bitops: remove minix bitops from asm/bitops.h

minix bit operations are only used by minix filesystem and useless by
other modules.  Because byte order of inode and block bitmaps is different
on each architecture like below:

m68k:
	big-endian 16bit indexed bitmaps

h8300, microblaze, s390, sparc, m68knommu:
	big-endian 32 or 64bit indexed bitmaps

m32r, mips, sh, xtensa:
	big-endian 32 or 64bit indexed bitmaps for big-endian mode
	little-endian bitmaps for little-endian mode

Others:
	little-endian bitmaps

In order to move minix bit operations from asm/bitops.h to architecture
independent code in minix filesystem, this provides two config options.

CONFIG_MINIX_FS_BIG_ENDIAN_16BIT_INDEXED is only selected by m68k.
CONFIG_MINIX_FS_NATIVE_ENDIAN is selected by the architectures which use
native byte order bitmaps (h8300, microblaze, s390, sparc, m68knommu,
m32r, mips, sh, xtensa).  The architectures which always use little-endian
bitmaps do not select these options.

Finally, we can remove minix bit operations from asm/bitops.h for all
architectures.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Andreas Schwab <schwab@linux-m68k.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Michal Simek <monstr@monstr.eu>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Cc: Chris Zankel <chris@zankel.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

22 files changed, 0 insertions, 79 deletions

diff --git a/arch/alpha/include/asm/bitops.h b/arch/alpha/include/asm/bitops.h
index 822433a00c6..85b81521577 100644
--- a/arch/alpha/include/asm/bitops.h
+++ b/arch/alpha/include/asm/bitops.h
@@ -459,8 +459,6 @@ sched_find_first_bit(const unsigned long b[2])
 #define ext2_set_bit_atomic(l,n,a)   test_and_set_bit(n,a)
 #define ext2_clear_bit_atomic(l,n,a) test_and_clear_bit(n,a)
 
-#include <asm-generic/bitops/minix.h>
-
 #endif /* __KERNEL__ */
 
 #endif /* _ALPHA_BITOPS_H */
diff --git a/arch/arm/include/asm/bitops.h b/arch/arm/include/asm/bitops.h
index f68f1fb6b38..6b7403fd8f5 100644
--- a/arch/arm/include/asm/bitops.h
+++ b/arch/arm/include/asm/bitops.h
@@ -345,16 +345,6 @@ static inline int find_next_bit_le(const void *p, int size, int offset)
 #define ext2_clear_bit_atomic(lock, nr, p)      \
                 test_and_clear_bit_le(nr, p)
 
-/*
- * Minix is defined to use little-endian byte ordering.
- * These do not need to be atomic.
- */
-#define minix_set_bit __set_bit_le
-#define minix_test_bit test_bit_le
-#define minix_test_and_set_bit __test_and_set_bit_le
-#define minix_test_and_clear_bit __test_and_clear_bit_le
-#define minix_find_first_zero_bit find_first_zero_bit_le
-
 #endif /* __KERNEL__ */
 
 #endif /* _ARM_BITOPS_H */
diff --git a/arch/avr32/include/asm/bitops.h b/arch/avr32/include/asm/bitops.h
index 73a163a71f1..72444d97f80 100644
--- a/arch/avr32/include/asm/bitops.h
+++ b/arch/avr32/include/asm/bitops.h
@@ -301,6 +301,5 @@ static inline int ffs(unsigned long word)
 
 #include <asm-generic/bitops/le.h>
 #include <asm-generic/bitops/ext2-atomic.h>
-#include <asm-generic/bitops/minix-le.h>
 
 #endif /* __ASM_AVR32_BITOPS_H */
diff --git a/arch/blackfin/include/asm/bitops.h b/arch/blackfin/include/asm/bitops.h
index 6a69690bd46..49762c6bb0d 100644
--- a/arch/blackfin/include/asm/bitops.h
+++ b/arch/blackfin/include/asm/bitops.h
@@ -27,7 +27,6 @@
 
 #include <asm-generic/bitops/le.h>
 #include <asm-generic/bitops/ext2-atomic.h>
-#include <asm-generic/bitops/minix.h>
 
