Automatic merge with /usr/src/ntfs-2.6.git.

1 files changed, 1888 insertions, 1348 deletions

diff --git a/fs/reiserfs/do_balan.c b/fs/reiserfs/do_balan.c
index 2118db2896c7..b2264ba3cc56 100644
--- a/fs/reiserfs/do_balan.c
+++ b/fs/reiserfs/do_balan.c
@@ -8,7 +8,6 @@
 /* balance the tree according to the analysis made before,		*/
 /* and using buffers obtained after all above.				*/
 
-
 /**
  ** balance_leaf_when_delete
  ** balance_leaf
@@ -24,23 +23,22 @@
 
 #ifdef CONFIG_REISERFS_CHECK
 
-struct tree_balance * cur_tb = NULL; /* detects whether more than one
-                                        copy of tb exists as a means
-                                        of checking whether schedule
-                                        is interrupting do_balance */
+struct tree_balance *cur_tb = NULL;	/* detects whether more than one
+					   copy of tb exists as a means
+					   of checking whether schedule
+					   is interrupting do_balance */
 #endif
 
-inline void do_balance_mark_leaf_dirty (struct tree_balance * tb, 
-					struct buffer_head * bh, int flag)
+inline void do_balance_mark_leaf_dirty(struct tree_balance *tb,
+				       struct buffer_head *bh, int flag)
 {
-    journal_mark_dirty(tb->transaction_handle,
-                       tb->transaction_handle->t_super, bh) ;
+	journal_mark_dirty(tb->transaction_handle,
+			   tb->transaction_handle->t_super, bh);
 }
 
 #define do_balance_mark_internal_dirty do_balance_mark_leaf_dirty
 #define do_balance_mark_sb_dirty do_balance_mark_leaf_dirty
 
-
 /* summary: 
  if deleting something ( tb->insert_size[0] < 0 )
    return(balance_leaf_when_delete()); (flag d handled here)
@@ -64,8 +62,6 @@ be performed by do_balance.
 
 -Hans */
 
-
-
 /* Balance leaf node in case of delete or cut: insert_size[0] < 0
  *
  * lnum, rnum can have values >= -1
@@ -73,1384 +69,1933 @@ be performed by do_balance.
  *	 0 means that nothing should be done with the neighbor
  *	>0 means to shift entirely or partly the specified number of items to the neighbor
  */
-static int balance_leaf_when_delete (struct tree_balance * tb, int flag)
+static int balance_leaf_when_delete(struct tree_balance *tb, int flag)
 {
-    struct buffer_head * tbS0 = PATH_PLAST_BUFFER (tb->tb_path);
-    int item_pos = PATH_LAST_POSITION (tb->tb_path);
-    int pos_in_item = tb->tb_path->pos_in_item;
-    struct buffer_info bi;
-    int n;
-    struct item_head * ih;
+	struct buffer_head *tbS0 = PATH_PLAST_BUFFER(tb->tb_path);
+	int item_pos = PATH_LAST_POSITION(tb->tb_path);
+	int pos_in_item = tb->tb_path->pos_in_item;
+	struct buffer_info bi;
+	int n;
+	struct item_head *ih;
 
-    RFALSE( tb->FR[0] && B_LEVEL (tb->FR[0]) != DISK_LEAF_NODE_LEVEL + 1,
-	    "vs- 12000: level: wrong FR %z", tb->FR[0]);
-    RFALSE( tb->blknum[0] > 1,
-	    "PAP-12005: tb->blknum == %d, can not be > 1", tb->blknum[0]);
-    RFALSE( ! tb->blknum[0] && ! PATH_H_PPARENT(tb->tb_path, 0),
-	    "PAP-12010: tree can not be empty");
+	RFALSE(tb->FR[0] && B_LEVEL(tb->FR[0]) != DISK_LEAF_NODE_LEVEL + 1,
+	       "vs- 12000: level: wrong FR %z", tb->FR[0]);
+	RFALSE(tb->blknum[0] > 1,
+	       "PAP-12005: tb->blknum == %d, can not be > 1", tb->blknum[0]);
+	RFALSE(!tb->blknum[0] && !PATH_H_PPARENT(tb->tb_path, 0),
+	       "PAP-12010: tree can not be empty");
 
-    ih = B_N_PITEM_HEAD (tbS0, item_pos);
+	ih = B_N_PITEM_HEAD(tbS0, item_pos);
 
-    /* Delete or truncate the item */
+	/* Delete or truncate the item */
 
-    switch (flag) {
-    case M_DELETE:   /* delete item in S[0] */
+	switch (flag) {
+	case M_DELETE:		/* delete item in S[0] */
+
+		RFALSE(ih_item_len(ih) + IH_SIZE != -tb->insert_size[0],
+		       "vs-12013: mode Delete, insert size %d, ih to be deleted %h",
+		       -tb->insert_size[0], ih);
+
+		bi.tb = tb;
+		bi.bi_bh = tbS0;
+		bi.bi_parent = PATH_H_PPARENT(tb->tb_path, 0);
+		bi.bi_position = PATH_H_POSITION(tb->tb_path, 1);
+		leaf_delete_items(&bi, 0, item_pos, 1, -1);
+
+		if (!item_pos && tb->CFL[0]) {
+			if (B_NR_ITEMS(tbS0)) {
+				replace_key(tb, tb->CFL[0], tb->lkey[0], tbS0,
+					    0);
+			} else {
+				if (!PATH_H_POSITION(tb->tb_path, 1))
+					replace_key(tb, tb->CFL[0], tb->lkey[0],
+						    PATH_H_PPARENT(tb->tb_path,
+								   0), 0);
+			}
+		}
 
-	RFALSE( ih_item_len(ih) + IH_SIZE != -tb->insert_size[0],
-	        "vs-12013: mode Delete, insert size %d, ih to be deleted %h",
- 		 -tb->insert_size [0], ih);
+		RFALSE(!item_pos && !tb->CFL[0],
+		       "PAP-12020: tb->CFL[0]==%p, tb->L[0]==%p", tb->CFL[0],
+		       tb->L[0]);
 
-	bi.tb = tb;
-	bi.bi_bh = tbS0;
-	bi.bi_parent = PATH_H_PPARENT (tb->tb_path, 0);
-	bi.bi_position = PATH_H_POSITION (tb->tb_path, 1);
-	leaf_delete_items (&bi, 0, item_pos, 1, -1);
-
-	if ( ! item_pos && tb->CFL[0] ) {
-	    if ( B_NR_ITEMS(tbS0) ) {
-		replace_key(tb, tb->CFL[0],tb->lkey[0],tbS0,0);
-	    }
-	    else {
-		if ( ! PATH_H_POSITION (tb->tb_path, 1) )
-		    replace_key(tb, tb->CFL[0],tb->lkey[0],PATH_H_PPARENT(tb->tb_path, 0),0);
-	    }
-	} 
-
-	RFALSE( ! item_pos && !tb->CFL[0],
-		"PAP-12020: tb->CFL[0]==%p, tb->L[0]==%p", tb->CFL[0], tb->L[0]);
-    
-	break;
-
-    case M_CUT: {  /* cut item in S[0] */
-	bi.tb = tb;
-	bi.bi_bh = tbS0;
-	bi.bi_parent = PATH_H_PPARENT (tb->tb_path, 0);
-	bi.bi_position = PATH_H_POSITION (tb->tb_path, 1);
-	if (is_direntry_le_ih (ih)) {
-
-	    /* UFS unlink semantics are such that you can only delete one directory entry at a time. */
-	    /* when we cut a directory tb->insert_size[0] means number of entries to be cut (always 1) */
-	    tb->insert_size[0] = -1;
-	    leaf_cut_from_buffer (&bi, item_pos, pos_in_item, -tb->insert_size[0]);
-
-	    RFALSE( ! item_pos && ! pos_in_item && ! tb->CFL[0],
-		    "PAP-12030: can not change delimiting key. CFL[0]=%p", 
-		    tb->CFL[0]);
-
-	    if ( ! item_pos && ! pos_in_item && tb->CFL[0] ) {
-		replace_key(tb, tb->CFL[0],tb->lkey[0],tbS0,0);
-	    }
-	} else {
-	    leaf_cut_from_buffer (&bi, item_pos, pos_in_item, -tb->insert_size[0]);
-
-	    RFALSE( ! ih_item_len(ih),
-		"PAP-12035: cut must leave non-zero dynamic length of item");
-	}
-	break;
-    }
-
-    default:
-	print_cur_tb ("12040");
-	reiserfs_panic (tb->tb_sb, "PAP-12040: balance_leaf_when_delete: unexpectable mode: %s(%d)",
-			(flag == M_PASTE) ? "PASTE" : ((flag == M_INSERT) ? "INSERT" : "UNKNOWN"), flag);
-    }
-
-    /* the rule is that no shifting occurs unless by shifting a node can be freed */
-    n = B_NR_ITEMS(tbS0);
-    if ( tb->lnum[0] )     /* L[0] takes part in balancing */
-    {
-	if ( tb->lnum[0] == -1 )    /* L[0] must be joined with S[0] */
-	{
-	    if ( tb->rnum[0] == -1 )    /* R[0] must be also joined with S[0] */
-	    {			
-		if ( tb->FR[0] == PATH_H_PPARENT(tb->tb_path, 0) )
-		{
-		    /* all contents of all the 3 buffers will be in L[0] */
-		    if ( PATH_H_POSITION (tb->tb_path, 1) == 0 && 1 < B_NR_ITEMS(tb->FR[0]) )
-			replace_key(tb, tb->CFL[0],tb->lkey[0],tb->FR[0],1);
-
-		    leaf_move_items (LEAF_FROM_S_TO_L, tb, n, -1, NULL);
-		    leaf_move_items (LEAF_FROM_R_TO_L, tb, B_NR_ITEMS(tb->R[0]), -1, NULL);
-
-		    reiserfs_invalidate_buffer (tb, tbS0);
-		    reiserfs_invalidate_buffer (tb, tb->R[0]);
-
-		    return 0;
+		break;
+
+	case M_CUT:{		/* cut item in S[0] */
+			bi.tb = tb;
+			bi.bi_bh = tbS0;
+			bi.bi_parent = PATH_H_PPARENT(tb->tb_path, 0);
+			bi.bi_position = PATH_H_POSITION(tb->tb_path, 1);
+			if (is_direntry_le_ih(ih)) {
+
+				/* UFS unlink semantics are such that you can only delete one directory entry at a time. */
+				/* when we cut a directory tb->insert_size[0] means number of entries to be cut (always 1) */
+				tb->insert_size[0] = -1;
+				leaf_cut_from_buffer(&bi, item_pos, pos_in_item,
+						     -tb->insert_size[0]);
+
+				RFALSE(!item_pos && !pos_in_item && !tb->CFL[0],
+				       "PAP-12030: can not change delimiting key. CFL[0]=%p",
+				       tb->CFL[0]);
+
+				if (!item_pos && !pos_in_item && tb->CFL[0]) {
+					replace_key(tb, tb->CFL[0], tb->lkey[0],
+						    tbS0, 0);
+				}
+			} else {
+				leaf_cut_from_buffer(&bi, item_pos, pos_in_item,
+						     -tb->insert_size[0]);
+
+				RFALSE(!ih_item_len(ih),
+				       "PAP-12035: cut must leave non-zero dynamic length of item");
+			}
+			break;
 		}
-		/* all contents of all the 3 buffers will be in R[0] */
-		leaf_move_items (LEAF_FROM_S_TO_R, tb, n, -1, NULL);
-		leaf_move_items (LEAF_FROM_L_TO_R, tb, B_NR_ITEMS(tb->L[0]), -1, NULL);
 
-		/* right_delimiting_key is correct in R[0] */
-		replace_key(tb, tb->CFR[0],tb->rkey[0],tb->R[0],0);
+	default:
+		print_cur_tb("12040");
+		reiserfs_panic(tb->tb_sb,
+			       "PAP-12040: balance_leaf_when_delete: unexpectable mode: %s(%d)",
+			       (flag ==
+				M_PASTE) ? "PASTE" : ((flag ==
+						       M_INSERT) ? "INSERT" :
+						      "UNKNOWN"), flag);
+	}
 
-		reiserfs_invalidate_buffer (tb, tbS0);
-		reiserfs_invalidate_buffer (tb, tb->L[0]);
+	/* the rule is that no shifting occurs unless by shifting a node can be freed */
+	n = B_NR_ITEMS(tbS0);
+	if (tb->lnum[0]) {	/* L[0] takes part in balancing */
+		if (tb->lnum[0] == -1) {	/* L[0] must be joined with S[0] */
+			if (tb->rnum[0] == -1) {	/* R[0] must be also joined with S[0] */
+				if (tb->FR[0] == PATH_H_PPARENT(tb->tb_path, 0)) {
+					/* all contents of all the 3 buffers will be in L[0] */
+					if (PATH_H_POSITION(tb->tb_path, 1) == 0
+					    && 1 < B_NR_ITEMS(tb->FR[0]))
+						replace_key(tb, tb->CFL[0],
+							    tb->lkey[0],
+							    tb->FR[0], 1);
+
+					leaf_move_items(LEAF_FROM_S_TO_L, tb, n,
+							-1, NULL);
+					leaf_move_items(LEAF_FROM_R_TO_L, tb,
+							B_NR_ITEMS(tb->R[0]),
+							-1, NULL);
+
+					reiserfs_invalidate_buffer(tb, tbS0);
+					reiserfs_invalidate_buffer(tb,
+								   tb->R[0]);
+
+					return 0;
+				}
+				/* all contents of all the 3 buffers will be in R[0] */
+				leaf_move_items(LEAF_FROM_S_TO_R, tb, n, -1,
+						NULL);
+				leaf_move_items(LEAF_FROM_L_TO_R, tb,
+						B_NR_ITEMS(tb->L[0]), -1, NULL);
+
+				/* right_delimiting_key is correct in R[0] */
+				replace_key(tb, tb->CFR[0], tb->rkey[0],
+					    tb->R[0], 0);
 
-		return -1;
-	    }
+				reiserfs_invalidate_buffer(tb, tbS0);
+				reiserfs_invalidate_buffer(tb, tb->L[0]);
 
-	    RFALSE( tb->rnum[0] != 0, 
-		    "PAP-12045: rnum must be 0 (%d)", tb->rnum[0]);
-	    /* all contents of L[0] and S[0] will be in L[0] */
-	    leaf_shift_left(tb, n, -1);
+				return -1;
+			}
 
-	    reiserfs_invalidate_buffer (tb, tbS0);
+			RFALSE(tb->rnum[0] != 0,
+			       "PAP-12045: rnum must be 0 (%d)", tb->rnum[0]);
+			/* all contents of L[0] and S[0] will be in L[0] */
+			leaf_shift_left(tb, n, -1);
 
-	    return 0;
+			reiserfs_invalidate_buffer(tb, tbS0);
+
+			return 0;
+		}
+		/* a part of contents of S[0] will be in L[0] and the rest part of S[0] will be in R[0] */
+
+		RFALSE((tb->lnum[0] + tb->rnum[0] < n) ||
+		       (tb->lnum[0] + tb->rnum[0] > n + 1),
+		       "PAP-12050: rnum(%d) and lnum(%d) and item number(%d) in S[0] are not consistent",
+		       tb->rnum[0], tb->lnum[0], n);
+		RFALSE((tb->lnum[0] + tb->rnum[0] == n) &&
+		       (tb->lbytes != -1 || tb->rbytes != -1),
+		       "PAP-12055: bad rbytes (%d)/lbytes (%d) parameters when items are not split",
+		       tb->rbytes, tb->lbytes);
+		RFALSE((tb->lnum[0] + tb->rnum[0] == n + 1) &&
+		       (tb->lbytes < 1 || tb->rbytes != -1),
+		       "PAP-12060: bad rbytes (%d)/lbytes (%d) parameters when items are split",
+		       tb->rbytes, tb->lbytes);
+
+		leaf_shift_left(tb, tb->lnum[0], tb->lbytes);
+		leaf_shift_right(tb, tb->rnum[0], tb->rbytes);
+
+		reiserfs_invalidate_buffer(tb, tbS0);
+
+		return 0;
 	}
-	/* a part of contents of S[0] will be in L[0] and the rest part of S[0] will be in R[0] */
-
-	RFALSE( ( tb->lnum[0] + tb->rnum[0] < n ) || 
-		( tb->lnum[0] + tb->rnum[0] > n+1 ),
-		"PAP-12050: rnum(%d) and lnum(%d) and item number(%d) in S[0] are not consistent",
-		tb->rnum[0], tb->lnum[0], n);
-	RFALSE( ( tb->lnum[0] + tb->rnum[0] == n ) && 
-		(tb->lbytes != -1 || tb->rbytes != -1),
-		"PAP-12055: bad rbytes (%d)/lbytes (%d) parameters when items are not split", 
-		tb->rbytes, tb->lbytes);
-	RFALSE( ( tb->lnum[0] + tb->rnum[0] == n + 1 ) && 
-		(tb->lbytes < 1 || tb->rbytes != -1),
-		"PAP-12060: bad rbytes (%d)/lbytes (%d) parameters when items are split", 
-		tb->rbytes, tb->lbytes);
-
-	leaf_shift_left (tb, tb->lnum[0], tb->lbytes);
-	leaf_shift_right(tb, tb->rnum[0], tb->rbytes);
-
-	reiserfs_invalidate_buffer (tb, tbS0);
 
