[PATCH v7 10/11] docs: sysfs-block-device: improve ncq_prio_enable documentation
STALE1873d
LANDED
From: Damien Le Moal <hidden>
Date: 2021-08-16 01:45:15
Also in:
linux-ide
Subsystem:
the rest · Maintainer:
Linus Torvalds
Revision v7 of 2 in this series; landed in mainline as 5b8a2345e64b on 2021-08-18.
Revisions (2)
- v4 [diff vs current]
- v7 current
From: Niklas Cassel <redacted> NCQ priority is an optional feature of the NCQ feature set and should not be confused with the NCQ feature set itself. Clarify the description of the ncq_prio_enable attribute to avoid this confusion. Also add the missing documentation for the equivalent sas_ncq_prio_enable attribute. Signed-off-by: Niklas Cassel <redacted> Signed-off-by: Damien Le Moal <redacted> --- Documentation/ABI/testing/sysfs-block-device | 20 +++++++++++++++++--- 1 file changed, 17 insertions(+), 3 deletions(-)
diff --git a/Documentation/ABI/testing/sysfs-block-device b/Documentation/ABI/testing/sysfs-block-device
index aa0fb500e3c9..cf1013df4b92 100644
--- a/Documentation/ABI/testing/sysfs-block-device
+++ b/Documentation/ABI/testing/sysfs-block-device@@ -55,6 +55,20 @@ Date: Oct, 2016 KernelVersion: v4.10 Contact: linux-ide@vger.kernel.org Description: - (RW) Write to the file to turn on or off the SATA ncq (native - command queueing) support. By default this feature is turned - off. + (RW) Write to the file to turn on or off the SATA NCQ (native + command queueing) priority support. By default this feature is + turned off. If the device does not support the SATA NCQ + priority feature, writing "1" to this file results in an error. + + +What: /sys/block/*/device/sas_ncq_prio_enable +Date: Oct, 2016 +KernelVersion: v4.10 +Contact: linux-ide@vger.kernel.org +Description: + (RW) This is the equivalent of the ncq_prio_enable attribute + file for SATA devices connected to a SAS host-bus-adapter + (HBA) implementing support for the SATA NCQ priority feature. + This file does not exist if the HBA driver does not implement + support for the SATA NCQ priority feature, regardless of the + device support for this feature.
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2.31.1