 #ifndef CONFIG_SMP
 #include <linux/irqflags.h>
diff --git a/arch/cris/include/asm/bitops.h b/arch/cris/include/asm/bitops.h
index 71bea4032eb..310e0de67aa 100644
--- a/arch/cris/include/asm/bitops.h
+++ b/arch/cris/include/asm/bitops.h
@@ -159,7 +159,6 @@ static inline int test_and_change_bit(int nr, volatile unsigned long *addr)
 #define ext2_set_bit_atomic(l,n,a)   test_and_set_bit(n,a)
 #define ext2_clear_bit_atomic(l,n,a) test_and_clear_bit(n,a)
 
-#include <asm-generic/bitops/minix.h>
 #include <asm-generic/bitops/sched.h>
 
 #endif /* __KERNEL__ */
diff --git a/arch/frv/include/asm/bitops.h b/arch/frv/include/asm/bitops.h
index e3ea644108c..a1d00b0c6ed 100644
--- a/arch/frv/include/asm/bitops.h
+++ b/arch/frv/include/asm/bitops.h
@@ -406,8 +406,6 @@ int __ilog2_u64(u64 n)
 #define ext2_set_bit_atomic(lock,nr,addr)       test_and_set_bit  ((nr) ^ 0x18, (addr))
 #define ext2_clear_bit_atomic(lock,nr,addr)     test_and_clear_bit((nr) ^ 0x18, (addr))
 
-#include <asm-generic/bitops/minix-le.h>
-
 #endif /* __KERNEL__ */
 
 #endif /* _ASM_BITOPS_H */
diff --git a/arch/h8300/include/asm/bitops.h b/arch/h8300/include/asm/bitops.h
index 23cea666898..e856c1bb341 100644
--- a/arch/h8300/include/asm/bitops.h
+++ b/arch/h8300/include/asm/bitops.h
@@ -202,7 +202,6 @@ static __inline__ unsigned long __ffs(unsigned long word)
 #include <asm-generic/bitops/lock.h>
 #include <asm-generic/bitops/le.h>
 #include <asm-generic/bitops/ext2-atomic.h>
-#include <asm-generic/bitops/minix.h>
 
 #endif /* __KERNEL__ */
 
diff --git a/arch/ia64/include/asm/bitops.h b/arch/ia64/include/asm/bitops.h
index 336984acc8c..b76f7e00921 100644
--- a/arch/ia64/include/asm/bitops.h
+++ b/arch/ia64/include/asm/bitops.h
@@ -461,7 +461,6 @@ static __inline__ unsigned long __arch_hweight64(unsigned long x)
 #define ext2_set_bit_atomic(l,n,a)      test_and_set_bit(n,a)
 #define ext2_clear_bit_atomic(l,n,a)    test_and_clear_bit(n,a)
 
-#include <asm-generic/bitops/minix.h>
 #include <asm-generic/bitops/sched.h>
 
 #endif /* __KERNEL__ */
diff --git a/arch/m32r/include/asm/bitops.h b/arch/m32r/include/asm/bitops.h
index cdfb4c82fb8..6300f22cdbd 100644
--- a/arch/m32r/include/asm/bitops.h
+++ b/arch/m32r/include/asm/bitops.h
@@ -268,7 +268,6 @@ static __inline__ int test_and_change_bit(int nr, volatile void * addr)
 
 #include <asm-generic/bitops/le.h>
 #include <asm-generic/bitops/ext2-atomic.h>
-#include <asm-generic/bitops/minix.h>
 
 #endif /* __KERNEL__ */
 
diff --git a/arch/m68k/include/asm/bitops_mm.h b/arch/m68k/include/asm/bitops_mm.h
index a403b5e69aa..9d69f6e6236 100644
--- a/arch/m68k/include/asm/bitops_mm.h
+++ b/arch/m68k/include/asm/bitops_mm.h
@@ -325,36 +325,6 @@ static inline int __fls(int x)
 #include <asm-generic/bitops/hweight.h>
 #include <asm-generic/bitops/lock.h>
 
