Patchwork [v3,22/22] bitops: remove minix bitops from asm/bitops.h

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Submitter Akinobu Mita
Date Nov. 23, 2010, 1:38 p.m.
Message ID <1290519504-3958-23-git-send-email-akinobu.mita@gmail.com>
Download mbox | patch
Permalink /patch/72664/
State Not Applicable
Delegated to: David Miller
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Comments

Akinobu Mita - Nov. 23, 2010, 1:38 p.m.
minix bit operations are only used by minix filesystem and useless
by other modules. Because byte order of inode and block bitmaps is
defferent 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 file system, 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: linux-m68k@lists.linux-m68k.org
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: linux390@de.ibm.com
Cc: linux-s390@vger.kernel.org
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Michal Simek <monstr@monstr.eu>
Cc: microblaze-uclinux@itee.uq.edu.au
Cc: "David S. Miller" <davem@davemloft.net>
Cc: sparclinux@vger.kernel.org
Cc: Hirokazu Takata <takata@linux-m32r.org>
Cc: linux-m32r@ml.linux-m32r.org
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: linux-sh@vger.kernel.org
Cc: Chris Zankel <chris@zankel.net>
---
No change from previous submission
 arch/alpha/include/asm/bitops.h       |    2 -
 arch/arm/include/asm/bitops.h         |   14 ------
 arch/avr32/include/asm/bitops.h       |    1 -
 arch/blackfin/include/asm/bitops.h    |    1 -
 arch/cris/include/asm/bitops.h        |    1 -
 arch/frv/include/asm/bitops.h         |    2 -
 arch/h8300/include/asm/bitops.h       |    1 -
 arch/ia64/include/asm/bitops.h        |    1 -
 arch/m32r/include/asm/bitops.h        |    1 -
 arch/m68k/include/asm/bitops_mm.h     |   30 ------------
 arch/mips/include/asm/bitops.h        |    1 -
 arch/mn10300/include/asm/bitops.h     |    1 -
 arch/parisc/include/asm/bitops.h      |    2 -
 arch/powerpc/include/asm/bitops.h     |   14 ------
 arch/s390/include/asm/bitops.h        |    1 -
 arch/sh/include/asm/bitops.h          |    1 -
 arch/sparc/include/asm/bitops_32.h    |    1 -
 arch/sparc/include/asm/bitops_64.h    |    2 -
 arch/tile/include/asm/bitops.h        |    1 -
 arch/x86/include/asm/bitops.h         |    2 -
 arch/xtensa/include/asm/bitops.h      |    1 -
 fs/minix/Kconfig                      |    8 +++
 fs/minix/minix.h                      |   79 +++++++++++++++++++++++++++++++++
 include/asm-generic/bitops.h          |    1 -
 include/asm-generic/bitops/minix-le.h |   15 ------
 include/asm-generic/bitops/minix.h    |   15 ------
 26 files changed, 87 insertions(+), 112 deletions(-)
 delete mode 100644 include/asm-generic/bitops/minix-le.h
 delete mode 100644 include/asm-generic/bitops/minix.h
Paul Mundt - Nov. 24, 2010, 5:55 a.m.
On Tue, Nov 23, 2010 at 10:38:24PM +0900, Akinobu Mita wrote:
> minix bit operations are only used by minix filesystem and useless
> by other modules. Because byte order of inode and block bitmaps is
> defferent 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 file system, 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: linux-m68k@lists.linux-m68k.org
> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
> Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
> Cc: linux390@de.ibm.com
> Cc: linux-s390@vger.kernel.org
> Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
> Cc: Michal Simek <monstr@monstr.eu>
> Cc: microblaze-uclinux@itee.uq.edu.au
> Cc: "David S. Miller" <davem@davemloft.net>
> Cc: sparclinux@vger.kernel.org
> Cc: Hirokazu Takata <takata@linux-m32r.org>
> Cc: linux-m32r@ml.linux-m32r.org
> Cc: Ralf Baechle <ralf@linux-mips.org>
> Cc: linux-mips@linux-mips.org
> Cc: Paul Mundt <lethal@linux-sh.org>
> Cc: linux-sh@vger.kernel.org
> Cc: Chris Zankel <chris@zankel.net>

Acked-by: Paul Mundt <lethal@linux-sh.org>
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Ralf Baechle - Nov. 24, 2010, 12:54 p.m.
On Tue, Nov 23, 2010 at 10:38:24PM +0900, Akinobu Mita wrote:

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

Acked-by: Ralf Baechle <ralf@linux-mips.org>

  Ralf
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Patch

diff --git a/arch/alpha/include/asm/bitops.h b/arch/alpha/include/asm/bitops.h
index 822433a..85b8152 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 ac2edb4..59a2a2b 100644
--- a/arch/arm/include/asm/bitops.h
+++ b/arch/arm/include/asm/bitops.h
@@ -332,20 +332,6 @@  static inline int fls(int x)
 #define ext2_clear_bit_atomic(lock,nr,p)        \
 		test_and_clear_le_bit(nr, (unsigned long *)(p))
 
