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

one use

	golang.org/x/sys/unix (current package)
		zerrors_linux_amd64.go#L37: 	BLKPBSZGET                       = 0x127b

The pages are generated with Golds v0.4.9. (GOOS=linux GOARCH=amd64)