diff options
Diffstat (limited to 'fs/reiserfs/lbalance.c')
| -rw-r--r-- | fs/reiserfs/lbalance.c | 1222 |
1 files changed, 1222 insertions, 0 deletions
diff --git a/fs/reiserfs/lbalance.c b/fs/reiserfs/lbalance.c new file mode 100644 index 00000000000..2406608fc5c --- /dev/null +++ b/fs/reiserfs/lbalance.c @@ -0,0 +1,1222 @@ +/* + * Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README + */ + +#include <linux/config.h> +#include <asm/uaccess.h> +#include <linux/string.h> +#include <linux/time.h> +#include <linux/reiserfs_fs.h> +#include <linux/buffer_head.h> + +/* these are used in do_balance.c */ + +/* leaf_move_items + leaf_shift_left + leaf_shift_right + leaf_delete_items + leaf_insert_into_buf + leaf_paste_in_buffer + leaf_cut_from_buffer + leaf_paste_entries + */ + + +/* copy copy_count entries from source directory item to dest buffer (creating new item if needed) */ +static void leaf_copy_dir_entries (struct buffer_info * dest_bi, struct buffer_head * source, + int last_first, int item_num, int from, int copy_count) +{ + struct buffer_head * dest = dest_bi->bi_bh; + int item_num_in_dest; /* either the number of target item, + or if we must create a new item, + the number of the item we will + create it next to */ + struct item_head * ih; + struct reiserfs_de_head * deh; + int copy_records_len; /* length of all records in item to be copied */ + char * records; + + ih = B_N_PITEM_HEAD (source, item_num); + + RFALSE( !is_direntry_le_ih (ih), "vs-10000: item must be directory item"); + + /* length of all record to be copied and first byte of the last of them */ + deh = B_I_DEH (source, ih); + if (copy_count) { + copy_records_len = (from ? deh_location( &(deh[from - 1]) ) : + ih_item_len(ih)) - deh_location( &(deh[from + copy_count - 1])); + records = source->b_data + ih_location(ih) + + deh_location( &(deh[from + copy_count - 1])); + } else { + copy_records_len = 0; + records = NULL; + } + + /* when copy last to first, dest buffer can contain 0 items */ + item_num_in_dest = (last_first == LAST_TO_FIRST) ? (( B_NR_ITEMS(dest) ) ? 0 : -1) : (B_NR_ITEMS(dest) - 1); + + /* if there are no items in dest or the first/last item in dest is not item of the same directory */ + if ( (item_num_in_dest == - 1) || + (last_first == FIRST_TO_LAST && le_ih_k_offset (ih) == DOT_OFFSET) || + (last_first == LAST_TO_FIRST && comp_short_le_keys/*COMP_SHORT_KEYS*/ (&ih->ih_key, B_N_PKEY (dest, item_num_in_dest)))) { + /* create new item in dest */ + struct item_head new_ih; + + /* form item header */ + memcpy (&new_ih.ih_key, &ih->ih_key, KEY_SIZE); + put_ih_version( &new_ih, KEY_FORMAT_3_5 ); + /* calculate item len */ + put_ih_item_len( &new_ih, DEH_SIZE * copy_count + copy_records_len ); + put_ih_entry_count( &new_ih, 0 ); + + if (last_first == LAST_TO_FIRST) { + /* form key by the following way */ + if (from < I_ENTRY_COUNT(ih)) { + set_le_ih_k_offset( &new_ih, deh_offset( &(deh[from]) ) ); + /*memcpy (&new_ih.ih_key.k_offset, &deh[from].deh_offset, SHORT_KEY_SIZE);*/ + } else { + /* no entries will be copied to this item in this function */ + set_le_ih_k_offset (&new_ih, U32_MAX); + /* this item is not yet valid, but we want I_IS_DIRECTORY_ITEM to return 1 for it, so we -1 */ + } + set_le_key_k_type (KEY_FORMAT_3_5, &(new_ih.ih_key), TYPE_DIRENTRY); + } + + /* insert item into dest buffer */ + leaf_insert_into_buf (dest_bi, (last_first == LAST_TO_FIRST) ? 0 : B_NR_ITEMS(dest), &new_ih, NULL, 0); + } else { + /* prepare space for entries */ + leaf_paste_in_buffer (dest_bi, (last_first==FIRST_TO_LAST) ? (B_NR_ITEMS(dest) - 1) : 0, MAX_US_INT, + DEH_SIZE * copy_count + copy_records_len, records, 0 + ); + } + + item_num_in_dest = (last_first == FIRST_TO_LAST) ? (B_NR_ITEMS(dest)-1) : 0; + + leaf_paste_entries (dest_bi->bi_bh, item_num_in_dest, + (last_first == FIRST_TO_LAST) ? I_ENTRY_COUNT(B_N_PITEM_HEAD (dest, item_num_in_dest)) : 0, + copy_count, deh + from, records, + DEH_SIZE * copy_count + copy_records_len + ); +} + + +/* Copy the first (if last_first == FIRST_TO_LAST) or last (last_first == LAST_TO_FIRST) item or + part of it or nothing (see the return 0 below) from SOURCE to the end + (if last_first) or beginning (!last_first) of the DEST */ +/* returns 1 if anything was copied, else 0 */ +static int leaf_copy_boundary_item (struct buffer_info * dest_bi, struct buffer_head * src, int last_first, + int bytes_or_entries) +{ + struct buffer_head * dest = dest_bi->bi_bh; + int dest_nr_item, src_nr_item; /* number of items in the source and destination buffers */ + struct item_head * ih; + struct item_head * dih; + + dest_nr_item = B_NR_ITEMS(dest); + + if ( last_first == FIRST_TO_LAST ) { + /* if ( DEST is empty or first item of SOURCE and last item of DEST are the items of different objects + or of different types ) then there is no need to treat this item differently from the other items + that we copy, so we return */ + ih = B_N_PITEM_HEAD (src, 0); + dih = B_N_PITEM_HEAD (dest, dest_nr_item - 1); + if (!dest_nr_item || (!op_is_left_mergeable (&(ih->ih_key), src->b_size))) + /* there is nothing to merge */ + return 0; + + RFALSE( ! ih_item_len(ih), "vs-10010: item can not have empty length"); + + if ( is_direntry_le_ih (ih) ) { + if ( bytes_or_entries == -1 ) + /* copy all entries to dest */ + bytes_or_entries = ih_entry_count(ih); + leaf_copy_dir_entries (dest_bi, src, FIRST_TO_LAST, 0, 0, bytes_or_entries); + return 1; + } + + /* copy part of the body of the first item of SOURCE to the end of the body of the last item of the DEST + part defined by 'bytes_or_entries'; if bytes_or_entries == -1 copy whole body; don't create new item header + */ + if ( bytes_or_entries == -1 ) + bytes_or_entries = ih_item_len(ih); + +#ifdef CONFIG_REISERFS_CHECK + else { + if (bytes_or_entries == ih_item_len(ih) && is_indirect_le_ih(ih)) + if (get_ih_free_space (ih)) + reiserfs_panic (NULL, "vs-10020: leaf_copy_boundary_item: " + "last unformatted node must be filled entirely (%h)", + ih); + } +#endif + + /* merge first item (or its part) of src buffer with the last + item of dest buffer. Both are of the same file */ + leaf_paste_in_buffer (dest_bi, + dest_nr_item - 1, ih_item_len(dih), bytes_or_entries, B_I_PITEM(src,ih), 0 + ); + + if (is_indirect_le_ih (dih)) { + RFALSE( get_ih_free_space (dih), + "vs-10030: merge to left: last unformatted node of non-last indirect item %h must have zerto free space", + ih); + if (bytes_or_entries == ih_item_len(ih)) + set_ih_free_space (dih, get_ih_free_space (ih)); + } + + return 1; + } + + + /* copy boundary item to right (last_first == LAST_TO_FIRST) */ + + /* ( DEST is empty or last item of SOURCE and first item of DEST + are the items of different object or of different types ) + */ + src_nr_item = B_NR_ITEMS (src); + ih = B_N_PITEM_HEAD (src, src_nr_item - 1); + dih = B_N_PITEM_HEAD (dest, 0); + + if (!dest_nr_item || !op_is_left_mergeable (&(dih->ih_key), src->b_size)) + return 0; + + if ( is_direntry_le_ih (ih)) { + if ( bytes_or_entries == -1 ) + /* bytes_or_entries = entries number in last item body of SOURCE */ + bytes_or_entries = ih_entry_count(ih); + + leaf_copy_dir_entries (dest_bi, src, LAST_TO_FIRST, src_nr_item - 1, ih_entry_count(ih) - bytes_or_entries, bytes_or_entries); + return 1; + } + + /* copy part of the body of the last item of SOURCE to the begin of the body of the first item of the DEST; + part defined by 'bytes_or_entries'; if byte_or_entriess == -1 copy whole body; change first item key of the DEST; + don't create new item header + */ + + RFALSE( is_indirect_le_ih(ih) && get_ih_free_space (ih), + "vs-10040: merge to right: last unformatted node of non-last indirect item must be filled entirely (%h)", + ih); + + if ( bytes_or_entries == -1 ) { + /* bytes_or_entries = length of last item body of SOURCE */ + bytes_or_entries = ih_item_len(ih); + + RFALSE( le_ih_k_offset (dih) != + le_ih_k_offset (ih) + op_bytes_number (ih, src->b_size), + "vs-10050: items %h and %h do not match", ih, dih); + + /* change first item key of the DEST */ + set_le_ih_k_offset (dih, le_ih_k_offset (ih)); + + /* item becomes non-mergeable */ + /* or mergeable if left item was */ + set_le_ih_k_type (dih, le_ih_k_type (ih)); + } else { + /* merge to right only part of item */ + RFALSE( ih_item_len(ih) <= bytes_or_entries, + "vs-10060: no so much bytes %lu (needed %lu)", + ( unsigned long )ih_item_len(ih), ( unsigned long )bytes_or_entries); + + /* change first item key of the DEST */ + if ( is_direct_le_ih (dih) ) { + RFALSE( le_ih_k_offset (dih) <= (unsigned long)bytes_or_entries, + "vs-10070: dih %h, bytes_or_entries(%d)", dih, bytes_or_entries); + set_le_ih_k_offset (dih, le_ih_k_offset (dih) - bytes_or_entries); + } else { + RFALSE( le_ih_k_offset (dih) <= + (bytes_or_entries / UNFM_P_SIZE) * dest->b_size, + "vs-10080: dih %h, bytes_or_entries(%d)", + dih, (bytes_or_entries/UNFM_P_SIZE)*dest->b_size); + set_le_ih_k_offset (dih, le_ih_k_offset (dih) - ((bytes_or_entries / UNFM_P_SIZE) * dest->b_size)); + } + } + + leaf_paste_in_buffer (dest_bi, 0, 0, bytes_or_entries, B_I_PITEM(src,ih) + ih_item_len(ih) - bytes_or_entries, 0); + return 1; +} + + +/* copy cpy_mun items from buffer src to buffer dest + * last_first == FIRST_TO_LAST means, that we copy cpy_num items beginning from first-th item in src to tail of dest + * last_first == LAST_TO_FIRST means, that we copy cpy_num items beginning from first-th item in src to head of dest + */ +static void leaf_copy_items_entirely (struct buffer_info * dest_bi, struct buffer_head * src, int last_first, + int first, int cpy_num) +{ + struct buffer_head * dest; + int nr, free_space; + int dest_before; + int last_loc, last_inserted_loc, location; + int i, j; + struct block_head * blkh; + struct item_head * ih; + + RFALSE( last_first != LAST_TO_FIRST && last_first != FIRST_TO_LAST, + "vs-10090: bad last_first parameter %d", last_first); + RFALSE( B_NR_ITEMS (src) - first < cpy_num, + "vs-10100: too few items in source %d, required %d from %d", + B_NR_ITEMS(src), cpy_num, first); + RFALSE( cpy_num < 0, "vs-10110: can not copy negative amount of items"); + RFALSE( ! dest_bi, "vs-10120: can not copy negative amount of items"); + + dest = dest_bi->bi_bh; + + RFALSE( ! dest, "vs-10130: can not copy negative amount of items"); + + if (cpy_num == 0) + return; + + blkh = B_BLK_HEAD(dest); + nr = blkh_nr_item( blkh ); + free_space = blkh_free_space(blkh); + + /* we will insert items before 0-th or nr-th item in dest buffer. It depends of last_first parameter */ + dest_before = (last_first == LAST_TO_FIRST) ? 