-	return 0;
-    }
+	if (tb->rnum[0] == -1) {
+		/* all contents of R[0] and S[0] will be in R[0] */
+		leaf_shift_right(tb, n, -1);
+		reiserfs_invalidate_buffer(tb, tbS0);
+		return 0;
+	}
 
-    if ( tb->rnum[0] == -1 ) {
-	/* all contents of R[0] and S[0] will be in R[0] */
-	leaf_shift_right(tb, n, -1);
-	reiserfs_invalidate_buffer (tb, tbS0);
+	RFALSE(tb->rnum[0],
+	       "PAP-12065: bad rnum parameter must be 0 (%d)", tb->rnum[0]);
 	return 0;
-    }
-
-    RFALSE( tb->rnum[0], 
-	    "PAP-12065: bad rnum parameter must be 0 (%d)", tb->rnum[0]);
-    return 0;
 }
 
-
-static int balance_leaf (struct tree_balance * tb,
-			 struct item_head * ih,		/* item header of inserted item (this is on little endian) */
-			 const char * body,		/* body  of inserted item or bytes to paste */
-			 int flag,			/* i - insert, d - delete, c - cut, p - paste
-							   (see comment to do_balance) */
-			 struct item_head * insert_key,  /* in our processing of one level we sometimes determine what
-							    must be inserted into the next higher level.  This insertion
-							    consists of a key or two keys and their corresponding
-							    pointers */
-			 struct buffer_head ** insert_ptr /* inserted node-ptrs for the next level */
+static int balance_leaf(struct tree_balance *tb, struct item_head *ih,	/* item header of inserted item (this is on little endian) */
+			const char *body,	/* body  of inserted item or bytes to paste */
+			int flag,	/* i - insert, d - delete, c - cut, p - paste
+					   (see comment to do_balance) */
+			struct item_head *insert_key,	/* in our processing of one level we sometimes determine what
+							   must be inserted into the next higher level.  This insertion
+							   consists of a key or two keys and their corresponding
+							   pointers */
+			struct buffer_head **insert_ptr	/* inserted node-ptrs for the next level */
     )
 {
-    struct buffer_head * tbS0 = PATH_PLAST_BUFFER (tb->tb_path);
-    int item_pos = PATH_LAST_POSITION (tb->tb_path);	/*  index into the array of item headers in S[0] 
-							    of the affected item */
-    struct buffer_info bi;
-    struct buffer_head *S_new[2];  /* new nodes allocated to hold what could not fit into S */
-    int snum[2];	    /* number of items that will be placed
-                               into S_new (includes partially shifted
-                               items) */
-    int sbytes[2];          /* if an item is partially shifted into S_new then 
-			       if it is a directory item 
-			       it is the number of entries from the item that are shifted into S_new
-			       else
-			       it is the number of bytes from the item that are shifted into S_new
-			    */
-    int n, i;
-    int ret_val;
-    int pos_in_item;
-    int zeros_num;
-
-    PROC_INFO_INC( tb -> tb_sb, balance_at[ 0 ] );
-
-    /* Make balance in case insert_size[0] < 0 */
-    if ( tb->insert_size[0] < 0 )
-	return balance_leaf_when_delete (tb, flag);
-  
-    zeros_num = 0;
-    if (flag == M_INSERT && body == 0)
-	zeros_num = ih_item_len( ih );
-
-    pos_in_item = tb->tb_path->pos_in_item;
-    /* for indirect item pos_in_item is measured in unformatted node
-       pointers. Recalculate to bytes */
-    if (flag != M_INSERT && is_indirect_le_ih (B_N_PITEM_HEAD (tbS0, item_pos)))
-	pos_in_item *= UNFM_P_SIZE;
-
-    if ( tb->lnum[0] > 0 ) {
-	/* Shift lnum[0] items from S[0] to the left neighbor L[0] */
-	if ( item_pos < tb->lnum[0] ) {
-	    /* new item or it part falls to L[0], shift it too */
-	    n = B_NR_ITEMS(tb->L[0]);
-
-	    switch (flag) {
-	    case M_INSERT:   /* insert item into L[0] */
-
-		if ( item_pos == tb->lnum[0] - 1 && tb->lbytes != -1 ) {
-		    /* part of new item falls into L[0] */
-		    int new_item_len;
-		    int version;
-
-		    ret_val = leaf_shift_left (tb, tb->lnum[0]-1, -1);
-
-		    /* Calculate item length to insert to S[0] */
-		    new_item_len = ih_item_len(ih) - tb->lbytes;
-		    /* Calculate and check item length to insert to L[0] */
-		    put_ih_item_len(ih, ih_item_len(ih) - new_item_len );
-
-		    RFALSE( ih_item_len(ih) <= 0,
-			    "PAP-12080: there is nothing to insert into L[0]: ih_item_len=%d",
-                            ih_item_len(ih));
-
-		    /* Insert new item into L[0] */
-		    bi.tb = tb;
-		    bi.bi_bh = tb->L[0];
-		    bi.bi_parent = tb->FL[0];
-		    bi.bi_position = get_left_neighbor_position (tb, 0);
-		    leaf_insert_into_buf (&bi, n + item_pos - ret_val, ih, body,
-					  zeros_num > ih_item_len(ih) ? ih_item_len(ih) : zeros_num);
-
-		    version = ih_version (ih);
-
-		    /* Calculate key component, item length and body to insert into S[0] */
-                    set_le_ih_k_offset( ih, le_ih_k_offset( ih ) + (tb->lbytes << (is_indirect_le_ih(ih)?tb->tb_sb->s_blocksize_bits - UNFM_P_SHIFT:0)) );
-
-		    put_ih_item_len( ih, new_item_len );
-		    if ( tb->lbytes >  zeros_num ) {
-			body += (tb->lbytes - zeros_num);
-			zeros_num = 0;
-		    }
-		    else
-			zeros_num -= tb->lbytes;
-
-		    RFALSE( ih_item_len(ih) <= 0,
-			"PAP-12085: there is nothing to insert into S[0]: ih_item_len=%d",
-			ih_item_len(ih));
-		} else {
-		    /* new item in whole falls into L[0] */
-		    /* Shift lnum[0]-1 items to L[0] */
-		    ret_val = leaf_shift_left(tb, tb->lnum[0]-1, tb->lbytes);
-		    /* Insert new item into L[0] */
-		    bi.tb = tb;
-		    bi.bi_bh = tb->L[0];
-		    bi.bi_parent = tb->FL[0];
-		    bi.bi_position = get_left_neighbor_position (tb, 0);
-		    leaf_insert_into_buf (&bi, n + item_pos - ret_val, ih, body, zeros_num);
-		    tb->insert_size[0] = 0;
-		    zeros_num = 0;
-		}
-		break;
-
-	    case M_PASTE:   /* append item in L[0] */
-
-		if ( item_pos == tb->lnum[0] - 1 && tb->lbytes != -1 ) {
-		    /* we must shift the part of the appended item */
-		    if ( is_direntry_le_ih (B_N_PITEM_HEAD (tbS0, item_pos))) {
-
-			RFALSE( zeros_num,
-				"PAP-12090: invalid parameter in case of a directory");
-			/* directory item */
-			if ( tb->lbytes > pos_in_item ) {
-			    /* new directory entry falls into L[0] */
-			    struct item_head * pasted;
-			    int l_pos_in_item = pos_in_item;
-							  
-			    /* Shift lnum[0] - 1 items in whole. Shift lbytes - 1 entries from given directory item */
-			    ret_val = leaf_shift_left(tb, tb->lnum[0], tb->lbytes - 1);
-			    if ( ret_val && ! item_pos ) {
-				pasted =  B_N_PITEM_HEAD(tb->L[0],B_NR_ITEMS(tb->L[0])-1);
-				l_pos_in_item += I_ENTRY_COUNT(pasted) - (tb->lbytes-1);
-			    }
-
-			    /* Append given directory entry to directory item */
-			    bi.tb = tb;
-			    bi.bi_bh = tb->L[0];
-			    bi.bi_parent = tb->FL[0];
-			    bi.bi_position = get_left_neighbor_position (tb, 0);
-			    leaf_paste_in_buffer (&bi, n + item_pos - ret_val, l_pos_in_item,
-						  tb->insert_size[0], body, zeros_num);
-
-			    /* previous string prepared space for pasting new entry, following string pastes this entry */
-
-			    /* when we have merge directory item, pos_in_item has been changed too */
-
-			    /* paste new directory entry. 1 is entry number */
-			    leaf_paste_entries (bi.bi_bh, n + item_pos - ret_val, l_pos_in_item, 1,
-						(struct reiserfs_de_head *)body, 
-						body + DEH_SIZE, tb->insert_size[0]
-				);
-			    tb->insert_size[0] = 0;
-			} else {
-			    /* new directory item doesn't fall into L[0] */
-			    /* Shift lnum[0]-1 items in whole. Shift lbytes directory entries from directory item number lnum[0] */
-			    leaf_shift_left (tb, tb->lnum[0], tb->lbytes);
-			}
-			/* Calculate new position to append in item body */
-			pos_in_item -= tb->lbytes;
-		    }
-		    else {
-			/* regular object */
-			RFALSE( tb->lbytes <= 0,
-			        "PAP-12095: there is nothing to shift to L[0]. lbytes=%d",
-				tb->lbytes);
-			RFALSE( pos_in_item != ih_item_len(B_N_PITEM_HEAD(tbS0, item_pos)),
-                                "PAP-12100: incorrect position to paste: item_len=%d, pos_in_item=%d",
-				ih_item_len(B_N_PITEM_HEAD(tbS0,item_pos)), pos_in_item);
-
-			if ( tb->lbytes >= pos_in_item ) {
-			    /* appended item will be in L[0] in whole */
-			    int l_n;
-
-			    /* this bytes number must be appended to the last item of L[h] */
-			    l_n = tb->lbytes - pos_in_item;
-
-			    /* Calculate new insert_size[0] */
-			    tb->insert_size[0] -= l_n;
-
-			    RFALSE( tb->insert_size[0] <= 0,
-				    "PAP-12105: there is nothing to paste into L[0]. insert_size=%d",
-				    tb->insert_size[0]);
-			    ret_val =  leaf_shift_left(tb,tb->lnum[0], 
-						       ih_item_len(B_N_PITEM_HEAD(tbS0,item_pos)));
-			    /* Append to body of item in L[0] */
-			    bi.tb = tb;
-			    bi.bi_bh = tb->L[0];
-			    bi.bi_parent = tb->FL[0];
-			    bi.bi_position = get_left_neighbor_position (tb, 0);
-			    leaf_paste_in_buffer(
-				&bi,n + item_pos - ret_val,
-				ih_item_len( B_N_PITEM_HEAD(tb->L[0],n+item_pos-ret_val)),
-				l_n,body, zeros_num > l_n ? l_n : zeros_num
-				);
-			    /* 0-th item in S0 can be only of DIRECT type when l_n != 0*/
-			    {
-				int version;
-				int temp_l = l_n;
-				
-				RFALSE (ih_item_len (B_N_PITEM_HEAD (tbS0, 0)),
-					"PAP-12106: item length must be 0");
-				RFALSE (comp_short_le_keys (B_N_PKEY (tbS0, 0),
-							    B_N_PKEY (tb->L[0],
-									    n + item_pos - ret_val)),
-					"PAP-12107: items must be of the same file");
-				if (is_indirect_le_ih(B_N_PITEM_HEAD (tb->L[0],
-								      n + item_pos - ret_val)))	{
-				    temp_l = l_n << (tb->tb_sb->s_blocksize_bits - UNFM_P_SHIFT);
+	struct buffer_head *tbS0 = PATH_PLAST_BUFFER(tb->tb_path);
+	int item_pos = PATH_LAST_POSITION(tb->tb_path);	/*  index into the array of item headers in S[0] 
+							   of the affected item */
+	struct buffer_info bi;
+	struct buffer_head *S_new[2];	/* new nodes allocated to hold what could not fit into S */
+	int snum[2];		/* number of items that will be placed
+				   into S_new (includes partially shifted
+				   items) */
+	int sbytes[2];		/* if an item is partially shifted into S_new then 
+				   if it is a directory item 
+				   it is the number of entries from the item that are shifted into S_new
+				   else
+				   it is the number of bytes from the item that are shifted into S_new
+				 */
+	int n, i;
+	int ret_val;
+	int pos_in_item;
+	int zeros_num;
+
+	PROC_INFO_INC(tb->tb_sb, balance_at[0]);
+
+	/* Make balance in case insert_size[0] < 0 */
+	if (tb->insert_size[0] < 0)
+		return balance_leaf_when_delete(tb, flag);
+
+	zeros_num = 0;
+	if (flag == M_INSERT && body == 0)
+		zeros_num = ih_item_len(ih);
+
+	pos_in_item = tb->tb_path->pos_in_item;
+	/* for indirect item pos_in_item is measured in unformatted node
+	   pointers. Recalculate to bytes */
+	if (flag != M_INSERT
+	    && is_indirect_le_ih(B_N_PITEM_HEAD(tbS0, item_pos)))
+		pos_in_item *= UNFM_P_SIZE;
+
+	if (tb->lnum[0] > 0) {
+		/* Shift lnum[0] items from S[0] to the left neighbor L[0] */
+		if (item_pos < tb->lnum[0]) {
+			/* new item or it part falls to L[0], shift it too */
+			n = B_NR_ITEMS(tb->L[0]);
+
+			switch (flag) {
+			case M_INSERT:	/* insert item into L[0] */
+
+				if (item_pos == tb->lnum[0] - 1
+				    && tb->lbytes != -1) {
+					/* part of new item falls into L[0] */
+					int new_item_len;
+					int version;
+
+					ret_val =
+					    leaf_shift_left(tb, tb->lnum[0] - 1,
+							    -1);
+
+					/* Calculate item length to insert to S[0] */
+					new_item_len =
+					    ih_item_len(ih) - tb->lbytes;
+					/* Calculate and check item length to insert to L[0] */
+					put_ih_item_len(ih,
+							ih_item_len(ih) -
+							new_item_len);
+
+					RFALSE(ih_item_len(ih) <= 0,
+					       "PAP-12080: there is nothing to insert into L[0]: ih_item_len=%d",
+					       ih_item_len(ih));
+
+					/* Insert new item into L[0] */
+					bi.tb = tb;
+					bi.bi_bh = tb->L[0];
+					bi.bi_parent = tb->FL[0];
+					bi.bi_position =
+					    get_left_neighbor_position(tb, 0);
+					leaf_insert_into_buf(&bi,
+							     n + item_pos -
+							     ret_val, ih, body,
+							     zeros_num >
+							     ih_item_len(ih) ?
+							     ih_item_len(ih) :
+							     zeros_num);
+
+					version = ih_version(ih);
+
+					/* Calculate key component, item length and body to insert into S[0] */
+					set_le_ih_k_offset(ih,
+							   le_ih_k_offset(ih) +
+							   (tb->
+							    lbytes <<
+							    (is_indirect_le_ih
+							     (ih) ? tb->tb_sb->
+							     s_blocksize_bits -
+							     UNFM_P_SHIFT :
+							     0)));
+
+					put_ih_item_len(ih, new_item_len);
+					if (tb->lbytes > zeros_num) {
+						body +=
+						    (tb->lbytes - zeros_num);
+						zeros_num = 0;
+					} else
+						zeros_num -= tb->lbytes;
+
+					RFALSE(ih_item_len(ih) <= 0,
+					       "PAP-12085: there is nothing to insert into S[0]: ih_item_len=%d",
+					       ih_item_len(ih));
+				} else {
+					/* new item in whole falls into L[0] */
+					/* Shift lnum[0]-1 items to L[0] */
+					ret_val =
+					    leaf_shift_left(tb, tb->lnum[0] - 1,
+							    tb->lbytes);
+					/* Insert new item into L[0] */
+					bi.tb = tb;
+					bi.bi_bh = tb->L[0];
+					bi.bi_parent = tb->FL[0];
+					bi.bi_position =
+					    get_left_neighbor_position(tb, 0);
+					leaf_insert_into_buf(&bi,
+							     n + item_pos -
+							     ret_val, ih, body,
+							     zeros_num);
+					tb->insert_size[0] = 0;
+					zeros_num = 0;
 				}
-				/* update key of first item in S0 */
-				version = ih_version (B_N_PITEM_HEAD (tbS0, 0));
-				set_le_key_k_offset (version, B_N_PKEY (tbS0, 0), 
-						     le_key_k_offset (version, B_N_PKEY (tbS0, 0)) + temp_l);
-				/* update left delimiting key */
-				set_le_key_k_offset (version, B_N_PDELIM_KEY(tb->CFL[0],tb->lkey[0]),
-						     le_key_k_offset (version, B_N_PDELIM_KEY(tb->CFL[0],tb->lkey[0])) + temp_l);
-			    }
-
-			    /* Calculate new body, position in item and insert_size[0] */
-			    if ( l_n > zeros_num ) {
-				body += (l_n - zeros_num);
-				zeros_num = 0;
-			    }
-			    else
-				zeros_num -= l_n;
-			    pos_in_item = 0;	
-
-			    RFALSE( comp_short_le_keys 
-				    (B_N_PKEY(tbS0,0),
-				     B_N_PKEY(tb->L[0],B_NR_ITEMS(tb->L[0])-1)) ||
-				
-				    !op_is_left_mergeable 
-				    (B_N_PKEY (tbS0, 0), tbS0->b_size) ||
-				    !op_is_left_mergeable
-				    (B_N_PDELIM_KEY(tb->CFL[0],tb->lkey[0]), 
-				     tbS0->b_size),
-				    "PAP-12120: item must be merge-able with left neighboring item");
-			}
-			else /* only part of the appended item will be in L[0] */
-			{
-			    /* Calculate position in item for append in S[0] */
-			    pos_in_item -= tb->lbytes;
-
-			    RFALSE( pos_in_item <= 0,
-				    "PAP-12125: no place for paste. pos_in_item=%d", pos_in_item);
-
-			    /* Shift lnum[0] - 1 items in whole. Shift lbytes - 1 byte from item number lnum[0] */
-			    leaf_shift_left(tb,tb->lnum[0],tb->lbytes);
-			}
-		    }
-		}
-		else /* appended item will be in L[0] in whole */
-		{
-		    struct item_head * pasted;
-
-			if ( ! item_pos  && op_is_left_mergeable (B_N_PKEY (tbS0, 0), tbS0->b_size) )
-			{ /* if we paste into first item of S[0] and it is left mergable */
-			    /* then increment pos_in_item by the size of the last item in L[0] */
-			    pasted = B_N_PITEM_HEAD(tb->L[0],n-1);
-			    if ( is_direntry_le_ih (pasted) )
-				pos_in_item += ih_entry_count(pasted);
-			    else
-				pos_in_item += ih_item_len(pasted);
+				break;
+
+			case M_PASTE:	/* append item in L[0] */
+
+				if (item_pos == tb->lnum[0] - 1
+				    && tb->lbytes != -1) {
+					/* we must shift the part of the appended item */
+					if (is_direntry_le_ih
+					    (B_N_PITEM_HEAD(tbS0, item_pos))) {
+
+						RFALSE(zeros_num,
+						       "PAP-12090: invalid parameter in case of a directory");
+						/* directory item */
+						if (tb->lbytes > pos_in_item) {
+							/* new directory entry falls into L[0] */
+							struct item_head
+							    *pasted;
+							int l_pos_in_item =
+							    pos_in_item;
+
+							/* Shift lnum[0] - 1 items in whole. Shift lbytes - 1 entries from given directory item */
+							ret_val =
+							    leaf_shift_left(tb,
+									    tb->
+									    lnum
+									    [0],
+									    tb->
+									    lbytes
+									    -
+									    1);
+							if (ret_val
+							    && !item_pos) {
+								pasted =
+								    B_N_PITEM_HEAD
+								    (tb->L[0],
+								     B_NR_ITEMS
+								     (tb->
+								      L[0]) -
+								     1);
+								l_pos_in_item +=
+								    I_ENTRY_COUNT
+								    (pasted) -
+								    (tb->
+								     lbytes -
+								     1);
+							}
+
+							/* Append given directory entry to directory item */
+							bi.tb = tb;
+							bi.bi_bh = tb->L[0];
+							bi.bi_parent =
+							    tb->FL[0];
+							bi.bi_position =
+							    get_left_neighbor_position
+							    (tb, 0);
+							leaf_paste_in_buffer
+							    (&bi,
+							     n + item_pos -
+							     ret_val,
+							     l_pos_in_item,
+							     tb->insert_size[0],
+							     body, zeros_num);
+
+							/* previous string prepared space for pasting new entry, following string pastes this entry */
+
+							/* when we have merge directory item, pos_in_item has been changed too */
+
+							/* paste new directory entry. 1 is entry number */
+							leaf_paste_entries(bi.
+									   bi_bh,
+									   n +
+									   item_pos
+									   -
+									   ret_val,
+									   l_pos_in_item,
+									   1,
+									   (struct
+									    reiserfs_de_head
+									    *)
+									   body,
+									   body
+									   +
+									   DEH_SIZE,
+									   tb->
+									   insert_size
+									   [0]
+							    );
+							tb->insert_size[0] = 0;
+						} else {
+							/* new directory item doesn't fall into L[0] */
+							/* Shift lnum[0]-1 items in whole. Shift lbytes directory entries from directory item number lnum[0] */
+							leaf_shift_left(tb,
+									tb->
+									lnum[0],
+									tb->
+									lbytes);
+						}
+						/* Calculate new position to append in item body */
+						pos_in_item -= tb->lbytes;
+					} else {
+						/* regular object */
+						RFALSE(tb->lbytes <= 0,
+						       "PAP-12095: there is nothing to shift to L[0]. lbytes=%d",
+						       tb->lbytes);
+						RFALSE(pos_in_item !=
+						       ih_item_len
+						       (B_N_PITEM_HEAD
+							(tbS0, item_pos)),
+						       "PAP-12100: incorrect position to paste: item_len=%d, pos_in_item=%d",
+						       ih_item_len
+						       (B_N_PITEM_HEAD
+							(tbS0, item_pos)),
+						       pos_in_item);
+
+						if (tb->lbytes >= pos_in_item) {
+							/* appended item will be in L[0] in whole */
+							int l_n;
+
+							/* this bytes number must be appended to the last item of L[h] */
+							l_n =
+							    tb->lbytes -
+							    pos_in_item;
+
+							/* Calculate new insert_size[0] */
+							tb->insert_size[0] -=
+							    l_n;
+
+							RFALSE(tb->
+							       insert_size[0] <=
+							       0,
+							       "PAP-12105: there is nothing to paste into L[0]. insert_size=%d",
+							       tb->
+							       insert_size[0]);
+							ret_val =
+							    leaf_shift_left(tb,
+									    tb->
+									    lnum
+									    [0],
+									    ih_item_len
+									    (B_N_PITEM_HEAD
+									     (tbS0,
+									      item_pos)));
+							/* Append to body of item in L[0] */
+							bi.tb = tb;
+							bi.bi_bh = tb->L[0];
+							bi.bi_parent =
+							    tb->FL[0];
+							bi.bi_position =
+							    get_left_neighbor_position
+							    (tb, 0);
+							leaf_paste_in_buffer
+							    (&bi,
+							     n + item_pos -
+							     ret_val,
+							     ih_item_len
+							     (B_N_PITEM_HEAD
+							      (tb->L[0],
+							       n + item_pos -
+							       ret_val)), l_n,
+							     body,
+							     zeros_num >
+							     l_n ? l_n :
+							     zeros_num);
+							/* 0-th item in S0 can be only of DIRECT type when l_n != 0 */
+							{
+								int version;
+								int temp_l =
+								    l_n;
+
+								RFALSE
+								    (ih_item_len
+								     (B_N_PITEM_HEAD
+								      (tbS0,
+								       0)),
+								     "PAP-12106: item length must be 0");
+								RFALSE
+								    (comp_short_le_keys
+								     (B_N_PKEY
+								      (tbS0, 0),
+								      B_N_PKEY
+								      (tb->L[0],
+								       n +
+								       item_pos
+								       -
+								       ret_val)),
+								     "PAP-12107: items must be of the same file");
+								if (is_indirect_le_ih(B_N_PITEM_HEAD(tb->L[0], n + item_pos - ret_val))) {
+									temp_l =
+									    l_n
+									    <<
+									    (tb->
+									     tb_sb->
+									     s_blocksize_bits
+									     -
+									     UNFM_P_SHIFT);
+								}
+								/* update key of first item in S0 */
+								version =
+								    ih_version
+								    (B_N_PITEM_HEAD
+								     (tbS0, 0));
+								set_le_key_k_offset
+								    (version,
+								     B_N_PKEY
+								     (tbS0, 0),
+								     le_key_k_offset
+								     (version,
+								      B_N_PKEY
+								      (tbS0,
+								       0)) +
+								     temp_l);
+								/* update left delimiting key */
+								set_le_key_k_offset
+								    (version,
+								     B_N_PDELIM_KEY
+								     (tb->
+								      CFL[0],
+								      tb->
+								      lkey[0]),
+								     le_key_k_offset
+								     (version,
+								      B_N_PDELIM_KEY
+								      (tb->
+								       CFL[0],
+								       tb->
+								       lkey[0]))
+								     + temp_l);
+							}
+
+							/* Calculate new body, position in item and insert_size[0] */
+							if (l_n > zeros_num) {
+								body +=
+								    (l_n -
+								     zeros_num);
+								zeros_num = 0;
+							} else
+								zeros_num -=
+								    l_n;
+							pos_in_item = 0;
+
+							RFALSE
+							    (comp_short_le_keys
+							     (B_N_PKEY(tbS0, 0),
+							      B_N_PKEY(tb->L[0],
+								       B_NR_ITEMS
+								       (tb->
+									L[0]) -
+								       1))
+							     ||
+							     !op_is_left_mergeable
+							     (B_N_PKEY(tbS0, 0),
+							      tbS0->b_size)
+							     ||
+							     !op_is_left_mergeable
+							     (B_N_PDELIM_KEY
+							      (tb->CFL[0],
+							       tb->lkey[0]),
+							      tbS0->b_size),
+							     "PAP-12120: item must be merge-able with left neighboring item");
+						} else {	/* only part of the appended item will be in L[0] */
+
+							/* Calculate position in item for append in S[0] */
+							pos_in_item -=
+							    tb->lbytes;
+
+							RFALSE(pos_in_item <= 0,
+							       "PAP-12125: no place for paste. pos_in_item=%d",
+							       pos_in_item);
+
+							/* Shift lnum[0] - 1 items in whole. Shift lbytes - 1 byte from item number lnum[0] */
+							leaf_shift_left(tb,
+									tb->
+									lnum[0],
+									tb->
+									lbytes);
+						}
+					}
+				} else {	/* appended item will be in L[0] in whole */
+
+					struct item_head *pasted;
+
+					if (!item_pos && op_is_left_mergeable(B_N_PKEY(tbS0, 0), tbS0->b_size)) {	/* if we paste into first item of S[0] and it is left mergable */
+						/* then increment pos_in_item by the size of the last item in L[0] */
+						pasted =
+						    B_N_PITEM_HEAD(tb->L[0],
+								   n - 1);
+						if (is_direntry_le_ih(pasted))
+							pos_in_item +=
+							    ih_entry_count
+							    (pasted);
+						else
+							pos_in_item +=
+							    ih_item_len(pasted);
+					}
+
+					/* Shift lnum[0] - 1 items in whole. Shift lbytes - 1 byte from item number lnum[0] */
+					ret_val =
+					    leaf_shift_left(tb, tb->lnum[0],
+							    tb->lbytes);
+					/* Append to body of item in L[0] */
+					bi.tb = tb;
+					bi.bi_bh = tb->L[0];
+					bi.bi_parent = tb->FL[0];
+					bi.bi_position =
+					    get_left_neighbor_position(tb, 0);
+					leaf_paste_in_buffer(&bi,
+							     n + item_pos -
+							     ret_val,
+							     pos_in_item,
+							     tb->insert_size[0],
+							     body, zeros_num);
+
+					/* if appended item is directory, paste entry */
+					pasted =
+					    B_N_PITEM_HEAD(tb->L[0],
+							   n + item_pos -
+							   ret_val);
+					if (is_direntry_le_ih(pasted))
+						leaf_paste_entries(bi.bi_bh,
+								   n +
+								   item_pos -
+								   ret_val,
+								   pos_in_item,
+								   1,
+								   (struct
+								    reiserfs_de_head
+								    *)body,
+								   body +
+								   DEH_SIZE,
+								   tb->
+								   insert_size
+								   [0]
+						    );
+					/* if appended item is indirect item, put unformatted node into un list */
+					if (is_indirect_le_ih(pasted))
+						set_ih_free_space(pasted, 0);
+					tb->insert_size[0] = 0;
+					zeros_num = 0;
+				}
+				break;
+			default:	/* cases d and t */
+				reiserfs_panic(tb->tb_sb,
+					       "PAP-12130: balance_leaf: lnum > 0: unexpectable mode: %s(%d)",
+					       (flag ==
+						M_DELETE) ? "DELETE" : ((flag ==
+									 M_CUT)
+									? "CUT"
+									:
+									"UNKNOWN"),
+					       flag);
 			}
-
-		    /* Shift lnum[0] - 1 items in whole. Shift lbytes - 1 byte from item number lnum[0] */
-		    ret_val = leaf_shift_left(tb,tb->lnum[0],tb->lbytes);
-		    /* Append to body of item in L[0] */
-		    bi.tb = tb;
-		    bi.bi_bh = tb->L[0];
-		    bi.bi_parent = tb->FL[0];
-		    bi.bi_position = get_left_neighbor_position (tb, 0);
-		    leaf_paste_in_buffer (&bi, n + item_pos - ret_val, pos_in_item, tb->insert_size[0],
-					  body, zeros_num);
-
-		    /* if appended item is directory, paste entry */
-		    pasted = B_N_PITEM_HEAD (tb->L[0], n + item_pos - ret_val);
-		    if (is_direntry_le_ih (pasted))
-			leaf_paste_entries (
-			    bi.bi_bh, n + item_pos - ret_val, pos_in_item, 1, 
-			    (struct reiserfs_de_head *)body, body + DEH_SIZE, tb->insert_size[0]
-			    );
-		    /* if appended item is indirect item, put unformatted node into un list */
-		    if (is_indirect_le_ih (pasted))
-			set_ih_free_space (pasted, 0);
-		    tb->insert_size[0] = 0;
-		    zeros_num = 0;
+		} else {
+			/* new item doesn't fall into L[0] */
+			leaf_shift_left(tb, tb->lnum[0], tb->lbytes);
 		}
-		break;
-	    default:    /* cases d and t */
-		reiserfs_panic (tb->tb_sb, "PAP-12130: balance_leaf: lnum > 0: unexpectable mode: %s(%d)",
-				(flag == M_DELETE) ? "DELETE" : ((flag == M_CUT) ? "CUT" : "UNKNOWN"), flag);
-	    }
-	} else { 
-	    /* new item doesn't fall into L[0] */
-	    leaf_shift_left(tb,tb->lnum[0],tb->lbytes);
 	}
-    }	/* tb->lnum[0] > 0 */
 
