From 9cdb8520049629271ad411ac91ab1bea3e1cfa2b Mon Sep 17 00:00:00 2001 From: Monam Agarwal Date: Sun, 23 Mar 2014 23:58:27 +0530 Subject: dm: use RCU_INIT_POINTER instead of rcu_assign_pointer in __unbind Replace rcu_assign_pointer(p, NULL) with RCU_INIT_POINTER(p, NULL). The rcu_assign_pointer() ensures that the initialization of a structure is carried out before storing a pointer to that structure. And in the case of the NULL pointer, there is no structure to initialize. So, rcu_assign_pointer(p, NULL) can be safely converted to RCU_INIT_POINTER(p, NULL). Signed-off-by: Monam Agarwal Signed-off-by: Mike Snitzer --- drivers/md/dm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 0d52f6ff2a1..6382213dbd8 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -2163,7 +2163,7 @@ static struct dm_table *__unbind(struct mapped_device *md) return NULL; dm_table_event_callback(map, NULL, NULL); - rcu_assign_pointer(md->map, NULL); + RCU_INIT_POINTER(md->map, NULL); dm_sync_table(md); return map; -- cgit v1.2.3-70-g09d2