GFS2: Rename ops_inode.c to inode.c

This is the final part of the ops_inode.c/inode.c reordering. We
are left with a single file called inode.c which now contains
all the inode operations, as expected.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

1 files changed, 0 insertions, 1990 deletions

diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c
deleted file mode 100644
index a783a7a8c0cad9..00000000000000
--- a/fs/gfs2/ops_inode.c
+++ /dev/null
@@ -1,1990 +0,0 @@
-/*
- * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
- *
- * This copyrighted material is made available to anyone wishing to use,
- * modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU General Public License version 2.
- */
-
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-#include <linux/completion.h>
-#include <linux/buffer_head.h>
-#include <linux/namei.h>
-#include <linux/mm.h>
-#include <linux/xattr.h>
-#include <linux/posix_acl.h>
-#include <linux/gfs2_ondisk.h>
-#include <linux/crc32.h>
-#include <linux/fiemap.h>
-#include <linux/security.h>
-#include <asm/uaccess.h>
-
-#include "gfs2.h"
-#include "incore.h"
-#include "acl.h"
-#include "bmap.h"
-#include "dir.h"
-#include "xattr.h"
-#include "glock.h"
-#include "inode.h"
-#include "meta_io.h"
-#include "quota.h"
-#include "rgrp.h"
-#include "trans.h"
-#include "util.h"
-#include "super.h"
-#include "glops.h"
-
-struct gfs2_skip_data {
-	u64 no_addr;
-	int skipped;
-	int non_block;
-};
-
-static int iget_test(struct inode *inode, void *opaque)
-{
-	struct gfs2_inode *ip = GFS2_I(inode);
-	struct gfs2_skip_data *data = opaque;
-
-	if (ip->i_no_addr == data->no_addr) {
-		if (data->non_block &&
-		    inode->i_state & (I_FREEING|I_CLEAR|I_WILL_FREE)) {
-			data->skipped = 1;
-			return 0;
-		}
-		return 1;
-	}
-	return 0;
-}
-
-static int iget_set(struct inode *inode, void *opaque)
-{
-	struct gfs2_inode *ip = GFS2_I(inode);
-	struct gfs2_skip_data *data = opaque;
-
-	if (data->skipped)
-		return -ENOENT;
-	inode->i_ino = (unsigned long)(data->no_addr);
-	ip->i_no_addr = data->no_addr;
-	return 0;
-}
-
-struct inode *gfs2_ilookup(struct super_block *sb, u64 no_addr, int non_block)
-{
-	unsigned long hash = (unsigned long)no_addr;
-	struct gfs2_skip_data data;
-
-	data.no_addr = no_addr;
-	data.skipped = 0;
-	data.non_block = non_block;
-	return ilookup5(sb, hash, iget_test, &data);
-}
-
-static struct inode *gfs2_iget(struct super_block *sb, u64 no_addr,
-			       int non_block)
-{
-	struct gfs2_skip_data data;
-	unsigned long hash = (unsigned long)no_addr;
-
-	data.no_addr = no_addr;
-	data.skipped = 0;
-	data.non_block = non_block;
-	return iget5_locked(sb, hash, iget_test, iget_set, &data);
-}
-
-/**
- * gfs2_set_iop - Sets inode operations
- * @inode: The inode with correct i_mode filled in
- *
- * GFS2 lookup code fills in vfs inode contents based on info obtained
- * from directory entry inside gfs2_inode_lookup().
- */
-
-static void gfs2_set_iop(struct inode *inode)
-{
-	struct gfs2_sbd *sdp = GFS2_SB(inode);
-	umode_t mode = inode->i_mode;
-
-	if (S_ISREG(mode)) {
-		inode->i_op = &gfs2_file_iops;
-		if (gfs2_localflocks(sdp))
-			inode->i_fop = &gfs2_file_fops_nolock;
-		else
-			inode->i_fop = &gfs2_file_fops;
-	} else if (S_ISDIR(mode)) {
-		inode->i_op = &gfs2_dir_iops;
-		if (gfs2_localflocks(sdp))
-			inode->i_fop = &gfs2_dir_fops_nolock;
-		else
-			inode->i_fop = &gfs2_dir_fops;
-	} else if (S_ISLNK(mode)) {
-		inode->i_op = &gfs2_symlink_iops;
-	} else {
-		inode->i_op = &gfs2_file_iops;
-		init_special_inode(inode, inode->i_mode, inode->i_rdev);
-	}
-}
-
-/**
- * gfs2_inode_lookup - Lookup an inode
- * @sb: The super block
- * @no_addr: The inode number
- * @type: The type of the inode
- * non_block: Can we block on inodes that are being freed?
- *
- * Returns: A VFS inode, or an error
- */
-
-struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned int type,
-				u64 no_addr, u64 no_formal_ino, int non_block)
-{
-	struct inode *inode;
-	struct gfs2_inode *ip;
-	struct gfs2_glock *io_gl = NULL;
-	int error;
-
-	inode = gfs2_iget(sb, no_addr, non_block);
-	ip = GFS2_I(inode);
-
-	if (!inode)
-		return ERR_PTR(-ENOBUFS);
-
-	if (inode->i_state & I_NEW) {
-		struct gfs2_sbd *sdp = GFS2_SB(inode);
-		ip->i_no_formal_ino = no_formal_ino;
-
-		error = gfs2_glock_get(sdp, no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl);
-		if (unlikely(error))
-			goto fail;
-		ip->i_gl->gl_object = ip;
-
-		error = gfs2_glock_get(sdp, no_addr, &gfs2_iopen_glops, CREATE, &io_gl);
-		if (unlikely(error))
-			goto fail_put;
-
-		set_bit(GIF_INVALID, &ip->i_flags);
-		error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, GL_EXACT, &ip->i_iopen_gh);
-		if (unlikely(error))
-			goto fail_iopen;
-
-		ip->i_iopen_gh.gh_gl->gl_object = ip;
-		gfs2_glock_put(io_gl);
-		io_gl = NULL;
-
-		if (type == DT_UNKNOWN) {
-			/* Inode glock must be locked already */
-			error = gfs2_inode_refresh(GFS2_I(inode));
-			if (error)
-				goto fail_refresh;
-		} else {
-			inode->i_mode = DT2IF(type);
-		}
-
-		gfs2_set_iop(inode);
-		unlock_new_inode(inode);
-	}
-
-	return inode;
-
-fail_refresh:
-	ip->i_iopen_gh.gh_gl->gl_object = NULL;
-	gfs2_glock_dq_uninit(&ip->i_iopen_gh);
-fail_iopen:
-	if (io_gl)
-		gfs2_glock_put(io_gl);
-fail_put:
-	ip->i_gl->gl_object = NULL;
-	gfs2_glock_put(ip->i_gl);
-fail:
-	iget_failed(inode);
-	return ERR_PTR(error);
-}
-
-struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr,
-				  u64 *no_formal_ino, unsigned int blktype)
-{
-	struct super_block *sb = sdp->sd_vfs;
-	struct gfs2_holder i_gh;
-	struct inode *inode = NULL;
-	int error;
-
-	/* Must not read in block until block type is verified */
-	error = gfs2_glock_nq_num(sdp, no_addr, &gfs2_inode_glops,
-				  LM_ST_EXCLUSIVE, GL_SKIP, &i_gh);
-	if (error)
-		return ERR_PTR(error);
-
-	error = gfs2_check_blk_type(sdp, no_addr, blktype);
-	if (error)
-		goto fail;
-
-	inode = gfs2_inode_lookup(sb, DT_UNKNOWN, no_addr, 0, 1);
-	if (IS_ERR(inode))
-		goto fail;
-
-	/* Two extra checks for NFS only */
-	if (no_formal_ino) {
-		error = -ESTALE;
-		if (GFS2_I(inode)->i_no_formal_ino != *no_formal_ino)
-			goto fail_iput;
-
-		error = -EIO;
-		if (GFS2_I(inode)->i_diskflags & GFS2_DIF_SYSTEM)
-			goto fail_iput;
-
-		error = 0;
-	}
-
-fail:
-	gfs2_glock_dq_uninit(&i_gh);
-	return error ? ERR_PTR(error) : inode;
-fail_iput:
-	iput(inode);
-	goto fail;
-}
-
-
-struct inode *gfs2_lookup_simple(struct inode *dip, const char *name)
-{
-	struct qstr qstr;
-	struct inode *inode;
-	gfs2_str2qstr(&qstr, name);
-	inode = gfs2_lookupi(dip, &qstr, 1);
-	/* gfs2_lookupi has inconsistent callers: vfs
-	 * related routines expect NULL for no entry found,
-	 * gfs2_lookup_simple callers expect ENOENT
-	 * and do not check for NULL.
-	 */
-	if (inode == NULL)
-		return ERR_PTR(-ENOENT);
-	else
-		return inode;
-}
-
-
-/**
- * gfs2_lookupi - Look up a filename in a directory and return its inode
- * @d_gh: An initialized holder for the directory glock
- * @name: The name of the inode to look for
- * @is_root: If 1, ignore the caller's permissions
- * @i_gh: An uninitialized holder for the new inode glock
- *
- * This can be called via the VFS filldir function when NFS is doing
- * a readdirplus and the inode which its intending to stat isn't
- * already in cache. In this case we must not take the directory glock
- * again, since the readdir call will have already taken that lock.
- *
- * Returns: errno
- */
-
-struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
-			   int is_root)
-{
-	struct super_block *sb = dir->i_sb;
-	struct gfs2_inode *dip = GFS2_I(dir);
-	struct gfs2_holder d_gh;
-	int error = 0;
-	struct inode *inode = NULL;
-	int unlock = 0;
-
-	if (!name->len || name->len > GFS2_FNAMESIZE)
-		return ERR_PTR(-ENAMETOOLONG);
-
-	if ((name->len == 1 && memcmp(name->name, ".", 1) == 0) ||
-	    (name->len == 2 && memcmp(name->name, "..", 2) == 0 &&
-	     dir == sb->s_root->d_inode)) {
-		igrab(dir);
-		return dir;
-	}
-
-	if (gfs2_glock_is_locked_by_me(dip->i_gl) == NULL) {
-		error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &d_gh);
-		if (error)
-			return ERR_PTR(error);
-		unlock = 1;
-	}
-
-	if (!is_root) {
-		error = gfs2_permission(dir, MAY_EXEC, 0);
-		if (error)
-			goto out;
-	}
-
-	inode = gfs2_dir_search(dir, name);
-	if (IS_ERR(inode))
-		error = PTR_ERR(inode);
-out:
-	if (unlock)
-		gfs2_glock_dq_uninit(&d_gh);
-	if (error == -ENOENT)
-		return NULL;
-	return inode ? inode : ERR_PTR(error);
-}
-
-/**
- * create_ok - OK to create a new on-disk inode here?
- * @dip:  Directory in which dinode is to be created
- * @name:  Name of new dinode
- * @mode:
- *
- * Returns: errno
- */
-
-static int create_ok(struct gfs2_inode *dip, const struct qstr *name,
-		     unsigned int mode)
-{
-	int error;
-
-	error = gfs2_permission(&dip->i_inode, MAY_WRITE | MAY_EXEC, 0);
-	if (error)
-		return error;
-
-	/*  Don't create entries in an unlinked directory  */
-	if (!dip->i_inode.i_nlink)
-		return -ENOENT;
-
-	error = gfs2_dir_check(&dip->i_inode, name, NULL);
-	switch (error) {
-	case -ENOENT:
-		error = 0;
-		break;
-	case 0:
-		return -EEXIST;
-	default:
-		return error;
-	}
-
-	if (dip->i_entries == (u32)-1)
-		return -EFBIG;
-	if (S_ISDIR(mode) && dip->i_inode.i_nlink == (u32)-1)
-		return -EMLINK;
-
-	return 0;
-}
-
-static void munge_mode_uid_gid(struct gfs2_inode *dip, unsigned int *mode,
-			       unsigned int *uid, unsigned int *gid)
-{
-	if (GFS2_SB(&dip->i_inode)->sd_args.ar_suiddir &&
-	    (dip->i_inode.i_mode & S_ISUID) && dip->i_inode.i_uid) {
-		if (S_ISDIR(*mode))
-			*mode |= S_ISUID;
-		else if (dip->i_inode.i_uid != current_fsuid())
-			*mode &= ~07111;
-		*uid = dip->i_inode.i_uid;
-	} else
-		*uid = current_fsuid();
-
-	if (dip->i_inode.i_mode & S_ISGID) {
-		if (S_ISDIR(*mode))
-			*mode |= S_ISGID;
-		*gid = dip->i_inode.i_gid;
-	} else
-		*gid = current_fsgid();
-}
-
-static int alloc_dinode(struct gfs2_inode *dip, u64 *no_addr, u64 *generation)
-{
-	struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
-	int error;
-
-	if (gfs2_alloc_get(dip) == NULL)
-		return -ENOMEM;
-
-	dip->i_alloc->al_requested = RES_DINODE;
-	error = gfs2_inplace_reserve(dip);
-	if (error)
-		goto out;
-
-	error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_STATFS, 0);
-	if (error)
-		goto out_ipreserv;
-
-	error = gfs2_alloc_di(dip, no_addr, generation);
-
-	gfs2_trans_end(sdp);
-
-out_ipreserv:
-	gfs2_inplace_release(dip);
-out:
-	gfs2_alloc_put(dip);
-	return error;
-}
-
-/**
- * init_dinode - Fill in a new dinode structure
- * @dip: the directory this inode is being created in
- * @gl: The glock covering the new inode
- * @inum: the inode number
- * @mode: the file permissions
- * @uid:
- * @gid:
- *
- */
-
-static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
-			const struct gfs2_inum_host *inum, unsigned int mode,
-			unsigned int uid, unsigned int gid,
-			const u64 *generation, dev_t dev, struct buffer_head **bhp)
-{
-	struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
-	struct gfs2_dinode *di;
-	struct buffer_head *dibh;
-	struct timespec tv = CURRENT_TIME;
-
-	dibh = gfs2_meta_new(gl, inum->no_addr);
-	gfs2_trans_add_bh(gl, dibh, 1);
-	gfs2_metatype_set(dibh, GFS2_METATYPE_DI, GFS2_FORMAT_DI);
-	gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode));
-	di = (struct gfs2_dinode *)dibh->b_data;
-
-	di->di_num.no_formal_ino = cpu_to_be64(inum->no_formal_ino);
-	di->di_num.no_addr = cpu_to_be64(inum->no_addr);
-	di->di_mode = cpu_to_be32(mode);
-	di->di_uid = cpu_to_be32(uid);
-	di->di_gid = cpu_to_be32(gid);
-	di->di_nlink = 0;
-	di->di_size = 0;
-	di->di_blocks = cpu_to_be64(1);
-	di->di_atime = di->di_mtime = di->di_ctime = cpu_to_be64(tv.tv_sec);
-	di->di_major = cpu_to_be32(MAJOR(dev));
-	di->di_minor = cpu_to_be32(MINOR(dev));
-	di->di_goal_meta = di->di_goal_data = cpu_to_be64(inum->no_addr);
-	di->di_generation = cpu_to_be64(*generation);
-	di->di_flags = 0;
-
-	if (S_ISREG(mode)) {
-		if ((dip->i_diskflags & GFS2_DIF_INHERIT_JDATA) ||
-		    gfs2_tune_get(sdp, gt_new_files_jdata))
-			di->di_flags |= cpu_to_be32(GFS2_DIF_JDATA);
-	} else if (S_ISDIR(mode)) {
-		di->di_flags |= cpu_to_be32(dip->i_diskflags &
-					    GFS2_DIF_INHERIT_JDATA);
-	}
-
-	di->__pad1 = 0;
-	di->di_payload_format = cpu_to_be32(S_ISDIR(mode) ? GFS2_FORMAT_DE : 0);
-	di->di_height = 0;
-	di->__pad2 = 0;
-	di->__pad3 = 0;
-	di->di_depth = 0;
-	di->di_entries = 0;
-	memset(&di->__pad4, 0, sizeof(di->__pad4));
-	di->di_eattr = 0;
-	di->di_atime_nsec = cpu_to_be32(tv.tv_nsec);
-	di->di_mtime_nsec = cpu_to_be32(tv.tv_nsec);
-	di->di_ctime_nsec = cpu_to_be32(tv.tv_nsec);
-	memset(&di->di_reserved, 0, sizeof(di->di_reserved));
-	
-	set_buffer_uptodate(dibh);
-
-	*bhp = dibh;
-}
-
