30 #define BUG_ON(condition, description)					      \  macro
48 	BUG_ON(source_mapping == MAP_FAILED, "mmap");  in kernel_support_for_mremap_dontunmap()
58 		BUG_ON(munmap(dest_mapping, num_pages * page_size) == -1,  in kernel_support_for_mremap_dontunmap()
62 	BUG_ON(munmap(source_mapping, num_pages * page_size) == -1,  in kernel_support_for_mremap_dontunmap()
71 	BUG_ON(size & (page_size - 1),  in check_region_contains_byte()
73 	BUG_ON((unsigned long)addr & (page_size - 1),  in check_region_contains_byte()
102 	BUG_ON(source_mapping == MAP_FAILED, "mmap");  in mremap_dontunmap_simple()
110 	BUG_ON(dest_mapping == MAP_FAILED, "mremap");  in mremap_dontunmap_simple()
114 	BUG_ON(check_region_contains_byte  in mremap_dontunmap_simple()
117 	BUG_ON(check_region_contains_byte  in mremap_dontunmap_simple()
121 	BUG_ON(munmap(dest_mapping, num_pages * page_size) == -1,  in mremap_dontunmap_simple()
123 	BUG_ON(munmap(source_mapping, num_pages * page_size) == -1,  in mremap_dontunmap_simple()
133 	BUG_ON(mem_fd < 0, "memfd_create");  in mremap_dontunmap_simple_shmem()
135 	BUG_ON(ftruncate(mem_fd, num_pages * page_size) < 0,  in mremap_dontunmap_simple_shmem()
141 	BUG_ON(source_mapping == MAP_FAILED, "mmap");  in mremap_dontunmap_simple_shmem()
143 	BUG_ON(close(mem_fd) < 0, "close");  in mremap_dontunmap_simple_shmem()
153 		BUG_ON(munmap(source_mapping, num_pages * page_size) == -1,  in mremap_dontunmap_simple_shmem()
158 	BUG_ON(dest_mapping == MAP_FAILED, "mremap");  in mremap_dontunmap_simple_shmem()
162 	BUG_ON(check_region_contains_byte  in mremap_dontunmap_simple_shmem()
168 	BUG_ON(check_region_contains_byte  in mremap_dontunmap_simple_shmem()
172 	BUG_ON(munmap(dest_mapping, num_pages * page_size) == -1,  in mremap_dontunmap_simple_shmem()
174 	BUG_ON(munmap(source_mapping, num_pages * page_size) == -1,  in mremap_dontunmap_simple_shmem()
190 	BUG_ON(dest_mapping == MAP_FAILED, "mmap");  in mremap_dontunmap_simple_fixed()
196 	BUG_ON(source_mapping == MAP_FAILED, "mmap");  in mremap_dontunmap_simple_fixed()
203 	BUG_ON(remapped_mapping == MAP_FAILED, "mremap");  in mremap_dontunmap_simple_fixed()
204 	BUG_ON(remapped_mapping != dest_mapping,  in mremap_dontunmap_simple_fixed()
209 	BUG_ON(check_region_contains_byte  in mremap_dontunmap_simple_fixed()
214 	BUG_ON(check_region_contains_byte  in mremap_dontunmap_simple_fixed()
218 	BUG_ON(munmap(dest_mapping, num_pages * page_size) == -1,  in mremap_dontunmap_simple_fixed()
220 	BUG_ON(munmap(source_mapping, num_pages * page_size) == -1,  in mremap_dontunmap_simple_fixed()
246 	BUG_ON(source_mapping == MAP_FAILED, "mmap");  in mremap_dontunmap_partial_mapping()
254 	BUG_ON(dest_mapping == MAP_FAILED, "mremap");  in mremap_dontunmap_partial_mapping()
258 	BUG_ON(check_region_contains_byte(source_mapping, 5 * page_size, 'a') !=  in mremap_dontunmap_partial_mapping()
260 	BUG_ON(check_region_contains_byte  in mremap_dontunmap_partial_mapping()
265 	BUG_ON(check_region_contains_byte(dest_mapping, 5 * page_size, 'a') !=  in mremap_dontunmap_partial_mapping()
268 	BUG_ON(munmap(dest_mapping, 5 * page_size) == -1,  in mremap_dontunmap_partial_mapping()
270 	BUG_ON(munmap(source_mapping, num_pages * page_size) == -1,  in mremap_dontunmap_partial_mapping()
298 	BUG_ON(source_mapping == MAP_FAILED, "mmap");  in mremap_dontunmap_partial_mapping_overwrite()
304 	BUG_ON(dest_mapping == MAP_FAILED, "mmap");  in mremap_dontunmap_partial_mapping_overwrite()
312 	BUG_ON(dest_mapping == MAP_FAILED, "mremap");  in mremap_dontunmap_partial_mapping_overwrite()
313 	BUG_ON(dest_mapping != remapped_mapping, "expected to remap to dest_mapping");  in mremap_dontunmap_partial_mapping_overwrite()
315 	BUG_ON(check_region_contains_byte(source_mapping, 5 * page_size, 0) !=  in mremap_dontunmap_partial_mapping_overwrite()
319 	BUG_ON(check_region_contains_byte(dest_mapping, 5 * page_size, 'a') != 0,  in mremap_dontunmap_partial_mapping_overwrite()
323 	BUG_ON(check_region_contains_byte(dest_mapping + (5 * page_size),  in mremap_dontunmap_partial_mapping_overwrite()
327 	BUG_ON(munmap(dest_mapping, 10 * page_size) == -1,  in mremap_dontunmap_partial_mapping_overwrite()
329 	BUG_ON(munmap(source_mapping, 5 * page_size) == -1,  in mremap_dontunmap_partial_mapping_overwrite()
348 	BUG_ON(page_buffer == MAP_FAILED, "unable to mmap a page.");  in main()
356 	BUG_ON(munmap(page_buffer, page_size) == -1,  in main()