Thanks Aurelien, the added comment looks good and very useful, Reviewed-by: Christoph Hellwig <hch@xxxxxx> We don't have any man pages documenting these ioctls or other user visible documentation, do we? -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html