[PATCH v3 8/8] Documentation: ABI: stable: document the zoned_qd1_writes attribute

[Damien Le Moal <dlemoal@kernel.org>]

Update the documentation file Documentation/ABI/stable/sysfs-block to
describe the zoned_qd1_writes sysfs queue attribute file.

Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
---
 Documentation/ABI/stable/sysfs-block | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/Documentation/ABI/stable/sysfs-block b/Documentation/ABI/stable/sysfs-block
index 09a9d4aca0fd..bc3056af5eb2 100644
--- a/Documentation/ABI/stable/sysfs-block
+++ b/Documentation/ABI/stable/sysfs-block
@@ -886,6 +886,21 @@ Description:
 		zone commands, they will be treated as regular block devices and
 		zoned will report "none".
 
+What:		/sys/block/<disk>/queue/zoned_qd1_writes
+Date:		January 2026
+Contact:	Damien Le Moal <dlemoal@kernel.org>
+Description:
+		[RW] zoned_qd1_writes indicates if write operations to a zoned
+		block device are being handled using a single issuer context (a
+		kernel thread) operating at a maximum queue depth of 1. A value
+		of 0 is always reported for regular block devices and for zoned
+		block devices that are not rotational devices (e.g. ZNS SSDs or
+		zoned UFS devices). For rotational zoned block devices (e.g. SMR
+		HDDs) the default value is 1. Since this default may not be
+		appropriate for some devices, e.g. remotely connected devices
+		over high latency networks, the user can disable this feature by
+		setting this attribute to 0.
+
 
 What:		/sys/block/<disk>/hidden
 Date:		March 2023
-- 
2.53.0