linux-next: duplicate patch in the btrfs tree

Hi all,

The following commit is also in the btrfs-fixes tree as a different commit (but the same patch):

f4c30cb4a62e ("btrfs: fix the length of reserved qgroup to free")

This is commit

2b084d820594 ("btrfs: fix the length of reserved qgroup to free")

in the btrfs-fixes tree.

Cheers,
Stephen Rothwell