67 	/* released */
68 	bool released;  member
361  * If FAULT_FLAG_ALLOW_RETRY is set, the mmap_lock must be released
367  * fatal_signal_pending()s, and the mmap_lock must be released before
412 	 * If it's already released don't get it. This avoids to loop  in handle_userfault()
416 	if (unlikely(READ_ONCE(ctx->released))) {  in handle_userfault()
508 	if (likely(must_wait && !READ_ONCE(ctx->released))) {  in handle_userfault()
526 	 * kernel stack can be released after the list_del_init.  in handle_userfault()
540 	 * already released.  in handle_userfault()
570 		if (READ_ONCE(ctx->released) ||  in userfaultfd_event_wait_completion()
618 	 * already released.  in userfaultfd_event_wait_completion()
665 		ctx->released = false;  in dup_userfaultfd()
845 	WRITE_ONCE(ctx->released, true);  in userfaultfd_release()
854 	 * changes while handle_userfault released the mmap_lock. So  in userfaultfd_release()
855 	 * it's critical that released is set to true (above), before  in userfaultfd_release()
1113 			 * the event wasn't already released by fork  in userfaultfd_ctx_read()
1135 			 * has already been released. We still hold  in userfaultfd_ctx_read()
1985 	ctx->released = false;  in SYSCALL_DEFINE1()