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fs/reiserfs/ibalance.c
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/* * Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README */ |
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#include <asm/uaccess.h> #include <linux/string.h> #include <linux/time.h> #include <linux/reiserfs_fs.h> #include <linux/buffer_head.h> /* this is one and only function that is used outside (do_balance.c) */ |
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int balance_internal(struct tree_balance *, int, int, struct item_head *, struct buffer_head **); |
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/* modes of internal_shift_left, internal_shift_right and internal_insert_childs */ #define INTERNAL_SHIFT_FROM_S_TO_L 0 #define INTERNAL_SHIFT_FROM_R_TO_S 1 #define INTERNAL_SHIFT_FROM_L_TO_S 2 #define INTERNAL_SHIFT_FROM_S_TO_R 3 #define INTERNAL_INSERT_TO_S 4 #define INTERNAL_INSERT_TO_L 5 #define INTERNAL_INSERT_TO_R 6 |
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static void internal_define_dest_src_infos(int shift_mode, struct tree_balance *tb, int h, struct buffer_info *dest_bi, struct buffer_info *src_bi, int *d_key, struct buffer_head **cf) |
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{ |
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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 INTERNAL_SHIFT_FROM_S_TO_L: /* used in internal_shift_left */ src_bi->tb = tb; src_bi->bi_bh = PATH_H_PBUFFER(tb->tb_path, h); src_bi->bi_parent = PATH_H_PPARENT(tb->tb_path, h); src_bi->bi_position = PATH_H_POSITION(tb->tb_path, h + 1); dest_bi->tb = tb; dest_bi->bi_bh = tb->L[h]; dest_bi->bi_parent = tb->FL[h]; dest_bi->bi_position = get_left_neighbor_position(tb, h); *d_key = tb->lkey[h]; *cf = tb->CFL[h]; break; case INTERNAL_SHIFT_FROM_L_TO_S: src_bi->tb = tb; src_bi->bi_bh = tb->L[h]; src_bi->bi_parent = tb->FL[h]; src_bi->bi_position = get_left_neighbor_position(tb, h); dest_bi->tb = tb; dest_bi->bi_bh = PATH_H_PBUFFER(tb->tb_path, h); dest_bi->bi_parent = PATH_H_PPARENT(tb->tb_path, h); dest_bi->bi_position = PATH_H_POSITION(tb->tb_path, h + 1); /* dest position is analog of dest->b_item_order */ *d_key = tb->lkey[h]; *cf = tb->CFL[h]; break; case INTERNAL_SHIFT_FROM_R_TO_S: /* used in internal_shift_left */ src_bi->tb = tb; src_bi->bi_bh = tb->R[h]; src_bi->bi_parent = tb->FR[h]; src_bi->bi_position = get_right_neighbor_position(tb, h); dest_bi->tb = tb; dest_bi->bi_bh = PATH_H_PBUFFER(tb->tb_path, h); dest_bi->bi_parent = PATH_H_PPARENT(tb->tb_path, h); dest_bi->bi_position = PATH_H_POSITION(tb->tb_path, h + 1); *d_key = tb->rkey[h]; *cf = tb->CFR[h]; break; case INTERNAL_SHIFT_FROM_S_TO_R: src_bi->tb = tb; src_bi->bi_bh = PATH_H_PBUFFER(tb->tb_path, h); src_bi->bi_parent = PATH_H_PPARENT(tb->tb_path, h); src_bi->bi_position = PATH_H_POSITION(tb->tb_path, h + 1); dest_bi->tb = tb; dest_bi->bi_bh = tb->R[h]; dest_bi->bi_parent = tb->FR[h]; dest_bi->bi_position = get_right_neighbor_position(tb, h); *d_key = tb->rkey[h]; *cf = tb->CFR[h]; break; case INTERNAL_INSERT_TO_L: dest_bi->tb = tb; dest_bi->bi_bh = tb->L[h]; dest_bi->bi_parent = tb->FL[h]; dest_bi->bi_position = get_left_neighbor_position(tb, h); break; case INTERNAL_INSERT_TO_S: dest_bi->tb = tb; dest_bi->bi_bh = PATH_H_PBUFFER(tb->tb_path, h); dest_bi->bi_parent = PATH_H_PPARENT(tb->tb_path, h); dest_bi->bi_position = PATH_H_POSITION(tb->tb_path, h + 1); break; case INTERNAL_INSERT_TO_R: dest_bi->tb = tb; dest_bi->bi_bh = tb->R[h]; dest_bi->bi_parent = tb->FR[h]; dest_bi->bi_position = get_right_neighbor_position(tb, h); break; default: |
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reiserfs_panic(tb->tb_sb, "ibalance-1", "shift type is unknown (%d)", |
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shift_mode); } |
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} |
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/* Insert count node pointers into buffer cur before position to + 1. * Insert count items into buffer cur before position to. * Items and node pointers are specified by inserted and bh respectively. |
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*/ static void internal_insert_childs(struct buffer_info *cur_bi, int to, int count, struct item_head *inserted, struct buffer_head **bh) |
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{ |
