6248a0666c8a ("pstore: Add proper unregister lock checking")
cab12fd04938 ("pstore: Convert "psinfo" locking to mutex")
c30b20cd96a7 ("pstore: Rename "pstore_lock" to "psinfo_lock"")
e7c1c00cf3fa ("pstore: Drop useless try_module_get() for backend")
ea84b580b955 ("pstore: Convert buf_lock to semaphore")