reiserfs: cleanup, reformat comments to normal kernel style
[linux-2.6-block.git] / fs / reiserfs / ibalance.c
index e1978fd895f559743672d5ebd029f42d32d6112b..c4a6967141489ea8297b9e98d190be17ded99745 100644 (file)
 int balance_internal(struct tree_balance *,
                     int, int, struct item_head *, struct buffer_head **);
 
-/* modes of internal_shift_left, internal_shift_right and internal_insert_childs */
+/*
+ * 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
@@ -32,7 +35,9 @@ static void internal_define_dest_src_infos(int shift_mode,
        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 */
+
+       /* used in internal_shift_left */
+       case INTERNAL_SHIFT_FROM_S_TO_L:
                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);
@@ -52,12 +57,14 @@ static void internal_define_dest_src_infos(int shift_mode,
                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 */
+               /* dest position is analog of dest->b_item_order */
+               dest_bi->bi_position = PATH_H_POSITION(tb->tb_path, h + 1);
                *d_key = tb->lkey[h];
                *cf = tb->CFL[h];
                break;
 
-       case INTERNAL_SHIFT_FROM_R_TO_S:        /* used in internal_shift_left */
+       /* used in internal_shift_left */
+       case INTERNAL_SHIFT_FROM_R_TO_S:
                src_bi->tb = tb;
                src_bi->bi_bh = tb->R[h];
                src_bi->bi_parent = tb->FR[h];
@@ -111,7 +118,8 @@ static void internal_define_dest_src_infos(int shift_mode,
        }
 }
 
-/* Insert count node pointers into buffer cur before position to + 1.
+/*
+ * 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.
  */
@@ -153,7 +161,7 @@ static void internal_insert_childs(struct buffer_info *cur_bi,
        memcpy(dc, new_dc, DC_SIZE * count);
 
        /* prepare space for count items  */
-       ih = B_N_PDELIM_KEY(cur, ((to == -1) ? 0 : to));
+       ih = internal_key(cur, ((to == -1) ? 0 : to));
 
        memmove(ih + count, ih,
                (nr - to) * KEY_SIZE + (nr + 1 + count) * DC_SIZE);
@@ -190,8 +198,10 @@ static void internal_insert_childs(struct buffer_info *cur_bi,
 
 }
 
-/* Delete del_num items and node pointers from buffer cur starting from *
- * the first_i'th item and first_p'th pointers respectively.           */
+/*
+ * Delete del_num items and node pointers from buffer cur starting from
+ * the first_i'th item and first_p'th pointers respectively.
+ */
 static void internal_delete_pointers_items(struct buffer_info *cur_bi,
                                           int first_p,
                                           int first_i, int del_num)
@@ -233,7 +243,7 @@ static void internal_delete_pointers_items(struct buffer_info *cur_bi,
        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);
+       key = internal_key(cur, first_i);
        memmove(key, key + del_num,
                (nr - first_i - del_num) * KEY_SIZE + (nr + 1 -
                                                       del_num) * DC_SIZE);
@@ -270,22 +280,30 @@ static void internal_delete_childs(struct buffer_info *cur_bi, int from, int n)
 
        i_from = (from == 0) ? from : from - 1;
 
-       /* delete n pointers starting from `from' position in CUR;
-          delete n keys starting from 'i_from' position in CUR;
+       /*
+        * 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);
 }
 
-/* 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
- * last_first == LAST_TO_FIRST means, that we copy last items from src to head of dest
+/*
+ * 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
+ * last_first == LAST_TO_FIRST means that we copy last items
+ *                             from src to head of dest
  */
 static void internal_copy_pointers_items(struct buffer_info *dest_bi,
                                         struct buffer_head *src,
                                         int last_first, int cpy_num)
 {
-       /* ATTENTION! Number of node pointers in DEST is equal to number of items in DEST *
-        * as delimiting key have already inserted to buffer dest.*/
+       /*
+        * 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;
@@ -330,13 +348,13 @@ static void internal_copy_pointers_items(struct buffer_info *dest_bi,
        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);
+       key = internal_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));
+       memcpy(key, internal_key(src, src_order), KEY_SIZE * (cpy_num - 1));
 
        /* sizes, item number */
        set_blkh_nr_item(blkh, blkh_nr_item(blkh) + (cpy_num - 1));
@@ -366,7 +384,9 @@ static void internal_copy_pointers_items(struct buffer_info *dest_bi,
 