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struct buffer_head *cur = cur_bi->bi_bh; struct block_head *blkh; int nr; struct reiserfs_key *ih; struct disk_child new_dc[2]; struct disk_child *dc; int i; if (count <= 0) return; blkh = B_BLK_HEAD(cur); nr = blkh_nr_item(blkh); RFALSE(count > 2, "too many children (%d) are to be inserted", count); RFALSE(B_FREE_SPACE(cur) < count * (KEY_SIZE + DC_SIZE), "no enough free space (%d), needed %d bytes", B_FREE_SPACE(cur), count * (KEY_SIZE + DC_SIZE)); /* prepare space for count disk_child */ dc = B_N_CHILD(cur, to + 1); memmove(dc + count, dc, (nr + 1 - (to + 1)) * DC_SIZE); /* copy to_be_insert disk children */ for (i = 0; i < count; i++) { put_dc_size(&(new_dc[i]), MAX_CHILD_SIZE(bh[i]) - B_FREE_SPACE(bh[i])); put_dc_block_number(&(new_dc[i]), bh[i]->b_blocknr); } memcpy(dc, new_dc, DC_SIZE * count); /* prepare space for count items */ ih = B_N_PDELIM_KEY(cur, ((to == -1) ? 0 : to)); memmove(ih + count, ih, (nr - to) * KEY_SIZE + (nr + 1 + count) * DC_SIZE); /* copy item headers (keys) */ memcpy(ih, inserted, KEY_SIZE); if (count > 1) memcpy(ih + 1, inserted + 1, KEY_SIZE); /* sizes, item number */ set_blkh_nr_item(blkh, blkh_nr_item(blkh) + count); set_blkh_free_space(blkh, blkh_free_space(blkh) - count * (DC_SIZE + KEY_SIZE)); do_balance_mark_internal_dirty(cur_bi->tb, cur, 0); /*&&&&&&&&&&&&&&&&&&&&&&&& */ check_internal(cur); /*&&&&&&&&&&&&&&&&&&&&&&&& */ if (cur_bi->bi_parent) { struct disk_child *t_dc = B_N_CHILD(cur_bi->bi_parent, cur_bi->bi_position); put_dc_size(t_dc, dc_size(t_dc) + (count * (DC_SIZE + KEY_SIZE))); do_balance_mark_internal_dirty(cur_bi->tb, cur_bi->bi_parent, 0); /*&&&&&&&&&&&&&&&&&&&&&&&& */ check_internal(cur_bi->bi_parent); /*&&&&&&&&&&&&&&&&&&&&&&&& */ } |
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} |
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/* Delete del_num items and node pointers from buffer cur starting from * * the first_i'th item and first_p'th pointers respectively. */ |
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static void internal_delete_pointers_items(struct buffer_info *cur_bi, int first_p, int first_i, int del_num) |
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{ |
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struct buffer_head *cur = cur_bi->bi_bh; int nr; struct block_head *blkh; struct reiserfs_key *key; struct disk_child *dc; RFALSE(cur == NULL, "buffer is 0"); RFALSE(del_num < 0, "negative number of items (%d) can not be deleted", del_num); RFALSE(first_p < 0 || first_p + del_num > B_NR_ITEMS(cur) + 1 || first_i < 0, "first pointer order (%d) < 0 or " "no so many pointers (%d), only (%d) or " "first key order %d < 0", first_p, first_p + del_num, B_NR_ITEMS(cur) + 1, first_i); if (del_num == 0) return; blkh = B_BLK_HEAD(cur); nr = blkh_nr_item(blkh); if (first_p == 0 && del_num == nr + 1) { RFALSE(first_i != 0, "1st deleted key must have order 0, not %d", first_i); make_empty_node(cur_bi); return; } |
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RFALSE(first_i + del_num > B_NR_ITEMS(cur), "first_i = %d del_num = %d " "no so many keys (%d) in the node (%b)(%z)", first_i, del_num, first_i + del_num, cur, cur); /* deleting */ dc = B_N_CHILD(cur, first_p); memmove(dc, dc + del_num, (nr + 1 - first_p - del_num) * DC_SIZE); key = B_N_PDELIM_KEY(cur, first_i); memmove(key, key + del_num, (nr - first_i - del_num) * KEY_SIZE + (nr + 1 - del_num) * DC_SIZE); /* sizes, item number */ set_blkh_nr_item(blkh, blkh_nr_item(blkh) - del_num); set_blkh_free_space(blkh, blkh_free_space(blkh) + (del_num * (KEY_SIZE + DC_SIZE))); do_balance_mark_internal_dirty(cur_bi->tb, cur, 0); /*&&&&&&&&&&&&&&&&&&&&&&& */ check_internal(cur); /*&&&&&&&&&&&&&&&&&&&&&&& */ if (cur_bi->bi_parent) { struct disk_child *t_dc; t_dc = B_N_CHILD(cur_bi->bi_parent, cur_bi->bi_position); put_dc_size(t_dc, dc_size(t_dc) - (del_num * (KEY_SIZE + DC_SIZE))); do_balance_mark_internal_dirty(cur_bi->tb, cur_bi->bi_parent, 0); /*&&&&&&&&&&&&&&&&&&&&&&&& */ check_internal(cur_bi->bi_parent); /*&&&&&&&&&&&&&&&&&&&&&&&& */ } } |
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/* delete n node pointers and items starting from given position */ |
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static void internal_delete_childs(struct buffer_info *cur_bi, int from, int n) |
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{ |
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int i_from; |
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i_from = (from == 0) ? from : from - 1; |
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/* delete n pointers starting from `from' position in CUR; delete n keys starting from 'i_from' position in CUR; */ internal_delete_pointers_items(cur_bi, from, i_from, n); |
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} |
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/* copy cpy_num node pointers and cpy_num - 1 items from buffer src to buffer dest * last_first == FIRST_TO_LAST means, that we copy first items from src to tail of dest |
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* last_first == LAST_TO_FIRST means, that we copy last items from src to head of dest |
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*/ |
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static void internal_copy_pointers_items(struct buffer_info *dest_bi, struct buffer_head *src, int last_first, int cpy_num) |
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{ |
