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-rw-r--r--block/blk-sysfs.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index 3ff9bba3379..cac4e9febe6 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -209,10 +209,14 @@ static ssize_t queue_iostats_store(struct request_queue *q, const char *page,
ssize_t ret = queue_var_store(&stats, page, count);
spin_lock_irq(q->queue_lock);
+ elv_quiesce_start(q);
+
if (stats)
queue_flag_set(QUEUE_FLAG_IO_STAT, q);
else
queue_flag_clear(QUEUE_FLAG_IO_STAT, q);
+
+ elv_quiesce_end(q);
spin_unlock_irq(q->queue_lock);
return ret;