-    /* Calculate new item position */
-    item_pos -= ( tb->lnum[0] - (( tb->lbytes != -1 ) ? 1 : 0));
-
-    if ( tb->rnum[0] > 0 ) {
-	/* shift rnum[0] items from S[0] to the right neighbor R[0] */
-	n = B_NR_ITEMS(tbS0);
-	switch ( flag ) {
-
-	case M_INSERT:   /* insert item */
-	    if ( n - tb->rnum[0] < item_pos )
-	    { /* new item or its part falls to R[0] */
-		if ( item_pos == n - tb->rnum[0] + 1 && tb->rbytes != -1 )
-		{ /* part of new item falls into R[0] */
-		    loff_t old_key_comp, old_len, r_zeros_number;
-		    const char * r_body;
-		    int version;
-		    loff_t offset;
-
-		    leaf_shift_right(tb,tb->rnum[0]-1,-1);
-
-		    version = ih_version(ih);
-		    /* Remember key component and item length */
-                    old_key_comp = le_ih_k_offset( ih );
-		    old_len = ih_item_len(ih);
-
-		    /* Calculate key component and item length to insert into R[0] */
-                    offset = le_ih_k_offset( ih ) + ((old_len - tb->rbytes )<<(is_indirect_le_ih(ih)?tb->tb_sb->s_blocksize_bits - UNFM_P_SHIFT:0));
-                    set_le_ih_k_offset( ih, offset );
-		    put_ih_item_len( ih, tb->rbytes);
-		    /* Insert part of the item into R[0] */
-		    bi.tb = tb;
-		    bi.bi_bh = tb->R[0];
-		    bi.bi_parent = tb->FR[0];
-		    bi.bi_position = get_right_neighbor_position (tb, 0);
-		    if ( (old_len - tb->rbytes) > zeros_num ) {
-			r_zeros_number = 0;
-			r_body = body + (old_len - tb->rbytes) - zeros_num;
-		    }
-		    else {
-			r_body = body;
-			r_zeros_number = zeros_num - (old_len - tb->rbytes);
-			zeros_num -= r_zeros_number;
-		    }
-
-		    leaf_insert_into_buf (&bi, 0, ih, r_body, r_zeros_number);
-
-		    /* Replace right delimiting key by first key in R[0] */
-		    replace_key(tb, tb->CFR[0],tb->rkey[0],tb->R[0],0);
-
-		    /* Calculate key component and item length to insert into S[0] */
-                    set_le_ih_k_offset( ih, old_key_comp );
-		    put_ih_item_len( ih, old_len - tb->rbytes );
-
-		    tb->insert_size[0] -= tb->rbytes;
+	/* tb->lnum[0] > 0 */
+	/* Calculate new item position */
+	item_pos -= (tb->lnum[0] - ((tb->lbytes != -1) ? 1 : 0));
+
+	if (tb->rnum[0] > 0) {
+		/* shift rnum[0] items from S[0] to the right neighbor R[0] */
+		n = B_NR_ITEMS(tbS0);
+		switch (flag) {
+
+		case M_INSERT:	/* insert item */
+			if (n - tb->rnum[0] < item_pos) {	/* new item or its part falls to R[0] */
+				if (item_pos == n - tb->rnum[0] + 1 && tb->rbytes != -1) {	/* part of new item falls into R[0] */
+					loff_t old_key_comp, old_len,
+					    r_zeros_number;
+					const char *r_body;
+					int version;
+					loff_t offset;
+
+					leaf_shift_right(tb, tb->rnum[0] - 1,
+							 -1);
+
+					version = ih_version(ih);
+					/* Remember key component and item length */
+					old_key_comp = le_ih_k_offset(ih);
+					old_len = ih_item_len(ih);
+
+					/* Calculate key component and item length to insert into R[0] */
+					offset =
+					    le_ih_k_offset(ih) +
+					    ((old_len -
+					      tb->
+					      rbytes) << (is_indirect_le_ih(ih)
+							  ? tb->tb_sb->
+							  s_blocksize_bits -
+							  UNFM_P_SHIFT : 0));
+					set_le_ih_k_offset(ih, offset);
+					put_ih_item_len(ih, tb->rbytes);
+					/* Insert part of the item into R[0] */
+					bi.tb = tb;
+					bi.bi_bh = tb->R[0];
+					bi.bi_parent = tb->FR[0];
+					bi.bi_position =
+					    get_right_neighbor_position(tb, 0);
+					if ((old_len - tb->rbytes) > zeros_num) {
+						r_zeros_number = 0;
+						r_body =
+						    body + (old_len -
+							    tb->rbytes) -
+						    zeros_num;
+					} else {
+						r_body = body;
+						r_zeros_number =
+						    zeros_num - (old_len -
+								 tb->rbytes);
+						zeros_num -= r_zeros_number;
+					}
+
+					leaf_insert_into_buf(&bi, 0, ih, r_body,
+							     r_zeros_number);
+
+					/* Replace right delimiting key by first key in R[0] */
+					replace_key(tb, tb->CFR[0], tb->rkey[0],
+						    tb->R[0], 0);
+
+					/* Calculate key component and item length to insert into S[0] */
+					set_le_ih_k_offset(ih, old_key_comp);
+					put_ih_item_len(ih,
+							old_len - tb->rbytes);
+
+					tb->insert_size[0] -= tb->rbytes;
+
+				} else {	/* whole new item falls into R[0] */
+
+					/* Shift rnum[0]-1 items to R[0] */
+					ret_val =
+					    leaf_shift_right(tb,
+							     tb->rnum[0] - 1,
+							     tb->rbytes);
+					/* Insert new item into R[0] */
+					bi.tb = tb;
+					bi.bi_bh = tb->R[0];
+					bi.bi_parent = tb->FR[0];
+					bi.bi_position =
+					    get_right_neighbor_position(tb, 0);
+					leaf_insert_into_buf(&bi,
+							     item_pos - n +
+							     tb->rnum[0] - 1,
+							     ih, body,
+							     zeros_num);
+
+					if (item_pos - n + tb->rnum[0] - 1 == 0) {
+						replace_key(tb, tb->CFR[0],
+							    tb->rkey[0],
+							    tb->R[0], 0);
+
+					}
+					zeros_num = tb->insert_size[0] = 0;
+				}
+			} else {	/* new item or part of it doesn't fall into R[0] */
 