0 : nr; + + /* location of head of first new item */ + ih = B_N_PITEM_HEAD (dest, dest_before); + + RFALSE( blkh_free_space(blkh) < cpy_num * IH_SIZE, + "vs-10140: not enough free space for headers %d (needed %d)", + B_FREE_SPACE (dest), cpy_num * IH_SIZE); + + /* prepare space for headers */ + memmove (ih + cpy_num, ih, (nr-dest_before) * IH_SIZE); + + /* copy item headers */ + memcpy (ih, B_N_PITEM_HEAD (src, first), cpy_num * IH_SIZE); + + free_space -= (IH_SIZE * cpy_num); + set_blkh_free_space( blkh, free_space ); + + /* location of unmovable item */ + j = location = (dest_before == 0) ? dest->b_size : ih_location(ih-1); + for (i = dest_before; i < nr + cpy_num; i ++) { + location -= ih_item_len( ih + i - dest_before ); + put_ih_location( ih + i - dest_before, location ); + } + + /* prepare space for items */ + last_loc = ih_location( &(ih[nr+cpy_num-1-dest_before]) ); + last_inserted_loc = ih_location( &(ih[cpy_num-1]) ); + + /* check free space */ + RFALSE( free_space < j - last_inserted_loc, + "vs-10150: not enough free space for items %d (needed %d)", + free_space, j - last_inserted_loc); + + memmove (dest->b_data + last_loc, + dest->b_data + last_loc + j - last_inserted_loc, + last_inserted_loc - last_loc); + + /* copy items */ + memcpy (dest->b_data + last_inserted_loc, B_N_PITEM(src,(first + cpy_num - 1)), + j - last_inserted_loc); + + /* sizes, item number */ + set_blkh_nr_item( blkh, nr + cpy_num ); + set_blkh_free_space( blkh, free_space - (j - last_inserted_loc) ); + + do_balance_mark_leaf_dirty (dest_bi->tb, dest, 0); + + if (dest_bi->bi_parent) { + struct disk_child *t_dc; + t_dc = B_N_CHILD (dest_bi->bi_parent, dest_bi->bi_position); + RFALSE( dc_block_number(t_dc) != dest->b_blocknr, + "vs-10160: block number in bh does not match to field in disk_child structure %lu and %lu", + ( long unsigned ) dest->b_blocknr, + ( long unsigned ) dc_block_number(t_dc)); + put_dc_size( t_dc, dc_size(t_dc) + (j - last_inserted_loc + IH_SIZE * cpy_num ) ); + + do_balance_mark_internal_dirty (dest_bi->tb, dest_bi->bi_parent, 0); + } +} + + +/* This function splits the (liquid) item into two items (useful when + shifting part of an item into another node.) */ +static void leaf_item_bottle (struct buffer_info * dest_bi, struct buffer_head * src, int last_first, + int item_num, int cpy_bytes) +{ + struct buffer_head * dest = dest_bi->bi_bh; + struct item_head * ih; + + RFALSE( cpy_bytes == -1, "vs-10170: bytes == - 1 means: do not split item"); + + if ( last_first == FIRST_TO_LAST ) { + /* if ( if item in position item_num in buffer SOURCE is directory item ) */ + if (is_direntry_le_ih (ih = B_N_PITEM_HEAD(src,item_num))) + leaf_copy_dir_entries (dest_bi, src, FIRST_TO_LAST, item_num, 0, cpy_bytes); + else { + struct item_head n_ih; + + /* copy part of the body of the item number 'item_num' of SOURCE to the end of the DEST + part defined by 'cpy_bytes'; create new item header; change old item_header (????); + n_ih = new item_header; + */ + memcpy (&n_ih, ih, IH_SIZE); + put_ih_item_len( &n_ih, cpy_bytes ); + if (is_indirect_le_ih (ih)) { + RFALSE( cpy_bytes == ih_item_len(ih) && get_ih_free_space(ih), + "vs-10180: when whole indirect item is bottle to left neighbor, it must have free_space==0 (not %lu)", + ( long unsigned ) get_ih_free_space (ih)); + set_ih_free_space (&n_ih, 0); + } + + RFALSE( op_is_left_mergeable (&(ih->ih_key), src->b_size), + "vs-10190: bad mergeability of item %h", ih); + n_ih.ih_version = ih->ih_version; /* JDM Endian safe, both le */ + leaf_insert_into_buf (dest_bi, B_NR_ITEMS(dest), &n_ih, B_N_PITEM (src, item_num), 0); + } + } else { + /* if ( if item in position item_num in buffer SOURCE is directory item ) */ + if (is_direntry_le_ih(ih = B_N_PITEM_HEAD (src, item_num))) + leaf_copy_dir_entries (dest_bi, src, LAST_TO_FIRST, item_num, I_ENTRY_COUNT(ih) - cpy_bytes, cpy_bytes); + else { + struct item_head n_ih; + + /* copy part of the body of the item number 'item_num' of SOURCE to the begin of the DEST + part defined by 'cpy_bytes'; create new item header; + n_ih = new item_header; + */ + memcpy (&n_ih, ih, SHORT_KEY_SIZE); + + n_ih.ih_version = ih->ih_version; /* JDM Endian safe, both le */ + + if (is_direct_le_ih (ih)) { + set_le_ih_k_offset (&n_ih, le_ih_k_offset (ih) + ih_item_len(ih) - cpy_bytes); + set_le_ih_k_type (&n_ih, TYPE_DIRECT); + set_ih_free_space (&n_ih, MAX_US_INT); + } else { + /* indirect item */ + RFALSE( !cpy_bytes && get_ih_free_space (ih), + "vs-10200: ih->ih_free_space must be 0 when indirect item will be appended"); + set_le_ih_k_offset (&n_ih, le_ih_k_offset (ih) + (ih_item_len(ih) - cpy_bytes) / UNFM_P_SIZE * dest->b_size); + set_le_ih_k_type (&n_ih, TYPE_INDIRECT); + set_ih_free_space (&n_ih, get_ih_free_space (ih)); + } + + /* set item length */ + put_ih_item_len( &n_ih, cpy_bytes ); + + n_ih.ih_version = ih->ih_version; /* JDM Endian safe, both le */ + + leaf_insert_into_buf (dest_bi, 0, &n_ih, B_N_PITEM(src,item_num) + ih_item_len(ih) - cpy_bytes, 0); + } + } +} + + +/* If cpy_bytes equals minus one than copy cpy_num whole items from SOURCE to DEST. + If