• Linus Torvalds's avatar
    x86: use generic strncpy_from_user routine · 4ae73f2d
    Linus Torvalds authored
    The generic strncpy_from_user() is not really optimal, since it is
    designed to work on both little-endian and big-endian.  And on
    little-endian you can simplify much of the logic to find the first zero
    byte, since little-endian arithmetic doesn't have to worry about the
    carry bit propagating into earlier bytes (only later bytes, which we
    don't care about).
    
    But I have patches to make the generic routines use the architecture-
    specific <asm/word-at-a-time.h> infrastructure, so that we can regain
    the little-endian optimizations.  But before we do that, switch over to
    the generic routines to make the patches each do just one well-defined
    thing.
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    4ae73f2d
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