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    Subject[PATCH 03/18] lib: bitmap: Make nbits parameter of bitmap_equal unsigned
    Date
    The compiler can generate slightly smaller and simpler code when it
    knows that "nbits" is non-negative. Since no-one passes a
    negative bit-count, this shouldn't affect the semantics.

    Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
    ---
    include/linux/bitmap.h | 2 +-
    lib/bitmap.c | 4 ++--
    2 files changed, 3 insertions(+), 3 deletions(-)

    diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h
    index bc7e520..1e0f46c 100644
    --- a/include/linux/bitmap.h
    +++ b/include/linux/bitmap.h
    @@ -91,7 +91,7 @@
    extern int __bitmap_empty(const unsigned long *bitmap, unsigned int nbits);
    extern int __bitmap_full(const unsigned long *bitmap, unsigned int nbits);
    extern int __bitmap_equal(const unsigned long *bitmap1,
    - const unsigned long *bitmap2, int bits);
    + const unsigned long *bitmap2, unsigned int nbits);
    extern void __bitmap_complement(unsigned long *dst, const unsigned long *src,
    int bits);
    extern void __bitmap_shift_right(unsigned long *dst,
    diff --git a/lib/bitmap.c b/lib/bitmap.c
    index 9859f38..d6bb955 100644
    --- a/lib/bitmap.c
    +++ b/lib/bitmap.c
    @@ -71,9 +71,9 @@ int __bitmap_full(const unsigned long *bitmap, unsigned int bits)
    EXPORT_SYMBOL(__bitmap_full);

    int __bitmap_equal(const unsigned long *bitmap1,
    - const unsigned long *bitmap2, int bits)
    + const unsigned long *bitmap2, unsigned int bits)
    {
    - int k, lim = bits/BITS_PER_LONG;
    + unsigned int k, lim = bits/BITS_PER_LONG;
    for (k = 0; k < lim; ++k)
    if (bitmap1[k] != bitmap2[k])
    return 0;
    --
    1.9.2


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