btrfs_write_marked_extents
ret = btrfs_write_marked_extents(fs_info, dirty_pages, EXTENT_DIRTY);
int btrfs_write_marked_extents(struct btrfs_fs_info *fs_info,
ret = btrfs_write_marked_extents(fs_info, &log->dirty_log_pages, mark);
ret = btrfs_write_marked_extents(fs_info,
btrfs_write_marked_extents(log->fs_info,