-static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
-		       unsigned int mode, const struct gfs2_inum_host *inum,
-		       const u64 *generation, dev_t dev, struct buffer_head **bhp)
-{
-	struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
-	unsigned int uid, gid;
-	int error;
-
-	munge_mode_uid_gid(dip, &mode, &uid, &gid);
-	if (!gfs2_alloc_get(dip))
-		return -ENOMEM;
-
-	error = gfs2_quota_lock(dip, uid, gid);
-	if (error)
-		goto out;
-
-	error = gfs2_quota_check(dip, uid, gid);
-	if (error)
-		goto out_quota;
-
-	error = gfs2_trans_begin(sdp, RES_DINODE + RES_QUOTA, 0);
-	if (error)
-		goto out_quota;
-
-	init_dinode(dip, gl, inum, mode, uid, gid, generation, dev, bhp);
-	gfs2_quota_change(dip, +1, uid, gid);
-	gfs2_trans_end(sdp);
-
-out_quota:
-	gfs2_quota_unlock(dip);
-out:
-	gfs2_alloc_put(dip);
-	return error;
-}
-
-static int link_dinode(struct gfs2_inode *dip, const struct qstr *name,
-		       struct gfs2_inode *ip)
-{
-	struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
-	struct gfs2_alloc *al;
-	int alloc_required;
-	struct buffer_head *dibh;
-	int error;
-
-	al = gfs2_alloc_get(dip);
-	if (!al)
-		return -ENOMEM;
-
-	error = gfs2_quota_lock(dip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
-	if (error)
-		goto fail;
-
-	error = alloc_required = gfs2_diradd_alloc_required(&dip->i_inode, name);
-	if (alloc_required < 0)
-		goto fail_quota_locks;
-	if (alloc_required) {
-		error = gfs2_quota_check(dip, dip->i_inode.i_uid, dip->i_inode.i_gid);
-		if (error)
-			goto fail_quota_locks;
-
-		al->al_requested = sdp->sd_max_dirres;
-
-		error = gfs2_inplace_reserve(dip);
-		if (error)
-			goto fail_quota_locks;
-
-		error = gfs2_trans_begin(sdp, sdp->sd_max_dirres +
-					 al->al_rgd->rd_length +
-					 2 * RES_DINODE +
-					 RES_STATFS + RES_QUOTA, 0);
-		if (error)
-			goto fail_ipreserv;
-	} else {
-		error = gfs2_trans_begin(sdp, RES_LEAF + 2 * RES_DINODE, 0);
-		if (error)
-			goto fail_quota_locks;
-	}
-
-	error = gfs2_dir_add(&dip->i_inode, name, ip);
-	if (error)
-		goto fail_end_trans;
-
-	error = gfs2_meta_inode_buffer(ip, &dibh);
-	if (error)
-		goto fail_end_trans;
-	ip->i_inode.i_nlink = 1;
-	gfs2_trans_add_bh(ip->i_gl, dibh, 1);
-	gfs2_dinode_out(ip, dibh->b_data);
-	brelse(dibh);
-	return 0;
-
-fail_end_trans:
-	gfs2_trans_end(sdp);
-
-fail_ipreserv:
-	if (dip->i_alloc->al_rgd)
-		gfs2_inplace_release(dip);
-
-fail_quota_locks:
-	gfs2_quota_unlock(dip);
-
-fail:
-	gfs2_alloc_put(dip);
-	return error;
-}
-
-static int gfs2_security_init(struct gfs2_inode *dip, struct gfs2_inode *ip,
-			      const struct qstr *qstr)
-{
-	int err;
-	size_t len;
-	void *value;
-	char *name;
-
-	err = security_inode_init_security(&ip->i_inode, &dip->i_inode, qstr,
-					   &name, &value, &len);
-
-	if (err) {
-		if (err == -EOPNOTSUPP)
-			return 0;
-		return err;
-	}
-
-	err = __gfs2_xattr_set(&ip->i_inode, name, value, len, 0,
-			       GFS2_EATYPE_SECURITY);
-	kfree(value);
-	kfree(name);
-
-	return err;
-}
-
-/**
- * gfs2_createi - Create a new inode
- * @ghs: An array of two holders
- * @name: The name of the new file
- * @mode: the permissions on the new inode
- *
- * @ghs[0] is an initialized holder for the directory
- * @ghs[1] is the holder for the inode lock
- *
- * If the return value is not NULL, the glocks on both the directory and the new
- * file are held.  A transaction has been started and an inplace reservation
- * is held, as well.
- *
- * Returns: An inode
- */
-
-struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
-			   unsigned int mode, dev_t dev)
-{
-	struct inode *inode = NULL;
-	struct gfs2_inode *dip = ghs->gh_gl->gl_object;
-	struct inode *dir = &dip->i_inode;
-	struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
-	struct gfs2_inum_host inum = { .no_addr = 0, .no_formal_ino = 0 };
-	int error;
-	u64 generation;
-	struct buffer_head *bh = NULL;
-
-	if (!name->len || name->len > GFS2_FNAMESIZE)
-		return ERR_PTR(-ENAMETOOLONG);
-
-	gfs2_holder_reinit(LM_ST_EXCLUSIVE, 0, ghs);
-	error = gfs2_glock_nq(ghs);
-	if (error)
-		goto fail;
-
-	error = create_ok(dip, name, mode);
-	if (error)
-		goto fail_gunlock;
-
-	error = alloc_dinode(dip, &inum.no_addr, &generation);
-	if (error)
-		goto fail_gunlock;
-	inum.no_formal_ino = generation;
-
-	error = gfs2_glock_nq_num(sdp, inum.no_addr, &gfs2_inode_glops,
-				  LM_ST_EXCLUSIVE, GL_SKIP, ghs + 1);
-	if (error)
-		goto fail_gunlock;
-
-	error = make_dinode(dip, ghs[1].gh_gl, mode, &inum, &generation, dev, &bh);
-	if (error)
-		goto fail_gunlock2;
-
-	inode = gfs2_inode_lookup(dir->i_sb, IF2DT(mode), inum.no_addr,
-				  inum.no_formal_ino, 0);
-	if (IS_ERR(inode))
-		goto fail_gunlock2;
-
-	error = gfs2_inode_refresh(GFS2_I(inode));
-	if (error)
-		goto fail_gunlock2;
-
-	error = gfs2_acl_create(dip, inode);
-	if (error)
-		goto fail_gunlock2;
-
-	error = gfs2_security_init(dip, GFS2_I(inode), name);
-	if (error)
-		goto fail_gunlock2;
-
-	error = link_dinode(dip, name, GFS2_I(inode));
-	if (error)
-		goto fail_gunlock2;
-
-	if (bh)
-		brelse(bh);
-	return inode;
-
-fail_gunlock2:
-	gfs2_glock_dq_uninit(ghs + 1);
-	if (inode && !IS_ERR(inode))
-		iput(inode);
-fail_gunlock:
-	gfs2_glock_dq(ghs);
-fail:
-	if (bh)
-		brelse(bh);
-	return ERR_PTR(error);
-}
-/**
- * gfs2_create - Create a file
- * @dir: The directory in which to create the file
- * @dentry: The dentry of the new file
- * @mode: The mode of the new file
- *
- * Returns: errno
- */
-
-static int gfs2_create(struct inode *dir, struct dentry *dentry,
-		       int mode, struct nameidata *nd)
-{
-	struct gfs2_inode *dip = GFS2_I(dir);
-	struct gfs2_sbd *sdp = GFS2_SB(dir);
-	struct gfs2_holder ghs[2];
-	struct inode *inode;
-
-	gfs2_holder_init(dip->i_gl, 0, 0, ghs);
-
-	for (;;) {
-		inode = gfs2_createi(ghs, &dentry->d_name, S_IFREG | mode, 0);
-		if (!IS_ERR(inode)) {
-			gfs2_trans_end(sdp);
-			if (dip->i_alloc->al_rgd)
-				gfs2_inplace_release(dip);
-			gfs2_quota_unlock(dip);
-			gfs2_alloc_put(dip);
