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| author | Josef Bacik <jbacik@fusionio.com> | 2013-09-17 10:50:06 -0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@fusionio.com> | 2013-09-21 11:05:27 -0400 |
| commit | c4fbb4300abd6f662c7d5049d01f868af9874069 (patch) | |
| tree | c0f6c6ccb6fa345681a453b0db9d4dc9719dad7a /fs/btrfs | |
| parent | 14575aef4212d2cc02274bf1f5456f3e644f03f8 (diff) | |
| download | linux-c4fbb4300abd6f662c7d5049d01f868af9874069.tar.gz linux-c4fbb4300abd6f662c7d5049d01f868af9874069.tar.bz2 linux-c4fbb4300abd6f662c7d5049d01f868af9874069.zip | |
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>
Diffstat (limited to 'fs/btrfs')
| -rw-r--r-- | fs/btrfs/ctree.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 2491ba076b42..36490b92ee33 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -3135,7 +3135,7 @@ static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_root *root, unsigned num_items) { return (root->leafsize + root->nodesize * (BTRFS_MAX_LEVEL - 1)) * - 3 * num_items; + 2 * num_items; } /* |