block: don't merge requests of different failfast settings

[pandora-kernel.git] / block / blk-merge.c

diff --git a/block/blk-merge.c b/block/blk-merge.c
index 39ce644..e199967 100644 (file)
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -350,6 +350,12 @@ static int attempt_merge(struct request_queue *q, struct request *req,
        if (blk_integrity_rq(req) != blk_integrity_rq(next))
                return 0;
 
+       /* don't merge requests of different failfast settings */
+       if (blk_failfast_dev(req)       != blk_failfast_dev(next)       ||
+           blk_failfast_transport(req) != blk_failfast_transport(next) ||
+           blk_failfast_driver(req)    != blk_failfast_driver(next))
+               return 0;
+
        /*
         * If we are allowed to merge, then append bio list
         * from next to rq and release next. merge_requests_fn