X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=drivers%2Fmd%2Fraid5.h;h=d05144278690ca9b8cb4ad933d6d23dc36b9b0f8;hb=795e633a2dc6cbbeac68bc7f6006082150d38bb7;hp=02c3bf8fbfe7aa1b0a1c568605393dc3769c6b18;hpb=6ac15baacb6ecd87c66209627753b96ded3b4515;p=firefly-linux-kernel-4.4.55.git

diff --git a/drivers/md/raid5.h b/drivers/md/raid5.h
index 02c3bf8fbfe7..d05144278690 100644
--- a/drivers/md/raid5.h
+++ b/drivers/md/raid5.h
@@ -482,7 +482,8 @@ struct r5conf {
 	 */
 	int			active_name;
 	char			cache_name[2][32];
-	struct kmem_cache		*slab_cache; /* for allocating stripes */
+	struct kmem_cache	*slab_cache; /* for allocating stripes */
+	struct mutex		cache_size_mutex; /* Protect changes to cache size */
 
 	int			seq_flush, seq_write;
 	int			quiesce;