Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1728 insertions, 0 deletions

diff --git a/fs/reiserfs/namei.c b/fs/reiserfs/namei.c
new file mode 100644
index 0000000000..9c5704be24
--- /dev/null
+++ b/fs/reiserfs/namei.c
@@ -0,0 +1,1728 @@
+/*
+ * Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README
+ *
+ * Trivial changes by Alan Cox to remove EHASHCOLLISION for compatibility
+ *
+ * Trivial Changes:
+ * Rights granted to Hans Reiser to redistribute under other terms providing
+ * he accepts all liability including but not limited to patent, fitness
+ * for purpose, and direct or indirect claims arising from failure to perform.
+ *
+ * NO WARRANTY
+ */
+
+#include <linux/time.h>
+#include <linux/bitops.h>
+#include <linux/slab.h>
+#include "reiserfs.h"
+#include "acl.h"
+#include "xattr.h"
+#include <linux/quotaops.h>
+
+#define INC_DIR_INODE_NLINK(i) if (i->i_nlink != 1) { inc_nlink(i); if (i->i_nlink >= REISERFS_LINK_MAX) set_nlink(i, 1); }
+#define DEC_DIR_INODE_NLINK(i) if (i->i_nlink != 1) drop_nlink(i);
+
+/*
+ * directory item contains array of entry headers. This performs
+ * binary search through that array
+ */
+static int bin_search_in_dir_item(struct reiserfs_dir_entry *de, loff_t off)
+{
+	struct item_head *ih = de->de_ih;
+	struct reiserfs_de_head *deh = de->de_deh;
+	int rbound, lbound, j;
+
+	lbound = 0;
+	rbound = ih_entry_count(ih) - 1;
+
+	for (j = (rbound + lbound) / 2; lbound <= rbound;
+	     j = (rbound + lbound) / 2) {
+		if (off < deh_offset(deh + j)) {
+			rbound = j - 1;
+			continue;
+		}
+		if (off > deh_offset(deh + j)) {
+			lbound = j + 1;
+			continue;
+		}
+		/* this is not name found, but matched third key component */
+		de->de_entry_num = j;
+		return NAME_FOUND;
+	}
+
+	de->de_entry_num = lbound;
+	return NAME_NOT_FOUND;
+}
+
+/*
+ * comment?  maybe something like set de to point to what the path points to?
+ */
+static inline void set_de_item_location(struct reiserfs_dir_entry *de,
+					struct treepath *path)
+{
+	de->de_bh = get_last_bh(path);
+	de->de_ih = tp_item_head(path);
+	de->de_deh = B_I_DEH(de->de_bh, de->de_ih);
+	de->de_item_num = PATH_LAST_POSITION(path);
+}
+
+/*
+ * de_bh, de_ih, de_deh (points to first element of array), de_item_num is set
+ */
+inline void set_de_name_and_namelen(struct reiserfs_dir_entry *de)
+{
+	struct reiserfs_de_head *deh = de->de_deh + de->de_entry_num;
+
+	BUG_ON(de->de_entry_num >= ih_entry_count(de->de_ih));
+
+	de->de_entrylen = entry_length(de->de_bh, de->de_ih, de->de_entry_num);
+	de->de_namelen = de->de_entrylen - (de_with_sd(deh) ? SD_SIZE : 0);
+	de->de_name = ih_item_body(de->de_bh, de->de_ih) + deh_location(deh);
+	if (de->de_name[de->de_namelen - 1] == 0)
+		de->de_namelen = strlen(de->de_name);
+}
+
+/* what entry points to */
+static inline void set_de_object_key(struct reiserfs_dir_entry *de)
+{
+	BUG_ON(de->de_entry_num >= ih_entry_count(de->de_ih));
+	de->de_dir_id = deh_dir_id(&de->de_deh[de->de_entry_num]);
+	de->de_objectid = deh_objectid(&de->de_deh[de->de_entry_num]);
+}
+
+static inline void store_de_entry_key(struct reiserfs_dir_entry *de)
+{
+	struct reiserfs_de_head *deh = de->de_deh + de->de_entry_num;
+
+	BUG_ON(de->de_entry_num >= ih_entry_count(de->de_ih));
+
+	/* store key of the found entry */
+	de->de_entry_key.version = KEY_FORMAT_3_5;
+	de->de_entry_key.on_disk_key.k_dir_id =
+	    le32_to_cpu(de->de_ih->ih_key.k_dir_id);
+	de->de_entry_key.on_disk_key.k_objectid =
+	    le32_to_cpu(de->de_ih->ih_key.k_objectid);
+	set_cpu_key_k_offset(&de->de_entry_key, deh_offset(deh));
+	set_cpu_key_k_type(&de->de_entry_key, TYPE_DIRENTRY);
+}
+
+/*
+ * We assign a key to each directory item, and place multiple entries in a
+ * single directory item.  A directory item has a key equal to the key of
+ * the first directory entry in it.
+
+ * This function first calls search_by_key, then, if item whose first entry
+ * matches is not found it looks for the entry inside directory item found
+ * by search_by_key. Fills the path to the entry, and to the entry position
+ * in the item
+ */
+/* The function is NOT SCHEDULE-SAFE! */
+int search_by_entry_key(struct super_block *sb, const struct cpu_key *key,
+			struct treepath *path, struct reiserfs_dir_entry *de)
+{
+	int retval;
+
+	retval = search_item(sb, key, path);
+	switch (retval) {
+	case ITEM_NOT_FOUND:
+		if (!PATH_LAST_POSITION(path)) {
+			reiserfs_error(sb, "vs-7000", "search_by_key "
+				       "returned item position == 0");
+			pathrelse(path);
+			return IO_ERROR;
+		}
+		PATH_LAST_POSITION(path)--;
+		break;
+
+	case ITEM_FOUND:
+		break;
+
+	case IO_ERROR:
+		return retval;
+
+	default:
+		pathrelse(path);
+		reiserfs_error(sb, "vs-7002", "no path to here");
+		return IO_ERROR;
+	}
+
+	set_de_item_location(de, path);
+
+#ifdef CONFIG_REISERFS_CHECK
+	if (!is_direntry_le_ih(de->de_ih) ||
+	    COMP_SHORT_KEYS(&de->de_ih->ih_key, key)) {
+		print_block(de->de_bh, 0, -1, -1);
+		reiserfs_panic(sb, "vs-7005", "found item %h is not directory "
+			       "item or does not belong to the same directory "
+			       "as key %K", de->de_ih, key);
+	}
+#endif				/* CONFIG_REISERFS_CHECK */
+
+	/*
+	 * binary search in directory item by third component of the
+	 * key. sets de->de_entry_num of de
+	 */
+	retval = bin_search_in_dir_item(de, cpu_key_k_offset(key));
+	path->pos_in_item = de->de_entry_num;
+	if (retval != NAME_NOT_FOUND) {
+		/*
+		 * ugly, but rename needs de_bh, de_deh, de_name,
+		 * de_namelen, de_objectid set
+		 */
+		set_de_name_and_namelen(de);
+		set_de_object_key(de);
+	}
+	return retval;
+}
+
+/* Keyed 32-bit hash function using TEA in a Davis-Meyer function */
+
+/*
+ * The third component is hashed, and you can choose from more than
+ * one hash function.  Per directory hashes are not yet implemented
+ * but are thought about. This function should be moved to hashes.c
+ * Jedi, please do so.  -Hans
+ */
+static __u32 get_third_component(struct super_block *s,
+				 const char *name, int len)
+{
+	__u32 res;
+
+	if (!len || (len == 1 && name[0] == '.'))
+		return DOT_OFFSET;
+	if (len == 2 && name[0] == '.' && name[1] == '.')
