struct page_ext *page_ext;
page_ext = lookup_page_ext(page);
+ if (!page_ext)
+ return;
__set_bit(PAGE_EXT_DEBUG_POISON, &page_ext->flags);
}
struct page_ext *page_ext;
page_ext = lookup_page_ext(page);
+ if (!page_ext)
+ return;
__clear_bit(PAGE_EXT_DEBUG_POISON, &page_ext->flags);
}
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);
}