const runtime.pollFDSeqBits

2 uses

	runtime (current package)
		netpoll.go#L132: 	pollFDSeqBits = 20                   // number of bits in pollFDSeq
		netpoll.go#L133: 	pollFDSeqMask = 1<<pollFDSeqBits - 1 // mask for pollFDSeq