Merge branch 'for-torvalds' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw...

[pandora-kernel.git] / drivers / block / Kconfig

diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig
index 83c32cb..717d6e4 100644 (file)
--- a/drivers/block/Kconfig
+++ b/drivers/block/Kconfig
@@ -470,6 +470,27 @@ config XEN_BLKDEV_FRONTEND
          block device driver.  It communicates with a back-end driver
          in another domain which drives the actual block device.
 
+config XEN_BLKDEV_BACKEND
+       tristate "Block-device backend driver"
+       depends on XEN_BACKEND
+       help
+         The block-device backend driver allows the kernel to export its
+         block devices to other guests via a high-performance shared-memory
+         interface.
+
+         The corresponding Linux frontend driver is enabled by the
+         CONFIG_XEN_BLKDEV_FRONTEND configuration option.
+
+         The backend driver attaches itself to a any block device specified
+         in the XenBus configuration. There are no limits to what the block
+         device as long as it has a major and minor.
+
+         If you are compiling a kernel to run in a Xen block backend driver
+         domain (often this is domain 0) you should say Y here. To
+         compile this driver as a module, chose M here: the module
+         will be called xen-blkback.
+
+
 config VIRTIO_BLK
        tristate "Virtio block driver (EXPERIMENTAL)"
        depends on EXPERIMENTAL && VIRTIO