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/* ATTENTION! Number of node pointers in DEST is equal to number of items in DEST * * as delimiting key have already inserted to buffer dest.*/ struct buffer_head *dest = dest_bi->bi_bh; int nr_dest, nr_src; int dest_order, src_order; struct block_head *blkh; struct reiserfs_key *key; struct disk_child *dc; nr_src = B_NR_ITEMS(src); RFALSE(dest == NULL || src == NULL, "src (%p) or dest (%p) buffer is 0", src, dest); RFALSE(last_first != FIRST_TO_LAST && last_first != LAST_TO_FIRST, "invalid last_first parameter (%d)", last_first); RFALSE(nr_src < cpy_num - 1, "no so many items (%d) in src (%d)", cpy_num, nr_src); RFALSE(cpy_num < 0, "cpy_num less than 0 (%d)", cpy_num); RFALSE(cpy_num - 1 + B_NR_ITEMS(dest) > (int)MAX_NR_KEY(dest), "cpy_num (%d) + item number in dest (%d) can not be > MAX_NR_KEY(%d)", cpy_num, B_NR_ITEMS(dest), MAX_NR_KEY(dest)); if (cpy_num == 0) return; |
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/* coping */ |
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blkh = B_BLK_HEAD(dest); nr_dest = blkh_nr_item(blkh); |
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/*dest_order = (last_first == LAST_TO_FIRST) ? 0 : nr_dest; */ /*src_order = (last_first == LAST_TO_FIRST) ? (nr_src - cpy_num + 1) : 0; */ (last_first == LAST_TO_FIRST) ? (dest_order = 0, src_order = nr_src - cpy_num + 1) : (dest_order = nr_dest, src_order = 0); |
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/* prepare space for cpy_num pointers */ dc = B_N_CHILD(dest, dest_order); |
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memmove(dc + cpy_num, dc, (nr_dest - dest_order) * DC_SIZE); |
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/* insert pointers */ |
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memcpy(dc, B_N_CHILD(src, src_order), DC_SIZE * cpy_num); /* prepare space for cpy_num - 1 item headers */ key = B_N_PDELIM_KEY(dest, dest_order); memmove(key + cpy_num - 1, key, KEY_SIZE * (nr_dest - dest_order) + DC_SIZE * (nr_dest + cpy_num)); /* insert headers */ memcpy(key, B_N_PDELIM_KEY(src, src_order), KEY_SIZE * (cpy_num - 1)); /* sizes, item number */ set_blkh_nr_item(blkh, blkh_nr_item(blkh) + (cpy_num - 1)); set_blkh_free_space(blkh, blkh_free_space(blkh) - (KEY_SIZE * (cpy_num - 1) + DC_SIZE * cpy_num)); do_balance_mark_internal_dirty(dest_bi->tb, dest, 0); /*&&&&&&&&&&&&&&&&&&&&&&&& */ check_internal(dest); /*&&&&&&&&&&&&&&&&&&&&&&&& */ if (dest_bi->bi_parent) { struct disk_child *t_dc; t_dc = B_N_CHILD(dest_bi->bi_parent, dest_bi->bi_position); put_dc_size(t_dc, dc_size(t_dc) + (KEY_SIZE * (cpy_num - 1) + DC_SIZE * cpy_num)); do_balance_mark_internal_dirty(dest_bi->tb, dest_bi->bi_parent, 0); /*&&&&&&&&&&&&&&&&&&&&&&&& */ check_internal(dest_bi->bi_parent); /*&&&&&&&&&&&&&&&&&&&&&&&& */ } |
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} |
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/* Copy cpy_num node pointers and cpy_num - 1 items from buffer src to buffer dest. * Delete cpy_num - del_par items and node pointers from buffer src. * last_first == FIRST_TO_LAST means, that we copy/delete first items from src. * last_first == LAST_TO_FIRST means, that we copy/delete last items from src. */ |
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static void internal_move_pointers_items(struct buffer_info *dest_bi, struct buffer_info *src_bi, int last_first, int cpy_num, int del_par) |
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{ |
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int first_pointer; int first_item; internal_copy_pointers_items(dest_bi, src_bi->bi_bh, last_first, cpy_num); if (last_first == FIRST_TO_LAST) { /* shift_left occurs */ first_pointer = 0; first_item = 0; |
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/* delete cpy_num - del_par pointers and keys starting for pointers with first_pointer, |
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for key - with first_item */ internal_delete_pointers_items(src_bi, first_pointer, first_item, cpy_num - del_par); } else { /* shift_right occurs */ int i, j; i = (cpy_num - del_par == (j = B_NR_ITEMS(src_bi->bi_bh)) + 1) ? 0 : j - cpy_num + del_par; internal_delete_pointers_items(src_bi, j + 1 - cpy_num + del_par, i, cpy_num - del_par); } |
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} /* Insert n_src'th key of buffer src before n_dest'th key of buffer dest. */ |
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static void internal_insert_key(struct buffer_info *dest_bi, int dest_position_before, /* insert key before key with n_dest number */ struct buffer_head *src, int src_position) |
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{ |
