Akinobu Mita
61f2e7b0f4
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 >
2011-03-23 19:46:22 -07:00
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