btrfs_link() will insert 3 items(inode ref, dir name item and dir index item)
into the b+ tree and update 2 items(its inode, and parent''s inode) in
the b+
tree. So we should reserve space for these 5 items, not 3 items.
Reported-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
---
fs/btrfs/inode.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 8d392ed..d692df9 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -4823,10 +4823,11 @@ static int btrfs_link(struct dentry *old_dentry, struct
inode *dir,
goto fail;
/*
- * 1 item for inode ref
+ * 2 items for inode and inode ref
* 2 items for dir items
+ * 1 item for parent inode
*/
- trans = btrfs_start_transaction(root, 3);
+ trans = btrfs_start_transaction(root, 5);
if (IS_ERR(trans)) {
err = PTR_ERR(trans);
goto fail;
--
1.7.3.1
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