This option only enables generic Block IO controller infrastructure.
One needs to also enable actual IO controlling logic/policy. For
- enabling proportional weight division of disk bandwidth in CFQ seti
- CONFIG_CFQ_GROUP_IOSCHED=y and for enabling throttling policy set
- CONFIG_BLK_THROTTLE=y.
+ enabling proportional weight division of disk bandwidth in CFQ, set
+ CONFIG_CFQ_GROUP_IOSCHED=y; for enabling throttling policy, set
+ CONFIG_BLK_DEV_THROTTLING=y.
See Documentation/cgroups/blkio-controller.txt for more information.