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-rw-r--r--kernel/events/internal.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/events/internal.h b/kernel/events/internal.h
index 64568a69937..bdf44844955 100644
--- a/kernel/events/internal.h
+++ b/kernel/events/internal.h
@@ -26,6 +26,9 @@ struct ring_buffer {
spinlock_t event_lock;
struct list_head event_list;
+ int mmap_locked;
+ struct user_struct *mmap_user;
+
struct perf_event_mmap_page *user_page;
void *data_pages[0];
};