From: Zhaoyang Huang <zhaoyang.huang@xxxxxxxxxx> Since page->mapping is vacant in the pages which used by kernel(drivers etc) Have it record current context to help tracking the page's owner in system memory dump. Signed-off-by: Zhaoyang Huang <zhaoyang.huang@xxxxxxxxxx> --- mm/page_alloc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index c595274..2757d10 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2430,6 +2430,8 @@ static void prep_new_page(struct page *page, unsigned int order, gfp_t gfp_flags set_page_pfmemalloc(page); else clear_page_pfmemalloc(page); + + page->mapping = (struct address_space *)current; } /* -- 1.9.1
