/*
@dev_type : BCH_TYPE or NEMC_TYPE
@init_flag: 0 open parameter
1 init parameter
*/
ref_info *add_ref_info(int dev_type, int dev_id, int init_flag)
{
struct list_head *pos;
ref_info *refinfo = NULL;
if (top == NULL){
top = ndd_alloc(sizeof(ref_info));
INIT_LIST_HEAD(top);
ndd_debug("reflist top is created\n");
}
if(top->prev == top && top->next == top){
new:
refinfo = alloc_new_node(dev_type,dev_id,init_flag);
list_add_tail(&refinfo->head,top);
ndd_debug("add :%d refinfo=%p \n",__LINE__,refinfo);
}else{
/* dn->node_block should be writable */
int truncate_data_blocks_range(struct dnode_of_data *dn, int count)
{
int nr_free = 0, ofs = dn->ofs_in_node;
struct hmfs_sb_info *sbi = HMFS_SB(dn->inode->i_sb);
struct hmfs_node *raw_node = (struct hmfs_node *)dn->node_block;
struct hmfs_node *new_node = NULL;
void *data_blk;
block_t addr;
nid_t nid;
char sum_type;
nid = le32_to_cpu(raw_node->footer.nid);
sum_type = dn->level ? SUM_TYPE_DN : SUM_TYPE_INODE;
new_node = alloc_new_node(sbi, nid, dn->inode, sum_type);
if (IS_ERR(new_node))
return PTR_ERR(new_node);
for (; count > 0; count--, ofs++) {
if (dn->level)
addr = raw_node->dn.addr[ofs];
else
addr = raw_node->i.i_addr[ofs];
if (addr == NULL_ADDR)
continue;
data_blk = ADDR(sbi, addr);
if (dn->level)
new_node->dn.addr[ofs] = NULL_ADDR;
else
new_node->i.i_addr[ofs] = NULL_ADDR;
setup_summary_of_delete_block(sbi, addr);
nr_free++;
}
if (nr_free) {
dec_valid_block_count(sbi, dn->inode, nr_free);
mark_inode_dirty(dn->inode);
}
return nr_free;
}