[PATCH 3.18 53/90] dm: remove duplicate dm_get_live_table() in __dm_destroy()

3.18-stable review patch. If anyone has any objections, please let me know. -- From: Corey Wright [3.18.y only, to fix a previous patch] __dm_destroy() takes io_barrier SRCU lock (dm_get_live_table) twice which leads to a deadlock. Remove taking lock before holding

[PATCH 3.18 53/90] dm: remove duplicate dm_get_live_table() in __dm_destroy()

3.18-stable review patch. If anyone has any objections, please let me know. -- From: Corey Wright [3.18.y only, to fix a previous patch] __dm_destroy() takes io_barrier SRCU lock (dm_get_live_table) twice which leads to a deadlock. Remove taking lock before holding