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-rw-r--r--drivers/md/raid5.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 67ca9c3d2939..f1feadeb7bb2 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -6103,6 +6103,7 @@ static int run(struct mddev *mddev)
blk_queue_io_min(mddev->queue, chunk_size);
blk_queue_io_opt(mddev->queue, chunk_size *
(conf->raid_disks - conf->max_degraded));
+ mddev->queue->limits.raid_partial_stripes_expensive = 1;
/*
* We can only discard a whole stripe. It doesn't make sense to
* discard data disk but write parity disk