blkio: Introduce blkio controller cgroup interface

[safe/jmp/linux-2.6] / block / Kconfig

diff --git a/block/Kconfig b/block/Kconfig
index 9be0b56..6ba1a8e 100644 (file)
--- 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