From: Mike Snitzer <snitzer@xxxxxxxxxx>
Add wrapper to extract the request_queue from a
mapped device.
Signed-off-by: Mike Snitzer <snitzer@xxxxxxxxxx>
Signed-off-by: Hannes Reinecke <hare@xxxxxxx>
---
drivers/md/dm.c | 5 +++++
drivers/md/dm.h | 1 +
2 files changed, 6 insertions(+)
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 8c53b09..341991f 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -475,6 +475,11 @@ sector_t dm_get_size(struct mapped_device *md)
return get_capacity(md->disk);
}
+struct request_queue *dm_get_md_queue(struct mapped_device *md)
+{
+ return md->queue;
+}
+
struct dm_stats *dm_get_stats(struct mapped_device *md)
{
return &md->stats;
diff --git a/drivers/md/dm.h b/drivers/md/dm.h
index c4569f0..1b2ca8a 100644
--- a/drivers/md/dm.h
+++ b/drivers/md/dm.h
@@ -189,6 +189,7 @@ int dm_lock_for_deletion(struct mapped_device *md, bool mark_deferred, bool only
int dm_cancel_deferred_remove(struct mapped_device *md);
int dm_request_based(struct mapped_device *md);
sector_t dm_get_size(struct mapped_device *md);
+struct request_queue *dm_get_md_queue(struct mapped_device *md);
struct dm_stats *dm_get_stats(struct mapped_device *md);
int dm_kobject_uevent(struct mapped_device *md, enum kobject_action action,
--
1.7.12.4
--
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