This avoids that new requests are queued while __dm_destroy() is in progress.
Signed-off-by: Bart Van Assche <[email protected]> --- drivers/md/dm.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 0775411..4aa7030 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1875,6 +1875,7 @@ EXPORT_SYMBOL_GPL(dm_device_name); static void __dm_destroy(struct mapped_device *md, bool wait) { + struct request_queue *q = dm_get_md_queue(md); struct dm_table *map; int srcu_idx; @@ -1885,6 +1886,10 @@ static void __dm_destroy(struct mapped_device *md, bool wait) set_bit(DMF_FREEING, &md->flags); spin_unlock(&_minor_lock); + spin_lock_irq(q->queue_lock); + queue_flag_set(QUEUE_FLAG_DYING, q); + spin_unlock_irq(q->queue_lock); + if (dm_request_based(md) && md->kworker_task) flush_kthread_worker(&md->kworker); -- 2.9.3 -- dm-devel mailing list [email protected] https://www.redhat.com/mailman/listinfo/dm-devel
