/* Append . and .. entries */
int nova_append_dir_init_entries(struct super_block *sb,
struct nova_inode *pi, u64 self_ino, u64 parent_ino)
{
int allocated;
u64 new_block;
u64 curr_p;
struct nova_dentry *de_entry;
if (pi->log_head) {
nova_dbg("%s: log head exists @ 0x%llx!\n",
__func__, pi->log_head);
return - EINVAL;
}
allocated = nova_allocate_inode_log_pages(sb, pi, 1, &new_block);
if (allocated != 1) {
nova_err(sb, "ERROR: no inode log page available\n");
return - ENOMEM;
}
pi->log_tail = pi->log_head = new_block;
pi->i_blocks = 1;
nova_flush_buffer(&pi->log_head, CACHELINE_SIZE, 0);
de_entry = (struct nova_dentry *)nova_get_block(sb, new_block);
de_entry->entry_type = DIR_LOG;
de_entry->ino = cpu_to_le64(self_ino);
de_entry->name_len = 1;
de_entry->de_len = cpu_to_le16(NOVA_DIR_LOG_REC_LEN(1));
de_entry->mtime = CURRENT_TIME_SEC.tv_sec;
de_entry->size = sb->s_blocksize;
de_entry->links_count = 1;
strncpy(de_entry->name, ".\0", 2);
nova_flush_buffer(de_entry, NOVA_DIR_LOG_REC_LEN(1), 0);
curr_p = new_block + NOVA_DIR_LOG_REC_LEN(1);
de_entry = (struct nova_dentry *)((char *)de_entry +
le16_to_cpu(de_entry->de_len));
de_entry->entry_type = DIR_LOG;
de_entry->ino = cpu_to_le64(parent_ino);
de_entry->name_len = 2;
de_entry->de_len = cpu_to_le16(NOVA_DIR_LOG_REC_LEN(2));
de_entry->mtime = CURRENT_TIME_SEC.tv_sec;
de_entry->size = sb->s_blocksize;
de_entry->links_count = 2;
strncpy(de_entry->name, "..\0", 3);
nova_flush_buffer(de_entry, NOVA_DIR_LOG_REC_LEN(2), 0);
curr_p += NOVA_DIR_LOG_REC_LEN(2);
nova_update_tail(pi, curr_p);
return 0;
}
void nova_save_inode_list_to_log(struct super_block *sb)
{
struct nova_inode *pi = nova_get_inode_by_ino(sb, NOVA_INODELIST1_INO);
struct nova_sb_info *sbi = NOVA_SB(sb);
unsigned long num_blocks;
unsigned long num_nodes = 0;
struct inode_map *inode_map;
unsigned long i;
u64 temp_tail;
u64 new_block;
int allocated;
for (i = 0; i < sbi->cpus; i++) {
inode_map = &sbi->inode_maps[i];
num_nodes += inode_map->num_range_node_inode;
}
num_blocks = num_nodes / RANGENODE_PER_PAGE;
if (num_nodes % RANGENODE_PER_PAGE)
num_blocks++;
allocated = nova_allocate_inode_log_pages(sb, pi, num_blocks,
&new_block);
if (allocated != num_blocks) {
nova_dbg("Error saving inode list: %d\n", allocated);
return;
}
pi->log_head = new_block;
nova_flush_buffer(&pi->log_head, CACHELINE_SIZE, 0);
temp_tail = new_block;
for (i = 0; i < sbi->cpus; i++) {
inode_map = &sbi->inode_maps[i];
temp_tail = nova_save_range_nodes_to_log(sb,
&inode_map->inode_inuse_tree, temp_tail, i);
}
nova_update_tail(pi, temp_tail);
nova_dbg("%s: %lu inode nodes, pi head 0x%llx, tail 0x%llx\n",
__func__, num_nodes, pi->log_head, pi->log_tail);
}
void nova_save_blocknode_mappings_to_log(struct super_block *sb)
{
struct nova_inode *pi = nova_get_inode_by_ino(sb, NOVA_BLOCKNODE_INO);
struct nova_sb_info *sbi = NOVA_SB(sb);
struct nova_super_block *super;
struct free_list *free_list;
unsigned long num_blocknode = 0;
unsigned long num_pages;
int allocated;
u64 new_block = 0;
u64 temp_tail;
int i;
/* Allocate log pages before save blocknode mappings */
for (i = 0; i < sbi->cpus; i++) {
free_list = nova_get_free_list(sb, i);
num_blocknode += free_list->num_blocknode;
nova_dbgv("%s: free list %d: %lu nodes\n", __func__,
i, free_list->num_blocknode);
}
free_list = nova_get_free_list(sb, SHARED_CPU);
num_blocknode += free_list->num_blocknode;
nova_dbgv("%s: shared list: %lu nodes\n", __func__,
free_list->num_blocknode);
num_pages = num_blocknode / RANGENODE_PER_PAGE;
if (num_blocknode % RANGENODE_PER_PAGE)
num_pages++;
allocated = nova_allocate_inode_log_pages(sb, pi, num_pages,
&new_block);
if (allocated != num_pages) {
nova_dbg("Error saving blocknode mappings: %d\n", allocated);
return;
}
/*
* save the total allocated blocknode mappings
* in super block
* No transaction is needed as we will recover the fields
* via failure recovery
*/
super = nova_get_super(sb);
nova_memunlock_range(sb, &super->s_wtime, NOVA_FAST_MOUNT_FIELD_SIZE);
super->s_wtime = cpu_to_le32(get_seconds());
nova_memlock_range(sb, &super->s_wtime, NOVA_FAST_MOUNT_FIELD_SIZE);
nova_flush_buffer(super, NOVA_SB_SIZE, 0);
/* Finally update log head and tail */
pi->log_head = new_block;
nova_flush_buffer(&pi->log_head, CACHELINE_SIZE, 0);
temp_tail = new_block;
for (i = 0; i < sbi->cpus; i++) {
temp_tail = nova_save_free_list_blocknodes(sb, i, temp_tail);
}
temp_tail = nova_save_free_list_blocknodes(sb, SHARED_CPU, temp_tail);
nova_update_tail(pi, temp_tail);
nova_dbg("%s: %lu blocknodes, %lu log pages, pi head 0x%llx, "
"tail 0x%llx\n", __func__, num_blocknode, num_pages,
pi->log_head, pi->log_tail);
}
