From: Chris Mason <chris.mason@oracle.com>
Date: Thu, 24 Apr 2008 14:18:25 +0000 (-0400)
Subject: Keep more pointers free in the nodes for double splits
X-Git-Tag: upstream/0.20.rc1~276
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d8ecd9205a5af776cb77e0c153eaf4dd4cb703dd;hp=3ce95795030eca164c1a78dae013c78a65602b43;p=platform%2Fupstream%2Fbtrfs-progs.git

Keep more pointers free in the nodes for double splits
---

diff --git a/ctree.c b/ctree.c
index eea7936..184d842 100644
--- a/ctree.c
+++ b/ctree.c
@@ -1107,7 +1107,7 @@ again:
 				slot -= 1;
 			p->slots[level] = slot;
 			if (ins_len > 0 && btrfs_header_nritems(b) >=
-			    BTRFS_NODEPTRS_PER_BLOCK(root) - 1) {
+			    BTRFS_NODEPTRS_PER_BLOCK(root) - 3) {
 				int sret = split_node(trans, root, p, level);
 				BUG_ON(sret > 0);
 				if (sret)
@@ -1446,7 +1446,7 @@ static int split_node(struct btrfs_trans_handle *trans, struct btrfs_root
 		ret = push_nodes_for_insert(trans, root, path, level);
 		c = path->nodes[level];
 		if (!ret && btrfs_header_nritems(c) <
-		    BTRFS_NODEPTRS_PER_BLOCK(root) - 1)
+		    BTRFS_NODEPTRS_PER_BLOCK(root) - 3)
 			return 0;
 		if (ret < 0)
 			return ret;