diff options
Diffstat (limited to 'mm/page_poison.c')
| -rw-r--r-- | mm/page_poison.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/mm/page_poison.c b/mm/page_poison.c index 89d3bc773633..479e7ea2bea6 100644 --- a/mm/page_poison.c +++ b/mm/page_poison.c @@ -71,11 +71,14 @@ static inline void clear_page_poison(struct page *page) __clear_bit(PAGE_EXT_DEBUG_POISON, &page_ext->flags); } -static inline bool page_poison(struct page *page) +bool page_is_poisoned(struct page *page) { struct page_ext *page_ext; page_ext = lookup_page_ext(page); + if (!page_ext) + return false; + return test_bit(PAGE_EXT_DEBUG_POISON, &page_ext->flags); } @@ -137,7 +140,7 @@ static void unpoison_page(struct page *page) { void *addr; - if (!page_poison(page)) + if (!page_is_poisoned(page)) return; addr = kmap_atomic(page); |