-		}
-		else /* whole new item falls into R[0] */
-		{					  
-		    /* Shift rnum[0]-1 items to R[0] */
-		    ret_val = leaf_shift_right(tb,tb->rnum[0]-1,tb->rbytes);
-		    /* Insert new item into R[0] */
-		    bi.tb = tb;
-		    bi.bi_bh = tb->R[0];
-		    bi.bi_parent = tb->FR[0];
-		    bi.bi_position = get_right_neighbor_position (tb, 0);
-		    leaf_insert_into_buf (&bi, item_pos - n + tb->rnum[0] - 1, ih, body, zeros_num);
-
-		    if ( item_pos - n + tb->rnum[0] - 1 == 0 ) {
-			replace_key(tb, tb->CFR[0],tb->rkey[0],tb->R[0],0);
-
-		    }
-		    zeros_num = tb->insert_size[0] = 0;
-		}
-	    }
-	    else /* new item or part of it doesn't fall into R[0] */
-	    {
-		leaf_shift_right(tb,tb->rnum[0],tb->rbytes);
-	    }
-	    break;
-
-	case M_PASTE:   /* append item */
-
-	    if ( n - tb->rnum[0] <= item_pos )  /* pasted item or part of it falls to R[0] */
-	    {
-		if ( item_pos == n - tb->rnum[0] && tb->rbytes != -1 )
-		{ /* we must shift the part of the appended item */
-		    if ( is_direntry_le_ih (B_N_PITEM_HEAD(tbS0, item_pos)))
-		    { /* we append to directory item */
-			int entry_count;
-
-			RFALSE( zeros_num,
-				"PAP-12145: invalid parameter in case of a directory");
-			entry_count = I_ENTRY_COUNT(B_N_PITEM_HEAD(tbS0, item_pos));
-			if ( entry_count - tb->rbytes < pos_in_item )
-			    /* new directory entry falls into R[0] */
-			{
-			    int paste_entry_position;
-
-			    RFALSE( tb->rbytes - 1 >= entry_count || 
-				    ! tb->insert_size[0],
-				    "PAP-12150: no enough of entries to shift to R[0]: rbytes=%d, entry_count=%d",
-				    tb->rbytes, entry_count);
-			    /* Shift rnum[0]-1 items in whole. Shift rbytes-1 directory entries from directory item number rnum[0] */
-			    leaf_shift_right(tb,tb->rnum[0],tb->rbytes - 1);
-			    /* Paste given directory entry to directory item */
-			    paste_entry_position = pos_in_item - entry_count + tb->rbytes - 1;
-			    bi.tb = tb;
-			    bi.bi_bh = tb->R[0];
-			    bi.bi_parent = tb->FR[0];
-			    bi.bi_position = get_right_neighbor_position (tb, 0);
-			    leaf_paste_in_buffer (&bi, 0, paste_entry_position,
-						  tb->insert_size[0],body,zeros_num);
-			    /* paste entry */
-			    leaf_paste_entries (
-				bi.bi_bh, 0, paste_entry_position, 1, (struct reiserfs_de_head *)body, 
-				body + DEH_SIZE, tb->insert_size[0]
-				);								
-						
-			    if ( paste_entry_position == 0 ) {
-				/* change delimiting keys */
-				replace_key(tb, tb->CFR[0],tb->rkey[0],tb->R[0],0);
-			    }
-
-			    tb->insert_size[0] = 0;
-			    pos_in_item++;
-			}
-			else /* new directory entry doesn't fall into R[0] */
-			{
-			    leaf_shift_right(tb,tb->rnum[0],tb->rbytes);
-			}
-		    }
-		    else /* regular object */
-		    {
-			int n_shift, n_rem, r_zeros_number;
-			const char * r_body;
-
-			/* Calculate number of bytes which must be shifted from appended item */
-			if ( (n_shift = tb->rbytes - tb->insert_size[0]) < 0 )
-			    n_shift = 0;
-
-			RFALSE(pos_in_item != ih_item_len(B_N_PITEM_HEAD (tbS0, item_pos)),
-			       "PAP-12155: invalid position to paste. ih_item_len=%d, pos_in_item=%d",
-                               pos_in_item, ih_item_len( B_N_PITEM_HEAD(tbS0,item_pos)));
-
-			leaf_shift_right(tb,tb->rnum[0],n_shift);
-			/* Calculate number of bytes which must remain in body after appending to R[0] */
-			if ( (n_rem = tb->insert_size[0] - tb->rbytes) < 0 )
-			    n_rem = 0;
-			
-			{
-			  int version;
-			  unsigned long temp_rem = n_rem;
-			  
-			  version = ih_version (B_N_PITEM_HEAD (tb->R[0],0));
-			  if (is_indirect_le_key(version,B_N_PKEY(tb->R[0],0))){
-			      temp_rem = n_rem << (tb->tb_sb->s_blocksize_bits -
-					 UNFM_P_SHIFT);
-			  }
-			  set_le_key_k_offset (version, B_N_PKEY(tb->R[0],0), 
-					       le_key_k_offset (version, B_N_PKEY(tb->R[0],0)) + temp_rem);
-			  set_le_key_k_offset (version, B_N_PDELIM_KEY(tb->CFR[0],tb->rkey[0]), 
-					       le_key_k_offset (version, B_N_PDELIM_KEY(tb->CFR[0],tb->rkey[0])) + temp_rem);
+				leaf_shift_right(tb, tb->rnum[0], tb->rbytes);
 			}
+			break;
+
+		case M_PASTE:	/* append item */
+
+			if (n - tb->rnum[0] <= item_pos) {	/* pasted item or part of it falls to R[0] */
+				if (item_pos == n - tb->rnum[0] && tb->rbytes != -1) {	/* we must shift the part of the appended item */
+					if (is_direntry_le_ih(B_N_PITEM_HEAD(tbS0, item_pos))) {	/* we append to directory item */
+						int entry_count;
+
+						RFALSE(zeros_num,
+						       "PAP-12145: invalid parameter in case of a directory");
+						entry_count =
+						    I_ENTRY_COUNT(B_N_PITEM_HEAD
+								  (tbS0,
+								   item_pos));
+						if (entry_count - tb->rbytes <
+						    pos_in_item)
+							/* new directory entry falls into R[0] */
+						{
+							int paste_entry_position;
+
+							RFALSE(tb->rbytes - 1 >=
+							       entry_count
+							       || !tb->
+							       insert_size[0],
+							       "PAP-12150: no enough of entries to shift to R[0]: rbytes=%d, entry_count=%d",
+							       tb->rbytes,
+							       entry_count);
+							/* Shift rnum[0]-1 items in whole. Shift rbytes-1 directory entries from directory item number rnum[0] */
+							leaf_shift_right(tb,
+									 tb->
+									 rnum
+									 [0],
+									 tb->
+									 rbytes
+									 - 1);
+							/* Paste given directory entry to directory item */
+							paste_entry_position =
+							    pos_in_item -
+							    entry_count +
+							    tb->rbytes - 1;
+							bi.tb = tb;
+							bi.bi_bh = tb->R[0];
+							bi.bi_parent =
+							    tb->FR[0];
+							bi.bi_position =
+							    get_right_neighbor_position
+							    (tb, 0);
+							leaf_paste_in_buffer
+							    (&bi, 0,
+							     paste_entry_position,
+							     tb->insert_size[0],
+							     body, zeros_num);
+							/* paste entry */
+							leaf_paste_entries(bi.
+									   bi_bh,
+									   0,
+									   paste_entry_position,
+									   1,
+									   (struct
+									    reiserfs_de_head
+									    *)
+									   body,
+									   body
+									   +
+									   DEH_SIZE,
+									   tb->
+									   insert_size
+									   [0]
+							    );
+
+							if (paste_entry_position
+							    == 0) {
+								/* change delimiting keys */
+								replace_key(tb,
+									    tb->
+									    CFR
+									    [0],
+									    tb->
+									    rkey
+									    [0],
+									    tb->
+									    R
+									    [0],
+									    0);
+							}
+
+							tb->insert_size[0] = 0;
+							pos_in_item++;
+						} else {	/* new directory entry doesn't fall into R[0] */
+
+							leaf_shift_right(tb,
+									 tb->
+									 rnum
+									 [0],
+									 tb->
+									 rbytes);
+						}
+					} else {	/* regular object */
+
+						int n_shift, n_rem,
+						    r_zeros_number;
+						const char *r_body;
+
+						/* Calculate number of bytes which must be shifted from appended item */
+						if ((n_shift =
+						     tb->rbytes -
+						     tb->insert_size[0]) < 0)
+							n_shift = 0;
+
+						RFALSE(pos_in_item !=
+						       ih_item_len
+						       (B_N_PITEM_HEAD
+							(tbS0, item_pos)),
+						       "PAP-12155: invalid position to paste. ih_item_len=%d, pos_in_item=%d",
+						       pos_in_item,
+						       ih_item_len
+						       (B_N_PITEM_HEAD
+							(tbS0, item_pos)));
+
+						leaf_shift_right(tb,
+								 tb->rnum[0],
+								 n_shift);
+						/* Calculate number of bytes which must remain in body after appending to R[0] */
+						if ((n_rem =
+						     tb->insert_size[0] -
+						     tb->rbytes) < 0)
+							n_rem = 0;
+
+						{
+							int version;
+							unsigned long temp_rem =
+							    n_rem;
+
+							version =
+							    ih_version
+							    (B_N_PITEM_HEAD
+							     (tb->R[0], 0));
+							if (is_indirect_le_key
+							    (version,
+							     B_N_PKEY(tb->R[0],
+								      0))) {
+								temp_rem =
+								    n_rem <<
+								    (tb->tb_sb->
+								     s_blocksize_bits
+								     -
+								     UNFM_P_SHIFT);
+							}
+							set_le_key_k_offset
+							    (version,
+							     B_N_PKEY(tb->R[0],
+								      0),
+							     le_key_k_offset
+							     (version,
+							      B_N_PKEY(tb->R[0],
+								       0)) +
+							     temp_rem);
+							set_le_key_k_offset
+							    (version,
+							     B_N_PDELIM_KEY(tb->
+									    CFR
+									    [0],
+									    tb->
+									    rkey
+									    [0]),
+							     le_key_k_offset
+							     (version,
+							      B_N_PDELIM_KEY
+							      (tb->CFR[0],
+							       tb->rkey[0])) +
+							     temp_rem);
+						}
 /*		  k_offset (B_N_PKEY(tb->R[0],0)) += n_rem;
 		  k_offset (B_N_PDELIM_KEY(tb->CFR[0],tb->rkey[0])) += n_rem;*/
-			do_balance_mark_internal_dirty (tb, tb->CFR[0], 0);
-
-			/* Append part of body into R[0] */
-			bi.tb = tb;
-			bi.bi_bh = tb->R[0];
-			bi.bi_parent = tb->FR[0];
-			bi.bi_position = get_right_neighbor_position (tb, 0);
-			if ( n_rem > zeros_num ) {
-			    r_zeros_number = 0;
-			    r_body = body + n_rem - zeros_num;
-			}
-			else {
-			    r_body = body;
-			    r_zeros_number = zeros_num - n_rem;
-			    zeros_num -= r_zeros_number;
-			}
-
-			leaf_paste_in_buffer(&bi, 0, n_shift, tb->insert_size[0] - n_rem, r_body, r_zeros_number);
-
-			if (is_indirect_le_ih (B_N_PITEM_HEAD(tb->R[0],0))) {
+						do_balance_mark_internal_dirty
+						    (tb, tb->CFR[0], 0);
+
+						/* Append part of body into R[0] */
+						bi.tb = tb;
+						bi.bi_bh = tb->R[0];
+						bi.bi_parent = tb->FR[0];
+						bi.bi_position =
+						    get_right_neighbor_position
+						    (tb, 0);
+						if (n_rem > zeros_num) {
+							r_zeros_number = 0;
+							r_body =
+							    body + n_rem -
+							    zeros_num;
+						} else {
+							r_body = body;
+							r_zeros_number =
+							    zeros_num - n_rem;
+							zeros_num -=
+							    r_zeros_number;
+						}
+
+						leaf_paste_in_buffer(&bi, 0,
+								     n_shift,
+								     tb->
+								     insert_size
+								     [0] -
+								     n_rem,
+								     r_body,
+								     r_zeros_number);
+
+						if (is_indirect_le_ih
+						    (B_N_PITEM_HEAD
+						     (tb->R[0], 0))) {
 #if 0
-			    RFALSE( n_rem,
-				    "PAP-12160: paste more than one unformatted node pointer");
+							RFALSE(n_rem,
+							       "PAP-12160: paste more than one unformatted node pointer");
 #endif
-			    set_ih_free_space (B_N_PITEM_HEAD(tb->R[0],0), 0);
-			}
-			tb->insert_size[0] = n_rem;
-			if ( ! n_rem )
-			    pos_in_item ++;
-		    }
-		}
-		else /* pasted item in whole falls into R[0] */
-		{
-		    struct item_head * pasted;
+							set_ih_free_space
+							    (B_N_PITEM_HEAD
+							     (tb->R[0], 0), 0);
+						}
+						tb->insert_size[0] = n_rem;
+						if (!n_rem)
+							pos_in_item++;
+					}
+				} else {	/* pasted item in whole falls into R[0] */
+
+					struct item_head *pasted;
+
+					ret_val =
+					    leaf_shift_right(tb, tb->rnum[0],
+							     tb->rbytes);
+					/* append item in R[0] */
+					if (pos_in_item >= 0) {
+						bi.tb = tb;
+						bi.bi_bh = tb->R[0];
+						bi.bi_parent = tb->FR[0];
+						bi.bi_position =
+						    get_right_neighbor_position
+						    (tb, 0);
+						leaf_paste_in_buffer(&bi,
+								     item_pos -
+								     n +
+								     tb->
+								     rnum[0],
+								     pos_in_item,
+								     tb->
+								     insert_size
+								     [0], body,
+								     zeros_num);
+					}
+
+					/* paste new entry, if item is directory item */
+					pasted =
+					    B_N_PITEM_HEAD(tb->R[0],
+							   item_pos - n +
+							   tb->rnum[0]);
+					if (is_direntry_le_ih(pasted)
+					    && pos_in_item >= 0) {
+						leaf_paste_entries(bi.bi_bh,
+								   item_pos -
+								   n +
+								   tb->rnum[0],
+								   pos_in_item,
+								   1,
+								   (struct
+								    reiserfs_de_head
+								    *)body,
+								   body +
+								   DEH_SIZE,
+								   tb->
+								   insert_size
+								   [0]
+						    );
+						if (!pos_in_item) {
+
+							RFALSE(item_pos - n +
+							       tb->rnum[0],
+							       "PAP-12165: directory item must be first item of node when pasting is in 0th position");
+
+							/* update delimiting keys */
+							replace_key(tb,
+								    tb->CFR[0],
+								    tb->rkey[0],
+								    tb->R[0],
+								    0);
+						}
+					}
+
+					if (is_indirect_le_ih(pasted))
+						set_ih_free_space(pasted, 0);
+					zeros_num = tb->insert_size[0] = 0;
+				}
+			} else {	/* new item doesn't fall into R[0] */
 
