diff options
| -rw-r--r-- | drivers/md/dm.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index a0ece87..8f37ed2 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -2335,7 +2335,7 @@ static struct dm_table *__bind(struct mapped_device *md, struct dm_table *t, merge_is_optional = dm_table_merge_is_optional(t); - old_map = rcu_dereference(md->map); + old_map = rcu_dereference_protected(md->map, lockdep_is_held(&md->suspend_lock)); rcu_assign_pointer(md->map, t); md->immutable_target_type = dm_table_get_immutable_target_type(t); @@ -2355,7 +2355,7 @@ static struct dm_table *__bind(struct mapped_device *md, struct dm_table *t, */ static struct dm_table *__unbind(struct mapped_device *md) { - struct dm_table *map = rcu_dereference(md->map); + struct dm_table *map = rcu_dereference_protected(md->map, 1); if (!map) return NULL; @@ -2850,7 +2850,7 @@ retry: goto retry; } - map = rcu_dereference(md->map); + map = rcu_dereference_protected(md->map, lockdep_is_held(&md->suspend_lock)); r = __dm_suspend(md, map, suspend_flags, TASK_INTERRUPTIBLE); if (r) @@ -2908,7 +2908,7 @@ retry: goto retry; } - map = rcu_dereference(md->map); + map = rcu_dereference_protected(md->map, lockdep_is_held(&md->suspend_lock)); if (!map || !dm_table_get_size(map)) goto out; @@ -2943,7 +2943,7 @@ static void __dm_internal_suspend(struct mapped_device *md, unsigned suspend_fla return; /* nest suspend */ } - map = rcu_dereference(md->map); + map = rcu_dereference_protected(md->map, lockdep_is_held(&md->suspend_lock)); /* * Using TASK_UNINTERRUPTIBLE because only NOFLUSH internal suspend is |