| # | |
| # Block layer core configuration | |
| # | |
| menuconfig BLOCK | |
| bool "Enable the block layer" if EMBEDDED | |
| default y | |
| help | |
| This permits the block layer to be removed from the kernel if it's not | |
| needed (on some embedded devices for example). If this option is | |
| disabled, then blockdev files will become unusable and some | |
| filesystems (such as ext3) will become unavailable. | |
| This option will also disable SCSI character devices and USB storage | |
| since they make use of various block layer definitions and | |
| facilities. | |
| Say Y here unless you know you really don't want to mount disks and | |
| suchlike. | |
| if BLOCK | |
| config LBD | |
| bool "Support for Large Block Devices" | |
| depends on !64BIT | |
| help | |
| Say Y here if you want to attach large (bigger than 2TB) discs to | |
| your machine, or if you want to have a raid or loopback device | |
| bigger than 2TB. Otherwise say N. | |
| config BLK_DEV_IO_TRACE | |
| bool "Support for tracing block io actions" | |
| depends on SYSFS | |
| select RELAY | |
| select DEBUG_FS | |
| help | |
| Say Y here, if you want to be able to trace the block layer actions | |
| on a given queue. Tracing allows you to see any traffic happening | |
| on a block device queue. For more information (and the user space | |
| support tools needed), fetch the blktrace app from: | |
| git://brick.kernel.dk/data/git/blktrace.git | |
| config LSF | |
| bool "Support for Large Single Files" | |
| depends on !64BIT | |
| help | |
| Say Y here if you want to be able to handle very large files (bigger | |
| than 2TB), otherwise say N. | |
| 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 | |
| config BLOCK_COMPAT | |
| bool | |
| depends on BLOCK && COMPAT | |
| default y | |
| source block/Kconfig.iosched |