const golang.org/x/sys/unix.PR_FUTEX_HASH_GET_IMMUTABLE

one use

	golang.org/x/sys/unix (current package)
		zerrors_linux.go#L2506: 	PR_FUTEX_HASH_GET_IMMUTABLE                 = 0x3

The pages are generated with Golds v0.7.6. (GOOS=linux GOARCH=amd64)