+		return DOT_DOT_OFFSET;
+
+	res = REISERFS_SB(s)->s_hash_function(name, len);
+
+	/* take bits from 7-th to 30-th including both bounds */
+	res = GET_HASH_VALUE(res);
+	if (res == 0)
+		/*
+		 * needed to have no names before "." and ".." those have hash
+		 * value == 0 and generation conters 1 and 2 accordingly
+		 */
+		res = 128;
+	return res + MAX_GENERATION_NUMBER;
+}
+
+static int reiserfs_match(struct reiserfs_dir_entry *de,
+			  const char *name, int namelen)
+{
+	int retval = NAME_NOT_FOUND;
+
+	if ((namelen == de->de_namelen) &&
+	    !memcmp(de->de_name, name, de->de_namelen))
+		retval =
+		    (de_visible(de->de_deh + de->de_entry_num) ? NAME_FOUND :
+		     NAME_FOUND_INVISIBLE);
+
+	return retval;
+}
+
+/* de's de_bh, de_ih, de_deh, de_item_num, de_entry_num are set already */
+
+/* used when hash collisions exist */
+
+static int linear_search_in_dir_item(struct cpu_key *key,
+				     struct reiserfs_dir_entry *de,
+				     const char *name, int namelen)
+{
+	struct reiserfs_de_head *deh = de->de_deh;
+	int retval;
+	int i;
+
+	i = de->de_entry_num;
+
+	if (i == ih_entry_count(de->de_ih) ||
+	    GET_HASH_VALUE(deh_offset(deh + i)) !=
+	    GET_HASH_VALUE(cpu_key_k_offset(key))) {
+		i--;
+	}
+
+	RFALSE(de->de_deh != B_I_DEH(de->de_bh, de->de_ih),
+	       "vs-7010: array of entry headers not found");
+
+	deh += i;
+
+	for (; i >= 0; i--, deh--) {
+		/* hash value does not match, no need to check whole name */
+		if (GET_HASH_VALUE(deh_offset(deh)) !=
+		    GET_HASH_VALUE(cpu_key_k_offset(key))) {
+			return NAME_NOT_FOUND;
+		}
+
+		/* mark that this generation number is used */
+		if (de->de_gen_number_bit_string)
+			set_bit(GET_GENERATION_NUMBER(deh_offset(deh)),
+				de->de_gen_number_bit_string);
+
+		/* calculate pointer to name and namelen */
+		de->de_entry_num = i;
+		set_de_name_and_namelen(de);
+
+		/*
+		 * de's de_name, de_namelen, de_recordlen are set.
+		 * Fill the rest.
+		 */
+		if ((retval =
+		     reiserfs_match(de, name, namelen)) != NAME_NOT_FOUND) {
+
+			/* key of pointed object */
+			set_de_object_key(de);
+
+			store_de_entry_key(de);
+
+			/* retval can be NAME_FOUND or NAME_FOUND_INVISIBLE */
+			return retval;
+		}
+	}
+
+	if (GET_GENERATION_NUMBER(le_ih_k_offset(de->de_ih)) == 0)
+		/*
+		 * we have reached left most entry in the node. In common we
+		 * have to go to the left neighbor, but if generation counter
+		 * is 0 already, we know for sure, that there is no name with
+		 * the same hash value
+		 */
+		/*
+		 * FIXME: this work correctly only because hash value can not
+		 *  be 0. Btw, in case of Yura's hash it is probably possible,
+		 * so, this is a bug
+		 */
+		return NAME_NOT_FOUND;
+
+	RFALSE(de->de_item_num,
+	       "vs-7015: two diritems of the same directory in one node?");
+
+	return GOTO_PREVIOUS_ITEM;
+}
+
+/*
+ * may return NAME_FOUND, NAME_FOUND_INVISIBLE, NAME_NOT_FOUND
+ * FIXME: should add something like IOERROR
+ */
+static int reiserfs_find_entry(struct inode *dir, const char *name, int namelen,
+			       struct treepath *path_to_entry,
+			       struct reiserfs_dir_entry *de)
+{
+	struct cpu_key key_to_search;
+	int retval;
+
+	if (namelen > REISERFS_MAX_NAME(dir->i_sb->s_blocksize))
+		return NAME_NOT_FOUND;
+
+	/* we will search for this key in the tree */
+	make_cpu_key(&key_to_search, dir,
+		     get_third_component(dir->i_sb, name, namelen),
+		     TYPE_DIRENTRY, 3);
+
+	while (1) {
+		retval =
+		    search_by_entry_key(dir->i_sb, &key_to_search,
+					path_to_entry, de);
+		if (retval == IO_ERROR) {
+			reiserfs_error(dir->i_sb, "zam-7001", "io error");
+			return IO_ERROR;
+		}
+
+		/* compare names for all entries having given hash value */
+		retval =
+		    linear_search_in_dir_item(&key_to_search, de, name,
+					      namelen);
+		/*
+		 * there is no need to scan directory anymore.
+		 * Given entry found or does not exist
+		 */
+		if (retval != GOTO_PREVIOUS_ITEM) {
+			path_to_entry->pos_in_item = de->de_entry_num;
+			return retval;
+		}
+
+		/*
+		 * there is left neighboring item of this directory
+		 * and given entry can be there
+		 */
+		set_cpu_key_k_offset(&key_to_search,
+				     le_ih_k_offset(de->de_ih) - 1);
+		pathrelse(path_to_entry);
+
+	}			/* while (1) */
+}
+
+static struct dentry *reiserfs_lookup(struct inode *dir, struct dentry *dentry,
+				      unsigned int flags)
+{
+	int retval;
+	struct inode *inode = NULL;
+	struct reiserfs_dir_entry de;
+	INITIALIZE_PATH(path_to_entry);
+
+	if (REISERFS_MAX_NAME(dir->i_sb->s_blocksize) < dentry->d_name.len)
+		return ERR_PTR(-ENAMETOOLONG);
+
+	reiserfs_write_lock(dir->i_sb);
+
+	de.de_gen_number_bit_string = NULL;
+	retval =
+	    reiserfs_find_entry(dir, dentry->d_name.name, dentry->d_name.len,
+				&path_to_entry, &de);
+	pathrelse(&path_to_entry);
+	if (retval == NAME_FOUND) {
+		inode = reiserfs_iget(dir->i_sb,
+				      (struct cpu_key *)&de.de_dir_id);
+		if (!inode || IS_ERR(inode)) {
+			reiserfs_write_unlock(dir->i_sb);
+			return ERR_PTR(-EACCES);
+		}
+
+		/*
+		 * Propagate the private flag so we know we're
+		 * in the priv tree.  Also clear xattr support
+		 * since we don't have xattrs on xattr files.
+		 */
+		if (IS_PRIVATE(dir))
+			reiserfs_init_priv_inode(inode);
+	}
+	reiserfs_write_unlock(dir->i_sb);
+	if (retval == IO_ERROR) {
+		return ERR_PTR(-EIO);
+	}
+
+	return d_splice_alias(inode, dentry);
+}
+
+/*
+ * looks up the dentry of the parent directory for child.
+ * taken from ext2_get_parent
+ */
+struct dentry *reiserfs_get_parent(struct dentry *child)
+{
+	int retval;
+	struct inode *inode = NULL;
+	struct reiserfs_dir_entry de;
+	INITIALIZE_PATH(path_to_entry);
+	struct inode *dir = d_inode(child);
+
+	if (dir->i_nlink == 0) {
+		return ERR_PTR(-ENOENT);
+	}
+	de.de_gen_number_bit_string = NULL;
+
+	reiserfs_write_lock(dir->i_sb);
+	retval = reiserfs_find_entry(dir, "..", 2, &path_to_entry, &de);
+	pathrelse(&path_to_entry);
+	if (retval != NAME_FOUND) {
+		reiserfs_write_unlock(dir->i_sb);
+		return ERR_PTR(-ENOENT);
+	}
+	inode = reiserfs_iget(dir->i_sb, (struct cpu_key *)&de.de_dir_id);
+	reiserfs_write_unlock(dir->i_sb);
+
+	return d_obtain_alias(inode);
+}
+
+/* add entry to the directory (entry can be hidden).
