/* Called when allocating swap cache for existing swap entry, This can return error codes. Returns 0 at success. -EBUSY means there is a swap cache. Note: return code is different from swap_duplicate().  */
int swapcache_prepare(swp_entry_t entry)
/* Called when allocating swap cache for existing swap entry, This can return error codes. Returns 0 at success. -EBUSY means there is a swap cache. Note: return code is different from swap_duplicate().  */
int swapcache_prepare(swp_entry_t entry)
{
	return __swap_duplicate(entry, SWAP_HAS_CACHE);
}