From: Chris Mason <chris.mason@oracle.com>
Date: Sat, 28 Apr 2007 19:17:08 +0000 (-0400)
Subject: Btrfs: prealloc more blocks for the extent map
X-Git-Tag: v2.6.29-rc1~27^2~9^2~55^2~56^2~30^2~576
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=308535a05e4c39d2be26e0aeee722682deeb6f77;p=karo-tx-linux.git

Btrfs: prealloc more blocks for the extent map

Signed-off-by: Chris Mason <chris.mason@oracle.com>
---

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 652cf305a967..62051a36664a 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -541,7 +541,7 @@ static int find_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root
 	if (num_blocks == 0) {
 		fill_prealloc = 1;
 		num_blocks = 1;
-		total_needed = min(level + 2, BTRFS_MAX_LEVEL) * 3;
+		total_needed = (min(level + 1, BTRFS_MAX_LEVEL) + 2) * 3;
 	}
 	find_search_start(root, 0);
 	if (info->block_group_cache &&