+
+insert definition of when hidden directories are used here -Hans
+
+ Does not mark dir   inode dirty, do it after successesfull call to it */
+
+static int reiserfs_add_entry(struct reiserfs_transaction_handle *th,
+			      struct inode *dir, const char *name, int namelen,
+			      struct inode *inode, int visible)
+{
+	struct cpu_key entry_key;
+	struct reiserfs_de_head *deh;
+	INITIALIZE_PATH(path);
+	struct reiserfs_dir_entry de;
+	DECLARE_BITMAP(bit_string, MAX_GENERATION_NUMBER + 1);
+	int gen_number;
+
+	/*
+	 * 48 bytes now and we avoid kmalloc if we
+	 * create file with short name
+	 */
+	char small_buf[32 + DEH_SIZE];
+
+	char *buffer;
+	int buflen, paste_size;
+	int retval;
+
+	BUG_ON(!th->t_trans_id);
+
+	/* cannot allow items to be added into a busy deleted directory */
+	if (!namelen)
+		return -EINVAL;
+
+	if (namelen > REISERFS_MAX_NAME(dir->i_sb->s_blocksize))
+		return -ENAMETOOLONG;
+
+	/* each entry has unique key. compose it */
+	make_cpu_key(&entry_key, dir,
+		     get_third_component(dir->i_sb, name, namelen),
+		     TYPE_DIRENTRY, 3);
+
+	/* get memory for composing the entry */
+	buflen = DEH_SIZE + ROUND_UP(namelen);
+	if (buflen > sizeof(small_buf)) {
+		buffer = kmalloc(buflen, GFP_NOFS);
+		if (!buffer)
+			return -ENOMEM;
+	} else
+		buffer = small_buf;
+
+	paste_size =
+	    (get_inode_sd_version(dir) ==
+	     STAT_DATA_V1) ? (DEH_SIZE + namelen) : buflen;
+
+	/*
+	 * fill buffer : directory entry head, name[, dir objectid | ,
+	 * stat data | ,stat data, dir objectid ]
+	 */
+	deh = (struct reiserfs_de_head *)buffer;
+	deh->deh_location = 0;	/* JDM Endian safe if 0 */
+	put_deh_offset(deh, cpu_key_k_offset(&entry_key));
+	deh->deh_state = 0;	/* JDM Endian safe if 0 */
+	/* put key (ino analog) to de */
+
+	/* safe: k_dir_id is le */
+	deh->deh_dir_id = INODE_PKEY(inode)->k_dir_id;
+	/* safe: k_objectid is le */
+	deh->deh_objectid = INODE_PKEY(inode)->k_objectid;
+
+	/* copy name */
+	memcpy((char *)(deh + 1), name, namelen);
+	/* padd by 0s to the 4 byte boundary */
+	padd_item((char *)(deh + 1), ROUND_UP(namelen), namelen);
+
+	/*
+	 * entry is ready to be pasted into tree, set 'visibility'
+	 * and 'stat data in entry' attributes
+	 */
+	mark_de_without_sd(deh);
+	visible ? mark_de_visible(deh) : mark_de_hidden(deh);
+
+	/* find the proper place for the new entry */
+	memset(bit_string, 0, sizeof(bit_string));
+	de.de_gen_number_bit_string = bit_string;
+	retval = reiserfs_find_entry(dir, name, namelen, &path, &de);
+	if (retval != NAME_NOT_FOUND) {
+		if (buffer != small_buf)
+			kfree(buffer);
+		pathrelse(&path);
+
+		if (retval == IO_ERROR) {
+			return -EIO;
+		}
+
+		if (retval != NAME_FOUND) {
+			reiserfs_error(dir->i_sb, "zam-7002",
+				       "reiserfs_find_entry() returned "
+				       "unexpected value (%d)", retval);
+		}
+
+		return -EEXIST;
+	}
+
+	gen_number =
+	    find_first_zero_bit(bit_string,
+				MAX_GENERATION_NUMBER + 1);
+	if (gen_number > MAX_GENERATION_NUMBER) {
+		/* there is no free generation number */
+		reiserfs_warning(dir->i_sb, "reiserfs-7010",
+				 "Congratulations! we have got hash function "
+				 "screwed up");
+		if (buffer != small_buf)
+			kfree(buffer);
+		pathrelse(&path);
+		return -EBUSY;
+	}
+	/* adjust offset of directory enrty */
+	put_deh_offset(deh, SET_GENERATION_NUMBER(deh_offset(deh), gen_number));
+	set_cpu_key_k_offset(&entry_key, deh_offset(deh));
+
+	/* update max-hash-collisions counter in reiserfs_sb_info */
+	PROC_INFO_MAX(th->t_super, max_hash_collisions, gen_number);
+
+	/* we need to re-search for the insertion point */
+	if (gen_number != 0) {
+		if (search_by_entry_key(dir->i_sb, &entry_key, &path, &de) !=
+		    NAME_NOT_FOUND) {
+			reiserfs_warning(dir->i_sb, "vs-7032",
+					 "entry with this key (%K) already "
+					 "exists", &entry_key);
+
+			if (buffer != small_buf)
+				kfree(buffer);
+			pathrelse(&path);
+			return -EBUSY;
+		}
+	}
+
+	/* perform the insertion of the entry that we have prepared */
+	retval =
+	    reiserfs_paste_into_item(th, &path, &entry_key, dir, buffer,
+				     paste_size);
+	if (buffer != small_buf)
+		kfree(buffer);
+	if (retval) {
+		reiserfs_check_path(&path);
+		return retval;
+	}
+
+	dir->i_size += paste_size;
+	dir->i_mtime = inode_set_ctime_current(dir);
+	if (!S_ISDIR(inode->i_mode) && visible)
+		/* reiserfs_mkdir or reiserfs_rename will do that by itself */
+		reiserfs_update_sd(th, dir);
+
+	reiserfs_check_path(&path);
+	return 0;
+}
+
+/*
+ * quota utility function, call if you've had to abort after calling
+ * new_inode_init, and have not called reiserfs_new_inode yet.
+ * This should only be called on inodes that do not have stat data
+ * inserted into the tree yet.
+ */
+static int drop_new_inode(struct inode *inode)
+{
+	dquot_drop(inode);
+	make_bad_inode(inode);
+	inode->i_flags |= S_NOQUOTA;
+	iput(inode);
+	return 0;
+}
+
+/*
+ * utility function that does setup for reiserfs_new_inode.
+ * dquot_initialize needs lots of credits so it's better to have it
+ * outside of a transaction, so we had to pull some bits of
+ * reiserfs_new_inode out into this func.
