EPI_MEM_FREE(epi); 
kmem_cache_free(epi_cache, epi); 
static void ep_release_epitem(struct epitem *epi){	if (atomic_dec_and_test(&epi->usecnt))		EPI_MEM_FREE(epi);}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/b030a4dd609e167da7f73c2d1fa5af864a0aea17/eventpoll.c/clean/fs/eventpoll.c