From df9b2b4a4aa49f874f8507680a533369e4b9c378 Mon Sep 17 00:00:00 2001 From: David Hildenbrand Date: Mon, 20 Jun 2016 12:09:41 +0200 Subject: [PATCH] mm/page_ref: introduce page_ref_inc_return Let's introduce that helper. Signed-off-by: David Hildenbrand Acked-by: Andrew Morton Signed-off-by: Christian Borntraeger --- include/linux/page_ref.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/include/linux/page_ref.h b/include/linux/page_ref.h index 8b5e0a9..610e132 100644 --- a/include/linux/page_ref.h +++ b/include/linux/page_ref.h @@ -124,6 +124,15 @@ static inline int page_ref_sub_and_test(struct page *page, int nr) return ret; } +static inline int page_ref_inc_return(struct page *page) +{ + int ret = atomic_inc_return(&page->_refcount); + + if (page_ref_tracepoint_active(__tracepoint_page_ref_mod_and_return)) + __page_ref_mod_and_return(page, 1, ret); + return ret; +} + static inline int page_ref_dec_and_test(struct page *page) { int ret = atomic_dec_and_test(&page->_refcount); -- 2.7.4