+ */
+static int new_inode_init(struct inode *inode, struct inode *dir, umode_t mode)
+{
+	/*
+	 * Make inode invalid - just in case we are going to drop it before
+	 * the initialization happens
+	 */
+	INODE_PKEY(inode)->k_objectid = 0;
+
+	/*
+	 * the quota init calls have to know who to charge the quota to, so
+	 * we have to set uid and gid here
+	 */
+	inode_init_owner(&nop_mnt_idmap, inode, dir, mode);
+	return dquot_initialize(inode);
+}
+
+static int reiserfs_create(struct mnt_idmap *idmap, struct inode *dir,
+			   struct dentry *dentry, umode_t mode, bool excl)
+{
+	int retval;
+	struct inode *inode;
+	/*
+	 * We need blocks for transaction + (user+group)*(quotas
+	 * for new inode + update of quota for directory owner)
+	 */
+	int jbegin_count =
+	    JOURNAL_PER_BALANCE_CNT * 2 +
+	    2 * (REISERFS_QUOTA_INIT_BLOCKS(dir->i_sb) +
+		 REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb));
+	struct reiserfs_transaction_handle th;
+	struct reiserfs_security_handle security;
+
+	retval = dquot_initialize(dir);
+	if (retval)
+		return retval;
+
+	if (!(inode = new_inode(dir->i_sb))) {
+		return -ENOMEM;
+	}
+	retval = new_inode_init(inode, dir, mode);
+	if (retval) {
+		drop_new_inode(inode);
+		return retval;
+	}
+
+	jbegin_count += reiserfs_cache_default_acl(dir);
+	retval = reiserfs_security_init(dir, inode, &dentry->d_name, &security);
+	if (retval < 0) {
+		drop_new_inode(inode);
+		return retval;
+	}
+	jbegin_count += retval;
+	reiserfs_write_lock(dir->i_sb);
+
+	retval = journal_begin(&th, dir->i_sb, jbegin_count);
+	if (retval) {
+		drop_new_inode(inode);
+		goto out_failed;
+	}
+
+	retval =
+	    reiserfs_new_inode(&th, dir, mode, NULL, 0 /*i_size */ , dentry,
+			       inode, &security);
+	if (retval)
+		goto out_failed;
+
+	inode->i_op = &reiserfs_file_inode_operations;
+	inode->i_fop = &reiserfs_file_operations;
+	inode->i_mapping->a_ops = &reiserfs_address_space_operations;
+
+	retval =
+	    reiserfs_add_entry(&th, dir, dentry->d_name.name,
+			       dentry->d_name.len, inode, 1 /*visible */ );
+	if (retval) {
+		int err;
+		drop_nlink(inode);
+		reiserfs_update_sd(&th, inode);
+		err = journal_end(&th);
+		if (err)
+			retval = err;
+		unlock_new_inode(inode);
+		iput(inode);
+		goto out_failed;
+	}
+	reiserfs_update_inode_transaction(inode);
+	reiserfs_update_inode_transaction(dir);
+
+	d_instantiate_new(dentry, inode);
+	retval = journal_end(&th);
+
+out_failed:
+	reiserfs_write_unlock(dir->i_sb);
+	reiserfs_security_free(&security);
+	return retval;
+}
+
+static int reiserfs_mknod(struct mnt_idmap *idmap, struct inode *dir,
+			  struct dentry *dentry, umode_t mode, dev_t rdev)
+{
+	int retval;
+	struct inode *inode;
+	struct reiserfs_transaction_handle th;
+	struct reiserfs_security_handle security;
+	/*
+	 * We need blocks for transaction + (user+group)*(quotas
+	 * for new inode + update of quota for directory owner)
+	 */
+	int jbegin_count =
+	    JOURNAL_PER_BALANCE_CNT * 3 +
+	    2 * (REISERFS_QUOTA_INIT_BLOCKS(dir->i_sb) +
+		 REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb));
+
+	retval = dquot_initialize(dir);
+	if (retval)
+		return retval;
+
+	if (!(inode = new_inode(dir->i_sb))) {
+		return -ENOMEM;
+	}
+	retval = new_inode_init(inode, dir, mode);
+	if (retval) {
+		drop_new_inode(inode);
+		return retval;
+	}
+
+	jbegin_count += reiserfs_cache_default_acl(dir);
+	retval = reiserfs_security_init(dir, inode, &dentry->d_name, &security);
+	if (retval < 0) {
+		drop_new_inode(inode);
+		return retval;
+	}
+	jbegin_count += retval;
+	reiserfs_write_lock(dir->i_sb);
+
+	retval = journal_begin(&th, dir->i_sb, jbegin_count);
+	if (retval) {
+		drop_new_inode(inode);
+		goto out_failed;
+	}
+
+	retval =
+	    reiserfs_new_inode(&th, dir, mode, NULL, 0 /*i_size */ , dentry,
+			       inode, &security);
+	if (retval) {
+		goto out_failed;
+	}
+
+	inode->i_op = &reiserfs_special_inode_operations;
+	init_special_inode(inode, inode->i_mode, rdev);
+
+	/* FIXME: needed for block and char devices only */
+	reiserfs_update_sd(&th, inode);
+
+	reiserfs_update_inode_transaction(inode);
+	reiserfs_update_inode_transaction(dir);
+
+	retval =
+	    reiserfs_add_entry(&th, dir, dentry->d_name.name,
+			       dentry->d_name.len, inode, 1 /*visible */ );
+	if (retval) {
+		int err;
+		drop_nlink(inode);
+		reiserfs_update_sd(&th, inode);
+		err = journal_end(&th);
+		if (err)
+			retval = err;
+		unlock_new_inode(inode);
+		iput(inode);
+		goto out_failed;
+	}
+
+	d_instantiate_new(dentry, inode);
+	retval = journal_end(&th);
+
+out_failed:
+	reiserfs_write_unlock(dir->i_sb);
+	reiserfs_security_free(&security);
+	return retval;
+}
+
+static int reiserfs_mkdir(struct mnt_idmap *idmap, struct inode *dir,
+			  struct dentry *dentry, umode_t mode)
+{
+	int retval;
+	struct inode *inode;
+	struct reiserfs_transaction_handle th;
+	struct reiserfs_security_handle security;
+	/*
+	 * We need blocks for transaction + (user+group)*(quotas
+	 * for new inode + update of quota for directory owner)
+	 */
+	int jbegin_count =
+	    JOURNAL_PER_BALANCE_CNT * 3 +
+	    2 * (REISERFS_QUOTA_INIT_BLOCKS(dir->i_sb) +
+		 REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb));
+
+	retval = dquot_initialize(dir);
+	if (retval)
+		return retval;
+
+#ifdef DISPLACE_NEW_PACKING_LOCALITIES
+	/*
+	 * set flag that new packing locality created and new blocks
+	 * for the content of that directory are not displaced yet
+	 */
+	REISERFS_I(dir)->new_packing_locality = 1;
+#endif
+	mode = S_IFDIR | mode;
+	if (!(inode = new_inode(dir->i_sb))) {
+		return -ENOMEM;
+	}
+	retval = new_inode_init(inode, dir, mode);
+	if (retval) {
+		drop_new_inode(inode);
+		return retval;
+	}
+
+	jbegin_count += reiserfs_cache_default_acl(dir);
+	retval = reiserfs_security_init(dir, inode, &dentry->d_name, &security);
+	if (retval < 0) {
+		drop_new_inode(inode);
+		return retval;
+	}
+	jbegin_count += retval;
+	reiserfs_write_lock(dir->i_sb);
+
+	retval = journal_begin(&th, dir->i_sb, jbegin_count);
+	if (retval) {
+		drop_new_inode(inode);
+		goto out_failed;
+	}
+
+	/*
+	 * inc the link count now, so another writer doesn't overflow
+	 * it while we sleep later on.
+	 */
+	INC_DIR_INODE_NLINK(dir)
+
+	retval = reiserfs_new_inode(&th, dir, mode, NULL /*symlink */,
+				    old_format_only(dir->i_sb) ?