-			gfs2_glock_dq_uninit_m(2, ghs);
-			mark_inode_dirty(inode);
-			break;
-		} else if (PTR_ERR(inode) != -EEXIST ||
-			   (nd && nd->flags & LOOKUP_EXCL)) {
-			gfs2_holder_uninit(ghs);
-			return PTR_ERR(inode);
-		}
-
-		inode = gfs2_lookupi(dir, &dentry->d_name, 0);
-		if (inode) {
-			if (!IS_ERR(inode)) {
-				gfs2_holder_uninit(ghs);
-				break;
-			} else {
-				gfs2_holder_uninit(ghs);
-				return PTR_ERR(inode);
-			}
-		}
-	}
-
-	d_instantiate(dentry, inode);
-
-	return 0;
-}
-
-/**
- * gfs2_lookup - Look up a filename in a directory and return its inode
- * @dir: The directory inode
- * @dentry: The dentry of the new inode
- * @nd: passed from Linux VFS, ignored by us
- *
- * Called by the VFS layer. Lock dir and call gfs2_lookupi()
- *
- * Returns: errno
- */
-
-static struct dentry *gfs2_lookup(struct inode *dir, struct dentry *dentry,
-				  struct nameidata *nd)
-{
-	struct inode *inode = NULL;
-
-	inode = gfs2_lookupi(dir, &dentry->d_name, 0);
-	if (inode && IS_ERR(inode))
-		return ERR_CAST(inode);
-
-	if (inode) {
-		struct gfs2_glock *gl = GFS2_I(inode)->i_gl;
-		struct gfs2_holder gh;
-		int error;
-		error = gfs2_glock_nq_init(gl, LM_ST_SHARED, LM_FLAG_ANY, &gh);
-		if (error) {
-			iput(inode);
-			return ERR_PTR(error);
-		}
-		gfs2_glock_dq_uninit(&gh);
-		return d_splice_alias(inode, dentry);
-	}
-	d_add(dentry, inode);
-
-	return NULL;
-}
-
-/**
- * gfs2_link - Link to a file
- * @old_dentry: The inode to link
- * @dir: Add link to this directory
- * @dentry: The name of the link
- *
- * Link the inode in "old_dentry" into the directory "dir" with the
- * name in "dentry".
- *
- * Returns: errno
- */
-
-static int gfs2_link(struct dentry *old_dentry, struct inode *dir,
-		     struct dentry *dentry)
-{
-	struct gfs2_inode *dip = GFS2_I(dir);
-	struct gfs2_sbd *sdp = GFS2_SB(dir);
-	struct inode *inode = old_dentry->d_inode;
-	struct gfs2_inode *ip = GFS2_I(inode);
-	struct gfs2_holder ghs[2];
-	struct buffer_head *dibh;
-	int alloc_required;
-	int error;
-
-	if (S_ISDIR(inode->i_mode))
-		return -EPERM;
-
-	gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
-	gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
-
-	error = gfs2_glock_nq(ghs); /* parent */
-	if (error)
-		goto out_parent;
-
-	error = gfs2_glock_nq(ghs + 1); /* child */
-	if (error)
-		goto out_child;
-
-	error = -ENOENT;
-	if (inode->i_nlink == 0)
-		goto out_gunlock;
-
-	error = gfs2_permission(dir, MAY_WRITE | MAY_EXEC, 0);
-	if (error)
-		goto out_gunlock;
-
-	error = gfs2_dir_check(dir, &dentry->d_name, NULL);
-	switch (error) {
-	case -ENOENT:
-		break;
-	case 0:
-		error = -EEXIST;
-	default:
-		goto out_gunlock;
-	}
-
-	error = -EINVAL;
-	if (!dip->i_inode.i_nlink)
-		goto out_gunlock;
-	error = -EFBIG;
-	if (dip->i_entries == (u32)-1)
-		goto out_gunlock;
-	error = -EPERM;
-	if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
-		goto out_gunlock;
-	error = -EINVAL;
-	if (!ip->i_inode.i_nlink)
-		goto out_gunlock;
-	error = -EMLINK;
-	if (ip->i_inode.i_nlink == (u32)-1)
-		goto out_gunlock;
-
-	alloc_required = error = gfs2_diradd_alloc_required(dir, &dentry->d_name);
-	if (error < 0)
-		goto out_gunlock;
-	error = 0;
-
-	if (alloc_required) {
-		struct gfs2_alloc *al = gfs2_alloc_get(dip);
-		if (!al) {
-			error = -ENOMEM;
-			goto out_gunlock;
-		}
-
-		error = gfs2_quota_lock_check(dip);
-		if (error)
-			goto out_alloc;
-
-		al->al_requested = sdp->sd_max_dirres;
-
-		error = gfs2_inplace_reserve(dip);
-		if (error)
-			goto out_gunlock_q;
-
-		error = gfs2_trans_begin(sdp, sdp->sd_max_dirres +
-					 gfs2_rg_blocks(al) +
-					 2 * RES_DINODE + RES_STATFS +
-					 RES_QUOTA, 0);
-		if (error)
-			goto out_ipres;
-	} else {
-		error = gfs2_trans_begin(sdp, 2 * RES_DINODE + RES_LEAF, 0);
-		if (error)
-			goto out_ipres;
-	}
-
-	error = gfs2_meta_inode_buffer(ip, &dibh);
-	if (error)
-		goto out_end_trans;
-
-	error = gfs2_dir_add(dir, &dentry->d_name, ip);
-	if (error)
-		goto out_brelse;
-
-	gfs2_trans_add_bh(ip->i_gl, dibh, 1);
-	inc_nlink(&ip->i_inode);
-	ip->i_inode.i_ctime = CURRENT_TIME;
-	gfs2_dinode_out(ip, dibh->b_data);
-	mark_inode_dirty(&ip->i_inode);
-
-out_brelse:
-	brelse(dibh);
-out_end_trans:
-	gfs2_trans_end(sdp);
-out_ipres:
-	if (alloc_required)
-		gfs2_inplace_release(dip);
-out_gunlock_q:
-	if (alloc_required)
-		gfs2_quota_unlock(dip);
-out_alloc:
-	if (alloc_required)
-		gfs2_alloc_put(dip);
-out_gunlock:
-	gfs2_glock_dq(ghs + 1);
-out_child:
-	gfs2_glock_dq(ghs);
-out_parent:
-	gfs2_holder_uninit(ghs);
-	gfs2_holder_uninit(ghs + 1);
-	if (!error) {
-		ihold(inode);
-		d_instantiate(dentry, inode);
-		mark_inode_dirty(inode);
-	}
-	return error;
-}
-
-/*
- * gfs2_unlink_ok - check to see that a inode is still in a directory
- * @dip: the directory
- * @name: the name of the file
- * @ip: the inode
- *
- * Assumes that the lock on (at least) @dip is held.
- *
- * Returns: 0 if the parent/child relationship is correct, errno if it isn't
- */
-
-static int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name,
-			  const struct gfs2_inode *ip)
-{
-	int error;
-
-	if (IS_IMMUTABLE(&ip->i_inode) || IS_APPEND(&ip->i_inode))
-		return -EPERM;
-
-	if ((dip->i_inode.i_mode & S_ISVTX) &&
-	    dip->i_inode.i_uid != current_fsuid() &&
-	    ip->i_inode.i_uid != current_fsuid() && !capable(CAP_FOWNER))
-		return -EPERM;
-
-	if (IS_APPEND(&dip->i_inode))
-		return -EPERM;
-
-	error = gfs2_permission(&dip->i_inode, MAY_WRITE | MAY_EXEC, 0);
-	if (error)
-		return error;
-
-	error = gfs2_dir_check(&dip->i_inode, name, ip);
-	if (error)
-		return error;
-
-	return 0;
-}
-
-/**
- * gfs2_unlink_inode - Removes an inode from its parent dir and unlinks it
- * @dip: The parent directory
- * @name: The name of the entry in the parent directory
- * @bh: The inode buffer for the inode to be removed
- * @inode: The inode to be removed
- *
- * Called with all the locks and in a transaction. This will only be
- * called for a directory after it has been checked to ensure it is empty.
