X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=block%2FKconfig;h=2484e0e9d89c9127c0678052b18bfa879b8a827d;hb=bda0233b89c10ae46ccecb78bffdaf0fd7833d17;hp=285935134bcd02cedf51cd1330ea1460aca4ca14;hpb=64b853aa328f34dd58e4e617cded91e2ddbcac13;p=linux-2.6

diff --git a/block/Kconfig b/block/Kconfig
index 285935134b..2484e0e9d8 100644
--- a/block/Kconfig
+++ b/block/Kconfig
@@ -49,6 +49,19 @@ config LSF
 
 	  If unsure, say Y.
 
+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).
+
 endif # BLOCK
 
 source block/Kconfig.iosched