+				    EMPTY_DIR_SIZE_V1 : EMPTY_DIR_SIZE,
+				    dentry, inode, &security);
+	if (retval) {
+		DEC_DIR_INODE_NLINK(dir)
+		goto out_failed;
+	}
+
+	reiserfs_update_inode_transaction(inode);
+	reiserfs_update_inode_transaction(dir);
+
+	inode->i_op = &reiserfs_dir_inode_operations;
+	inode->i_fop = &reiserfs_dir_operations;
+
+	/* note, _this_ add_entry will not update dir's stat data */
+	retval =
+	    reiserfs_add_entry(&th, dir, dentry->d_name.name,
+			       dentry->d_name.len, inode, 1 /*visible */ );
+	if (retval) {
+		int err;
+		clear_nlink(inode);
+		DEC_DIR_INODE_NLINK(dir);
+		reiserfs_update_sd(&th, inode);
+		err = journal_end(&th);
+		if (err)
+			retval = err;
+		unlock_new_inode(inode);
+		iput(inode);
+		goto out_failed;
+	}
+	/* the above add_entry did not update dir's stat data */
+	reiserfs_update_sd(&th, dir);
+
+	d_instantiate_new(dentry, inode);
+	retval = journal_end(&th);
+out_failed:
+	reiserfs_write_unlock(dir->i_sb);
+	reiserfs_security_free(&security);
+	return retval;
+}
+
+static inline int reiserfs_empty_dir(struct inode *inode)
+{
+	/*
+	 * we can cheat because an old format dir cannot have
+	 * EMPTY_DIR_SIZE, and a new format dir cannot have
+	 * EMPTY_DIR_SIZE_V1.  So, if the inode is either size,
+	 * regardless of disk format version, the directory is empty.
+	 */
+	if (inode->i_size != EMPTY_DIR_SIZE &&
+	    inode->i_size != EMPTY_DIR_SIZE_V1) {
+		return 0;
+	}
+	return 1;
+}
+
+static int reiserfs_rmdir(struct inode *dir, struct dentry *dentry)
+{
+	int retval, err;
+	struct inode *inode;
+	struct reiserfs_transaction_handle th;
+	int jbegin_count;
+	INITIALIZE_PATH(path);
+	struct reiserfs_dir_entry de;
+
+	/*
+	 * we will be doing 2 balancings and update 2 stat data, we
+	 * change quotas of the owner of the directory and of the owner
+	 * of the parent directory.  The quota structure is possibly
+	 * deleted only on last iput => outside of this transaction
+	 */
+	jbegin_count =
+	    JOURNAL_PER_BALANCE_CNT * 2 + 2 +
+	    4 * REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb);
+
+	retval = dquot_initialize(dir);
+	if (retval)
+		return retval;
+
+	reiserfs_write_lock(dir->i_sb);
+	retval = journal_begin(&th, dir->i_sb, jbegin_count);
+	if (retval)
+		goto out_rmdir;
+
+	de.de_gen_number_bit_string = NULL;
+	if ((retval =
+	     reiserfs_find_entry(dir, dentry->d_name.name, dentry->d_name.len,
+				 &path, &de)) == NAME_NOT_FOUND) {
+		retval = -ENOENT;
+		goto end_rmdir;
+	} else if (retval == IO_ERROR) {
+		retval = -EIO;
+		goto end_rmdir;
+	}
+
+	inode = d_inode(dentry);
+
+	reiserfs_update_inode_transaction(inode);
+	reiserfs_update_inode_transaction(dir);
+
+	if (de.de_objectid != inode->i_ino) {
+		/*
+		 * FIXME: compare key of an object and a key found in the entry
+		 */
+		retval = -EIO;
+		goto end_rmdir;
+	}
+	if (!reiserfs_empty_dir(inode)) {
+		retval = -ENOTEMPTY;
+		goto end_rmdir;
+	}
+
+	/* cut entry from dir directory */
+	retval = reiserfs_cut_from_item(&th, &path, &de.de_entry_key,
+					dir, NULL,	/* page */
+					0 /*new file size - not used here */ );
+	if (retval < 0)
+		goto end_rmdir;
+
+	if (inode->i_nlink != 2 && inode->i_nlink != 1)
+		reiserfs_error(inode->i_sb, "reiserfs-7040",
+			       "empty directory has nlink != 2 (%d)",
+			       inode->i_nlink);
+
+	clear_nlink(inode);
+	dir->i_mtime = inode_set_ctime_to_ts(dir,
+					     inode_set_ctime_current(inode));
+	reiserfs_update_sd(&th, inode);
+
+	DEC_DIR_INODE_NLINK(dir)
+	dir->i_size -= (DEH_SIZE + de.de_entrylen);
+	reiserfs_update_sd(&th, dir);
+
+	/* prevent empty directory from getting lost */
+	add_save_link(&th, inode, 0 /* not truncate */ );
+
+	retval = journal_end(&th);
+	reiserfs_check_path(&path);
+out_rmdir:
+	reiserfs_write_unlock(dir->i_sb);
+	return retval;
+
+end_rmdir:
+	/*
+	 * we must release path, because we did not call
+	 * reiserfs_cut_from_item, or reiserfs_cut_from_item does not
+	 * release path if operation was not complete
+	 */
+	pathrelse(&path);
+	err = journal_end(&th);
+	reiserfs_write_unlock(dir->i_sb);
+	return err ? err : retval;
+}
+
+static int reiserfs_unlink(struct inode *dir, struct dentry *dentry)
+{
+	int retval, err;
+	struct inode *inode;
+	struct reiserfs_dir_entry de;
+	INITIALIZE_PATH(path);
+	struct reiserfs_transaction_handle th;
+	int jbegin_count;
+	unsigned long savelink;
+
+	retval = dquot_initialize(dir);
+	if (retval)
+		return retval;
+
+	inode = d_inode(dentry);
+
+	/*
+	 * in this transaction we can be doing at max two balancings and
+	 * update two stat datas, we change quotas of the owner of the
+	 * directory and of the owner of the parent directory. The quota
+	 * structure is possibly deleted only on iput => outside of
+	 * this transaction
+	 */
+	jbegin_count =
+	    JOURNAL_PER_BALANCE_CNT * 2 + 2 +
+	    4 * REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb);
+
+	reiserfs_write_lock(dir->i_sb);
+	retval = journal_begin(&th, dir->i_sb, jbegin_count);
+	if (retval)
+		goto out_unlink;
+
+	de.de_gen_number_bit_string = NULL;
+	if ((retval =
+	     reiserfs_find_entry(dir, dentry->d_name.name, dentry->d_name.len,
+				 &path, &de)) == NAME_NOT_FOUND) {
+		retval = -ENOENT;
+		goto end_unlink;
+	} else if (retval == IO_ERROR) {
+		retval = -EIO;
+		goto end_unlink;
+	}
+
+	reiserfs_update_inode_transaction(inode);
+	reiserfs_update_inode_transaction(dir);
+
+	if (de.de_objectid != inode->i_ino) {
+		/*
+		 * FIXME: compare key of an object and a key found in the entry
+		 */
+		retval = -EIO;
+		goto end_unlink;
+	}
+
+	if (!inode->i_nlink) {
+		reiserfs_warning(inode->i_sb, "reiserfs-7042",
+				 "deleting nonexistent file (%lu), %d",
+				 inode->i_ino, inode->i_nlink);
+		set_nlink(inode, 1);
+	}
+
+	drop_nlink(inode);
+
+	/*
+	 * we schedule before doing the add_save_link call, save the link
+	 * count so we don't race
+	 */
+	savelink = inode->i_nlink;
+
+	retval =
+	    reiserfs_cut_from_item(&th, &path, &de.de_entry_key, dir, NULL,
+				   0);
+	if (retval < 0) {
+		inc_nlink(inode);
+		goto end_unlink;
+	}
+	inode_set_ctime_current(inode);
+	reiserfs_update_sd(&th, inode);
+
+	dir->i_size -= (de.de_entrylen + DEH_SIZE);
+	dir->i_mtime = inode_set_ctime_current(dir);
+	reiserfs_update_sd(&th, dir);
+
+	if (!savelink)
+		/* prevent file from getting lost */
+		add_save_link(&th, inode, 0 /* not truncate */ );
+
+	retval = journal_end(&th);
+	reiserfs_check_path(&path);
+	reiserfs_write_unlock(dir->i_sb);
+	return retval;
+
+end_unlink:
+	pathrelse(&path);
+	err = journal_end(&th);
+	reiserfs_check_path(&path);
+	if (err)
+		retval = err;
+out_unlink:
+	reiserfs_write_unlock(dir->i_sb);
+	return retval;
+}
+
+static int reiserfs_symlink(struct mnt_idmap *idmap,
+			    struct inode *parent_dir, struct dentry *dentry,
+			    const char *symname)
+{
+	int retval;
+	struct inode *inode;
+	char *name;
+	int item_len;
+	struct reiserfs_transaction_handle th;
+	struct reiserfs_security_handle security;
+	int mode = S_IFLNK | S_IRWXUGO;
+	/*
+	 * We need blocks for transaction + (user+group)*(quotas for
+	 * new inode + update of quota for directory owner)
+	 */
+	int jbegin_count =
+	    JOURNAL_PER_BALANCE_CNT * 3 +
+	    2 * (REISERFS_QUOTA_INIT_BLOCKS(parent_dir->i_sb) +
