[PATCH 3/4] Btrfs: Fix incorrect inode nlink in btrfs_link()

[Li Zefan]

From: Miao Xie <mi...@cn.fujitsu.com>

Link count of the inode is not decreased if btrfs_set_inode_index()
fails.

Signed-off-by: Miao Xie <mi...@cn.fujitsu.com>
Singed-off-by: Li Zefan <l...@cn.fujitsu.com>
---
 fs/btrfs/inode.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index b9f7f52..a4157cf 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -4846,9 +4846,6 @@ static int btrfs_link(struct dentry *old_dentry, struct 
inode *dir,
        if (inode->i_nlink == ~0U)
                return -EMLINK;
 
-       btrfs_inc_nlink(inode);
-       inode->i_ctime = CURRENT_TIME;
-
        err = btrfs_set_inode_index(dir, &index);
        if (err)
                goto fail;
@@ -4864,6 +4861,9 @@ static int btrfs_link(struct dentry *old_dentry, struct 
inode *dir,
                goto fail;
        }
 
+       btrfs_inc_nlink(inode);
+       inode->i_ctime = CURRENT_TIME;
+
        btrfs_set_trans_block_group(trans, dir);
        ihold(inode);
 
-- 
1.7.3.1
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