 }
 
-/* Copy cpy_num node pointers and cpy_num - 1 items from buffer src to buffer dest.
+/*
+ * 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.
@@ -385,8 +405,10 @@ static void internal_move_pointers_items(struct buffer_info *dest_bi,
        if (last_first == FIRST_TO_LAST) {      /* shift_left occurs */
                first_pointer = 0;
                first_item = 0;
-               /* delete cpy_num - del_par pointers and keys starting for pointers with first_pointer,
-                  for key - with first_item */
+               /*
+                * delete cpy_num - del_par pointers and keys starting for
+                * pointers with first_pointer, for key - with first_item
+                */
                internal_delete_pointers_items(src_bi, first_pointer,
                                               first_item, cpy_num - del_par);
        } else {                /* shift_right occurs */
@@ -404,7 +426,9 @@ static void internal_move_pointers_items(struct buffer_info *dest_bi,
 }
 
 /* Insert n_src'th key of buffer src before n_dest'th key of buffer dest. */
-static void internal_insert_key(struct buffer_info *dest_bi, int dest_position_before, /* insert key before key with n_dest number */
+static void internal_insert_key(struct buffer_info *dest_bi,
+                               /* insert key before key with n_dest number */
+                               int dest_position_before,
                                struct buffer_head *src, int src_position)
 {
        struct buffer_head *dest = dest_bi->bi_bh;
@@ -429,12 +453,12 @@ static void internal_insert_key(struct buffer_info *dest_bi, int dest_position_b
        nr = blkh_nr_item(blkh);
 
        /* prepare space for inserting key */
-       key = B_N_PDELIM_KEY(dest, dest_position_before);
+       key = internal_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);
+       memcpy(key, internal_key(src, src_position), KEY_SIZE);
 
        /* Change dirt, free space, item number fields. */
 
@@ -453,13 +477,19 @@ static void internal_insert_key(struct buffer_info *dest_bi, int dest_position_b
        }
 }
 
-/* Insert d_key'th (delimiting) key from buffer cfl to tail of dest.
- * Copy pointer_amount node pointers and pointer_amount - 1 items from buffer src to buffer dest.
+/*
+ * Insert d_key'th (delimiting) key from buffer cfl to tail of dest.
+ * 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 */
-static void internal_shift_left(int mode,      /* INTERNAL_FROM_S_TO_L | INTERNAL_FROM_R_TO_S */
+static void internal_shift_left(
+                               /*
+                                * INTERNAL_FROM_S_TO_L | INTERNAL_FROM_R_TO_S
+                                */
+                               int mode,
                                struct tree_balance *tb,
                                int h, int pointer_amount)
 {
@@ -473,7 +503,10 @@ static void internal_shift_left(int mode,  /* INTERNAL_FROM_S_TO_L | INTERNAL_FRO
        /*printk("pointer_amount = %d\n",pointer_amount); */
 
        if (pointer_amount) {
-               /* insert delimiting key from common father of dest and src to node dest into position B_NR_ITEM(dest) */
+               /*
+                * 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);
 
@@ -492,7 +525,8 @@ static void internal_shift_left(int mode,   /* INTERNAL_FROM_S_TO_L | INTERNAL_FRO
 
 }
 
-/* Insert delimiting key to L[h].
+/*
+ * 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].
  */
@@ -507,23 +541,27 @@ static void internal_shift1_left(struct tree_balance *tb,
        internal_define_dest_src_infos(INTERNAL_SHIFT_FROM_S_TO_L, tb, h,
                                       &dest_bi, &src_bi, &d_key_position, &cf);
 
-       if (pointer_amount > 0) /* insert lkey[h]-th key  from CFL[h] to left neighbor L[h] */
+       /* insert lkey[h]-th key  from CFL[h] to left neighbor L[h] */
+       if (pointer_amount > 0)
                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]); */
 
        /* 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); */
 }
 
-/* Insert d_key'th (delimiting) key from buffer cfr to head of dest.
+/*
+ * Insert d_key'th (delimiting) key from buffer cfr to head of dest.
  * 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.
  */
-static void internal_shift_right(int mode,     /* INTERNAL_FROM_S_TO_R | INTERNAL_FROM_L_TO_S */
+static void internal_shift_right(
+                                /*
+                                 * INTERNAL_FROM_S_TO_R | INTERNAL_FROM_L_TO_S
+                                 */
+                                int mode,
                                 struct tree_balance *tb,
                                 int h, int pointer_amount)
 {
@@ -538,7 +576,10 @@ static void internal_shift_right(int mode, /* INTERNAL_FROM_S_TO_R | INTERNAL_FR
        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 */
+               /*
+                * 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] */ ||
@@ -559,7 +600,8 @@ static void internal_shift_right(int mode,  /* INTERNAL_FROM_S_TO_R | INTERNAL_FR
                                     pointer_amount, 0);
 }
 