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struct buffer_head *dest = dest_bi->bi_bh; int nr; struct block_head *blkh; struct reiserfs_key *key; RFALSE(dest == NULL || src == NULL, "source(%p) or dest(%p) buffer is 0", src, dest); RFALSE(dest_position_before < 0 || src_position < 0, "source(%d) or dest(%d) key number less than 0", src_position, dest_position_before); RFALSE(dest_position_before > B_NR_ITEMS(dest) || src_position >= B_NR_ITEMS(src), "invalid position in dest (%d (key number %d)) or in src (%d (key number %d))", dest_position_before, B_NR_ITEMS(dest), src_position, B_NR_ITEMS(src)); RFALSE(B_FREE_SPACE(dest) < KEY_SIZE, "no enough free space (%d) in dest buffer", B_FREE_SPACE(dest)); blkh = B_BLK_HEAD(dest); nr = blkh_nr_item(blkh); /* prepare space for inserting key */ key = B_N_PDELIM_KEY(dest, dest_position_before); memmove(key + 1, key, (nr - dest_position_before) * KEY_SIZE + (nr + 1) * DC_SIZE); /* insert key */ memcpy(key, B_N_PDELIM_KEY(src, src_position), KEY_SIZE); /* Change dirt, free space, item number fields. */ set_blkh_nr_item(blkh, blkh_nr_item(blkh) + 1); set_blkh_free_space(blkh, blkh_free_space(blkh) - KEY_SIZE); do_balance_mark_internal_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); put_dc_size(t_dc, dc_size(t_dc) + KEY_SIZE); do_balance_mark_internal_dirty(dest_bi->tb, dest_bi->bi_parent, 0); } |
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} |
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/* Insert d_key'th (delimiting) key from buffer cfl to tail of dest. |
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* Copy pointer_amount node pointers and pointer_amount - 1 items from buffer src to buffer dest. * Replace d_key'th key in buffer cfl. * Delete pointer_amount items and node pointers from buffer src. */ /* this can be invoked both to shift from S to L and from R to S */ |
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static void internal_shift_left(int mode, /* INTERNAL_FROM_S_TO_L | INTERNAL_FROM_R_TO_S */ struct tree_balance *tb, int h, int pointer_amount) |
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{ |
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struct buffer_info dest_bi, src_bi; struct buffer_head *cf; int d_key_position; internal_define_dest_src_infos(mode, tb, h, &dest_bi, &src_bi, &d_key_position, &cf); /*printk("pointer_amount = %d ",pointer_amount); */ if (pointer_amount) { /* insert delimiting key from common father of dest and src to node dest into position B_NR_ITEM(dest) */ internal_insert_key(&dest_bi, B_NR_ITEMS(dest_bi.bi_bh), cf, d_key_position); if (B_NR_ITEMS(src_bi.bi_bh) == pointer_amount - 1) { if (src_bi.bi_position /*src->b_item_order */ == 0) replace_key(tb, cf, d_key_position, src_bi. bi_parent /*src->b_parent */ , 0); } else replace_key(tb, cf, d_key_position, src_bi.bi_bh, pointer_amount - 1); } /* last parameter is del_parameter */ internal_move_pointers_items(&dest_bi, &src_bi, FIRST_TO_LAST, pointer_amount, 0); |
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} /* Insert delimiting key to L[h]. * Copy n node pointers and n - 1 items from buffer S[h] to L[h]. * Delete n - 1 items and node pointers from buffer S[h]. */ /* it always shifts from S[h] to L[h] */ |
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static void internal_shift1_left(struct tree_balance *tb, int h, int pointer_amount) |
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{ |
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struct buffer_info dest_bi, src_bi; struct buffer_head *cf; int d_key_position; |
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internal_define_dest_src_infos(INTERNAL_SHIFT_FROM_S_TO_L, tb, h, &dest_bi, &src_bi, &d_key_position, &cf); |
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if (pointer_amount > 0) /* insert lkey[h]-th key from CFL[h] to left neighbor L[h] */ internal_insert_key(&dest_bi, B_NR_ITEMS(dest_bi.bi_bh), cf, d_key_position); /* internal_insert_key (tb->L[h], B_NR_ITEM(tb->L[h]), tb->CFL[h], tb->lkey[h]); */ |
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/* last parameter is del_parameter */ internal_move_pointers_items(&dest_bi, &src_bi, FIRST_TO_LAST, pointer_amount, 1); /* internal_move_pointers_items (tb->L[h], tb->S[h], FIRST_TO_LAST, pointer_amount, 1); */ |
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} |
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/* Insert d_key'th (delimiting) key from buffer cfr to head of dest. |
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* Copy n node pointers and n - 1 items from buffer src to buffer dest. * Replace d_key'th key in buffer cfr. * Delete n items and node pointers from buffer src. */ |
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static void internal_shift_right(int mode, /* INTERNAL_FROM_S_TO_R | INTERNAL_FROM_L_TO_S */ struct tree_balance *tb, int h, int pointer_amount) |
1da177e4c Linux-2.6.12-rc2 |
522 |
{ |
bd4c625c0 reiserfs: run scr... |
523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 |
