Merge tag 'for-6.16/block-20250523' of git://git.kernel.dk/linux

Pull block updates from Jens Axboe:

 - ublk updates:
      - Add support for updating the size of a ublk instance
      - Zero-copy improvements
      - Auto-registering of buffers for zero-copy
      - Series simplifying and improving GET_DATA and request lookup
      - Series adding quiesce support
      - Lots of selftests additions
      - Various cleanups

 - NVMe updates via Christoph:
      - add per-node DMA pools and use them for PRP/SGL allocations
        (Caleb Sander Mateos, Keith Busch)
      - nvme-fcloop refcounting fixes (Daniel Wagner)
      - support delayed removal of the multipath node and optionally
        support the multipath node for private namespaces (Nilay Shroff)
      - support shared CQs in the PCI endpoint target code (Wilfred
        Mallawa)
      - support admin-queue only authentication (Hannes Reinecke)
      - use the crc32c library instead of the crypto API (Eric Biggers)
      - misc cleanups (Christoph Hellwig, Marcelo Moreira, Hannes
        Reinecke, Leon Romanovsky, Gustavo A. R. Silva)

 - MD updates via Yu:
      - Fix that normal IO can be starved by sync IO, found by mkfs on
        newly created large raid5, with some clean up patches for bdev
        inflight counters

 - Clean up brd, getting rid of atomic kmaps and bvec poking

 - Add loop driver specifically for zoned IO testing

 - Eliminate blk-rq-qos calls with a static key, if not enabled

 - Improve hctx locking for when a plug has IO for multiple queues
   pending

 - Remove block layer bouncing support, which in turn means we can
   remove the per-node bounce stat as well

 - Improve blk-throttle support

 - Improve delay support for blk-throttle

 - Improve brd discard support

 - Unify IO scheduler switching. This should also fix a bunch of lockdep
   warnings we've been seeing, after enabling lockdep support for queue
   freezing/unfreezeing

 - Add support for block write streams via FDP (flexible data placement)
   on NVMe

 - Add a bunch of block helpers, facilitating the removal of a bunch of
   duplicated boilerplate code

 - Remove obsolete BLK_MQ pci and virtio Kconfig options

 - Add atomic/untorn write support to blktrace

 - Various little cleanups and fixes

* tag 'for-6.16/block-20250523' of git://git.kernel.dk/linux: (186 commits)
  selftests: ublk: add test for UBLK_F_QUIESCE
  ublk: add feature UBLK_F_QUIESCE
  selftests: ublk: add test case for UBLK_U_CMD_UPDATE_SIZE
  traceevent/block: Add REQ_ATOMIC flag to block trace events
  ublk: run auto buf unregisgering in same io_ring_ctx with registering
  io_uring: add helper io_uring_cmd_ctx_handle()
  ublk: remove io argument from ublk_auto_buf_reg_fallback()
  ublk: handle ublk_set_auto_buf_reg() failure correctly in ublk_fetch()
  selftests: ublk: add test for covering UBLK_AUTO_BUF_REG_FALLBACK
  selftests: ublk: support UBLK_F_AUTO_BUF_REG
  ublk: support UBLK_AUTO_BUF_REG_FALLBACK
  ublk: register buffer to local io_uring with provided buf index via UBLK_F_AUTO_BUF_REG
  ublk: prepare for supporting to register request buffer automatically
  ublk: convert to refcount_t
  selftests: ublk: make IO & device removal test more stressful
  nvme: rename nvme_mpath_shutdown_disk to nvme_mpath_remove_disk
  nvme: introduce multipath_always_on module param
  nvme-multipath: introduce delayed removal of the multipath head node
  nvme-pci: derive and better document max segments limits
  nvme-pci: use struct_size for allocation struct nvme_dev
  ...

