libxfs: move source files

Move all the source files that are shared with userspace into
libxfs/. This is done as one big chunk simpy to get it done
quickly

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

1 files changed, 0 insertions, 762 deletions

diff --git a/fs/xfs/xfs_dir2.c b/fs/xfs/xfs_dir2.c
deleted file mode 100644
index a0aca73..0000000
--- a/fs/xfs/xfs_dir2.c
+++ /dev/null
@@ -1,762 +0,0 @@
-/*
- * Copyright (c) 2000-2001,2005 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
- */
-#include "xfs.h"
-#include "xfs_fs.h"
-#include "xfs_format.h"
-#include "xfs_log_format.h"
-#include "xfs_trans_resv.h"
-#include "xfs_inum.h"
-#include "xfs_sb.h"
-#include "xfs_ag.h"
-#include "xfs_mount.h"
-#include "xfs_da_format.h"
-#include "xfs_da_btree.h"
-#include "xfs_inode.h"
-#include "xfs_trans.h"
-#include "xfs_inode_item.h"
-#include "xfs_bmap.h"
-#include "xfs_dir2.h"
-#include "xfs_dir2_priv.h"
-#include "xfs_error.h"
-#include "xfs_trace.h"
-#include "xfs_dinode.h"
-
-struct xfs_name xfs_name_dotdot = { (unsigned char *)"..", 2, XFS_DIR3_FT_DIR };
-
-
-/*
- * ASCII case-insensitive (ie. A-Z) support for directories that was
- * used in IRIX.
- */
-STATIC xfs_dahash_t
-xfs_ascii_ci_hashname(
-	struct xfs_name	*name)
-{
-	xfs_dahash_t	hash;
-	int		i;
-
-	for (i = 0, hash = 0; i < name->len; i++)
-		hash = tolower(name->name[i]) ^ rol32(hash, 7);
-
-	return hash;
-}
-
-STATIC enum xfs_dacmp
-xfs_ascii_ci_compname(
-	struct xfs_da_args *args,
-	const unsigned char *name,
-	int		len)
-{
-	enum xfs_dacmp	result;
-	int		i;
-
-	if (args->namelen != len)
-		return XFS_CMP_DIFFERENT;
-
-	result = XFS_CMP_EXACT;
-	for (i = 0; i < len; i++) {
-		if (args->name[i] == name[i])
-			continue;
-		if (tolower(args->name[i]) != tolower(name[i]))
-			return XFS_CMP_DIFFERENT;
-		result = XFS_CMP_CASE;
-	}
-
-	return result;
-}
-
-static struct xfs_nameops xfs_ascii_ci_nameops = {
-	.hashname	= xfs_ascii_ci_hashname,
-	.compname	= xfs_ascii_ci_compname,
-};
-
-int
-xfs_da_mount(
-	struct xfs_mount	*mp)
-{
-	struct xfs_da_geometry	*dageo;
-	int			nodehdr_size;
-
-
-	ASSERT(mp->m_sb.sb_versionnum & XFS_SB_VERSION_DIRV2BIT);
-	ASSERT((1 << (mp->m_sb.sb_blocklog + mp->m_sb.sb_dirblklog)) <=
-	       XFS_MAX_BLOCKSIZE);
-
-	mp->m_dir_inode_ops = xfs_dir_get_ops(mp, NULL);
-	mp->m_nondir_inode_ops = xfs_nondir_get_ops(mp, NULL);
-
-	nodehdr_size = mp->m_dir_inode_ops->node_hdr_size;
-	mp->m_dir_geo = kmem_zalloc(sizeof(struct xfs_da_geometry),
-				    KM_SLEEP | KM_MAYFAIL);
-	mp->m_attr_geo = kmem_zalloc(sizeof(struct xfs_da_geometry),
-				     KM_SLEEP | KM_MAYFAIL);
-	if (!mp->m_dir_geo || !mp->m_attr_geo) {
-		kmem_free(mp->m_dir_geo);
-		kmem_free(mp->m_attr_geo);
-		return ENOMEM;
-	}
-
-	/* set up directory geometry */
-	dageo = mp->m_dir_geo;
-	dageo->blklog = mp->m_sb.sb_blocklog + mp->m_sb.sb_dirblklog;
-	dageo->fsblog = mp->m_sb.sb_blocklog;
-	dageo->blksize = 1 << dageo->blklog;
-	dageo->fsbcount = 1 << mp->m_sb.sb_dirblklog;
-
-	/*
-	 * Now we've set up the block conversion variables, we can calculate the
-	 * segment block constants using the geometry structure.
