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| author | Wang Xiaoqiang <wangxq10@lzu.edu.cn> | 2016-01-15 16:57:13 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-15 17:56:32 -0800 |
| commit | 6f8d2b8a262c6b71e1464d488f41cccf9aafbc07 (patch) | |
| tree | 868bad4330d885f714fce601f02a69893082718f /mm/page_isolation.c | |
| parent | 036fbb21de7c74d5637bf41110c47005363f3000 (diff) | |
| download | lwn-6f8d2b8a262c6b71e1464d488f41cccf9aafbc07.tar.gz lwn-6f8d2b8a262c6b71e1464d488f41cccf9aafbc07.zip | |
mm/page_isolation: do some cleanup in "undo_isolate_page_range"
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>
Diffstat (limited to 'mm/page_isolation.c')
| -rw-r--r-- | mm/page_isolation.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/mm/page_isolation.c b/mm/page_isolation.c index 5e139fec6c6c..92c4c36501e7 100644 --- a/mm/page_isolation.c +++ b/mm/page_isolation.c @@ -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) { |