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

one use

	golang.org/x/sys/unix (current package)
		ztypes_linux.go#L6269: 	SK_MEMINFO_OPTMEM              = 0x6

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