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Subject[PATCH] MM: use DIV_ROUND_UP() in mm/memory.c
Date
This should make no difference in behaviour.

Signed-off-by: Rolf Eike Beer <eike-kernel@sf-tec.de>

---
commit 64aa7c3136258d3abc76354b5f83b9a9575169c0
tree 8037adc04b57cd6150456399b7caccf99489385a
parent bf0bd376f79cadb4f8cd454db1723eb9be0aabc1
author Rolf Eike Beer <eike-kernel@sf-tec.de> Tue, 24 Apr 2007 16:05:40 +0200
committer Rolf Eike Beer <eike-kernel@sf-tec.de> Tue, 24 Apr 2007 16:05:40
+0200

mm/memory.c | 7 +++----
1 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/mm/memory.c b/mm/memory.c
index e7066e7..45bba1f 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1838,12 +1838,11 @@ void unmap_mapping_range(struct address_space
*mapping,
{
struct zap_details details;
pgoff_t hba = holebegin >> PAGE_SHIFT;
- pgoff_t hlen = (holelen + PAGE_SIZE - 1) >> PAGE_SHIFT;
+ pgoff_t hlen = DIV_ROUND_UP(holelen, PAGE_SIZE);

/* Check for overflow. */
if (sizeof(holelen) > sizeof(hlen)) {
- long long holeend =
- (holebegin + holelen + PAGE_SIZE - 1) >> PAGE_SHIFT;
+ long long holeend = DIV_ROUND_UP(holebegin + holelen, PAGE_SIZE);
if (holeend & ~(long long)ULONG_MAX)
hlen = ULONG_MAX - hba + 1;
}
@@ -2592,7 +2591,7 @@ int make_pages_present(unsigned long addr, unsigned long
end)
write = (vma->vm_flags & VM_WRITE) != 0;
BUG_ON(addr >= end);
BUG_ON(end > vma->vm_end);
- len = (end+PAGE_SIZE-1)/PAGE_SIZE-addr/PAGE_SIZE;
+ len = DIV_ROUND_UP(end, PAGE_SIZE) - addr/PAGE_SIZE;
ret = get_user_pages(current, current->mm, addr,
len, write, 0, NULL, NULL);
if (ret < 0)
-
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