bcache: bugfix - gc thread now gets woken when cache is full

Signed-off-by: Nicholas Swenson <nks@daterainc.com>
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index fcdb59f..675229b 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -354,14 +354,14 @@
 	struct data_insert_op *op = container_of(cl, struct data_insert_op, cl);
 	struct bio *bio = op->bio, *n;
 
-	if (op->bypass)
-		return bch_data_invalidate(cl);
-
 	if (atomic_sub_return(bio_sectors(bio), &op->c->sectors_to_gc) < 0) {
 		set_gc_sectors(op->c);
 		wake_up_gc(op->c);
 	}
 
+	if (op->bypass)
+		return bch_data_invalidate(cl);
+
 	/*
 	 * Journal writes are marked REQ_FLUSH; if the original write was a
 	 * flush, it'll wait on the journal write.