xfs: remove the now unused dir ops infrastructure

Signed-off-by: Christoph Hellwig <[e-mail]>
Reviewed-by: Darrick J. Wong <[e-mail]>
Signed-off-by: Darrick J. Wong <[e-mail]>

fs/xfs/Makefile

···
 				   xfs_bmap_btree.o \
 				   xfs_btree.o \
 				   xfs_da_btree.o \
-				   xfs_da_format.o \
 				   xfs_defer.o \
 				   xfs_dir2.o \
 				   xfs_dir2_block.o \

fs/xfs/libxfs/xfs_da_btree.h

···
 struct xfs_inode;
 struct xfs_trans;
 struct zone;
-struct xfs_dir_ops;
 
 /*
  * Directory/attribute geometry information. There will be one of these for each

fs/xfs/libxfs/xfs_da_format.c

···
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (c) 2000,2002,2005 Silicon Graphics, Inc.
- * Copyright (c) 2013 Red Hat, Inc.
- * All Rights Reserved.
- */
-#include "xfs.h"
-#include "xfs_fs.h"
-#include "xfs_shared.h"
-#include "xfs_format.h"
-#include "xfs_log_format.h"
-#include "xfs_trans_resv.h"
-#include "xfs_mount.h"
-#include "xfs_inode.h"
-#include "xfs_dir2.h"
-#include "xfs_dir2_priv.h"
-
-static const struct xfs_dir_ops xfs_dir2_ops = {
-};
-
-static const struct xfs_dir_ops xfs_dir2_ftype_ops = {
-};
-
-static const struct xfs_dir_ops xfs_dir3_ops = {
-};
-
-/*
- * Return the ops structure according to the current config.  If we are passed
- * an inode, then that overrides the default config we use which is based on
- * feature bits.
- */
-const struct xfs_dir_ops *
-xfs_dir_get_ops(
-	struct xfs_mount	*mp,
-	struct xfs_inode	*dp)
-{
-	if (dp)
-		return dp->d_ops;
-	if (mp->m_dir_inode_ops)
-		return mp->m_dir_inode_ops;
-	if (xfs_sb_version_hascrc(&mp->m_sb))
-		return &xfs_dir3_ops;
-	if (xfs_sb_version_hasftype(&mp->m_sb))
-		return &xfs_dir2_ftype_ops;
-	return &xfs_dir2_ops;
-}

fs/xfs/libxfs/xfs_dir2.c

···
 	ASSERT(mp->m_sb.sb_versionnum & XFS_SB_VERSION_DIRV2BIT);
 	ASSERT(xfs_dir2_dirblock_bytes(&mp->m_sb) <= XFS_MAX_BLOCKSIZE);
 
-	mp->m_dir_inode_ops = xfs_dir_get_ops(mp, NULL);
-
 	mp->m_dir_geo = kmem_zalloc(sizeof(struct xfs_da_geometry),
 				    KM_MAYFAIL);
 	mp->m_attr_geo = kmem_zalloc(sizeof(struct xfs_da_geometry),

fs/xfs/libxfs/xfs_dir2.h

···
 extern unsigned char xfs_mode_to_ftype(int mode);
 
 /*
- * directory operations vector for encode/decode routines
- */
-struct xfs_dir_ops {
-};
-
-extern const struct xfs_dir_ops *
-	xfs_dir_get_ops(struct xfs_mount *mp, struct xfs_inode *dp);
-
-/*
  * Generic directory interface routines
  */
 extern void xfs_dir_startup(void);

fs/xfs/xfs_inode.h

···
 	struct xfs_ifork	*i_cowfp;	/* copy on write extents */
 	struct xfs_ifork	i_df;		/* data fork */
 
-	/* operations vectors */
-	const struct xfs_dir_ops *d_ops;		/* directory ops vector */
-
 	/* Transaction and locking information. */
 	struct xfs_inode_log_item *i_itemp;	/* logging information */
 	mrlock_t		i_lock;		/* inode lock */

fs/xfs/xfs_iops.c

···
 		lockdep_set_class(&inode->i_rwsem,
 				  &inode->i_sb->s_type->i_mutex_dir_key);
 		lockdep_set_class(&ip->i_lock.mr_lock, &xfs_dir_ilock_class);
-		ip->d_ops = ip->i_mount->m_dir_inode_ops;
 	} else {
 		lockdep_set_class(&ip->i_lock.mr_lock, &xfs_nondir_ilock_class);
 	}

fs/xfs/xfs_mount.h

···
 struct xfs_nameops;
 struct xfs_ail;
 struct xfs_quotainfo;
-struct xfs_dir_ops;
 struct xfs_da_geometry;
 
 /* dynamic preallocation free space thresholds, 5% down to 1% */
···
 	int			m_swidth;	/* stripe width */
 	uint8_t			m_sectbb_log;	/* sectlog - BBSHIFT */
 	const struct xfs_nameops *m_dirnameops;	/* vector of dir name ops */
-	const struct xfs_dir_ops *m_dir_inode_ops; /* vector of dir inode ops */
 	uint			m_chsize;	/* size of next field */
 	atomic_t		m_active_trans;	/* number trans frozen */
 	struct xfs_mru_cache	*m_filestream;  /* per-mount filestream data */