1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/md/raid1-10.c b/drivers/md/raid1-10.c
index cd349e69ed77..76cff924b70b 100644
--- a/drivers/md/raid1-10.c
+++ b/drivers/md/raid1-10.c
@@ -110,3 +110,19 @@ static void md_bio_reset_resync_pages(struct bio *bio, struct resync_pages *rp,
 		size -= len;
 	} while (idx++ < RESYNC_PAGES && size > 0);
 }
+
+static inline bool raid1_add_bio_to_plug(struct mddev *mddev, struct bio *bio,
+				      blk_plug_cb_fn unplug)
+{
+	struct raid1_plug_cb *plug = NULL;
+	struct blk_plug_cb *cb = blk_check_plugged(unplug, mddev,
+						   sizeof(*plug));
+
+	if (!cb)
+		return false;
+
+	plug = container_of(cb, struct raid1_plug_cb, cb);
+	bio_list_add(&plug->pending, bio);
+
+	return true;
+}