diff options
| author | Bart Van Assche <bart.vanassche@sandisk.com> | 2016-08-31 15:17:49 -0700 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2017-02-23 03:54:00 +0000 |
| commit | a51e427a433d5cd2389bee6ac72b5dc3cc0f2da4 (patch) | |
| tree | 1864c5e01ed15d865c1c562b4a04574628c01f0e | |
| parent | 8461bcfb9798e6adc598ce3b8adadbb86da724aa (diff) | |
dm: mark request_queue dead before destroying the DM device
commit 3b785fbcf81c3533772c52b717f77293099498d3 upstream.
This avoids that new requests are queued while __dm_destroy() is in
progress.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
[js: use md->queue instead of non-present helper]
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
| -rw-r--r-- | drivers/md/dm.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index f62d4c8bd9f9..35caa4c17c3d 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -2407,6 +2407,7 @@ EXPORT_SYMBOL_GPL(dm_device_name); static void __dm_destroy(struct mapped_device *md, bool wait) { + struct request_queue *q = md->queue; struct dm_table *map; int srcu_idx; @@ -2417,6 +2418,10 @@ 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); + /* * Take suspend_lock so that presuspend and postsuspend methods * do not race with internal suspend. |