-		    ret_val = leaf_shift_right(tb,tb->rnum[0],tb->rbytes);
-		    /* append item in R[0] */
-		    if ( pos_in_item >= 0 ) {
-			bi.tb = tb;
-			bi.bi_bh = tb->R[0];
-			bi.bi_parent = tb->FR[0];
-			bi.bi_position = get_right_neighbor_position (tb, 0);
-			leaf_paste_in_buffer(&bi,item_pos - n + tb->rnum[0], pos_in_item,
-					     tb->insert_size[0],body, zeros_num);
-		    }
-
-		    /* paste new entry, if item is directory item */
-		    pasted = B_N_PITEM_HEAD(tb->R[0], item_pos - n + tb->rnum[0]);
-		    if (is_direntry_le_ih (pasted) && pos_in_item >= 0 ) {
-			leaf_paste_entries (
-			    bi.bi_bh, item_pos - n + tb->rnum[0], pos_in_item, 1, 
-			    (struct reiserfs_de_head *)body, body + DEH_SIZE, tb->insert_size[0]
-			    );
-			if ( ! pos_in_item ) {
-
-			    RFALSE( item_pos - n + tb->rnum[0],
-				    "PAP-12165: directory item must be first item of node when pasting is in 0th position");
-
-			    /* update delimiting keys */
-			    replace_key(tb, tb->CFR[0],tb->rkey[0],tb->R[0],0);
+				leaf_shift_right(tb, tb->rnum[0], tb->rbytes);
 			}
-		    }
-
-		    if (is_indirect_le_ih (pasted))
-			set_ih_free_space (pasted, 0);
-		    zeros_num = tb->insert_size[0] = 0;
+			break;
+		default:	/* cases d and t */
+			reiserfs_panic(tb->tb_sb,
+				       "PAP-12175: balance_leaf: rnum > 0: unexpectable mode: %s(%d)",
+				       (flag ==
+					M_DELETE) ? "DELETE" : ((flag ==
+								 M_CUT) ? "CUT"
+								: "UNKNOWN"),
+				       flag);
 		}
-	    }
-	    else /* new item doesn't fall into R[0] */
-	    {
-		leaf_shift_right(tb,tb->rnum[0],tb->rbytes);
-	    }
-	    break;
-	default:    /* cases d and t */
-	    reiserfs_panic (tb->tb_sb, "PAP-12175: balance_leaf: rnum > 0: unexpectable mode: %s(%d)",
-			    (flag == M_DELETE) ? "DELETE" : ((flag == M_CUT) ? "CUT" : "UNKNOWN"), flag);
-	}
-    
-    }	/* tb->rnum[0] > 0 */
-
-
-    RFALSE( tb->blknum[0] > 3,
-	    "PAP-12180: blknum can not be %d. It must be <= 3",  tb->blknum[0]);
-    RFALSE( tb->blknum[0] < 0,
-	    "PAP-12185: blknum can not be %d. It must be >= 0",  tb->blknum[0]);
-
-    /* if while adding to a node we discover that it is possible to split
-       it in two, and merge the left part into the left neighbor and the
-       right part into the right neighbor, eliminating the node */
-    if ( tb->blknum[0] == 0 ) { /* node S[0] is empty now */
-
-	RFALSE( ! tb->lnum[0] || ! tb->rnum[0],
-	        "PAP-12190: lnum and rnum must not be zero");
-	/* if insertion was done before 0-th position in R[0], right
-	   delimiting key of the tb->L[0]'s and left delimiting key are
-	   not set correctly */
-	if (tb->CFL[0]) {
-	    if (!tb->CFR[0])
-		reiserfs_panic (tb->tb_sb, "vs-12195: balance_leaf: CFR not initialized");
-	    copy_key (B_N_PDELIM_KEY (tb->CFL[0], tb->lkey[0]), B_N_PDELIM_KEY (tb->CFR[0], tb->rkey[0]));
-	    do_balance_mark_internal_dirty (tb, tb->CFL[0], 0);
-	}
-
-	reiserfs_invalidate_buffer(tb,tbS0);									
-	return 0;
-    }
-
-
-    /* Fill new nodes that appear in place of S[0] */
 
-    /* I am told that this copying is because we need an array to enable
-       the looping code. -Hans */
-    snum[0] = tb->s1num,
-	snum[1] = tb->s2num;
-    sbytes[0] = tb->s1bytes;
-    sbytes[1] = tb->s2bytes;
-    for( i = tb->blknum[0] - 2; i >= 0; i-- ) {
-
-	RFALSE( !snum[i], "PAP-12200: snum[%d] == %d. Must be > 0", i, snum[i]);
+	}
 
-	/* here we shift from S to S_new nodes */
+	/* tb->rnum[0] > 0 */
+	RFALSE(tb->blknum[0] > 3,
+	       "PAP-12180: blknum can not be %d. It must be <= 3",
+	       tb->blknum[0]);
+	RFALSE(tb->blknum[0] < 0,
+	       "PAP-12185: blknum can not be %d. It must be >= 0",
+	       tb->blknum[0]);
+
+	/* if while adding to a node we discover that it is possible to split
+	   it in two, and merge the left part into the left neighbor and the
+	   right part into the right neighbor, eliminating the node */
+	if (tb->blknum[0] == 0) {	/* node S[0] is empty now */
+
+		RFALSE(!tb->lnum[0] || !tb->rnum[0],
+		       "PAP-12190: lnum and rnum must not be zero");
+		/* if insertion was done before 0-th position in R[0], right
+		   delimiting key of the tb->L[0]'s and left delimiting key are
+		   not set correctly */
+		if (tb->CFL[0]) {
+			if (!tb->CFR[0])
+				reiserfs_panic(tb->tb_sb,
+					       "vs-12195: balance_leaf: CFR not initialized");
+			copy_key(B_N_PDELIM_KEY(tb->CFL[0], tb->lkey[0]),
+				 B_N_PDELIM_KEY(tb->CFR[0], tb->rkey[0]));
+			do_balance_mark_internal_dirty(tb, tb->CFL[0], 0);
+		}
 
-	S_new[i] = get_FEB(tb);
+		reiserfs_invalidate_buffer(tb, tbS0);
+		return 0;
+	}
 
-	/* initialized block type and tree level */
-        set_blkh_level( B_BLK_HEAD(S_new[i]), DISK_LEAF_NODE_LEVEL );
+	/* Fill new nodes that appear in place of S[0] */
+
+	/* I am told that this copying is because we need an array to enable
+	   the looping code. -Hans */
+	snum[0] = tb->s1num, snum[1] = tb->s2num;
+	sbytes[0] = tb->s1bytes;
+	sbytes[1] = tb->s2bytes;
+	for (i = tb->blknum[0] - 2; i >= 0; i--) {
+
+		RFALSE(!snum[i], "PAP-12200: snum[%d] == %d. Must be > 0", i,
+		       snum[i]);
+
+		/* here we shift from S to S_new nodes */
+
+		S_new[i] = get_FEB(tb);
+
+		/* initialized block type and tree level */
+		set_blkh_level(B_BLK_HEAD(S_new[i]), DISK_LEAF_NODE_LEVEL);
+
+		n = B_NR_ITEMS(tbS0);
+
+		switch (flag) {
+		case M_INSERT:	/* insert item */
+
+			if (n - snum[i] < item_pos) {	/* new item or it's part falls to first new node S_new[i] */
+				if (item_pos == n - snum[i] + 1 && sbytes[i] != -1) {	/* part of new item falls into S_new[i] */
+					int old_key_comp, old_len,
+					    r_zeros_number;
+					const char *r_body;
+					int version;
+
+					/* Move snum[i]-1 items from S[0] to S_new[i] */
+					leaf_move_items(LEAF_FROM_S_TO_SNEW, tb,
+							snum[i] - 1, -1,
+							S_new[i]);
+					/* Remember key component and item length */
+					version = ih_version(ih);
+					old_key_comp = le_ih_k_offset(ih);
+					old_len = ih_item_len(ih);
+
+					/* Calculate key component and item length to insert into S_new[i] */
+					set_le_ih_k_offset(ih,
+							   le_ih_k_offset(ih) +
+							   ((old_len -
+							     sbytes[i]) <<
+							    (is_indirect_le_ih
+							     (ih) ? tb->tb_sb->
+							     s_blocksize_bits -
+							     UNFM_P_SHIFT :
+							     0)));
+
+					put_ih_item_len(ih, sbytes[i]);
+
+					/* Insert part of the item into S_new[i] before 0-th item */
+					bi.tb = tb;
+					bi.bi_bh = S_new[i];
+					bi.bi_parent = NULL;
+					bi.bi_position = 0;
+
+					if ((old_len - sbytes[i]) > zeros_num) {
+						r_zeros_number = 0;
+						r_body =
+						    body + (old_len -
+							    sbytes[i]) -
+						    zeros_num;
+					} else {
+						r_body = body;
+						r_zeros_number =
+						    zeros_num - (old_len -
+								 sbytes[i]);
+						zeros_num -= r_zeros_number;
+					}
+
+					leaf_insert_into_buf(&bi, 0, ih, r_body,
+							     r_zeros_number);
+
+					/* Calculate key component and item length to insert into S[i] */
+					set_le_ih_k_offset(ih, old_key_comp);
+					put_ih_item_len(ih,
+							old_len - sbytes[i]);
+					tb->insert_size[0] -= sbytes[i];
+				} else {	/* whole new item falls into S_new[i] */
+
+					/* Shift snum[0] - 1 items to S_new[i] (sbytes[i] of split item) */
+					leaf_move_items(LEAF_FROM_S_TO_SNEW, tb,
+							snum[i] - 1, sbytes[i],
+							S_new[i]);
+
+					/* Insert new item into S_new[i] */
+					bi.tb = tb;
+					bi.bi_bh = S_new[i];
+					bi.bi_parent = NULL;
+					bi.bi_position = 0;
+					leaf_insert_into_buf(&bi,
+							     item_pos - n +
+							     snum[i] - 1, ih,
+							     body, zeros_num);
+
+					zeros_num = tb->insert_size[0] = 0;
+				}
+			}
 
+			else {	/* new item or it part don't falls into S_new[i] */
 
-	n = B_NR_ITEMS(tbS0);
-	
-	switch (flag) {
-	case M_INSERT:   /* insert item */
-
-	    if ( n - snum[i] < item_pos )
-	    { /* new item or it's part falls to first new node S_new[i]*/
-		if ( item_pos == n - snum[i] + 1 && sbytes[i] != -1 )
-		{ /* part of new item falls into S_new[i] */
-		    int old_key_comp, old_len, r_zeros_number;
-		    const char * r_body;
-		    int version;
-
-		    /* Move snum[i]-1 items from S[0] to S_new[i] */
-		    leaf_move_items (LEAF_FROM_S_TO_SNEW, tb, snum[i] - 1, -1, S_new[i]);
-		    /* Remember key component and item length */
-		    version = ih_version (ih);
-                    old_key_comp = le_ih_k_offset( ih );
-		    old_len = ih_item_len(ih);
-
-		    /* Calculate key component and item length to insert into S_new[i] */
-                    set_le_ih_k_offset( ih,
-                                le_ih_k_offset(ih) + ((old_len - sbytes[i] )<<(is_indirect_le_ih(ih)?tb->tb_sb->s_blocksize_bits - UNFM_P_SHIFT:0)) );
-
-		    put_ih_item_len( ih, sbytes[i] );
-
-		    /* Insert part of the item into S_new[i] before 0-th item */
-		    bi.tb = tb;
-		    bi.bi_bh = S_new[i];
-		    bi.bi_parent = NULL;
-		    bi.bi_position = 0;
-
-		    if ( (old_len - sbytes[i]) > zeros_num ) {
-			r_zeros_number = 0;
-			r_body = body + (old_len - sbytes[i]) - zeros_num;
-		    }
-		    else {
-			r_body = body;
-			r_zeros_number = zeros_num - (old_len - sbytes[i]);
-			zeros_num -= r_zeros_number;
-		    }
-
-		    leaf_insert_into_buf (&bi, 0, ih, r_body, r_zeros_number);
-
-		    /* Calculate key component and item length to insert into S[i] */
-                    set_le_ih_k_offset( ih, old_key_comp );
-		    put_ih_item_len( ih, old_len - sbytes[i] );
-		    tb->insert_size[0] -= sbytes[i];
-		}
-		else /* whole new item falls into S_new[i] */
-		{
-		    /* Shift snum[0] - 1 items to S_new[i] (sbytes[i] of split item) */
-		    leaf_move_items (LEAF_FROM_S_TO_SNEW, tb, snum[i] - 1, sbytes[i], S_new[i]);
-
-		    /* Insert new item into S_new[i] */
-		    bi.tb = tb;
-		    bi.bi_bh = S_new[i];
-		    bi.bi_parent = NULL;
-		    bi.bi_position = 0;
-		    leaf_insert_into_buf (&bi, item_pos - n + snum[i] - 1, ih, body, zeros_num);
-
-		    zeros_num = tb->insert_size[0] = 0;
-		}
-	    }
-
-	    else /* new item or it part don't falls into S_new[i] */
-	    {
-		leaf_move_items (LEAF_FROM_S_TO_SNEW, tb, snum[i], sbytes[i], S_new[i]);
-	    }
-	    break;
-
-	case M_PASTE:   /* append item */
-
-	    if ( n - snum[i] <= item_pos )  /* pasted item or part if it falls to S_new[i] */
-	    {
-		if ( item_pos == n - snum[i] && sbytes[i] != -1 )
-		{ /* we must shift part of the appended item */
-		    struct item_head * aux_ih;
-
-		    RFALSE( ih, "PAP-12210: ih must be 0");
-
-		    if ( is_direntry_le_ih (aux_ih = B_N_PITEM_HEAD(tbS0,item_pos))) {
-			/* we append to directory item */
-
-			int entry_count;
-		
-			entry_count = ih_entry_count(aux_ih);
-
-			if ( entry_count - sbytes[i] < pos_in_item  && pos_in_item <= entry_count ) {
-			    /* new directory entry falls into S_new[i] */
-		  
-			    RFALSE( ! tb->insert_size[0],
-				    "PAP-12215: insert_size is already 0");
-			    RFALSE( sbytes[i] - 1 >= entry_count,
-				    "PAP-12220: there are no so much entries (%d), only %d",
-				    sbytes[i] - 1, entry_count);
-
-			    /* Shift snum[i]-1 items in whole. Shift sbytes[i] directory entries from directory item number snum[i] */
-			    leaf_move_items (LEAF_FROM_S_TO_SNEW, tb, snum[i], sbytes[i]-1, S_new[i]);
-			    /* Paste given directory entry to directory item */
-			    bi.tb = tb;
-			    bi.bi_bh = S_new[i];
-			    bi.bi_parent = NULL;
-			    bi.bi_position = 0;
-			    leaf_paste_in_buffer (&bi, 0, pos_in_item - entry_count + sbytes[i] - 1,
-						  tb->insert_size[0], body,zeros_num);
-			    /* paste new directory entry */
-			    leaf_paste_entries (
-				bi.bi_bh, 0, pos_in_item - entry_count + sbytes[i] - 1,
-				1, (struct reiserfs_de_head *)body, body + DEH_SIZE,
-				tb->insert_size[0]
-				);
-			    tb->insert_size[0] = 0;
-			    pos_in_item++;
-			} else { /* new directory entry doesn't fall into S_new[i] */
-			    leaf_move_items (LEAF_FROM_S_TO_SNEW, tb, snum[i], sbytes[i], S_new[i]);
+				leaf_move_items(LEAF_FROM_S_TO_SNEW, tb,
+						snum[i], sbytes[i], S_new[i]);
 			}
-		    }
-		    else /* regular object */
-		    {
-			int n_shift, n_rem, r_zeros_number;
-			const char * r_body;
-
-			RFALSE( pos_in_item != ih_item_len(B_N_PITEM_HEAD(tbS0,item_pos)) ||
-			        tb->insert_size[0] <= 0,
-			        "PAP-12225: item too short or insert_size <= 0");
-
-			/* Calculate number of bytes which must be shifted from appended item */
-			n_shift = sbytes[i] - tb->insert_size[0];
-			if ( n_shift < 0 )
-			    n_shift = 0;
-			leaf_move_items (LEAF_FROM_S_TO_SNEW, tb, snum[i], n_shift, S_new[i]);
-
-			/* Calculate number of bytes which must remain in body after append to S_new[i] */
-			n_rem = tb->insert_size[0] - sbytes[i];
-			if ( n_rem < 0 )
-			    n_rem = 0;
-			/* Append part of body into S_new[0] */
-			bi.tb = tb;
-			bi.bi_bh = S_new[i];
-			bi.bi_parent = NULL;
-			bi.bi_position = 0;
+			break;
+
+		case M_PASTE:	/* append item */
+
+			if (n - snum[i] <= item_pos) {	/* pasted item or part if it falls to S_new[i] */
+				if (item_pos == n - snum[i] && sbytes[i] != -1) {	/* we must shift part of the appended item */
+					struct item_head *aux_ih;
+
+					RFALSE(ih, "PAP-12210: ih must be 0");
+
+					if (is_direntry_le_ih
+					    (aux_ih =
+					     B_N_PITEM_HEAD(tbS0, item_pos))) {
+						/* we append to directory item */
+
+						int entry_count;
+
+						entry_count =
+						    ih_entry_count(aux_ih);
+
+						if (entry_count - sbytes[i] <
+						    pos_in_item
+						    && pos_in_item <=
+						    entry_count) {
+							/* new directory entry falls into S_new[i] */
+
+							RFALSE(!tb->
+							       insert_size[0],
+							       "PAP-12215: insert_size is already 0");
+							RFALSE(sbytes[i] - 1 >=
+							       entry_count,
+							       "PAP-12220: there are no so much entries (%d), only %d",
+							       sbytes[i] - 1,
+							       entry_count);
+
+							/* Shift snum[i]-1 items in whole. Shift sbytes[i] directory entries from directory item number snum[i] */
+							leaf_move_items
+							    (LEAF_FROM_S_TO_SNEW,
+							     tb, snum[i],
+							     sbytes[i] - 1,
+							     S_new[i]);
+							/* Paste given directory entry to directory item */
+							bi.tb = tb;
+							bi.bi_bh = S_new[i];
+							bi.bi_parent = NULL;
+							bi.bi_position = 0;
+							leaf_paste_in_buffer
+							    (&bi, 0,
+							     pos_in_item -
+							     entry_count +
+							     sbytes[i] - 1,
+							     tb->insert_size[0],
+							     body, zeros_num);
+							/* paste new directory entry */
+							leaf_paste_entries(bi.
+									   bi_bh,
+									   0,
+									   pos_in_item
+									   -
+									   entry_count
+									   +
+									   sbytes
+									   [i] -
+									   1, 1,
+									   (struct
+									    reiserfs_de_head
+									    *)
+									   body,
+									   body
+									   +
+									   DEH_SIZE,
+									   tb->
+									   insert_size
+									   [0]
+							    );
+							tb->insert_size[0] = 0;
+							pos_in_item++;
+						} else {	/* new directory entry doesn't fall into S_new[i] */
+							leaf_move_items
+							    (LEAF_FROM_S_TO_SNEW,
+							     tb, snum[i],
+							     sbytes[i],
+							     S_new[i]);
+						}
+					} else {	/* regular object */
+
+						int n_shift, n_rem,
+						    r_zeros_number;
+						const char *r_body;
+
+						RFALSE(pos_in_item !=
+						       ih_item_len
+						       (B_N_PITEM_HEAD
+							(tbS0, item_pos))
+						       || tb->insert_size[0] <=
+						       0,
+						       "PAP-12225: item too short or insert_size <= 0");
+
+						/* Calculate number of bytes which must be shifted from appended item */
+						n_shift =
+						    sbytes[i] -
+						    tb->insert_size[0];
+						if (n_shift < 0)
+							n_shift = 0;
+						leaf_move_items
+						    (LEAF_FROM_S_TO_SNEW, tb,
+						     snum[i], n_shift,
+						     S_new[i]);
+
+						/* Calculate number of bytes which must remain in body after append to S_new[i] */
+						n_rem =
+						    tb->insert_size[0] -
+						    sbytes[i];
+						if (n_rem < 0)
+							n_rem = 0;
+						/* Append part of body into S_new[0] */
+						bi.tb = tb;
+						bi.bi_bh = S_new[i];
+						bi.bi_parent = NULL;
+						bi.bi_position = 0;
+
+						if (n_rem > zeros_num) {
+							r_zeros_number = 0;
+							r_body =
+							    body + n_rem -
+							    zeros_num;
+						} else {
+							r_body = body;
+							r_zeros_number =
+							    zeros_num - n_rem;
+							zeros_num -=
+							    r_zeros_number;
+						}
+
+						leaf_paste_in_buffer(&bi, 0,
+								     n_shift,
+								     tb->
+								     insert_size
+								     [0] -
+								     n_rem,
+								     r_body,
+								     r_zeros_number);
+						{
+							struct item_head *tmp;
+
+							tmp =
+							    B_N_PITEM_HEAD(S_new
+									   [i],
+									   0);
+							if (is_indirect_le_ih
+							    (tmp)) {
+								set_ih_free_space
+								    (tmp, 0);
+								set_le_ih_k_offset
+								    (tmp,
+								     le_ih_k_offset
+								     (tmp) +
+								     (n_rem <<
+								      (tb->
+								       tb_sb->
+								       s_blocksize_bits
+								       -
+								       UNFM_P_SHIFT)));
+							} else {
+								set_le_ih_k_offset
+								    (tmp,
+								     le_ih_k_offset
+								     (tmp) +
+								     n_rem);
+							}
+						}
+
+						tb->insert_size[0] = n_rem;
+						if (!n_rem)
+							pos_in_item++;
+					}
+				} else
+					/* item falls wholly into S_new[i] */
+				{
+					int ret_val;
+					struct item_head *pasted;
 
