Btrfs: fix worst case calculator for space usage
authorJosef Bacik <jbacik@fusionio.com>
Tue, 17 Sep 2013 14:50:06 +0000 (10:50 -0400)
committerChris Mason <chris.mason@fusionio.com>
Sat, 21 Sep 2013 15:05:27 +0000 (11:05 -0400)
commitc4fbb4300abd6f662c7d5049d01f868af9874069
treec0f6c6ccb6fa345681a453b0db9d4dc9719dad7a
parent14575aef4212d2cc02274bf1f5456f3e644f03f8
Btrfs: fix worst case calculator for space usage

Forever ago I made the worst case calculator say that we could potentially split
into 3 blocks for every level on the way down, which isn't right.  If we split
we're only going to get two new blocks, the one we originally cow'ed and the new
one we're going to split.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
fs/btrfs/ctree.h