From: Wang Shilong <wangshilong1991@gmail.com>
Date: Wed, 24 Dec 2014 06:45:30 +0000 (+0800)
Subject: Btrfs: call inode_dec_link_count() on mkdir error path
X-Git-Tag: v3.19-rc4~17^2~2
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=c7cfb8a5405a34777d670f7a5441bb2c7ca9730f;p=~emulex%2Finfiniband.git

Btrfs: call inode_dec_link_count() on mkdir error path

In btrfs_mkdir(), if it fails to create dir, we should
clean up existed items, setting inode's link properly
to make sure it could be cleaned up properly.

Signed-off-by: Wang Shilong <wangshilong1991@gmail.com>
Signed-off-by: Chris Mason <clm@fb.com>
---

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 8de23355f6c..8a036ed234a 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -6255,8 +6255,10 @@ static int btrfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
 
 out_fail:
 	btrfs_end_transaction(trans, root);
-	if (drop_on_err)
+	if (drop_on_err) {
+		inode_dec_link_count(inode);
 		iput(inode);
+	}
 	btrfs_balance_delayed_items(root);
 	btrfs_btree_balance_dirty(root);
 	return err;