struct buffer_info dest_bi, src_bi; struct buffer_head *cf; int d_key_position; int nr; internal_define_dest_src_infos(mode, tb, h, &dest_bi, &src_bi, &d_key_position, &cf); nr = B_NR_ITEMS(src_bi.bi_bh); if (pointer_amount > 0) { /* insert delimiting key from common father of dest and src to dest node into position 0 */ internal_insert_key(&dest_bi, 0, cf, d_key_position); if (nr == pointer_amount - 1) { RFALSE(src_bi.bi_bh != PATH_H_PBUFFER(tb->tb_path, h) /*tb->S[h] */ || dest_bi.bi_bh != tb->R[h], "src (%p) must be == tb->S[h](%p) when it disappears", src_bi.bi_bh, PATH_H_PBUFFER(tb->tb_path, h)); /* when S[h] disappers replace left delemiting key as well */ if (tb->CFL[h]) replace_key(tb, cf, d_key_position, tb->CFL[h], tb->lkey[h]); } else replace_key(tb, cf, d_key_position, src_bi.bi_bh, nr - pointer_amount); } /* last parameter is del_parameter */ internal_move_pointers_items(&dest_bi, &src_bi, LAST_TO_FIRST, pointer_amount, 0); |
1da177e4c Linux-2.6.12-rc2 |
553 554 555 556 557 558 559 |
} /* Insert delimiting key to R[h]. * Copy n node pointers and n - 1 items from buffer S[h] to R[h]. * Delete n - 1 items and node pointers from buffer S[h]. */ /* it always shift from S[h] to R[h] */ |
bd4c625c0 reiserfs: run scr... |
560 561 |
static void internal_shift1_right(struct tree_balance *tb, int h, int pointer_amount) |
1da177e4c Linux-2.6.12-rc2 |
562 |
{ |
bd4c625c0 reiserfs: run scr... |
563 564 565 566 567 568 569 570 571 572 |
struct buffer_info dest_bi, src_bi; struct buffer_head *cf; int d_key_position; internal_define_dest_src_infos(INTERNAL_SHIFT_FROM_S_TO_R, tb, h, &dest_bi, &src_bi, &d_key_position, &cf); if (pointer_amount > 0) /* insert rkey from CFR[h] to right neighbor R[h] */ internal_insert_key(&dest_bi, 0, cf, d_key_position); /* internal_insert_key (tb->R[h], 0, tb->CFR[h], tb->rkey[h]); */ |
1da177e4c Linux-2.6.12-rc2 |
573 |
|
bd4c625c0 reiserfs: run scr... |
574 575 576 577 578 |
/* last parameter is del_parameter */ internal_move_pointers_items(&dest_bi, &src_bi, LAST_TO_FIRST, pointer_amount, 1); /* internal_move_pointers_items (tb->R[h], tb->S[h], LAST_TO_FIRST, pointer_amount, 1); */ } |
1da177e4c Linux-2.6.12-rc2 |
579 580 581 |
/* Delete insert_num node pointers together with their left items * and balance current node.*/ |
bd4c625c0 reiserfs: run scr... |
582 583 |
static void balance_internal_when_delete(struct tree_balance *tb, int h, int child_pos) |
1da177e4c Linux-2.6.12-rc2 |
584 |
{ |
bd4c625c0 reiserfs: run scr... |
585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 |
int insert_num; int n; struct buffer_head *tbSh = PATH_H_PBUFFER(tb->tb_path, h); struct buffer_info bi; insert_num = tb->insert_size[h] / ((int)(DC_SIZE + KEY_SIZE)); /* delete child-node-pointer(s) together with their left item(s) */ bi.tb = tb; bi.bi_bh = tbSh; bi.bi_parent = PATH_H_PPARENT(tb->tb_path, h); bi.bi_position = PATH_H_POSITION(tb->tb_path, h + 1); internal_delete_childs(&bi, child_pos, -insert_num); RFALSE(tb->blknum[h] > 1, "tb->blknum[%d]=%d when insert_size < 0", h, tb->blknum[h]); n = B_NR_ITEMS(tbSh); if (tb->lnum[h] == 0 && tb->rnum[h] == 0) { if (tb->blknum[h] == 0) { /* node S[h] (root of the tree) is empty now */ struct buffer_head *new_root; RFALSE(n || B_FREE_SPACE(tbSh) != MAX_CHILD_SIZE(tbSh) - DC_SIZE, "buffer must have only 0 keys (%d)", n); RFALSE(bi.bi_parent, "root has parent (%p)", bi.bi_parent); /* choose a new root */ if (!tb->L[h - 1] || !B_NR_ITEMS(tb->L[h - 1])) new_root = tb->R[h - 1]; else new_root = tb->L[h - 1]; /* switch super block's tree root block number to the new value */ PUT_SB_ROOT_BLOCK(tb->tb_sb, new_root->b_blocknr); //REISERFS_SB(tb->tb_sb)->s_rs->s_tree_height --; PUT_SB_TREE_HEIGHT(tb->tb_sb, SB_TREE_HEIGHT(tb->tb_sb) - 1); do_balance_mark_sb_dirty(tb, REISERFS_SB(tb->tb_sb)->s_sbh, 1); /*&&&&&&&&&&&&&&&&&&&&&& */ if (h > 1) /* use check_internal if new root is an internal node */ check_internal(new_root); /*&&&&&&&&&&&&&&&&&&&&&& */ /* do what is needed for buffer thrown from tree */ reiserfs_invalidate_buffer(tb, tbSh); return; } return; } if (tb->L[h] && tb->lnum[h] == -B_NR_ITEMS(tb->L[h]) - 1) { /* join S[h] with L[h] */ RFALSE(tb->rnum[h] != 0, "invalid tb->rnum[%d]==%d when joining S[h] with L[h]", h, tb->rnum[h]); internal_shift_left(INTERNAL_SHIFT_FROM_S_TO_L, tb, h, n + 1); reiserfs_invalidate_buffer(tb, tbSh); return; } if (tb->R[h] && tb->rnum[h] == -B_NR_ITEMS(tb->R[h]) - 1) { /* join S[h] with R[h] */ RFALSE(tb->lnum[h] != 0, "invalid tb->lnum[%d]==%d when joining S[h] with R[h]", h, tb->lnum[h]); internal_shift_right(INTERNAL_SHIFT_FROM_S_TO_R, tb, h, n + 1); reiserfs_invalidate_buffer(tb, tbSh); return; |
1da177e4c Linux-2.6.12-rc2 |
665 |
} |
1da177e4c Linux-2.6.12-rc2 |
666 |
|
bd4c625c0 reiserfs: run scr... |
667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 |