-	 */
-	dageo->datablk = xfs_dir2_byte_to_da(dageo, XFS_DIR2_DATA_OFFSET);
-	dageo->leafblk = xfs_dir2_byte_to_da(dageo, XFS_DIR2_LEAF_OFFSET);
-	dageo->freeblk = xfs_dir2_byte_to_da(dageo, XFS_DIR2_FREE_OFFSET);
-	dageo->node_ents = (dageo->blksize - nodehdr_size) /
-				(uint)sizeof(xfs_da_node_entry_t);
-	dageo->magicpct = (dageo->blksize * 37) / 100;
-
-	/* set up attribute geometry - single fsb only */
-	dageo = mp->m_attr_geo;
-	dageo->blklog = mp->m_sb.sb_blocklog;
-	dageo->fsblog = mp->m_sb.sb_blocklog;
-	dageo->blksize = 1 << dageo->blklog;
-	dageo->fsbcount = 1;
-	dageo->node_ents = (dageo->blksize - nodehdr_size) /
-				(uint)sizeof(xfs_da_node_entry_t);
-	dageo->magicpct = (dageo->blksize * 37) / 100;
-
-	if (xfs_sb_version_hasasciici(&mp->m_sb))
-		mp->m_dirnameops = &xfs_ascii_ci_nameops;
-	else
-		mp->m_dirnameops = &xfs_default_nameops;
-
-	return 0;
-}
-
-void
-xfs_da_unmount(
-	struct xfs_mount	*mp)
-{
-	kmem_free(mp->m_dir_geo);
-	kmem_free(mp->m_attr_geo);
-}
-
-/*
- * Return 1 if directory contains only "." and "..".
- */
-int
-xfs_dir_isempty(
-	xfs_inode_t	*dp)
-{
-	xfs_dir2_sf_hdr_t	*sfp;
-
-	ASSERT(S_ISDIR(dp->i_d.di_mode));
-	if (dp->i_d.di_size == 0)	/* might happen during shutdown. */
-		return 1;
-	if (dp->i_d.di_size > XFS_IFORK_DSIZE(dp))
-		return 0;
-	sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
-	return !sfp->count;
-}
-
-/*
- * Validate a given inode number.
- */
-int
-xfs_dir_ino_validate(
-	xfs_mount_t	*mp,
-	xfs_ino_t	ino)
-{
-	xfs_agblock_t	agblkno;
-	xfs_agino_t	agino;
-	xfs_agnumber_t	agno;
-	int		ino_ok;
-	int		ioff;
-
-	agno = XFS_INO_TO_AGNO(mp, ino);
-	agblkno = XFS_INO_TO_AGBNO(mp, ino);
-	ioff = XFS_INO_TO_OFFSET(mp, ino);
-	agino = XFS_OFFBNO_TO_AGINO(mp, agblkno, ioff);
-	ino_ok =
-		agno < mp->m_sb.sb_agcount &&
-		agblkno < mp->m_sb.sb_agblocks &&
-		agblkno != 0 &&
-		ioff < (1 << mp->m_sb.sb_inopblog) &&
-		XFS_AGINO_TO_INO(mp, agno, agino) == ino;
-	if (unlikely(XFS_TEST_ERROR(!ino_ok, mp, XFS_ERRTAG_DIR_INO_VALIDATE,
-			XFS_RANDOM_DIR_INO_VALIDATE))) {
-		xfs_warn(mp, "Invalid inode number 0x%Lx",
-				(unsigned long long) ino);
-		XFS_ERROR_REPORT("xfs_dir_ino_validate", XFS_ERRLEVEL_LOW, mp);
-		return EFSCORRUPTED;
-	}
-	return 0;
-}
-
-/*
- * Initialize a directory with its "." and ".." entries.
- */
-int
-xfs_dir_init(
-	xfs_trans_t	*tp,
-	xfs_inode_t	*dp,
-	xfs_inode_t	*pdp)
-{
-	struct xfs_da_args *args;
-	int		error;
-
-	ASSERT(S_ISDIR(dp->i_d.di_mode));
-	error = xfs_dir_ino_validate(tp->t_mountp, pdp->i_ino);
-	if (error)
-		return error;
-
-	args = kmem_zalloc(sizeof(*args), KM_SLEEP | KM_NOFS);
-	if (!args)
-		return ENOMEM;
-
-	args->geo = dp->i_mount->m_dir_geo;
-	args->dp = dp;
-	args->trans = tp;
-	error = xfs_dir2_sf_create(args, pdp->i_ino);
-	kmem_free(args);
-	return error;
-}
-
-/*
-  Enter a name in a directory.
