33 #define BUG_ON(condition, description)					      \  macro
51 	BUG_ON(source_mapping == MAP_FAILED, "mmap");  in kernel_support_for_mremap_dontunmap()
61 		BUG_ON(munmap(dest_mapping, num_pages * page_size) == -1,  in kernel_support_for_mremap_dontunmap()
65 	BUG_ON(munmap(source_mapping, num_pages * page_size) == -1,  in kernel_support_for_mremap_dontunmap()
74 	BUG_ON(size & (page_size - 1),  in check_region_contains_byte()
76 	BUG_ON((unsigned long)addr & (page_size - 1),  in check_region_contains_byte()
105 	BUG_ON(source_mapping == MAP_FAILED, "mmap");  in mremap_dontunmap_simple()
113 	BUG_ON(dest_mapping == MAP_FAILED, "mremap");  in mremap_dontunmap_simple()
117 	BUG_ON(check_region_contains_byte  in mremap_dontunmap_simple()
120 	BUG_ON(check_region_contains_byte  in mremap_dontunmap_simple()
124 	BUG_ON(munmap(dest_mapping, num_pages * page_size) == -1,  in mremap_dontunmap_simple()
126 	BUG_ON(munmap(source_mapping, num_pages * page_size) == -1,  in mremap_dontunmap_simple()
136 	BUG_ON(mem_fd < 0, "memfd_create");  in mremap_dontunmap_simple_shmem()
138 	BUG_ON(ftruncate(mem_fd, num_pages * page_size) < 0,  in mremap_dontunmap_simple_shmem()
144 	BUG_ON(source_mapping == MAP_FAILED, "mmap");  in mremap_dontunmap_simple_shmem()
146 	BUG_ON(close(mem_fd) < 0, "close");  in mremap_dontunmap_simple_shmem()
156 		BUG_ON(munmap(source_mapping, num_pages * page_size) == -1,  in mremap_dontunmap_simple_shmem()
161 	BUG_ON(dest_mapping == MAP_FAILED, "mremap");  in mremap_dontunmap_simple_shmem()
165 	BUG_ON(check_region_contains_byte  in mremap_dontunmap_simple_shmem()
171 	BUG_ON(check_region_contains_byte  in mremap_dontunmap_simple_shmem()
175 	BUG_ON(munmap(dest_mapping, num_pages * page_size) == -1,  in mremap_dontunmap_simple_shmem()
177 	BUG_ON(munmap(source_mapping, num_pages * page_size) == -1,  in mremap_dontunmap_simple_shmem()
193 	BUG_ON(dest_mapping == MAP_FAILED, "mmap");  in mremap_dontunmap_simple_fixed()
199 	BUG_ON(source_mapping == MAP_FAILED, "mmap");  in mremap_dontunmap_simple_fixed()
206 	BUG_ON(remapped_mapping == MAP_FAILED, "mremap");  in mremap_dontunmap_simple_fixed()
207 	BUG_ON(remapped_mapping != dest_mapping,  in mremap_dontunmap_simple_fixed()
212 	BUG_ON(check_region_contains_byte  in mremap_dontunmap_simple_fixed()
217 	BUG_ON(check_region_contains_byte  in mremap_dontunmap_simple_fixed()
221 	BUG_ON(munmap(dest_mapping, num_pages * page_size) == -1,  in mremap_dontunmap_simple_fixed()
223 	BUG_ON(munmap(source_mapping, num_pages * page_size) == -1,  in mremap_dontunmap_simple_fixed()
249 	BUG_ON(source_mapping == MAP_FAILED, "mmap");  in mremap_dontunmap_partial_mapping()
257 	BUG_ON(dest_mapping == MAP_FAILED, "mremap");  in mremap_dontunmap_partial_mapping()
261 	BUG_ON(check_region_contains_byte(source_mapping, 5 * page_size, 'a') !=  in mremap_dontunmap_partial_mapping()
263 	BUG_ON(check_region_contains_byte  in mremap_dontunmap_partial_mapping()
268 	BUG_ON(check_region_contains_byte(dest_mapping, 5 * page_size, 'a') !=  in mremap_dontunmap_partial_mapping()
271 	BUG_ON(munmap(dest_mapping, 5 * page_size) == -1,  in mremap_dontunmap_partial_mapping()
273 	BUG_ON(munmap(source_mapping, num_pages * page_size) == -1,  in mremap_dontunmap_partial_mapping()
301 	BUG_ON(source_mapping == MAP_FAILED, "mmap");  in mremap_dontunmap_partial_mapping_overwrite()
307 	BUG_ON(dest_mapping == MAP_FAILED, "mmap");  in mremap_dontunmap_partial_mapping_overwrite()
315 	BUG_ON(dest_mapping == MAP_FAILED, "mremap");  in mremap_dontunmap_partial_mapping_overwrite()
316 	BUG_ON(dest_mapping != remapped_mapping, "expected to remap to dest_mapping");  in mremap_dontunmap_partial_mapping_overwrite()
318 	BUG_ON(check_region_contains_byte(source_mapping, 5 * page_size, 0) !=  in mremap_dontunmap_partial_mapping_overwrite()
322 	BUG_ON(check_region_contains_byte(dest_mapping, 5 * page_size, 'a') != 0,  in mremap_dontunmap_partial_mapping_overwrite()
326 	BUG_ON(check_region_contains_byte(dest_mapping + (5 * page_size),  in mremap_dontunmap_partial_mapping_overwrite()
330 	BUG_ON(munmap(dest_mapping, 10 * page_size) == -1,  in mremap_dontunmap_partial_mapping_overwrite()
332 	BUG_ON(munmap(source_mapping, 5 * page_size) == -1,  in mremap_dontunmap_partial_mapping_overwrite()
351 	BUG_ON(page_buffer == MAP_FAILED, "unable to mmap a page.");  in main()
359 	BUG_ON(munmap(page_buffer, page_size) == -1,  in main()