if (tb->lnum[h] < 0) { /* borrow from left neighbor L[h] */ RFALSE(tb->rnum[h] != 0, "wrong tb->rnum[%d]==%d when borrow from L[h]", h, tb->rnum[h]); /*internal_shift_right (tb, h, tb->L[h], tb->CFL[h], tb->lkey[h], tb->S[h], -tb->lnum[h]); */ internal_shift_right(INTERNAL_SHIFT_FROM_L_TO_S, tb, h, -tb->lnum[h]); return; } if (tb->rnum[h] < 0) { /* borrow from right neighbor R[h] */ RFALSE(tb->lnum[h] != 0, "invalid tb->lnum[%d]==%d when borrow from R[h]", h, tb->lnum[h]); internal_shift_left(INTERNAL_SHIFT_FROM_R_TO_S, tb, h, -tb->rnum[h]); /*tb->S[h], tb->CFR[h], tb->rkey[h], tb->R[h], -tb->rnum[h]); */ return; } if (tb->lnum[h] > 0) { /* split S[h] into two parts and put them into neighbors */ RFALSE(tb->rnum[h] == 0 || tb->lnum[h] + tb->rnum[h] != n + 1, "invalid tb->lnum[%d]==%d or tb->rnum[%d]==%d when S[h](item number == %d) is split between them", h, tb->lnum[h], h, tb->rnum[h], n); internal_shift_left(INTERNAL_SHIFT_FROM_S_TO_L, tb, h, tb->lnum[h]); /*tb->L[h], tb->CFL[h], tb->lkey[h], tb->S[h], tb->lnum[h]); */ internal_shift_right(INTERNAL_SHIFT_FROM_S_TO_R, tb, h, tb->rnum[h]); reiserfs_invalidate_buffer(tb, tbSh); return; } |
c3a9c2109 reiserfs: rework ... |
698 699 |
reiserfs_panic(tb->tb_sb, "ibalance-2", "unexpected tb->lnum[%d]==%d or tb->rnum[%d]==%d", |
bd4c625c0 reiserfs: run scr... |
700 701 |
h, tb->lnum[h], h, tb->rnum[h]); } |
1da177e4c Linux-2.6.12-rc2 |
702 703 |
/* Replace delimiting key of buffers L[h] and S[h] by the given key.*/ |
bd4c625c0 reiserfs: run scr... |
704 |
static void replace_lkey(struct tree_balance *tb, int h, struct item_head *key) |
1da177e4c Linux-2.6.12-rc2 |
705 |
{ |
bd4c625c0 reiserfs: run scr... |
706 707 708 |
RFALSE(tb->L[h] == NULL || tb->CFL[h] == NULL, "L[h](%p) and CFL[h](%p) must exist in replace_lkey", tb->L[h], tb->CFL[h]); |
1da177e4c Linux-2.6.12-rc2 |
709 |
|
bd4c625c0 reiserfs: run scr... |
710 711 |
if (B_NR_ITEMS(PATH_H_PBUFFER(tb->tb_path, h)) == 0) return; |
1da177e4c Linux-2.6.12-rc2 |
712 |
|
bd4c625c0 reiserfs: run scr... |
713 |
memcpy(B_N_PDELIM_KEY(tb->CFL[h], tb->lkey[h]), key, KEY_SIZE); |
1da177e4c Linux-2.6.12-rc2 |
714 |
|
bd4c625c0 reiserfs: run scr... |
715 |
do_balance_mark_internal_dirty(tb, tb->CFL[h], 0); |
1da177e4c Linux-2.6.12-rc2 |
716 |
} |
1da177e4c Linux-2.6.12-rc2 |
717 |
/* Replace delimiting key of buffers S[h] and R[h] by the given key.*/ |
bd4c625c0 reiserfs: run scr... |
718 |
static void replace_rkey(struct tree_balance *tb, int h, struct item_head *key) |
1da177e4c Linux-2.6.12-rc2 |
719 |
{ |
bd4c625c0 reiserfs: run scr... |
720 721 722 723 724 725 |
RFALSE(tb->R[h] == NULL || tb->CFR[h] == NULL, "R[h](%p) and CFR[h](%p) must exist in replace_rkey", tb->R[h], tb->CFR[h]); RFALSE(B_NR_ITEMS(tb->R[h]) == 0, "R[h] can not be empty if it exists (item number=%d)", B_NR_ITEMS(tb->R[h])); |
1da177e4c Linux-2.6.12-rc2 |
726 |
|
bd4c625c0 reiserfs: run scr... |
727 |
memcpy(B_N_PDELIM_KEY(tb->CFR[h], tb->rkey[h]), key, KEY_SIZE); |
1da177e4c Linux-2.6.12-rc2 |
728 |
|
bd4c625c0 reiserfs: run scr... |
729 |
do_balance_mark_internal_dirty(tb, tb->CFR[h], 0); |
1da177e4c Linux-2.6.12-rc2 |
730 |
} |
bd4c625c0 reiserfs: run scr... |
731 732 733 734 |
int balance_internal(struct tree_balance *tb, /* tree_balance structure */ int h, /* level of the tree */ int child_pos, struct item_head *insert_key, /* key for insertion on higher level */ struct buffer_head **insert_ptr /* node for insertion on higher level */ |
1da177e4c Linux-2.6.12-rc2 |
735 736 737 |
) /* if inserting/pasting { |
bd4c625c0 reiserfs: run scr... |
738 739 |
child_pos is the position of the node-pointer in S[h] that * pointed to S[h-1] before balancing of the h-1 level; * |
1da177e4c Linux-2.6.12-rc2 |
740 741 742 |
this means that new pointers and items must be inserted AFTER * child_pos } |
0222e6571 reiserfs: strip t... |
743 |
else |
1da177e4c Linux-2.6.12-rc2 |
744 |
{ |
bd4c625c0 reiserfs: run scr... |
745 746 747 748 749 |
it is the position of the leftmost pointer that must be deleted (together with its corresponding key to the left of the pointer) as a result of the previous level's balancing. } */ |
1da177e4c Linux-2.6.12-rc2 |
750 |
{ |
bd4c625c0 reiserfs: run scr... |
751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 |
struct buffer_head *tbSh = PATH_H_PBUFFER(tb->tb_path, h); struct buffer_info bi; int order; /* we return this: it is 0 if there is no S[h], else it is tb->S[h]->b_item_order */ int insert_num, n, k; struct buffer_head *S_new; struct item_head new_insert_key; struct buffer_head *new_insert_ptr = NULL; struct item_head *new_insert_key_addr = insert_key; RFALSE(h < 1, "h (%d) can not be < 1 on internal level", h); PROC_INFO_INC(tb->tb_sb, balance_at[h]); order = (tbSh) ? PATH_H_POSITION(tb->tb_path, h + 1) /*tb->S[h]->b_item_order */ : 0; /* Using insert_size[h] calculate the number insert_num of items that must be inserted to or deleted from S[h]. */ insert_num = tb->insert_size[h] / ((int)(KEY_SIZE + DC_SIZE)); /* Check whether insert_num is proper * */ RFALSE(insert_num < -2 || insert_num > 2, "incorrect number of items inserted to the internal node (%d)", insert_num); RFALSE(h > 1 && (insert_num > 1 || insert_num < -1), "incorrect number of items (%d) inserted to the internal node on a level (h=%d) higher than last internal level", insert_num, h); /* Make balance in case insert_num < 0 */ if (insert_num < 0) { balance_internal_when_delete(tb, h, child_pos); return order; |
