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-rw-r--r--Documentation/ABI/stable/sysfs-block12
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/ABI/stable/sysfs-block b/Documentation/ABI/stable/sysfs-block
index 288626e8cb53..8dd3e84a8aad 100644
--- a/Documentation/ABI/stable/sysfs-block
+++ b/Documentation/ABI/stable/sysfs-block
@@ -544,6 +544,18 @@ Description:
CONFIG_BLK_DEV_THROTTLING_LOW is enabled.
+What: /sys/block/<disk>/queue/virt_boundary_mask
+Date: April 2021
+Contact: linux-block@vger.kernel.org
+Description:
+ [RO] This file shows the I/O segment memory alignment mask for
+ the block device. I/O requests to this device will be split
+ between segments wherever either the memory address of the end
+ of the previous segment or the memory address of the beginning
+ of the current segment is not aligned to virt_boundary_mask + 1
+ bytes.
+
+
What: /sys/block/<disk>/queue/wbt_lat_usec
Date: November 2016
Contact: linux-block@vger.kernel.org