selftests/mm/mremap_dontunmap.c

4  * Tests for mremap w/ MREMAP_DONTUNMAP.
53 	    mremap(source_mapping, num_pages * page_size, num_pages * page_size,
108 	    mremap(source_mapping, num_pages * page_size, num_pages * page_size,
110 	BUG_ON(dest_mapping == MAP_FAILED, "mremap");
150 	    mremap(source_mapping, num_pages * page_size, num_pages * page_size,
159 	BUG_ON(dest_mapping == MAP_FAILED, "mremap");
202 	    mremap(source_mapping, num_pages * page_size, num_pages * page_size,
205 	BUG_ON(remapped_mapping == MAP_FAILED, "mremap");
207 	       "mremap should have placed the remapped mapping at dest_mapping");
209 	// The dest mapping will have been unmap by mremap so we expect the Xs
254 	    mremap(source_mapping + (5 * page_size), 5 * page_size,
257 	BUG_ON(dest_mapping == MAP_FAILED, "mremap");
313 	    mremap(source_mapping, 5 * page_size,
316 	BUG_ON(dest_mapping == MAP_FAILED, "mremap");