+		 REISERFS_QUOTA_TRANS_BLOCKS(parent_dir->i_sb));
+
+	retval = dquot_initialize(parent_dir);
+	if (retval)
+		return retval;
+
+	if (!(inode = new_inode(parent_dir->i_sb))) {
+		return -ENOMEM;
+	}
+	retval = new_inode_init(inode, parent_dir, mode);
+	if (retval) {
+		drop_new_inode(inode);
+		return retval;
+	}
+
+	retval = reiserfs_security_init(parent_dir, inode, &dentry->d_name,
+					&security);
+	if (retval < 0) {
+		drop_new_inode(inode);
+		return retval;
+	}
+	jbegin_count += retval;
+
+	reiserfs_write_lock(parent_dir->i_sb);
+	item_len = ROUND_UP(strlen(symname));
+	if (item_len > MAX_DIRECT_ITEM_LEN(parent_dir->i_sb->s_blocksize)) {
+		retval = -ENAMETOOLONG;
+		drop_new_inode(inode);
+		goto out_failed;
+	}
+
+	name = kmalloc(item_len, GFP_NOFS);
+	if (!name) {
+		drop_new_inode(inode);
+		retval = -ENOMEM;
+		goto out_failed;
+	}
+	memcpy(name, symname, strlen(symname));
+	padd_item(name, item_len, strlen(symname));
+
+	retval = journal_begin(&th, parent_dir->i_sb, jbegin_count);
+	if (retval) {
+		drop_new_inode(inode);
+		kfree(name);
+		goto out_failed;
+	}
+
+	retval =
+	    reiserfs_new_inode(&th, parent_dir, mode, name, strlen(symname),
+			       dentry, inode, &security);
+	kfree(name);
+	if (retval) {		/* reiserfs_new_inode iputs for us */
+		goto out_failed;
+	}
+
+	reiserfs_update_inode_transaction(inode);
+	reiserfs_update_inode_transaction(parent_dir);
+
+	inode->i_op = &reiserfs_symlink_inode_operations;
+	inode_nohighmem(inode);
+	inode->i_mapping->a_ops = &reiserfs_address_space_operations;
+
+	retval = reiserfs_add_entry(&th, parent_dir, dentry->d_name.name,
+				    dentry->d_name.len, inode, 1 /*visible */ );
+	if (retval) {
+		int err;
+		drop_nlink(inode);
+		reiserfs_update_sd(&th, inode);
+		err = journal_end(&th);
+		if (err)
+			retval = err;
+		unlock_new_inode(inode);
+		iput(inode);
+		goto out_failed;
+	}
+
+	d_instantiate_new(dentry, inode);
+	retval = journal_end(&th);
+out_failed:
+	reiserfs_write_unlock(parent_dir->i_sb);
+	reiserfs_security_free(&security);
+	return retval;
+}
+
+static int reiserfs_link(struct dentry *old_dentry, struct inode *dir,
+			 struct dentry *dentry)
+{
+	int retval;
+	struct inode *inode = d_inode(old_dentry);
+	struct reiserfs_transaction_handle th;
+	/*
+	 * We need blocks for transaction + update of quotas for
+	 * the owners of the directory
+	 */
+	int jbegin_count =
+	    JOURNAL_PER_BALANCE_CNT * 3 +
+	    2 * REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb);
+
+	retval = dquot_initialize(dir);
+	if (retval)
+		return retval;
+
+	reiserfs_write_lock(dir->i_sb);
+	if (inode->i_nlink >= REISERFS_LINK_MAX) {
+		/* FIXME: sd_nlink is 32 bit for new files */
+		reiserfs_write_unlock(dir->i_sb);
+		return -EMLINK;
+	}
+
+	/* inc before scheduling so reiserfs_unlink knows we are here */
+	inc_nlink(inode);
+
+	retval = journal_begin(&th, dir->i_sb, jbegin_count);
+	if (retval) {
+		drop_nlink(inode);
+		reiserfs_write_unlock(dir->i_sb);
+		return retval;
+	}
+
+	/* create new entry */
+	retval =
+	    reiserfs_add_entry(&th, dir, dentry->d_name.name,
+			       dentry->d_name.len, inode, 1 /*visible */ );
+
+	reiserfs_update_inode_transaction(inode);
+	reiserfs_update_inode_transaction(dir);
+
+	if (retval) {
+		int err;
+		drop_nlink(inode);
+		err = journal_end(&th);
+		reiserfs_write_unlock(dir->i_sb);
+		return err ? err : retval;
+	}
+
+	inode_set_ctime_current(inode);
+	reiserfs_update_sd(&th, inode);
+
+	ihold(inode);
+	d_instantiate(dentry, inode);
+	retval = journal_end(&th);
+	reiserfs_write_unlock(dir->i_sb);
+	return retval;
+}
+
+/* de contains information pointing to an entry which */
+static int de_still_valid(const char *name, int len,
+			  struct reiserfs_dir_entry *de)
+{
+	struct reiserfs_dir_entry tmp = *de;
+
+	/* recalculate pointer to name and name length */
+	set_de_name_and_namelen(&tmp);
+	/* FIXME: could check more */
+	if (tmp.de_namelen != len || memcmp(name, de->de_name, len))
+		return 0;
+	return 1;
+}
+
+static int entry_points_to_object(const char *name, int len,
+				  struct reiserfs_dir_entry *de,
+				  struct inode *inode)
+{
+	if (!de_still_valid(name, len, de))
+		return 0;
+
+	if (inode) {
+		if (!de_visible(de->de_deh + de->de_entry_num))
+			reiserfs_panic(inode->i_sb, "vs-7042",
+				       "entry must be visible");
+		return (de->de_objectid == inode->i_ino) ? 1 : 0;
+	}
+
+	/* this must be added hidden entry */
+	if (de_visible(de->de_deh + de->de_entry_num))
+		reiserfs_panic(NULL, "vs-7043", "entry must be visible");
+
+	return 1;
+}
+
+/* sets key of objectid the entry has to point to */
+static void set_ino_in_dir_entry(struct reiserfs_dir_entry *de,
+				 struct reiserfs_key *key)
+{
+	/* JDM These operations are endian safe - both are le */
+	de->de_deh[de->de_entry_num].deh_dir_id = key->k_dir_id;
+	de->de_deh[de->de_entry_num].deh_objectid = key->k_objectid;
+}
+
+/*
+ * process, that is going to call fix_nodes/do_balance must hold only
+ * one path. If it holds 2 or more, it can get into endless waiting in
+ * get_empty_nodes or its clones
+ */
+static int reiserfs_rename(struct mnt_idmap *idmap,
+			   struct inode *old_dir, struct dentry *old_dentry,
+			   struct inode *new_dir, struct dentry *new_dentry,
+			   unsigned int flags)
+{
+	int retval;
+	INITIALIZE_PATH(old_entry_path);
+	INITIALIZE_PATH(new_entry_path);
+	INITIALIZE_PATH(dot_dot_entry_path);
+	struct item_head new_entry_ih, old_entry_ih, dot_dot_ih;
+	struct reiserfs_dir_entry old_de, new_de, dot_dot_de;
+	struct inode *old_inode, *new_dentry_inode;
+	struct reiserfs_transaction_handle th;
+	int jbegin_count;
+	umode_t old_inode_mode;
+	unsigned long savelink = 1;
+
+	if (flags & ~RENAME_NOREPLACE)
+		return -EINVAL;
+
+	/*
+	 * three balancings: (1) old name removal, (2) new name insertion
+	 * and (3) maybe "save" link insertion
+	 * stat data updates: (1) old directory,
+	 * (2) new directory and (3) maybe old object stat data (when it is
+	 * directory) and (4) maybe stat data of object to which new entry
+	 * pointed initially and (5) maybe block containing ".." of
+	 * renamed directory
+	 * quota updates: two parent directories
+	 */
+	jbegin_count =
+	    JOURNAL_PER_BALANCE_CNT * 3 + 5 +
+	    4 * REISERFS_QUOTA_TRANS_BLOCKS(old_dir->i_sb);
+
+	retval = dquot_initialize(old_dir);
+	if (retval)
+		return retval;
+	retval = dquot_initialize(new_dir);
+	if (retval)
+		return retval;
+
+	old_inode = d_inode(old_dentry);
+	new_dentry_inode = d_inode(new_dentry);
+
+	/*
+	 * make sure that oldname still exists and points to an object we
+	 * are going to rename
+	 */
+	old_de.de_gen_number_bit_string = NULL;
+	reiserfs_write_lock(old_dir->i_sb);
+	retval =
+	    reiserfs_find_entry(old_dir, old_dentry->d_name.name,
+				old_dentry->d_name.len, &old_entry_path,
+				&old_de);
+	pathrelse(&old_entry_path);
+	if (retval == IO_ERROR) {
+		reiserfs_write_unlock(old_dir->i_sb);
+		return -EIO;
+	}
+
+	if (retval != NAME_FOUND || old_de.de_objectid != old_inode->i_ino) {
+		reiserfs_write_unlock(old_dir->i_sb);
+		return -ENOENT;
+	}
+
+	old_inode_mode = old_inode->i_mode;
+	if (S_ISDIR(old_inode_mode)) {
+		/*
+		 * make sure that directory being renamed has correct ".."
