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kill xfs_get_dir_entry

Instead of of xfs_get_dir_entry use a macro to get the xfs_inode from
the dentry in the callers and grab the reference manually.

Only grab the reference once as it's fine to keep it over the dmapi
calls.  (And even that reference is actually superflous in Linux but
I'll leave that for another patch)

Signed-off-by: Christoph Hellwig <hch@lst.de>
Merge of xfs-linux-melb:xfs-kern:30531a by kenmcd.

  kill xfs_get_dir_entry

/*
 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
 * All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
#ifndef __XFS_UTILS_H__
#define __XFS_UTILS_H__

#define IRELE(ip)	VN_RELE(XFS_ITOV(ip))
#define IHOLD(ip)	VN_HOLD(XFS_ITOV(ip))

extern int xfs_dir_lookup_int (xfs_inode_t *, uint, bhv_vname_t *, xfs_ino_t *,
				xfs_inode_t **);
extern int xfs_truncate_file (xfs_mount_t *, xfs_inode_t *);
extern int xfs_dir_ialloc (xfs_trans_t **, xfs_inode_t *, mode_t, xfs_nlink_t,
				xfs_dev_t, cred_t *, prid_t, int,
				xfs_inode_t **, int *);
extern int xfs_droplink (xfs_trans_t *, xfs_inode_t *);
extern int xfs_bumplink (xfs_trans_t *, xfs_inode_t *);
extern void xfs_bump_ino_vers2 (xfs_trans_t *, xfs_inode_t *);

#endif	/* __XFS_UTILS_H__ */