linux/mm/memory.c

883 		 * exclusive entries currently only support private writable
2113 	/* Mappings that do not allow for writable PTEs are unproblematic. */
2332  * means that if you want a shared writable mapping, you'd better
2333  * ask for a shared writable mapping!
2458 			 * case we are creating a writable PTE for a shared
3345  * Notify the address space that the page is about to become writable so that
3433  * case, all we need to do here is to mark the page as writable and update
3910  * Thus, with FAULT_FLAG_WRITE, we can safely just mark it writable once we've
3975 		 * Just mark the pages writable and/or call ops->pfn_mkwrite.
4200 	 * If we want to map a page that's in the swapcache writable, we
4653 		 * If we want to map a page that's in the swapcache writable, we
4759 			 * map it writable without further checks and modify it
5645 	 * about to become writable
5723 		      bool writable, int *last_cpupid)
5730 	 * the case where a mapping is writable but the process never writes
5735 	if (!writable)
5770 					bool writable)
5777 	if (writable)
5802 		bool writable = false;
5812 			writable = pte_write(ptent);
5813 			if (!writable && pte_write_upgrade &&
5815 				writable = true;
5818 		numa_rebuild_single_mapping(vmf, vma, addr, start_ptep, writable);
5827 	bool writable = false, ignore_writable = false;
5850 	 * Detect now whether the PTE could be writable; this information
5853 	writable = pte_write(pte);
5854 	if (!writable && pte_write_upgrade &&
5856 		writable = true;
5866 					writable, &last_cpupid);
5875 	writable = false;
5905 					    writable);
6470 				     unsigned long addr_mask, bool writable,
6478 	args->writable = writable;
6640 	bool writable;
6648 	writable = args.writable;
6651 	if ((write & FOLL_WRITE) && !writable)
6663 	    (writable != args.writable)) {