+		 * and that its new parent directory has not too many links
+		 * already
+		 */
+		if (new_dentry_inode) {
+			if (!reiserfs_empty_dir(new_dentry_inode)) {
+				reiserfs_write_unlock(old_dir->i_sb);
+				return -ENOTEMPTY;
+			}
+		}
+
+		/*
+		 * directory is renamed, its parent directory will be changed,
+		 * so find ".." entry
+		 */
+		dot_dot_de.de_gen_number_bit_string = NULL;
+		retval =
+		    reiserfs_find_entry(old_inode, "..", 2, &dot_dot_entry_path,
+					&dot_dot_de);
+		pathrelse(&dot_dot_entry_path);
+		if (retval != NAME_FOUND) {
+			reiserfs_write_unlock(old_dir->i_sb);
+			return -EIO;
+		}
+
+		/* inode number of .. must equal old_dir->i_ino */
+		if (dot_dot_de.de_objectid != old_dir->i_ino) {
+			reiserfs_write_unlock(old_dir->i_sb);
+			return -EIO;
+		}
+	}
+
+	retval = journal_begin(&th, old_dir->i_sb, jbegin_count);
+	if (retval) {
+		reiserfs_write_unlock(old_dir->i_sb);
+		return retval;
+	}
+
+	/* add new entry (or find the existing one) */
+	retval =
+	    reiserfs_add_entry(&th, new_dir, new_dentry->d_name.name,
+			       new_dentry->d_name.len, old_inode, 0);
+	if (retval == -EEXIST) {
+		if (!new_dentry_inode) {
+			reiserfs_panic(old_dir->i_sb, "vs-7050",
+				       "new entry is found, new inode == 0");
+		}
+	} else if (retval) {
+		int err = journal_end(&th);
+		reiserfs_write_unlock(old_dir->i_sb);
+		return err ? err : retval;
+	}
+
+	reiserfs_update_inode_transaction(old_dir);
+	reiserfs_update_inode_transaction(new_dir);
+
+	/*
+	 * this makes it so an fsync on an open fd for the old name will
+	 * commit the rename operation
+	 */
+	reiserfs_update_inode_transaction(old_inode);
+
+	if (new_dentry_inode)
+		reiserfs_update_inode_transaction(new_dentry_inode);
+
+	while (1) {
+		/*
+		 * look for old name using corresponding entry key
+		 * (found by reiserfs_find_entry)
+		 */
+		if ((retval =
+		     search_by_entry_key(new_dir->i_sb, &old_de.de_entry_key,
+					 &old_entry_path,
+					 &old_de)) != NAME_FOUND) {
+			pathrelse(&old_entry_path);
+			journal_end(&th);
+			reiserfs_write_unlock(old_dir->i_sb);
+			return -EIO;
+		}
+
+		copy_item_head(&old_entry_ih, tp_item_head(&old_entry_path));
+
+		reiserfs_prepare_for_journal(old_inode->i_sb, old_de.de_bh, 1);
+
+		/* look for new name by reiserfs_find_entry */
+		new_de.de_gen_number_bit_string = NULL;
+		retval =
+		    reiserfs_find_entry(new_dir, new_dentry->d_name.name,
+					new_dentry->d_name.len, &new_entry_path,
+					&new_de);
+		/*
+		 * reiserfs_add_entry should not return IO_ERROR,
+		 * because it is called with essentially same parameters from
+		 * reiserfs_add_entry above, and we'll catch any i/o errors
+		 * before we get here.
+		 */
+		if (retval != NAME_FOUND_INVISIBLE && retval != NAME_FOUND) {
+			pathrelse(&new_entry_path);
+			pathrelse(&old_entry_path);
+			journal_end(&th);
+			reiserfs_write_unlock(old_dir->i_sb);
+			return -EIO;
+		}
+
+		copy_item_head(&new_entry_ih, tp_item_head(&new_entry_path));
+
+		reiserfs_prepare_for_journal(old_inode->i_sb, new_de.de_bh, 1);
+
+		if (S_ISDIR(old_inode->i_mode)) {
+			if ((retval =
+			     search_by_entry_key(new_dir->i_sb,
+						 &dot_dot_de.de_entry_key,
+						 &dot_dot_entry_path,
+						 &dot_dot_de)) != NAME_FOUND) {
+				pathrelse(&dot_dot_entry_path);
+				pathrelse(&new_entry_path);
+				pathrelse(&old_entry_path);
+				journal_end(&th);
+				reiserfs_write_unlock(old_dir->i_sb);
+				return -EIO;
+			}
+			copy_item_head(&dot_dot_ih,
+				       tp_item_head(&dot_dot_entry_path));
+			/* node containing ".." gets into transaction */
+			reiserfs_prepare_for_journal(old_inode->i_sb,
+						     dot_dot_de.de_bh, 1);
+		}
+		/*
+		 * we should check seals here, not do
+		 * this stuff, yes? Then, having
+		 * gathered everything into RAM we
+		 * should lock the buffers, yes?  -Hans
+		 */
+		/*
+		 * probably.  our rename needs to hold more
+		 * than one path at once.  The seals would
+		 * have to be written to deal with multi-path
+		 * issues -chris
+		 */
+		/*
+		 * sanity checking before doing the rename - avoid races many
+		 * of the above checks could have scheduled.  We have to be
+		 * sure our items haven't been shifted by another process.