cpy_bytes not equal to minus one than copy cpy_num-1 whole items from SOURCE to DEST. + From last item copy cpy_num bytes for regular item and cpy_num directory entries for + directory item. */ +static int leaf_copy_items (struct buffer_info * dest_bi, struct buffer_head * src, int last_first, int cpy_num, + int cpy_bytes) +{ + struct buffer_head * dest; + int pos, i, src_nr_item, bytes; + + dest = dest_bi->bi_bh; + RFALSE( !dest || !src, "vs-10210: !dest || !src"); + RFALSE( last_first != FIRST_TO_LAST && last_first != LAST_TO_FIRST, + "vs-10220:last_first != FIRST_TO_LAST && last_first != LAST_TO_FIRST"); + RFALSE( B_NR_ITEMS(src) < cpy_num, + "vs-10230: No enough items: %d, req. %d", B_NR_ITEMS(src), cpy_num); + RFALSE( cpy_num < 0,"vs-10240: cpy_num < 0 (%d)", cpy_num); + + if ( cpy_num == 0 ) + return 0; + + if ( last_first == FIRST_TO_LAST ) { + /* copy items to left */ + pos = 0; + if ( cpy_num == 1 ) + bytes = cpy_bytes; + else + bytes = -1; + + /* copy the first item or it part or nothing to the end of the DEST (i = leaf_copy_boundary_item(DEST,SOURCE,0,bytes)) */ + i = leaf_copy_boundary_item (dest_bi, src, FIRST_TO_LAST, bytes); + cpy_num -= i; + if ( cpy_num == 0 ) + return i; + pos += i; + if ( cpy_bytes == -1 ) + /* copy first cpy_num items starting from position 'pos' of SOURCE to end of DEST */ + leaf_copy_items_entirely (dest_bi, src, FIRST_TO_LAST, pos, cpy_num); + else { + /* copy first cpy_num-1 items starting from position 'pos-1' of the SOURCE to the end of the DEST */ + leaf_copy_items_entirely (dest_bi, src, FIRST_TO_LAST, pos, cpy_num-1); + + /* copy part of the item which number is cpy_num+pos-1 to the end of the DEST */ + leaf_item_bottle (dest_bi, src, FIRST_TO_LAST, cpy_num+pos-1, cpy_bytes); + } + } else { + /* copy items to right */ + src_nr_item = B_NR_ITEMS (src); + if ( cpy_num == 1 ) + bytes = cpy_bytes; + else + bytes = -1; + + /* copy the last item or it part or nothing to the begin of the DEST (i = leaf_copy_boundary_item(DEST,SOURCE,1,bytes)); */ + i = leaf_copy_boundary_item (dest_bi, src, LAST_TO_FIRST, bytes); + + cpy_num -= i; + if ( cpy_num == 0 ) + return i; + + pos = src_nr_item - cpy_num - i; + if ( cpy_bytes == -1 ) { + /* starting from position 'pos' copy last cpy_num items of SOURCE to begin of DEST */ + leaf_copy_items_entirely (dest_bi, src, LAST_TO_FIRST, pos, cpy_num); + } else { + /* copy last cpy_num-1 items starting from position 'pos+1' of the SOURCE to the begin of the DEST; */ + leaf_copy_items_entirely (dest_bi, src, LAST_TO_FIRST, pos+1, cpy_num-1); + + /* copy part of the item which number is pos to the begin of the DEST */ + leaf_item_bottle (dest_bi, src, LAST_TO_FIRST, pos, cpy_bytes); + } + } + return i; +} + + +/* there are types of coping: from S[0] to L[0], from S[0] to R[0], + from R[0] to L[0]. for each of these we have to define parent and + positions of destination and source buffers */ +static void leaf_define_dest_src_infos (int shift_mode, struct tree_balance * tb, struct buffer_info * dest_bi, + struct buffer_info * src_bi, int * first_last, + struct buffer_head * Snew) +{ + memset (dest_bi, 0, sizeof (struct buffer_info)); + memset (src_bi, 0, sizeof (struct buffer_info)); + + /* define dest, src, dest parent, dest position */ + switch (shift_mode) { + case LEAF_FROM_S_TO_L: /* it is used in leaf_shift_left */ + src_bi->tb = tb; + src_bi->bi_bh = PATH_PLAST_BUFFER (tb->tb_path); + src_bi->bi_parent = PATH_H_PPARENT (tb->tb_path, 0); + src_bi->bi_position = PATH_H_B_ITEM_ORDER (tb->tb_path, 0); /* src->b_item_order */ + dest_bi->tb = tb; + dest_bi->bi_bh = tb->L[0]; + dest_bi->bi_parent = tb->FL[0]; + dest_bi->bi_position = get_left_neighbor_position (tb, 0); + *first_last = FIRST_TO_LAST; + break; + + case LEAF_FROM_S_TO_R: /* it is used in leaf_shift_right */ + src_bi->tb = tb; + src_bi->bi_bh = PATH_PLAST_BUFFER (tb->tb_path); + src_bi->bi_parent = PATH_H_PPARENT (tb->tb_path, 0); + src_bi->bi_position = PATH_H_B_ITEM_ORDER (tb->tb_path, 0); + dest_bi->tb = tb; + dest_bi->bi_bh = tb->R[0]; + dest_bi->bi_parent = tb->FR[0]; + dest_bi->bi_position = get_right_neighbor_position (tb, 0); + *first_last = LAST_TO_FIRST; + break; + + case LEAF_FROM_R_TO_L: /* it is used in balance_leaf_when_delete */ + src_bi->tb = tb; + src_bi->bi_bh = tb->R[0]; + src_bi->bi_parent = tb->FR[0]; + src_bi->bi_position = get_right_neighbor_position (tb, 0); + dest_bi->tb = tb; + dest_bi->bi_bh = tb->L[0]; + dest_bi->bi_parent = tb->FL[0]; + dest_bi->bi_position = get_left_neighbor_position (tb, 0); + *first_last = FIRST_TO_LAST; + break; + + case LEAF_FROM_L_TO_R: /* it is used in balance_leaf_when_delete */ + src_bi->tb = tb; + src_bi->bi_bh = tb->L[0]; + src_bi->bi_parent = tb->FL[0]; + src_bi->bi_position = get_left_neighbor_position (tb, 0); + dest_bi->tb = tb; + dest_bi->bi_bh = tb->R[0]; + dest_bi->bi_parent = tb->FR[0]; + dest_bi->bi_position = get_right_neighbor_position (tb, 0); + *first_last = LAST_TO_FIRST; + break; + + case LEAF_FROM_S_TO_SNEW: + src_bi->tb = tb; + src_bi->bi_bh = PATH_PLAST_BUFFER (tb->tb_path); + src_bi->bi_parent = PATH_H_PPARENT (tb->tb_path, 0); + src_bi->bi_position = PATH_H_B_ITEM_ORDER (tb->tb_path, 0); + dest_bi->tb = tb; + dest_bi->bi_bh = Snew; + dest_bi->bi_parent = NULL; + dest_bi->bi_position = 0; + *first_last = LAST_TO_FIRST; + break; + + default: + reiserfs_panic (NULL, "vs-10250: leaf_define_dest_src_infos: shift type is unknown (%d)", shift_mode); + } + RFALSE( src_bi->bi_bh == 0 || dest_bi->bi_bh == 0, + "vs-10260: mode==%d, source (%p) or dest (%p) buffer is initialized incorrectly", + shift_mode, src_bi->bi_bh, dest_bi->bi_bh); +} + + + + +/* copy mov_num items and mov_bytes of the (mov_num-1)th item to + neighbor. Delete them from source */ +int leaf_move_items (int shift_mode, struct tree_balance * tb, int mov_num, int mov_bytes, struct buffer_head * Snew) +{ + int ret_value; + struct buffer_info dest_bi, src_bi; + int first_last; + + leaf_define_dest_src_infos (shift_mode, tb, &dest_bi, &src_bi, &first_last, Snew); + + ret_value = leaf_copy_items (&dest_bi, src_bi.bi_bh, first_last, mov_num, mov_bytes); + + leaf_delete_items (&src_bi, first_last, (first_last == FIRST_TO_LAST) ? 0 : (B_NR_ITEMS(src_bi.bi_bh) - mov_num), mov_num, mov_bytes); + + + return ret_value; +} + + +/* Shift shift_num items (and shift_bytes of last shifted item if shift_bytes != -1) + from S[0] to L[0] and replace the delimiting key */ +int leaf_shift_left (struct tree_balance * tb, int shift_num, int shift_bytes) +{ + struct buffer_head * S0 = PATH_PLAST_BUFFER (tb->tb_path); + int i; + + /* move shift_num (and shift_bytes bytes) items from S[0] to left neighbor L[0] */ + i = leaf_move_items (LEAF_FROM_S_TO_L, tb, shift_num, shift_bytes, NULL); + + if ( shift_num ) { + if (B_NR_ITEMS (S0) == 0) { /* number of items in S[0] == 0 */ + + RFALSE( shift_bytes != -1, + "vs-10270: S0 is empty now, but shift_bytes != -1 (%d)", + shift_bytes); +#ifdef CONFIG_REISERFS_CHECK + if (tb->tb_mode == M_PASTE || tb->tb_mode == M_INSERT) { + print_cur_tb ("vs-10275"); + reiserfs_panic (tb->tb_sb, "vs-10275: leaf_shift_left: balance condition corrupted (%c)", tb->tb_mode); + } +#endif + + if (PATH_H_POSITION (tb->tb_path, 1) == 0) + replace_key (tb, tb->CFL[0], tb->lkey[0], PATH_H_PPARENT (tb->tb_path, 0), 0); + + } else { + /* replace lkey in CFL[0] by 0-th key from S[0]; */ + replace_key (tb, tb->CFL[0], tb->lkey[0], S0, 0); + + RFALSE( (shift_bytes != -1 && + !(is_direntry_le_ih (B_N_PITEM_HEAD (S0, 0)) + && !I_ENTRY_COUNT (B_N_PITEM_HEAD (S0, 0)))) && + (!op_is_left_mergeable (B_N_PKEY (S0, 0), S0->b_size)), + "vs-10280: item must be mergeable"); + } + } + + return i; +} + + + + + +/* CLEANING STOPPED HERE */ + + + + +/* Shift shift_num (shift_bytes) items from S[0] to the right neighbor, and replace the delimiting key */ +int leaf_shift_right( + struct tree_balance * tb, + int shift_num, + int shift_bytes + ) +{ + // struct buffer_head * S0 = PATH_PLAST_BUFFER (tb->tb_path); + int ret_value; + + /* move shift_num (and shift_bytes) items from S[0] to right neighbor R[0] */ + ret_value = leaf_move_items (LEAF_FROM_S_TO_R, tb, shift_num, shift_bytes, NULL); + + /* replace rkey in CFR[0] by the 0-th key from R[0] */ + if (shift_num) { + replace_key (tb, tb->CFR[0], tb->rkey[0], tb->R[0], 0); + + } + + return ret_value; +} + + + +static void leaf_delete_items_entirely (struct buffer_info * bi, + int first, int del_num); +/* If del_bytes == -1, starting from position 'first' delete del_num items in whole in buffer CUR. + If not. + If last_first == 0. Starting from position 'first' delete del_num-1 items in whole. Delete part of body of + the first item. Part defined by del_bytes. Don't delete first item header + If last_first == 1. Starting from position 'first+1' delete del_num-1 items in whole. Delete part of body of + the last item . Part defined by del_bytes. Don't delete last item header. +*/ +void leaf_delete_items (struct buffer_info * cur_bi, int last_first, + int first, int del_num, int del_bytes) +{ + struct buffer_head * bh; + int item_amount = B_NR_ITEMS (bh = cur_bi->bi_bh); + + RFALSE( !bh, "10155: bh is not defined"); + RFALSE( del_num < 0, "10160: del_num can not be < 0. del_num==%d", del_num); + RFALSE( first < 0 || first + del_num > item_amount, + "10165: invalid number of first item to be deleted (%d) or " + "no so much items (%d) to delete (only %d)", + first, first + del_num, item_amount); + + if ( del_num == 0 ) + return; + + if ( first == 0 && del_num == item_amount && del_bytes == -1 ) { + make_empty_node (cur_bi); + do_balance_mark_leaf_dirty (cur_bi->tb, bh, 0); + return; + } + + if ( del_bytes == -1 ) + /* delete del_num items beginning from item in position first */ + leaf_delete_items_entirely (cur_bi, first, del_num); + else { + if ( last_first == FIRST_TO_LAST ) { + /* delete del_num-1 items beginning from item in position first */ + leaf_delete_items_entirely (cur_bi, first, del_num-1); + + /* delete the part of the first item of the bh + do not delete item header + */ + leaf_cut_from_buffer (cur_bi, 0, 0, del_bytes); + } else { + struct item_head * ih; + int len; + + /* delete del_num-1 items beginning from item in position first+1 */ + leaf_delete_items_entirely (cur_bi, first+1, del_num-1); + + if (is_direntry_le_ih (ih = B_N_PITEM_HEAD(bh, B_NR_ITEMS(bh)-1))) /* the last item is directory */ + /* len = numbers of directory entries in this item */ + len = ih_entry_count(ih); + else + /* len = body len of item */ + len = ih_item_len(ih); + + /* delete the part of the last item of the bh + do not delete item header + */ + leaf_cut_from_buffer (cur_bi, B_NR_ITEMS(bh)-1, len - del_bytes, del_bytes); + } + } +} + + +/* insert item into the leaf node in position before */ +void leaf_insert_into_buf (struct buffer_info * bi, int before, + struct item_head * inserted_item_ih, + const char * inserted_item_body, + int zeros_number) +{ + struct buffer_head * bh = bi->bi_bh; + int nr, free_space; + struct block_head * blkh; + struct item_head * ih; + int i; + int last_loc, unmoved_loc; + char * to; + + + blkh = B_BLK_HEAD(bh); + nr = blkh_nr_item(blkh); + free_space = blkh_free_space( blkh ); + + /* check free space */ + RFALSE( free_space < ih_item_len(inserted_item_ih) + IH_SIZE, + "vs-10170: not enough free space in block %z, new item %h", + bh, inserted_item_ih); + RFALSE( zeros_number > ih_item_len(inserted_item_ih), + "vs-10172: zero number == %d, item length == %d", + zeros_number, ih_item_len(inserted_item_ih)); + + + /* get item new item must be inserted before */ + ih = B_N_PITEM_HEAD (bh, before); + + /* prepare space for the body of new item */ + last_loc = nr ? ih_location( &(ih[nr - before - 1]) ) : bh->b_size; + unmoved_loc = before ? ih_location( ih-1 ) : bh->b_size; + + + memmove (bh->b_data + last_loc - ih_item_len(inserted_item_ih), + bh->b_data + last_loc, unmoved_loc - last_loc); + + to = bh->b_data + unmoved_loc - ih_item_len(inserted_item_ih); + memset (to, 0, zeros_number); + to += zeros_number; + + /* copy body to prepared space */ + if (inserted_item_body) + memmove (to, inserted_item_body, ih_item_len(inserted_item_ih) - zeros_number); + else + memset(to, '\0', ih_item_len(inserted_item_ih) - zeros_number); + + /* insert item header */ + memmove (ih + 1, ih, IH_SIZE * (nr - before)); + memmove (ih, inserted_item_ih, IH_SIZE); + + /* change locations */ + for (i = before; i < nr + 1; i ++) + { + unmoved_loc -= ih_item_len( &(ih[i-before])); + put_ih_location( &(ih[i-before]), unmoved_loc ); + } + + /* sizes, free space, item number */ + set_blkh_nr_item( blkh, blkh_nr_item(blkh) + 1 ); + set_blkh_free_space( blkh, + free_space - (IH_SIZE + ih_item_len(inserted_item_ih ) ) ); + do_balance_mark_leaf_dirty (bi->tb, bh, 1); + + if (bi->bi_parent) { + struct disk_child *t_dc; + t_dc = B_N_CHILD (bi->bi_parent, bi->bi_position); + put_dc_size( t_dc, dc_size(t_dc) + (IH_SIZE + ih_item_len(inserted_item_ih))); + do_balance_mark_internal_dirty (bi->tb, bi->bi_parent, 0); + } +} + + +/* paste paste_size bytes to affected_item_num-th item. + When item is a directory, this only prepare space for new entries */ +void leaf_paste_in_buffer (struct buffer_info * bi, int affected_item_num, + int pos_in_item, int paste_size, + const char * body, + int zeros_number) +{ + struct buffer_head * bh = bi->bi_bh; + int nr, free_space; + struct block_head * blkh; + struct item_head * ih; + int i; + int last_loc, unmoved_loc; + + blkh = B_BLK_HEAD(bh); + nr = blkh_nr_item(blkh); + free_space = blkh_free_space(blkh); + + + /* check free space */ + RFALSE( free_space < paste_size, + "vs-10175: not enough free space: needed %d, available %d", + paste_size, free_space); + +#ifdef CONFIG_REISERFS_CHECK + if (zeros_number > paste_size) { + print_cur_tb ("10177"); + reiserfs_panic ( NULL, "vs-10177: leaf_paste_in_buffer: ero number == %d, paste_size == %d", + zeros_number, paste_size); + } +#endif /* CONFIG_REISERFS_CHECK */ + + + /* item to be appended */ + ih = B_N_PITEM_HEAD(bh, affected_item_num); + + last_loc = ih_location( &(ih[nr - affected_item_num - 1]) ); + unmoved_loc = affected_item_num ? ih_location( ih-1 ) : bh->b_size; + + /* prepare space */ + memmove (bh->b_data + last_loc - paste_size, bh->b_data + last_loc, + unmoved_loc - last_loc); + + + /* change locations */ + for (i = affected_item_num; i < nr; i ++) + put_ih_location( &(ih[i-affected_item_num]), + ih_location( &(ih[i-affected_item_num])) - paste_size ); + + if ( body ) { + if (!is_direntry_le_ih (ih)) { + if (!pos_in_item) { + /* shift data to right */ + memmove (bh->b_data + ih_location(ih) + paste_size, + bh->b_data + ih_location(ih), ih_item_len(ih)); + /* paste data in the head of item */ + memset (bh->b_data + ih_location(ih), 0, zeros_number); + memcpy (bh->b_data + ih_location(ih) + zeros_number, body, paste_size - zeros_number); + } else { + memset (bh->b_data + unmoved_loc - paste_size, 0, zeros_number); + memcpy (bh->b_data + unmoved_loc - paste_size + zeros_number, body, paste_size - zeros_number); + } + } + } + else + memset(bh->b_data + unmoved_loc - paste_size, '\0', paste_size); + + put_ih_item_len( ih, ih_item_len(ih) + paste_size ); + + /* change free space */ + set_blkh_free_space( blkh, free_space - paste_size ); + + do_balance_mark_leaf_dirty (bi->tb, bh, 0); + + if (bi->bi_parent) { + struct disk_child *t_dc = B_N_CHILD (bi->bi_parent, bi->bi_position); + put_dc_size( t_dc, dc_size(t_dc) + paste_size ); + do_balance_mark_internal_dirty (bi->tb, bi->bi_parent, 0); + } +} + + +/* cuts DEL_COUNT entries beginning from FROM-th entry. Directory item + does not have free space, so it moves