diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 1001438e6a32..4f4b41c454f2 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -1063,6 +1063,16 @@ __set_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
 			goto out;
 		}
 
+		/*
+		 * If this extent already has all the bits we want set, then
+		 * skip it, not necessary to split it or do anything with it.
+		 */
+		if ((state->state & bits) == bits) {
+			start = state->end + 1;
+			cache_state(state, cached_state);
+			goto search_again;
+		}
+
 		prealloc = alloc_extent_state_atomic(prealloc);
 		BUG_ON(!prealloc);
 		err = split_state(tree, state, prealloc, start);