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authorIngo Molnar <mingo@kernel.org>2016-08-18 18:41:12 +0200
committerIngo Molnar <mingo@kernel.org>2016-08-18 18:41:12 +0200
commitf594d0b9b34aeb8e3ffa524eaa8a4085afb56d22 (patch)
tree7ef81ad042bcfe78dc0f41e05cebfdbc268871c4 /include/linux/page_ref.h
parentb3830e8d478cd9fe33e820425ce431c8ef280967 (diff)
parent7b0501b1e7cddd32b265178e32d332bdfbb532d4 (diff)
Merge branch 'x86/urgent' into x86/asm, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/page_ref.h')
-rw-r--r--include/linux/page_ref.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/page_ref.h b/include/linux/page_ref.h
index 8b5e0a9f2431..610e13271918 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);