-			if ( n_rem > zeros_num ) {
-			    r_zeros_number = 0;
-			    r_body = body + n_rem - zeros_num;
-			}
-			else {
-			    r_body = body;
-			    r_zeros_number = zeros_num - n_rem;
-			    zeros_num -= r_zeros_number;
+#ifdef CONFIG_REISERFS_CHECK
+					struct item_head *ih =
+					    B_N_PITEM_HEAD(tbS0, item_pos);
+
+					if (!is_direntry_le_ih(ih)
+					    && (pos_in_item != ih_item_len(ih)
+						|| tb->insert_size[0] <= 0))
+						reiserfs_panic(tb->tb_sb,
+							       "PAP-12235: balance_leaf: pos_in_item must be equal to ih_item_len");
+#endif				/* CONFIG_REISERFS_CHECK */
+
+					ret_val =
+					    leaf_move_items(LEAF_FROM_S_TO_SNEW,
+							    tb, snum[i],
+							    sbytes[i],
+							    S_new[i]);
+
+					RFALSE(ret_val,
+					       "PAP-12240: unexpected value returned by leaf_move_items (%d)",
+					       ret_val);
+
+					/* paste into item */
+					bi.tb = tb;
+					bi.bi_bh = S_new[i];
+					bi.bi_parent = NULL;
+					bi.bi_position = 0;
+					leaf_paste_in_buffer(&bi,
+							     item_pos - n +
+							     snum[i],
+							     pos_in_item,
+							     tb->insert_size[0],
+							     body, zeros_num);
+
+					pasted =
+					    B_N_PITEM_HEAD(S_new[i],
+							   item_pos - n +
+							   snum[i]);
+					if (is_direntry_le_ih(pasted)) {
+						leaf_paste_entries(bi.bi_bh,
+								   item_pos -
+								   n + snum[i],
+								   pos_in_item,
+								   1,
+								   (struct
+								    reiserfs_de_head
+								    *)body,
+								   body +
+								   DEH_SIZE,
+								   tb->
+								   insert_size
+								   [0]
+						    );
+					}
+
+					/* if we paste to indirect item update ih_free_space */
+					if (is_indirect_le_ih(pasted))
+						set_ih_free_space(pasted, 0);
+					zeros_num = tb->insert_size[0] = 0;
+				}
 			}
 
-			leaf_paste_in_buffer(&bi, 0, n_shift, tb->insert_size[0]-n_rem, r_body,r_zeros_number);
-			{
-			    struct item_head * tmp;
-
-			    tmp = B_N_PITEM_HEAD(S_new[i],0);
-			    if (is_indirect_le_ih (tmp)) {
-				set_ih_free_space (tmp, 0);
-				set_le_ih_k_offset( tmp, le_ih_k_offset(tmp) + 
-					            (n_rem << (tb->tb_sb->s_blocksize_bits - UNFM_P_SHIFT)));
-			    } else {
-				set_le_ih_k_offset( tmp, le_ih_k_offset(tmp) + 
-				                    n_rem );
-			    }
-			}
+			else {	/* pasted item doesn't fall into S_new[i] */
 
-			tb->insert_size[0] = n_rem;
-			if ( ! n_rem )
-			    pos_in_item++;
-		    }
+				leaf_move_items(LEAF_FROM_S_TO_SNEW, tb,
+						snum[i], sbytes[i], S_new[i]);
+			}
+			break;
+		default:	/* cases d and t */
+			reiserfs_panic(tb->tb_sb,
+				       "PAP-12245: balance_leaf: blknum > 2: unexpectable mode: %s(%d)",
+				       (flag ==
+					M_DELETE) ? "DELETE" : ((flag ==
+								 M_CUT) ? "CUT"
+								: "UNKNOWN"),
+				       flag);
 		}
-		else
-		    /* item falls wholly into S_new[i] */
-		{
-		    int ret_val;
-		    struct item_head * pasted;
 
-#ifdef CONFIG_REISERFS_CHECK
-		    struct item_head * ih = B_N_PITEM_HEAD(tbS0,item_pos);
-
-		    if ( ! is_direntry_le_ih(ih) && (pos_in_item != ih_item_len(ih) ||
-						     tb->insert_size[0] <= 0) )
-			reiserfs_panic (tb->tb_sb, "PAP-12235: balance_leaf: pos_in_item must be equal to ih_item_len");
-#endif /* CONFIG_REISERFS_CHECK */
-
-		    ret_val = leaf_move_items (LEAF_FROM_S_TO_SNEW, tb, snum[i], sbytes[i], S_new[i]);
-
-		    RFALSE( ret_val,
-			    "PAP-12240: unexpected value returned by leaf_move_items (%d)",
-			    ret_val);
-
-		    /* paste into item */
-		    bi.tb = tb;
-		    bi.bi_bh = S_new[i];
-		    bi.bi_parent = NULL;
-		    bi.bi_position = 0;
-		    leaf_paste_in_buffer(&bi, item_pos - n + snum[i], pos_in_item, tb->insert_size[0], body, zeros_num);
-
-		    pasted = B_N_PITEM_HEAD(S_new[i], item_pos - n + snum[i]);
-		    if (is_direntry_le_ih (pasted))
-		    {
-			leaf_paste_entries (
-			    bi.bi_bh, item_pos - n + snum[i], pos_in_item, 1, 
-			    (struct reiserfs_de_head *)body, body + DEH_SIZE, tb->insert_size[0]
-			    );
-		    }
-
-		    /* if we paste to indirect item update ih_free_space */
-		    if (is_indirect_le_ih (pasted))
-			set_ih_free_space (pasted, 0);
-		    zeros_num = tb->insert_size[0] = 0;
-		}
-	    }
-
-	    else /* pasted item doesn't fall into S_new[i] */
-	    {
-		leaf_move_items (LEAF_FROM_S_TO_SNEW, tb, snum[i], sbytes[i], S_new[i]);
-	    }
-	    break;
-	default:    /* cases d and t */
-	    reiserfs_panic (tb->tb_sb, "PAP-12245: balance_leaf: blknum > 2: unexpectable mode: %s(%d)",
-			    (flag == M_DELETE) ? "DELETE" : ((flag == M_CUT) ? "CUT" : "UNKNOWN"), flag);
+		memcpy(insert_key + i, B_N_PKEY(S_new[i], 0), KEY_SIZE);
+		insert_ptr[i] = S_new[i];
+
+		RFALSE(!buffer_journaled(S_new[i])
+		       || buffer_journal_dirty(S_new[i])
+		       || buffer_dirty(S_new[i]), "PAP-12247: S_new[%d] : (%b)",
+		       i, S_new[i]);
 	}
 
-	memcpy (insert_key + i,B_N_PKEY(S_new[i],0),KEY_SIZE);
-	insert_ptr[i] = S_new[i];
-
-	RFALSE (!buffer_journaled (S_new [i]) || buffer_journal_dirty (S_new [i]) ||
-		buffer_dirty (S_new [i]),
-		"PAP-12247: S_new[%d] : (%b)", i, S_new[i]);
-    }
-
-    /* if the affected item was not wholly shifted then we perform all necessary operations on that part or whole of the
-       affected item which remains in S */
-    if ( 0 <= item_pos && item_pos < tb->s0num )
-    { /* if we must insert or append into buffer S[0] */
-
-	switch (flag)
-	{
-	case M_INSERT:   /* insert item into S[0] */
-	    bi.tb = tb;
-	    bi.bi_bh = tbS0;
-	    bi.bi_parent = PATH_H_PPARENT (tb->tb_path, 0);
-	    bi.bi_position = PATH_H_POSITION (tb->tb_path, 1);
-	    leaf_insert_into_buf (&bi, item_pos, ih, body, zeros_num);
-
-	    /* If we insert the first key change the delimiting key */
-	    if( item_pos == 0 ) {
-		if (tb->CFL[0]) /* can be 0 in reiserfsck */
-		    replace_key(tb, tb->CFL[0], tb->lkey[0],tbS0,0);
-
-	    }
-	    break;
-
-	case M_PASTE: {  /* append item in S[0] */
-	    struct item_head * pasted;
-
-	    pasted = B_N_PITEM_HEAD (tbS0, item_pos);
-	    /* when directory, may be new entry already pasted */
-	    if (is_direntry_le_ih (pasted)) {
-		if ( pos_in_item >= 0 &&
-		    pos_in_item <= ih_entry_count(pasted) ) {
-
-		    RFALSE( ! tb->insert_size[0], 
-			    "PAP-12260: insert_size is 0 already");
-
-		    /* prepare space */
-		    bi.tb = tb;
-		    bi.bi_bh = tbS0;
-		    bi.bi_parent = PATH_H_PPARENT (tb->tb_path, 0);
-		    bi.bi_position = PATH_H_POSITION (tb->tb_path, 1);
-		    leaf_paste_in_buffer(&bi, item_pos, pos_in_item, tb->insert_size[0], body, zeros_num);
-
-		    /* paste entry */
-		    leaf_paste_entries (
-			bi.bi_bh, item_pos, pos_in_item, 1, (struct reiserfs_de_head *)body,
-			body + DEH_SIZE, tb->insert_size[0]
-			);
-		    if ( ! item_pos && ! pos_in_item ) {
-			RFALSE( !tb->CFL[0] || !tb->L[0], 
-				"PAP-12270: CFL[0]/L[0] must be specified");
-			if (tb->CFL[0]) {
-			    replace_key(tb, tb->CFL[0], tb->lkey[0],tbS0,0);
+	/* if the affected item was not wholly shifted then we perform all necessary operations on that part or whole of the
+	   affected item which remains in S */
+	if (0 <= item_pos && item_pos < tb->s0num) {	/* if we must insert or append into buffer S[0] */
+
+		switch (flag) {
+		case M_INSERT:	/* insert item into S[0] */
+			bi.tb = tb;
+			bi.bi_bh = tbS0;
+			bi.bi_parent = PATH_H_PPARENT(tb->tb_path, 0);
+			bi.bi_position = PATH_H_POSITION(tb->tb_path, 1);
+			leaf_insert_into_buf(&bi, item_pos, ih, body,
+					     zeros_num);
+
+			/* If we insert the first key change the delimiting key */
+			if (item_pos == 0) {
+				if (tb->CFL[0])	/* can be 0 in reiserfsck */
+					replace_key(tb, tb->CFL[0], tb->lkey[0],
+						    tbS0, 0);
 