DEHs and remaining records as + necessary. Return value is size of removed part of directory item + in bytes. */ +static int leaf_cut_entries ( + struct buffer_head * bh, + struct item_head * ih, + int from, + int del_count + ) +{ + char * item; + struct reiserfs_de_head * deh; + int prev_record_offset; /* offset of record, that is (from-1)th */ + char * prev_record; /* */ + int cut_records_len; /* length of all removed records */ + int i; + + + /* make sure, that item is directory and there are enough entries to + remove */ + RFALSE( !is_direntry_le_ih (ih), "10180: item is not directory item"); + RFALSE( I_ENTRY_COUNT(ih) < from + del_count, + "10185: item contains not enough entries: entry_cout = %d, from = %d, to delete = %d", + I_ENTRY_COUNT(ih), from, del_count); + + if (del_count == 0) + return 0; + + /* first byte of item */ + item = bh->b_data + ih_location(ih); + + /* entry head array */ + deh = B_I_DEH (bh, ih); + + /* first byte of remaining entries, those are BEFORE cut entries + (prev_record) and length of all removed records (cut_records_len) */ + prev_record_offset = (from ? deh_location( &(deh[from - 1])) : ih_item_len(ih)); + cut_records_len = prev_record_offset/*from_record*/ - + deh_location( &(deh[from + del_count - 1])); + prev_record = item + prev_record_offset; + + + /* adjust locations of remaining entries */ + for (i = I_ENTRY_COUNT(ih) - 1; i > from + del_count - 1; i --) + put_deh_location( &(deh[i]), + deh_location( &deh[i] ) - (DEH_SIZE * del_count ) ); + + for (i = 0; i < from; i ++) + put_deh_location( &(deh[i]), + deh_location( &deh[i] ) - (DEH_SIZE * del_count + cut_records_len) ); + + put_ih_entry_count( ih, ih_entry_count(ih) - del_count ); + + /* shift entry head array and entries those are AFTER removed entries */ + memmove ((char *)(deh + from), + deh + from + del_count, + prev_record - cut_records_len - (char *)(deh + from + del_count)); + + /* shift records, those are BEFORE removed entries */ + memmove (prev_record - cut_records_len - DEH_SIZE * del_count, + prev_record, item + ih_item_len(ih) - prev_record); + + return DEH_SIZE * del_count + cut_records_len; +} + + +/* when cut item is part of regular file + pos_in_item - first byte that must be cut + cut_size - number of bytes to be cut beginning from pos_in_item + + when cut item is part of directory + pos_in_item - number of first deleted entry + cut_size - count of deleted entries + */ +void leaf_cut_from_buffer (struct buffer_info * bi, int cut_item_num, + int pos_in_item, int cut_size) +{ + int nr; + struct buffer_head * bh = bi->bi_bh; + struct block_head * blkh; + struct item_head * ih; + int last_loc, unmoved_loc; + int i; + + blkh = B_BLK_HEAD(bh); + nr = blkh_nr_item(blkh); + + /* item head of truncated item */ + ih = B_N_PITEM_HEAD (bh, cut_item_num); + + if (is_direntry_le_ih (ih)) { + /* first cut entry ()*/ + cut_size = leaf_cut_entries (bh, ih, pos_in_item, cut_size); + if (pos_in_item == 0) { + /* change key */ + RFALSE( cut_item_num, + "when 0-th enrty of item is cut, that item must be first in the node, not %d-th", cut_item_num); + /* change item key by key of first entry in the item */ + set_le_ih_k_offset (ih, deh_offset(B_I_DEH (bh, ih))); + /*memcpy (&ih->ih_key.k_offset, &(B_I_DEH (bh, ih)->deh_offset), SHORT_KEY_SIZE);*/ + } + } else { + /* item is direct or indirect */ + RFALSE( is_statdata_le_ih (ih), "10195: item is stat data"); + RFALSE( pos_in_item && pos_in_item + cut_size != ih_item_len(ih), + "10200: invalid offset (%lu) or trunc_size (%lu) or ih_item_len (%lu)", + ( long unsigned ) pos_in_item, ( long unsigned ) cut_size, + ( long unsigned ) ih_item_len (ih)); + + /* shift item body to left if cut is from the head of item */ + if (pos_in_item == 0) { + memmove( bh->b_data + ih_location(ih), + bh->b_data + ih_location(ih) + cut_size, + ih_item_len(ih) - cut_size); + + /* change key of item */ + if (is_direct_le_ih (ih)) + set_le_ih_k_offset (ih, le_ih_k_offset (ih) + cut_size); + else { + set_le_ih_k_offset (ih, le_ih_k_offset (ih) + (cut_size / UNFM_P_SIZE) * bh->b_size); + RFALSE( ih_item_len(ih) == cut_size && get_ih_free_space (ih), + "10205: invalid ih_free_space (%h)", ih); + } + } + } + + + /* location of the last item */ + last_loc = ih_location( &(ih[nr - cut_item_num - 1]) ); + + /* location of the item, which is remaining at the same place */ + unmoved_loc = cut_item_num ? ih_location(ih-1) : bh->b_size; + + + /* shift */ + memmove (bh->b_data + last_loc + cut_size, bh->b_data + last_loc, + unmoved_loc - last_loc - cut_size); + + /* change item length */ + put_ih_item_len( ih, ih_item_len(ih) - cut_size ); + + if (is_indirect_le_ih (ih)) { + if (pos_in_item) + set_ih_free_space (ih, 0); + } + + /* change locations */ + for (i = cut_item_num; i < nr; i ++) + put_ih_location( &(ih[i-cut_item_num]), ih_location( &ih[i-cut_item_num]) + cut_size ); + + /* size, free space */ + set_blkh_free_space( blkh, blkh_free_space(blkh) + cut_size ); + + do_balance_mark_leaf_dirty (bi->tb, bh, 0); + + if (bi->bi_parent) { + struct disk_child *t_dc; + t_dc = B_N_CHILD (bi->bi_parent, bi->bi_position); + put_dc_size( t_dc, dc_size(t_dc) - cut_size ); + do_balance_mark_internal_dirty (bi->tb, bi->bi_parent, 