From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sun, 17 Jul 2011 03:09:10 +0000 (-0400)
Subject: get rid of useless dget_parent() in btrfs rename() and link()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=10d9f309d88ca7f47133d57e99b72810f119f75b;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

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>
---

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: