1 files changed, 13 insertions, 0 deletions

diff --git a/block/Kconfig b/block/Kconfig
index 9be0b56eaee1..6ba1a8e3388b 100644
--- a/block/Kconfig
+++ b/block/Kconfig
@@ -77,6 +77,19 @@ config BLK_DEV_INTEGRITY
         T10/SCSI Data Integrity Field or the T13/ATA External Path
         Protection.  If in doubt, say N.
 
+config BLK_CGROUP
+        bool
+        depends on CGROUPS
+        default n
+        ---help---
+        Generic block IO controller cgroup interface. This is the common
+        cgroup interface which should be used by various IO controlling
+        policies.
+
+        Currently, CFQ IO scheduler uses it to recognize task groups and
+        control disk bandwidth allocation (proportional time slice allocation)
+        to such task groups.
+
 endif # BLOCK
 
 config BLOCK_COMPAT