Subject: [PATCH] drbd: Fix block layer warning

drbdadm down r0 trigger kernel warning

drbd_reconsider_queue_parameters
 + get_common_queue_limits
 |  blk_set_stacking_limits
 |   lim->max_zone_append_sectors = UINT_MAX; <=== set
 |
 + ... ...
 |
 + queue_limits_commit_update
    blk_validate_limits
     WARN_ON_ONCE(lim->max_zone_append_sectors) <== trigger

log:

```
Jan 08 14:43:37 tw-2 kernel: drbd r0/0 drbd0: disk( UpToDate -> Detaching ) [down]
Jan 08 14:43:37 tw-2 kernel: drbd r0/0 drbd0: disk( Detaching -> Diskless ) [go-diskless]
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1773 at block/blk-settings.c:75 blk_validate_limits+0x41d/0x440
... ...
Call Trace:
 <TASK>
 ? blk_validate_limits+0x41d/0x440
 ? __warn.cold+0x93/0xf7
 ? blk_validate_limits+0x41d/0x440
 ? report_bug+0xff/0x140
 ? handle_bug+0x58/0x90
 ? exc_invalid_op+0x17/0x70
 ? asm_exc_invalid_op+0x1a/0x20
 ? blk_validate_limits+0x41d/0x440
 queue_limits_commit_update+0x1b/0xa0
 drbd_reconsider_queue_parameters+0x1d2/0x240 [drbd 9a1d8dc285f5b1fe449ab4495af7893c660ff3ea]
 w_after_state_change+0x1997/0x20a0 [drbd 9a1d8dc285f5b1fe449ab4495af7893c660ff3ea]
 ? idr_get_next_ul+0xee/0x110
 ? do_unqueued_device_work+0x1da/0x2a0 [drbd 9a1d8dc285f5b1fe449ab4495af7893c660ff3ea]
 drbd_worker+0x109/0x530 [drbd 9a1d8dc285f5b1fe449ab4495af7893c660ff3ea]
 ? __pfx_autoremove_wake_function+0x10/0x10
 ? __pfx_drbd_thread_setup+0x10/0x10 [drbd 9a1d8dc285f5b1fe449ab4495af7893c660ff3ea]
 drbd_thread_setup+0x6d/0x170 [drbd 9a1d8dc285f5b1fe449ab4495af7893c660ff3ea]
 kthread+0xcf/0x100
 ? __pfx_kthread+0x10/0x10
 ret_from_fork+0x31/0x50
 ? __pfx_kthread+0x10/0x10
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Jan 08 14:43:37 tw-2 kernel: ---[ end trace 0000000000000000 ]---
Jan 08 14:43:37 tw-2 kernel: drbd r0/0 drbd0: setting new queue limits failed
Jan 08 14:43:37 tw-2 kernel: drbd r0/0 drbd0: drbd_bm_resize called with capacity == 0
Jan 08 14:43:37 tw-2 kernel: drbd /unregistered/r0: Terminating worker thread

---[ end trace 0000000000000000 ]---
drbd /unregistered/r0/0 drbd0: setting new queue limits failed
drbd /unregistered/r0: Terminating worker thread
```

Signed-off-by: Heming Zhao <heming.zhao@suse.com>
---

diff -Nupr a/drbd/drbd_nl.c b/drbd/drbd_nl.c
--- a/drbd/drbd_nl.c	2025-01-08 14:25:56.369599242 +0800
+++ b/drbd/drbd_nl.c	2025-01-08 14:32:07.260157474 +0800
@@ -2068,6 +2068,8 @@ static void get_common_queue_limits(stru
 	common_limits->physical_block_size = device->device_conf.block_size;
 	common_limits->logical_block_size = device->device_conf.block_size;
 	common_limits->io_min = device->device_conf.block_size;
+	if (!(common_limits->features & BLK_FEAT_ZONED))
+		common_limits->max_zone_append_sectors = 0;
 
 	rcu_read_lock();
 	for_each_peer_device_rcu(peer_device, device) {