ecryptfs: remove unnecessary d_drop calls in ecryptfs_link

Unnecessary because it would unhash perfectly valid dentries, causing them
to have to be re-looked up the next time they're needed, which presumably is
right after.
Signed-off-by: NAseem Rastogi <arastogi@cs.sunysb.edu>
Signed-off-by: NShrikar archak <shrikar84@gmail.com>
Signed-off-by: NErez Zadok <ezk@cs.sunysb.edu>
Cc: Saumitra Bhanage <sbhanage@cs.sunysb.edu>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NTyler Hicks <tyhicks@linux.vnet.ibm.com>

fs/ecryptfs/inode.c

@@ -463,9 +463,6 @@ static int ecryptfs_link(struct dentry *old_dentry, struct inode *dir,
 	unlock_dir(lower_dir_dentry);
 	dput(lower_new_dentry);
 	dput(lower_old_dentry);
-	d_drop(lower_old_dentry);
-	d_drop(new_dentry);
-	d_drop(old_dentry);
 	return rc;
 }