Merge tag 'for-5.16/block-2021-10-29' of git://git.kernel.dk/linux-block

Pull block updates from Jens Axboe:

 - mq-deadline accounting improvements (Bart)

 - blk-wbt timer fix (Andrea)

 - Untangle the block layer includes (Christoph)

 - Rework the poll support to be bio based, which will enable adding
   support for polling for bio based drivers (Christoph)

 - Block layer core support for multi-actuator drives (Damien)

 - blk-crypto improvements (Eric)

 - Batched tag allocation support (me)

 - Request completion batching support (me)

 - Plugging improvements (me)

 - Shared tag set improvements (John)

 - Concurrent queue quiesce support (Ming)

 - Cache bdev in ->private_data for block devices (Pavel)

 - bdev dio improvements (Pavel)

 - Block device invalidation and block size improvements (Xie)

 - Various cleanups, fixes, and improvements (Christoph, Jackie,
   Masahira, Tejun, Yu, Pavel, Zheng, me)

* tag 'for-5.16/block-2021-10-29' of git://git.kernel.dk/linux-block: (174 commits)
  blk-mq-debugfs: Show active requests per queue for shared tags
  block: improve readability of blk_mq_end_request_batch()
  virtio-blk: Use blk_validate_block_size() to validate block size
  loop: Use blk_validate_block_size() to validate block size
  nbd: Use blk_validate_block_size() to validate block size
  block: Add a helper to validate the block size
  block: re-flow blk_mq_rq_ctx_init()
  block: prefetch request to be initialized
  block: pass in blk_mq_tags to blk_mq_rq_ctx_init()
  block: add rq_flags to struct blk_mq_alloc_data
  block: add async version of bio_set_polled
  block: kill DIO_MULTI_BIO
  block: kill unused polling bits in __blkdev_direct_IO()
  block: avoid extra iter advance with async iocb
  block: Add independent access ranges support
  blk-mq: don't issue request directly in case that current is to be blocked
  sbitmap: silence data race warning
  blk-cgroup: synchronize blkg creation against policy deactivation
  block: refactor bio_iov_bvec_set()
  block: add single bio async direct IO helper
  ...

1 files changed, 5 insertions, 10 deletions

diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 1183f7872b71..504c20a2f33e 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -310,20 +310,13 @@ static void nbd_mark_nsock_dead(struct nbd_device *nbd, struct nbd_sock *nsock,
 	nsock->sent = 0;
 }
 
-static void nbd_size_clear(struct nbd_device *nbd)
-{
-	if (nbd->config->bytesize) {
-		set_capacity(nbd->disk, 0);
-		kobject_uevent(&nbd_to_dev(nbd)->kobj, KOBJ_CHANGE);
-	}
-}
-
 static int nbd_set_size(struct nbd_device *nbd, loff_t bytesize,
 		loff_t blksize)
 {
 	if (!blksize)
 		blksize = 1u << NBD_DEF_BLKSIZE_BITS;
-	if (blksize < 512 || blksize > PAGE_SIZE || !is_power_of_2(blksize))
+
+	if (blk_validate_block_size(blksize))
 		return -EINVAL;
 
 	nbd->config->bytesize = bytesize;
@@ -1237,7 +1230,9 @@ static void nbd_config_put(struct nbd_device *nbd)
 					&nbd->config_lock)) {
 		struct nbd_config *config = nbd->config;
 		nbd_dev_dbg_close(nbd);
-		nbd_size_clear(nbd);
+		invalidate_disk(nbd->disk);
+		if (nbd->config->bytesize)
+			kobject_uevent(&nbd_to_dev(nbd)->kobj, KOBJ_CHANGE);
 		if (test_and_clear_bit(NBD_RT_HAS_PID_FILE,
 				       &config->runtime_flags))
 			device_remove_file(disk_to_dev(nbd->disk), &pid_attr);