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-rw-r--r--drivers/md/multipath.c38
1 files changed, 5 insertions, 33 deletions
diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c
index 3a62d440e27b..c35890990985 100644
--- a/drivers/md/multipath.c
+++ b/drivers/md/multipath.c
@@ -106,36 +106,6 @@ static void multipath_end_request(struct bio *bio, int error)
rdev_dec_pending(rdev, conf->mddev);
}
-static void unplug_slaves(mddev_t *mddev)
-{
- multipath_conf_t *conf = mddev->private;
- int i;
-
- rcu_read_lock();
- for (i=0; i<mddev->raid_disks; i++) {
- mdk_rdev_t *rdev = rcu_dereference(conf->multipaths[i].rdev);
- if (rdev && !test_bit(Faulty, &rdev->flags)
- && atomic_read(&rdev->nr_pending)) {
- struct request_queue *r_queue = bdev_get_queue(rdev->bdev);
-
- atomic_inc(&rdev->nr_pending);
- rcu_read_unlock();
-
- blk_unplug(r_queue);
-
- rdev_dec_pending(rdev, mddev);
- rcu_read_lock();
- }
- }
- rcu_read_unlock();
-}
-
-static void multipath_unplug(struct request_queue *q)
-{
- unplug_slaves(q->queuedata);
-}
-
-
static int multipath_make_request(mddev_t *mddev, struct bio * bio)
{
multipath_conf_t *conf = mddev->private;
@@ -345,7 +315,7 @@ static int multipath_remove_disk(mddev_t *mddev, int number)
p->rdev = rdev;
goto abort;
}
- md_integrity_register(mddev);
+ err = md_integrity_register(mddev);
}
abort:
@@ -517,10 +487,12 @@ static int multipath_run (mddev_t *mddev)
*/
md_set_array_sectors(mddev, multipath_size(mddev, 0, 0));
- mddev->queue->unplug_fn = multipath_unplug;
mddev->queue->backing_dev_info.congested_fn = multipath_congested;
mddev->queue->backing_dev_info.congested_data = mddev;
- md_integrity_register(mddev);
+
+ if (md_integrity_register(mddev))
+ goto out_free_conf;
+
return 0;
out_free_conf: