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| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2007-07-17 12:22:09 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2007-07-17 12:22:09 +0200 |
| commit | 319a7b7fb98f6927d6eedeb627f72f54c377f9ce (patch) | |
| tree | 75a1ac4fb6ac83678d5744709b5e1fdfc9756824 | |
| parent | 0ed081ce203b0fd9a44763b70f41e36596f9b431 (diff) | |
| download | lwn-319a7b7fb98f6927d6eedeb627f72f54c377f9ce.tar.gz lwn-319a7b7fb98f6927d6eedeb627f72f54c377f9ce.zip | |
bsg: Kconfig updates
- add the detailed explanation.
- remove 'default y'.
- make 'EXPERIMENTAL' keyword visible to the user in menu.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| -rw-r--r-- | block/Kconfig | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/block/Kconfig b/block/Kconfig index 6597b60e8e69..0768741d6813 100644 --- a/block/Kconfig +++ b/block/Kconfig @@ -52,11 +52,16 @@ config LSF endif # BLOCK config BLK_DEV_BSG - bool "Block layer SG support" + bool "Block layer SG support v4 (EXPERIMENTAL)" depends on (SCSI=y) && EXPERIMENTAL - default y ---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). source block/Kconfig.iosched |