- */
-int
-xfs_dir_createname(
-	xfs_trans_t		*tp,
-	xfs_inode_t		*dp,
-	struct xfs_name		*name,
-	xfs_ino_t		inum,		/* new entry inode number */
-	xfs_fsblock_t		*first,		/* bmap's firstblock */
-	xfs_bmap_free_t		*flist,		/* bmap's freeblock list */
-	xfs_extlen_t		total)		/* bmap's total block count */
-{
-	struct xfs_da_args	*args;
-	int			rval;
-	int			v;		/* type-checking value */
-
-	ASSERT(S_ISDIR(dp->i_d.di_mode));
-	rval = xfs_dir_ino_validate(tp->t_mountp, inum);
-	if (rval)
-		return rval;
-	XFS_STATS_INC(xs_dir_create);
-
-	args = kmem_zalloc(sizeof(*args), KM_SLEEP | KM_NOFS);
-	if (!args)
-		return ENOMEM;
-
-	args->geo = dp->i_mount->m_dir_geo;
-	args->name = name->name;
-	args->namelen = name->len;
-	args->filetype = name->type;
-	args->hashval = dp->i_mount->m_dirnameops->hashname(name);
-	args->inumber = inum;
-	args->dp = dp;
-	args->firstblock = first;
-	args->flist = flist;
-	args->total = total;
-	args->whichfork = XFS_DATA_FORK;
-	args->trans = tp;
-	args->op_flags = XFS_DA_OP_ADDNAME | XFS_DA_OP_OKNOENT;
-
-	if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) {
-		rval = xfs_dir2_sf_addname(args);
-		goto out_free;
-	}
-
-	rval = xfs_dir2_isblock(args, &v);
-	if (rval)
-		goto out_free;
-	if (v) {
-		rval = xfs_dir2_block_addname(args);
-		goto out_free;
-	}
-
-	rval = xfs_dir2_isleaf(args, &v);
-	if (rval)
-		goto out_free;
-	if (v)
-		rval = xfs_dir2_leaf_addname(args);
-	else
-		rval = xfs_dir2_node_addname(args);
-
-out_free:
-	kmem_free(args);
-	return rval;
-}
-
-/*
- * If doing a CI lookup and case-insensitive match, dup actual name into
- * args.value. Return EEXIST for success (ie. name found) or an error.
- */
-int
-xfs_dir_cilookup_result(
-	struct xfs_da_args *args,
-	const unsigned char *name,
-	int		len)
-{
-	if (args->cmpresult == XFS_CMP_DIFFERENT)
-		return ENOENT;
-	if (args->cmpresult != XFS_CMP_CASE ||
-					!(args->op_flags & XFS_DA_OP_CILOOKUP))
-		return EEXIST;
-
-	args->value = kmem_alloc(len, KM_NOFS | KM_MAYFAIL);
-	if (!args->value)
-		return ENOMEM;
-
-	memcpy(args->value, name, len);
-	args->valuelen = len;
-	return EEXIST;
-}
-
-/*
- * Lookup a name in a directory, give back the inode number.
- * If ci_name is not NULL, returns the actual name in ci_name if it differs
- * to name, or ci_name->name is set to NULL for an exact match.
- */
-
-int
-xfs_dir_lookup(
-	xfs_trans_t	*tp,
-	xfs_inode_t	*dp,
-	struct xfs_name	*name,
-	xfs_ino_t	*inum,		/* out: inode number */
-	struct xfs_name *ci_name)	/* out: actual name if CI match */
-{
-	struct xfs_da_args *args;
-	int		rval;
-	int		v;		/* type-checking value */
-
-	ASSERT(S_ISDIR(dp->i_d.di_mode));
-	XFS_STATS_INC(xs_dir_lookup);
-
-	/*
-	 * We need to use KM_NOFS here so that lockdep will not throw false
-	 * positive deadlock warnings on a non-transactional lookup path. It is
-	 * safe to recurse into inode recalim in that case, but lockdep can't
-	 * easily be taught about it. Hence KM_NOFS avoids having to add more
-	 * lockdep Doing this avoids having to add a bunch of lockdep class
-	 * annotations into the reclaim path for the ilock.
