No need to use specific flag for io_u fill length

The fill length already provides that information.

Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
diff --git a/verify.c b/verify.c
index 098c19b..42ea462 100644
--- a/verify.c
+++ b/verify.c
@@ -30,22 +30,19 @@
 		fill_random_buf(p, len);
 		break;
 	case 1:
-		if ((io_u->flags & IO_U_F_FILLED) &&
-		     io_u->buf_filled_len >= len) {
+		if (io_u->buf_filled_len >= len) {
 			dprint(FD_VERIFY, "using already filled verify pattern b=0 len=%u\n", len);
 			return;
 		}
 		dprint(FD_VERIFY, "fill verify pattern b=0 len=%u\n", len);
 		memset(p, td->o.verify_pattern[0], len);
-		io_u->flags |= IO_U_F_FILLED;
 		io_u->buf_filled_len = len;
 		break;
 	default: {
 		unsigned int i = 0, size = 0;
 		unsigned char *b = p;
 
-		if ((io_u->flags & IO_U_F_FILLED) &&
-		     io_u->buf_filled_len >= len) {
+		if (io_u->buf_filled_len >= len) {
 			dprint(FD_VERIFY, "using already filled verify pattern b=%d len=%u\n",
 					td->o.verify_pattern_bytes, len);
 			return;
@@ -60,7 +57,6 @@
 			memcpy(b+i, td->o.verify_pattern, size);
 			i += size;
 		}
-		io_u->flags |= IO_U_F_FILLED;
 		io_u->buf_filled_len = len;
 		break;
 		}