Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik...

[pandora-kernel.git] / block / Kconfig

diff --git a/block/Kconfig b/block/Kconfig
index 2859351..ca2ef4e 100644 (file)
--- a/block/Kconfig
+++ b/block/Kconfig
@@ -51,4 +51,17 @@ config LSF
 
 endif # BLOCK
 
+config BLK_DEV_BSG
+       bool "Block layer SG support v4 (EXPERIMENTAL)"
+       depends on EXPERIMENTAL
+       ---help---
+       Saying Y here will enable generic SG (SCSI generic) v4 support
+       for any block device.
+
+       Unlike SG v3 (aka block/scsi_ioctl.c drivers/scsi/sg.c), SG v4
+       can handle complicated SCSI commands: tagged variable length cdbs
+       with bidirectional data transfers and generic request/response
+       protocols (e.g. Task Management Functions and SMP in Serial
+       Attached SCSI).
+
 source block/Kconfig.iosched