[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>
diff --git a/block/Kconfig b/block/Kconfig
index 9678364..43ca070 100644
--- a/block/Kconfig
+++ b/block/Kconfig
@@ -23,4 +23,13 @@
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
diff --git a/include/asm-h8300/types.h b/include/asm-h8300/types.h
index bf91e0d..da2402b 100644
--- a/include/asm-h8300/types.h
+++ b/include/asm-h8300/types.h
@@ -58,6 +58,9 @@
#define HAVE_SECTOR_T
typedef u64 sector_t;
+#define HAVE_BLKCNT_T
+typedef u64 blkcnt_t;
+
#endif /* __KERNEL__ */
#endif /* __ASSEMBLY__ */
diff --git a/include/asm-i386/types.h b/include/asm-i386/types.h
index ced00fe..e50a08b 100644
--- a/include/asm-i386/types.h
+++ b/include/asm-i386/types.h
@@ -63,6 +63,11 @@
#define HAVE_SECTOR_T
#endif
+#ifdef CONFIG_LSF
+typedef u64 blkcnt_t;
+#define HAVE_BLKCNT_T
+#endif
+
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
diff --git a/include/asm-mips/types.h b/include/asm-mips/types.h
index 421b3ae..cd2813d 100644
--- a/include/asm-mips/types.h
+++ b/include/asm-mips/types.h
@@ -99,6 +99,11 @@
#define HAVE_SECTOR_T
#endif
+#ifdef CONFIG_LSF
+typedef u64 blkcnt_t;
+#define HAVE_BLKCNT_T
+#endif
+
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
diff --git a/include/asm-powerpc/types.h b/include/asm-powerpc/types.h
index ec3c2ee..baabba9 100644
--- a/include/asm-powerpc/types.h
+++ b/include/asm-powerpc/types.h
@@ -103,6 +103,11 @@
#define HAVE_SECTOR_T
#endif
+#ifdef CONFIG_LSF
+typedef u64 blkcnt_t;
+#define HAVE_BLKCNT_T
+#endif
+
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
diff --git a/include/asm-s390/types.h b/include/asm-s390/types.h
index d0be3e4..5738ad63 100644
--- a/include/asm-s390/types.h
+++ b/include/asm-s390/types.h
@@ -93,6 +93,11 @@
#define HAVE_SECTOR_T
#endif
+#ifdef CONFIG_LSF
+typedef u64 blkcnt_t;
+#define HAVE_BLKCNT_T
+#endif
+
#endif /* ! __s390x__ */
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
diff --git a/include/asm-sh/types.h b/include/asm-sh/types.h
index cb7e183..488552f 100644
--- a/include/asm-sh/types.h
+++ b/include/asm-sh/types.h
@@ -58,6 +58,11 @@
#define HAVE_SECTOR_T
#endif
+#ifdef CONFIG_LSF
+typedef u64 blkcnt_t;
+#define HAVE_BLKCNT_T
+#endif
+
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 64b0ca4..155d29d 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -490,7 +490,7 @@
unsigned int i_blkbits;
unsigned long i_blksize;
unsigned long i_version;
- sector_t i_blocks;
+ blkcnt_t i_blocks;
unsigned short i_bytes;
spinlock_t i_lock; /* i_blocks, i_bytes, maybe i_size */
struct mutex i_mutex;
diff --git a/include/linux/types.h b/include/linux/types.h
index 54ae2d5..1046c7a 100644
--- a/include/linux/types.h
+++ b/include/linux/types.h
@@ -137,6 +137,10 @@
typedef unsigned long sector_t;
#endif
+#ifndef HAVE_BLKCNT_T
+typedef unsigned long blkcnt_t;
+#endif
+
/*
* The type of an index into the pagecache. Use a #define so asm/types.h
* can override it.