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uml: use DIV_ROUND_UP

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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>
This commit is contained in:
Jiri Olsa 2008-05-12 14:01:56 -07:00 committed by Linus Torvalds
parent 63b9871f6e
commit 6d0742426c
1 changed files with 2 additions and 2 deletions
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4
arch/um/drivers/ubd_kern.c
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@ -1178,8 +1178,8 @@ static void cowify_bitmap(__u64 io_offset, int length, unsigned long *cow_mask,
* by one word. Thanks to Lynn Kerby for the fix and James McMechan
* for the original diagnosis.
*/
if(*cow_offset == ((bitmap_len + sizeof(unsigned long) - 1) /
sizeof(unsigned long) - 1))
if (*cow_offset == (DIV_ROUND_UP(bitmap_len,
sizeof(unsigned long)) - 1))
(*cow_offset)--;
bitmap_words[0] = bitmap[*cow_offset];