Btrfs: balance btree more often
With the new back reference code, the cost of a balance has gone down
in terms of the number of back reference updates done. This commit
makes us more aggressively balance leaves and nodes as they become
less full.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 2f633e7..60a45f3 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -1651,7 +1651,7 @@
}
b = p->nodes[level];
} else if (ins_len < 0 && btrfs_header_nritems(b) <
- BTRFS_NODEPTRS_PER_BLOCK(root) / 4) {
+ BTRFS_NODEPTRS_PER_BLOCK(root) / 2) {
int sret;
sret = reada_for_balance(root, p, level);
@@ -3807,7 +3807,7 @@
}
/* delete the leaf if it is mostly empty */
- if (used < BTRFS_LEAF_DATA_SIZE(root) / 4) {
+ if (used < BTRFS_LEAF_DATA_SIZE(root) / 2) {
/* push_leaf_left fixes the path.
* make sure the path still points to our leaf
* for possible call to del_ptr below