[ARM] 4550/1: sched_clock on PXA should cope with run time clock rate selection

[linux-2.6-omap-h63xx.git] / block / Kconfig

diff --git a/block/Kconfig b/block/Kconfig
index 1d16b08e15063e97d17d3c519deecc3395e2ff3c..2484e0e9d89c9127c0678052b18bfa879b8a827d 100644 (file)
--- a/block/Kconfig
+++ b/block/Kconfig
@@ -49,14 +49,19 @@ config LSF
 
          If unsure, say Y.
 
-endif # BLOCK
-
 config BLK_DEV_BSG
-       bool "Block layer SG support"
-       depends on SCSI && EXPERIMENTAL
-       default y
+       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.
+       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