Revert "block: pre-calculate max_zone_append_sectors"

This causes issue on, at least, nvme-mpath where my boot fails with:

WARNING: CPU: 354 PID: 2729 at block/blk-settings.c:75 blk_validate_limits+0x356/0x380
Modules linked in: tg3(+) nvme usbcore scsi_mod ptp i2c_piix4 libphy nvme_core crc32c_intel scsi_common usb_common pps_core i2c_smbus
CPU: 354 UID: 0 PID: 2729 Comm: kworker/u2061:1 Not tainted 6.12.0-rc6+ #181
Hardware name: Dell Inc. PowerEdge R7625/06444F, BIOS 1.8.3 04/02/2024
Workqueue: async async_run_entry_fn
RIP: 0010:blk_validate_limits+0x356/0x380
Code: f6 47 01 04 75 28 83 bf 94 00 00 00 00 75 39 83 bf 98 00 00 00 00 75 34 83 7f 68 00 75 32 31 c0 83 7f 5c 00 0f 84 9b fd ff ff <0f> 0b eb 13 0f 0b eb 0f 48 c7 c0 74 12 58 92 48 89 c7 e8 13 76 46
RSP: 0018:ffffa8a1dfb93b30 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff9232829c8388 RCX: 0000000000000088
RDX: 0000000000000080 RSI: 0000000000000200 RDI: ffffa8a1dfb93c38
RBP: 000000000000000c R08: 00000000ffffffff R09: 000000000000ffff
R10: 0000000000000000 R11: 0000000000000000 R12: ffff9232829b9000
R13: ffff9232829b9010 R14: ffffa8a1dfb93c38 R15: ffffa8a1dfb93c38
FS:  0000000000000000(0000) GS:ffff923867c80000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055c1b92480a8 CR3: 0000002484ff0002 CR4: 0000000000370ef0
Call Trace:
 <TASK>
 ? __warn+0xca/0x1a0
 ? blk_validate_limits+0x356/0x380
 ? report_bug+0x11a/0x1a0
 ? handle_bug+0x5e/0x90
 ? exc_invalid_op+0x16/0x40
 ? asm_exc_invalid_op+0x16/0x20
 ? blk_validate_limits+0x356/0x380
 blk_alloc_queue+0x7a/0x250
 __blk_alloc_disk+0x39/0x80
 nvme_mpath_alloc_disk+0x13d/0x1b0 [nvme_core]
 nvme_scan_ns+0xcc7/0x1010 [nvme_core]
 async_run_entry_fn+0x27/0x120
 process_scheduled_works+0x1a0/0x360
 worker_thread+0x2bc/0x350
 ? pr_cont_work+0x1b0/0x1b0
 kthread+0x111/0x120
 ? kthread_unuse_mm+0x90/0x90
 ret_from_fork+0x30/0x40
 ? kthread_unuse_mm+0x90/0x90
 ret_from_fork_asm+0x11/0x20
 </TASK>
---[ end trace 0000000000000000 ]---

presumably due to max_zone_append_sectors not being cleared to zero,
resulting in blk_validate_zoned_limits() complaining and failing.

This reverts commit 2a8f6153e1c2db06a537a5c9d61102eb591776f1.

Signed-off-by: Jens Axboe <axboe@kernel.dk>

7 files changed, 9 insertions, 7 deletions

diff --git a/drivers/block/null_blk/zoned.c b/drivers/block/null_blk/zoned.c
index 0d5f9bf95229..9bc768b2ca56 100644
--- a/drivers/block/null_blk/zoned.c
+++ b/drivers/block/null_blk/zoned.c
@@ -166,7 +166,7 @@ int null_init_zoned_dev(struct nullb_device *dev,
 
 	lim->features |= BLK_FEAT_ZONED;
 	lim->chunk_sectors = dev->zone_size_sects;
-	lim->max_hw_zone_append_sectors = dev->zone_append_max_sectors;
+	lim->max_zone_append_sectors = dev->zone_append_max_sectors;
 	lim->max_open_zones = dev->zone_max_open;
 	lim->max_active_zones = dev->zone_max_active;
 	return 0;
diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c
index 8d938b2b41ee..59951e7c2593 100644
--- a/drivers/block/ublk_drv.c
+++ b/drivers/block/ublk_drv.c
@@ -2270,7 +2270,7 @@ static int ublk_ctrl_start_dev(struct ublk_device *ub, struct io_uring_cmd *cmd)
 		lim.features |= BLK_FEAT_ZONED;
 		lim.max_active_zones = p->max_active_zones;
 		lim.max_open_zones =  p->max_open_zones;
-		lim.max_hw_zone_append_sectors = p->max_zone_append_sectors;
+		lim.max_zone_append_sectors = p->max_zone_append_sectors;
 	}
 
