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

one use

	golang.org/x/sys/unix (current package)
		zerrors_linux.go#L577: 	BTRFS_SUPER_MAGIC                           = 0x9123683e

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