-/* Bitmap functions for the minix filesystem */
-
-static inline int minix_find_first_zero_bit(const void *vaddr, unsigned size)
-{
-        const unsigned short *p = vaddr, *addr = vaddr;
-        unsigned short num;
-
-        if (!size)
-                return 0;
-
-        size = (size >> 4) + ((size & 15) > 0);
-        while (*p++ == 0xffff) {
-                if (--size == 0)
-                        return (p - addr) << 4;
-        }
-
-        num = *--p;
-        return ((p - addr) << 4) + ffz(num);
-}
-
-#define minix_test_and_set_bit(nr, addr)        __test_and_set_bit((nr) ^ 16, (unsigned long *)(addr))
-#define minix_set_bit(nr,addr)                  __set_bit((nr) ^ 16, (unsigned long *)(addr))
-#define minix_test_and_clear_bit(nr, addr)      __test_and_clear_bit((nr) ^ 16, (unsigned long *)(addr))
-
-static inline int minix_test_bit(int nr, const void *vaddr)
-{
-        const unsigned short *p = vaddr;
-        return (p[nr >> 4] & (1U << (nr & 15))) != 0;
-}
-
 /* Bitmap functions for the little endian bitmap. */
 
 static inline void __set_bit_le(int nr, void *addr)
diff --git a/arch/m68k/include/asm/bitops_no.h b/arch/m68k/include/asm/bitops_no.h
index 8db5fef8631..7d3779fdc5b 100644
--- a/arch/m68k/include/asm/bitops_no.h
+++ b/arch/m68k/include/asm/bitops_no.h
@@ -336,8 +336,6 @@ found_middle:
         return result + ffz(__swab32(tmp));
 }
 
-#include <asm-generic/bitops/minix.h>
-
 #endif /* __KERNEL__ */
 
 #include <asm-generic/bitops/fls.h>
diff --git a/arch/mips/include/asm/bitops.h b/arch/mips/include/asm/bitops.h
index e062718a3fe..2e1ad4c652b 100644
--- a/arch/mips/include/asm/bitops.h
+++ b/arch/mips/include/asm/bitops.h
@@ -678,7 +678,6 @@ static inline int ffs(int word)
 
 #include <asm-generic/bitops/le.h>
 #include <asm-generic/bitops/ext2-atomic.h>
-#include <asm-generic/bitops/minix.h>
 
 #endif /* __KERNEL__ */
 
diff --git a/arch/mn10300/include/asm/bitops.h b/arch/mn10300/include/asm/bitops.h
index a5f460cb834..0939462967e 100644
--- a/arch/mn10300/include/asm/bitops.h
+++ b/arch/mn10300/include/asm/bitops.h
@@ -234,7 +234,6 @@ int ffs(int x)
         test_and_clear_bit((nr), (addr))
 
 #include <asm-generic/bitops/le.h>
-#include <asm-generic/bitops/minix-le.h>
 
 #endif /* __KERNEL__ */
 #endif /* __ASM_BITOPS_H */
diff --git a/arch/parisc/include/asm/bitops.h b/arch/parisc/include/asm/bitops.h
index 919d7ed155e..43c516fa17f 100644
--- a/arch/parisc/include/asm/bitops.h
+++ b/arch/parisc/include/asm/bitops.h
@@ -234,6 +234,4 @@ static __inline__ int fls(int x)
 
 #endif  /* __KERNEL__ */
 
-#include <asm-generic/bitops/minix-le.h>
-
 #endif /* _PARISC_BITOPS_H */
diff --git a/arch/powerpc/include/asm/bitops.h b/arch/powerpc/include/asm/bitops.h
index e3bd9a3bcb4..2e561876fc8 100644
--- a/arch/powerpc/include/asm/bitops.h
+++ b/arch/powerpc/include/asm/bitops.h
@@ -332,20 +332,6 @@ unsigned long find_next_bit_le(const void *addr,
 #define ext2_clear_bit_atomic(lock, nr, addr) \
         test_and_clear_bit_le((nr), (unsigned long*)addr)
 
-/* Bitmap functions for the minix filesystem.  */
-
-#define minix_test_and_set_bit(nr,addr) \
-        __test_and_set_bit_le(nr, (unsigned long *)addr)
-#define minix_set_bit(nr,addr) \
-        __set_bit_le(nr, (unsigned long *)addr)
-#define minix_test_and_clear_bit(nr,addr) \
-        __test_and_clear_bit_le(nr, (unsigned long *)addr)
-#define minix_test_bit(nr,addr) \
-        test_bit_le(nr, (unsigned long *)addr)
-
-#define minix_find_first_zero_bit(addr,size) \
-        find_first_zero_bit_le((unsigned long *)addr, size)
-
 #include <asm-generic/bitops/sched.h>
 