-	 */
-	args = kmem_zalloc(sizeof(*args), KM_SLEEP | KM_NOFS);
-	args->geo = dp->i_mount->m_dir_geo;
-	args->name = name->name;
-	args->namelen = name->len;
-	args->filetype = name->type;
-	args->hashval = dp->i_mount->m_dirnameops->hashname(name);
-	args->dp = dp;
-	args->whichfork = XFS_DATA_FORK;
-	args->trans = tp;
-	args->op_flags = XFS_DA_OP_OKNOENT;
-	if (ci_name)
-		args->op_flags |= XFS_DA_OP_CILOOKUP;
-
-	if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) {
-		rval = xfs_dir2_sf_lookup(args);
-		goto out_check_rval;
-	}
-
-	rval = xfs_dir2_isblock(args, &v);
-	if (rval)
-		goto out_free;
-	if (v) {
-		rval = xfs_dir2_block_lookup(args);
-		goto out_check_rval;
-	}
-
-	rval = xfs_dir2_isleaf(args, &v);
-	if (rval)
-		goto out_free;
-	if (v)
-		rval = xfs_dir2_leaf_lookup(args);
-	else
-		rval = xfs_dir2_node_lookup(args);
-
-out_check_rval:
-	if (rval == EEXIST)
-		rval = 0;
-	if (!rval) {
-		*inum = args->inumber;
-		if (ci_name) {
-			ci_name->name = args->value;
-			ci_name->len = args->valuelen;
-		}
-	}
-out_free:
-	kmem_free(args);
-	return rval;
-}
-
-/*
- * Remove an entry from a directory.
- */
-int
-xfs_dir_removename(
-	xfs_trans_t	*tp,
-	xfs_inode_t	*dp,
-	struct xfs_name	*name,
-	xfs_ino_t	ino,
-	xfs_fsblock_t	*first,		/* bmap's firstblock */
-	xfs_bmap_free_t	*flist,		/* bmap's freeblock list */
-	xfs_extlen_t	total)		/* bmap's total block count */
-{
-	struct xfs_da_args *args;
-	int		rval;
-	int		v;		/* type-checking value */
-
-	ASSERT(S_ISDIR(dp->i_d.di_mode));
-	XFS_STATS_INC(xs_dir_remove);
-
-	args = kmem_zalloc(sizeof(*args), KM_SLEEP | KM_NOFS);
-	if (!args)
-		return ENOMEM;
-
-	args->geo = dp->i_mount->m_dir_geo;
-	args->name = name->name;
-	args->namelen = name->len;
-	args->filetype = name->type;
-	args->hashval = dp->i_mount->m_dirnameops->hashname(name);
-	args->inumber = ino;
-	args->dp = dp;
-	args->firstblock = first;
-	args->flist = flist;
-	args->total = total;
-	args->whichfork = XFS_DATA_FORK;
-	args->trans = tp;
-
-	if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) {
-		rval = xfs_dir2_sf_removename(args);
-		goto out_free;
-	}
-
-	rval = xfs_dir2_isblock(args, &v);
-	if (rval)
-		goto out_free;
-	if (v) {
-		rval = xfs_dir2_block_removename(args);
-		goto out_free;
-	}
-
-	rval = xfs_dir2_isleaf(args, &v);
-	if (rval)
-		goto out_free;
-	if (v)
-		rval = xfs_dir2_leaf_removename(args);
-	else
-		rval = xfs_dir2_node_removename(args);
-out_free:
-	kmem_free(args);
-	return rval;
-}
-
-/*
- * Replace the inode number of a directory entry.
