dx_tail
int count_offset, int count, struct dx_tail *t)
int offset = offsetof(struct dx_tail, dt_checksum);
struct dx_tail *t;
EXT4_BLOCK_SIZE(inode->i_sb) - sizeof(struct dx_tail)) {
t = (struct dx_tail *)(((struct dx_entry *)c) + limit);
struct dx_tail *t;
EXT4_BLOCK_SIZE(inode->i_sb) - sizeof(struct dx_tail)) {
t = (struct dx_tail *)(((struct dx_entry *)c) + limit);
entry_space -= sizeof(struct dx_tail);
entry_space -= sizeof(struct dx_tail);