-/* Insert delimiting key to R[h].
+/*
+ * 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].
  */
@@ -574,18 +616,19 @@ static void internal_shift1_right(struct tree_balance *tb,
        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] */
+       /* insert rkey from CFR[h] to right neighbor R[h] */
+       if (pointer_amount > 0)
                internal_insert_key(&dest_bi, 0, cf, d_key_position);
-       /*            internal_insert_key (tb->R[h], 0, tb->CFR[h], tb->rkey[h]); */
 
        /* 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); */
 }
 
-/* Delete insert_num node pointers together with their left items
- * and balance current node.*/
+/*
+ * Delete insert_num node pointers together with their left items
+ * and balance current node.
+ */
 static void balance_internal_when_delete(struct tree_balance *tb,
                                         int h, int child_pos)
 {
@@ -626,9 +669,11 @@ static void balance_internal_when_delete(struct tree_balance *tb,
                                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 */
+                       /*
+                        * 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 --;
+                       /*REISERFS_SB(tb->tb_sb)->s_rs->s_tree_height --; */
                        PUT_SB_TREE_HEIGHT(tb->tb_sb,
                                           SB_TREE_HEIGHT(tb->tb_sb) - 1);
 
@@ -636,8 +681,8 @@ static void balance_internal_when_delete(struct tree_balance *tb,
                                                 REISERFS_SB(tb->tb_sb)->s_sbh,
                                                 1);
                        /*&&&&&&&&&&&&&&&&&&&&&& */
+                       /* use check_internal if new root is an internal node */
                        if (h > 1)
-                               /* use check_internal if new root is an internal node */
                                check_internal(new_root);
                        /*&&&&&&&&&&&&&&&&&&&&&& */
 
@@ -648,7 +693,8 @@ static void balance_internal_when_delete(struct tree_balance *tb,
                return;
        }
 
-       if (tb->L[h] && tb->lnum[h] == -B_NR_ITEMS(tb->L[h]) - 1) {     /* join S[h] with L[h] */
+       /* join S[h] with L[h] */
+       if (tb->L[h] && tb->lnum[h] == -B_NR_ITEMS(tb->L[h]) - 1) {
 
                RFALSE(tb->rnum[h] != 0,
                       "invalid tb->rnum[%d]==%d when joining S[h] with L[h]",
@@ -660,7 +706,8 @@ static void balance_internal_when_delete(struct tree_balance *tb,
                return;
        }
 
-       if (tb->R[h] && tb->rnum[h] == -B_NR_ITEMS(tb->R[h]) - 1) {     /* join S[h] with R[h] */
+       /* join S[h] with R[h] */
+       if (tb->R[h] && tb->rnum[h] == -B_NR_ITEMS(tb->R[h]) - 1) {
                RFALSE(tb->lnum[h] != 0,
                       "invalid tb->lnum[%d]==%d when joining S[h] with R[h]",
                       h, tb->lnum[h]);
@@ -671,17 +718,18 @@ static void balance_internal_when_delete(struct tree_balance *tb,
                return;
        }
 
-       if (tb->lnum[h] < 0) {  /* borrow from left neighbor L[h] */
+       /* borrow from left neighbor L[h] */
+       if (tb->lnum[h] < 0) {
                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] */
+       /* borrow from right neighbor R[h] */
+       if (tb->rnum[h] < 0) {
                RFALSE(tb->lnum[h] != 0,
                       "invalid tb->lnum[%d]==%d when borrow from R[h]",
                       h, tb->lnum[h]);
@@ -689,7 +737,8 @@ static void balance_internal_when_delete(struct tree_balance *tb,
                return;
        }
 
-       if (tb->lnum[h] > 0) {  /* split S[h] into two parts and put them into neighbors */
+       /* split S[h] into two parts and put them into neighbors */
+       if (tb->lnum[h] > 0) {
                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);
@@ -717,7 +766,7 @@ static void replace_lkey(struct tree_balance *tb, int h, struct item_head *key)
        if (B_NR_ITEMS(PATH_H_PBUFFER(tb->tb_path, h)) == 0)
                return;
 
