X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=block%2Fblk-core.c;h=ea70e6c80cd34f0c2b563ceabcc7189027fc5182;hb=e27fc7e476077c724f313a3ddec44ad26c49f678;hp=f43c8a5840ae488131dbf395d5eaf96e2fea876d;hpb=94956eed14b4b16d401c8ad36d68df0608f968cb;p=firefly-linux-kernel-4.4.55.git

diff --git a/block/blk-core.c b/block/blk-core.c
index f43c8a5840ae..ea70e6c80cd3 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1379,15 +1379,19 @@ get_rq:
 		 */
 		if (list_empty(&plug->list))
 			trace_block_plug(q);
-		else if (!plug->should_sort) {
-			struct request *__rq;
+		else {
+			if (!plug->should_sort) {
+				struct request *__rq;
 
-			__rq = list_entry_rq(plug->list.prev);
-			if (__rq->q != q)
-				plug->should_sort = 1;
+				__rq = list_entry_rq(plug->list.prev);
+				if (__rq->q != q)
+					plug->should_sort = 1;
+			}
+			if (request_count >= BLK_MAX_REQUEST_COUNT) {
+				blk_flush_plug_list(plug, false);
+				trace_block_plug(q);
+			}
 		}
-		if (request_count >= BLK_MAX_REQUEST_COUNT)
-			blk_flush_plug_list(plug, false);
 		list_add_tail(&req->queuelist, &plug->list);
 		drive_stat_acct(req, 1);
 	} else {