- *
- * Returns: 0 on success, or an error
- */
-
-static int gfs2_unlink_inode(struct gfs2_inode *dip,
-			     const struct dentry *dentry,
-			     struct buffer_head *bh)
-{
-	struct inode *inode = dentry->d_inode;
-	struct gfs2_inode *ip = GFS2_I(inode);
-	int error;
-
-	error = gfs2_dir_del(dip, dentry);
-	if (error)
-		return error;
-
-	ip->i_entries = 0;
-	inode->i_ctime = CURRENT_TIME;
-	if (S_ISDIR(inode->i_mode))
-		clear_nlink(inode);
-	else
-		drop_nlink(inode);
-	gfs2_trans_add_bh(ip->i_gl, bh, 1);
-	gfs2_dinode_out(ip, bh->b_data);
-	mark_inode_dirty(inode);
-	if (inode->i_nlink == 0)
-		gfs2_unlink_di(inode);
-	return 0;
-}
-
-
-/**
- * gfs2_unlink - Unlink an inode (this does rmdir as well)
- * @dir: The inode of the directory containing the inode to unlink
- * @dentry: The file itself
- *
- * This routine uses the type of the inode as a flag to figure out
- * whether this is an unlink or an rmdir.
- *
- * Returns: errno
- */
-
-static int gfs2_unlink(struct inode *dir, struct dentry *dentry)
-{
-	struct gfs2_inode *dip = GFS2_I(dir);
-	struct gfs2_sbd *sdp = GFS2_SB(dir);
-	struct inode *inode = dentry->d_inode;
-	struct gfs2_inode *ip = GFS2_I(inode);
-	struct buffer_head *bh;
-	struct gfs2_holder ghs[3];
-	struct gfs2_rgrpd *rgd;
-	struct gfs2_holder ri_gh;
-	int error;
-
-	error = gfs2_rindex_hold(sdp, &ri_gh);
-	if (error)
-		return error;
-
-	gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
-	gfs2_holder_init(ip->i_gl,  LM_ST_EXCLUSIVE, 0, ghs + 1);
-
-	rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr);
-	gfs2_holder_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + 2);
-
-
-	error = gfs2_glock_nq(ghs); /* parent */
-	if (error)
-		goto out_parent;
-
-	error = gfs2_glock_nq(ghs + 1); /* child */
-	if (error)
-		goto out_child;
-
-	error = -ENOENT;
-	if (inode->i_nlink == 0)
-		goto out_rgrp;
-
-	if (S_ISDIR(inode->i_mode)) {
-		error = -ENOTEMPTY;
-		if (ip->i_entries > 2 || inode->i_nlink > 2)
-			goto out_rgrp;
-	}
-
-	error = gfs2_glock_nq(ghs + 2); /* rgrp */
-	if (error)
-		goto out_rgrp;
-
-	error = gfs2_unlink_ok(dip, &dentry->d_name, ip);
-	if (error)
-		goto out_gunlock;
-
-	error = gfs2_trans_begin(sdp, 2*RES_DINODE + 3*RES_LEAF + RES_RG_BIT, 0);
-	if (error)
-		goto out_gunlock;
-
-	error = gfs2_meta_inode_buffer(ip, &bh);
-	if (error)
-		goto out_end_trans;
-
-	error = gfs2_unlink_inode(dip, dentry, bh);
-	brelse(bh);
-
-out_end_trans:
-	gfs2_trans_end(sdp);
-out_gunlock:
-	gfs2_glock_dq(ghs + 2);
-out_rgrp:
-	gfs2_holder_uninit(ghs + 2);
-	gfs2_glock_dq(ghs + 1);
-out_child:
-	gfs2_holder_uninit(ghs + 1);
-	gfs2_glock_dq(ghs);
-out_parent:
-	gfs2_holder_uninit(ghs);
-	gfs2_glock_dq_uninit(&ri_gh);
-	return error;
-}
-
-/**
- * gfs2_symlink - Create a symlink
- * @dir: The directory to create the symlink in
- * @dentry: The dentry to put the symlink in
- * @symname: The thing which the link points to
- *
- * Returns: errno
- */
-
-static int gfs2_symlink(struct inode *dir, struct dentry *dentry,
-			const char *symname)
-{
-	struct gfs2_inode *dip = GFS2_I(dir), *ip;
-	struct gfs2_sbd *sdp = GFS2_SB(dir);
-	struct gfs2_holder ghs[2];
-	struct inode *inode;
-	struct buffer_head *dibh;
-	int size;
-	int error;
-
-	/* Must be stuffed with a null terminator for gfs2_follow_link() */
-	size = strlen(symname);
-	if (size > sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode) - 1)
-		return -ENAMETOOLONG;
-
-	gfs2_holder_init(dip->i_gl, 0, 0, ghs);
-
-	inode = gfs2_createi(ghs, &dentry->d_name, S_IFLNK | S_IRWXUGO, 0);
-	if (IS_ERR(inode)) {
-		gfs2_holder_uninit(ghs);
-		return PTR_ERR(inode);
-	}
-
-	ip = ghs[1].gh_gl->gl_object;
-
-	i_size_write(inode, size);
-
-	error = gfs2_meta_inode_buffer(ip, &dibh);
-
-	if (!gfs2_assert_withdraw(sdp, !error)) {
-		gfs2_dinode_out(ip, dibh->b_data);
-		memcpy(dibh->b_data + sizeof(struct gfs2_dinode), symname,
-		       size);
-		brelse(dibh);
-	}
-
-	gfs2_trans_end(sdp);
-	if (dip->i_alloc->al_rgd)
-		gfs2_inplace_release(dip);
-	gfs2_quota_unlock(dip);
-	gfs2_alloc_put(dip);
-
-	gfs2_glock_dq_uninit_m(2, ghs);
-
-	d_instantiate(dentry, inode);
-	mark_inode_dirty(inode);
-
-	return 0;
-}
-
-/**
- * gfs2_mkdir - Make a directory
- * @dir: The parent directory of the new one
- * @dentry: The dentry of the new directory
- * @mode: The mode of the new directory
- *
- * Returns: errno
- */
-
-static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode)
-{
-	struct gfs2_inode *dip = GFS2_I(dir), *ip;
-	struct gfs2_sbd *sdp = GFS2_SB(dir);
-	struct gfs2_holder ghs[2];
-	struct inode *inode;
-	struct buffer_head *dibh;
-	int error;
-
-	gfs2_holder_init(dip->i_gl, 0, 0, ghs);
-
-	inode = gfs2_createi(ghs, &dentry->d_name, S_IFDIR | mode, 0);
-	if (IS_ERR(inode)) {
-		gfs2_holder_uninit(ghs);
-		return PTR_ERR(inode);
-	}
-
-	ip = ghs[1].gh_gl->gl_object;
-
-	ip->i_inode.i_nlink = 2;
-	i_size_write(inode, sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode));
-	ip->i_diskflags |= GFS2_DIF_JDATA;
-	ip->i_entries = 2;
-
-	error = gfs2_meta_inode_buffer(ip, &dibh);
-
-	if (!gfs2_assert_withdraw(sdp, !error)) {
-		struct gfs2_dinode *di = (struct gfs2_dinode *)dibh->b_data;
-		struct gfs2_dirent *dent = (struct gfs2_dirent *)(di+1);
-
-		gfs2_trans_add_bh(ip->i_gl, dibh, 1);
-		gfs2_qstr2dirent(&gfs2_qdot, GFS2_DIRENT_SIZE(gfs2_qdot.len), dent);
-		dent->de_inum = di->di_num; /* already GFS2 endian */
-		dent->de_type = cpu_to_be16(DT_DIR);
-		di->di_entries = cpu_to_be32(1);
-
-		dent = (struct gfs2_dirent *)((char*)dent + GFS2_DIRENT_SIZE(1));
-		gfs2_qstr2dirent(&gfs2_qdotdot, dibh->b_size - GFS2_DIRENT_SIZE(1) - sizeof(struct gfs2_dinode), dent);
-
-		gfs2_inum_out(dip, dent);
-		dent->de_type = cpu_to_be16(DT_DIR);
-
-		gfs2_dinode_out(ip, di);
-
-		brelse(dibh);
-	}
-
-	gfs2_trans_end(sdp);
-	if (dip->i_alloc->al_rgd)
-		gfs2_inplace_release(dip);
-	gfs2_quota_unlock(dip);
-	gfs2_alloc_put(dip);
-
-	gfs2_glock_dq_uninit_m(2, ghs);
-
-	d_instantiate(dentry, inode);
-	mark_inode_dirty(inode);
-
-	return 0;
-}
-
-/**
- * gfs2_mknod - Make a special file
- * @dir: The directory in which the special file will reside
- * @dentry: The dentry of the special file
- * @mode: The mode of the special file
- * @rdev: The device specification of the special file
- *
- */
-
-static int gfs2_mknod(struct inode *dir, struct dentry *dentry, int mode,
-		      dev_t dev)
-{
-	struct gfs2_inode *dip = GFS2_I(dir);
-	struct gfs2_sbd *sdp = GFS2_SB(dir);
-	struct gfs2_holder ghs[2];
-	struct inode *inode;
-
-	gfs2_holder_init(dip->i_gl, 0, 0, ghs);
-
-	inode = gfs2_createi(ghs, &dentry->d_name, mode, dev);
-	if (IS_ERR(inode)) {
-		gfs2_holder_uninit(ghs);
-		return PTR_ERR(inode);
-	}
-
-	gfs2_trans_end(sdp);
-	if (dip->i_alloc->al_rgd)
-		gfs2_inplace_release(dip);
-	gfs2_quota_unlock(dip);
-	gfs2_alloc_put(dip);
-
-	gfs2_glock_dq_uninit_m(2, ghs);
-
-	d_instantiate(dentry, inode);
-	mark_inode_dirty(inode);
-
-	return 0;
-}
-
-/*
- * gfs2_ok_to_move - check if it's ok to move a directory to another directory
- * @this: move this
- * @to: to here
- *
- * Follow @to back to the root and make sure we don't encounter @this
- * Assumes we already hold the rename lock.
