From: Miao Xie <miaox@cn.fujitsu.com>
Date: Wed, 13 Apr 2011 05:19:21 +0000 (+0800)
Subject: Btrfs: Fix incorrect inode nlink in btrfs_link()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=3153495d8ed6a9bb9f00aea42c18dc488a885dd6;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

Btrfs: Fix incorrect inode nlink in btrfs_link()

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

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Singed-off-by: Li Zefan <lizf@cn.fujitsu.com>
---

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index b9f7f5258343..a4157cfdd533 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);