-/*
- * Minix is defined to use little-endian byte ordering.
- * These do not need to be atomic.
- */
-#define minix_set_bit(nr,p)			\
-		__set_le_bit(nr, (unsigned long *)(p))
-#define minix_test_bit(nr,p)			\
-		test_le_bit(nr, (unsigned long *)(p))
-#define minix_test_and_set_bit(nr,p)		\
-		__test_and_set_le_bit(nr, (unsigned long *)(p))
-#define minix_test_and_clear_bit(nr,p)		\
-		__test_and_clear_le_bit(nr, (unsigned long *)(p))
-#define minix_find_first_zero_bit(p,sz)		\
-		find_first_zero_le_bit((unsigned long *)(p), sz)
 
 #endif /* __KERNEL__ */
 
diff --git a/arch/avr32/include/asm/bitops.h b/arch/avr32/include/asm/bitops.h
index 73a163a..72444d9 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 2c549f7..68843fa 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 71bea40..310e0de 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 e3ea644..a1d00b0 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 23cea66..e856c1b 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 336984a..b76f7e0 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 cdfb4c8..6300f22 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 f31ed5a..5f06275 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 little endian. */
 
 #define __set_le_bit(nr, addr)	\
diff --git a/arch/mips/include/asm/bitops.h b/arch/mips/include/asm/bitops.h
index e062718..2e1ad4c 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 a5f460c..0939462 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 919d7ed..43c516f 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 eb9ce7f..bf5ccfc 100644
--- a/arch/powerpc/include/asm/bitops.h
+++ b/arch/powerpc/include/asm/bitops.h
@@ -308,20 +308,6 @@  unsigned long find_next_le_bit(const unsigned long *addr,
 #define ext2_clear_bit_atomic(lock, nr, addr) \
 	test_and_clear_le_bit((nr), (unsigned long*)addr)
 
-/* Bitmap functions for the minix filesystem.  */
-
-#define minix_test_and_set_bit(nr,addr) \
-	__test_and_set_le_bit(nr, (unsigned long *)addr)
-#define minix_set_bit(nr,addr) \
-	__set_le_bit(nr, (unsigned long *)addr)
-#define minix_test_and_clear_bit(nr,addr) \
-	__test_and_clear_le_bit(nr, (unsigned long *)addr)
-#define minix_test_bit(nr,addr) \
-	test_le_bit(nr, (unsigned long *)addr)
-
-#define minix_find_first_zero_bit(addr,size) \
-	find_first_zero_le_bit((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 1bd1e11..e537613 100644
--- a/arch/s390/include/asm/bitops.h
+++ b/arch/s390/include/asm/bitops.h
@@ -842,7 +842,6 @@  static inline int find_next_le_bit(void *vaddr, unsigned long size,
 #define ext2_clear_bit_atomic(lock, nr, addr)     \
 	test_and_clear_le_bit((nr), (unsigned long *)(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 fc5cd5b..90fa3e4 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 75da6f8..25a6766 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 66db28e..38e9aa1 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 5447add..132e6bb 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 3c95e07..69d5813 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 a56b7b5..c8fac8d 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__ */
 
diff --git a/fs/minix/Kconfig b/fs/minix/Kconfig
index 0fd7ca9..6624684 100644
--- a/fs/minix/Kconfig
+++ b/fs/minix/Kconfig
@@ -15,3 +15,11 @@  config MINIX_FS
 	  module will be called minix.  Note that the file system of your root
 	  partition (the one containing the directory /) cannot be compiled as
 	  a module.
+
+config MINIX_FS_NATIVE_ENDIAN
+	def_bool MINIX_FS
+	depends on H8300 || M32R || MICROBLAZE || MIPS || S390 || SUPERH || SPARC || XTENSA || (M68K && !MMU)
+
+config MINIX_FS_BIG_ENDIAN_16BIT_INDEXED
+	def_bool MINIX_FS
+	depends on M68K && MMU
diff --git a/fs/minix/minix.h b/fs/minix/minix.h
index 407b1c8..9dfd62c 100644
--- a/fs/minix/minix.h
+++ b/fs/minix/minix.h
@@ -88,4 +88,83 @@  static inline struct minix_inode_info *minix_i(struct inode *inode)
 	return list_entry(inode, struct minix_inode_info, vfs_inode);
 }
 
