diff options
Diffstat (limited to 'Documentation/ABI/stable')
| -rw-r--r-- | Documentation/ABI/stable/sysfs-block | 15 | ||||
| -rw-r--r-- | Documentation/ABI/stable/sysfs-class-backlight | 7 |
2 files changed, 21 insertions, 1 deletions
diff --git a/Documentation/ABI/stable/sysfs-block b/Documentation/ABI/stable/sysfs-block index 11545c9e2e93..4ba771b56b3b 100644 --- a/Documentation/ABI/stable/sysfs-block +++ b/Documentation/ABI/stable/sysfs-block @@ -547,6 +547,21 @@ Description: [RO] Maximum size in bytes of a single element in a DMA scatter/gather list. +What: /sys/block/<disk>/queue/max_write_streams +Date: November 2024 +Contact: linux-block@vger.kernel.org +Description: + [RO] Maximum number of write streams supported, 0 if not + supported. If supported, valid values are 1 through + max_write_streams, inclusive. + +What: /sys/block/<disk>/queue/write_stream_granularity +Date: November 2024 +Contact: linux-block@vger.kernel.org +Description: + [RO] Granularity of a write stream in bytes. The granularity + of a write stream is the size that should be discarded or + overwritten together to avoid write amplification in the device. What: /sys/block/<disk>/queue/max_segments Date: March 2010 diff --git a/Documentation/ABI/stable/sysfs-class-backlight b/Documentation/ABI/stable/sysfs-class-backlight index 6102d6bebdf9..40b8c46b95b2 100644 --- a/Documentation/ABI/stable/sysfs-class-backlight +++ b/Documentation/ABI/stable/sysfs-class-backlight @@ -26,7 +26,12 @@ Date: March 2006 KernelVersion: 2.6.17 Contact: Richard Purdie <rpurdie@rpsys.net> Description: - Show the actual brightness by querying the hardware. + Show the actual brightness by querying the hardware. Due + to implementation differences in hardware this may not + match the value in 'brightness'. For example some hardware + may treat blanking differently or have custom power saving + features. Userspace should generally use the values in + 'brightness' to make decisions. Users: HAL What: /sys/class/backlight/<backlight>/max_brightness |