struct iscsi_conn *conn = session->leadconn;
 
 	if (conn->datadgst_en)
-		sdev->request_queue->backing_dev_info->capabilities
-			|= BDI_CAP_STABLE_WRITES;
+		blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES,
+				   sdev->request_queue);
 	blk_queue_dma_alignment(sdev->request_queue, 0);
 	return 0;
 }
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 16503e22691e..93f4374dce38 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -217,7 +217,7 @@ cache_type_store(struct device *dev, struct device_attribute *attr,
 			sd_print_sense_hdr(sdkp, &sshdr);
 		return -EINVAL;
 	}
-	revalidate_disk(sdkp->disk);
+	sd_revalidate_disk(sdkp->disk);
 	return count;
 }
 
@@ -1381,8 +1381,10 @@ static int sd_open(struct block_device *bdev, fmode_t mode)
 	if (!scsi_block_when_processing_errors(sdev))
 		goto error_out;
 
-	if (sdev->removable || sdkp->write_prot)
-		check_disk_change(bdev);
+	if (sdev->removable || sdkp->write_prot) {
+		if (bdev_check_media_change(bdev))
+			sd_revalidate_disk(bdev->bd_disk);
+	}
 
 	/*
 	 * If the drive is empty, just let the open fail.
@@ -1706,8 +1708,10 @@ static int sd_sync_cache(struct scsi_disk *sdkp, struct scsi_sense_hdr *sshdr)
 static void sd_rescan(struct device *dev)
 {
 	struct scsi_disk *sdkp = dev_get_drvdata(dev);
+	int ret;
 
-	revalidate_disk(sdkp->disk);
+	ret = sd_revalidate_disk(sdkp->disk);
+	revalidate_disk_size(sdkp->disk, ret == 0);
 }
 
 static int sd_ioctl(struct block_device *bdev, fmode_t mode,
@@ -1841,7 +1845,6 @@ static const struct block_device_operations sd_fops = {
 	.compat_ioctl		= sd_compat_ioctl,
 #endif
 	.check_events		= sd_check_events,
-	.revalidate_disk	= sd_revalidate_disk,
 	.unlock_native_capacity	= sd_unlock_native_capacity,
 	.report_zones		= sd_zbc_report_zones,
 	.pr_ops			= &sd_pr_ops,
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index 3b3a53c6a0de..2b43c0f97442 100644
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c
@@ -517,6 +517,17 @@ static blk_status_t sr_init_command(struct scsi_cmnd *SCpnt)
 	return ret;
 }
 
+static void sr_revalidate_disk(struct scsi_cd *cd)
+{
+	struct scsi_sense_hdr sshdr;
+
+	/* if the unit is not ready, nothing more to do */
+	if (scsi_test_unit_ready(cd->device, SR_TIMEOUT, MAX_RETRIES, &sshdr))
+		return;
+	sr_cd_check(&cd->cdi);
+	get_sectorsize(cd);
+}
+
 static int sr_block_open(struct block_device *bdev, fmode_t mode)
 {
 	struct scsi_cd *cd;
@@ -529,7 +540,8 @@ static int sr_block_open(struct block_device *bdev, fmode_t mode)
 
 	sdev = cd->device;
 	scsi_autopm_get_device(sdev);
-	check_disk_change(bdev);
+	if (bdev_check_media_change(bdev))
+		sr_revalidate_disk(cd);
 
 	mutex_lock(&cd->lock);
 	ret = cdrom_open(&cd->cdi, bdev, mode);
@@ -658,26 +670,6 @@ static unsigned int sr_block_check_events(struct gendisk *disk,
 	return ret;
 }
 
-static int sr_block_revalidate_disk(struct gendisk *disk)
-{
-	struct scsi_sense_hdr sshdr;
-	struct scsi_cd *cd;
-
-	cd = scsi_cd_get(disk);
-	if (!cd)
-		return -ENXIO;
-
-	/* if the unit is not ready, nothing more to do */
-	if (scsi_test_unit_ready(cd->device, SR_TIMEOUT, MAX_RETRIES, &sshdr))
-		goto out;
-
-	sr_cd_check(&cd->cdi);
-	get_sectorsize(cd);
-out:
-	scsi_cd_put(cd);
-	return 0;
-}
-
 static const struct block_device_operations sr_bdops =
 {
 	.owner		= THIS_MODULE,
@@ -688,7 +680,6 @@ static const struct block_device_operations sr_bdops =
 	.compat_ioctl	= sr_block_compat_ioctl,
 #endif
 	.check_events	= sr_block_check_events,
-	.revalidate_disk = sr_block_revalidate_disk,
 };
 
 static int sr_open(struct cdrom_device_info *cdi, int purpose)
@@ -802,6 +793,7 @@ static int sr_probe(struct device *dev)
 
 	dev_set_drvdata(dev, cd);
 	disk->flags |= GENHD_FL_REMOVABLE;
+	sr_revalidate_disk(cd);
 	device_add_disk(&sdev->sdev_gendev, disk, NULL);
 
 	sdev_printk(KERN_DEBUG, sdev,