73 	/* released */
74 	bool released;  member
359  * If FAULT_FLAG_ALLOW_RETRY is set, the mmap_lock must be released
365  * fatal_signal_pending()s, and the mmap_lock must be released before
410 	 * If it's already released don't get it. This avoids to loop  in handle_userfault()
414 	if (unlikely(READ_ONCE(ctx->released))) {  in handle_userfault()
506 	if (likely(must_wait && !READ_ONCE(ctx->released))) {  in handle_userfault()
524 	 * kernel stack can be released after the list_del_init.  in handle_userfault()
538 	 * already released.  in handle_userfault()
568 		if (READ_ONCE(ctx->released) ||  in userfaultfd_event_wait_completion()
616 	 * already released.  in userfaultfd_event_wait_completion()
664 		ctx->released = false;  in dup_userfaultfd()
844 	WRITE_ONCE(ctx->released, true);  in userfaultfd_release()
853 	 * changes while handle_userfault released the mmap_lock. So  in userfaultfd_release()
854 	 * it's critical that released is set to true (above), before  in userfaultfd_release()
1117 			 * the event wasn't already released by fork  in userfaultfd_ctx_read()
1139 			 * has already been released. We still hold  in userfaultfd_ctx_read()
1982 	ctx->released = false;  in SYSCALL_DEFINE1()