free_pages_check

Yinghai Lu
2008-01-08T02:43:55Z

wonder why free_pages_check mm/page_alloc.c is using bit OR than logical OR

@@ -450,9 +450,9 @@ static inline void __free_one_page(struc

static inline int free_pages_check(struct page *page)
{
- if (unlikely(page_mapcount(page) |
- (page->mapping != NULL) |
- (page_count(page) != 0) |
+ if (unlikely(page_mapcount(page) ||
+ (page->mapping != NULL) ||
+ (page_count(page) != 0) ||
(page->flags & (
1 << PG_lru |
1 << PG_private |

YH