- *
- * Returns: errno
- */
-
-static int gfs2_ok_to_move(struct gfs2_inode *this, struct gfs2_inode *to)
-{
-	struct inode *dir = &to->i_inode;
-	struct super_block *sb = dir->i_sb;
-	struct inode *tmp;
-	int error = 0;
-
-	igrab(dir);
-
-	for (;;) {
-		if (dir == &this->i_inode) {
-			error = -EINVAL;
-			break;
-		}
-		if (dir == sb->s_root->d_inode) {
-			error = 0;
-			break;
-		}
-
-		tmp = gfs2_lookupi(dir, &gfs2_qdotdot, 1);
-		if (IS_ERR(tmp)) {
-			error = PTR_ERR(tmp);
-			break;
-		}
-
-		iput(dir);
-		dir = tmp;
-	}
-
-	iput(dir);
-
-	return error;
-}
-
-/**
- * gfs2_rename - Rename a file
- * @odir: Parent directory of old file name
- * @odentry: The old dentry of the file
- * @ndir: Parent directory of new file name
- * @ndentry: The new dentry of the file
- *
- * Returns: errno
- */
-
-static int gfs2_rename(struct inode *odir, struct dentry *odentry,
-		       struct inode *ndir, struct dentry *ndentry)
-{
-	struct gfs2_inode *odip = GFS2_I(odir);
-	struct gfs2_inode *ndip = GFS2_I(ndir);
-	struct gfs2_inode *ip = GFS2_I(odentry->d_inode);
-	struct gfs2_inode *nip = NULL;
-	struct gfs2_sbd *sdp = GFS2_SB(odir);
-	struct gfs2_holder ghs[5], r_gh = { .gh_gl = NULL, }, ri_gh;
-	struct gfs2_rgrpd *nrgd;
-	unsigned int num_gh;
-	int dir_rename = 0;
-	int alloc_required = 0;
-	unsigned int x;
-	int error;
-
-	if (ndentry->d_inode) {
-		nip = GFS2_I(ndentry->d_inode);
-		if (ip == nip)
-			return 0;
-	}
-
-	error = gfs2_rindex_hold(sdp, &ri_gh);
-	if (error)
-		return error;
-
-	if (odip != ndip) {
-		error = gfs2_glock_nq_init(sdp->sd_rename_gl, LM_ST_EXCLUSIVE,
-					   0, &r_gh);
-		if (error)
-			goto out;
-
-		if (S_ISDIR(ip->i_inode.i_mode)) {
-			dir_rename = 1;
-			/* don't move a dirctory into it's subdir */
-			error = gfs2_ok_to_move(ip, ndip);
-			if (error)
-				goto out_gunlock_r;
-		}
-	}
-
-	num_gh = 1;
-	gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
-	if (odip != ndip) {
-		gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
-		num_gh++;
-	}
-	gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
-	num_gh++;
-
-	if (nip) {
-		gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
-		num_gh++;
-		/* grab the resource lock for unlink flag twiddling 
-		 * this is the case of the target file already existing
-		 * so we unlink before doing the rename
-		 */
-		nrgd = gfs2_blk2rgrpd(sdp, nip->i_no_addr);
-		if (nrgd)
-			gfs2_holder_init(nrgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh++);
-	}
-
-	for (x = 0; x < num_gh; x++) {
-		error = gfs2_glock_nq(ghs + x);
-		if (error)
-			goto out_gunlock;
-	}
-
-	error = -ENOENT;
-	if (ip->i_inode.i_nlink == 0)
-		goto out_gunlock;
-
-	/* Check out the old directory */
-
-	error = gfs2_unlink_ok(odip, &odentry->d_name, ip);
-	if (error)
-		goto out_gunlock;
-
-	/* Check out the new directory */
-
-	if (nip) {
-		error = gfs2_unlink_ok(ndip, &ndentry->d_name, nip);
-		if (error)
-			goto out_gunlock;
-
-		if (nip->i_inode.i_nlink == 0) {
-			error = -EAGAIN;
-			goto out_gunlock;
-		}
-
-		if (S_ISDIR(nip->i_inode.i_mode)) {
-			if (nip->i_entries < 2) {
-				gfs2_consist_inode(nip);
-				error = -EIO;
-				goto out_gunlock;
-			}
-			if (nip->i_entries > 2) {
-				error = -ENOTEMPTY;
-				goto out_gunlock;
-			}
-		}
-	} else {
-		error = gfs2_permission(ndir, MAY_WRITE | MAY_EXEC, 0);
-		if (error)
-			goto out_gunlock;
-
-		error = gfs2_dir_check(ndir, &ndentry->d_name, NULL);
-		switch (error) {
-		case -ENOENT:
-			error = 0;
-			break;
-		case 0:
-			error = -EEXIST;
-		default:
-			goto out_gunlock;
-		};
-
-		if (odip != ndip) {
-			if (!ndip->i_inode.i_nlink) {
-				error = -ENOENT;
-				goto out_gunlock;
-			}
-			if (ndip->i_entries == (u32)-1) {
-				error = -EFBIG;
-				goto out_gunlock;
-			}
-			if (S_ISDIR(ip->i_inode.i_mode) &&
-			    ndip->i_inode.i_nlink == (u32)-1) {
-				error = -EMLINK;
-				goto out_gunlock;
-			}
-		}
-	}
-
-	/* Check out the dir to be renamed */
-
-	if (dir_rename) {
-		error = gfs2_permission(odentry->d_inode, MAY_WRITE, 0);
-		if (error)
-			goto out_gunlock;
-	}
-
-	if (nip == NULL)
-		alloc_required = gfs2_diradd_alloc_required(ndir, &ndentry->d_name);
-	error = alloc_required;
-	if (error < 0)
-		goto out_gunlock;
-	error = 0;
-
-	if (alloc_required) {
-		struct gfs2_alloc *al = gfs2_alloc_get(ndip);
-		if (!al) {
-			error = -ENOMEM;
-			goto out_gunlock;
-		}
-
-		error = gfs2_quota_lock_check(ndip);
-		if (error)
-			goto out_alloc;
-
-		al->al_requested = sdp->sd_max_dirres;
-
-		error = gfs2_inplace_reserve_ri(ndip);
-		if (error)
-			goto out_gunlock_q;
-
-		error = gfs2_trans_begin(sdp, sdp->sd_max_dirres +
-					 gfs2_rg_blocks(al) +
-					 4 * RES_DINODE + 4 * RES_LEAF +
-					 RES_STATFS + RES_QUOTA + 4, 0);
-		if (error)
-			goto out_ipreserv;
-	} else {
-		error = gfs2_trans_begin(sdp, 4 * RES_DINODE +
-					 5 * RES_LEAF + 4, 0);
-		if (error)
-			goto out_gunlock;
-	}
-
-	/* Remove the target file, if it exists */
-
-	if (nip) {
-		struct buffer_head *bh;
-		error = gfs2_meta_inode_buffer(nip, &bh);
-		if (error)
-			goto out_end_trans;
-		error = gfs2_unlink_inode(ndip, ndentry, bh);
-		brelse(bh);
-	}
-
-	if (dir_rename) {
-		error = gfs2_dir_mvino(ip, &gfs2_qdotdot, ndip, DT_DIR);
-		if (error)
-			goto out_end_trans;
-	} else {
-		struct buffer_head *dibh;
-		error = gfs2_meta_inode_buffer(ip, &dibh);
-		if (error)
-			goto out_end_trans;
