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 --- 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//queue/zoned_qd1_writes +Date: January 2026 +Contact: Damien Le Moal +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//hidden Date: March 2023 -- 2.53.0