From: Damien Le Moal Date: Fri, 27 Feb 2026 13:19:51 +0000 (+0900) Subject: Documentation: ABI: stable: document the zoned_qd1_writes attribute X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b0e497db68ae5b0af8e9a0bd1a761607757d5dfe;p=thirdparty%2Fkernel%2Flinux.git Documentation: ABI: stable: document the zoned_qd1_writes attribute 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 Reviewed-by: Hannes Reinecke Reviewed-by: Christoph Hellwig Reviewed-by: Bart Van Assche Reviewed-by: Johannes Thumshirn Signed-off-by: Jens Axboe --- diff --git a/Documentation/ABI/stable/sysfs-block b/Documentation/ABI/stable/sysfs-block index 09a9d4aca0fd5..900b3fc4c72d0 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. This + attribute is visible only for zoned block devices. The default + value for zoned block devices that are not rotational devices + (e.g. ZNS SSDs or zoned UFS devices) is 0. 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