-		ip->i_inode.i_ctime = CURRENT_TIME;
-		gfs2_trans_add_bh(ip->i_gl, dibh, 1);
-		gfs2_dinode_out(ip, dibh->b_data);
-		brelse(dibh);
-	}
-
-	error = gfs2_dir_del(odip, odentry);
-	if (error)
-		goto out_end_trans;
-
-	error = gfs2_dir_add(ndir, &ndentry->d_name, ip);
-	if (error)
-		goto out_end_trans;
-
-out_end_trans:
-	gfs2_trans_end(sdp);
-out_ipreserv:
-	if (alloc_required)
-		gfs2_inplace_release(ndip);
-out_gunlock_q:
-	if (alloc_required)
-		gfs2_quota_unlock(ndip);
-out_alloc:
-	if (alloc_required)
-		gfs2_alloc_put(ndip);
-out_gunlock:
-	while (x--) {
-		gfs2_glock_dq(ghs + x);
-		gfs2_holder_uninit(ghs + x);
-	}
-out_gunlock_r:
-	if (r_gh.gh_gl)
-		gfs2_glock_dq_uninit(&r_gh);
-out:
-	gfs2_glock_dq_uninit(&ri_gh);
-	return error;
-}
-
-/**
- * gfs2_follow_link - Follow a symbolic link
- * @dentry: The dentry of the link
- * @nd: Data that we pass to vfs_follow_link()
- *
- * This can handle symlinks of any size.
- *
- * Returns: 0 on success or error code
- */
-
-static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd)
-{
-	struct gfs2_inode *ip = GFS2_I(dentry->d_inode);
-	struct gfs2_holder i_gh;
-	struct buffer_head *dibh;
-	unsigned int x, size;
-	char *buf;
-	int error;
-
-	gfs2_holder_init(ip->i_gl, LM_ST_SHARED, 0, &i_gh);
-	error = gfs2_glock_nq(&i_gh);
-	if (error) {
-		gfs2_holder_uninit(&i_gh);
-		nd_set_link(nd, ERR_PTR(error));
-		return NULL;
-	}
-
-	size = (unsigned int)i_size_read(&ip->i_inode);
-	if (size == 0) {
-		gfs2_consist_inode(ip);
-		buf = ERR_PTR(-EIO);
-		goto out;
-	}
-
-	error = gfs2_meta_inode_buffer(ip, &dibh);
-	if (error) {
-		buf = ERR_PTR(error);
-		goto out;
-	}
-
-	x = size + 1;
-	buf = kmalloc(x, GFP_NOFS);
-	if (!buf)
-		buf = ERR_PTR(-ENOMEM);
-	else
-		memcpy(buf, dibh->b_data + sizeof(struct gfs2_dinode), x);
-	brelse(dibh);
-out:
-	gfs2_glock_dq_uninit(&i_gh);
-	nd_set_link(nd, buf);
-	return NULL;
-}
-
-static void gfs2_put_link(struct dentry *dentry, struct nameidata *nd, void *p)
-{
-	char *s = nd_get_link(nd);
-	if (!IS_ERR(s))
-		kfree(s);
-}
-
-/**
- * gfs2_permission -
- * @inode: The inode
- * @mask: The mask to be tested
- * @flags: Indicates whether this is an RCU path walk or not
- *
- * This may be called from the VFS directly, or from within GFS2 with the
- * inode locked, so we look to see if the glock is already locked and only
- * lock the glock if its not already been done.
- *
- * Returns: errno
- */
-
-int gfs2_permission(struct inode *inode, int mask, unsigned int flags)
-{
-	struct gfs2_inode *ip;
-	struct gfs2_holder i_gh;
-	int error;
-	int unlock = 0;
-
-
-	ip = GFS2_I(inode);
-	if (gfs2_glock_is_locked_by_me(ip->i_gl) == NULL) {
-		if (flags & IPERM_FLAG_RCU)
-			return -ECHILD;
-		error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh);
-		if (error)
-			return error;
-		unlock = 1;
-	}
-
-	if ((mask & MAY_WRITE) && IS_IMMUTABLE(inode))
-		error = -EACCES;
-	else
-		error = generic_permission(inode, mask, flags, gfs2_check_acl);
-	if (unlock)
-		gfs2_glock_dq_uninit(&i_gh);
-
-	return error;
-}
-
-static int __gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr)
-{
-	struct inode *inode = &ip->i_inode;
-	struct buffer_head *dibh;
-	int error;
-
-	error = gfs2_meta_inode_buffer(ip, &dibh);
-	if (error)
-		return error;
-
-	setattr_copy(inode, attr);
-	mark_inode_dirty(inode);
-	gfs2_trans_add_bh(ip->i_gl, dibh, 1);
-	gfs2_dinode_out(ip, dibh->b_data);
-	brelse(dibh);
-	return 0;
-}
-
-/**
- * gfs2_setattr_simple -
- * @ip:
- * @attr:
- *
- * Returns: errno
- */
-
-int gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr)
-{
-	int error;
-
-	if (current->journal_info)
-		return __gfs2_setattr_simple(ip, attr);
-
-	error = gfs2_trans_begin(GFS2_SB(&ip->i_inode), RES_DINODE, 0);
-	if (error)
-		return error;
-
-	error = __gfs2_setattr_simple(ip, attr);
-	gfs2_trans_end(GFS2_SB(&ip->i_inode));
-	return error;
-}
-
-static int setattr_chown(struct inode *inode, struct iattr *attr)
-{
-	struct gfs2_inode *ip = GFS2_I(inode);
-	struct gfs2_sbd *sdp = GFS2_SB(inode);
-	u32 ouid, ogid, nuid, ngid;
-	int error;
-
-	ouid = inode->i_uid;
-	ogid = inode->i_gid;
-	nuid = attr->ia_uid;
-	ngid = attr->ia_gid;
-
-	if (!(attr->ia_valid & ATTR_UID) || ouid == nuid)
-		ouid = nuid = NO_QUOTA_CHANGE;
-	if (!(attr->ia_valid & ATTR_GID) || ogid == ngid)
-		ogid = ngid = NO_QUOTA_CHANGE;
-
-	if (!gfs2_alloc_get(ip))
-		return -ENOMEM;
-
-	error = gfs2_quota_lock(ip, nuid, ngid);
-	if (error)
-		goto out_alloc;
-
-	if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) {
-		error = gfs2_quota_check(ip, nuid, ngid);
-		if (error)
-			goto out_gunlock_q;
-	}
-
-	error = gfs2_trans_begin(sdp, RES_DINODE + 2 * RES_QUOTA, 0);
-	if (error)
-		goto out_gunlock_q;
-
-	error = gfs2_setattr_simple(ip, attr);
-	if (error)
-		goto out_end_trans;
-
-	if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) {
-		u64 blocks = gfs2_get_inode_blocks(&ip->i_inode);
-		gfs2_quota_change(ip, -blocks, ouid, ogid);
-		gfs2_quota_change(ip, blocks, nuid, ngid);
-	}
-
-out_end_trans:
-	gfs2_trans_end(sdp);
-out_gunlock_q:
-	gfs2_quota_unlock(ip);
-out_alloc:
-	gfs2_alloc_put(ip);
-	return error;
-}
-
-/**
- * gfs2_setattr - Change attributes on an inode
- * @dentry: The dentry which is changing
- * @attr: The structure describing the change
- *
- * The VFS layer wants to change one or more of an inodes attributes.  Write
- * that change out to disk.
