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    Subject[PATCH 1/2] kernel.h: Add DIV_ROUND_UP_ULL usage
    Date
    From: Nicholas Bellinger <nab@linux-iscsi.org>

    Add new DIV_ROUND_UP_ULL macro usage for 32-bit architectures requiring
    unsigned long long division of sectors * dev_max_sectors.

    Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
    Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
    ---
    include/linux/kernel.h | 2 ++
    1 files changed, 2 insertions(+), 0 deletions(-)

    diff --git a/include/linux/kernel.h b/include/linux/kernel.h
    index 953352a..016dcc9 100644
    --- a/include/linux/kernel.h
    +++ b/include/linux/kernel.h
    @@ -56,6 +56,8 @@

    #define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))
    #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
    +#define DIV_ROUND_UP_ULL(ll,d) \
    + ({ unsigned long long _tmp = (ll)+(d)-1; do_div(_tmp, d); _tmp; })

    /* The `const' in roundup() prevents gcc-3.3 from calling __divdi3 */
    #define roundup(x, y) ( \
    --
    1.7.2.5


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