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mm/page_isolation: do some cleanup in "undo_isolate_page_range"

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Use "IS_ALIGNED" to judge the alignment, rather than directly judging.

Signed-off-by: Wang Xiaoqiang <wang_xiaoq@126.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Wang Xiaoqiang 2016-01-15 16:57:13 -08:00 committed by Linus Torvalds
parent 036fbb21de
commit 6f8d2b8a26
1 changed files with 4 additions and 2 deletions
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6
mm/page_isolation.c
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@ -196,8 +196,10 @@ int undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
{
unsigned long pfn;
struct page *page;
BUG_ON((start_pfn) & (pageblock_nr_pages - 1));
BUG_ON((end_pfn) & (pageblock_nr_pages - 1));
BUG_ON(!IS_ALIGNED(start_pfn, pageblock_nr_pages));
BUG_ON(!IS_ALIGNED(end_pfn, pageblock_nr_pages));
for (pfn = start_pfn;
pfn < end_pfn;
pfn += pageblock_nr_pages) {