-       memcpy(B_N_PDELIM_KEY(tb->CFL[h], tb->lkey[h]), key, KEY_SIZE);
+       memcpy(internal_key(tb->CFL[h], tb->lkey[h]), key, KEY_SIZE);
 
        do_balance_mark_internal_dirty(tb, tb->CFL[h], 0);
 }
@@ -732,34 +781,41 @@ static void replace_rkey(struct tree_balance *tb, int h, struct item_head *key)
               "R[h] can not be empty if it exists (item number=%d)",
               B_NR_ITEMS(tb->R[h]));
 
-       memcpy(B_N_PDELIM_KEY(tb->CFR[h], tb->rkey[h]), key, KEY_SIZE);
+       memcpy(internal_key(tb->CFR[h], tb->rkey[h]), key, KEY_SIZE);
 
        do_balance_mark_internal_dirty(tb, tb->CFR[h], 0);
 }
 
-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 */
-    )
-    /* if inserting/pasting
-       {
-       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;              *
-       this means that new pointers and items must be inserted AFTER *
-       child_pos
-       }
-       else
-       {
-       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.
-       }
-     */
+
+/*
+ * if inserting/pasting {
+ *   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;
+ *   this means that new pointers and items must be inserted AFTER
+ *   child_pos
+ * } else {
+ *   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.
+ * }
+ */
+
+int balance_internal(struct tree_balance *tb,
+                    int h,     /* level of the tree */
+                    int child_pos,
+                    /* key for insertion on higher level    */
+                    struct item_head *insert_key,
+                    /* node for insertion on higher level */
+                    struct buffer_head **insert_ptr)
 {
        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 */
+
+       /*
+        * we return this: it is 0 if there is no S[h],
+        * else it is tb->S[h]->b_item_order
+        */
+       int order;
        int insert_num, n, k;
        struct buffer_head *S_new;
        struct item_head new_insert_key;
@@ -774,8 +830,10 @@ int balance_internal(struct tree_balance *tb,      /* tree_balance structure
            (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]. */
+       /*
+        * 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 * */
@@ -794,23 +852,21 @@ int balance_internal(struct tree_balance *tb,     /* tree_balance structure
 
        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 */
+               /*
+                * 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];
@@ -826,7 +882,10 @@ int balance_internal(struct tree_balance *tb,      /* tree_balance structure
                } else {
                        struct disk_child *dc;
 
-                       /* some items fall into L[h] or CFL[h], but some don't fall */
+                       /*
+                        * 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;
@@ -841,7 +900,10 @@ int balance_internal(struct tree_balance *tb,      /* tree_balance structure
 
                        replace_lkey(tb, h, insert_key + k);
 
-                       /* replace the first node-ptr in S[h] by node-ptr to insert_ptr[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]) -
@@ -860,17 +922,17 @@ int balance_internal(struct tree_balance *tb,     /* tree_balance structure
        /* 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 */
+               /*
+                * 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);
 
@@ -904,7 +966,10 @@ int balance_internal(struct tree_balance *tb,      /* tree_balance structure
 
                        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] */
+                       /*
+                        * 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
@@ -921,7 +986,7 @@ int balance_internal(struct tree_balance *tb,       /* tree_balance structure
                }
        }
 
-    /** Fill new node that appears instead of S[h] **/
+       /** 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");
 
@@ -997,26 +1062,30 @@ int balance_internal(struct tree_balance *tb,    /* tree_balance structure
                        /* 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),
+                       memcpy(&new_insert_key, internal_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] */
+                       /*
+                        * 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),
+                              internal_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 */
+                       /*
+                        * 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 +
@@ -1033,7 +1102,6 @@ int balance_internal(struct tree_balance *tb,     /* tree_balance structure
                        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;
 
@@ -1043,7 +1111,10 @@ int balance_internal(struct tree_balance *tb,    /* tree_balance structure
                        /* 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] */
+                       /*
+                        * 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,
@@ -1066,7 +1137,7 @@ int balance_internal(struct tree_balance *tb,     /* tree_balance structure
                       || buffer_dirty(S_new), "cm-00001: bad S_new (%b)",
                       S_new);
 
-               // S_new is released in unfix_nodes
+               /* S_new is released in unfix_nodes */
        }
 
        n = B_NR_ITEMS(tbSh);   /*number of items in S[h] */