310 	struct disk_header *dh;  in read_header()  local
340 	dh = ps->header_area;  in read_header()
342 	if (le32_to_cpu(dh->magic) == 0) {  in read_header()
347 	if (le32_to_cpu(dh->magic) != SNAP_MAGIC) {  in read_header()
354 	ps->valid = le32_to_cpu(dh->valid);  in read_header()
355 	ps->version = le32_to_cpu(dh->version);  in read_header()
356 	chunk_size = le32_to_cpu(dh->chunk_size);  in read_header()
387 	struct disk_header *dh;  in write_header()  local
391 	dh = ps->header_area;  in write_header()
392 	dh->magic = cpu_to_le32(SNAP_MAGIC);  in write_header()
393 	dh->valid = cpu_to_le32(ps->valid);  in write_header()
394 	dh->version = cpu_to_le32(ps->version);  in write_header()
395 	dh->chunk_size = cpu_to_le32(ps->store->chunk_size);  in write_header()