dynamically on an algorithm loosely based on CoDel, factoring in
the realtime performance of the disk.
+config BLK_WBT_MQ
+ bool "Enable writeback throttling by default"
+ default y
+ depends on BLK_WBT
+ help
+ Enable writeback throttling by default for request-based block devices.
+
config BLK_CGROUP_IOLATENCY
bool "Enable support for latency based cgroup IO protection"
depends on BLK_CGROUP=y
Note, this is an experimental interface and could be changed someday.
+config BLK_CGROUP_FC_APPID
+ bool "Enable support to track FC I/O Traffic across cgroup applications"
+ depends on BLK_CGROUP && NVME_FC
+ help
+ Enabling this option enables the support to track FC I/O traffic across
+ cgroup applications. It enables the Fabric and the storage targets to
+ identify, monitor, and handle FC traffic based on VM tags by inserting
+ application specific identification into the FC frame.
+
config BLK_CGROUP_IOCOST
bool "Enable support for cost model based cgroup IO controller"
depends on BLK_CGROUP=y
distributes IO capacity between different groups based on
their share of the overall weight distribution.
-config BLK_WBT_MQ
- bool "Multiqueue writeback throttling"
- default y
- depends on BLK_WBT
+config BLK_CGROUP_IOPRIO
+ bool "Cgroup I/O controller for assigning an I/O priority class"
+ depends on BLK_CGROUP
help
- Enable writeback throttling by default on multiqueue devices.
+ Enable the .prio interface for assigning an I/O priority class to
+ requests. The I/O priority class affects the order in which an I/O
+ scheduler and block devices process requests. Only some I/O schedulers
+ and some block devices support I/O priorities.
config BLK_DEBUG_FS
bool "Block layer debugging information in debugfs"