Messages in this thread Patch in this message | | | From | Rolf Eike Beer <> | Subject | [PATCH] MM: use DIV_ROUND_UP() in mm/memory.c | Date | Tue, 24 Apr 2007 16:10:22 +0200 |
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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) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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