[<0>] __filemap_fdatawait_range+0x8b/0xe0
[<0>] filemap_fdatawait_range+0xe/0x20
[<0>] __btrfs_wait_marked_extents.isra.0+0xc6/0x100 [btrfs]
[<0>] btrfs_wait_extents+0x15/0x30 [btrfs]
[<0>] btrfs_write_and_wait_transaction.isra.0+0x8e/0xd0 [btrfs]
[<0>] btrfs_commit_transaction+0x711/0x9a0 [btrfs]
[<0>] prepare_to_relocate+0x103/0x150 [btrfs]
[<0>] relocate_block_group+0x72/0x620 [btrfs]
[<0>] btrfs_relocate_block_group+0x156/0x2d0 [btrfs]
[<0>] btrfs_relocate_chunk+0x31/0xa0 [btrfs]
[<0>] btrfs_balance+0x71a/0xee0 [btrfs]
[<0>] btrfs_ioctl_balance+0x292/0x340 [btrfs]
[<0>] btrfs_ioctl+0x84c/0x3060 [btrfs]
[<0>] do_vfs_ioctl+0x43d/0x6c0
[<0>] ksys_ioctl+0x5e/0x90
[<0>] __x64_sys_ioctl+0x16/0x20
[<0>] do_syscall_64+0x5f/0x1d0
[<0>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
