get rid of useless dget_parent() in btrfs rename() and link()

->d_parent is locked and stable there...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 2 insertions, 4 deletions

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index bcb20a9a3b93..2548a04a0230 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -4766,11 +4766,10 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir,
         if (err) {
                 drop_inode = 1;
         } else {
-                struct dentry *parent = dget_parent(dentry);
+                struct dentry *parent = dentry->d_parent;
                 err = btrfs_update_inode(trans, root, inode);
                 BUG_ON(err);
                 btrfs_log_new_name(trans, inode, NULL, parent);
-                dput(parent);
         }
 
         nr = trans->blocks_used;
@@ -7062,9 +7061,8 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry,
         BUG_ON(ret);
 
         if (old_ino != BTRFS_FIRST_FREE_OBJECTID) {
-                struct dentry *parent = dget_parent(new_dentry);
+                struct dentry *parent = new_dentry->d_parent;
                 btrfs_log_new_name(trans, old_inode, old_dir, parent);
-                dput(parent);
                 btrfs_end_log_trans(root);
         }
 out_fail: