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[PATCH] 2TB files: add blkcnt_t

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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>
This commit is contained in:
Takashi Sato
2006-03-26 01:37:52 -08:00
committed by Linus Torvalds
parent abcb6c9fd1
commit a0f62ac636
9 changed files with 42 additions and 1 deletions
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9
block/Kconfig
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@@ -23,4 +23,13 @@ config BLK_DEV_IO_TRACE
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