md/raid5: In ops_run_io, inc nr_pending before calling md_wait_for_blocked_rdev

[deliverable/linux.git] / drivers / md / raid5.c

diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 9567a9c83a1fc6e178363765ad90e049c06df320..befadb41a11f0c77bf68cd7bda5af1dd7ffef785 100644 (file)
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -606,6 +606,12 @@ static void ops_run_io(struct stripe_head *sh, struct stripe_head_state *s)
                                         * a chance*/
                                        md_check_recovery(conf->mddev);
                                }
+                               /*
+                                * Because md_wait_for_blocked_rdev
+                                * will dec nr_pending, we must
+                                * increment it first.
+                                */
+                               atomic_inc(&rdev->nr_pending);
                                md_wait_for_blocked_rdev(rdev, conf->mddev);
                        } else {
                                /* Acknowledged bad block - skip the write */