btrfs_bio_clone 502 fs/btrfs/extent_io.h struct bio *btrfs_bio_clone(struct bio *bio); btrfs_bio_clone 8612 fs/btrfs/inode.c bio = btrfs_bio_clone(dio_bio); btrfs_bio_clone 6619 fs/btrfs/volumes.c bio = btrfs_bio_clone(first_bio);