 			}
-		    }
-		    tb->insert_size[0] = 0;
-		}
-	    } else { /* regular object */
-		if ( pos_in_item == ih_item_len(pasted) ) {
-
-		    RFALSE( tb->insert_size[0] <= 0,
-			    "PAP-12275: insert size must not be %d",
-                            tb->insert_size[0]);
-		    bi.tb = tb;
-		    bi.bi_bh = tbS0;
-		    bi.bi_parent = PATH_H_PPARENT (tb->tb_path, 0);
-		    bi.bi_position = PATH_H_POSITION (tb->tb_path, 1);
-		    leaf_paste_in_buffer (&bi, item_pos, pos_in_item, tb->insert_size[0], body, zeros_num);
-
-		    if (is_indirect_le_ih (pasted)) {
+			break;
+
+		case M_PASTE:{	/* append item in S[0] */
+				struct item_head *pasted;
+
+				pasted = B_N_PITEM_HEAD(tbS0, item_pos);
+				/* when directory, may be new entry already pasted */
+				if (is_direntry_le_ih(pasted)) {
+					if (pos_in_item >= 0 &&
+					    pos_in_item <=
+					    ih_entry_count(pasted)) {
+
+						RFALSE(!tb->insert_size[0],
+						       "PAP-12260: insert_size is 0 already");
+
+						/* prepare space */
+						bi.tb = tb;
+						bi.bi_bh = tbS0;
+						bi.bi_parent =
+						    PATH_H_PPARENT(tb->tb_path,
+								   0);
+						bi.bi_position =
+						    PATH_H_POSITION(tb->tb_path,
+								    1);
+						leaf_paste_in_buffer(&bi,
+								     item_pos,
+								     pos_in_item,
+								     tb->
+								     insert_size
+								     [0], body,
+								     zeros_num);
+
+						/* paste entry */
+						leaf_paste_entries(bi.bi_bh,
+								   item_pos,
+								   pos_in_item,
+								   1,
+								   (struct
+								    reiserfs_de_head
+								    *)body,
+								   body +
+								   DEH_SIZE,
+								   tb->
+								   insert_size
+								   [0]
+						    );
+						if (!item_pos && !pos_in_item) {
+							RFALSE(!tb->CFL[0]
+							       || !tb->L[0],
+							       "PAP-12270: CFL[0]/L[0] must be specified");
+							if (tb->CFL[0]) {
+								replace_key(tb,
+									    tb->
+									    CFL
+									    [0],
+									    tb->
+									    lkey
+									    [0],
+									    tbS0,
+									    0);
+
+							}
+						}
+						tb->insert_size[0] = 0;
+					}
+				} else {	/* regular object */
+					if (pos_in_item == ih_item_len(pasted)) {
+
+						RFALSE(tb->insert_size[0] <= 0,
+						       "PAP-12275: insert size must not be %d",
+						       tb->insert_size[0]);
+						bi.tb = tb;
+						bi.bi_bh = tbS0;
+						bi.bi_parent =
+						    PATH_H_PPARENT(tb->tb_path,
+								   0);
+						bi.bi_position =
+						    PATH_H_POSITION(tb->tb_path,
+								    1);
+						leaf_paste_in_buffer(&bi,
+								     item_pos,
+								     pos_in_item,
+								     tb->
+								     insert_size
+								     [0], body,
+								     zeros_num);
+
+						if (is_indirect_le_ih(pasted)) {
 #if 0
-			RFALSE( tb->insert_size[0] != UNFM_P_SIZE,
-				"PAP-12280: insert_size for indirect item must be %d, not %d",
-				UNFM_P_SIZE, tb->insert_size[0]);
+							RFALSE(tb->
+							       insert_size[0] !=
+							       UNFM_P_SIZE,
+							       "PAP-12280: insert_size for indirect item must be %d, not %d",
+							       UNFM_P_SIZE,
+							       tb->
+							       insert_size[0]);
 #endif
-			set_ih_free_space (pasted, 0);
-		    }
-		    tb->insert_size[0] = 0;
-		}
-
+							set_ih_free_space
+							    (pasted, 0);
+						}
+						tb->insert_size[0] = 0;
+					}
 #ifdef CONFIG_REISERFS_CHECK
-		else {
-		    if ( tb->insert_size[0] ) {
-			print_cur_tb ("12285");
-			reiserfs_panic (tb->tb_sb, "PAP-12285: balance_leaf: insert_size must be 0 (%d)", tb->insert_size[0]);
-		    }
+					else {
+						if (tb->insert_size[0]) {
+							print_cur_tb("12285");
+							reiserfs_panic(tb->
+								       tb_sb,
+								       "PAP-12285: balance_leaf: insert_size must be 0 (%d)",
+								       tb->
+								       insert_size
+								       [0]);
+						}
+					}
+#endif				/* CONFIG_REISERFS_CHECK */
+
+				}
+			}	/* case M_PASTE: */
 		}
-#endif /* CONFIG_REISERFS_CHECK */
-	    
-	    }
-	} /* case M_PASTE: */
 	}
-    }
-
 #ifdef CONFIG_REISERFS_CHECK
-    if ( flag == M_PASTE && tb->insert_size[0] ) {
-	print_cur_tb ("12290");
-	reiserfs_panic (tb->tb_sb, "PAP-12290: balance_leaf: insert_size is still not 0 (%d)", tb->insert_size[0]);
-    }
-#endif /* CONFIG_REISERFS_CHECK */
-
-    return 0;
-} /* Leaf level of the tree is balanced (end of balance_leaf) */
-
+	if (flag == M_PASTE && tb->insert_size[0]) {
+		print_cur_tb("12290");
+		reiserfs_panic(tb->tb_sb,
+			       "PAP-12290: balance_leaf: insert_size is still not 0 (%d)",
+			       tb->insert_size[0]);
+	}
+#endif				/* CONFIG_REISERFS_CHECK */
 
+	return 0;
+}				/* Leaf level of the tree is balanced (end of balance_leaf) */
 
 /* Make empty node */
-void make_empty_node (struct buffer_info * bi)
+void make_empty_node(struct buffer_info *bi)
 {
-    struct block_head * blkh;
+	struct block_head *blkh;
 
-    RFALSE( bi->bi_bh == NULL, "PAP-12295: pointer to the buffer is NULL");
+	RFALSE(bi->bi_bh == NULL, "PAP-12295: pointer to the buffer is NULL");
 
-    blkh = B_BLK_HEAD(bi->bi_bh);
-    set_blkh_nr_item( blkh, 0 );
-    set_blkh_free_space( blkh, MAX_CHILD_SIZE(bi->bi_bh) );
+	blkh = B_BLK_HEAD(bi->bi_bh);
+	set_blkh_nr_item(blkh, 0);
+	set_blkh_free_space(blkh, MAX_CHILD_SIZE(bi->bi_bh));
 
-    if (bi->bi_parent)
-	B_N_CHILD (bi->bi_parent, bi->bi_position)->dc_size = 0; /* Endian safe if 0 */
+	if (bi->bi_parent)
+		B_N_CHILD(bi->bi_parent, bi->bi_position)->dc_size = 0;	/* Endian safe if 0 */
 }
 
-
 /* Get first empty buffer */
-struct buffer_head * get_FEB (struct tree_balance * tb)
+struct buffer_head *get_FEB(struct tree_balance *tb)
 {
-    int i;
-    struct buffer_head * first_b;
-    struct buffer_info bi;
-
-    for (i = 0; i < MAX_FEB_SIZE; i ++)
-	if (tb->FEB[i] != 0)
-	    break;
-
-    if (i == MAX_FEB_SIZE)
-	reiserfs_panic(tb->tb_sb, "vs-12300: get_FEB: FEB list is empty");
-
-    bi.tb = tb;
-    bi.bi_bh = first_b = tb->FEB[i];
-    bi.bi_parent = NULL;
-    bi.bi_position = 0;
-    make_empty_node (&bi);
-    set_buffer_uptodate(first_b);
-    tb->FEB[i] = NULL;
-    tb->used[i] = first_b;
-
-    return(first_b);
-}
+	int i;
+	struct buffer_head *first_b;
+	struct buffer_info bi;
 
+	for (i = 0; i < MAX_FEB_SIZE; i++)
+		if (tb->FEB[i] != 0)
+			break;
+
+	if (i == MAX_FEB_SIZE)
+		reiserfs_panic(tb->tb_sb,
+			       "vs-12300: get_FEB: FEB list is empty");
+
+	bi.tb = tb;
+	bi.bi_bh = first_b = tb->FEB[i];
+	bi.bi_parent = NULL;
+	bi.bi_position = 0;
+	make_empty_node(&bi);
+	set_buffer_uptodate(first_b);
+	tb->FEB[i] = NULL;
+	tb->used[i] = first_b;
+
+	return (first_b);
+}
 
 /* This is now used because reiserfs_free_block has to be able to
 ** schedule.
 */
-static void store_thrown (struct tree_balance * tb, struct buffer_head * bh)
+static void store_thrown(struct tree_balance *tb, struct buffer_head *bh)
 {
-    int i;
-
-    if (buffer_dirty (bh))
-      reiserfs_warning (tb->tb_sb, "store_thrown deals with dirty buffer");
-    for (i = 0; i < sizeof (tb->thrown)/sizeof (tb->thrown[0]); i ++)
-	if (!tb->thrown[i]) {
-	    tb->thrown[i] = bh;
-	    get_bh(bh) ; /* free_thrown puts this */
-	    return;
-	}
-    reiserfs_warning (tb->tb_sb, "store_thrown: too many thrown buffers");
+	int i;
+
+	if (buffer_dirty(bh))
+		reiserfs_warning(tb->tb_sb,
+				 "store_thrown deals with dirty buffer");
+	for (i = 0; i < sizeof(tb->thrown) / sizeof(tb->thrown[0]); i++)
+		if (!tb->thrown[i]) {
+			tb->thrown[i] = bh;
+			get_bh(bh);	/* free_thrown puts this */
+			return;
+		}
+	reiserfs_warning(tb->tb_sb, "store_thrown: too many thrown buffers");
 }
 
-static void free_thrown(struct tree_balance *tb) {
-    int i ;
-    b_blocknr_t blocknr ;
-    for (i = 0; i < sizeof (tb->thrown)/sizeof (tb->thrown[0]); i++) {
-	if (tb->thrown[i]) {
-	    blocknr = tb->thrown[i]->b_blocknr ;
-	    if (buffer_dirty (tb->thrown[i]))
-	      reiserfs_warning (tb->tb_sb,
-				"free_thrown deals with dirty buffer %d",
-				blocknr);
-	    brelse(tb->thrown[i]) ; /* incremented in store_thrown */
-	    reiserfs_free_block (tb->transaction_handle, NULL, blocknr, 0);
+static void free_thrown(struct tree_balance *tb)
+{
+	int i;
+	b_blocknr_t blocknr;
+	for (i = 0; i < sizeof(tb->thrown) / sizeof(tb->thrown[0]); i++) {
+		if (tb->thrown[i]) {
+			blocknr = tb->thrown[i]->b_blocknr;
+			if (buffer_dirty(tb->thrown[i]))
+				reiserfs_warning(tb->tb_sb,
+						 "free_thrown deals with dirty buffer %d",
+						 blocknr);
+			brelse(tb->thrown[i]);	/* incremented in store_thrown */
+			reiserfs_free_block(tb->transaction_handle, NULL,
+					    blocknr, 0);
+		}
 	}
-    }
 }
 
-void reiserfs_invalidate_buffer (struct tree_balance * tb, struct buffer_head * bh)
+void reiserfs_invalidate_buffer(struct tree_balance *tb, struct buffer_head *bh)
 {
-    struct block_head *blkh;
-    blkh = B_BLK_HEAD(bh);
-    set_blkh_level( blkh, FREE_LEVEL );
-    set_blkh_nr_item( blkh, 0 );
-    
-    clear_buffer_dirty(bh);
-    store_thrown (tb, bh);
+	struct block_head *blkh;
+	blkh = B_BLK_HEAD(bh);
+	set_blkh_level(blkh, FREE_LEVEL);
+	set_blkh_nr_item(blkh, 0);
+
+	clear_buffer_dirty(bh);
+	store_thrown(tb, bh);
 }
 
 /* Replace n_dest'th key in buffer dest by n_src'th key of buffer src.*/
-void replace_key (struct tree_balance * tb, struct buffer_head * dest, int n_dest,
-		  struct buffer_head * src, int n_src)
+void replace_key(struct tree_balance *tb, struct buffer_head *dest, int n_dest,
+		 struct buffer_head *src, int n_src)
 {
 
-    RFALSE( dest == NULL || src == NULL,
-	    "vs-12305: source or destination buffer is 0 (src=%p, dest=%p)",
-	    src, dest);
-    RFALSE( ! B_IS_KEYS_LEVEL (dest),
-	    "vs-12310: invalid level (%z) for destination buffer. dest must be leaf",
-	    dest);
-    RFALSE( n_dest < 0 || n_src < 0,
-	    "vs-12315: src(%d) or dest(%d) key number < 0", n_src, n_dest);
-    RFALSE( n_dest >= B_NR_ITEMS(dest) || n_src >= B_NR_ITEMS(src),
-	    "vs-12320: src(%d(%d)) or dest(%d(%d)) key number is too big",
-	    n_src, B_NR_ITEMS(src), n_dest, B_NR_ITEMS(dest));
-   
-    if (B_IS_ITEMS_LEVEL (src))
-	/* source buffer contains leaf node */
-	memcpy (B_N_PDELIM_KEY(dest,n_dest), B_N_PITEM_HEAD(src,n_src), KEY_SIZE);
-    else
-	memcpy (B_N_PDELIM_KEY(dest,n_dest), B_N_PDELIM_KEY(src,n_src), KEY_SIZE);
-
-    do_balance_mark_internal_dirty (tb, dest, 0);
+	RFALSE(dest == NULL || src == NULL,
+	       "vs-12305: source or destination buffer is 0 (src=%p, dest=%p)",
+	       src, dest);
+	RFALSE(!B_IS_KEYS_LEVEL(dest),
+	       "vs-12310: invalid level (%z) for destination buffer. dest must be leaf",
+	       dest);
+	RFALSE(n_dest < 0 || n_src < 0,
+	       "vs-12315: src(%d) or dest(%d) key number < 0", n_src, n_dest);
+	RFALSE(n_dest >= B_NR_ITEMS(dest) || n_src >= B_NR_ITEMS(src),
+	       "vs-12320: src(%d(%d)) or dest(%d(%d)) key number is too big",
+	       n_src, B_NR_ITEMS(src), n_dest, B_NR_ITEMS(dest));
+
+	if (B_IS_ITEMS_LEVEL(src))
+		/* source buffer contains leaf node */
+		memcpy(B_N_PDELIM_KEY(dest, n_dest), B_N_PITEM_HEAD(src, n_src),
+		       KEY_SIZE);
+	else
+		memcpy(B_N_PDELIM_KEY(dest, n_dest), B_N_PDELIM_KEY(src, n_src),
+		       KEY_SIZE);
+
+	do_balance_mark_internal_dirty(tb, dest, 0);
 }
 
-
-int get_left_neighbor_position (
-				struct tree_balance * tb, 
-				int h
-				)
+int get_left_neighbor_position(struct tree_balance *tb, int h)
 {
-  int Sh_position = PATH_H_POSITION (tb->tb_path, h + 1);
+	int Sh_position = PATH_H_POSITION(tb->tb_path, h + 1);
 
-  RFALSE( PATH_H_PPARENT (tb->tb_path, h) == 0 || tb->FL[h] == 0,
-	  "vs-12325: FL[%d](%p) or F[%d](%p) does not exist", 
-	  h, tb->FL[h], h, PATH_H_PPARENT (tb->tb_path, h));
+	RFALSE(PATH_H_PPARENT(tb->tb_path, h) == 0 || tb->FL[h] == 0,
+	       "vs-12325: FL[%d](%p) or F[%d](%p) does not exist",
+	       h, tb->FL[h], h, PATH_H_PPARENT(tb->tb_path, h));
 
-  if (Sh_position == 0)
-    return B_NR_ITEMS (tb->FL[h]);
-  else
-    return Sh_position - 1;
+	if (Sh_position == 0)
+		return B_NR_ITEMS(tb->FL[h]);
+	else
+		return Sh_position - 1;
 }
 
-
-int get_right_neighbor_position (struct tree_balance * tb, int h)
+int get_right_neighbor_position(struct tree_balance *tb, int h)
 {
-  int Sh_position = PATH_H_POSITION (tb->tb_path, h + 1);
+	int Sh_position = PATH_H_POSITION(tb->tb_path, h + 1);
 
-  RFALSE( PATH_H_PPARENT (tb->tb_path, h) == 0 || tb->FR[h] == 0,
-	  "vs-12330: F[%d](%p) or FR[%d](%p) does not exist", 
-	  h, PATH_H_PPARENT (tb->tb_path, h), h, tb->FR[h]);
+	RFALSE(PATH_H_PPARENT(tb->tb_path, h) == 0 || tb->FR[h] == 0,
+	       "vs-12330: F[%d](%p) or FR[%d](%p) does not exist",
+	       h, PATH_H_PPARENT(tb->tb_path, h), h, tb->FR[h]);
 
-  if (Sh_position == B_NR_ITEMS (PATH_H_PPARENT (tb->tb_path, h)))
-    return 0;
-  else
-    return Sh_position + 1;
+	if (Sh_position == B_NR_ITEMS(PATH_H_PPARENT(tb->tb_path, h)))
+		return 0;
+	else
+		return Sh_position + 1;
 }
 
-
 #ifdef CONFIG_REISERFS_CHECK
 
-int is_reusable (struct super_block * s, b_blocknr_t block, int bit_value);
-static void check_internal_node (struct super_block * s, struct buffer_head * bh, char * mes)
+int is_reusable(struct super_block *s, b_blocknr_t block, int bit_value);
+static void check_internal_node(struct super_block *s, struct buffer_head *bh,
+				char *mes)
 {
-  struct disk_child * dc;
-  int i;
-
-  RFALSE( !bh, "PAP-12336: bh == 0");
-
-  if (!bh || !B_IS_IN_TREE (bh))
-    return;
- 
-  RFALSE( !buffer_dirty (bh) && 
-	  !(buffer_journaled(bh) || buffer_journal_dirty(bh)),
-	  "PAP-12337: buffer (%b) must be dirty", bh);
-  dc = B_N_CHILD (bh, 0);
-
-  for (i = 0; i <= B_NR_ITEMS (bh); i ++, dc ++) {
-    if (!is_reusable (s, dc_block_number(dc), 1) ) {
-      print_cur_tb (mes);
-      reiserfs_panic (s, "PAP-12338: check_internal_node: invalid child pointer %y in %b", dc, bh);
-    }
-  }
-}
+	struct disk_child *dc;
+	int i;
 
+	RFALSE(!bh, "PAP-12336: bh == 0");
 
-static int locked_or_not_in_tree (struct buffer_head * bh, char * which)
-{
-  if ( (!buffer_journal_prepared (bh) && buffer_locked (bh)) ||
-        !B_IS_IN_TREE (bh) ) {
-    reiserfs_warning (NULL, "vs-12339: locked_or_not_in_tree: %s (%b)",
-                      which, bh);
-    return 1;
-  } 
-  return 0;
-}
+	if (!bh || !B_IS_IN_TREE(bh))
+		return;
 
+	RFALSE(!buffer_dirty(bh) &&
+	       !(buffer_journaled(bh) || buffer_journal_dirty(bh)),
+	       "PAP-12337: buffer (%b) must be dirty", bh);
+	dc = B_N_CHILD(bh, 0);
 