+#if defined(CONFIG_MINIX_FS_NATIVE_ENDIAN) && \
+	defined(CONFIG_MINIX_FS_BIG_ENDIAN_16BIT_INDEXED)
+
+#error Minix file system byte order broken
+
+#elif defined(CONFIG_MINIX_FS_NATIVE_ENDIAN)
+
+/*
+ * big-endian 32 or 64 bit indexed bitmaps on big-endian system or
+ * little-endian bitmaps on little-endian system
+ */
+
+#define minix_test_and_set_bit(nr, addr)	\
+	__test_and_set_bit((nr), (unsigned long *)(addr))
+#define minix_set_bit(nr, addr)		\
+	__set_bit((nr), (unsigned long *)(addr))
+#define minix_test_and_clear_bit(nr, addr) \
+	__test_and_clear_bit((nr), (unsigned long *)(addr))
+#define minix_test_bit(nr, addr)		\
+	test_bit((nr), (unsigned long *)(addr))
+#define minix_find_first_zero_bit(addr, size) \
+	find_first_zero_bit((unsigned long *)(addr), (size))
+
+#elif defined(CONFIG_MINIX_FS_BIG_ENDIAN_16BIT_INDEXED)
+
+/*
+ * big-endian 16bit indexed bitmaps
+ */
+
+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;
+}
+
+#else
+
+/*
+ * little-endian bitmaps
+ */
+
+#define minix_test_and_set_bit(nr, addr)	\
+	__test_and_set_le_bit((nr), (unsigned long *)(addr))
+#define minix_set_bit(nr, addr)		\
+	__set_le_bit((nr), (unsigned long *)(addr))
+#define minix_test_and_clear_bit(nr, addr) \
+	__test_and_clear_le_bit((nr), (unsigned long *)(addr))
+#define minix_test_bit(nr, addr)		\
+	test_le_bit((nr), (unsigned long *)(addr))
+#define minix_find_first_zero_bit(addr, size) \
+	find_first_zero_le_bit((unsigned long *)(addr), (size))
+
+#endif
+
 #endif /* FS_MINIX_H */
diff --git a/include/asm-generic/bitops.h b/include/asm-generic/bitops.h
index dd7c014..280ca7a 100644
--- a/include/asm-generic/bitops.h
+++ b/include/asm-generic/bitops.h
@@ -40,6 +40,5 @@ 
 #include <asm-generic/bitops/non-atomic.h>
 #include <asm-generic/bitops/le.h>
 #include <asm-generic/bitops/ext2-atomic.h>
-#include <asm-generic/bitops/minix.h>
 
 #endif /* __ASM_GENERIC_BITOPS_H */
diff --git a/include/asm-generic/bitops/minix-le.h b/include/asm-generic/bitops/minix-le.h
deleted file mode 100644
index f366cfa..0000000
--- a/include/asm-generic/bitops/minix-le.h
+++ /dev/null
@@ -1,15 +0,0 @@ 
-#ifndef _ASM_GENERIC_BITOPS_MINIX_LE_H_
-#define _ASM_GENERIC_BITOPS_MINIX_LE_H_
-
-#define minix_test_and_set_bit(nr,addr)	\
-	__test_and_set_le_bit((nr), (unsigned long *)(addr))
-#define minix_set_bit(nr,addr)		\
-	__set_le_bit((nr), (unsigned long *)(addr))
-#define minix_test_and_clear_bit(nr,addr) \
-	__test_and_clear_le_bit((nr), (unsigned long *)(addr))
-#define minix_test_bit(nr,addr)		\
-	test_le_bit((nr), (unsigned long *)(addr))
-#define minix_find_first_zero_bit(addr,size) \
-	find_first_zero_le_bit((unsigned long *)(addr), (size))
-
-#endif /* _ASM_GENERIC_BITOPS_MINIX_LE_H_ */
diff --git a/include/asm-generic/bitops/minix.h b/include/asm-generic/bitops/minix.h
deleted file mode 100644
index 91f42e8..0000000
--- a/include/asm-generic/bitops/minix.h
+++ /dev/null
@@ -1,15 +0,0 @@ 
-#ifndef _ASM_GENERIC_BITOPS_MINIX_H_
-#define _ASM_GENERIC_BITOPS_MINIX_H_
-
-#define minix_test_and_set_bit(nr,addr)	\
-	__test_and_set_bit((nr),(unsigned long *)(addr))
-#define minix_set_bit(nr,addr)		\
-	__set_bit((nr),(unsigned long *)(addr))
-#define minix_test_and_clear_bit(nr,addr) \
-	__test_and_clear_bit((nr),(unsigned long *)(addr))
-#define minix_test_bit(nr,addr)		\
-	test_bit((nr),(unsigned long *)(addr))
-#define minix_find_first_zero_bit(addr,size) \
-	find_first_zero_bit((unsigned long *)(addr),(size))
-
-#endif /* _ASM_GENERIC_BITOPS_MINIX_H_ */