1da177e4c Linux-2.6.12-rc2 |
784 |
} |
1da177e4c Linux-2.6.12-rc2 |
785 |
|
bd4c625c0 reiserfs: run scr... |
786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 |
k = 0; if (tb->lnum[h] > 0) { /* shift lnum[h] items from S[h] to the left neighbor L[h]. check how many of new items fall into L[h] or CFL[h] after shifting */ n = B_NR_ITEMS(tb->L[h]); /* number of items in L[h] */ if (tb->lnum[h] <= child_pos) { /* new items don't fall into L[h] or CFL[h] */ internal_shift_left(INTERNAL_SHIFT_FROM_S_TO_L, tb, h, tb->lnum[h]); /*internal_shift_left (tb->L[h],tb->CFL[h],tb->lkey[h],tbSh,tb->lnum[h]); */ child_pos -= tb->lnum[h]; } else if (tb->lnum[h] > child_pos + insert_num) { /* all new items fall into L[h] */ internal_shift_left(INTERNAL_SHIFT_FROM_S_TO_L, tb, h, tb->lnum[h] - insert_num); /* internal_shift_left(tb->L[h],tb->CFL[h],tb->lkey[h],tbSh, tb->lnum[h]-insert_num); */ /* insert insert_num keys and node-pointers into L[h] */ bi.tb = tb; bi.bi_bh = tb->L[h]; bi.bi_parent = tb->FL[h]; bi.bi_position = get_left_neighbor_position(tb, h); internal_insert_childs(&bi, /*tb->L[h], tb->S[h-1]->b_next */ n + child_pos + 1, insert_num, insert_key, insert_ptr); insert_num = 0; } else { struct disk_child *dc; /* some items fall into L[h] or CFL[h], but some don't fall */ internal_shift1_left(tb, h, child_pos + 1); /* calculate number of new items that fall into L[h] */ k = tb->lnum[h] - child_pos - 1; bi.tb = tb; bi.bi_bh = tb->L[h]; bi.bi_parent = tb->FL[h]; bi.bi_position = get_left_neighbor_position(tb, h); internal_insert_childs(&bi, /*tb->L[h], tb->S[h-1]->b_next, */ n + child_pos + 1, k, insert_key, insert_ptr); replace_lkey(tb, h, insert_key + k); /* replace the first node-ptr in S[h] by node-ptr to insert_ptr[k] */ dc = B_N_CHILD(tbSh, 0); put_dc_size(dc, MAX_CHILD_SIZE(insert_ptr[k]) - B_FREE_SPACE(insert_ptr[k])); put_dc_block_number(dc, insert_ptr[k]->b_blocknr); do_balance_mark_internal_dirty(tb, tbSh, 0); k++; insert_key += k; insert_ptr += k; insert_num -= k; child_pos = 0; } } /* tb->lnum[h] > 0 */ if (tb->rnum[h] > 0) { /*shift rnum[h] items from S[h] to the right neighbor R[h] */ /* check how many of new items fall into R or CFR after shifting */ n = B_NR_ITEMS(tbSh); /* number of items in S[h] */ if (n - tb->rnum[h] >= child_pos) /* new items fall into S[h] */ /*internal_shift_right(tb,h,tbSh,tb->CFR[h],tb->rkey[h],tb->R[h],tb->rnum[h]); */ internal_shift_right(INTERNAL_SHIFT_FROM_S_TO_R, tb, h, tb->rnum[h]); else if (n + insert_num - tb->rnum[h] < child_pos) { /* all new items fall into R[h] */ /*internal_shift_right(tb,h,tbSh,tb->CFR[h],tb->rkey[h],tb->R[h], tb->rnum[h] - insert_num); */ internal_shift_right(INTERNAL_SHIFT_FROM_S_TO_R, tb, h, tb->rnum[h] - insert_num); /* insert insert_num keys and node-pointers into R[h] */ bi.tb = tb; bi.bi_bh = tb->R[h]; bi.bi_parent = tb->FR[h]; bi.bi_position = get_right_neighbor_position(tb, h); internal_insert_childs(&bi, /*tb->R[h],tb->S[h-1]->b_next */ child_pos - n - insert_num + tb->rnum[h] - 1, insert_num, insert_key, insert_ptr); insert_num = 0; } else { struct disk_child *dc; /* one of the items falls into CFR[h] */ internal_shift1_right(tb, h, n - child_pos + 1); /* calculate number of new items that fall into R[h] */ k = tb->rnum[h] - n + child_pos - 1; bi.tb = tb; bi.bi_bh = tb->R[h]; bi.bi_parent = tb->FR[h]; bi.bi_position = get_right_neighbor_position(tb, h); internal_insert_childs(&bi, /*tb->R[h], tb->R[h]->b_child, */ 0, k, insert_key + 1, insert_ptr + 1); replace_rkey(tb, h, insert_key + insert_num - k - 1); /* replace the first node-ptr in R[h] by node-ptr insert_ptr[insert_num-k-1] */ dc = B_N_CHILD(tb->R[h], 0); put_dc_size(dc, MAX_CHILD_SIZE(insert_ptr [insert_num - k - 1]) - B_FREE_SPACE(insert_ptr [insert_num - k - 1])); put_dc_block_number(dc, insert_ptr[insert_num - k - 1]->b_blocknr); do_balance_mark_internal_dirty(tb, tb->R[h], 0); insert_num -= (k + 1); } } |
1da177e4c Linux-2.6.12-rc2 |
914 |
|
bd4c625c0 reiserfs: run scr... |
915 916 917 |
/** Fill new node that appears instead of S[h] **/ RFALSE(tb->blknum[h] > 2, "blknum can not be > 2 for internal level"); RFALSE(tb->blknum[h] < 0, "blknum can not be < 0"); |
1da177e4c Linux-2.6.12-rc2 |
918 |
|
bd4c625c0 reiserfs: run scr... |
919 920 |
if (!tb->blknum[h]) { /* node S[h] is empty now */ RFALSE(!tbSh, "S[h] is equal NULL"); |
1da177e4c Linux-2.6.12-rc2 |
921 |
|
bd4c625c0 reiserfs: run scr... |
922 923 924 925 |
/* do what is needed for buffer thrown from tree */ reiserfs_invalidate_buffer(tb, tbSh); return order; } |
1da177e4c Linux-2.6.12-rc2 |
926 |
|
bd4c625c0 reiserfs: run scr... |
927 928 929 930 931 |
if (!tbSh) { /* create new root */ struct disk_child *dc; struct buffer_head *tbSh_1 = PATH_H_PBUFFER(tb->tb_path, h - 1); struct block_head *blkh; |
1da177e4c Linux-2.6.12-rc2 |
932 |
|
bd4c625c0 reiserfs: run scr... |
933 |
if (tb->blknum[h] != 1) |
c3a9c2109 reiserfs: rework ... |
934 935 |
