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uml: use DIV_ROUND_UP
I just saw similar patches in the janitor kernel's list, and spotted place it fits. Signed-off-by: Jiri Olsa <olsajiri@gmail.com> Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -1178,8 +1178,8 @@ static void cowify_bitmap(__u64 io_offset, int length, unsigned long *cow_mask,
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* by one word. Thanks to Lynn Kerby for the fix and James McMechan
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* for the original diagnosis.
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*/
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if(*cow_offset == ((bitmap_len + sizeof(unsigned long) - 1) /
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sizeof(unsigned long) - 1))
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if (*cow_offset == (DIV_ROUND_UP(bitmap_len,
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sizeof(unsigned long)) - 1))
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(*cow_offset)--;
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bitmap_words[0] = bitmap[*cow_offset];
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