From: Chris Mason Date: Mon, 18 May 2009 14:41:58 +0000 (-0400) Subject: Btrfs: balance btree more often X-Git-Tag: v3.0~8251^2~56 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=cfbb9308463f6dad1334884db046ccf0f1a77918;p=platform%2Fkernel%2Flinux-amlogic.git 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 --- 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 @@ setup_nodes_for_search(struct btrfs_trans_handle *trans, } 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 @@ int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, } /* 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