+		 */
+		if (item_moved(&new_entry_ih, &new_entry_path) ||
+		    !entry_points_to_object(new_dentry->d_name.name,
+					    new_dentry->d_name.len,
+					    &new_de, new_dentry_inode) ||
+		    item_moved(&old_entry_ih, &old_entry_path) ||
+		    !entry_points_to_object(old_dentry->d_name.name,
+					    old_dentry->d_name.len,
+					    &old_de, old_inode)) {
+			reiserfs_restore_prepared_buffer(old_inode->i_sb,
+							 new_de.de_bh);
+			reiserfs_restore_prepared_buffer(old_inode->i_sb,
+							 old_de.de_bh);
+			if (S_ISDIR(old_inode_mode))
+				reiserfs_restore_prepared_buffer(old_inode->
+								 i_sb,
+								 dot_dot_de.
+								 de_bh);
+			continue;
+		}
+		if (S_ISDIR(old_inode_mode)) {
+			if (item_moved(&dot_dot_ih, &dot_dot_entry_path) ||
+			    !entry_points_to_object("..", 2, &dot_dot_de,
+						    old_dir)) {
+				reiserfs_restore_prepared_buffer(old_inode->
+								 i_sb,
+								 old_de.de_bh);
+				reiserfs_restore_prepared_buffer(old_inode->
+								 i_sb,
+								 new_de.de_bh);
+				reiserfs_restore_prepared_buffer(old_inode->
+								 i_sb,
+								 dot_dot_de.
+								 de_bh);
+				continue;
+			}
+		}
+
+		RFALSE(S_ISDIR(old_inode_mode) &&
+		       !buffer_journal_prepared(dot_dot_de.de_bh), "");
+
+		break;
+	}
+
+	/*
+	 * ok, all the changes can be done in one fell swoop when we
+	 * have claimed all the buffers needed.
+	 */
+
+	mark_de_visible(new_de.de_deh + new_de.de_entry_num);
+	set_ino_in_dir_entry(&new_de, INODE_PKEY(old_inode));
+	journal_mark_dirty(&th, new_de.de_bh);
+
+	mark_de_hidden(old_de.de_deh + old_de.de_entry_num);
+	journal_mark_dirty(&th, old_de.de_bh);
+	/*
+	 * thanks to Alex Adriaanse <alex_a@caltech.edu> for patch
+	 * which adds ctime update of renamed object
+	 */
+	simple_rename_timestamp(old_dir, old_dentry, new_dir, new_dentry);
+
+	if (new_dentry_inode) {
+		/* adjust link number of the victim */
+		if (S_ISDIR(new_dentry_inode->i_mode)) {
+			clear_nlink(new_dentry_inode);
+		} else {
+			drop_nlink(new_dentry_inode);
+		}
+		savelink = new_dentry_inode->i_nlink;
+	}
+
+	if (S_ISDIR(old_inode_mode)) {
+		/* adjust ".." of renamed directory */
+		set_ino_in_dir_entry(&dot_dot_de, INODE_PKEY(new_dir));
+		journal_mark_dirty(&th, dot_dot_de.de_bh);
+
+		/*
+		 * there (in new_dir) was no directory, so it got new link
+		 * (".."  of renamed directory)
+		 */
+		if (!new_dentry_inode)
+			INC_DIR_INODE_NLINK(new_dir);
+
+		/* old directory lost one link - ".. " of renamed directory */
+		DEC_DIR_INODE_NLINK(old_dir);
+	}
+	/*
+	 * looks like in 2.3.99pre3 brelse is atomic.
+	 * so we can use pathrelse
+	 */
+	pathrelse(&new_entry_path);
+	pathrelse(&dot_dot_entry_path);
+
+	/*
+	 * FIXME: this reiserfs_cut_from_item's return value may screw up
+	 * anybody, but it will panic if will not be able to find the
+	 * entry. This needs one more clean up
+	 */
+	if (reiserfs_cut_from_item
+	    (&th, &old_entry_path, &old_de.de_entry_key, old_dir, NULL,
+	     0) < 0)
+		reiserfs_error(old_dir->i_sb, "vs-7060",
+			       "couldn't not cut old name. Fsck later?");
+
+	old_dir->i_size -= DEH_SIZE + old_de.de_entrylen;
+
+	reiserfs_update_sd(&th, old_dir);
+	reiserfs_update_sd(&th, new_dir);
+	reiserfs_update_sd(&th, old_inode);
+
+	if (new_dentry_inode) {
+		if (savelink == 0)
+			add_save_link(&th, new_dentry_inode,
+				      0 /* not truncate */ );
+		reiserfs_update_sd(&th, new_dentry_inode);
+	}
+
+	retval = journal_end(&th);
+	reiserfs_write_unlock(old_dir->i_sb);
+	return retval;
+}
+
+static const struct inode_operations reiserfs_priv_dir_inode_operations = {
+	.create = reiserfs_create,
+	.lookup = reiserfs_lookup,
+	.link = reiserfs_link,
+	.unlink = reiserfs_unlink,
+	.symlink = reiserfs_symlink,
+	.mkdir = reiserfs_mkdir,
+	.rmdir = reiserfs_rmdir,
+	.mknod = reiserfs_mknod,
+	.rename = reiserfs_rename,
+	.setattr = reiserfs_setattr,
+	.permission = reiserfs_permission,
+	.fileattr_get = reiserfs_fileattr_get,
+	.fileattr_set = reiserfs_fileattr_set,
+};
+
+static const struct inode_operations reiserfs_priv_symlink_inode_operations = {
+	.get_link	= page_get_link,
+	.setattr = reiserfs_setattr,
+	.permission = reiserfs_permission,
+};
+
+static const struct inode_operations reiserfs_priv_special_inode_operations = {
+	.setattr = reiserfs_setattr,
+	.permission = reiserfs_permission,
+};
+
+void reiserfs_init_priv_inode(struct inode *inode)
+{
+	inode->i_flags |= S_PRIVATE;
+	inode->i_opflags &= ~IOP_XATTR;
+
+	if (S_ISREG(inode->i_mode))
+		inode->i_op = &reiserfs_priv_file_inode_operations;
+	else if (S_ISDIR(inode->i_mode))
+		inode->i_op = &reiserfs_priv_dir_inode_operations;
+	else if (S_ISLNK(inode->i_mode))
+		inode->i_op = &reiserfs_priv_symlink_inode_operations;
+	else
+		inode->i_op = &reiserfs_priv_special_inode_operations;
+}
+
+/* directories can handle most operations...  */
+const struct inode_operations reiserfs_dir_inode_operations = {
+	.create = reiserfs_create,
+	.lookup = reiserfs_lookup,
+	.link = reiserfs_link,
+	.unlink = reiserfs_unlink,
+	.symlink = reiserfs_symlink,
+	.mkdir = reiserfs_mkdir,
+	.rmdir = reiserfs_rmdir,
+	.mknod = reiserfs_mknod,
+	.rename = reiserfs_rename,
+	.setattr = reiserfs_setattr,
+	.listxattr = reiserfs_listxattr,
+	.permission = reiserfs_permission,
+	.get_inode_acl = reiserfs_get_acl,
+	.set_acl = reiserfs_set_acl,
+	.fileattr_get = reiserfs_fileattr_get,
+	.fileattr_set = reiserfs_fileattr_set,
+};
+
+/*
+ * symlink operations.. same as page_symlink_inode_operations, with xattr
+ * stuff added
+ */
+const struct inode_operations reiserfs_symlink_inode_operations = {
+	.get_link	= page_get_link,
+	.setattr = reiserfs_setattr,
+	.listxattr = reiserfs_listxattr,
+	.permission = reiserfs_permission,
+};
+
+/*
+ * special file operations.. just xattr/acl stuff
+ */
+const struct inode_operations reiserfs_special_inode_operations = {
+	.setattr = reiserfs_setattr,
+	.listxattr = reiserfs_listxattr,
+	.permission = reiserfs_permission,
+	.get_inode_acl = reiserfs_get_acl,
+	.set_acl = reiserfs_set_acl,
+};