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    SubjectRe: [PATCH 22/22] bitops: remove minix bitops from asm/bitops.h
    Date
    Akinobu Mita <akinobu.mita@gmail.com> writes:

    > 2010/10/16 Andreas Schwab <schwab@linux-m68k.org>:
    >> Akinobu Mita <akinobu.mita@gmail.com> writes:
    >>
    >>> m68knommu is big-endian minixfs but m68k (mmu) is little-endian minixfs
    >>> if I read arch/m68k/include/asm/bitops_{mm,no}.h correctly.
    >>
    >> Don't be confused by ^16, this is for the 16bit/32bit indexing
    >> correction.  The nommu version uses big-endian 32bit indexing which yet
    >> another format.
    >
    > Oh, I see. I misunderstood.
    >
    > So we need a special handling for it to keep compatibility.

    IMHO we only need two versions: big-endian filesystem with big-endian
    16bit indexed bitmaps and little-endian filesystem with little-endian
    bitmaps. The rest is just the result of careless copying. Note that
    the minix filesystem does no byte swapping, so native byte order is the
    only sensible mode.

    Andreas.

    --
    Andreas Schwab, schwab@linux-m68k.org
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