0); + } +} + + +/* delete del_num items from buffer starting from the first'th item */ +static void leaf_delete_items_entirely (struct buffer_info * bi, + int first, int del_num) +{ + struct buffer_head * bh = bi->bi_bh; + int nr; + int i, j; + int last_loc, last_removed_loc; + struct block_head * blkh; + struct item_head * ih; + + RFALSE( bh == NULL, "10210: buffer is 0"); + RFALSE( del_num < 0, "10215: del_num less than 0 (%d)", del_num); + + if (del_num == 0) + return; + + blkh = B_BLK_HEAD(bh); + nr = blkh_nr_item(blkh); + + RFALSE( first < 0 || first + del_num > nr, + "10220: first=%d, number=%d, there is %d items", first, del_num, nr); + + if (first == 0 && del_num == nr) { + /* this does not work */ + make_empty_node (bi); + + do_balance_mark_leaf_dirty (bi->tb, bh, 0); + return; + } + + ih = B_N_PITEM_HEAD (bh, first); + + /* location of unmovable item */ + j = (first == 0) ? bh->b_size : ih_location(ih-1); + + /* delete items */ + last_loc = ih_location( &(ih[nr-1-first]) ); + last_removed_loc = ih_location( &(ih[del_num-1]) ); + + memmove (bh->b_data + last_loc + j - last_removed_loc, + bh->b_data + last_loc, last_removed_loc - last_loc); + + /* delete item headers */ + memmove (ih, ih + del_num, (nr - first - del_num) * IH_SIZE); + + /* change item location */ + for (i = first; i < nr - del_num; i ++) + put_ih_location( &(ih[i-first]), ih_location( &(ih[i-first]) ) + (j - last_removed_loc) ); + + /* sizes, item number */ + set_blkh_nr_item( blkh, blkh_nr_item(blkh) - del_num ); + set_blkh_free_space( blkh, blkh_free_space(blkh) + (j - last_removed_loc + IH_SIZE * del_num) ); + + do_balance_mark_leaf_dirty (bi->tb, bh, 0); + + if (bi->bi_parent) { + struct disk_child *t_dc = B_N_CHILD (bi->bi_parent, bi->bi_position); + put_dc_size( t_dc, dc_size(t_dc) - + (j - last_removed_loc + IH_SIZE * del_num)); + do_balance_mark_internal_dirty (bi->tb, bi->bi_parent, 0); + } +} + + + + + +/* paste new_entry_count entries (new_dehs, records) into position before to item_num-th item */ +void leaf_paste_entries ( + struct buffer_head * bh, + int item_num, + int before, + int new_entry_count, + struct reiserfs_de_head * new_dehs, + const char * records, + int paste_size + ) +{ + struct item_head * ih; + char * item; + struct reiserfs_de_head * deh; + char * insert_point; + int i, old_entry_num; + + if (new_entry_count == 0) + return; + + ih = B_N_PITEM_HEAD(bh, item_num); + + /* make sure, that item is directory, and there are enough records in it */ + RFALSE( !is_direntry_le_ih (ih), "10225: item is not directory item"); + RFALSE( I_ENTRY_COUNT (ih) < before, + "10230: there are no entry we paste entries before. entry_count = %d, before = %d", + I_ENTRY_COUNT (ih), before); + + + /* first byte of dest item */ + item = bh->b_data + ih_location(ih); + + /* entry head array */ + deh = B_I_DEH (bh, ih); + + /* new records will be pasted at this point */ + insert_point = item + (before ? deh_location( &(deh[before - 1])) : (ih_item_len(ih) - paste_size)); + + /* adjust locations of records that will be AFTER new records */ + for (i = I_ENTRY_COUNT(ih) - 1; i >= before; i --) + put_deh_location( &(deh[i]), + deh_location(&(deh[i])) + (DEH_SIZE * new_entry_count )); + + /* adjust locations of records that will be BEFORE new records */ + for (i = 0; i < before; i ++) + put_deh_location( &(deh[i]), deh_location(&(deh[i])) + paste_size ); + + old_entry_num = I_ENTRY_COUNT(ih); + put_ih_entry_count( ih, ih_entry_count(ih) + new_entry_count ); + + /* prepare space for pasted records */ + memmove (insert_point + paste_size, insert_point, item + (ih_item_len(ih) - paste_size) - insert_point); + + /* copy new records */ + memcpy (insert_point + DEH_SIZE * new_entry_count, records, + paste_size - DEH_SIZE * new_entry_count); + + /* prepare space for new entry heads */ + deh += before; + memmove ((char *)(deh + new_entry_count), deh, insert_point - (char *)deh); + + /* copy new entry heads */ + deh = (struct reiserfs_de_head *)((char *)deh); + memcpy (deh, new_dehs, DEH_SIZE * new_entry_count); + + /* set locations of new records */ + for (i = 0; i < new_entry_count; i ++) + { + put_deh_location( &(deh[i]), + deh_location( &(deh[i] )) + + (- deh_location( &(new_dehs[new_entry_count - 1])) + + insert_point + DEH_SIZE * new_entry_count - item)); + } + + + /* change item key if necessary (when we paste before 0-th entry */ + if (!before) + { + set_le_ih_k_offset (ih, deh_offset(new_dehs)); +/* memcpy (&ih->ih_key.k_offset, + &new_dehs->deh_offset, SHORT_KEY_SIZE);*/ + } + +#ifdef CONFIG_REISERFS_CHECK + { + int prev, next; + /* check record locations */ + deh = B_I_DEH (bh, ih); + for (i = 0; i < I_ENTRY_COUNT(ih); i ++) { + next = (i < I_ENTRY_COUNT(ih) - 1) ? deh_location( &(deh[i + 1])) : 0; + prev = (i != 0) ? deh_location( &(deh[i - 1]) ) : 0; + + if (prev && prev <= deh_location( &(deh[i]))) + reiserfs_warning (NULL, "vs-10240: leaf_paste_entries: directory item (%h) corrupted (prev %a, cur(%d) %a)", + ih, deh + i - 1, i, deh + i); + if (next && next >= deh_location( &(deh[i]))) + reiserfs_warning (NULL, "vs-10250: leaf_paste_entries: directory item (%h) corrupted (cur(%d) %a, next %a)", + ih, i, deh + i, deh + i + 1); + } + } +#endif + +} |