shmem_unuse       211 include/linux/swap.h extern int shmem_unuse(swp_entry_t entry, struct page *page);
shmem_unuse       813 mm/swapfile.c  				shmem = shmem_unuse(entry, page);
shmem_unuse       843 mm/swapfile.c  					shmem = shmem_unuse(entry, page);