debugfs_ulong_get 601 fs/debugfs/file.c DEFINE_DEBUGFS_ATTRIBUTE(fops_ulong, debugfs_ulong_get, debugfs_ulong_set, debugfs_ulong_get 603 fs/debugfs/file.c DEFINE_DEBUGFS_ATTRIBUTE(fops_ulong_ro, debugfs_ulong_get, NULL, "%llu\n");