kernel_optimize_test/block/Kconfig
Takashi Sato a0f62ac636 [PATCH] 2TB files: add blkcnt_t
Add blkcnt_t as the type of inode.i_blocks.  This enables you to make the size
of blkcnt_t either 4 bytes or 8 bytes on 32 bits architecture with CONFIG_LSF.

- CONFIG_LSF
  Add new configuration parameter.
- blkcnt_t
  On h8300, i386, mips, powerpc, s390 and sh that define sector_t,
  blkcnt_t is defined as u64 if CONFIG_LSF is enabled; otherwise it is
  defined as unsigned long.
  On other architectures, it is defined as unsigned long.
- inode.i_blocks
  Change the type from sector_t to blkcnt_t.

Signed-off-by: Takashi Sato <sho@tnes.nec.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-26 08:57:00 -08:00

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#
# 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"
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
default n
help
When CONFIG_LBD is disabled, say Y here if you want to
handle large file(bigger than 2TB), otherwise say N.
When CONFIG_LBD is enabled, Y is set automatically.
source block/Kconfig.iosched