[PATCH v2 20/28] mm: memcg/slab: move memcg_kmem_bypass() to memcontrol.h

[Roman Gushchin <guro@fb.com>]

To make the memcg_kmem_bypass() function available outside of
the memcontrol.c, let's move it to memcontrol.h. The function
is small and nicely fits into static inline sort of functions.

It will be used from the slab code.

Signed-off-by: Roman Gushchin <guro@fb.com>
---
 include/linux/memcontrol.h | 7 +++++++
 mm/memcontrol.c            | 7 -------
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 54bfb26b5016..f578d1a24280 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -1465,6 +1465,13 @@ static inline bool memcg_kmem_enabled(void)
 	return static_branch_unlikely(&memcg_kmem_enabled_key);
 }
 
+static inline bool memcg_kmem_bypass(void)
+{
+	if (in_interrupt() || !current->mm || (current->flags & PF_KTHREAD))
+		return true;
+	return false;
+}
+
 static inline int memcg_kmem_charge_page(struct page *page, gfp_t gfp,
 					 int order)
 {
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 45bd9b1d9735..ffe7e1e9f3c0 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -2873,13 +2873,6 @@ static void memcg_schedule_kmem_cache_create(struct mem_cgroup *memcg,
 	queue_work(memcg_kmem_cache_wq, &cw->work);
 }
 
-static inline bool memcg_kmem_bypass(void)
-{
-	if (in_interrupt() || !current->mm || (current->flags & PF_KTHREAD))
-		return true;
-	return false;
-}
-
 /**
  * memcg_kmem_get_cache: select the correct per-memcg cache for allocation
  * @cachep: the original global kmem cache
-- 
2.24.1