NO_BLOCK_MAPPINGS
flags = NO_BLOCK_MAPPINGS | NO_CONT_MAPPINGS;
NO_BLOCK_MAPPINGS | NO_CONT_MAPPINGS | NO_EXEC_MAPPINGS);
flags |= NO_BLOCK_MAPPINGS | NO_CONT_MAPPINGS;
pgd_pgtable_alloc_init_mm, NO_BLOCK_MAPPINGS);
flags |= NO_BLOCK_MAPPINGS | NO_CONT_MAPPINGS;
(flags & NO_BLOCK_MAPPINGS) == 0 &&
(flags & NO_BLOCK_MAPPINGS) == 0 &&