diff --git a/include/linux/seqlock.h b/include/linux/seqlock.h
index dcc64b9bfc412392dd73a117b24e9020176834f8..cce6e7453592dbee0c33e2858f6c592bf1eeaf84 100644
--- a/include/linux/seqlock.h
+++ b/include/linux/seqlock.h
@@ -235,6 +235,17 @@ static inline void raw_write_seqcount_end(seqcount_t *s)
 	s->sequence++;
 }
 
+/*
+ * raw_write_seqcount_latch - redirect readers to even/odd copy
+ * @s: pointer to seqcount_t
+ */
+static inline void raw_write_seqcount_latch(seqcount_t *s)
+{
+       smp_wmb();      /* prior stores before incrementing "sequence" */
+       s->sequence++;
+       smp_wmb();      /* increment "sequence" before following stores */
+}
+
 /*
  * Sequence counter only version assumes that callers are using their
  * own mutexing.