git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| 3a65dfe8 JA |
1 | # |
| 2 | # Block layer core configuration | |
| 3 | # | |
| 16ed002f | 4 | menuconfig BLOCK |
| 51d7513a | 5 | bool "Enable the block layer" if EMBEDDED |
| 9361401e DH |
6 | default y |
| 7 | help | |
| 8 | This permits the block layer to be removed from the kernel if it's not | |
| 9 | needed (on some embedded devices for example). If this option is | |
| 10 | disabled, then blockdev files will become unusable and some | |
| 11 | filesystems (such as ext3) will become unavailable. | |
| 12 | ||
| 13 | This option will also disable SCSI character devices and USB storage | |
| 14 | since they make use of various block layer definitions and | |
| 15 | facilities. | |
| 16 | ||
| 17 | Say Y here unless you know you really don't want to mount disks and | |
| 18 | suchlike. | |
| 19 | ||
| 20 | if BLOCK | |
| 21 | ||
| 3a65dfe8 JA |
22 | config LBD |
| 23 | bool "Support for Large Block Devices" | |
| e6243863 | 24 | depends on !64BIT |
| 3a65dfe8 JA |
25 | help |
| 26 | Say Y here if you want to attach large (bigger than 2TB) discs to | |
| 27 | your machine, or if you want to have a raid or loopback device | |
| 28 | bigger than 2TB. Otherwise say N. | |
| 29 | ||
| 2056a782 JA |
30 | config BLK_DEV_IO_TRACE |
| 31 | bool "Support for tracing block io actions" | |
| 09540e69 | 32 | depends on SYSFS |
| 2056a782 JA |
33 | select RELAY |
| 34 | select DEBUG_FS | |
| 35 | help | |
| 36 | Say Y here, if you want to be able to trace the block layer actions | |
| 37 | on a given queue. Tracing allows you to see any traffic happening | |
| 38 | on a block device queue. For more information (and the user space | |
| 39 | support tools needed), fetch the blktrace app from: | |
| 40 | ||
| 41 | git://brick.kernel.dk/data/git/blktrace.git | |
| 42 | ||
| a0f62ac6 TS |
43 | config LSF |
| 44 | bool "Support for Large Single Files" | |
| e6243863 | 45 | depends on !64BIT |
| a0f62ac6 | 46 | help |
| 88b9adb0 TM |
47 | Say Y here if you want to be able to handle very large files (bigger |
| 48 | than 2TB), otherwise say N. | |
| 49 | ||
| 50 | If unsure, say Y. | |
| a0f62ac6 | 51 | |
| 3d6392cf | 52 | config BLK_DEV_BSG |
| 319a7b7f | 53 | bool "Block layer SG support v4 (EXPERIMENTAL)" |
| 80ed71ce | 54 | depends on EXPERIMENTAL |
| 3d6392cf | 55 | ---help--- |
| 319a7b7f FT |
56 | Saying Y here will enable generic SG (SCSI generic) v4 support |
| 57 | for any block device. | |
| 58 | ||
| 59 | Unlike SG v3 (aka block/scsi_ioctl.c drivers/scsi/sg.c), SG v4 | |
| 60 | can handle complicated SCSI commands: tagged variable length cdbs | |
| 61 | with bidirectional data transfers and generic request/response | |
| 62 | protocols (e.g. Task Management Functions and SMP in Serial | |
| 63 | Attached SCSI). | |
| 3d6392cf | 64 | |
| 4d5d8e9d PM |
65 | endif # BLOCK |
| 66 | ||
| 3a65dfe8 | 67 | source block/Kconfig.iosched |