return 0; 
return NULL; 
static kimage_entry_t *kimage_dst_used(struct kimage *image,					unsigned long page){	kimage_entry_t *ptr, entry;	unsigned long destination = 0;	for_each_kimage_entry(image, ptr, entry) {		if (entry & IND_DESTINATION)			destination = entry & PAGE_MASK;		else if (entry & IND_SOURCE) {			if (page == destination)				return ptr;			destination += PAGE_SIZE;		}	}	return 0;}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/314b6a4d80a7a5217c86ffdca926b6f406da0e0e/kexec.c/clean/kernel/kexec.c