From: Chris Mason <chris.mason@oracle.com>
Date: Fri, 19 Oct 2007 18:01:21 +0000 (-0400)
Subject: Btrfs: Fix split_leaf to avoid incorrect double splits
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=5ee78ac70f6c01f2a5acf662c2af975665710edc;p=mv-sheeva.git

Btrfs: Fix split_leaf to avoid incorrect double splits

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

diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index e8466940fa3..53e40b5c084 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -1865,7 +1865,11 @@ static int split_leaf(struct btrfs_trans_handle *trans, struct btrfs_root
 				return ret;
 			}
 			mid = slot;
-			double_split = 1;
+			if (mid != nritems &&
+			    leaf_space_used(l, mid, nritems - mid) +
+			    space_needed > BTRFS_LEAF_DATA_SIZE(root)) {
+				double_split = 1;
+			}
 		}
 	}
 	nritems = nritems - mid;