 #endif /* __KERNEL__ */
diff --git a/arch/s390/include/asm/bitops.h b/arch/s390/include/asm/bitops.h
index 2dd32bba47e..e1c8f3a4988 100644
--- a/arch/s390/include/asm/bitops.h
+++ b/arch/s390/include/asm/bitops.h
@@ -862,7 +862,6 @@ static inline int find_next_bit_le(void *vaddr, unsigned long size,
 #define ext2_clear_bit_atomic(lock, nr, addr)   \
         test_and_clear_bit_le(nr, addr)
 
-#include <asm-generic/bitops/minix.h>
 
 #endif /* __KERNEL__ */
 
diff --git a/arch/sh/include/asm/bitops.h b/arch/sh/include/asm/bitops.h
index fc5cd5b9b44..90fa3e48b4d 100644
--- a/arch/sh/include/asm/bitops.h
+++ b/arch/sh/include/asm/bitops.h
@@ -96,7 +96,6 @@ static inline unsigned long ffz(unsigned long word)
 #include <asm-generic/bitops/sched.h>
 #include <asm-generic/bitops/le.h>
 #include <asm-generic/bitops/ext2-atomic.h>
-#include <asm-generic/bitops/minix.h>
 #include <asm-generic/bitops/fls.h>
 #include <asm-generic/bitops/__fls.h>
 #include <asm-generic/bitops/fls64.h>
diff --git a/arch/sparc/include/asm/bitops_32.h b/arch/sparc/include/asm/bitops_32.h
index 75da6f82a12..25a676653d4 100644
--- a/arch/sparc/include/asm/bitops_32.h
+++ b/arch/sparc/include/asm/bitops_32.h
@@ -105,7 +105,6 @@ static inline void change_bit(unsigned long nr, volatile unsigned long *addr)
 #include <asm-generic/bitops/find.h>
 #include <asm-generic/bitops/le.h>
 #include <asm-generic/bitops/ext2-atomic.h>
-#include <asm-generic/bitops/minix.h>
 
 #endif /* __KERNEL__ */
 
diff --git a/arch/sparc/include/asm/bitops_64.h b/arch/sparc/include/asm/bitops_64.h
index 66db28e6bbf..38e9aa1b2ce 100644
--- a/arch/sparc/include/asm/bitops_64.h
+++ b/arch/sparc/include/asm/bitops_64.h
@@ -96,8 +96,6 @@ static inline unsigned int __arch_hweight8(unsigned int w)
 #define ext2_clear_bit_atomic(lock,nr,addr) \
         test_and_clear_bit((nr) ^ 0x38,(unsigned long *)(addr))
 
-#include <asm-generic/bitops/minix.h>
-
 #endif /* __KERNEL__ */
 
 #endif /* defined(_SPARC64_BITOPS_H) */
diff --git a/arch/tile/include/asm/bitops.h b/arch/tile/include/asm/bitops.h
index 5447addafca..132e6bbd07e 100644
--- a/arch/tile/include/asm/bitops.h
+++ b/arch/tile/include/asm/bitops.h
@@ -123,6 +123,5 @@ static inline unsigned long __arch_hweight64(__u64 w)
 #include <asm-generic/bitops/find.h>
 #include <asm-generic/bitops/sched.h>
 #include <asm-generic/bitops/le.h>
-#include <asm-generic/bitops/minix.h>
 
 #endif /* _ASM_TILE_BITOPS_H */
diff --git a/arch/x86/include/asm/bitops.h b/arch/x86/include/asm/bitops.h
index 3c95e072c17..69d58131bc8 100644
--- a/arch/x86/include/asm/bitops.h
+++ b/arch/x86/include/asm/bitops.h
@@ -463,7 +463,5 @@ static inline int fls(int x)
 #define ext2_clear_bit_atomic(lock, nr, addr)                   \
         test_and_clear_bit((nr), (unsigned long *)(addr))
 
-#include <asm-generic/bitops/minix.h>
-
 #endif /* __KERNEL__ */
 #endif /* _ASM_X86_BITOPS_H */
diff --git a/arch/xtensa/include/asm/bitops.h b/arch/xtensa/include/asm/bitops.h
index a56b7b577f0..c8fac8d8190 100644
--- a/arch/xtensa/include/asm/bitops.h
+++ b/arch/xtensa/include/asm/bitops.h
@@ -125,7 +125,6 @@ static inline unsigned long __fls(unsigned long word)
 #include <asm-generic/bitops/hweight.h>
 #include <asm-generic/bitops/lock.h>
 #include <asm-generic/bitops/sched.h>
-#include <asm-generic/bitops/minix.h>
 
 #endif  /* __KERNEL__ */