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- #
- # Block layer core configuration
- #
- config 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
- #XXX - it makes sense to enable this only for 32-bit subarch's, not for x86_64
- #for instance.
- config LBD
- bool "Support for Large Block Devices"
- depends on X86 || (MIPS && 32BIT) || PPC32 || (S390 && !64BIT) || SUPERH || UML
- 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 X86 || (MIPS && 32BIT) || PPC32 || ARCH_S390_31 || SUPERH || UML
- 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.
- endif
- source block/Kconfig.iosched
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