- */
-int
-xfs_dir_replace(
-	xfs_trans_t	*tp,
-	xfs_inode_t	*dp,
-	struct xfs_name	*name,		/* name of entry to replace */
-	xfs_ino_t	inum,		/* new inode number */
-	xfs_fsblock_t	*first,		/* bmap's firstblock */
-	xfs_bmap_free_t	*flist,		/* bmap's freeblock list */
-	xfs_extlen_t	total)		/* bmap's total block count */
-{
-	struct xfs_da_args *args;
-	int		rval;
-	int		v;		/* type-checking value */
-
-	ASSERT(S_ISDIR(dp->i_d.di_mode));
-
-	rval = xfs_dir_ino_validate(tp->t_mountp, inum);
-	if (rval)
-		return rval;
-
-	args = kmem_zalloc(sizeof(*args), KM_SLEEP | KM_NOFS);
-	if (!args)
-		return ENOMEM;
-
-	args->geo = dp->i_mount->m_dir_geo;
-	args->name = name->name;
-	args->namelen = name->len;
-	args->filetype = name->type;
-	args->hashval = dp->i_mount->m_dirnameops->hashname(name);
-	args->inumber = inum;
-	args->dp = dp;
-	args->firstblock = first;
-	args->flist = flist;
-	args->total = total;
-	args->whichfork = XFS_DATA_FORK;
-	args->trans = tp;
-
-	if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) {
-		rval = xfs_dir2_sf_replace(args);
-		goto out_free;
-	}
-
-	rval = xfs_dir2_isblock(args, &v);
-	if (rval)
-		goto out_free;
-	if (v) {
-		rval = xfs_dir2_block_replace(args);
-		goto out_free;
-	}
-
-	rval = xfs_dir2_isleaf(args, &v);
-	if (rval)
-		goto out_free;
-	if (v)
-		rval = xfs_dir2_leaf_replace(args);
-	else
-		rval = xfs_dir2_node_replace(args);
-out_free:
-	kmem_free(args);
-	return rval;
-}
-
-/*
- * See if this entry can be added to the directory without allocating space.
- * First checks that the caller couldn't reserve enough space (resblks = 0).
- */
-int
-xfs_dir_canenter(
-	xfs_trans_t	*tp,
-	xfs_inode_t	*dp,
-	struct xfs_name	*name,		/* name of entry to add */
-	uint		resblks)
-{
-	struct xfs_da_args *args;
-	int		rval;
-	int		v;		/* type-checking value */
-
-	if (resblks)
-		return 0;
-
-	ASSERT(S_ISDIR(dp->i_d.di_mode));
-
-	args = kmem_zalloc(sizeof(*args), KM_SLEEP | KM_NOFS);
-	if (!args)
-		return ENOMEM;
-
-	args->geo = dp->i_mount->m_dir_geo;
-	args->name = name->name;
-	args->namelen = name->len;
-	args->filetype = name->type;
-	args->hashval = dp->i_mount->m_dirnameops->hashname(name);
-	args->dp = dp;
-	args->whichfork = XFS_DATA_FORK;
-	args->trans = tp;
-	args->op_flags = XFS_DA_OP_JUSTCHECK | XFS_DA_OP_ADDNAME |
-							XFS_DA_OP_OKNOENT;
-
-	if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) {
-		rval = xfs_dir2_sf_addname(args);
-		goto out_free;
-	}
-
-	rval = xfs_dir2_isblock(args, &v);
-	if (rval)
-		goto out_free;
-	if (v) {
-		rval = xfs_dir2_block_addname(args);
-		goto out_free;
-	}
-
-	rval = xfs_dir2_isleaf(args, &v);
-	if (rval)
-		goto out_free;
-	if (v)
-		rval = xfs_dir2_leaf_addname(args);
-	else
-		rval = xfs_dir2_node_addname(args);
-out_free:
-	kmem_free(args);
-	return rval;
-}
-
-/*
- * Utility routines.
- */
-
-/*
- * Add a block to the directory.
- *
- * This routine is for data and free blocks, not leaf/node blocks which are
- * handled by xfs_da_grow_inode.
- */
-int
-xfs_dir2_grow_inode(
-	struct xfs_da_args	*args,
-	int			space,	/* v2 dir's space XFS_DIR2_xxx_SPACE */
-	xfs_dir2_db_t		*dbp)	/* out: block number added */
-{
-	struct xfs_inode	*dp = args->dp;
-	struct xfs_mount	*mp = dp->i_mount;
-	xfs_fileoff_t		bno;	/* directory offset of new block */
-	int			count;	/* count of filesystem blocks */
-	int			error;
-
-	trace_xfs_dir2_grow_inode(args, space);
-
-	/*
-	 * Set lowest possible block in the space requested.
-	 */
-	bno = XFS_B_TO_FSBT(mp, space * XFS_DIR2_SPACE_SIZE);
-	count = args->geo->fsbcount;
-
-	error = xfs_da_grow_inode_int(args, &bno, count);
-	if (error)
-		return error;
-
-	*dbp = xfs_dir2_da_to_db(args->geo, (xfs_dablk_t)bno);
-
-	/*
-	 * Update file's size if this is the data space and it grew.
