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bitops: remove minix bitops from asm/bitops.h

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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 <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Acked-by: Greg Ungerer <[email protected]>
Cc: Geert Uytterhoeven <[email protected]>
Cc: Roman Zippel <[email protected]>
Cc: Andreas Schwab <[email protected]>
Cc: Martin Schwidefsky <[email protected]>
Cc: Heiko Carstens <[email protected]>
Cc: Yoshinori Sato <[email protected]>
Cc: Michal Simek <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Hirokazu Takata <[email protected]>
Acked-by: Ralf Baechle <[email protected]>
Acked-by: Paul Mundt <[email protected]>
Cc: Chris Zankel <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Akinobu Mita 2011-03-23 16:42:16 -07:00 • committed by Linus Torvalds
commit 61f2e7b0f4
27 changed files with 82 additions and 110 deletions
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2
arch/alpha/include/asm/bitops.h
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@ -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 */