140 static void anon_allocate_area(void **alloc_area)  in anon_allocate_area()  argument
142 	if (posix_memalign(alloc_area, page_size, nr_pages * page_size)) {  in anon_allocate_area()
144 		*alloc_area = NULL;  in anon_allocate_area()
169 static void hugetlb_allocate_area(void **alloc_area)  in hugetlb_allocate_area()  argument
173 	*alloc_area = mmap(NULL, nr_pages * page_size, PROT_READ | PROT_WRITE,  in hugetlb_allocate_area()
176 			   huge_fd, *alloc_area == area_src ? 0 :  in hugetlb_allocate_area()
178 	if (*alloc_area == MAP_FAILED) {  in hugetlb_allocate_area()
180 		*alloc_area = NULL;  in hugetlb_allocate_area()
186 				  huge_fd, *alloc_area == area_src ? 0 :  in hugetlb_allocate_area()
189 			if (munmap(*alloc_area, nr_pages * page_size) < 0)  in hugetlb_allocate_area()
191 			*alloc_area = NULL;  in hugetlb_allocate_area()
195 	if (*alloc_area == area_src) {  in hugetlb_allocate_area()
196 		huge_fd_off0 = *alloc_area;  in hugetlb_allocate_area()
231 static void shmem_allocate_area(void **alloc_area)  in shmem_allocate_area()  argument
233 	*alloc_area = mmap(NULL, nr_pages * page_size, PROT_READ | PROT_WRITE,  in shmem_allocate_area()
235 	if (*alloc_area == MAP_FAILED) {  in shmem_allocate_area()
237 		*alloc_area = NULL;  in shmem_allocate_area()
243 	void (*allocate_area)(void **alloc_area);