 	if (ub->params.basic.attrs & UBLK_ATTR_VOLATILE_CACHE) {
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index 0e99a4714928..194417abc105 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -784,7 +784,7 @@ static int virtblk_read_zoned_limits(struct virtio_blk *vblk,
 			wg, v);
 		return -ENODEV;
 	}
-	lim->max_hw_zone_append_sectors = v;
+	lim->max_zone_append_sectors = v;
 	dev_dbg(&vdev->dev, "max append sectors = %u\n", v);
 
 	return 0;
diff --git a/drivers/md/dm-zone.c b/drivers/md/dm-zone.c
index 20edd3fabbab..c0d41c36e06e 100644
--- a/drivers/md/dm-zone.c
+++ b/drivers/md/dm-zone.c
@@ -344,7 +344,7 @@ int dm_set_zones_restrictions(struct dm_table *t, struct request_queue *q,
 		clear_bit(DMF_EMULATE_ZONE_APPEND, &md->flags);
 	} else {
 		set_bit(DMF_EMULATE_ZONE_APPEND, &md->flags);
-		lim->max_hw_zone_append_sectors = 0;
+		lim->max_zone_append_sectors = 0;
 	}
 
 	/*
@@ -379,7 +379,7 @@ int dm_set_zones_restrictions(struct dm_table *t, struct request_queue *q,
 	if (!zlim.mapped_nr_seq_zones) {
 		lim->max_open_zones = 0;
 		lim->max_active_zones = 0;
-		lim->max_hw_zone_append_sectors = 0;
+		lim->max_zone_append_sectors = 0;
 		lim->zone_write_granularity = 0;
 		lim->chunk_sectors = 0;
 		lim->features &= ~BLK_FEAT_ZONED;
diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c
index c26cb7d3a2e5..6a15873055b9 100644
--- a/drivers/nvme/host/multipath.c
+++ b/drivers/nvme/host/multipath.c
@@ -636,7 +636,7 @@ int nvme_mpath_alloc_disk(struct nvme_ctrl *ctrl, struct nvme_ns_head *head)
 	if (head->ids.csi == NVME_CSI_ZNS)
 		lim.features |= BLK_FEAT_ZONED;
 	else
-		lim.max_hw_zone_append_sectors = 0;
+		lim.max_zone_append_sectors = 0;
 
 	head->disk = blk_alloc_disk(&lim, ctrl->numa_node);
 	if (IS_ERR(head->disk))
diff --git a/drivers/nvme/host/zns.c b/drivers/nvme/host/zns.c
index 382949e18c6a..9a06f9d98cd6 100644
--- a/drivers/nvme/host/zns.c
+++ b/drivers/nvme/host/zns.c
@@ -111,7 +111,7 @@ void nvme_update_zone_info(struct nvme_ns *ns, struct queue_limits *lim,
 	lim->features |= BLK_FEAT_ZONED;
 	lim->max_open_zones = zi->max_open_zones;
 	lim->max_active_zones = zi->max_active_zones;
-	lim->max_hw_zone_append_sectors = ns->ctrl->max_zone_append;
+	lim->max_zone_append_sectors = ns->ctrl->max_zone_append;
 	lim->chunk_sectors = ns->head->zsze =
 		nvme_lba_to_sect(ns->head, zi->zone_size);
 }
diff --git a/drivers/scsi/sd_zbc.c b/drivers/scsi/sd_zbc.c
index de5c54c057ec..ee2b74238758 100644
--- a/drivers/scsi/sd_zbc.c
+++ b/drivers/scsi/sd_zbc.c
@@ -634,6 +634,8 @@ int sd_zbc_read_zones(struct scsi_disk *sdkp, struct queue_limits *lim,
 		lim->max_open_zones = sdkp->zones_max_open;
 	lim->max_active_zones = 0;
 	lim->chunk_sectors = logical_to_sectors(sdkp->device, zone_blocks);
+	/* Enable block layer zone append emulation */
+	lim->max_zone_append_sectors = 0;
 
 	return 0;