-	 */
-	if (space == XFS_DIR2_DATA_SPACE) {
-		xfs_fsize_t	size;		/* directory file (data) size */
-
-		size = XFS_FSB_TO_B(mp, bno + count);
-		if (size > dp->i_d.di_size) {
-			dp->i_d.di_size = size;
-			xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE);
-		}
-	}
-	return 0;
-}
-
-/*
- * See if the directory is a single-block form directory.
- */
-int
-xfs_dir2_isblock(
-	struct xfs_da_args	*args,
-	int			*vp)	/* out: 1 is block, 0 is not block */
-{
-	xfs_fileoff_t		last;	/* last file offset */
-	int			rval;
-
-	if ((rval = xfs_bmap_last_offset(args->dp, &last, XFS_DATA_FORK)))
-		return rval;
-	rval = XFS_FSB_TO_B(args->dp->i_mount, last) == args->geo->blksize;
-	ASSERT(rval == 0 || args->dp->i_d.di_size == args->geo->blksize);
-	*vp = rval;
-	return 0;
-}
-
-/*
- * See if the directory is a single-leaf form directory.
- */
-int
-xfs_dir2_isleaf(
-	struct xfs_da_args	*args,
-	int			*vp)	/* out: 1 is block, 0 is not block */
-{
-	xfs_fileoff_t		last;	/* last file offset */
-	int			rval;
-
-	if ((rval = xfs_bmap_last_offset(args->dp, &last, XFS_DATA_FORK)))
-		return rval;
-	*vp = last == args->geo->leafblk + args->geo->fsbcount;
-	return 0;
-}
-
-/*
- * Remove the given block from the directory.
- * This routine is used for data and free blocks, leaf/node are done
- * by xfs_da_shrink_inode.
- */
-int
-xfs_dir2_shrink_inode(
-	xfs_da_args_t	*args,
-	xfs_dir2_db_t	db,
-	struct xfs_buf	*bp)
-{
-	xfs_fileoff_t	bno;		/* directory file offset */
-	xfs_dablk_t	da;		/* directory file offset */
-	int		done;		/* bunmap is finished */
-	xfs_inode_t	*dp;
-	int		error;
-	xfs_mount_t	*mp;
-	xfs_trans_t	*tp;
-
-	trace_xfs_dir2_shrink_inode(args, db);
-
-	dp = args->dp;
-	mp = dp->i_mount;
-	tp = args->trans;
-	da = xfs_dir2_db_to_da(args->geo, db);
-	/*
-	 * Unmap the fsblock(s).
-	 */
-	if ((error = xfs_bunmapi(tp, dp, da, args->geo->fsbcount,
-			XFS_BMAPI_METADATA, 0, args->firstblock, args->flist,
-			&done))) {
-		/*
-		 * ENOSPC actually can happen if we're in a removename with
-		 * no space reservation, and the resulting block removal
-		 * would cause a bmap btree split or conversion from extents
-		 * to btree.  This can only happen for un-fragmented
-		 * directory blocks, since you need to be punching out
-		 * the middle of an extent.
-		 * In this case we need to leave the block in the file,
-		 * and not binval it.
-		 * So the block has to be in a consistent empty state
-		 * and appropriately logged.
-		 * We don't free up the buffer, the caller can tell it
-		 * hasn't happened since it got an error back.
-		 */
-		return error;
-	}
-	ASSERT(done);
-	/*
-	 * Invalidate the buffer from the transaction.
-	 */
-	xfs_trans_binval(tp, bp);
-	/*
-	 * If it's not a data block, we're done.
-	 */
-	if (db >= xfs_dir2_byte_to_db(args->geo, XFS_DIR2_LEAF_OFFSET))
-		return 0;
-	/*
-	 * If the block isn't the last one in the directory, we're done.
-	 */
-	if (dp->i_d.di_size > xfs_dir2_db_off_to_byte(args->geo, db + 1, 0))
-		return 0;
-	bno = da;
-	if ((error = xfs_bmap_last_before(tp, dp, &bno, XFS_DATA_FORK))) {
-		/*
-		 * This can't really happen unless there's kernel corruption.
-		 */
-		return error;
-	}
-	if (db == args->geo->datablk)
-		ASSERT(bno == 0);
-	else
-		ASSERT(bno > 0);
-	/*
-	 * Set the size to the new last block.
-	 */
-	dp->i_d.di_size = XFS_FSB_TO_B(mp, bno);
-	xfs_trans_log_inode(tp, dp, XFS_ILOG_CORE);
-	return 0;
-}