reiserfs_panic(NULL, "ibalance-3", "One new node " "required for creating the new root"); |
bd4c625c0 reiserfs: run scr... |
936 937 938 939 |
/* S[h] = empty buffer from the list FEB. */ tbSh = get_FEB(tb); blkh = B_BLK_HEAD(tbSh); set_blkh_level(blkh, h + 1); |
1da177e4c Linux-2.6.12-rc2 |
940 |
|
bd4c625c0 reiserfs: run scr... |
941 942 943 944 945 946 947 948 949 |
/* Put the unique node-pointer to S[h] that points to S[h-1]. */ dc = B_N_CHILD(tbSh, 0); put_dc_block_number(dc, tbSh_1->b_blocknr); put_dc_size(dc, (MAX_CHILD_SIZE(tbSh_1) - B_FREE_SPACE(tbSh_1))); tb->insert_size[h] -= DC_SIZE; set_blkh_free_space(blkh, blkh_free_space(blkh) - DC_SIZE); |
1da177e4c Linux-2.6.12-rc2 |
950 |
|
bd4c625c0 reiserfs: run scr... |
951 |
do_balance_mark_internal_dirty(tb, tbSh, 0); |
1da177e4c Linux-2.6.12-rc2 |
952 |
|
bd4c625c0 reiserfs: run scr... |
953 954 955 956 957 958 959 960 961 962 963 964 |
/*&&&&&&&&&&&&&&&&&&&&&&&& */ check_internal(tbSh); /*&&&&&&&&&&&&&&&&&&&&&&&& */ /* put new root into path structure */ PATH_OFFSET_PBUFFER(tb->tb_path, ILLEGAL_PATH_ELEMENT_OFFSET) = tbSh; /* Change root in structure super block. */ PUT_SB_ROOT_BLOCK(tb->tb_sb, tbSh->b_blocknr); PUT_SB_TREE_HEIGHT(tb->tb_sb, SB_TREE_HEIGHT(tb->tb_sb) + 1); do_balance_mark_sb_dirty(tb, REISERFS_SB(tb->tb_sb)->s_sbh, 1); |
1da177e4c Linux-2.6.12-rc2 |
965 |
} |
bd4c625c0 reiserfs: run scr... |
966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 |
if (tb->blknum[h] == 2) { int snum; struct buffer_info dest_bi, src_bi; /* S_new = free buffer from list FEB */ S_new = get_FEB(tb); set_blkh_level(B_BLK_HEAD(S_new), h + 1); dest_bi.tb = tb; dest_bi.bi_bh = S_new; dest_bi.bi_parent = NULL; dest_bi.bi_position = 0; src_bi.tb = tb; src_bi.bi_bh = tbSh; src_bi.bi_parent = PATH_H_PPARENT(tb->tb_path, h); src_bi.bi_position = PATH_H_POSITION(tb->tb_path, h + 1); n = B_NR_ITEMS(tbSh); /* number of items in S[h] */ snum = (insert_num + n + 1) / 2; if (n - snum >= child_pos) { /* new items don't fall into S_new */ /* store the delimiting key for the next level */ /* new_insert_key = (n - snum)'th key in S[h] */ memcpy(&new_insert_key, B_N_PDELIM_KEY(tbSh, n - snum), KEY_SIZE); /* last parameter is del_par */ internal_move_pointers_items(&dest_bi, &src_bi, LAST_TO_FIRST, snum, 0); /* internal_move_pointers_items(S_new, tbSh, LAST_TO_FIRST, snum, 0); */ } else if (n + insert_num - snum < child_pos) { /* all new items fall into S_new */ /* store the delimiting key for the next level */ /* new_insert_key = (n + insert_item - snum)'th key in S[h] */ memcpy(&new_insert_key, B_N_PDELIM_KEY(tbSh, n + insert_num - snum), KEY_SIZE); /* last parameter is del_par */ internal_move_pointers_items(&dest_bi, &src_bi, LAST_TO_FIRST, snum - insert_num, 0); /* internal_move_pointers_items(S_new,tbSh,1,snum - insert_num,0); */ /* insert insert_num keys and node-pointers into S_new */ internal_insert_childs(&dest_bi, /*S_new,tb->S[h-1]->b_next, */ child_pos - n - insert_num + snum - 1, insert_num, insert_key, insert_ptr); insert_num = 0; } else { struct disk_child *dc; /* some items fall into S_new, but some don't fall */ /* last parameter is del_par */ internal_move_pointers_items(&dest_bi, &src_bi, LAST_TO_FIRST, n - child_pos + 1, 1); /* internal_move_pointers_items(S_new,tbSh,1,n - child_pos + 1,1); */ /* calculate number of new items that fall into S_new */ k = snum - n + child_pos - 1; internal_insert_childs(&dest_bi, /*S_new, */ 0, k, insert_key + 1, insert_ptr + 1); /* new_insert_key = insert_key[insert_num - k - 1] */ memcpy(&new_insert_key, insert_key + insert_num - k - 1, KEY_SIZE); /* replace first node-ptr in S_new by node-ptr to insert_ptr[insert_num-k-1] */ dc = B_N_CHILD(S_new, 0); put_dc_size(dc, (MAX_CHILD_SIZE (insert_ptr[insert_num - k - 1]) - B_FREE_SPACE(insert_ptr [insert_num - k - 1]))); put_dc_block_number(dc, insert_ptr[insert_num - k - 1]->b_blocknr); do_balance_mark_internal_dirty(tb, S_new, 0); insert_num -= (k + 1); } /* new_insert_ptr = node_pointer to S_new */ new_insert_ptr = S_new; RFALSE(!buffer_journaled(S_new) || buffer_journal_dirty(S_new) || buffer_dirty(S_new), "cm-00001: bad S_new (%b)", S_new); // S_new is released in unfix_nodes |
1da177e4c Linux-2.6.12-rc2 |
1061 |
} |
bd4c625c0 reiserfs: run scr... |
1062 |
n = B_NR_ITEMS(tbSh); /*number of items in S[h] */ |
1da177e4c Linux-2.6.12-rc2 |
1063 |
|
bd4c625c0 reiserfs: run scr... |
1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 |
if (0 <= child_pos && child_pos <= n && insert_num > 0) { bi.tb = tb; bi.bi_bh = tbSh; bi.bi_parent = PATH_H_PPARENT(tb->tb_path, h); bi.bi_position = PATH_H_POSITION(tb->tb_path, h + 1); internal_insert_childs(&bi, /*tbSh, */ /* ( tb->S[h-1]->b_parent == tb->S[h] ) ? tb->S[h-1]->b_next : tb->S[h]->b_child->b_next, */ child_pos, insert_num, insert_key, insert_ptr); } memcpy(new_insert_key_addr, &new_insert_key, KEY_SIZE); |
1da177e4c Linux-2.6.12-rc2 |
1076 1077 1078 |
insert_ptr[0] = new_insert_ptr; return order; |
bd4c625c0 reiserfs: run scr... |
1079 |
} |