[PATCH 1/2] KEYS: add user_key_payload_rcu()

user_key_payload() is wrapper for rcu_dereference_protected(), and can't be used with just rcu_read_lock() held. This patch adds user_key_payload_rcu() for accessing key payload in RCU read-side section, without the need to hold key semaphore. Signed-off-by: Jan Stancek ---

[PATCH 1/2] KEYS: add user_key_payload_rcu()

user_key_payload() is wrapper for rcu_dereference_protected(), and can't be used with just rcu_read_lock() held. This patch adds user_key_payload_rcu() for accessing key payload in RCU read-side section, without the need to hold key semaphore. Signed-off-by: Jan Stancek ---