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-rw-r--r--include/linux/memcontrol.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index b845e908e76e..83e2858aecf2 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -1440,6 +1440,18 @@ 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())
+ return true;
+
+ /* Allow remote memcg charging in kthread contexts. */
+ if ((!current->mm || (current->flags & PF_KTHREAD)) &&
+ !current->active_memcg)
+ return true;
+ return false;
+}
+
static inline int memcg_kmem_charge_page(struct page *page, gfp_t gfp,
int order)
{