## Block layer core configuration##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. source block/Kconfig.iosched