-static int check_before_balancing (struct tree_balance * tb)
-{
-  int retval = 0;	
-
-  if ( cur_tb ) {
-    reiserfs_panic (tb->tb_sb, "vs-12335: check_before_balancing: "
-		    "suspect that schedule occurred based on cur_tb not being null at this point in code. "
-		    "do_balance cannot properly handle schedule occurring while it runs.");
-  }
-  
-  /* double check that buffers that we will modify are unlocked. (fix_nodes should already have
-     prepped all of these for us). */
-  if ( tb->lnum[0] ) {
-    retval |= locked_or_not_in_tree (tb->L[0], "L[0]");
-    retval |= locked_or_not_in_tree (tb->FL[0], "FL[0]");
-    retval |= locked_or_not_in_tree (tb->CFL[0], "CFL[0]");
-    check_leaf (tb->L[0]);
-  }
-  if ( tb->rnum[0] ) {
-    retval |= locked_or_not_in_tree (tb->R[0], "R[0]");
-    retval |= locked_or_not_in_tree (tb->FR[0], "FR[0]");
-    retval |= locked_or_not_in_tree (tb->CFR[0], "CFR[0]");
-    check_leaf (tb->R[0]);
-  }
-  retval |= locked_or_not_in_tree (PATH_PLAST_BUFFER (tb->tb_path), "S[0]");
-  check_leaf (PATH_PLAST_BUFFER (tb->tb_path));
-
-  return retval;
+	for (i = 0; i <= B_NR_ITEMS(bh); i++, dc++) {
+		if (!is_reusable(s, dc_block_number(dc), 1)) {
+			print_cur_tb(mes);
+			reiserfs_panic(s,
+				       "PAP-12338: check_internal_node: invalid child pointer %y in %b",
+				       dc, bh);
+		}
+	}
 }
 
+static int locked_or_not_in_tree(struct buffer_head *bh, char *which)
+{
+	if ((!buffer_journal_prepared(bh) && buffer_locked(bh)) ||
+	    !B_IS_IN_TREE(bh)) {
+		reiserfs_warning(NULL,
+				 "vs-12339: locked_or_not_in_tree: %s (%b)",
+				 which, bh);
+		return 1;
+	}
+	return 0;
+}
 
-static void check_after_balance_leaf (struct tree_balance * tb)
+static int check_before_balancing(struct tree_balance *tb)
 {
-    if (tb->lnum[0]) {
-	if (B_FREE_SPACE (tb->L[0]) != 
-	    MAX_CHILD_SIZE (tb->L[0]) - dc_size(B_N_CHILD (tb->FL[0], get_left_neighbor_position (tb, 0)))) {
-	    print_cur_tb ("12221");
-	    reiserfs_panic (tb->tb_sb, "PAP-12355: check_after_balance_leaf: shift to left was incorrect");
+	int retval = 0;
+
+	if (cur_tb) {
+		reiserfs_panic(tb->tb_sb, "vs-12335: check_before_balancing: "
+			       "suspect that schedule occurred based on cur_tb not being null at this point in code. "
+			       "do_balance cannot properly handle schedule occurring while it runs.");
 	}
-    }
-    if (tb->rnum[0]) {
-	if (B_FREE_SPACE (tb->R[0]) != 
-	    MAX_CHILD_SIZE (tb->R[0]) - dc_size(B_N_CHILD (tb->FR[0], get_right_neighbor_position (tb, 0)))) {
-	    print_cur_tb ("12222");
-	    reiserfs_panic (tb->tb_sb, "PAP-12360: check_after_balance_leaf: shift to right was incorrect");
+
+	/* double check that buffers that we will modify are unlocked. (fix_nodes should already have
+	   prepped all of these for us). */
+	if (tb->lnum[0]) {
+		retval |= locked_or_not_in_tree(tb->L[0], "L[0]");
+		retval |= locked_or_not_in_tree(tb->FL[0], "FL[0]");
+		retval |= locked_or_not_in_tree(tb->CFL[0], "CFL[0]");
+		check_leaf(tb->L[0]);
 	}
-    }
-    if (PATH_H_PBUFFER(tb->tb_path,1) &&
-	(B_FREE_SPACE (PATH_H_PBUFFER(tb->tb_path,0)) != 
-		    (MAX_CHILD_SIZE (PATH_H_PBUFFER(tb->tb_path,0)) -
-		    dc_size(B_N_CHILD (PATH_H_PBUFFER(tb->tb_path,1),
-		    PATH_H_POSITION (tb->tb_path, 1)))) )) {
-	int left = B_FREE_SPACE (PATH_H_PBUFFER(tb->tb_path,0));
-	int right = (MAX_CHILD_SIZE (PATH_H_PBUFFER(tb->tb_path,0)) -
-		    dc_size(B_N_CHILD (PATH_H_PBUFFER(tb->tb_path,1),
-			PATH_H_POSITION (tb->tb_path, 1))));
-	print_cur_tb ("12223");
-	reiserfs_warning (tb->tb_sb,
-	    "B_FREE_SPACE (PATH_H_PBUFFER(tb->tb_path,0)) = %d; "
-    	    "MAX_CHILD_SIZE (%d) - dc_size( %y, %d ) [%d] = %d",
-	    left,
-	    MAX_CHILD_SIZE (PATH_H_PBUFFER(tb->tb_path,0)),
-	    PATH_H_PBUFFER(tb->tb_path,1),
-	    PATH_H_POSITION (tb->tb_path, 1),
-	    dc_size(B_N_CHILD (PATH_H_PBUFFER(tb->tb_path,1), PATH_H_POSITION (tb->tb_path, 1 )) ),
-	    right );
-	reiserfs_panic (tb->tb_sb, "PAP-12365: check_after_balance_leaf: S is incorrect");
-    }
-}
+	if (tb->rnum[0]) {
+		retval |= locked_or_not_in_tree(tb->R[0], "R[0]");
+		retval |= locked_or_not_in_tree(tb->FR[0], "FR[0]");
+		retval |= locked_or_not_in_tree(tb->CFR[0], "CFR[0]");
+		check_leaf(tb->R[0]);
+	}
+	retval |= locked_or_not_in_tree(PATH_PLAST_BUFFER(tb->tb_path), "S[0]");
+	check_leaf(PATH_PLAST_BUFFER(tb->tb_path));
 
+	return retval;
+}
 
-static void check_leaf_level (struct tree_balance * tb)
+static void check_after_balance_leaf(struct tree_balance *tb)
 {
-  check_leaf (tb->L[0]);
-  check_leaf (tb->R[0]);
-  check_leaf (PATH_PLAST_BUFFER (tb->tb_path));
+	if (tb->lnum[0]) {
+		if (B_FREE_SPACE(tb->L[0]) !=
+		    MAX_CHILD_SIZE(tb->L[0]) -
+		    dc_size(B_N_CHILD
+			    (tb->FL[0], get_left_neighbor_position(tb, 0)))) {
+			print_cur_tb("12221");
+			reiserfs_panic(tb->tb_sb,
+				       "PAP-12355: check_after_balance_leaf: shift to left was incorrect");
+		}
+	}
+	if (tb->rnum[0]) {
+		if (B_FREE_SPACE(tb->R[0]) !=
+		    MAX_CHILD_SIZE(tb->R[0]) -
+		    dc_size(B_N_CHILD
+			    (tb->FR[0], get_right_neighbor_position(tb, 0)))) {
+			print_cur_tb("12222");
+			reiserfs_panic(tb->tb_sb,
+				       "PAP-12360: check_after_balance_leaf: shift to right was incorrect");
+		}
+	}
+	if (PATH_H_PBUFFER(tb->tb_path, 1) &&
+	    (B_FREE_SPACE(PATH_H_PBUFFER(tb->tb_path, 0)) !=
+	     (MAX_CHILD_SIZE(PATH_H_PBUFFER(tb->tb_path, 0)) -
+	      dc_size(B_N_CHILD(PATH_H_PBUFFER(tb->tb_path, 1),
+				PATH_H_POSITION(tb->tb_path, 1)))))) {
+		int left = B_FREE_SPACE(PATH_H_PBUFFER(tb->tb_path, 0));
+		int right = (MAX_CHILD_SIZE(PATH_H_PBUFFER(tb->tb_path, 0)) -
+			     dc_size(B_N_CHILD(PATH_H_PBUFFER(tb->tb_path, 1),
+					       PATH_H_POSITION(tb->tb_path,
+							       1))));
+		print_cur_tb("12223");
+		reiserfs_warning(tb->tb_sb,
+				 "B_FREE_SPACE (PATH_H_PBUFFER(tb->tb_path,0)) = %d; "
+				 "MAX_CHILD_SIZE (%d) - dc_size( %y, %d ) [%d] = %d",
+				 left,
+				 MAX_CHILD_SIZE(PATH_H_PBUFFER(tb->tb_path, 0)),
+				 PATH_H_PBUFFER(tb->tb_path, 1),
+				 PATH_H_POSITION(tb->tb_path, 1),
+				 dc_size(B_N_CHILD
+					 (PATH_H_PBUFFER(tb->tb_path, 1),
+					  PATH_H_POSITION(tb->tb_path, 1))),
+				 right);
+		reiserfs_panic(tb->tb_sb,
+			       "PAP-12365: check_after_balance_leaf: S is incorrect");
+	}
 }
 
-static void check_internal_levels (struct tree_balance * tb)
+static void check_leaf_level(struct tree_balance *tb)
 {
-  int h;
+	check_leaf(tb->L[0]);
+	check_leaf(tb->R[0]);
+	check_leaf(PATH_PLAST_BUFFER(tb->tb_path));
+}
 
-  /* check all internal nodes */
-  for (h = 1; tb->insert_size[h]; h ++) {
-    check_internal_node (tb->tb_sb, PATH_H_PBUFFER (tb->tb_path, h), "BAD BUFFER ON PATH");
-    if (tb->lnum[h])
-      check_internal_node (tb->tb_sb, tb->L[h], "BAD L");
-    if (tb->rnum[h])
-      check_internal_node (tb->tb_sb, tb->R[h], "BAD R");
-  }
+static void check_internal_levels(struct tree_balance *tb)
+{
+	int h;
+
+	/* check all internal nodes */
+	for (h = 1; tb->insert_size[h]; h++) {
+		check_internal_node(tb->tb_sb, PATH_H_PBUFFER(tb->tb_path, h),
+				    "BAD BUFFER ON PATH");
+		if (tb->lnum[h])
+			check_internal_node(tb->tb_sb, tb->L[h], "BAD L");
+		if (tb->rnum[h])
+			check_internal_node(tb->tb_sb, tb->R[h], "BAD R");
+	}
 
 }
 
 #endif
 
-
-
-
-
-
 /* Now we have all of the buffers that must be used in balancing of
    the tree.  We rely on the assumption that schedule() will not occur
    while do_balance works. ( Only interrupt handlers are acceptable.)
@@ -1484,114 +2029,109 @@ static void check_internal_levels (struct tree_balance * tb)
 
 */
 
-static inline void do_balance_starts (struct tree_balance *tb)
+static inline void do_balance_starts(struct tree_balance *tb)
 {
-    /* use print_cur_tb() to see initial state of struct
-       tree_balance */
+	/* use print_cur_tb() to see initial state of struct
+	   tree_balance */
 
-    /* store_print_tb (tb); */
+	/* store_print_tb (tb); */
 
-    /* do not delete, just comment it out */
+	/* do not delete, just comment it out */
 /*    print_tb(flag, PATH_LAST_POSITION(tb->tb_path), tb->tb_path->pos_in_item, tb, 
 	     "check");*/
-    RFALSE( check_before_balancing (tb), "PAP-12340: locked buffers in TB");
+	RFALSE(check_before_balancing(tb), "PAP-12340: locked buffers in TB");
 #ifdef CONFIG_REISERFS_CHECK
-    cur_tb = tb;
+	cur_tb = tb;
 #endif
 }
 
-
-static inline void do_balance_completed (struct tree_balance * tb)
+static inline void do_balance_completed(struct tree_balance *tb)
 {
-    
+
 #ifdef CONFIG_REISERFS_CHECK
-    check_leaf_level (tb);
-    check_internal_levels (tb);
-    cur_tb = NULL;
+	check_leaf_level(tb);
+	check_internal_levels(tb);
+	cur_tb = NULL;
 #endif
 
-    /* reiserfs_free_block is no longer schedule safe.  So, we need to
-    ** put the buffers we want freed on the thrown list during do_balance,
-    ** and then free them now
-    */
-
-    REISERFS_SB(tb->tb_sb)->s_do_balance ++;
+	/* reiserfs_free_block is no longer schedule safe.  So, we need to
+	 ** put the buffers we want freed on the thrown list during do_balance,
+	 ** and then free them now
+	 */
 
+	REISERFS_SB(tb->tb_sb)->s_do_balance++;
 
-    /* release all nodes hold to perform the balancing */
-    unfix_nodes(tb);
+	/* release all nodes hold to perform the balancing */
+	unfix_nodes(tb);
 
-    free_thrown(tb) ;
+	free_thrown(tb);
 }
 
+void do_balance(struct tree_balance *tb,	/* tree_balance structure */
+		struct item_head *ih,	/* item header of inserted item */
+		const char *body,	/* body  of inserted item or bytes to paste */
+		int flag)
+{				/* i - insert, d - delete
+				   c - cut, p - paste
+
+				   Cut means delete part of an item
+				   (includes removing an entry from a
+				   directory).
+
+				   Delete means delete whole item.
+
+				   Insert means add a new item into the
+				   tree.
+
+				   Paste means to append to the end of an
+				   existing file or to insert a directory
+				   entry.  */
+	int child_pos,		/* position of a child node in its parent */
+	 h;			/* level of the tree being processed */
+	struct item_head insert_key[2];	/* in our processing of one level
+					   we sometimes determine what
+					   must be inserted into the next
+					   higher level.  This insertion
+					   consists of a key or two keys
+					   and their corresponding
+					   pointers */
+	struct buffer_head *insert_ptr[2];	/* inserted node-ptrs for the next
+						   level */
+
+	tb->tb_mode = flag;
+	tb->need_balance_dirty = 0;
+
+	if (FILESYSTEM_CHANGED_TB(tb)) {
+		reiserfs_panic(tb->tb_sb,
+			       "clm-6000: do_balance, fs generation has changed\n");
+	}
+	/* if we have no real work to do  */
+	if (!tb->insert_size[0]) {
+		reiserfs_warning(tb->tb_sb,
+				 "PAP-12350: do_balance: insert_size == 0, mode == %c",
+				 flag);
+		unfix_nodes(tb);
+		return;
+	}
 
+	atomic_inc(&(fs_generation(tb->tb_sb)));
+	do_balance_starts(tb);
 
-
-
-void do_balance (struct tree_balance * tb, /* tree_balance structure */
-		 struct item_head * ih,	   /* item header of inserted item */
-		 const char * body,  /* body  of inserted item or bytes to paste */
-		 int flag)  /* i - insert, d - delete
-			       c - cut, p - paste
-						      
-			       Cut means delete part of an item
-			       (includes removing an entry from a
-			       directory).
-						      
-			       Delete means delete whole item.
-						      
-			       Insert means add a new item into the
-			       tree.
-						      						      
-			       Paste means to append to the end of an
-			       existing file or to insert a directory
-			       entry.  */
-{
-    int child_pos, /* position of a child node in its parent */
-	h;	   /* level of the tree being processed */
-    struct item_head insert_key[2]; /* in our processing of one level
-				       we sometimes determine what
-				       must be inserted into the next
-				       higher level.  This insertion
-				       consists of a key or two keys
-				       and their corresponding
-				       pointers */
-    struct buffer_head *insert_ptr[2]; /* inserted node-ptrs for the next
-					  level */
-
-    tb->tb_mode = flag;
-    tb->need_balance_dirty = 0;
-
-    if (FILESYSTEM_CHANGED_TB(tb)) {
-        reiserfs_panic(tb->tb_sb, "clm-6000: do_balance, fs generation has changed\n") ;
-    }
-    /* if we have no real work to do  */
-    if ( ! tb->insert_size[0] ) {
-	reiserfs_warning (tb->tb_sb,
-			  "PAP-12350: do_balance: insert_size == 0, mode == %c",
-			  flag);
-	unfix_nodes(tb);
-	return;
-    }
-
-    atomic_inc (&(fs_generation (tb->tb_sb)));
-    do_balance_starts (tb);
-    
 	/* balance leaf returns 0 except if combining L R and S into
 	   one node.  see balance_internal() for explanation of this
-	   line of code.*/
-	child_pos = PATH_H_B_ITEM_ORDER (tb->tb_path, 0) +
-	  balance_leaf (tb, ih, body, flag, insert_key, insert_ptr);
+	   line of code. */
+	child_pos = PATH_H_B_ITEM_ORDER(tb->tb_path, 0) +
+	    balance_leaf(tb, ih, body, flag, insert_key, insert_ptr);
 
 #ifdef CONFIG_REISERFS_CHECK
-    check_after_balance_leaf (tb);
+	check_after_balance_leaf(tb);
 #endif
 
-    /* Balance internal level of the tree. */
-    for ( h = 1; h < MAX_HEIGHT && tb->insert_size[h]; h++ )
-	child_pos = balance_internal (tb, h, child_pos, insert_key, insert_ptr);
-
+	/* Balance internal level of the tree. */
+	for (h = 1; h < MAX_HEIGHT && tb->insert_size[h]; h++)
+		child_pos =
+		    balance_internal(tb, h, child_pos, insert_key, insert_ptr);
 
-    do_balance_completed (tb);
+	do_balance_completed(tb);
 
 }