6 files changed, 5 insertions, 9 deletions

diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index 5a3c670aec27..5522310bab8d 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -403,6 +403,7 @@ config SCSI_ACARD
 config SCSI_AHA152X
 	tristate "Adaptec AHA152X/2825 support"
 	depends on ISA && SCSI
+	depends on !HIGHMEM
 	select SCSI_SPI_ATTRS
 	select CHECK_SIGNATURE
 	help
@@ -795,6 +796,7 @@ config SCSI_PPA
 	tristate "IOMEGA parallel port (ppa - older drives)"
 	depends on SCSI && PARPORT_PC
 	depends on HAS_IOPORT
+	depends on !HIGHMEM
 	help
 	  This driver supports older versions of IOMEGA's parallel port ZIP
 	  drive (a 100 MB removable media device).
@@ -822,6 +824,7 @@ config SCSI_PPA
 config SCSI_IMM
 	tristate "IOMEGA parallel port (imm - newer drives)"
 	depends on SCSI && PARPORT_PC
+	depends on !HIGHMEM
 	help
 	  This driver supports newer versions of IOMEGA's parallel port ZIP
 	  drive (a 100 MB removable media device).
diff --git a/drivers/scsi/aha152x.c b/drivers/scsi/aha152x.c
index 4276f868cd91..e94c0a19c435 100644
--- a/drivers/scsi/aha152x.c
+++ b/drivers/scsi/aha152x.c
@@ -746,7 +746,6 @@ struct Scsi_Host *aha152x_probe_one(struct aha152x_setup *setup)
 	/* need to have host registered before triggering any interrupt */
 	list_add_tail(&HOSTDATA(shpnt)->host_list, &aha152x_host_list);
 
-	shpnt->no_highmem = true;
 	shpnt->io_port   = setup->io_port;
 	shpnt->n_io_port = IO_RANGE;
 	shpnt->irq       = setup->irq;
diff --git a/drivers/scsi/imm.c b/drivers/scsi/imm.c
index 1d4c7310f1a6..0821cf994b98 100644
--- a/drivers/scsi/imm.c
+++ b/drivers/scsi/imm.c
@@ -1224,7 +1224,6 @@ static int __imm_attach(struct parport *pb)
 	host = scsi_host_alloc(&imm_template, sizeof(imm_struct *));
 	if (!host)
 		goto out1;
-	host->no_highmem = true;
 	host->io_port = pb->base;
 	host->n_io_port = ports;
 	host->dma_channel = -1;
diff --git a/drivers/scsi/ppa.c b/drivers/scsi/ppa.c
index a06329b47851..1ed3171f1797 100644
--- a/drivers/scsi/ppa.c
+++ b/drivers/scsi/ppa.c
@@ -1104,7 +1104,6 @@ static int __ppa_attach(struct parport *pb)
 	host = scsi_host_alloc(&ppa_template, sizeof(ppa_struct *));
 	if (!host)
 		goto out1;
-	host->no_highmem = true;
 	host->io_port = pb->base;
 	host->n_io_port = ports;
 	host->dma_channel = -1;
diff --git a/drivers/scsi/scsi_ioctl.c b/drivers/scsi/scsi_ioctl.c
index 2fa45556e1ea..0ddc95bafc71 100644
--- a/drivers/scsi/scsi_ioctl.c
+++ b/drivers/scsi/scsi_ioctl.c
@@ -601,7 +601,7 @@ static int sg_scsi_ioctl(struct request_queue *q, bool open_for_write,
 	}
 
 	if (bytes) {
-		err = blk_rq_map_kern(q, rq, buffer, bytes, GFP_NOIO);
+		err = blk_rq_map_kern(rq, buffer, bytes, GFP_NOIO);
 		if (err)
 			goto error;
 	}
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 1b43013d72c0..144c72f0737a 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -313,8 +313,7 @@ retry:
 		return PTR_ERR(req);
 
 	if (bufflen) {
-		ret = blk_rq_map_kern(sdev->request_queue, req,
-				      buffer, bufflen, GFP_NOIO);
+		ret = blk_rq_map_kern(req, buffer, bufflen, GFP_NOIO);
 		if (ret)
 			goto out;
 	}
@@ -2004,9 +2003,6 @@ void scsi_init_limits(struct Scsi_Host *shost, struct queue_limits *lim)
 	lim->dma_alignment = max_t(unsigned int,
 		shost->dma_alignment, dma_get_cache_alignment() - 1);
 
-	if (shost->no_highmem)
-		lim->features |= BLK_FEAT_BOUNCE_HIGH;
-
 	/*
 	 * Propagate the DMA formation properties to the dma-mapping layer as
 	 * a courtesy service to the LLDDs.  This needs to check that the buses