const internal/poll.mutexWMask

5 uses

	internal/poll (current package)
		fd_mutex.go#L34: 	mutexWMask   = (1<<20 - 1) << 43
		fd_mutex.go#L83: 		new &^= mutexRMask | mutexWMask
		fd_mutex.go#L91: 			for old&mutexWMask != 0 {
		fd_mutex.go#L128: 		mutexMask = mutexWMask
		fd_mutex.go#L173: 		mutexMask = mutexWMask