- *
- * Returns: errno
- */
-
-static int gfs2_setattr(struct dentry *dentry, struct iattr *attr)
-{
-	struct inode *inode = dentry->d_inode;
-	struct gfs2_inode *ip = GFS2_I(inode);
-	struct gfs2_holder i_gh;
-	int error;
-
-	error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh);
-	if (error)
-		return error;
-
-	error = -EPERM;
-	if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
-		goto out;
-
-	error = inode_change_ok(inode, attr);
-	if (error)
-		goto out;
-
-	if (attr->ia_valid & ATTR_SIZE)
-		error = gfs2_setattr_size(inode, attr->ia_size);
-	else if (attr->ia_valid & (ATTR_UID | ATTR_GID))
-		error = setattr_chown(inode, attr);
-	else if ((attr->ia_valid & ATTR_MODE) && IS_POSIXACL(inode))
-		error = gfs2_acl_chmod(ip, attr);
-	else
-		error = gfs2_setattr_simple(ip, attr);
-
-out:
-	gfs2_glock_dq_uninit(&i_gh);
-	if (!error)
-		mark_inode_dirty(inode);
-	return error;
-}
-
-/**
- * gfs2_getattr - Read out an inode's attributes
- * @mnt: The vfsmount the inode is being accessed from
- * @dentry: The dentry to stat
- * @stat: The inode's stats
- *
- * This may be called from the VFS directly, or from within GFS2 with the
- * inode locked, so we look to see if the glock is already locked and only
- * lock the glock if its not already been done. Note that its the NFS
- * readdirplus operation which causes this to be called (from filldir)
- * with the glock already held.
- *
- * Returns: errno
- */
-
-static int gfs2_getattr(struct vfsmount *mnt, struct dentry *dentry,
-			struct kstat *stat)
-{
-	struct inode *inode = dentry->d_inode;
-	struct gfs2_inode *ip = GFS2_I(inode);
-	struct gfs2_holder gh;
-	int error;
-	int unlock = 0;
-
-	if (gfs2_glock_is_locked_by_me(ip->i_gl) == NULL) {
-		error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh);
-		if (error)
-			return error;
-		unlock = 1;
-	}
-
-	generic_fillattr(inode, stat);
-	if (unlock)
-		gfs2_glock_dq_uninit(&gh);
-
-	return 0;
-}
-
-static int gfs2_setxattr(struct dentry *dentry, const char *name,
-			 const void *data, size_t size, int flags)
-{
-	struct inode *inode = dentry->d_inode;
-	struct gfs2_inode *ip = GFS2_I(inode);
-	struct gfs2_holder gh;
-	int ret;
-
-	gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);
-	ret = gfs2_glock_nq(&gh);
-	if (ret == 0) {
-		ret = generic_setxattr(dentry, name, data, size, flags);
-		gfs2_glock_dq(&gh);
-	}
-	gfs2_holder_uninit(&gh);
-	return ret;
-}
-
-static ssize_t gfs2_getxattr(struct dentry *dentry, const char *name,
-			     void *data, size_t size)
-{
-	struct inode *inode = dentry->d_inode;
-	struct gfs2_inode *ip = GFS2_I(inode);
-	struct gfs2_holder gh;
-	int ret;
-
-	gfs2_holder_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh);
-	ret = gfs2_glock_nq(&gh);
-	if (ret == 0) {
-		ret = generic_getxattr(dentry, name, data, size);
-		gfs2_glock_dq(&gh);
-	}
-	gfs2_holder_uninit(&gh);
-	return ret;
-}
-
-static int gfs2_removexattr(struct dentry *dentry, const char *name)
-{
-	struct inode *inode = dentry->d_inode;
-	struct gfs2_inode *ip = GFS2_I(inode);
-	struct gfs2_holder gh;
-	int ret;
-
-	gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);
-	ret = gfs2_glock_nq(&gh);
-	if (ret == 0) {
-		ret = generic_removexattr(dentry, name);
-		gfs2_glock_dq(&gh);
-	}
-	gfs2_holder_uninit(&gh);
-	return ret;
-}
-
-static int gfs2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
-		       u64 start, u64 len)
-{
-	struct gfs2_inode *ip = GFS2_I(inode);
-	struct gfs2_holder gh;
-	int ret;
-
-	ret = fiemap_check_flags(fieinfo, FIEMAP_FLAG_SYNC);
-	if (ret)
-		return ret;
-
-	mutex_lock(&inode->i_mutex);
-
-	ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &gh);
-	if (ret)
-		goto out;
-
-	if (gfs2_is_stuffed(ip)) {
-		u64 phys = ip->i_no_addr << inode->i_blkbits;
-		u64 size = i_size_read(inode);
-		u32 flags = FIEMAP_EXTENT_LAST|FIEMAP_EXTENT_NOT_ALIGNED|
-			    FIEMAP_EXTENT_DATA_INLINE;
-		phys += sizeof(struct gfs2_dinode);
-		phys += start;
-		if (start + len > size)
-			len = size - start;
-		if (start < size)
-			ret = fiemap_fill_next_extent(fieinfo, start, phys,
-						      len, flags);
-		if (ret == 1)
-			ret = 0;
-	} else {
-		ret = __generic_block_fiemap(inode, fieinfo, start, len,
-					     gfs2_block_map);
-	}
-
-	gfs2_glock_dq_uninit(&gh);
-out:
-	mutex_unlock(&inode->i_mutex);
-	return ret;
-}
-
-const struct inode_operations gfs2_file_iops = {
-	.permission = gfs2_permission,
-	.setattr = gfs2_setattr,
-	.getattr = gfs2_getattr,
-	.setxattr = gfs2_setxattr,
-	.getxattr = gfs2_getxattr,
-	.listxattr = gfs2_listxattr,
-	.removexattr = gfs2_removexattr,
-	.fiemap = gfs2_fiemap,
-};
-
-const struct inode_operations gfs2_dir_iops = {
-	.create = gfs2_create,
-	.lookup = gfs2_lookup,
-	.link = gfs2_link,
-	.unlink = gfs2_unlink,
-	.symlink = gfs2_symlink,
-	.mkdir = gfs2_mkdir,
-	.rmdir = gfs2_unlink,
-	.mknod = gfs2_mknod,
-	.rename = gfs2_rename,
-	.permission = gfs2_permission,
-	.setattr = gfs2_setattr,
-	.getattr = gfs2_getattr,
-	.setxattr = gfs2_setxattr,
-	.getxattr = gfs2_getxattr,
-	.listxattr = gfs2_listxattr,
-	.removexattr = gfs2_removexattr,
-	.fiemap = gfs2_fiemap,
-};
-
-const struct inode_operations gfs2_symlink_iops = {
-	.readlink = generic_readlink,
-	.follow_link = gfs2_follow_link,
-	.put_link = gfs2_put_link,
-	.permission = gfs2_permission,
-	.setattr = gfs2_setattr,
-	.getattr = gfs2_getattr,
-	.setxattr = gfs2_setxattr,
-	.getxattr = gfs2_getxattr,
-	.listxattr = gfs2_listxattr,
-	.removexattr = gfs2_removexattr,
-	.fiemap = gfs2_fiemap,
-};
-